3 // cs-parser.jay: The Parser for the C# compiler
5 // Authors: Miguel de Icaza (miguel@gnome.org)
6 // Ravi Pratap (ravi@ximian.com)
7 // Marek Safar (marek.safar@gmail.com)
9 // Dual Licensed under the terms of the GNU GPL and the MIT X11 license
11 // (C) 2001 Ximian, Inc (http://www.ximian.com)
12 // (C) 2004-2011 Novell, Inc
13 // Copyright 2011-2012 Xamarin Inc.
19 using System.Collections.Generic;
26 public class CSharpParser
29 enum ParameterModifierType
36 DefaultValue = 1 << 6,
38 All = Ref | Out | This | Params | Arglist | DefaultValue,
39 PrimaryConstructor = Ref | Out | Params | DefaultValue
42 static readonly object ModifierNone = 0;
44 NamespaceContainer current_namespace;
45 TypeContainer current_container;
46 TypeDefinition current_type;
47 PropertyBase current_property;
48 EventProperty current_event;
49 EventField current_event_field;
50 FieldBase current_field;
53 /// Current block is used to add statements as we find
58 BlockVariable current_variable;
60 Delegate current_delegate;
62 AnonymousMethodExpression current_anonymous_method;
65 /// This is used by the unary_expression code to resolve
66 /// a name against a parameter.
69 // FIXME: This is very ugly and it's very hard to reset it correctly
70 // on all places, especially when some parameters are autogenerated.
71 ParametersCompiled current_local_parameters;
73 bool parsing_anonymous_method;
78 /// An out-of-band stack.
80 Stack<object> oob_stack;
83 /// Controls the verbosity of the errors produced by the parser
85 int yacc_verbose_flag;
88 /// Used by the interactive shell, flags whether EOF was reached
89 /// and an error was produced
91 public bool UnexpectedEOF;
96 readonly CompilationSourceFile file;
99 /// Temporary Xml documentation cache.
100 /// For enum types, we need one more temporary store.
103 string enumTypeComment;
105 /// Current attribute target
106 string current_attr_target;
108 ParameterModifierType valid_param_mod;
110 bool default_parameter_used;
112 /// When using the interactive parser, this holds the
113 /// resulting expression
114 public Class InteractiveResult;
117 // Keeps track of global data changes to undo on parser error
121 bool? interactive_async;
123 Stack<Linq.QueryBlock> linq_clause_blocks;
125 ModuleContainer module;
127 readonly CompilerContext compiler;
128 readonly LanguageVersion lang_version;
129 readonly bool doc_support;
130 readonly CompilerSettings settings;
131 readonly Report report;
134 // Instead of allocating carrier array everytime we
135 // share the bucket for very common constructs which can never
138 List<Parameter> parameters_bucket;
141 // Full AST support members
144 List<Tuple<Modifiers, Location>> mod_locations;
145 Stack<Location> location_stack;
149 %token NONE /* This token is never returned by our lexer */
150 %token ERROR // This is used not by the parser, but by the tokenizer.
154 *These are the C# keywords
253 %token INTERR_NULLABLE
260 %token INTERR_OPERATOR
262 %token INTERPOLATED_STRING
263 %token INTERPOLATED_STRING_END
266 /* C# keywords which are not really keywords */
272 /* C# single character operators/punctuation. */
300 /* C# multi-character operators. */
305 %token OP_SHIFT_RIGHT
312 %token OP_MULT_ASSIGN
317 %token OP_SHIFT_LEFT_ASSIGN
318 %token OP_SHIFT_RIGHT_ASSIGN
325 /* Generics <,> tokens */
326 %token OP_GENERICS_LT
327 %token OP_GENERICS_LT_DECL
328 %token OP_GENERICS_GT
333 %token OPEN_PARENS_LAMBDA
334 %token OPEN_PARENS_CAST
335 %token GENERIC_DIMENSION
337 %token OPEN_BRACKET_EXPR
339 // Make the parser go into eval mode parsing (statements and compilation units).
340 %token EVAL_STATEMENT_PARSER
341 %token EVAL_COMPILATION_UNIT_PARSER
342 %token EVAL_USING_DECLARATIONS_UNIT_PARSER
347 // This token is generated to trigger the completion engine at this point
349 %token GENERATE_COMPLETION
352 // This token is return repeatedly after the first GENERATE_COMPLETION
353 // token is produced and before the final EOF
355 %token COMPLETE_COMPLETION
357 /* Add precedence rules to solve dangling else s/r conflict */
361 /* Define the operator tokens and their precedences */
369 %left OP_SHIFT_LEFT OP_SHIFT_RIGHT
371 %left STAR DIV PERCENT
372 %right BANG CARRET UMINUS
373 %nonassoc OP_INC OP_DEC
375 %left OPEN_BRACKET OPEN_BRACE
378 %start compilation_unit
382 : outer_declaration opt_EOF
384 Lexer.check_incorrect_doc_comment ();
386 | interactive_parsing { Lexer.CompleteOnEOF = false; } opt_EOF
387 | documentation_parsing
391 : opt_extern_alias_directives opt_using_directives
392 | opt_extern_alias_directives opt_using_directives namespace_or_type_declarations opt_attributes
395 Attributes attrs = (Attributes) $4;
396 report.Error (1730, attrs.Attrs [0].Location,
397 "Assembly and module attributes must precede all other elements except using clauses and extern alias declarations");
399 current_namespace.UnattachedAttributes = attrs;
402 | opt_extern_alias_directives opt_using_directives attribute_sections
404 Attributes attrs = (Attributes) $3;
406 foreach (var a in attrs.Attrs) {
407 if (a.ExplicitTarget == "assembly" || a.ExplicitTarget == "module")
410 if (a.ExplicitTarget == null)
411 report.Error (-1671, a.Location, "Global attributes must have attribute target specified");
415 module.AddAttributes ((Attributes) $3, current_namespace);
419 if (yyToken == Token.EXTERN_ALIAS)
420 report.Error (439, lexer.Location, "An extern alias declaration must precede all other elements");
422 Error_SyntaxError (yyToken);
431 extern_alias_directives
432 : extern_alias_directive
433 | extern_alias_directives extern_alias_directive
436 extern_alias_directive
437 : EXTERN_ALIAS IDENTIFIER IDENTIFIER SEMICOLON
439 var lt = (LocatedToken) $2;
442 syntax_error (lt.Location, "`alias' expected");
444 if (lang_version == LanguageVersion.ISO_1)
445 FeatureIsNotAvailable (lt.Location, "external alias");
447 lt = (LocatedToken) $3;
448 if (lt.Value == QualifiedAliasMember.GlobalAlias) {
449 RootNamespace.Error_GlobalNamespaceRedefined (report, lt.Location);
452 var na = new UsingExternAlias (new SimpleMemberName (lt.Value, lt.Location), GetLocation ($1));
453 current_namespace.AddUsing (na);
455 lbag.AddLocation (na, GetLocation ($2), GetLocation ($4));
460 Error_SyntaxError (yyToken);
466 | using_directives using_directive
473 Lexer.doc_state = XmlCommentState.Allowed;
478 : USING opt_static namespace_or_type_expr SEMICOLON
482 if (lang_version <= LanguageVersion.V_5)
483 FeatureIsNotAvailable (GetLocation ($2), "using static");
485 uc = new UsingType ((ATypeNameExpression) $3, GetLocation ($1));
486 lbag.AddLocation (uc, GetLocation ($2), GetLocation ($4));
488 uc = new UsingNamespace ((ATypeNameExpression) $3, GetLocation ($1));
489 lbag.AddLocation (uc, GetLocation ($4));
492 current_namespace.AddUsing (uc);
494 | USING opt_static IDENTIFIER ASSIGN namespace_or_type_expr SEMICOLON
496 var lt = (LocatedToken) $3;
497 if (lang_version != LanguageVersion.ISO_1 && lt.Value == "global") {
498 report.Warning (440, 2, lt.Location,
499 "An alias named `global' will not be used when resolving `global::'. The global namespace will be used instead");
503 report.Error (8085, GetLocation ($2), "A `using static' directive cannot be used to declare an alias");
506 var un = new UsingAliasNamespace (new SimpleMemberName (lt.Value, lt.Location), (ATypeNameExpression) $5, GetLocation ($1));
507 current_namespace.AddUsing (un);
509 lbag.AddLocation (un, GetLocation ($4), GetLocation ($6));
513 Error_SyntaxError (yyToken);
524 // Strictly speaking, namespaces don't have attributes but
525 // we parse global attributes along with namespace declarations and then
528 namespace_declaration
529 : opt_attributes NAMESPACE namespace_name
531 Attributes attrs = (Attributes) $1;
532 var name = (MemberName) $3;
534 bool valid_global_attrs = true;
535 if ((current_namespace.DeclarationFound || current_namespace != file)) {
536 valid_global_attrs = false;
538 foreach (var a in attrs.Attrs) {
539 if (a.ExplicitTarget == "assembly" || a.ExplicitTarget == "module")
542 valid_global_attrs = false;
547 if (!valid_global_attrs)
548 report.Error (1671, name.Location, "A namespace declaration cannot have modifiers or attributes");
551 module.AddAttributes (attrs, current_namespace);
553 var ns = new NamespaceContainer (name, current_namespace);
554 current_namespace.AddTypeContainer (ns);
555 current_container = current_namespace = ns;
560 Lexer.doc_state = XmlCommentState.Allowed;
562 opt_extern_alias_directives opt_using_directives opt_namespace_or_type_declarations CLOSE_BRACE opt_semicolon_error
565 lbag.AddLocation (current_container, GetLocation ($2), GetLocation ($5), GetLocation ($10), GetLocation ($11));
567 lbag.AddLocation (current_container, GetLocation ($2), GetLocation ($5), GetLocation ($10));
569 current_container = current_namespace = current_namespace.Parent;
571 | opt_attributes NAMESPACE namespace_name
573 report.Error (1514, lexer.Location, "Unexpected symbol `{0}', expecting `.' or `{{'", GetSymbolName (yyToken));
575 var name = (MemberName) $3;
576 var ns = new NamespaceContainer (name, current_namespace);
577 lbag.AddLocation (ns, GetLocation ($2));
578 current_namespace.AddTypeContainer (ns);
587 Error_SyntaxError (yyToken);
595 var lt = (LocatedToken) $1;
596 $$ = new MemberName (lt.Value, lt.Location);
598 | namespace_name DOT IDENTIFIER
600 var lt = (LocatedToken) $3;
601 $$ = new MemberName ((MemberName) $1, lt.Value, lt.Location);
602 lbag.AddLocation ($$, GetLocation ($2));
606 Error_SyntaxError (yyToken);
607 $$ = new MemberName ("<invalid>", lexer.Location);
626 opt_extern_alias_directives
628 | extern_alias_directives
631 opt_namespace_or_type_declarations
633 | namespace_or_type_declarations
636 namespace_or_type_declarations
637 : namespace_or_type_declaration
638 | namespace_or_type_declarations namespace_or_type_declaration
641 namespace_or_type_declaration
645 TypeContainer ds = (TypeContainer)$1;
647 if ((ds.ModFlags & (Modifiers.PRIVATE | Modifiers.PROTECTED)) != 0){
648 report.Error (1527, ds.Location,
649 "Namespace elements cannot be explicitly declared as private, protected or protected internal");
652 // Here is a trick, for explicit attributes we don't know where they belong to until
653 // we parse succeeding declaration hence we parse them as normal and re-attach them
654 // when we know whether they are global (assembly:, module:) or local (type:).
655 if (ds.OptAttributes != null) {
656 ds.OptAttributes.ConvertGlobalAttributes (ds, current_namespace, !current_namespace.DeclarationFound && current_namespace == file);
659 current_namespace.DeclarationFound = true;
661 | namespace_declaration
663 current_namespace.DeclarationFound = true;
665 | attribute_sections CLOSE_BRACE {
666 current_namespace.UnattachedAttributes = (Attributes) $1;
667 report.Error (1518, lexer.Location, "Attributes must be attached to class, delegate, enum, interface or struct");
675 | interface_declaration
677 | delegate_declaration
679 // Enable this when we have handled all errors, because this acts as a generic fallback
682 // Console.WriteLine ("Token=" + yyToken);
683 // report.Error (1518, GetLocation ($1), "Expected class, struct, interface, enum or delegate");
699 var sect = (List<Attribute>) $1;
700 $$ = new Attributes (sect);
702 | attribute_sections attribute_section
704 Attributes attrs = $1 as Attributes;
705 var sect = (List<Attribute>) $2;
707 attrs = new Attributes (sect);
708 else if (sect != null)
709 attrs.AddAttributes (sect);
717 PushLocation (GetLocation ($1));
718 lexer.parsing_attribute_section = true;
720 attribute_section_cont
722 lexer.parsing_attribute_section = false;
727 attribute_section_cont
728 : attribute_target COLON
730 current_attr_target = (string) $1;
731 if (current_attr_target == "assembly" || current_attr_target == "module") {
732 Lexer.check_incorrect_doc_comment ();
735 attribute_list opt_comma CLOSE_BRACKET
737 // when attribute target is invalid
738 if (current_attr_target == string.Empty)
739 $$ = new List<Attribute> (0);
743 lbag.InsertLocation ($$, 0, PopLocation ());
745 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($5), GetLocation ($6));
747 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($6));
750 current_attr_target = null;
751 lexer.parsing_attribute_section = false;
753 | attribute_list opt_comma CLOSE_BRACKET
757 lbag.InsertLocation ($$, 0, PopLocation ());
759 lbag.AddLocation ($$, GetLocation($2), GetLocation ($3));
761 lbag.AddLocation ($$, GetLocation($3));
766 Error_SyntaxError (yyToken);
768 var lt = (LocatedToken) $1;
769 var tne = new SimpleName (lt.Value, null, lt.Location);
771 $$ = new List<Attribute> () {
772 new Attribute (null, tne, null, GetLocation ($1), false)
777 if (CheckAttributeTarget (yyToken, GetTokenName (yyToken), GetLocation ($1)).Length > 0)
778 Error_SyntaxError (yyToken);
787 var lt = (LocatedToken) $1;
788 $$ = CheckAttributeTarget (yyToken, lt.Value, lt.Location);
790 | EVENT { $$ = "event"; }
791 | RETURN { $$ = "return"; }
797 $$ = new List<Attribute> (4) { (Attribute) $1 };
799 | attribute_list COMMA attribute
801 var attrs = (List<Attribute>) $1;
803 attrs.Add ((Attribute) $3);
804 lbag.AppendTo (attrs, GetLocation ($2));
814 ++lexer.parsing_block;
816 opt_attribute_arguments
818 --lexer.parsing_block;
820 var tne = (ATypeNameExpression) $1;
821 if (tne.HasTypeArguments) {
822 report.Error (404, tne.Location, "Attributes cannot be generic");
825 $$ = new Attribute (current_attr_target, tne, (Arguments[]) $3, GetLocation ($1), lexer.IsEscapedIdentifier (tne));
830 : namespace_or_type_expr
833 opt_attribute_arguments
834 : /* empty */ { $$ = null; }
835 | OPEN_PARENS attribute_arguments CLOSE_PARENS
843 : /* empty */ { $$ = null; }
844 | positional_or_named_argument
846 Arguments a = new Arguments (4);
847 a.Add ((Argument) $1);
848 $$ = new Arguments [] { a, null };
850 | named_attribute_argument
852 Arguments a = new Arguments (4);
853 a.Add ((Argument) $1);
854 $$ = new Arguments [] { null, a };
856 | attribute_arguments COMMA positional_or_named_argument
858 Arguments[] o = (Arguments[]) $1;
860 report.Error (1016, ((Argument) $3).Expr.Location, "Named attribute arguments must appear after the positional arguments");
861 o [0] = new Arguments (4);
864 Arguments args = ((Arguments) o [0]);
865 if (args.Count > 0 && !($3 is NamedArgument) && args [args.Count - 1] is NamedArgument)
866 Error_NamedArgumentExpected ((NamedArgument) args [args.Count - 1]);
868 args.Add ((Argument) $3);
870 | attribute_arguments COMMA named_attribute_argument
872 Arguments[] o = (Arguments[]) $1;
874 o [1] = new Arguments (4);
877 ((Arguments) o [1]).Add ((Argument) $3);
881 positional_or_named_argument
884 $$ = new Argument ((Expression) $1);
889 Error_SyntaxError (yyToken);
894 named_attribute_argument
897 ++lexer.parsing_block;
901 --lexer.parsing_block;
902 var lt = (LocatedToken) $1;
903 $$ = new NamedArgument (lt.Value, lt.Location, (Expression) $4);
904 lbag.AddLocation ($$, GetLocation($2));
909 : identifier_inside_body COLON opt_named_modifier named_argument_expr
911 if (lang_version <= LanguageVersion.V_3)
912 FeatureIsNotAvailable (GetLocation ($1), "named argument");
914 // Avoid boxing in common case (no modifier)
915 var arg_mod = $3 == null ? Argument.AType.None : (Argument.AType) $3;
917 var lt = (LocatedToken) $1;
918 $$ = new NamedArgument (lt.Value, lt.Location, (Expression) $4, arg_mod);
919 lbag.AddLocation ($$, GetLocation($2));
921 | identifier_inside_body COLON OUT named_argument_expr_or_out_variable_declaration
923 if (lang_version <= LanguageVersion.V_3)
924 FeatureIsNotAvailable (GetLocation ($1), "named argument");
926 var lt = (LocatedToken) $1;
927 $$ = new NamedArgument (lt.Value, lt.Location, (Expression) $4, Argument.AType.Out);
928 lbag.AddLocation ($$, GetLocation($2));
934 : expression_or_error
937 named_argument_expr_or_out_variable_declaration
938 : expression_or_error
939 | out_variable_declaration
943 : /* empty */ { $$ = null; }
946 $$ = Argument.AType.Ref;
950 opt_class_member_declarations
952 | class_member_declarations
955 class_member_declarations
956 : class_member_declaration
958 lexer.parsing_modifiers = true;
959 lexer.parsing_block = 0;
961 | class_member_declarations class_member_declaration
963 lexer.parsing_modifiers = true;
964 lexer.parsing_block = 0;
968 class_member_declaration
969 : constant_declaration
972 | property_declaration
974 | indexer_declaration
975 | operator_declaration
976 | constructor_declaration
977 | primary_constructor_body
978 | destructor_declaration
980 | attributes_without_members
984 report.Error (1519, lexer.Location, "Unexpected symbol `{0}' in class, struct, or interface member declaration",
985 GetSymbolName (yyToken));
987 lexer.parsing_generic_declaration = false;
991 primary_constructor_body
994 current_local_parameters = current_type.PrimaryConstructorParameters;
995 if (current_local_parameters == null) {
996 report.Error (9010, GetLocation ($1), "Primary constructor body is not allowed");
997 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
1000 ++lexer.parsing_block;
1001 start_block (GetLocation ($1));
1003 opt_statement_list block_end
1005 current_local_parameters = null;
1006 var t = current_type as ClassOrStruct;
1008 var b = (ToplevelBlock) $4;
1009 if (t.PrimaryConstructorBlock != null) {
1010 report.Error (8041, b.StartLocation, "Primary constructor already has a body");
1012 t.PrimaryConstructorBlock = b;
1025 type_declaration_name
1027 lexer.ConstraintsParsing = true;
1028 valid_param_mod = ParameterModifierType.PrimaryConstructor;
1029 push_current_container (new Struct (current_container, (MemberName) $6, (Modifiers) $2, (Attributes) $1), $3);
1031 opt_primary_parameters
1033 opt_type_parameter_constraints_clauses
1035 valid_param_mod = 0;
1036 lexer.ConstraintsParsing = false;
1039 current_type.PrimaryConstructorParameters = (ParametersCompiled) $8;
1042 current_container.SetConstraints ((List<Constraints>) $10);
1045 current_container.PartialContainer.DocComment = Lexer.consume_doc_comment ();
1047 lbag.AddMember (current_container, mod_locations, GetLocation ($4));
1049 lexer.parsing_modifiers = true;
1054 Lexer.doc_state = XmlCommentState.Allowed;
1056 opt_class_member_declarations CLOSE_BRACE
1058 --lexer.parsing_declaration;
1060 Lexer.doc_state = XmlCommentState.Allowed;
1065 lbag.AppendToMember (current_container, GetLocation ($12), GetLocation ($15));
1067 lbag.AppendToMember (current_container, GetLocation ($12), GetLocation ($15), GetLocation ($17));
1069 $$ = pop_current_class ();
1071 | opt_attributes opt_modifiers opt_partial STRUCT error
1073 Error_SyntaxError (yyToken);
1077 constant_declaration
1080 CONST type IDENTIFIER
1082 var lt = (LocatedToken) $5;
1083 var mod = (Modifiers) $2;
1084 current_field = new Const (current_type, (FullNamedExpression) $4, mod, new MemberName (lt.Value, lt.Location), (Attributes) $1);
1085 current_type.AddMember (current_field);
1087 if ((mod & Modifiers.STATIC) != 0) {
1088 report.Error (504, current_field.Location, "The constant `{0}' cannot be marked static", current_field.GetSignatureForError ());
1093 constant_initializer opt_constant_declarators SEMICOLON
1096 current_field.DocComment = Lexer.consume_doc_comment ();
1097 Lexer.doc_state = XmlCommentState.Allowed;
1100 current_field.Initializer = (ConstInitializer) $7;
1101 lbag.AddMember (current_field, mod_locations, GetLocation ($3), GetLocation ($9));
1102 current_field = null;
1108 Error_SyntaxError (yyToken);
1110 current_type.AddMember (new Const (current_type, (FullNamedExpression) $4, (Modifiers) $2, MemberName.Null, (Attributes) $1));
1114 opt_constant_declarators
1116 | constant_declarators
1119 constant_declarators
1120 : constant_declarator
1122 current_field.AddDeclarator ((FieldDeclarator) $1);
1124 | constant_declarators constant_declarator
1126 current_field.AddDeclarator ((FieldDeclarator) $2);
1131 : COMMA IDENTIFIER constant_initializer
1133 var lt = (LocatedToken) $2;
1134 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (ConstInitializer) $3);
1135 lbag.AddLocation ($$, GetLocation ($1));
1139 constant_initializer
1142 ++lexer.parsing_block;
1144 constant_initializer_expr
1146 --lexer.parsing_block;
1147 $$ = new ConstInitializer (current_field, (Expression) $3, GetLocation ($1));
1151 report.Error (145, lexer.Location, "A const field requires a value to be provided");
1156 constant_initializer_expr
1157 : constant_expression
1164 member_type IDENTIFIER
1166 lexer.parsing_generic_declaration = false;
1168 FullNamedExpression type = (FullNamedExpression) $3;
1169 if (type.Type != null && type.Type.Kind == MemberKind.Void)
1170 report.Error (670, GetLocation ($3), "Fields cannot have void type");
1172 var lt = (LocatedToken) $4;
1173 current_field = new Field (current_type, type, (Modifiers) $2, new MemberName (lt.Value, lt.Location), (Attributes) $1);
1174 current_type.AddField (current_field);
1177 opt_field_initializer
1178 opt_field_declarators
1182 current_field.DocComment = Lexer.consume_doc_comment ();
1183 Lexer.doc_state = XmlCommentState.Allowed;
1186 lbag.AddMember (current_field, mod_locations, GetLocation ($8));
1188 current_field = null;
1192 FIXED simple_type IDENTIFIER
1194 if (lang_version < LanguageVersion.ISO_2)
1195 FeatureIsNotAvailable (GetLocation ($3), "fixed size buffers");
1197 var lt = (LocatedToken) $5;
1198 current_field = new FixedField (current_type, (FullNamedExpression) $4, (Modifiers) $2,
1199 new MemberName (lt.Value, lt.Location), (Attributes) $1);
1201 current_type.AddField (current_field);
1203 fixed_field_size opt_fixed_field_declarators SEMICOLON
1206 current_field.DocComment = Lexer.consume_doc_comment ();
1207 Lexer.doc_state = XmlCommentState.Allowed;
1210 current_field.Initializer = (ConstInitializer) $7;
1211 lbag.AddMember (current_field, mod_locations, GetLocation ($9));
1213 current_field = null;
1217 FIXED simple_type error
1220 report.Error (1641, GetLocation ($5), "A fixed size buffer field must have the array size specifier after the field name");
1224 opt_field_initializer
1228 ++lexer.parsing_block;
1229 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
1230 start_block (GetLocation ($1));
1232 variable_initializer
1234 --lexer.parsing_block;
1235 current_field.Initializer = (Expression) $3;
1236 lbag.AppendToMember (current_field, GetLocation ($1));
1237 end_block (lexer.Location);
1238 current_local_parameters = null;
1242 opt_field_declarators
1250 current_field.AddDeclarator ((FieldDeclarator) $1);
1252 | field_declarators field_declarator
1254 current_field.AddDeclarator ((FieldDeclarator) $2);
1261 var lt = (LocatedToken) $2;
1262 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), null);
1263 lbag.AddLocation ($$, GetLocation ($1));
1265 | COMMA IDENTIFIER ASSIGN
1267 ++lexer.parsing_block;
1269 variable_initializer
1271 --lexer.parsing_block;
1272 var lt = (LocatedToken) $2;
1273 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (Expression) $5);
1274 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
1278 opt_fixed_field_declarators
1280 | fixed_field_declarators
1283 fixed_field_declarators
1284 : fixed_field_declarator
1286 current_field.AddDeclarator ((FieldDeclarator) $1);
1288 | fixed_field_declarators fixed_field_declarator
1290 current_field.AddDeclarator ((FieldDeclarator) $2);
1294 fixed_field_declarator
1295 : COMMA IDENTIFIER fixed_field_size
1297 var lt = (LocatedToken) $2;
1298 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (ConstInitializer) $3);
1299 lbag.AddLocation ($$, GetLocation ($1));
1306 ++lexer.parsing_block;
1308 expression CLOSE_BRACKET
1310 --lexer.parsing_block;
1311 $$ = new ConstInitializer (current_field, (Expression) $3, GetLocation ($1));
1312 lbag.AddLocation ($$, GetLocation ($4));
1314 | OPEN_BRACKET error
1316 report.Error (443, lexer.Location, "Value or constant expected");
1321 variable_initializer
1326 // It has to be here for the parent to safely restore artificial block
1327 Error_SyntaxError (yyToken);
1336 Lexer.doc_state = XmlCommentState.NotAllowed;
1338 // Was added earlier in the case of body being eof for full ast
1340 method_body_expression_block
1342 Method method = (Method) $1;
1343 method.Block = (ToplevelBlock) $3;
1344 async_block = false;
1346 if (method.Block == null) {
1347 method.ParameterInfo.CheckParameters (method);
1349 if ((method.ModFlags & Modifiers.ASYNC) != 0) {
1350 report.Error (1994, method.Location, "`{0}': The async modifier can only be used with methods that have a body",
1351 method.GetSignatureForError ());
1354 if (current_container.Kind == MemberKind.Interface) {
1355 report.Error (531, method.Location, "`{0}': interface members cannot have a definition",
1356 method.GetSignatureForError ());
1360 current_local_parameters = null;
1363 Lexer.doc_state = XmlCommentState.Allowed;
1371 method_declaration_name OPEN_PARENS
1373 valid_param_mod = ParameterModifierType.All;
1375 opt_formal_parameter_list CLOSE_PARENS
1377 valid_param_mod = 0;
1378 MemberName name = (MemberName) $4;
1379 current_local_parameters = (ParametersCompiled) $7;
1381 var method = Method.Create (current_type, (FullNamedExpression) $3, (Modifiers) $2,
1382 name, current_local_parameters, (Attributes) $1);
1384 current_type.AddMember (method);
1386 async_block = (method.ModFlags & Modifiers.ASYNC) != 0;
1389 method.DocComment = Lexer.consume_doc_comment ();
1391 lbag.AddMember (method, mod_locations, GetLocation ($5), GetLocation ($8));
1395 lexer.ConstraintsParsing = true;
1397 opt_type_parameter_constraints_clauses
1399 lexer.ConstraintsParsing = false;
1402 var method = (Method) $9;
1403 method.SetConstraints ((List<Constraints>) $10);
1413 lexer.parsing_generic_declaration = true;
1415 method_declaration_name
1418 lexer.parsing_generic_declaration = false;
1419 valid_param_mod = ParameterModifierType.All;
1421 opt_formal_parameter_list CLOSE_PARENS
1423 lexer.ConstraintsParsing = true;
1425 opt_type_parameter_constraints_clauses
1427 lexer.ConstraintsParsing = false;
1428 valid_param_mod = 0;
1430 MemberName name = (MemberName) $6;
1431 current_local_parameters = (ParametersCompiled) $9;
1433 var modifiers = (Modifiers) $2;
1434 modifiers |= Modifiers.PARTIAL;
1436 var method = Method.Create (current_type, new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($4)),
1437 modifiers, name, current_local_parameters, (Attributes) $1);
1439 current_type.AddMember (method);
1441 async_block = (method.ModFlags & Modifiers.ASYNC) != 0;
1444 method.SetConstraints ((List<Constraints>) $12);
1447 method.DocComment = Lexer.consume_doc_comment ();
1449 StoreModifierLocation (Modifiers.PARTIAL, GetLocation ($3));
1450 lbag.AddMember (method, mod_locations, GetLocation ($7), GetLocation ($10));
1456 modifiers method_declaration_name OPEN_PARENS opt_formal_parameter_list CLOSE_PARENS
1458 MemberName name = (MemberName) $5;
1459 report.Error (1585, name.Location,
1460 "Member modifier `{0}' must precede the member type and name", ModifiersExtensions.Name ((Modifiers) $4));
1462 var method = Method.Create (current_type, (FullNamedExpression) $3,
1463 0, name, (ParametersCompiled) $7, (Attributes) $1);
1465 current_type.AddMember (method);
1467 current_local_parameters = (ParametersCompiled) $7;
1470 method.DocComment = Lexer.consume_doc_comment ();
1477 method_declaration_name error
1479 Error_SyntaxError (yyToken);
1480 current_local_parameters = ParametersCompiled.Undefined;
1482 MemberName name = (MemberName) $4;
1483 var method = Method.Create (current_type, (FullNamedExpression) $3, (Modifiers) $2,
1484 name, current_local_parameters, (Attributes) $1);
1486 current_type.AddMember (method);
1489 method.DocComment = Lexer.consume_doc_comment ();
1495 method_body_expression_block
1502 | SEMICOLON { $$ = null; }
1508 if (lang_version < LanguageVersion.V_6) {
1509 FeatureIsNotAvailable (GetLocation ($1), "expression bodied members");
1512 ++lexer.parsing_block;
1513 start_block (GetLocation ($1));
1515 expression SEMICOLON
1517 lexer.parsing_block = 0;
1518 current_block.AddStatement (new ContextualReturn ((Expression) $3));
1519 var b = end_block (GetLocation ($4));
1520 b.IsCompilerGenerated = true;
1525 opt_formal_parameter_list
1526 : /* empty */ { $$ = ParametersCompiled.EmptyReadOnlyParameters; }
1527 | formal_parameter_list
1530 formal_parameter_list
1533 var pars_list = (List<Parameter>) $1;
1534 $$ = new ParametersCompiled (pars_list.ToArray ());
1536 | fixed_parameters COMMA parameter_array
1538 var pars_list = (List<Parameter>) $1;
1539 pars_list.Add ((Parameter) $3);
1541 $$ = new ParametersCompiled (pars_list.ToArray ());
1543 | fixed_parameters COMMA arglist_modifier
1545 var pars_list = (List<Parameter>) $1;
1546 pars_list.Add (new ArglistParameter (GetLocation ($3)));
1547 $$ = new ParametersCompiled (pars_list.ToArray (), true);
1549 | parameter_array COMMA error
1552 report.Error (231, ((Parameter) $1).Location, "A params parameter must be the last parameter in a formal parameter list");
1554 $$ = new ParametersCompiled (new Parameter[] { (Parameter) $1 } );
1556 | fixed_parameters COMMA parameter_array COMMA error
1559 report.Error (231, ((Parameter) $3).Location, "A params parameter must be the last parameter in a formal parameter list");
1561 var pars_list = (List<Parameter>) $1;
1562 pars_list.Add (new ArglistParameter (GetLocation ($3)));
1564 $$ = new ParametersCompiled (pars_list.ToArray (), true);
1566 | arglist_modifier COMMA error
1568 report.Error (257, GetLocation ($1), "An __arglist parameter must be the last parameter in a formal parameter list");
1570 $$ = new ParametersCompiled (new Parameter [] { new ArglistParameter (GetLocation ($1)) }, true);
1572 | fixed_parameters COMMA ARGLIST COMMA error
1574 report.Error (257, GetLocation ($3), "An __arglist parameter must be the last parameter in a formal parameter list");
1576 var pars_list = (List<Parameter>) $1;
1577 pars_list.Add (new ArglistParameter (GetLocation ($3)));
1579 $$ = new ParametersCompiled (pars_list.ToArray (), true);
1583 $$ = new ParametersCompiled (new Parameter[] { (Parameter) $1 } );
1587 $$ = new ParametersCompiled (new Parameter [] { new ArglistParameter (GetLocation ($1)) }, true);
1591 Error_SyntaxError (yyToken);
1592 $$ = ParametersCompiled.EmptyReadOnlyParameters;
1599 parameters_bucket.Clear ();
1600 Parameter p = (Parameter) $1;
1601 parameters_bucket.Add (p);
1603 default_parameter_used = p.HasDefaultValue;
1604 $$ = parameters_bucket;
1606 | fixed_parameters COMMA fixed_parameter
1608 var pars = (List<Parameter>) $1;
1609 Parameter p = (Parameter) $3;
1611 if (p.HasExtensionMethodModifier)
1612 report.Error (1100, p.Location, "The parameter modifier `this' can only be used on the first parameter");
1613 else if (!p.HasDefaultValue && default_parameter_used)
1614 report.Error (1737, p.Location, "Optional parameter cannot precede required parameters");
1616 default_parameter_used |= p.HasDefaultValue;
1619 lbag.AddLocation (p, GetLocation ($2));
1628 opt_parameter_modifier
1630 identifier_inside_body
1632 var lt = (LocatedToken) $4;
1633 $$ = new Parameter ((FullNamedExpression) $3, lt.Value, (Parameter.Modifier) $2, (Attributes) $1, lt.Location);
1636 opt_parameter_modifier
1638 identifier_inside_body OPEN_BRACKET CLOSE_BRACKET
1640 var lt = (LocatedToken) $4;
1641 report.Error (1552, lt.Location, "Array type specifier, [], must appear before parameter name");
1642 $$ = new Parameter ((FullNamedExpression) $3, lt.Value, (Parameter.Modifier) $2, (Attributes) $1, lt.Location);
1644 | attribute_sections error
1646 Error_SyntaxError (yyToken);
1647 Location l = GetLocation ($2);
1648 $$ = new Parameter (null, null, Parameter.Modifier.NONE, (Attributes) $1, l);
1651 opt_parameter_modifier
1655 Error_SyntaxError (yyToken);
1656 Location l = GetLocation ($4);
1657 $$ = new Parameter ((FullNamedExpression) $3, null, (Parameter.Modifier) $2, (Attributes) $1, l);
1660 opt_parameter_modifier
1662 identifier_inside_body
1665 ++lexer.parsing_block;
1669 --lexer.parsing_block;
1670 if (lang_version <= LanguageVersion.V_3) {
1671 FeatureIsNotAvailable (GetLocation ($5), "optional parameter");
1674 Parameter.Modifier mod = (Parameter.Modifier) $2;
1675 if (mod != Parameter.Modifier.NONE) {
1677 case Parameter.Modifier.REF:
1678 case Parameter.Modifier.OUT:
1679 report.Error (1741, GetLocation ($2), "Cannot specify a default value for the `{0}' parameter",
1680 Parameter.GetModifierSignature (mod));
1683 case Parameter.Modifier.This:
1684 report.Error (1743, GetLocation ($2), "Cannot specify a default value for the `{0}' parameter",
1685 Parameter.GetModifierSignature (mod));
1688 throw new NotImplementedException (mod.ToString ());
1691 mod = Parameter.Modifier.NONE;
1694 if ((valid_param_mod & ParameterModifierType.DefaultValue) == 0)
1695 report.Error (1065, GetLocation ($5), "Optional parameter is not valid in this context");
1697 var lt = (LocatedToken) $4;
1698 $$ = new Parameter ((FullNamedExpression) $3, lt.Value, mod, (Attributes) $1, lt.Location);
1699 lbag.AddLocation ($$, GetLocation ($5));
1702 ((Parameter) $$).DefaultValue = new DefaultParameterValueExpression ((Expression) $7);
1706 opt_parameter_modifier
1707 : /* empty */ { $$ = Parameter.Modifier.NONE; }
1708 | parameter_modifiers
1712 : parameter_modifier
1716 | parameter_modifiers parameter_modifier
1718 Parameter.Modifier p2 = (Parameter.Modifier)$2;
1719 Parameter.Modifier mod = (Parameter.Modifier)$1 | p2;
1720 if (((Parameter.Modifier)$1 & p2) == p2) {
1721 Error_DuplicateParameterModifier (lexer.Location, p2);
1723 switch (mod & ~Parameter.Modifier.This) {
1724 case Parameter.Modifier.REF:
1725 report.Error (1101, lexer.Location, "The parameter modifiers `this' and `ref' cannot be used altogether");
1727 case Parameter.Modifier.OUT:
1728 report.Error (1102, lexer.Location, "The parameter modifiers `this' and `out' cannot be used altogether");
1731 report.Error (1108, lexer.Location, "A parameter cannot have specified more than one modifier");
1742 if ((valid_param_mod & ParameterModifierType.Ref) == 0)
1743 Error_ParameterModifierNotValid ("ref", GetLocation ($1));
1745 $$ = Parameter.Modifier.REF;
1749 if ((valid_param_mod & ParameterModifierType.Out) == 0)
1750 Error_ParameterModifierNotValid ("out", GetLocation ($1));
1752 $$ = Parameter.Modifier.OUT;
1756 if ((valid_param_mod & ParameterModifierType.This) == 0)
1757 Error_ParameterModifierNotValid ("this", GetLocation ($1));
1759 if (lang_version <= LanguageVersion.ISO_2)
1760 FeatureIsNotAvailable (GetLocation ($1), "extension methods");
1762 $$ = Parameter.Modifier.This;
1767 : opt_attributes params_modifier type IDENTIFIER
1769 var lt = (LocatedToken) $4;
1770 $$ = new ParamsParameter ((FullNamedExpression) $3, lt.Value, (Attributes) $1, lt.Location);
1772 | opt_attributes params_modifier type IDENTIFIER ASSIGN constant_expression
1774 report.Error (1751, GetLocation ($2), "Cannot specify a default value for a parameter array");
1776 var lt = (LocatedToken) $4;
1777 $$ = new ParamsParameter ((FullNamedExpression) $3, lt.Value, (Attributes) $1, lt.Location);
1779 | opt_attributes params_modifier type error
1781 Error_SyntaxError (yyToken);
1783 $$ = new ParamsParameter ((FullNamedExpression) $3, null, (Attributes) $1, Location.Null);
1790 if ((valid_param_mod & ParameterModifierType.Params) == 0)
1791 report.Error (1670, (GetLocation ($1)), "The `params' modifier is not allowed in current context");
1793 | PARAMS parameter_modifier
1795 Parameter.Modifier mod = (Parameter.Modifier)$2;
1796 if ((mod & Parameter.Modifier.This) != 0) {
1797 report.Error (1104, GetLocation ($1), "The parameter modifiers `this' and `params' cannot be used altogether");
1799 report.Error (1611, GetLocation ($1), "The params parameter cannot be declared as ref or out");
1802 | PARAMS params_modifier
1804 Error_DuplicateParameterModifier (GetLocation ($1), Parameter.Modifier.PARAMS);
1811 if ((valid_param_mod & ParameterModifierType.Arglist) == 0)
1812 report.Error (1669, GetLocation ($1), "__arglist is not valid in this context");
1816 property_declaration
1820 member_declaration_name
1822 lexer.parsing_generic_declaration = false;
1824 tmpComment = Lexer.consume_doc_comment ();
1828 var type = (FullNamedExpression) $3;
1829 current_property = new Property (current_type, type, (Modifiers) $2,
1830 (MemberName) $4, (Attributes) $1);
1832 if (type.Type != null && type.Type.Kind == MemberKind.Void)
1833 report.Error (547, GetLocation ($3), "`{0}': property or indexer cannot have void type", current_property.GetSignatureForError ());
1835 current_type.AddMember (current_property);
1836 lbag.AddMember (current_property, mod_locations, GetLocation ($6));
1838 lexer.PropertyParsing = true;
1840 accessor_declarations
1842 lexer.PropertyParsing = false;
1845 current_property.DocComment = ConsumeStoredComment ();
1849 lbag.AppendToMember (current_property, GetLocation ($10));
1850 lexer.parsing_modifiers = true;
1852 opt_property_initializer
1854 current_property = null;
1859 member_declaration_name
1861 lexer.parsing_generic_declaration = false;
1863 tmpComment = Lexer.consume_doc_comment ();
1864 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
1868 var type = (FullNamedExpression) $3;
1869 var property = new Property (current_type, type, (Modifiers) $2,
1870 (MemberName) $4, (Attributes) $1);
1872 property.Get = new Property.GetMethod (property, Modifiers.COMPILER_GENERATED, null, property.Location);
1873 property.Get.Block = (ToplevelBlock) $6;
1875 if (current_container.Kind == MemberKind.Interface) {
1876 report.Error (531, property.Get.Block.StartLocation,
1877 "`{0}': interface members cannot have a definition", property.GetSignatureForError ());
1880 if (type.Type != null && type.Type.Kind == MemberKind.Void)
1881 report.Error (547, GetLocation ($3), "`{0}': property or indexer cannot have void type", property.GetSignatureForError ());
1884 property.DocComment = ConsumeStoredComment ();
1886 current_type.AddMember (property);
1888 current_local_parameters = null;
1892 opt_property_initializer
1896 ++lexer.parsing_block;
1897 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
1898 start_block (GetLocation ($1));
1900 property_initializer SEMICOLON
1902 --lexer.parsing_block;
1903 ((Property)current_property).Initializer = (Expression) $3;
1904 lbag.AppendToMember (current_property, GetLocation ($1), GetLocation ($4));
1905 end_block (GetLocation ($4));
1906 current_local_parameters = null;
1909 Lexer.doc_state = XmlCommentState.Allowed;
1913 property_initializer
1919 : opt_attributes opt_modifiers
1920 member_type indexer_declaration_name OPEN_BRACKET
1922 valid_param_mod = ParameterModifierType.Params | ParameterModifierType.DefaultValue;
1924 opt_formal_parameter_list CLOSE_BRACKET
1926 valid_param_mod = 0;
1927 var type = (FullNamedExpression) $3;
1928 Indexer indexer = new Indexer (current_type, type, (MemberName) $4, (Modifiers) $2, (ParametersCompiled) $7, (Attributes) $1);
1930 current_property = indexer;
1932 current_type.AddIndexer (indexer);
1933 lbag.AddMember (current_property, mod_locations, GetLocation ($5), GetLocation ($8));
1935 if (type.Type != null && type.Type.Kind == MemberKind.Void)
1936 report.Error (620, GetLocation ($3), "`{0}': indexer return type cannot be `void'", indexer.GetSignatureForError ());
1938 if (indexer.ParameterInfo.IsEmpty) {
1939 report.Error (1551, GetLocation ($5), "Indexers must have at least one parameter");
1943 tmpComment = Lexer.consume_doc_comment ();
1944 Lexer.doc_state = XmlCommentState.Allowed;
1947 lexer.PropertyParsing = true;
1948 current_local_parameters = (ParametersCompiled) $7;
1952 lexer.PropertyParsing = false;
1953 current_local_parameters = null;
1955 if (current_property.AccessorFirst != null && current_property.AccessorFirst.Block == null)
1956 ((Indexer) current_property).ParameterInfo.CheckParameters (current_property);
1959 current_property.DocComment = ConsumeStoredComment ();
1961 current_property = null;
1966 : OPEN_BRACE accessor_declarations CLOSE_BRACE
1968 lbag.AppendToMember (current_property, GetLocation ($1), GetLocation ($3));
1972 current_property.Get = new Indexer.GetIndexerMethod (current_property, Modifiers.COMPILER_GENERATED, current_local_parameters, null, current_property.Location);
1973 current_property.Get.Block = (ToplevelBlock) $1;
1977 accessor_declarations
1978 : get_accessor_declaration
1979 | get_accessor_declaration accessor_declarations
1980 | set_accessor_declaration
1981 | set_accessor_declaration accessor_declarations
1984 if (yyToken == Token.CLOSE_BRACE) {
1985 report.Error (548, lexer.Location, "`{0}': property or indexer must have at least one accessor", current_property.GetSignatureForError ());
1987 if (yyToken == Token.SEMICOLON)
1988 report.Error (1597, lexer.Location, "Semicolon after method or accessor block is not valid");
1990 report.Error (1014, GetLocation ($1), "A get or set accessor expected");
1995 get_accessor_declaration
1996 : opt_attributes opt_modifiers GET
1998 if ($2 != ModifierNone && lang_version == LanguageVersion.ISO_1) {
1999 FeatureIsNotAvailable (GetLocation ($2), "access modifiers on properties");
2002 if (current_property.Get != null) {
2003 report.Error (1007, GetLocation ($3), "Property accessor already defined");
2006 if (current_property is Indexer) {
2007 current_property.Get = new Indexer.GetIndexerMethod (current_property, (Modifiers) $2, ((Indexer)current_property).ParameterInfo.Clone (),
2008 (Attributes) $1, GetLocation ($3));
2010 current_property.Get = new Property.GetMethod (current_property,
2011 (Modifiers) $2, (Attributes) $1, GetLocation ($3));
2014 current_local_parameters = current_property.Get.ParameterInfo;
2015 lbag.AddMember (current_property.Get, mod_locations);
2016 lexer.PropertyParsing = false;
2021 current_property.Get.Block = (ToplevelBlock) $5;
2023 if (current_container.Kind == MemberKind.Interface) {
2024 report.Error (531, current_property.Get.Block.StartLocation,
2025 "`{0}': interface members cannot have a definition", current_property.Get.GetSignatureForError ());
2029 current_local_parameters = null;
2030 lexer.PropertyParsing = true;
2033 if (Lexer.doc_state == XmlCommentState.Error)
2034 Lexer.doc_state = XmlCommentState.NotAllowed;
2038 set_accessor_declaration
2039 : opt_attributes opt_modifiers SET
2041 if ($2 != ModifierNone && lang_version == LanguageVersion.ISO_1) {
2042 FeatureIsNotAvailable (GetLocation ($2), "access modifiers on properties");
2045 if (current_property.Set != null) {
2046 report.Error (1007, GetLocation ($3), "Property accessor already defined");
2049 if (current_property is Indexer) {
2050 current_property.Set = new Indexer.SetIndexerMethod (current_property, (Modifiers) $2,
2051 ParametersCompiled.MergeGenerated (compiler,
2052 ((Indexer)current_property).ParameterInfo, true, new Parameter (
2053 current_property.TypeExpression, "value", Parameter.Modifier.NONE, null, GetLocation ($3)),
2055 (Attributes) $1, GetLocation ($3));
2057 current_property.Set = new Property.SetMethod (current_property, (Modifiers) $2,
2058 ParametersCompiled.CreateImplicitParameter (current_property.TypeExpression, GetLocation ($3)),
2059 (Attributes) $1, GetLocation ($3));
2062 current_local_parameters = current_property.Set.ParameterInfo;
2063 lbag.AddMember (current_property.Set, mod_locations);
2064 lexer.PropertyParsing = false;
2069 current_property.Set.Block = (ToplevelBlock) $5;
2071 if (current_container.Kind == MemberKind.Interface) {
2072 report.Error (531, current_property.Set.Block.StartLocation,
2073 "`{0}': interface members cannot have a definition", current_property.Set.GetSignatureForError ());
2077 current_local_parameters = null;
2078 lexer.PropertyParsing = true;
2081 && Lexer.doc_state == XmlCommentState.Error)
2082 Lexer.doc_state = XmlCommentState.NotAllowed;
2096 Error_SyntaxError (1043, yyToken, "Invalid accessor body");
2102 interface_declaration
2109 type_declaration_name
2111 lexer.ConstraintsParsing = true;
2112 push_current_container (new Interface (current_container, (MemberName) $6, (Modifiers) $2, (Attributes) $1), $3);
2113 lbag.AddMember (current_container, mod_locations, GetLocation ($4));
2116 opt_type_parameter_constraints_clauses
2118 lexer.ConstraintsParsing = false;
2121 current_container.SetConstraints ((List<Constraints>) $9);
2124 current_container.PartialContainer.DocComment = Lexer.consume_doc_comment ();
2125 Lexer.doc_state = XmlCommentState.Allowed;
2128 lexer.parsing_modifiers = true;
2130 OPEN_BRACE opt_interface_member_declarations CLOSE_BRACE
2132 --lexer.parsing_declaration;
2134 Lexer.doc_state = XmlCommentState.Allowed;
2139 lbag.AppendToMember (current_container, GetLocation ($11), GetLocation ($13));
2141 lbag.AppendToMember (current_container, GetLocation ($11), GetLocation ($13), GetLocation ($15));
2143 $$ = pop_current_class ();
2145 | opt_attributes opt_modifiers opt_partial INTERFACE error
2147 Error_SyntaxError (yyToken);
2151 opt_interface_member_declarations
2153 | interface_member_declarations
2156 interface_member_declarations
2157 : interface_member_declaration
2159 lexer.parsing_modifiers = true;
2160 lexer.parsing_block = 0;
2162 | interface_member_declarations interface_member_declaration
2164 lexer.parsing_modifiers = true;
2165 lexer.parsing_block = 0;
2169 interface_member_declaration
2170 : constant_declaration
2172 report.Error (525, GetLocation ($1), "Interfaces cannot contain fields or constants");
2176 report.Error (525, GetLocation ($1), "Interfaces cannot contain fields or constants");
2178 | method_declaration
2179 | property_declaration
2181 | indexer_declaration
2182 | operator_declaration
2184 report.Error (567, GetLocation ($1), "Interfaces cannot contain operators");
2186 | constructor_declaration
2188 report.Error (526, GetLocation ($1), "Interfaces cannot contain contructors");
2192 report.Error (524, GetLocation ($1), "Interfaces cannot declare classes, structs, interfaces, delegates, or enumerations");
2196 operator_declaration
2197 : opt_attributes opt_modifiers operator_declarator
2200 method_body_expression_block
2202 OperatorDeclaration decl = (OperatorDeclaration) $3;
2204 Operator op = new Operator (
2205 current_type, decl.optype, decl.ret_type, (Modifiers) $2,
2206 current_local_parameters,
2207 (ToplevelBlock) $5, (Attributes) $1, decl.location);
2209 if (op.Block == null)
2210 op.ParameterInfo.CheckParameters (op);
2213 op.DocComment = tmpComment;
2214 Lexer.doc_state = XmlCommentState.Allowed;
2217 // Note again, checking is done in semantic analysis
2218 current_type.AddOperator (op);
2220 lbag.AddMember (op, mod_locations, lbag.GetLocations (decl));
2223 current_local_parameters = null;
2228 : type_expression_or_array
2231 report.Error (590, GetLocation ($1), "User-defined operators cannot return void");
2232 $$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
2237 : operator_type OPERATOR overloadable_operator OPEN_PARENS
2239 valid_param_mod = ParameterModifierType.DefaultValue;
2240 if ((Operator.OpType) $3 == Operator.OpType.Is)
2241 valid_param_mod |= ParameterModifierType.Out;
2243 opt_formal_parameter_list CLOSE_PARENS
2245 valid_param_mod = 0;
2247 Location loc = GetLocation ($2);
2248 Operator.OpType op = (Operator.OpType) $3;
2249 current_local_parameters = (ParametersCompiled)$6;
2251 int p_count = current_local_parameters.Count;
2253 if (op == Operator.OpType.Addition)
2254 op = Operator.OpType.UnaryPlus;
2255 else if (op == Operator.OpType.Subtraction)
2256 op = Operator.OpType.UnaryNegation;
2259 if (IsUnaryOperator (op)) {
2261 report.Error (1020, loc, "Overloadable binary operator expected");
2262 } else if (p_count != 1) {
2263 report.Error (1535, loc, "Overloaded unary operator `{0}' takes one parameter",
2264 Operator.GetName (op));
2266 } else if (op == Operator.OpType.Is) {
2267 // TODO: Special checks for is operator
2270 report.Error (1019, loc, "Overloadable unary operator expected");
2271 } else if (p_count != 2) {
2272 report.Error (1534, loc, "Overloaded binary operator `{0}' takes two parameters",
2273 Operator.GetName (op));
2278 tmpComment = Lexer.consume_doc_comment ();
2279 Lexer.doc_state = XmlCommentState.NotAllowed;
2282 $$ = new OperatorDeclaration (op, (FullNamedExpression) $1, loc);
2283 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($3), GetLocation ($4), GetLocation ($7));
2285 | conversion_operator_declarator
2288 overloadable_operator
2290 : BANG { $$ = Operator.OpType.LogicalNot; }
2291 | TILDE { $$ = Operator.OpType.OnesComplement; }
2292 | OP_INC { $$ = Operator.OpType.Increment; }
2293 | OP_DEC { $$ = Operator.OpType.Decrement; }
2294 | TRUE { $$ = Operator.OpType.True; }
2295 | FALSE { $$ = Operator.OpType.False; }
2296 // Unary and binary:
2297 | PLUS { $$ = Operator.OpType.Addition; }
2298 | MINUS { $$ = Operator.OpType.Subtraction; }
2300 | STAR { $$ = Operator.OpType.Multiply; }
2301 | DIV { $$ = Operator.OpType.Division; }
2302 | PERCENT { $$ = Operator.OpType.Modulus; }
2303 | BITWISE_AND { $$ = Operator.OpType.BitwiseAnd; }
2304 | BITWISE_OR { $$ = Operator.OpType.BitwiseOr; }
2305 | CARRET { $$ = Operator.OpType.ExclusiveOr; }
2306 | OP_SHIFT_LEFT { $$ = Operator.OpType.LeftShift; }
2307 | OP_SHIFT_RIGHT { $$ = Operator.OpType.RightShift; }
2308 | OP_EQ { $$ = Operator.OpType.Equality; }
2309 | OP_NE { $$ = Operator.OpType.Inequality; }
2310 | OP_GT { $$ = Operator.OpType.GreaterThan; }
2311 | OP_LT { $$ = Operator.OpType.LessThan; }
2312 | OP_GE { $$ = Operator.OpType.GreaterThanOrEqual; }
2313 | OP_LE { $$ = Operator.OpType.LessThanOrEqual; }
2316 if (lang_version != LanguageVersion.Experimental)
2317 FeatureIsNotAvailable (GetLocation ($1), "is user operator");
2319 $$ = Operator.OpType.Is;
2323 conversion_operator_declarator
2324 : IMPLICIT OPERATOR type OPEN_PARENS
2326 valid_param_mod = ParameterModifierType.DefaultValue;
2328 opt_formal_parameter_list CLOSE_PARENS
2330 valid_param_mod = 0;
2332 Location loc = GetLocation ($2);
2333 current_local_parameters = (ParametersCompiled)$6;
2335 if (current_local_parameters.Count != 1) {
2336 report.Error (1535, loc, "Overloaded unary operator `implicit' takes one parameter");
2340 tmpComment = Lexer.consume_doc_comment ();
2341 Lexer.doc_state = XmlCommentState.NotAllowed;
2344 $$ = new OperatorDeclaration (Operator.OpType.Implicit, (FullNamedExpression) $3, loc);
2345 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($2), GetLocation ($4), GetLocation ($7));
2347 | EXPLICIT OPERATOR type OPEN_PARENS
2349 valid_param_mod = ParameterModifierType.DefaultValue;
2351 opt_formal_parameter_list CLOSE_PARENS
2353 valid_param_mod = 0;
2355 Location loc = GetLocation ($2);
2356 current_local_parameters = (ParametersCompiled)$6;
2358 if (current_local_parameters.Count != 1) {
2359 report.Error (1535, loc, "Overloaded unary operator `explicit' takes one parameter");
2363 tmpComment = Lexer.consume_doc_comment ();
2364 Lexer.doc_state = XmlCommentState.NotAllowed;
2367 $$ = new OperatorDeclaration (Operator.OpType.Explicit, (FullNamedExpression) $3, loc);
2368 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($2), GetLocation ($4), GetLocation ($7));
2372 Error_SyntaxError (yyToken);
2373 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
2374 $$ = new OperatorDeclaration (Operator.OpType.Implicit, null, GetLocation ($1));
2378 Error_SyntaxError (yyToken);
2379 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
2380 $$ = new OperatorDeclaration (Operator.OpType.Explicit, null, GetLocation ($1));
2384 constructor_declaration
2385 : constructor_declarator
2388 Constructor c = (Constructor) $1;
2389 c.Block = (ToplevelBlock) $2;
2392 c.DocComment = ConsumeStoredComment ();
2394 current_local_parameters = null;
2396 Lexer.doc_state = XmlCommentState.Allowed;
2400 constructor_declarator
2406 tmpComment = Lexer.consume_doc_comment ();
2407 Lexer.doc_state = XmlCommentState.Allowed;
2410 valid_param_mod = ParameterModifierType.All;
2412 OPEN_PARENS opt_formal_parameter_list CLOSE_PARENS
2414 valid_param_mod = 0;
2415 current_local_parameters = (ParametersCompiled) $6;
2417 var lt = (LocatedToken) $3;
2418 var mods = (Modifiers) $2;
2419 var c = new Constructor (current_type, lt.Value, mods, (Attributes) $1, current_local_parameters, lt.Location);
2421 if (lt.Value != current_container.MemberName.Name) {
2422 report.Error (1520, c.Location, "Class, struct, or interface method must have a return type");
2423 } else if ((mods & Modifiers.STATIC) != 0) {
2424 if (!current_local_parameters.IsEmpty) {
2425 report.Error (132, c.Location, "`{0}': The static constructor must be parameterless",
2426 c.GetSignatureForError ());
2429 if ((mods & Modifiers.AccessibilityMask) != 0){
2430 report.Error (515, c.Location,
2431 "`{0}': static constructor cannot have an access modifier",
2432 c.GetSignatureForError ());
2435 if (current_type.Kind == MemberKind.Struct && current_local_parameters.IsEmpty) {
2436 report.Error (568, c.Location, "Structs cannot contain explicit parameterless constructors");
2440 current_type.AddConstructor (c);
2441 lbag.AddMember (c, mod_locations, GetLocation ($5), GetLocation ($7));
2445 // start block here, so possible anonymous methods inside
2446 // constructor initializer can get correct parent block
2448 start_block (lexer.Location);
2450 opt_constructor_initializer
2453 var c = (Constructor) $8;
2454 c.Initializer = (ConstructorInitializer) $9;
2457 report.Error (514, c.Location,
2458 "`{0}': static constructor cannot have an explicit `this' or `base' constructor call",
2459 c.GetSignatureForError ());
2469 | SEMICOLON { current_block = null; $$ = null; }
2472 opt_constructor_initializer
2474 | constructor_initializer
2477 constructor_initializer
2478 : COLON BASE OPEN_PARENS
2480 ++lexer.parsing_block;
2482 opt_argument_list CLOSE_PARENS
2484 --lexer.parsing_block;
2485 $$ = new ConstructorBaseInitializer ((Arguments) $5, GetLocation ($2));
2486 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3), GetLocation ($6));
2488 | COLON THIS OPEN_PARENS
2490 ++lexer.parsing_block;
2492 opt_argument_list CLOSE_PARENS
2494 --lexer.parsing_block;
2495 $$ = new ConstructorThisInitializer ((Arguments) $5, GetLocation ($2));
2496 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3), GetLocation ($6));
2500 Error_SyntaxError (yyToken);
2501 $$ = new ConstructorThisInitializer (null, GetLocation ($2));
2502 lbag.AddLocation ($$, GetLocation ($1));
2506 Error_SyntaxError (yyToken);
2511 destructor_declaration
2512 : opt_attributes opt_modifiers TILDE
2515 tmpComment = Lexer.consume_doc_comment ();
2516 Lexer.doc_state = XmlCommentState.NotAllowed;
2519 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
2521 IDENTIFIER OPEN_PARENS CLOSE_PARENS method_body
2523 var lt = (LocatedToken) $5;
2524 if (lt.Value != current_container.MemberName.Name){
2525 report.Error (574, lt.Location, "Name of destructor must match name of class");
2526 } else if (current_container.Kind != MemberKind.Class){
2527 report.Error (575, lt.Location, "Only class types can contain destructor");
2530 Destructor d = new Destructor (current_type, (Modifiers) $2,
2531 ParametersCompiled.EmptyReadOnlyParameters, (Attributes) $1, lt.Location);
2533 d.DocComment = ConsumeStoredComment ();
2535 d.Block = (ToplevelBlock) $8;
2536 current_type.AddMember (d);
2537 lbag.AddMember (d, mod_locations, GetLocation ($3), GetLocation ($6), GetLocation ($7));
2539 current_local_parameters = null;
2546 EVENT type member_declaration_name
2548 current_event_field = new EventField (current_type, (FullNamedExpression) $4, (Modifiers) $2, (MemberName) $5, (Attributes) $1);
2549 current_type.AddMember (current_event_field);
2551 if (current_event_field.MemberName.ExplicitInterface != null) {
2552 report.Error (71, current_event_field.Location, "`{0}': An explicit interface implementation of an event must use property syntax",
2553 current_event_field.GetSignatureForError ());
2556 $$ = current_event_field;
2558 opt_event_initializer
2559 opt_event_declarators
2563 current_event_field.DocComment = Lexer.consume_doc_comment ();
2564 Lexer.doc_state = XmlCommentState.Allowed;
2567 lbag.AddMember (current_event_field, mod_locations, GetLocation ($3), GetLocation ($9));
2568 current_event_field = null;
2572 EVENT type member_declaration_name
2575 current_event = new EventProperty (current_type, (FullNamedExpression) $4, (Modifiers) $2, (MemberName) $5, (Attributes) $1);
2576 current_type.AddMember (current_event);
2577 lbag.AddMember (current_event, mod_locations, GetLocation ($3), GetLocation ($6));
2579 lexer.EventParsing = true;
2581 event_accessor_declarations
2583 if (current_container.Kind == MemberKind.Interface)
2584 report.Error (69, GetLocation ($6), "Event in interface cannot have add or remove accessors");
2586 lexer.EventParsing = false;
2591 current_event.DocComment = Lexer.consume_doc_comment ();
2592 Lexer.doc_state = XmlCommentState.Allowed;
2595 lbag.AppendToMember (current_event, GetLocation ($9));
2596 current_event = null;
2597 current_local_parameters = null;
2603 Error_SyntaxError (yyToken);
2605 current_type.AddMember (new EventField (current_type, (FullNamedExpression) $4, (Modifiers) $2, MemberName.Null, (Attributes) $1));
2609 opt_event_initializer
2613 ++lexer.parsing_block;
2615 event_variable_initializer
2617 --lexer.parsing_block;
2618 current_event_field.Initializer = (Expression) $3;
2622 opt_event_declarators
2630 current_event_field.AddDeclarator ((FieldDeclarator) $1);
2632 | event_declarators event_declarator
2634 current_event_field.AddDeclarator ((FieldDeclarator) $2);
2641 var lt = (LocatedToken) $2;
2642 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), null);
2643 lbag.AddLocation ($$, GetLocation ($1));
2645 | COMMA IDENTIFIER ASSIGN
2647 ++lexer.parsing_block;
2649 event_variable_initializer
2651 --lexer.parsing_block;
2652 var lt = (LocatedToken) $2;
2653 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (Expression) $5);
2654 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
2658 event_variable_initializer
2660 if (current_container.Kind == MemberKind.Interface) {
2661 report.Error (68, lexer.Location, "`{0}': event in interface cannot have an initializer",
2662 current_event_field.GetSignatureForError ());
2665 if ((current_event_field.ModFlags & Modifiers.ABSTRACT) != 0) {
2666 report.Error (74, lexer.Location, "`{0}': abstract event cannot have an initializer",
2667 current_event_field.GetSignatureForError ());
2670 variable_initializer
2676 event_accessor_declarations
2677 : add_accessor_declaration remove_accessor_declaration
2678 | remove_accessor_declaration add_accessor_declaration
2679 | add_accessor_declaration
2681 report.Error (65, lexer.Location, "`{0}': event property must have both add and remove accessors",
2682 current_event.GetSignatureForError ());
2684 | remove_accessor_declaration
2686 report.Error (65, lexer.Location, "`{0}': event property must have both add and remove accessors",
2687 current_event.GetSignatureForError ());
2691 report.Error (1055, GetLocation ($1), "An add or remove accessor expected");
2696 add_accessor_declaration
2697 : opt_attributes opt_modifiers ADD
2699 if ($2 != ModifierNone) {
2700 report.Error (1609, GetLocation ($2), "Modifiers cannot be placed on event accessor declarations");
2703 current_event.Add = new EventProperty.AddDelegateMethod (current_event, (Attributes) $1, GetLocation ($3));
2704 current_local_parameters = current_event.Add.ParameterInfo;
2706 lbag.AddMember (current_event.Add, mod_locations);
2707 lexer.EventParsing = false;
2709 event_accessor_block
2711 lexer.EventParsing = true;
2713 current_event.Add.Block = (ToplevelBlock) $5;
2715 if (current_container.Kind == MemberKind.Interface) {
2716 report.Error (531, current_event.Add.Block.StartLocation,
2717 "`{0}': interface members cannot have a definition", current_event.Add.GetSignatureForError ());
2720 current_local_parameters = null;
2724 remove_accessor_declaration
2725 : opt_attributes opt_modifiers REMOVE
2727 if ($2 != ModifierNone) {
2728 report.Error (1609, GetLocation ($2), "Modifiers cannot be placed on event accessor declarations");
2731 current_event.Remove = new EventProperty.RemoveDelegateMethod (current_event, (Attributes) $1, GetLocation ($3));
2732 current_local_parameters = current_event.Remove.ParameterInfo;
2734 lbag.AddMember (current_event.Remove, mod_locations);
2735 lexer.EventParsing = false;
2737 event_accessor_block
2739 lexer.EventParsing = true;
2741 current_event.Remove.Block = (ToplevelBlock) $5;
2743 if (current_container.Kind == MemberKind.Interface) {
2744 report.Error (531, current_event.Remove.Block.StartLocation,
2745 "`{0}': interface members cannot have a definition", current_event.Remove.GetSignatureForError ());
2748 current_local_parameters = null;
2752 event_accessor_block
2755 report.Error (73, lexer.Location, "An add or remove accessor must have a body");
2762 attributes_without_members
2763 : attribute_sections CLOSE_BRACE
2765 current_type.UnattachedAttributes = (Attributes) $1;
2766 report.Error (1519, GetLocation ($1), "An attribute is missing member declaration");
2767 lexer.putback ('}');
2771 // For full ast try to recover incomplete ambiguous member
2772 // declaration in form on class X { public int }
2774 : opt_attributes opt_modifiers member_type CLOSE_BRACE
2776 report.Error (1519, lexer.Location, "Unexpected symbol `}' in class, struct, or interface member declaration");
2778 lexer.putback ('}');
2780 lexer.parsing_generic_declaration = false;
2781 FullNamedExpression type = (FullNamedExpression) $3;
2782 current_field = new Field (current_type, type, (Modifiers) $2, MemberName.Null, (Attributes) $1);
2783 current_type.AddField (current_field);
2791 ENUM type_declaration_name
2795 enumTypeComment = Lexer.consume_doc_comment ();
2800 Lexer.doc_state = XmlCommentState.Allowed;
2802 MemberName name = (MemberName) $4;
2803 if (name.IsGeneric) {
2804 report.Error (1675, name.Location, "Enums cannot have type parameters");
2807 push_current_container (new Enum (current_container, (FullNamedExpression) $5, (Modifiers) $2, name, (Attributes) $1), null);
2809 opt_enum_member_declarations
2811 lexer.parsing_modifiers = true;
2813 // here will be evaluated after CLOSE_BLACE is consumed.
2815 Lexer.doc_state = XmlCommentState.Allowed;
2817 CLOSE_BRACE opt_semicolon
2820 current_container.DocComment = enumTypeComment;
2822 --lexer.parsing_declaration;
2825 // em.DocComment = ev.DocComment;
2827 lbag.AddMember (current_container, mod_locations, GetLocation ($3), GetLocation ($7), GetLocation ($11));
2828 $$ = pop_current_class ();
2840 Error_TypeExpected (GetLocation ($1));
2845 opt_enum_member_declarations
2847 | enum_member_declarations
2848 | enum_member_declarations COMMA
2850 lbag.AddLocation ($1, GetLocation ($2));
2854 enum_member_declarations
2855 : enum_member_declaration
2856 | enum_member_declarations COMMA enum_member_declaration
2858 lbag.AddLocation ($1, GetLocation ($2));
2863 enum_member_declaration
2864 : opt_attributes IDENTIFIER
2866 var lt = (LocatedToken) $2;
2867 var em = new EnumMember ((Enum) current_type, new MemberName (lt.Value, lt.Location), (Attributes) $1);
2868 ((Enum) current_type).AddEnumMember (em);
2871 em.DocComment = Lexer.consume_doc_comment ();
2872 Lexer.doc_state = XmlCommentState.Allowed;
2877 | opt_attributes IDENTIFIER
2879 ++lexer.parsing_block;
2881 tmpComment = Lexer.consume_doc_comment ();
2882 Lexer.doc_state = XmlCommentState.NotAllowed;
2885 ASSIGN constant_expression
2887 --lexer.parsing_block;
2889 var lt = (LocatedToken) $2;
2890 var em = new EnumMember ((Enum) current_type, new MemberName (lt.Value, lt.Location), (Attributes) $1);
2891 em.Initializer = new ConstInitializer (em, (Expression) $5, GetLocation ($4));
2892 ((Enum) current_type).AddEnumMember (em);
2895 em.DocComment = ConsumeStoredComment ();
2899 | opt_attributes IDENTIFIER error
2901 Error_SyntaxError (yyToken);
2903 var lt = (LocatedToken) $2;
2904 var em = new EnumMember ((Enum) current_type, new MemberName (lt.Value, lt.Location), (Attributes) $1);
2905 ((Enum) current_type).AddEnumMember (em);
2908 em.DocComment = Lexer.consume_doc_comment ();
2909 Lexer.doc_state = XmlCommentState.Allowed;
2914 | attributes_without_members
2917 delegate_declaration
2921 member_type type_declaration_name
2924 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out | ParameterModifierType.Params | ParameterModifierType.DefaultValue;
2926 opt_formal_parameter_list CLOSE_PARENS
2928 valid_param_mod = 0;
2930 ParametersCompiled p = (ParametersCompiled) $8;
2932 Delegate del = new Delegate (current_container, (FullNamedExpression) $4, (Modifiers) $2, (MemberName) $5, p, (Attributes) $1);
2934 p.CheckParameters (del);
2936 current_container.AddTypeContainer (del);
2938 current_delegate = del;
2939 lexer.ConstraintsParsing = true;
2941 opt_type_parameter_constraints_clauses
2943 lexer.ConstraintsParsing = false;
2948 current_delegate.DocComment = Lexer.consume_doc_comment ();
2949 Lexer.doc_state = XmlCommentState.Allowed;
2953 current_delegate.SetConstraints ((List<Constraints>) $11);
2954 lbag.AddMember (current_delegate, mod_locations, GetLocation ($3), GetLocation ($6), GetLocation ($9), GetLocation ($13));
2956 $$ = current_delegate;
2958 current_delegate = null;
2966 if (lang_version < LanguageVersion.ISO_2)
2967 FeatureIsNotAvailable (GetLocation ($1), "nullable types");
2969 $$ = ComposedTypeSpecifier.CreateNullable (GetLocation ($1));
2973 namespace_or_type_expr
2975 | qualified_alias_member IDENTIFIER opt_type_argument_list
2977 var lt1 = (LocatedToken) $1;
2978 var lt2 = (LocatedToken) $2;
2980 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (TypeArguments) $3, lt1.Location);
2981 lbag.AddLocation ($$, GetLocation ($2));
2983 | qualified_alias_member IDENTIFIER generic_dimension
2985 var lt1 = (LocatedToken) $1;
2986 var lt2 = (LocatedToken) $2;
2988 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) $3, lt1.Location);
2989 lbag.AddLocation ($$, GetLocation ($2));
2995 | namespace_or_type_expr DOT IDENTIFIER opt_type_argument_list
2997 var lt = (LocatedToken) $3;
2998 $$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
2999 lbag.AddLocation ($$, GetLocation ($2));
3001 | namespace_or_type_expr DOT IDENTIFIER generic_dimension
3003 var lt = (LocatedToken) $3;
3004 $$ = new MemberAccess ((Expression) $1, lt.Value, (int) $4, lt.Location);
3005 lbag.AddLocation ($$, GetLocation ($2));
3010 : IDENTIFIER opt_type_argument_list
3012 var lt = (LocatedToken) $1;
3013 $$ = new SimpleName (lt.Value, (TypeArguments)$2, lt.Location);
3015 | IDENTIFIER generic_dimension
3017 var lt = (LocatedToken) $1;
3018 $$ = new SimpleName (lt.Value, (int) $2, lt.Location);
3023 // Generics arguments (any type, without attributes)
3025 opt_type_argument_list
3027 | OP_GENERICS_LT type_arguments OP_GENERICS_GT
3029 if (lang_version < LanguageVersion.ISO_2)
3030 FeatureIsNotAvailable (GetLocation ($1), "generics");
3034 | OP_GENERICS_LT error
3036 Error_TypeExpected (lexer.Location);
3037 $$ = new TypeArguments ();
3044 TypeArguments type_args = new TypeArguments ();
3045 type_args.Add ((FullNamedExpression) $1);
3048 | type_arguments COMMA type
3050 TypeArguments type_args = (TypeArguments) $1;
3051 type_args.Add ((FullNamedExpression) $3);
3057 // Generics parameters (identifiers only, with attributes), used in type or method declarations
3059 type_declaration_name
3062 lexer.parsing_generic_declaration = true;
3064 opt_type_parameter_list
3066 lexer.parsing_generic_declaration = false;
3067 var lt = (LocatedToken) $1;
3068 $$ = new MemberName (lt.Value, (TypeParameters)$3, lt.Location);
3072 member_declaration_name
3073 : method_declaration_name
3075 MemberName mn = (MemberName)$1;
3076 if (mn.TypeParameters != null)
3077 syntax_error (mn.Location, string.Format ("Member `{0}' cannot declare type arguments",
3078 mn.GetSignatureForError ()));
3082 method_declaration_name
3083 : type_declaration_name
3084 | explicit_interface IDENTIFIER opt_type_parameter_list
3086 lexer.parsing_generic_declaration = false;
3087 var lt = (LocatedToken) $2;
3088 $$ = new MemberName (lt.Value, (TypeParameters) $3, (ATypeNameExpression) $1, lt.Location);
3092 indexer_declaration_name
3095 lexer.parsing_generic_declaration = false;
3096 $$ = new MemberName (TypeDefinition.DefaultIndexerName, GetLocation ($1));
3098 | explicit_interface THIS
3100 lexer.parsing_generic_declaration = false;
3101 $$ = new MemberName (TypeDefinition.DefaultIndexerName, null, (ATypeNameExpression) $1, GetLocation ($2));
3106 : IDENTIFIER opt_type_argument_list DOT
3108 var lt = (LocatedToken) $1;
3109 $$ = new SimpleName (lt.Value, (TypeArguments) $2, lt.Location);
3110 lbag.AddLocation ($$, GetLocation ($3));
3112 | qualified_alias_member IDENTIFIER opt_type_argument_list DOT
3114 var lt1 = (LocatedToken) $1;
3115 var lt2 = (LocatedToken) $2;
3117 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (TypeArguments) $3, lt1.Location);
3118 lbag.AddLocation ($$, GetLocation ($4));
3120 | explicit_interface IDENTIFIER opt_type_argument_list DOT
3122 var lt = (LocatedToken) $2;
3123 $$ = new MemberAccess ((ATypeNameExpression) $1, lt.Value, (TypeArguments) $3, lt.Location);
3124 lbag.AddLocation ($$, GetLocation ($4));
3128 opt_type_parameter_list
3130 | OP_GENERICS_LT_DECL type_parameters OP_GENERICS_GT
3132 if (lang_version < LanguageVersion.ISO_2)
3133 FeatureIsNotAvailable (GetLocation ($1), "generics");
3136 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
3143 var tparams = new TypeParameters ();
3144 tparams.Add ((TypeParameter)$1);
3147 | type_parameters COMMA type_parameter
3149 var tparams = (TypeParameters) $1;
3150 tparams.Add ((TypeParameter)$3);
3152 lbag.AddLocation ($3, GetLocation ($3));
3157 : opt_attributes opt_type_parameter_variance IDENTIFIER
3159 var lt = (LocatedToken)$3;
3160 $$ = new TypeParameter (new MemberName (lt.Value, lt.Location), (Attributes)$1, (VarianceDecl) $2);
3164 if (GetTokenName (yyToken) == "type")
3165 report.Error (81, GetLocation ($1), "Type parameter declaration must be an identifier not a type");
3167 Error_SyntaxError (yyToken);
3169 $$ = new TypeParameter (MemberName.Null, null, null);
3174 // All types where void is allowed
3177 : type_expression_or_array
3180 $$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
3187 lexer.parsing_generic_declaration = true;
3192 // A type which does not allow `void' to be used
3195 : type_expression_or_array
3205 : type_expression_or_array
3208 report.Error (1536, GetLocation ($1), "Invalid parameter type `void'");
3209 $$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
3213 type_expression_or_array
3215 | type_expression rank_specifiers
3217 $$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
3222 : namespace_or_type_expr opt_nullable
3225 $$ = new ComposedCast ((ATypeNameExpression) $1, (ComposedTypeSpecifier) $2);
3227 var sn = $1 as SimpleName;
3228 if (sn != null && sn.Name == "var")
3229 $$ = new VarExpr (sn.Location);
3234 | namespace_or_type_expr pointer_stars
3236 $$ = new ComposedCast ((ATypeNameExpression) $1, (ComposedTypeSpecifier) $2);
3238 | builtin_type_expression
3244 Expression.Error_VoidInvalidInTheContext (GetLocation ($1), report);
3245 $$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
3249 builtin_type_expression
3250 : builtin_types opt_nullable
3253 $$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
3255 | builtin_types pointer_stars
3257 $$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
3259 | VOID pointer_stars
3261 $$ = new ComposedCast (new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1)), (ComposedTypeSpecifier) $2);
3268 var types = new List<FullNamedExpression> (2);
3269 types.Add ((FullNamedExpression) $1);
3272 | type_list COMMA base_type_name
3274 var types = (List<FullNamedExpression>) $1;
3275 types.Add ((FullNamedExpression) $3);
3283 if ($1 is ComposedCast) {
3284 report.Error (1521, GetLocation ($1), "Invalid base type `{0}'", ((ComposedCast)$1).GetSignatureForError ());
3291 * replaces all the productions for isolating the various
3292 * simple types, but we need this to reuse it easily in variable_type
3295 : OBJECT { $$ = new TypeExpression (compiler.BuiltinTypes.Object, GetLocation ($1)); }
3296 | STRING { $$ = new TypeExpression (compiler.BuiltinTypes.String, GetLocation ($1)); }
3297 | BOOL { $$ = new TypeExpression (compiler.BuiltinTypes.Bool, GetLocation ($1)); }
3298 | DECIMAL { $$ = new TypeExpression (compiler.BuiltinTypes.Decimal, GetLocation ($1)); }
3299 | FLOAT { $$ = new TypeExpression (compiler.BuiltinTypes.Float, GetLocation ($1)); }
3300 | DOUBLE { $$ = new TypeExpression (compiler.BuiltinTypes.Double, GetLocation ($1)); }
3305 : SBYTE { $$ = new TypeExpression (compiler.BuiltinTypes.SByte, GetLocation ($1)); }
3306 | BYTE { $$ = new TypeExpression (compiler.BuiltinTypes.Byte, GetLocation ($1)); }
3307 | SHORT { $$ = new TypeExpression (compiler.BuiltinTypes.Short, GetLocation ($1)); }
3308 | USHORT { $$ = new TypeExpression (compiler.BuiltinTypes.UShort, GetLocation ($1)); }
3309 | INT { $$ = new TypeExpression (compiler.BuiltinTypes.Int, GetLocation ($1)); }
3310 | UINT { $$ = new TypeExpression (compiler.BuiltinTypes.UInt, GetLocation ($1)); }
3311 | LONG { $$ = new TypeExpression (compiler.BuiltinTypes.Long, GetLocation ($1)); }
3312 | ULONG { $$ = new TypeExpression (compiler.BuiltinTypes.ULong, GetLocation ($1)); }
3313 | CHAR { $$ = new TypeExpression (compiler.BuiltinTypes.Char, GetLocation ($1)); }
3317 // Expressions, section 7.5
3322 : type_name_expression
3324 | array_creation_expression
3325 | parenthesized_expression
3326 | default_value_expression
3327 | invocation_expression
3331 | post_increment_expression
3332 | post_decrement_expression
3333 | object_or_delegate_creation_expression
3334 | anonymous_type_expression
3337 | checked_expression
3338 | unchecked_expression
3339 | pointer_member_access
3340 | anonymous_method_expression
3341 | undocumented_expressions
3342 | interpolated_string
3345 type_name_expression
3347 | IDENTIFIER GENERATE_COMPLETION {
3348 var lt = (LocatedToken) $1;
3349 $$ = new CompletionSimpleName (MemberName.MakeName (lt.Value, null), lt.Location);
3357 | NULL { $$ = new NullLiteral (GetLocation ($1)); }
3361 : TRUE { $$ = new BoolLiteral (compiler.BuiltinTypes, true, GetLocation ($1)); }
3362 | FALSE { $$ = new BoolLiteral (compiler.BuiltinTypes, false, GetLocation ($1)); }
3366 : INTERPOLATED_STRING interpolations INTERPOLATED_STRING_END
3368 if (lang_version < LanguageVersion.V_6)
3369 FeatureIsNotAvailable (GetLocation ($1), "interpolated strings");
3371 $$ = new InterpolatedString ((StringLiteral) $1, (List<Expression>) $2, (StringLiteral) $3);
3373 | INTERPOLATED_STRING_END
3375 if (lang_version < LanguageVersion.V_6)
3376 FeatureIsNotAvailable (GetLocation ($1), "interpolated strings");
3378 $$ = new InterpolatedString ((StringLiteral) $1, null, null);
3385 var list = new List<Expression> ();
3386 list.Add ((InterpolatedStringInsert) $1);
3389 | interpolations INTERPOLATED_STRING interpolation
3391 var list = (List<Expression>) $1;
3392 list.Add ((StringLiteral) $2);
3393 list.Add ((InterpolatedStringInsert) $3);
3401 $$ = new InterpolatedStringInsert ((Expression) $1);
3403 | expression COMMA expression
3405 $$ = new InterpolatedStringInsert ((Expression) $1) {
3406 Alignment = (Expression)$3
3411 lexer.parsing_interpolation_format = true;
3415 lexer.parsing_interpolation_format = false;
3417 $$ = new InterpolatedStringInsert ((Expression) $1) {
3421 | expression COMMA expression COLON
3423 lexer.parsing_interpolation_format = true;
3427 lexer.parsing_interpolation_format = false;
3429 $$ = new InterpolatedStringInsert ((Expression) $1) {
3430 Alignment = (Expression)$3,
3431 Format = (string) $6
3438 // Here is the trick, tokenizer may think that parens is a special but
3439 // parser is interested in open parens only, so we merge them.
3440 // Consider: if (a)foo ();
3448 // Use this production to accept closing parenthesis or
3449 // performing completion
3453 | COMPLETE_COMPLETION
3457 parenthesized_expression
3458 : OPEN_PARENS expression CLOSE_PARENS
3460 $$ = new ParenthesizedExpression ((Expression) $2, GetLocation ($1));
3461 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
3463 | OPEN_PARENS expression COMPLETE_COMPLETION
3465 $$ = new ParenthesizedExpression ((Expression) $2, GetLocation ($1));
3470 : primary_expression DOT identifier_inside_body opt_type_argument_list
3472 var lt = (LocatedToken) $3;
3473 $$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
3474 lbag.AddLocation ($$, GetLocation ($2));
3476 | primary_expression DOT identifier_inside_body generic_dimension
3478 var lt = (LocatedToken) $3;
3479 $$ = new MemberAccess ((Expression) $1, lt.Value, (int) $4, lt.Location);
3480 lbag.AddLocation ($$, GetLocation ($2));
3482 | primary_expression INTERR_OPERATOR DOT identifier_inside_body opt_type_argument_list
3484 if (lang_version < LanguageVersion.V_6)
3485 FeatureIsNotAvailable (GetLocation ($2), "null propagating operator");
3487 var lt = (LocatedToken) $4;
3488 $$ = new ConditionalMemberAccess ((Expression) $1, lt.Value, (TypeArguments) $5, lt.Location);
3489 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($3));
3491 | builtin_types DOT identifier_inside_body opt_type_argument_list
3493 var lt = (LocatedToken) $3;
3494 $$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
3495 lbag.AddLocation ($$, GetLocation ($2));
3497 | BASE DOT identifier_inside_body opt_type_argument_list
3499 var lt = (LocatedToken) $3;
3500 $$ = new MemberAccess (new BaseThis (GetLocation ($1)), lt.Value, (TypeArguments) $4, lt.Location);
3501 lbag.AddLocation ($$, GetLocation ($2));
3503 | AWAIT DOT identifier_inside_body opt_type_argument_list
3505 var lt = (LocatedToken) $3;
3506 $$ = new MemberAccess (new SimpleName ("await", ((LocatedToken) $1).Location), lt.Value, (TypeArguments) $4, lt.Location);
3507 lbag.AddLocation ($$, GetLocation ($2));
3509 | qualified_alias_member identifier_inside_body opt_type_argument_list
3511 var lt1 = (LocatedToken) $1;
3512 var lt2 = (LocatedToken) $2;
3514 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (TypeArguments) $3, lt1.Location);
3515 lbag.AddLocation ($$, GetLocation ($2));
3517 | qualified_alias_member identifier_inside_body generic_dimension
3519 var lt1 = (LocatedToken) $1;
3520 var lt2 = (LocatedToken) $2;
3522 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) $3, lt1.Location);
3523 lbag.AddLocation ($$, GetLocation ($2));
3525 | primary_expression DOT GENERATE_COMPLETION {
3526 $$ = new CompletionMemberAccess ((Expression) $1, null,GetLocation ($3));
3528 | primary_expression DOT IDENTIFIER GENERATE_COMPLETION {
3529 var lt = (LocatedToken) $3;
3530 $$ = new CompletionMemberAccess ((Expression) $1, lt.Value, lt.Location);
3532 | builtin_types DOT GENERATE_COMPLETION
3534 $$ = new CompletionMemberAccess ((Expression) $1, null, lexer.Location);
3536 | builtin_types DOT IDENTIFIER GENERATE_COMPLETION {
3537 var lt = (LocatedToken) $3;
3538 $$ = new CompletionMemberAccess ((Expression) $1, lt.Value, lt.Location);
3542 invocation_expression
3543 : primary_expression open_parens_any opt_argument_list close_parens
3545 $$ = new Invocation ((Expression) $1, (Arguments) $3);
3546 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
3548 | primary_expression open_parens_any argument_list error
3550 Error_SyntaxError (yyToken);
3552 $$ = new Invocation ((Expression) $1, (Arguments) $3);
3553 lbag.AddLocation ($$, GetLocation ($2));
3555 | primary_expression open_parens_any error
3557 Error_SyntaxError (yyToken);
3559 $$ = new Invocation ((Expression) $1, null);
3560 lbag.AddLocation ($$, GetLocation ($2));
3564 opt_object_or_collection_initializer
3565 : /* empty */ { $$ = null; }
3566 | object_or_collection_initializer
3569 object_or_collection_initializer
3570 : OPEN_BRACE opt_member_initializer_list close_brace_or_complete_completion
3573 $$ = new CollectionOrObjectInitializers (GetLocation ($1));
3575 $$ = new CollectionOrObjectInitializers ((List<Expression>) $2, GetLocation ($1));
3577 lbag.AddLocation ($$, GetLocation ($3));
3579 | OPEN_BRACE member_initializer_list COMMA CLOSE_BRACE
3581 $$ = new CollectionOrObjectInitializers ((List<Expression>) $2, GetLocation ($1));
3582 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($4));
3586 opt_member_initializer_list
3587 : /* empty */ { $$ = null; }
3588 | member_initializer_list
3594 member_initializer_list
3595 : member_initializer
3597 var a = new List<Expression> ();
3598 a.Add ((Expression) $1);
3601 | member_initializer_list COMMA member_initializer
3603 var a = (List<Expression>)$1;
3604 a.Add ((Expression) $3);
3607 | member_initializer_list error {
3608 Error_SyntaxError (yyToken);
3614 : IDENTIFIER ASSIGN initializer_value
3616 var lt = (LocatedToken) $1;
3617 $$ = new ElementInitializer (lt.Value, (Expression)$3, lt.Location);
3618 lbag.AddLocation ($$, GetLocation ($2));
3620 | AWAIT ASSIGN initializer_value
3622 var lt = (LocatedToken) Error_AwaitAsIdentifier ($1);
3623 $$ = new ElementInitializer (lt.Value, (Expression)$3, lt.Location);
3624 lbag.AddLocation ($$, GetLocation ($2));
3626 | GENERATE_COMPLETION
3628 $$ = new CompletionElementInitializer (null, GetLocation ($1));
3630 | non_assignment_expression opt_COMPLETE_COMPLETION {
3631 CompletionSimpleName csn = $1 as CompletionSimpleName;
3633 $$ = new CollectionElementInitializer ((Expression)$1);
3635 $$ = new CompletionElementInitializer (csn.Prefix, csn.Location);
3637 | OPEN_BRACE expression_list CLOSE_BRACE
3640 $$ = new CollectionElementInitializer (GetLocation ($1));
3642 $$ = new CollectionElementInitializer ((List<Expression>)$2, GetLocation ($1));
3644 lbag.AddLocation ($$, GetLocation ($3));
3646 | OPEN_BRACKET_EXPR argument_list CLOSE_BRACKET ASSIGN initializer_value
3648 if (lang_version < LanguageVersion.V_6)
3649 FeatureIsNotAvailable (GetLocation ($1), "dictionary initializer");
3651 $$ = new DictionaryElementInitializer ((Arguments)$2, (Expression) $5, GetLocation ($1));
3652 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($4));
3654 | OPEN_BRACE CLOSE_BRACE
3656 report.Error (1920, GetLocation ($1), "An element initializer cannot be empty");
3657 $$ = new CollectionElementInitializer (GetLocation ($1));
3658 lbag.AddLocation ($$, GetLocation ($2));
3664 | object_or_collection_initializer
3668 : /* empty */ { $$ = null; }
3673 : argument_or_named_argument
3675 Arguments list = new Arguments (4);
3676 list.Add ((Argument) $1);
3679 | argument_list COMMA argument
3681 Arguments list = (Arguments) $1;
3682 if (list [list.Count - 1] is NamedArgument)
3683 Error_NamedArgumentExpected ((NamedArgument) list [list.Count - 1]);
3685 list.Add ((Argument) $3);
3688 | argument_list COMMA named_argument
3690 Arguments list = (Arguments) $1;
3691 NamedArgument a = (NamedArgument) $3;
3692 for (int i = 0; i < list.Count; ++i) {
3693 NamedArgument na = list [i] as NamedArgument;
3694 if (na != null && na.Name == a.Name)
3695 report.Error (1740, na.Location, "Named argument `{0}' specified multiple times",
3702 | argument_list COMMA error
3704 if (lexer.putback_char == -1)
3705 lexer.putback (')'); // TODO: Wrong but what can I do
3706 Error_SyntaxError (yyToken);
3711 report.Error (839, GetLocation ($1), "An argument is missing");
3719 $$ = new Argument ((Expression) $1);
3721 | non_simple_argument
3724 argument_or_named_argument
3730 : REF variable_reference
3732 $$ = new Argument ((Expression) $2, Argument.AType.Ref);
3733 lbag.AddLocation ($$, GetLocation ($1));
3735 | OUT variable_reference
3737 $$ = new Argument ((Expression) $2, Argument.AType.Out);
3738 lbag.AddLocation ($$, GetLocation ($1));
3740 | OUT out_variable_declaration
3742 $$ = new Argument ((Expression) $2, Argument.AType.Out);
3744 | ARGLIST OPEN_PARENS argument_list CLOSE_PARENS
3746 $$ = new Argument (new Arglist ((Arguments) $3, GetLocation ($1)));
3747 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
3749 | ARGLIST OPEN_PARENS CLOSE_PARENS
3751 $$ = new Argument (new Arglist (GetLocation ($1)));
3752 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($3));
3756 out_variable_declaration
3757 : variable_type identifier_inside_body
3759 if (lang_version < LanguageVersion.V_7)
3760 FeatureIsNotAvailable (GetLocation ($1), "out variable declaration");
3762 var lt = (LocatedToken) $2;
3763 var lv = new LocalVariable (current_block, lt.Value, lt.Location);
3764 current_block.AddLocalName (lv);
3765 $$ = new DeclarationExpression ((FullNamedExpression) $1, lv);
3774 : primary_expression OPEN_BRACKET_EXPR expression_list_arguments CLOSE_BRACKET
3776 $$ = new ElementAccess ((Expression) $1, (Arguments) $3, GetLocation ($2));
3777 lbag.AddLocation ($$, GetLocation ($4));
3779 | primary_expression INTERR_OPERATOR OPEN_BRACKET_EXPR expression_list_arguments CLOSE_BRACKET
3781 if (lang_version < LanguageVersion.V_6)
3782 FeatureIsNotAvailable (GetLocation ($2), "null propagating operator");
3784 $$ = new ElementAccess ((Expression) $1, (Arguments) $4, GetLocation ($3)) {
3785 ConditionalAccess = true
3788 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($5));
3790 | primary_expression OPEN_BRACKET_EXPR expression_list_arguments error
3792 Error_SyntaxError (yyToken);
3793 $$ = new ElementAccess ((Expression) $1, (Arguments) $3, GetLocation ($2));
3795 | primary_expression OPEN_BRACKET_EXPR error
3797 Error_SyntaxError (yyToken);
3798 $$ = new ElementAccess ((Expression) $1, null, GetLocation ($2));
3803 : expression_or_error
3805 var list = new List<Expression> (4);
3806 list.Add ((Expression) $1);
3809 | expression_list COMMA expression_or_error
3811 var list = (List<Expression>) $1;
3812 list.Add ((Expression) $3);
3817 expression_list_arguments
3818 : expression_list_argument
3820 Arguments args = new Arguments (4);
3821 args.Add ((Argument) $1);
3824 | expression_list_arguments COMMA expression_list_argument
3826 Arguments args = (Arguments) $1;
3827 if (args [args.Count - 1] is NamedArgument && !($3 is NamedArgument))
3828 Error_NamedArgumentExpected ((NamedArgument) args [args.Count - 1]);
3830 args.Add ((Argument) $3);
3835 expression_list_argument
3838 $$ = new Argument ((Expression) $1);
3846 $$ = new This (GetLocation ($1));
3851 : BASE OPEN_BRACKET_EXPR expression_list_arguments CLOSE_BRACKET
3853 $$ = new ElementAccess (new BaseThis (GetLocation ($1)), (Arguments) $3, GetLocation ($2));
3854 lbag.AddLocation ($$, GetLocation ($4));
3856 | BASE OPEN_BRACKET error
3858 Error_SyntaxError (yyToken);
3859 $$ = new ElementAccess (null, null, GetLocation ($2));
3863 post_increment_expression
3864 : primary_expression OP_INC
3866 $$ = new UnaryMutator (UnaryMutator.Mode.PostIncrement, (Expression) $1, GetLocation ($2));
3870 post_decrement_expression
3871 : primary_expression OP_DEC
3873 $$ = new UnaryMutator (UnaryMutator.Mode.PostDecrement, (Expression) $1, GetLocation ($2));
3877 object_or_delegate_creation_expression
3878 : NEW new_expr_type open_parens_any opt_argument_list CLOSE_PARENS opt_object_or_collection_initializer
3881 if (lang_version <= LanguageVersion.ISO_2)
3882 FeatureIsNotAvailable (GetLocation ($1), "object initializers");
3884 $$ = new NewInitialize ((FullNamedExpression) $2, (Arguments) $4, (CollectionOrObjectInitializers) $6, GetLocation ($1));
3886 $$ = new New ((FullNamedExpression) $2, (Arguments) $4, GetLocation ($1));
3889 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($5));
3891 | NEW new_expr_type object_or_collection_initializer
3893 if (lang_version <= LanguageVersion.ISO_2)
3894 FeatureIsNotAvailable (GetLocation ($1), "collection initializers");
3896 $$ = new NewInitialize ((FullNamedExpression) $2, null, (CollectionOrObjectInitializers) $3, GetLocation ($1));
3900 array_creation_expression
3901 : NEW new_expr_type OPEN_BRACKET_EXPR expression_list CLOSE_BRACKET
3903 opt_array_initializer
3905 $$ = new ArrayCreation ((FullNamedExpression) $2, (List<Expression>) $4,
3906 new ComposedTypeSpecifier (((List<Expression>) $4).Count, GetLocation ($3)) {
3907 Next = (ComposedTypeSpecifier) $6
3908 }, (ArrayInitializer) $7, GetLocation ($1)) {
3909 NoEmptyInterpolation = true
3912 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($5));
3914 | NEW new_expr_type rank_specifiers opt_array_initializer
3917 report.Error (1586, GetLocation ($1), "Array creation must have array size or array initializer");
3919 $$ = new ArrayCreation ((FullNamedExpression) $2, (ComposedTypeSpecifier) $3, (ArrayInitializer) $4, GetLocation ($1)) {
3920 NoEmptyInterpolation = true
3923 | NEW rank_specifier array_initializer
3925 if (lang_version <= LanguageVersion.ISO_2)
3926 FeatureIsNotAvailable (GetLocation ($1), "implicitly typed arrays");
3928 $$ = new ImplicitlyTypedArrayCreation ((ComposedTypeSpecifier) $2, (ArrayInitializer) $3, GetLocation ($1));
3930 | NEW new_expr_type OPEN_BRACKET CLOSE_BRACKET OPEN_BRACKET_EXPR error CLOSE_BRACKET
3932 report.Error (178, GetLocation ($6), "Invalid rank specifier, expecting `,' or `]'");
3933 $$ = new ArrayCreation ((FullNamedExpression) $2, null, GetLocation ($1));
3935 | NEW new_expr_type error
3937 Error_SyntaxError (yyToken);
3938 // It can be any of new expression, create the most common one
3939 $$ = new New ((FullNamedExpression) $2, null, GetLocation ($1));
3945 ++lexer.parsing_type;
3949 --lexer.parsing_type;
3954 anonymous_type_expression
3955 : NEW OPEN_BRACE anonymous_type_parameters_opt_comma CLOSE_BRACE
3957 if (lang_version <= LanguageVersion.ISO_2)
3958 FeatureIsNotAvailable (GetLocation ($1), "anonymous types");
3960 $$ = new NewAnonymousType ((List<AnonymousTypeParameter>) $3, current_container, GetLocation ($1));
3962 // TODO: lbag comma location
3963 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
3965 | NEW OPEN_BRACE GENERATE_COMPLETION
3967 $$ = new EmptyCompletion ();
3971 anonymous_type_parameters_opt_comma
3972 : anonymous_type_parameters_opt
3973 | anonymous_type_parameters COMMA
3976 anonymous_type_parameters_opt
3978 | anonymous_type_parameters
3981 anonymous_type_parameters
3982 : anonymous_type_parameter
3984 var a = new List<AnonymousTypeParameter> (4);
3985 a.Add ((AnonymousTypeParameter) $1);
3988 | anonymous_type_parameters COMMA anonymous_type_parameter
3990 var a = (List<AnonymousTypeParameter>) $1;
3991 a.Add ((AnonymousTypeParameter) $3);
3994 | COMPLETE_COMPLETION
3996 $$ = new EmptyCompletion ();
3998 | anonymous_type_parameter COMPLETE_COMPLETION
4004 anonymous_type_parameter
4005 : identifier_inside_body ASSIGN variable_initializer
4007 var lt = (LocatedToken)$1;
4008 $$ = new AnonymousTypeParameter ((Expression)$3, lt.Value, lt.Location);
4009 lbag.AddLocation ($$, GetLocation ($2));
4011 | identifier_inside_body
4013 var lt = (LocatedToken)$1;
4014 $$ = new AnonymousTypeParameter (new SimpleName (lt.Value, lt.Location),
4015 lt.Value, lt.Location);
4019 MemberAccess ma = (MemberAccess) $1;
4020 $$ = new AnonymousTypeParameter (ma, ma.Name, ma.Location);
4024 report.Error (746, lexer.Location,
4025 "Invalid anonymous type member declarator. Anonymous type members must be a member assignment, simple name or member access expression");
4037 | rank_specifier rank_specifiers
4039 ((ComposedTypeSpecifier) $1).Next = (ComposedTypeSpecifier) $2;
4045 : OPEN_BRACKET CLOSE_BRACKET
4047 $$ = ComposedTypeSpecifier.CreateArrayDimension (1, GetLocation ($1));
4048 lbag.AddLocation ($$, GetLocation ($2));
4050 | OPEN_BRACKET dim_separators CLOSE_BRACKET
4052 $$ = ComposedTypeSpecifier.CreateArrayDimension ((int)$2, GetLocation ($1));
4053 lbag.AddLocation ($$, GetLocation ($3));
4062 | dim_separators COMMA
4064 $$ = ((int) $1) + 1;
4068 opt_array_initializer
4080 : OPEN_BRACE CLOSE_BRACE
4082 var ai = new ArrayInitializer (0, GetLocation ($1));
4083 ai.VariableDeclaration = current_variable;
4084 lbag.AddLocation (ai, GetLocation ($2));
4087 | OPEN_BRACE variable_initializer_list opt_comma CLOSE_BRACE
4089 var ai = new ArrayInitializer ((List<Expression>) $2, GetLocation ($1));
4090 ai.VariableDeclaration = current_variable;
4092 lbag.AddLocation (ai, GetLocation ($3), GetLocation ($4));
4094 lbag.AddLocation (ai, GetLocation ($4));
4100 variable_initializer_list
4101 : variable_initializer
4103 var list = new List<Expression> (4);
4104 list.Add ((Expression) $1);
4107 | variable_initializer_list COMMA variable_initializer
4109 var list = (List<Expression>) $1;
4110 list.Add ((Expression) $3);
4116 : TYPEOF open_parens_any typeof_type_expression CLOSE_PARENS
4118 $$ = new TypeOf ((FullNamedExpression) $3, GetLocation ($1));
4119 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4123 typeof_type_expression
4127 Error_TypeExpected (lexer.Location);
4135 if (lang_version < LanguageVersion.ISO_2)
4136 FeatureIsNotAvailable (GetLocation ($1), "generics");
4142 qualified_alias_member
4143 : IDENTIFIER DOUBLE_COLON
4145 var lt = (LocatedToken) $1;
4146 if (lang_version == LanguageVersion.ISO_1)
4147 FeatureIsNotAvailable (lt.Location, "namespace alias qualifier");
4154 : SIZEOF open_parens_any type CLOSE_PARENS
4156 $$ = new SizeOf ((Expression) $3, GetLocation ($1));
4157 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4159 | SIZEOF open_parens_any type error
4161 Error_SyntaxError (yyToken);
4163 $$ = new SizeOf ((Expression) $3, GetLocation ($1));
4164 lbag.AddLocation ($$, GetLocation ($2));
4169 : CHECKED open_parens_any expression CLOSE_PARENS
4171 $$ = new CheckedExpr ((Expression) $3, GetLocation ($1));
4172 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4176 Error_SyntaxError (yyToken);
4178 $$ = new CheckedExpr (null, GetLocation ($1));
4182 unchecked_expression
4183 : UNCHECKED open_parens_any expression CLOSE_PARENS
4185 $$ = new UnCheckedExpr ((Expression) $3, GetLocation ($1));
4186 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4190 Error_SyntaxError (yyToken);
4192 $$ = new UnCheckedExpr (null, GetLocation ($1));
4196 pointer_member_access
4197 : primary_expression OP_PTR IDENTIFIER opt_type_argument_list
4199 var lt = (LocatedToken) $3;
4200 $$ = new MemberAccess (new Indirection ((Expression) $1, GetLocation ($2)), lt.Value, (TypeArguments) $4, lt.Location);
4204 anonymous_method_expression
4205 : DELEGATE opt_anonymous_method_signature
4207 start_anonymous (false, (ParametersCompiled) $2, false, GetLocation ($1));
4211 $$ = end_anonymous ((ParametersBlock) $4);
4213 | ASYNC DELEGATE opt_anonymous_method_signature
4215 start_anonymous (false, (ParametersCompiled) $3, true, GetLocation ($1));
4219 $$ = end_anonymous ((ParametersBlock) $5);
4223 opt_anonymous_method_signature
4226 $$ = ParametersCompiled.Undefined;
4228 | anonymous_method_signature
4231 anonymous_method_signature
4234 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
4236 opt_formal_parameter_list CLOSE_PARENS
4238 valid_param_mod = 0;
4243 default_value_expression
4244 : DEFAULT open_parens_any type CLOSE_PARENS
4246 if (lang_version < LanguageVersion.ISO_2)
4247 FeatureIsNotAvailable (GetLocation ($1), "default value expression");
4249 $$ = new DefaultValueExpression ((Expression) $3, GetLocation ($1));
4250 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4255 : primary_expression
4256 | BANG prefixed_unary_expression
4258 $$ = new Unary (Unary.Operator.LogicalNot, (Expression) $2, GetLocation ($1));
4260 | TILDE prefixed_unary_expression
4262 $$ = new Unary (Unary.Operator.OnesComplement, (Expression) $2, GetLocation ($1));
4264 | OPEN_PARENS_CAST type CLOSE_PARENS prefixed_unary_expression
4266 $$ = new Cast ((FullNamedExpression) $2, (Expression) $4, GetLocation ($1));
4267 lbag.AddLocation ($$, GetLocation ($3));
4269 | AWAIT prefixed_unary_expression
4272 if (current_anonymous_method is LambdaExpression) {
4273 report.Error (4034, GetLocation ($1),
4274 "The `await' operator can only be used when its containing lambda expression is marked with the `async' modifier");
4275 } else if (current_anonymous_method != null) {
4276 report.Error (4035, GetLocation ($1),
4277 "The `await' operator can only be used when its containing anonymous method is marked with the `async' modifier");
4278 } else if (interactive_async != null) {
4279 current_block.Explicit.RegisterAsyncAwait ();
4280 interactive_async = true;
4282 report.Error (4033, GetLocation ($1),
4283 "The `await' operator can only be used when its containing method is marked with the `async' modifier");
4286 current_block.Explicit.RegisterAsyncAwait ();
4289 $$ = new Await ((Expression) $2, GetLocation ($1));
4291 | THROW_EXPR prefixed_unary_expression
4293 if (lang_version < LanguageVersion.V_7)
4294 FeatureIsNotAvailable (lexer.Location, "throw expression");
4296 $$ = new ThrowExpression ((Expression) $2, GetLocation ($1));
4300 Error_SyntaxError (yyToken);
4302 $$ = new Unary (Unary.Operator.LogicalNot, null, GetLocation ($1));
4306 Error_SyntaxError (yyToken);
4308 $$ = new Unary (Unary.Operator.OnesComplement, null, GetLocation ($1));
4310 | OPEN_PARENS_CAST type CLOSE_PARENS error
4312 Error_SyntaxError (yyToken);
4314 $$ = new Cast ((FullNamedExpression) $2, null, GetLocation ($1));
4315 lbag.AddLocation ($$, GetLocation ($3));
4319 Error_SyntaxError (yyToken);
4321 $$ = new Await (null, GetLocation ($1));
4326 // The idea to split this out is from Rhys' grammar
4327 // to solve the problem with casts.
4329 prefixed_unary_expression
4331 | PLUS prefixed_unary_expression
4333 $$ = new Unary (Unary.Operator.UnaryPlus, (Expression) $2, GetLocation ($1));
4335 | MINUS prefixed_unary_expression
4337 $$ = new Unary (Unary.Operator.UnaryNegation, (Expression) $2, GetLocation ($1));
4339 | OP_INC prefixed_unary_expression
4341 $$ = new UnaryMutator (UnaryMutator.Mode.PreIncrement, (Expression) $2, GetLocation ($1));
4343 | OP_DEC prefixed_unary_expression
4345 $$ = new UnaryMutator (UnaryMutator.Mode.PreDecrement, (Expression) $2, GetLocation ($1));
4347 | STAR prefixed_unary_expression
4349 $$ = new Indirection ((Expression) $2, GetLocation ($1));
4351 | BITWISE_AND prefixed_unary_expression
4353 $$ = new Unary (Unary.Operator.AddressOf, (Expression) $2, GetLocation ($1));
4357 Error_SyntaxError (yyToken);
4359 $$ = new Unary (Unary.Operator.UnaryPlus, null, GetLocation ($1));
4363 Error_SyntaxError (yyToken);
4365 $$ = new Unary (Unary.Operator.UnaryNegation, null, GetLocation ($1));
4369 Error_SyntaxError (yyToken);
4371 $$ = new UnaryMutator (UnaryMutator.Mode.PreIncrement, null, GetLocation ($1));
4375 Error_SyntaxError (yyToken);
4377 $$ = new UnaryMutator (UnaryMutator.Mode.PreDecrement, null, GetLocation ($1));
4381 Error_SyntaxError (yyToken);
4383 $$ = new Indirection (null, GetLocation ($1));
4387 Error_SyntaxError (yyToken);
4389 $$ = new Unary (Unary.Operator.AddressOf, null, GetLocation ($1));
4393 multiplicative_expression
4394 : prefixed_unary_expression
4395 | multiplicative_expression STAR prefixed_unary_expression
4397 $$ = new Binary (Binary.Operator.Multiply, (Expression) $1, (Expression) $3);
4398 lbag.AddLocation ($$, GetLocation ($2));
4400 | multiplicative_expression DIV prefixed_unary_expression
4402 $$ = new Binary (Binary.Operator.Division, (Expression) $1, (Expression) $3);
4403 lbag.AddLocation ($$, GetLocation ($2));
4405 | multiplicative_expression PERCENT prefixed_unary_expression
4407 $$ = new Binary (Binary.Operator.Modulus, (Expression) $1, (Expression) $3);
4408 lbag.AddLocation ($$, GetLocation ($2));
4410 | multiplicative_expression STAR error
4412 Error_SyntaxError (yyToken);
4414 $$ = new Binary (Binary.Operator.Multiply, (Expression) $1, null);
4415 lbag.AddLocation ($$, GetLocation ($2));
4417 | multiplicative_expression DIV error
4419 Error_SyntaxError (yyToken);
4421 $$ = new Binary (Binary.Operator.Division, (Expression) $1, null);
4422 lbag.AddLocation ($$, GetLocation ($2));
4424 | multiplicative_expression PERCENT error
4426 Error_SyntaxError (yyToken);
4428 $$ = new Binary (Binary.Operator.Modulus, (Expression) $1, null);
4429 lbag.AddLocation ($$, GetLocation ($2));
4434 : multiplicative_expression
4435 | additive_expression PLUS multiplicative_expression
4437 $$ = new Binary (Binary.Operator.Addition, (Expression) $1, (Expression) $3);
4438 lbag.AddLocation ($$, GetLocation ($2));
4440 | additive_expression MINUS multiplicative_expression
4442 $$ = new Binary (Binary.Operator.Subtraction, (Expression) $1, (Expression) $3);
4443 lbag.AddLocation ($$, GetLocation ($2));
4445 | additive_expression PLUS error
4447 Error_SyntaxError (yyToken);
4449 $$ = new Binary (Binary.Operator.Addition, (Expression) $1, null);
4450 lbag.AddLocation ($$, GetLocation ($2));
4452 | additive_expression MINUS error
4454 Error_SyntaxError (yyToken);
4456 $$ = new Binary (Binary.Operator.Subtraction, (Expression) $1, null);
4457 lbag.AddLocation ($$, GetLocation ($2));
4459 | additive_expression AS type
4461 $$ = new As ((Expression) $1, (Expression) $3, GetLocation ($2));
4463 | additive_expression IS pattern_type_expr opt_identifier
4465 var is_expr = new Is ((Expression) $1, (Expression) $3, GetLocation ($2));
4467 if (lang_version != LanguageVersion.Experimental)
4468 FeatureIsNotAvailable (GetLocation ($4), "type pattern matching");
4470 var lt = (LocatedToken) $4;
4471 is_expr.Variable = new LocalVariable (current_block, lt.Value, lt.Location);
4472 current_block.AddLocalName (is_expr.Variable);
4477 | additive_expression IS pattern_expr
4479 var is_expr = new Is ((Expression) $1, (Expression) $3, GetLocation ($2));
4480 if (lang_version != LanguageVersion.Experimental)
4481 FeatureIsNotAvailable (GetLocation ($2), "pattern matching");
4485 | additive_expression AS error
4487 Error_SyntaxError (yyToken);
4489 $$ = new As ((Expression) $1, null, GetLocation ($2));
4491 | additive_expression IS error
4493 Error_SyntaxError (yyToken);
4495 $$ = new Is ((Expression) $1, null, GetLocation ($2));
4499 var lt = (LocatedToken) $1;
4500 $$ = new Is (new SimpleName (lt.Value, lt.Location), (Expression) $3, GetLocation ($2));
4504 var lt = (LocatedToken) $1;
4505 $$ = new As (new SimpleName (lt.Value, lt.Location), (Expression) $3, GetLocation ($2));
4515 | PLUS prefixed_unary_expression
4517 $$ = new Unary (Unary.Operator.UnaryPlus, (Expression) $2, GetLocation ($1));
4519 | MINUS prefixed_unary_expression
4521 $$ = new Unary (Unary.Operator.UnaryNegation, (Expression) $2, GetLocation ($1));
4524 | default_value_expression
4525 | OPEN_PARENS_CAST type CLOSE_PARENS prefixed_unary_expression
4527 $$ = new Cast ((FullNamedExpression) $2, (Expression) $4, GetLocation ($1));
4528 lbag.AddLocation ($$, GetLocation ($3));
4532 $$ = new WildcardPattern (GetLocation ($1));
4534 | pattern_expr_invocation
4538 pattern_expr_invocation
4539 : type_name_expression OPEN_PARENS opt_pattern_list CLOSE_PARENS
4541 $$ = new RecursivePattern ((ATypeNameExpression) $1, (Arguments) $3, GetLocation ($2));
4546 : type_name_expression OPEN_BRACE pattern_property_list CLOSE_BRACE
4548 $$ = new PropertyPattern ((ATypeNameExpression) $1, (List<PropertyPatternMember>) $3, GetLocation ($2));
4552 pattern_property_list
4553 : pattern_property_entry
4555 var list = new List<PropertyPatternMember> ();
4556 list.Add ((PropertyPatternMember) $1);
4559 | pattern_property_list COMMA pattern_property_entry
4561 var list = (List<PropertyPatternMember>) $1;
4562 list.Add ((PropertyPatternMember) $3);
4567 pattern_property_entry
4568 : identifier_inside_body IS pattern
4570 var lt = (LocatedToken) $1;
4571 $$ = new PropertyPatternMember (lt.Value, (Expression) $3, lt.Location);
4577 | pattern_type_expr opt_identifier
4580 var lt = (LocatedToken) $2;
4581 var variable = new LocalVariable (current_block, lt.Value, lt.Location);
4582 current_block.AddLocalName (variable);
4590 $$ = new Arguments (0);
4598 Arguments args = new Arguments (4);
4599 args.Add ((Argument) $1);
4602 | pattern_list COMMA pattern_argument
4604 Arguments args = (Arguments) $1;
4605 if (args [args.Count - 1] is NamedArgument && !($3 is NamedArgument))
4606 Error_NamedArgumentExpected ((NamedArgument) args [args.Count - 1]);
4608 args.Add ((Argument) $3);
4616 $$ = new Argument ((Expression) $1);
4618 | IDENTIFIER COLON pattern
4620 var lt = (LocatedToken) $1;
4621 $$ = new NamedArgument (lt.Value, lt.Location, (Expression) $3);
4626 : additive_expression
4627 | shift_expression OP_SHIFT_LEFT additive_expression
4629 $$ = new Binary (Binary.Operator.LeftShift, (Expression) $1, (Expression) $3);
4630 lbag.AddLocation ($$, GetLocation ($2));
4632 | shift_expression OP_SHIFT_RIGHT additive_expression
4634 $$ = new Binary (Binary.Operator.RightShift, (Expression) $1, (Expression) $3);
4635 lbag.AddLocation ($$, GetLocation ($2));
4637 | shift_expression OP_SHIFT_LEFT error
4639 Error_SyntaxError (yyToken);
4641 $$ = new Binary (Binary.Operator.LeftShift, (Expression) $1, null);
4642 lbag.AddLocation ($$, GetLocation ($2));
4644 | shift_expression OP_SHIFT_RIGHT error
4646 Error_SyntaxError (yyToken);
4648 $$ = new Binary (Binary.Operator.RightShift, (Expression) $1, null);
4649 lbag.AddLocation ($$, GetLocation ($2));
4653 relational_expression
4655 | relational_expression OP_LT shift_expression
4657 $$ = new Binary (Binary.Operator.LessThan, (Expression) $1, (Expression) $3);
4658 lbag.AddLocation ($$, GetLocation ($2));
4660 | relational_expression OP_GT shift_expression
4662 $$ = new Binary (Binary.Operator.GreaterThan, (Expression) $1, (Expression) $3);
4663 lbag.AddLocation ($$, GetLocation ($2));
4665 | relational_expression OP_LE shift_expression
4667 $$ = new Binary (Binary.Operator.LessThanOrEqual, (Expression) $1, (Expression) $3);
4668 lbag.AddLocation ($$, GetLocation ($2));
4670 | relational_expression OP_GE shift_expression
4672 $$ = new Binary (Binary.Operator.GreaterThanOrEqual, (Expression) $1, (Expression) $3);
4673 lbag.AddLocation ($$, GetLocation ($2));
4675 | relational_expression OP_LT error
4677 Error_SyntaxError (yyToken);
4679 $$ = new Binary (Binary.Operator.LessThan, (Expression) $1, null);
4680 lbag.AddLocation ($$, GetLocation ($2));
4682 | relational_expression OP_GT error
4684 Error_SyntaxError (yyToken);
4686 $$ = new Binary (Binary.Operator.GreaterThan, (Expression) $1, null);
4687 lbag.AddLocation ($$, GetLocation ($2));
4689 | relational_expression OP_LE error
4691 Error_SyntaxError (yyToken);
4693 $$ = new Binary (Binary.Operator.LessThanOrEqual, (Expression) $1, null);
4694 lbag.AddLocation ($$, GetLocation ($2));
4696 | relational_expression OP_GE error
4698 Error_SyntaxError (yyToken);
4700 $$ = new Binary (Binary.Operator.GreaterThanOrEqual, (Expression) $1, null);
4701 lbag.AddLocation ($$, GetLocation ($2));
4706 : relational_expression
4707 | equality_expression OP_EQ relational_expression
4709 $$ = new Binary (Binary.Operator.Equality, (Expression) $1, (Expression) $3);
4710 lbag.AddLocation ($$, GetLocation ($2));
4712 | equality_expression OP_NE relational_expression
4714 $$ = new Binary (Binary.Operator.Inequality, (Expression) $1, (Expression) $3);
4715 lbag.AddLocation ($$, GetLocation ($2));
4717 | equality_expression OP_EQ error
4719 Error_SyntaxError (yyToken);
4721 $$ = new Binary (Binary.Operator.Equality, (Expression) $1, null);
4722 lbag.AddLocation ($$, GetLocation ($2));
4724 | equality_expression OP_NE error
4726 Error_SyntaxError (yyToken);
4728 $$ = new Binary (Binary.Operator.Inequality, (Expression) $1, null);
4729 lbag.AddLocation ($$, GetLocation ($2));
4734 : equality_expression
4735 | and_expression BITWISE_AND equality_expression
4737 $$ = new Binary (Binary.Operator.BitwiseAnd, (Expression) $1, (Expression) $3);
4738 lbag.AddLocation ($$, GetLocation ($2));
4740 | and_expression BITWISE_AND error
4742 Error_SyntaxError (yyToken);
4744 $$ = new Binary (Binary.Operator.BitwiseAnd, (Expression) $1, null);
4745 lbag.AddLocation ($$, GetLocation ($2));
4749 exclusive_or_expression
4751 | exclusive_or_expression CARRET and_expression
4753 $$ = new Binary (Binary.Operator.ExclusiveOr, (Expression) $1, (Expression) $3);
4754 lbag.AddLocation ($$, GetLocation ($2));
4756 | exclusive_or_expression CARRET error
4758 Error_SyntaxError (yyToken);
4760 $$ = new Binary (Binary.Operator.ExclusiveOr, (Expression) $1, null);
4761 lbag.AddLocation ($$, GetLocation ($2));
4765 inclusive_or_expression
4766 : exclusive_or_expression
4767 | inclusive_or_expression BITWISE_OR exclusive_or_expression
4769 $$ = new Binary (Binary.Operator.BitwiseOr, (Expression) $1, (Expression) $3);
4770 lbag.AddLocation ($$, GetLocation ($2));
4772 | inclusive_or_expression BITWISE_OR error
4774 Error_SyntaxError (yyToken);
4776 $$ = new Binary (Binary.Operator.BitwiseOr, (Expression) $1, null);
4777 lbag.AddLocation ($$, GetLocation ($2));
4781 conditional_and_expression
4782 : inclusive_or_expression
4783 | conditional_and_expression OP_AND inclusive_or_expression
4785 $$ = new Binary (Binary.Operator.LogicalAnd, (Expression) $1, (Expression) $3);
4786 lbag.AddLocation ($$, GetLocation ($2));
4788 | conditional_and_expression OP_AND error
4790 Error_SyntaxError (yyToken);
4792 $$ = new Binary (Binary.Operator.LogicalAnd, (Expression) $1, null);
4793 lbag.AddLocation ($$, GetLocation ($2));
4797 conditional_or_expression
4798 : conditional_and_expression
4799 | conditional_or_expression OP_OR conditional_and_expression
4801 $$ = new Binary (Binary.Operator.LogicalOr, (Expression) $1, (Expression) $3);
4802 lbag.AddLocation ($$, GetLocation ($2));
4804 | conditional_or_expression OP_OR error
4806 Error_SyntaxError (yyToken);
4808 $$ = new Binary (Binary.Operator.LogicalOr, (Expression) $1, null);
4809 lbag.AddLocation ($$, GetLocation ($2));
4813 null_coalescing_expression
4814 : conditional_or_expression
4815 | conditional_or_expression OP_COALESCING null_coalescing_expression
4817 if (lang_version < LanguageVersion.ISO_2)
4818 FeatureIsNotAvailable (GetLocation ($2), "null coalescing operator");
4820 $$ = new Nullable.NullCoalescingOperator ((Expression) $1, (Expression) $3);
4821 lbag.AddLocation ($$, GetLocation ($2));
4825 conditional_expression
4826 : null_coalescing_expression
4827 | null_coalescing_expression INTERR expression COLON expression
4829 $$ = new Conditional (new BooleanExpression ((Expression) $1), (Expression) $3, (Expression) $5, GetLocation ($2));
4830 lbag.AddLocation ($$, GetLocation ($4));
4832 | null_coalescing_expression INTERR expression COLON THROW prefixed_unary_expression
4834 if (lang_version < LanguageVersion.V_7)
4835 FeatureIsNotAvailable (lexer.Location, "throw expression");
4837 var expr = new ThrowExpression ((Expression) $6, GetLocation ($5));
4838 $$ = new Conditional (new BooleanExpression ((Expression) $1), (Expression) $3, expr, GetLocation ($2));
4839 lbag.AddLocation ($$, GetLocation ($4));
4841 | null_coalescing_expression INTERR expression error
4843 Error_SyntaxError (yyToken);
4845 $$ = new Conditional (new BooleanExpression ((Expression) $1), (Expression) $3, null, GetLocation ($2));
4847 | null_coalescing_expression INTERR expression COLON error
4849 Error_SyntaxError (yyToken);
4851 $$ = new Conditional (new BooleanExpression ((Expression) $1), (Expression) $3, null, GetLocation ($2));
4852 lbag.AddLocation ($$, GetLocation ($4));
4854 | null_coalescing_expression INTERR expression COLON CLOSE_BRACE
4856 Error_SyntaxError (Token.CLOSE_BRACE);
4858 $$ = new Conditional (new BooleanExpression ((Expression) $1), (Expression) $3, null, GetLocation ($2));
4859 lbag.AddLocation ($$, GetLocation ($4));
4860 lexer.putback ('}');
4864 assignment_expression
4865 : prefixed_unary_expression ASSIGN expression
4867 $$ = new SimpleAssign ((Expression) $1, (Expression) $3);
4868 lbag.AddLocation ($$, GetLocation ($2));
4870 | prefixed_unary_expression OP_MULT_ASSIGN expression
4872 $$ = new CompoundAssign (Binary.Operator.Multiply, (Expression) $1, (Expression) $3);
4873 lbag.AddLocation ($$, GetLocation ($2));
4875 | prefixed_unary_expression OP_DIV_ASSIGN expression
4877 $$ = new CompoundAssign (Binary.Operator.Division, (Expression) $1, (Expression) $3);
4878 lbag.AddLocation ($$, GetLocation ($2));
4880 | prefixed_unary_expression OP_MOD_ASSIGN expression
4882 $$ = new CompoundAssign (Binary.Operator.Modulus, (Expression) $1, (Expression) $3);
4883 lbag.AddLocation ($$, GetLocation ($2));
4885 | prefixed_unary_expression OP_ADD_ASSIGN expression
4887 $$ = new CompoundAssign (Binary.Operator.Addition, (Expression) $1, (Expression) $3);
4888 lbag.AddLocation ($$, GetLocation ($2));
4890 | prefixed_unary_expression OP_SUB_ASSIGN expression
4892 $$ = new CompoundAssign (Binary.Operator.Subtraction, (Expression) $1, (Expression) $3);
4893 lbag.AddLocation ($$, GetLocation ($2));
4895 | prefixed_unary_expression OP_SHIFT_LEFT_ASSIGN expression
4897 $$ = new CompoundAssign (Binary.Operator.LeftShift, (Expression) $1, (Expression) $3);
4898 lbag.AddLocation ($$, GetLocation ($2));
4900 | prefixed_unary_expression OP_SHIFT_RIGHT_ASSIGN expression
4902 $$ = new CompoundAssign (Binary.Operator.RightShift, (Expression) $1, (Expression) $3);
4903 lbag.AddLocation ($$, GetLocation ($2));
4905 | prefixed_unary_expression OP_AND_ASSIGN expression
4907 $$ = new CompoundAssign (Binary.Operator.BitwiseAnd, (Expression) $1, (Expression) $3);
4908 lbag.AddLocation ($$, GetLocation ($2));
4910 | prefixed_unary_expression OP_OR_ASSIGN expression
4912 $$ = new CompoundAssign (Binary.Operator.BitwiseOr, (Expression) $1, (Expression) $3);
4913 lbag.AddLocation ($$, GetLocation ($2));
4915 | prefixed_unary_expression OP_XOR_ASSIGN expression
4917 $$ = new CompoundAssign (Binary.Operator.ExclusiveOr, (Expression) $1, (Expression) $3);
4918 lbag.AddLocation ($$, GetLocation ($2));
4922 lambda_parameter_list
4925 var pars = new List<Parameter> (4);
4926 pars.Add ((Parameter) $1);
4930 | lambda_parameter_list COMMA lambda_parameter
4932 var pars = (List<Parameter>) $1;
4933 Parameter p = (Parameter)$3;
4934 if (pars[0].GetType () != p.GetType ()) {
4935 report.Error (748, p.Location, "All lambda parameters must be typed either explicitly or implicitly");
4944 : parameter_modifier parameter_type identifier_inside_body
4946 var lt = (LocatedToken) $3;
4948 $$ = new Parameter ((FullNamedExpression) $2, lt.Value, (Parameter.Modifier) $1, null, lt.Location);
4950 | parameter_type identifier_inside_body
4952 var lt = (LocatedToken) $2;
4954 $$ = new Parameter ((FullNamedExpression) $1, lt.Value, Parameter.Modifier.NONE, null, lt.Location);
4958 var lt = (LocatedToken) $1;
4959 $$ = new ImplicitLambdaParameter (lt.Value, lt.Location);
4963 var lt = (LocatedToken) Error_AwaitAsIdentifier ($1);
4964 $$ = new ImplicitLambdaParameter (lt.Value, lt.Location);
4968 opt_lambda_parameter_list
4969 : /* empty */ { $$ = ParametersCompiled.EmptyReadOnlyParameters; }
4970 | lambda_parameter_list {
4971 var pars_list = (List<Parameter>) $1;
4972 $$ = new ParametersCompiled (pars_list.ToArray ());
4976 lambda_expression_body
4978 start_block (Location.Null);
4980 expression // All expressions must handle error or current block won't be restored and breaking ast completely
4982 Block b = end_block (Location.Null);
4983 b.IsCompilerGenerated = true;
4984 b.AddStatement (new ContextualReturn ((Expression) $2));
4990 // Handles only cases like foo = x.FirstOrDefault (l => );
4991 // where we must restore current_variable
4992 Block b = end_block (Location.Null);
4993 b.IsCompilerGenerated = true;
4995 Error_SyntaxError (yyToken);
5004 Error_SyntaxError (yyToken);
5012 var lt = (LocatedToken) $1;
5013 Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
5014 start_anonymous (true, new ParametersCompiled (p), false, lt.Location);
5016 lambda_expression_body
5018 $$ = end_anonymous ((ParametersBlock) $4);
5019 lbag.AddLocation ($$, GetLocation ($2));
5023 var lt = (LocatedToken) Error_AwaitAsIdentifier ($1);
5024 Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
5025 start_anonymous (true, new ParametersCompiled (p), false, lt.Location);
5027 lambda_expression_body
5029 $$ = end_anonymous ((ParametersBlock) $4);
5030 lbag.AddLocation ($$, GetLocation ($2));
5032 | ASYNC identifier_inside_body ARROW
5034 var lt = (LocatedToken) $2;
5035 Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
5036 start_anonymous (true, new ParametersCompiled (p), true, lt.Location);
5038 lambda_expression_body
5040 $$ = end_anonymous ((ParametersBlock) $5);
5041 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
5043 | OPEN_PARENS_LAMBDA
5045 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
5047 opt_lambda_parameter_list CLOSE_PARENS ARROW
5049 valid_param_mod = 0;
5050 start_anonymous (true, (ParametersCompiled) $3, false, GetLocation ($1));
5052 lambda_expression_body
5054 $$ = end_anonymous ((ParametersBlock) $7);
5055 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($4), GetLocation ($5));
5057 | ASYNC OPEN_PARENS_LAMBDA
5059 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
5061 opt_lambda_parameter_list CLOSE_PARENS ARROW
5063 valid_param_mod = 0;
5064 start_anonymous (true, (ParametersCompiled) $4, true, GetLocation ($1));
5066 lambda_expression_body
5068 $$ = end_anonymous ((ParametersBlock) $8);
5069 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($2), GetLocation ($5), GetLocation ($6));
5074 : assignment_expression
5075 | non_assignment_expression
5078 non_assignment_expression
5079 : conditional_expression
5084 $$ = new ArglistAccess (GetLocation ($1));
5088 undocumented_expressions
5089 : REFVALUE OPEN_PARENS non_assignment_expression COMMA type CLOSE_PARENS
5091 $$ = new RefValueExpr ((Expression) $3, (FullNamedExpression) $5, GetLocation ($1));
5092 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4), GetLocation ($6));
5094 | REFTYPE open_parens_any expression CLOSE_PARENS
5096 $$ = new RefTypeExpr ((Expression) $3, GetLocation ($1));
5097 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
5099 | MAKEREF open_parens_any expression CLOSE_PARENS
5101 $$ = new MakeRefExpr ((Expression) $3, GetLocation ($1));
5102 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
5113 $$ = new BooleanExpression ((Expression) $1);
5117 opt_primary_parameters
5122 | primary_parameters
5126 : OPEN_PARENS opt_formal_parameter_list CLOSE_PARENS
5130 // Cannot use opt_formal_parameter_list because it can be shared instance for empty parameters
5131 lbag.AppendToMember (current_container, GetLocation ($1), GetLocation ($3));
5133 if (lang_version != LanguageVersion.Experimental)
5134 FeatureIsNotAvailable (GetLocation ($1), "primary constructor");
5138 opt_primary_parameters_with_class_base
5147 | primary_parameters
5151 | primary_parameters class_base
5155 | primary_parameters class_base OPEN_PARENS
5157 ++lexer.parsing_block;
5158 current_type.PrimaryConstructorBaseArgumentsStart = GetLocation ($3);
5160 opt_argument_list CLOSE_PARENS
5162 lbag.AppendToMember (current_container, GetLocation ($6));
5163 current_type.PrimaryConstructorBaseArguments = (Arguments) $5;
5164 --lexer.parsing_block;
5180 type_declaration_name
5182 lexer.ConstraintsParsing = true;
5184 Class c = new Class (current_container, (MemberName) $6, (Modifiers) $2, (Attributes) $1);
5185 if (((c.ModFlags & Modifiers.STATIC) != 0) && lang_version == LanguageVersion.ISO_1) {
5186 FeatureIsNotAvailable (c.Location, "static classes");
5189 push_current_container (c, $3);
5190 valid_param_mod = ParameterModifierType.PrimaryConstructor;
5192 opt_primary_parameters_with_class_base
5193 opt_type_parameter_constraints_clauses
5195 valid_param_mod = 0;
5196 lexer.ConstraintsParsing = false;
5199 current_type.PrimaryConstructorParameters = (ParametersCompiled) $8;
5202 current_container.SetConstraints ((List<Constraints>) $9);
5203 lbag.AddMember (current_container, mod_locations, GetLocation ($4));
5206 current_container.PartialContainer.DocComment = Lexer.consume_doc_comment ();
5207 Lexer.doc_state = XmlCommentState.Allowed;
5210 lexer.parsing_modifiers = true;
5212 OPEN_BRACE opt_class_member_declarations CLOSE_BRACE
5214 --lexer.parsing_declaration;
5216 Lexer.doc_state = XmlCommentState.Allowed;
5221 lbag.AppendToMember (current_container, GetLocation ($11), GetLocation ($13));
5223 lbag.AppendToMember (current_container, GetLocation ($11), GetLocation ($13), GetLocation ($15));
5225 $$ = pop_current_class ();
5233 { $$ = $1; } // location
5239 mod_locations = null;
5241 lexer.parsing_modifiers = false;
5245 lexer.parsing_modifiers = false;
5251 | modifiers modifier
5253 var m1 = (Modifiers) $1;
5254 var m2 = (Modifiers) $2;
5256 if ((m1 & m2) != 0) {
5257 report.Error (1004, lexer.Location - ModifiersExtensions.Name (m2).Length,
5258 "Duplicate `{0}' modifier", ModifiersExtensions.Name (m2));
5259 } else if ((m2 & Modifiers.AccessibilityMask) != 0 && (m1 & Modifiers.AccessibilityMask) != 0 &&
5260 ((m2 | m1 & Modifiers.AccessibilityMask) != (Modifiers.PROTECTED | Modifiers.INTERNAL))) {
5261 report.Error (107, lexer.Location - ModifiersExtensions.Name (m2).Length,
5262 "More than one protection modifier specified");
5273 StoreModifierLocation ($$, GetLocation ($1));
5275 if (current_container.Kind == MemberKind.Namespace)
5276 report.Error (1530, GetLocation ($1), "Keyword `new' is not allowed on namespace elements");
5280 $$ = Modifiers.PUBLIC;
5281 StoreModifierLocation ($$, GetLocation ($1));
5285 $$ = Modifiers.PROTECTED;
5286 StoreModifierLocation ($$, GetLocation ($1));
5290 $$ = Modifiers.INTERNAL;
5291 StoreModifierLocation ($$, GetLocation ($1));
5295 $$ = Modifiers.PRIVATE;
5296 StoreModifierLocation ($$, GetLocation ($1));
5300 $$ = Modifiers.ABSTRACT;
5301 StoreModifierLocation ($$, GetLocation ($1));
5305 $$ = Modifiers.SEALED;
5306 StoreModifierLocation ($$, GetLocation ($1));
5310 $$ = Modifiers.STATIC;
5311 StoreModifierLocation ($$, GetLocation ($1));
5315 $$ = Modifiers.READONLY;
5316 StoreModifierLocation ($$, GetLocation ($1));
5320 $$ = Modifiers.VIRTUAL;
5321 StoreModifierLocation ($$, GetLocation ($1));
5325 $$ = Modifiers.OVERRIDE;
5326 StoreModifierLocation ($$, GetLocation ($1));
5330 $$ = Modifiers.EXTERN;
5331 StoreModifierLocation ($$, GetLocation ($1));
5335 $$ = Modifiers.VOLATILE;
5336 StoreModifierLocation ($$, GetLocation ($1));
5340 $$ = Modifiers.UNSAFE;
5341 StoreModifierLocation ($$, GetLocation ($1));
5342 if (!settings.Unsafe)
5343 Error_UnsafeCodeNotAllowed (GetLocation ($1));
5347 $$ = Modifiers.ASYNC;
5348 StoreModifierLocation ($$, GetLocation ($1));
5360 current_type.SetBaseTypes ((List<FullNamedExpression>) $2);
5362 | COLON type_list error
5364 Error_SyntaxError (yyToken);
5366 current_type.SetBaseTypes ((List<FullNamedExpression>) $2);
5370 opt_type_parameter_constraints_clauses
5372 | type_parameter_constraints_clauses
5378 type_parameter_constraints_clauses
5379 : type_parameter_constraints_clause
5381 var constraints = new List<Constraints> (1);
5382 constraints.Add ((Constraints) $1);
5385 | type_parameter_constraints_clauses type_parameter_constraints_clause
5387 var constraints = (List<Constraints>) $1;
5388 Constraints new_constraint = (Constraints)$2;
5390 foreach (Constraints c in constraints) {
5391 if (new_constraint.TypeParameter.Value == c.TypeParameter.Value) {
5392 report.Error (409, new_constraint.Location,
5393 "A constraint clause has already been specified for type parameter `{0}'",
5394 new_constraint.TypeParameter.Value);
5398 constraints.Add (new_constraint);
5403 type_parameter_constraints_clause
5404 : WHERE IDENTIFIER COLON type_parameter_constraints
5406 var lt = (LocatedToken) $2;
5407 $$ = new Constraints (new SimpleMemberName (lt.Value, lt.Location), (List<FullNamedExpression>) $4, GetLocation ($1));
5408 lbag.AddLocation ($$, GetLocation ($3));
5410 | WHERE IDENTIFIER error
5412 Error_SyntaxError (yyToken);
5414 var lt = (LocatedToken) $2;
5415 $$ = new Constraints (new SimpleMemberName (lt.Value, lt.Location), null, GetLocation ($1));
5419 type_parameter_constraints
5420 : type_parameter_constraint
5422 var constraints = new List<FullNamedExpression> (1);
5423 constraints.Add ((FullNamedExpression) $1);
5426 | type_parameter_constraints COMMA type_parameter_constraint
5428 var constraints = (List<FullNamedExpression>) $1;
5429 var prev = constraints [constraints.Count - 1] as SpecialContraintExpr;
5430 if (prev != null && (prev.Constraint & SpecialConstraint.Constructor) != 0) {
5431 report.Error (401, GetLocation ($2), "The `new()' constraint must be the last constraint specified");
5434 prev = $3 as SpecialContraintExpr;
5436 if ((prev.Constraint & (SpecialConstraint.Class | SpecialConstraint.Struct)) != 0) {
5437 report.Error (449, prev.Location, "The `class' or `struct' constraint must be the first constraint specified");
5439 prev = constraints [0] as SpecialContraintExpr;
5440 if (prev != null && (prev.Constraint & SpecialConstraint.Struct) != 0) {
5441 report.Error (451, GetLocation ($3), "The `new()' constraint cannot be used with the `struct' constraint");
5446 constraints.Add ((FullNamedExpression) $3);
5451 type_parameter_constraint
5454 if ($1 is ComposedCast)
5455 report.Error (706, GetLocation ($1), "Invalid constraint type `{0}'", ((ComposedCast)$1).GetSignatureForError ());
5459 | NEW OPEN_PARENS CLOSE_PARENS
5461 $$ = new SpecialContraintExpr (SpecialConstraint.Constructor, GetLocation ($1));
5462 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($3));
5466 $$ = new SpecialContraintExpr (SpecialConstraint.Class, GetLocation ($1));
5470 $$ = new SpecialContraintExpr (SpecialConstraint.Struct, GetLocation ($1));
5474 opt_type_parameter_variance
5479 | type_parameter_variance
5481 if (lang_version <= LanguageVersion.V_3)
5482 FeatureIsNotAvailable (lexer.Location, "generic type variance");
5488 type_parameter_variance
5491 $$ = new VarianceDecl (Variance.Covariant, GetLocation ($1));
5495 $$ = new VarianceDecl (Variance.Contravariant, GetLocation ($1));
5504 // A block is "contained" on the following places:
5506 // property_declaration as part of the accessor body (get/set)
5507 // operator_declaration
5508 // constructor_declaration
5509 // destructor_declaration
5510 // event_declaration as part of add_accessor_declaration or remove_accessor_declaration
5515 ++lexer.parsing_block;
5516 start_block (GetLocation ($1));
5518 opt_statement_list block_end
5527 --lexer.parsing_block;
5528 $$ = end_block (GetLocation ($1));
5530 | COMPLETE_COMPLETION
5532 --lexer.parsing_block;
5533 $$ = end_block (lexer.Location);
5541 ++lexer.parsing_block;
5542 current_block.StartLocation = GetLocation ($1);
5544 opt_statement_list CLOSE_BRACE
5546 --lexer.parsing_block;
5547 $$ = end_block (GetLocation ($4));
5558 | statement_list statement
5562 : block_variable_declaration
5564 current_block.AddStatement ((Statement) $1);
5566 | valid_declaration_statement
5568 current_block.AddStatement ((Statement) $1);
5573 Error_SyntaxError (yyToken);
5579 // The interactive_statement and its derivatives are only
5580 // used to provide a special version of `expression_statement'
5581 // that has a side effect of assigning the expression to
5584 interactive_statement_list
5585 : interactive_statement
5586 | interactive_statement_list interactive_statement
5589 interactive_statement
5590 : block_variable_declaration
5592 current_block.AddStatement ((Statement) $1);
5594 | interactive_valid_declaration_statement
5596 current_block.AddStatement ((Statement) $1);
5601 valid_declaration_statement
5604 | expression_statement
5605 | selection_statement
5606 | iteration_statement
5610 | unchecked_statement
5617 interactive_valid_declaration_statement
5620 | interactive_expression_statement
5621 | selection_statement
5622 | iteration_statement
5626 | unchecked_statement
5634 : valid_declaration_statement
5635 | block_variable_declaration
5637 report.Error (1023, GetLocation ($1), "An embedded statement may not be a declaration or labeled statement");
5642 report.Error (1023, GetLocation ($1), "An embedded statement may not be a declaration or labeled statement");
5647 Error_SyntaxError (yyToken);
5648 $$ = new EmptyStatement (GetLocation ($1));
5655 // Uses lexer.Location because semicolon location is not kept in quick mode
5656 $$ = new EmptyStatement (lexer.Location);
5661 : identifier_inside_body COLON
5663 var lt = (LocatedToken) $1;
5664 LabeledStatement labeled = new LabeledStatement (lt.Value, current_block, lt.Location);
5665 lbag.AddLocation (labeled, GetLocation ($2));
5666 current_block.AddLabel (labeled);
5667 current_block.AddStatement (labeled);
5673 : variable_type_simple
5674 | variable_type_simple rank_specifiers
5677 $1 = new SimpleName ("var", ((VarExpr) $1).Location);
5679 $$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
5684 * The following is from Rhys' grammar:
5685 * > Types in local variable declarations must be recognized as
5686 * > expressions to prevent reduce/reduce errors in the grammar.
5687 * > The expressions are converted into types during semantic analysis.
5689 variable_type_simple
5690 : type_name_expression opt_nullable
5692 // Ok, the above "primary_expression" is there to get rid of
5693 // both reduce/reduce and shift/reduces in the grammar, it should
5694 // really just be "type_name". If you use type_name, a reduce/reduce
5695 // creeps up. If you use namespace_or_type_name (which is all we need
5696 // really) two shift/reduces appear.
5699 // So the super-trick is that primary_expression
5700 // can only be either a SimpleName or a MemberAccess.
5701 // The MemberAccess case arises when you have a fully qualified type-name like :
5703 // SimpleName is when you have
5706 var expr = (ATypeNameExpression) $1;
5708 if (expr.Name == "var" && expr is SimpleName)
5709 $$ = new VarExpr (expr.Location);
5713 $$ = new ComposedCast (expr, (ComposedTypeSpecifier) $2);
5716 | type_name_expression pointer_stars
5718 var expr = (ATypeNameExpression) $1;
5719 $$ = new ComposedCast (expr, (ComposedTypeSpecifier) $2);
5721 | builtin_type_expression
5727 | pointer_star pointer_stars
5729 ((ComposedTypeSpecifier) $1).Next = (ComposedTypeSpecifier) $2;
5737 $$ = ComposedTypeSpecifier.CreatePointer (GetLocation ($1));
5741 identifier_inside_body
5745 $$ = Error_AwaitAsIdentifier ($1);
5749 block_variable_declaration
5750 : variable_type identifier_inside_body
5752 var lt = (LocatedToken) $2;
5753 var li = new LocalVariable (current_block, lt.Value, lt.Location);
5754 current_block.AddLocalName (li);
5755 current_variable = new BlockVariable ((FullNamedExpression) $1, li);
5757 opt_local_variable_initializer opt_variable_declarators SEMICOLON
5759 $$ = current_variable;
5760 current_variable = null;
5762 lbag.AddLocation ($$, PopLocation (), GetLocation ($6));
5764 lbag.AddLocation ($$, GetLocation ($6));
5766 | CONST variable_type identifier_inside_body
5768 var lt = (LocatedToken) $3;
5769 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.Constant, lt.Location);
5770 current_block.AddLocalName (li);
5771 current_variable = new BlockConstant ((FullNamedExpression) $2, li);
5773 const_variable_initializer opt_const_declarators SEMICOLON
5775 $$ = current_variable;
5776 current_variable = null;
5777 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($7));
5781 opt_local_variable_initializer
5783 | ASSIGN block_variable_initializer
5785 current_variable.Initializer = (Expression) $2;
5786 PushLocation (GetLocation ($1));
5787 $$ = current_variable;
5791 if (yyToken == Token.OPEN_BRACKET_EXPR) {
5792 report.Error (650, lexer.Location,
5793 "Syntax error, bad array declarator. To declare a managed array the rank specifier precedes the variable's identifier. To declare a fixed size buffer field, use the fixed keyword before the field type");
5795 Error_SyntaxError (yyToken);
5800 opt_variable_declarators
5802 | variable_declarators
5805 opt_using_or_fixed_variable_declarators
5807 | variable_declarators
5809 foreach (var d in current_variable.Declarators) {
5810 if (d.Initializer == null)
5811 Error_MissingInitializer (d.Variable.Location);
5816 variable_declarators
5817 : variable_declarator
5818 | variable_declarators variable_declarator
5822 : COMMA identifier_inside_body
5824 var lt = (LocatedToken) $2;
5825 var li = new LocalVariable (current_variable.Variable, lt.Value, lt.Location);
5826 var d = new BlockVariableDeclarator (li, null);
5827 current_variable.AddDeclarator (d);
5828 current_block.AddLocalName (li);
5829 lbag.AddLocation (d, GetLocation ($1));
5831 | COMMA identifier_inside_body ASSIGN block_variable_initializer
5833 var lt = (LocatedToken) $2;
5834 var li = new LocalVariable (current_variable.Variable, lt.Value, lt.Location);
5835 var d = new BlockVariableDeclarator (li, (Expression) $4);
5836 current_variable.AddDeclarator (d);
5837 current_block.AddLocalName (li);
5838 lbag.AddLocation (d, GetLocation ($1), GetLocation ($3));
5842 const_variable_initializer
5845 report.Error (145, lexer.Location, "A const field requires a value to be provided");
5847 | ASSIGN constant_initializer_expr
5849 current_variable.Initializer = (Expression) $2;
5853 opt_const_declarators
5860 | const_declarators const_declarator
5864 : COMMA identifier_inside_body ASSIGN constant_initializer_expr
5866 var lt = (LocatedToken) $2;
5867 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.Constant, lt.Location);
5868 var d = new BlockVariableDeclarator (li, (Expression) $4);
5869 current_variable.AddDeclarator (d);
5870 current_block.AddLocalName (li);
5871 lbag.AddLocation (d, GetLocation ($1), GetLocation ($3));
5875 block_variable_initializer
5876 : variable_initializer
5877 | STACKALLOC simple_type OPEN_BRACKET_EXPR expression CLOSE_BRACKET
5879 $$ = new StackAlloc ((Expression) $2, (Expression) $4, GetLocation ($1));
5880 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($5));
5882 | STACKALLOC simple_type
5884 report.Error (1575, GetLocation ($1), "A stackalloc expression requires [] after type");
5885 $$ = new StackAlloc ((Expression) $2, null, GetLocation ($1));
5889 expression_statement
5890 : statement_expression SEMICOLON
5893 lbag.AddStatement ($$, GetLocation ($2));
5895 | statement_expression COMPLETE_COMPLETION { $$ = $1; }
5896 | statement_expression CLOSE_BRACE
5899 report.Error (1002, GetLocation ($2), "; expected");
5900 lexer.putback ('}');
5904 interactive_expression_statement
5905 : interactive_statement_expression SEMICOLON { $$ = $1; }
5906 | interactive_statement_expression COMPLETE_COMPLETION { $$ = $1; }
5910 // We have to do the wrapping here and not in the case above,
5911 // because statement_expression is used for example in for_statement
5913 statement_expression
5916 ExpressionStatement s = $1 as ExpressionStatement;
5918 var expr = $1 as Expression;
5919 $$ = new StatementErrorExpression (expr);
5921 $$ = new StatementExpression (s);
5926 interactive_statement_expression
5929 Expression expr = (Expression) $1;
5930 $$ = new StatementExpression (new OptionalAssign (expr, lexer.Location));
5934 Error_SyntaxError (yyToken);
5935 $$ = new EmptyStatement (GetLocation ($1));
5945 : IF open_parens_any boolean_expression CLOSE_PARENS
5948 if ($5 is EmptyStatement)
5949 Warning_EmptyStatement (GetLocation ($5));
5951 $$ = new If ((BooleanExpression) $3, (Statement) $5, GetLocation ($1));
5952 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
5954 | IF open_parens_any boolean_expression CLOSE_PARENS
5955 embedded_statement ELSE embedded_statement
5957 $$ = new If ((BooleanExpression) $3, (Statement) $5, (Statement) $7, GetLocation ($1));
5958 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4), GetLocation ($6));
5960 if ($5 is EmptyStatement)
5961 Warning_EmptyStatement (GetLocation ($5));
5962 if ($7 is EmptyStatement)
5963 Warning_EmptyStatement (GetLocation ($7));
5965 | IF open_parens_any boolean_expression error
5967 Error_SyntaxError (yyToken);
5969 $$ = new If ((BooleanExpression) $3, null, GetLocation ($1));
5970 lbag.AddStatement ($$, GetLocation ($2));
5975 : SWITCH open_parens_any expression CLOSE_PARENS OPEN_BRACE
5977 start_block (GetLocation ($5));
5979 opt_switch_sections CLOSE_BRACE
5981 $$ = new Switch ((Expression) $3, (ExplicitBlock) current_block.Explicit, GetLocation ($1));
5982 end_block (GetLocation ($8));
5983 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
5985 | SWITCH open_parens_any expression error
5987 Error_SyntaxError (yyToken);
5989 $$ = new Switch ((Expression) $3, null, GetLocation ($1));
5990 lbag.AddStatement ($$, GetLocation ($2));
5997 report.Warning (1522, 1, current_block.StartLocation, "Empty switch block");
6004 | switch_sections switch_section
6007 Error_SyntaxError (yyToken);
6012 : switch_labels statement_list
6018 var label = (SwitchLabel) $1;
6019 label.SectionStart = true;
6020 current_block.AddStatement (label);
6022 | switch_labels switch_label
6024 current_block.AddStatement ((Statement) $2);
6029 : CASE constant_expression COLON
6031 $$ = new SwitchLabel ((Expression) $2, GetLocation ($1));
6032 lbag.AddLocation ($$, GetLocation ($3));
6034 | CASE constant_expression error
6036 Error_SyntaxError (yyToken);
6037 $$ = new SwitchLabel ((Expression) $2, GetLocation ($1));
6040 | CASE pattern_expr_invocation COLON
6042 if (lang_version != LanguageVersion.Experimental)
6043 FeatureIsNotAvailable (GetLocation ($2), "pattern matching");
6045 $$ = new SwitchLabel ((Expression) $2, GetLocation ($1)) {
6046 PatternMatching = true
6048 lbag.AddLocation ($$, GetLocation ($3));
6053 $$ = new SwitchLabel (null, GetLocation ($1));
6065 : WHILE open_parens_any boolean_expression CLOSE_PARENS embedded_statement
6067 if ($5 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6068 Warning_EmptyStatement (GetLocation ($5));
6070 $$ = new While ((BooleanExpression) $3, (Statement) $5, GetLocation ($1));
6071 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6073 | WHILE open_parens_any boolean_expression error
6075 Error_SyntaxError (yyToken);
6077 $$ = new While ((BooleanExpression) $3, null, GetLocation ($1));
6078 lbag.AddStatement ($$, GetLocation ($2));
6083 : DO embedded_statement WHILE open_parens_any boolean_expression CLOSE_PARENS SEMICOLON
6085 $$ = new Do ((Statement) $2, (BooleanExpression) $5, GetLocation ($1), GetLocation ($3));
6086 lbag.AddStatement ($$, GetLocation ($3), GetLocation ($4), GetLocation ($6), GetLocation ($7));
6088 | DO embedded_statement error
6090 Error_SyntaxError (yyToken);
6091 $$ = new Do ((Statement) $2, null, GetLocation ($1), Location.Null);
6093 | DO embedded_statement WHILE open_parens_any boolean_expression error
6095 Error_SyntaxError (yyToken);
6097 $$ = new Do ((Statement) $2, (BooleanExpression) $5, GetLocation ($1), GetLocation ($3));
6098 lbag.AddStatement ($$, GetLocation ($3), GetLocation ($4));
6103 : FOR open_parens_any
6105 start_block (GetLocation ($2));
6106 current_block.IsCompilerGenerated = true;
6107 For f = new For (GetLocation ($1));
6108 current_block.AddStatement (f);
6117 // Has to use be extra rule to recover started block
6119 : opt_for_initializer SEMICOLON
6121 ((For) $0).Initializer = (Statement) $1;
6123 // Pass the "For" object to the iterator_part4
6124 oob_stack.Push ($0);
6126 for_condition_and_iterator_part
6129 var locations = (Tuple<Location,Location>) $4;
6131 if ($5 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6132 Warning_EmptyStatement (GetLocation ($5));
6135 f.Statement = (Statement) $5;
6136 lbag.AddStatement (f, current_block.StartLocation, GetLocation ($2), GetLocation (locations.Item1), GetLocation (locations.Item2));
6138 $$ = end_block (GetLocation ($2));
6142 Error_SyntaxError (yyToken);
6143 $$ = end_block (current_block.StartLocation);
6147 for_condition_and_iterator_part
6148 : opt_for_condition SEMICOLON
6150 For f = (For) oob_stack.Peek ();
6151 f.Condition = (BooleanExpression) $1;
6154 $$ = new Tuple<Location,Location> (GetLocation ($2), (Location) $4);
6157 // Handle errors in the case of opt_for_condition being followed by
6158 // a close parenthesis
6159 | opt_for_condition close_parens_close_brace {
6160 report.Error (1525, GetLocation ($2), "Unexpected symbol `}'");
6161 For f = (For) oob_stack.Peek ();
6162 f.Condition = (BooleanExpression) $1;
6163 $$ = new Tuple<Location,Location> (GetLocation ($2), GetLocation ($2));
6168 : opt_for_iterator CLOSE_PARENS {
6169 For f = (For) oob_stack.Peek ();
6170 f.Iterator = (Statement) $1;
6171 $$ = GetLocation ($2);
6173 | opt_for_iterator CLOSE_BRACE {
6174 report.Error (1525, GetLocation ($2), "Unexpected symbol expected ')'");
6175 For f = (For) oob_stack.Peek ();
6176 f.Iterator = (Statement) $1;
6177 $$ = GetLocation ($2);
6181 close_parens_close_brace
6183 | CLOSE_BRACE { lexer.putback ('}'); }
6187 : /* empty */ { $$ = new EmptyStatement (lexer.Location); }
6192 : variable_type identifier_inside_body
6194 var lt = (LocatedToken) $2;
6195 var li = new LocalVariable (current_block, lt.Value, lt.Location);
6196 current_block.AddLocalName (li);
6197 current_variable = new BlockVariable ((FullNamedExpression) $1, li);
6199 opt_local_variable_initializer opt_variable_declarators
6201 $$ = current_variable;
6203 lbag.AddLocation (current_variable, PopLocation ());
6205 current_variable = null;
6207 | statement_expression_list
6211 : /* empty */ { $$ = null; }
6212 | boolean_expression
6216 : /* empty */ { $$ = new EmptyStatement (lexer.Location); }
6221 : statement_expression_list
6224 statement_expression_list
6225 : statement_expression
6226 | statement_expression_list COMMA statement_expression
6228 var sl = $1 as StatementList;
6230 sl = new StatementList ((Statement) $1, (Statement) $3);
6231 lbag.AddStatement (sl, GetLocation ($2));
6233 sl.Add ((Statement) $3);
6234 lbag.AppendTo (sl, GetLocation ($2));
6242 : FOREACH open_parens_any type error
6244 report.Error (230, GetLocation ($1), "Type and identifier are both required in a foreach statement");
6246 start_block (GetLocation ($2));
6247 current_block.IsCompilerGenerated = true;
6249 Foreach f = new Foreach ((Expression) $3, null, null, null, null, GetLocation ($1));
6250 current_block.AddStatement (f);
6252 lbag.AddStatement (f, GetLocation ($2));
6253 $$ = end_block (GetLocation ($4));
6255 | FOREACH open_parens_any type identifier_inside_body error
6257 Error_SyntaxError (yyToken);
6259 start_block (GetLocation ($2));
6260 current_block.IsCompilerGenerated = true;
6262 var lt = (LocatedToken) $4;
6263 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.ForeachVariable | LocalVariable.Flags.Used, lt.Location);
6264 current_block.AddLocalName (li);
6266 Foreach f = new Foreach ((Expression) $3, li, null, null, null, GetLocation ($1));
6267 current_block.AddStatement (f);
6269 lbag.AddStatement (f, GetLocation ($2));
6270 $$ = end_block (GetLocation ($5));
6272 | FOREACH open_parens_any type identifier_inside_body IN expression CLOSE_PARENS
6274 start_block (GetLocation ($2));
6275 current_block.IsCompilerGenerated = true;
6277 var lt = (LocatedToken) $4;
6278 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.ForeachVariable | LocalVariable.Flags.Used, lt.Location);
6279 current_block.AddLocalName (li);
6284 if ($9 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6285 Warning_EmptyStatement (GetLocation ($9));
6287 Foreach f = new Foreach ((Expression) $3, (LocalVariable) $8, (Expression) $6, (Statement) $9, current_block, GetLocation ($1));
6288 lbag.AddStatement (f, GetLocation ($2), GetLocation ($5), GetLocation ($7));
6289 end_block (GetLocation ($7));
6297 | continue_statement
6307 $$ = new Break (GetLocation ($1));
6308 lbag.AddStatement ($$, GetLocation ($2));
6313 : CONTINUE SEMICOLON
6315 $$ = new Continue (GetLocation ($1));
6316 lbag.AddStatement ($$, GetLocation ($2));
6320 Error_SyntaxError (yyToken);
6321 $$ = new Continue (GetLocation ($1));
6326 : GOTO identifier_inside_body SEMICOLON
6328 var lt = (LocatedToken) $2;
6329 $$ = new Goto (lt.Value, GetLocation ($1));
6330 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($3));
6332 | GOTO CASE constant_expression SEMICOLON
6334 $$ = new GotoCase ((Expression) $3, GetLocation ($1));
6335 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6337 | GOTO DEFAULT SEMICOLON
6339 $$ = new GotoDefault (GetLocation ($1));
6340 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($3));
6345 : RETURN opt_expression SEMICOLON
6347 $$ = new Return ((Expression) $2, GetLocation ($1));
6348 lbag.AddStatement ($$, GetLocation ($3));
6350 | RETURN expression error
6352 Error_SyntaxError (yyToken);
6353 $$ = new Return ((Expression) $2, GetLocation ($1));
6357 Error_SyntaxError (yyToken);
6358 $$ = new Return (null, GetLocation ($1));
6363 : THROW expression SEMICOLON
6365 $$ = new Throw ((Expression) $2, GetLocation ($1));
6366 lbag.AddStatement ($$, GetLocation ($3));
6370 $$ = new Throw (null, GetLocation ($1));
6371 lbag.AddStatement ($$, GetLocation ($2));
6373 | THROW expression error
6375 Error_SyntaxError (yyToken);
6376 $$ = new Throw ((Expression) $2, GetLocation ($1));
6380 Error_SyntaxError (yyToken);
6381 $$ = new Throw (null, GetLocation ($1));
6386 : identifier_inside_body RETURN opt_expression SEMICOLON
6388 var lt = (LocatedToken) $1;
6389 string s = lt.Value;
6391 report.Error (1003, lt.Location, "; expected");
6392 } else if ($3 == null) {
6393 report.Error (1627, GetLocation ($4), "Expression expected after yield return");
6394 } else if (lang_version == LanguageVersion.ISO_1){
6395 FeatureIsNotAvailable (lt.Location, "iterators");
6398 current_block.Explicit.RegisterIteratorYield ();
6399 $$ = new Yield ((Expression) $3, lt.Location);
6400 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6402 | identifier_inside_body RETURN expression error
6404 Error_SyntaxError (yyToken);
6406 var lt = (LocatedToken) $1;
6407 string s = lt.Value;
6409 report.Error (1003, lt.Location, "; expected");
6410 } else if ($3 == null) {
6411 report.Error (1627, GetLocation ($4), "Expression expected after yield return");
6412 } else if (lang_version == LanguageVersion.ISO_1){
6413 FeatureIsNotAvailable (lt.Location, "iterators");
6416 current_block.Explicit.RegisterIteratorYield ();
6417 $$ = new Yield ((Expression) $3, lt.Location);
6418 lbag.AddStatement ($$, GetLocation ($2));
6420 | identifier_inside_body BREAK SEMICOLON
6422 var lt = (LocatedToken) $1;
6423 string s = lt.Value;
6425 report.Error (1003, lt.Location, "; expected");
6426 } else if (lang_version == LanguageVersion.ISO_1){
6427 FeatureIsNotAvailable (lt.Location, "iterators");
6430 current_block.ParametersBlock.TopBlock.IsIterator = true;
6431 $$ = new YieldBreak (lt.Location);
6432 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($3));
6442 : TRY block catch_clauses
6444 $$ = new TryCatch ((Block) $2, (List<Catch>) $3, GetLocation ($1), false);
6446 | TRY block FINALLY block
6448 $$ = new TryFinally ((Statement) $2, (ExplicitBlock) $4, GetLocation ($1));
6449 lbag.AddStatement ($$, GetLocation ($3));
6451 | TRY block catch_clauses FINALLY block
6453 $$ = new TryFinally (new TryCatch ((Block) $2, (List<Catch>) $3, Location.Null, true), (ExplicitBlock) $5, GetLocation ($1));
6454 lbag.AddStatement ($$, GetLocation ($4));
6458 Error_SyntaxError (1524, yyToken);
6459 $$ = new TryCatch ((Block) $2, null, GetLocation ($1), false);
6466 var l = new List<Catch> (2);
6471 | catch_clauses catch_clause
6473 var l = (List<Catch>) $1;
6475 Catch c = (Catch) $2;
6476 var prev_catch = l [l.Count - 1];
6477 if (prev_catch.IsGeneral && prev_catch.Filter == null) {
6478 report.Error (1017, c.loc, "Try statement already has an empty catch block");
6488 | identifier_inside_body
6492 : CATCH opt_catch_filter block
6494 var c = new Catch ((ExplicitBlock) $3, GetLocation ($1));
6495 c.Filter = (CatchFilterExpression) $2;
6498 | CATCH open_parens_any type opt_identifier CLOSE_PARENS
6500 start_block (GetLocation ($2));
6501 var c = new Catch ((ExplicitBlock) current_block, GetLocation ($1));
6502 c.TypeExpression = (FullNamedExpression) $3;
6505 var lt = (LocatedToken) $4;
6506 c.Variable = new LocalVariable (current_block, lt.Value, lt.Location);
6507 current_block.AddLocalName (c.Variable);
6510 lbag.AddLocation (c, GetLocation ($2), GetLocation ($5));
6512 lexer.parsing_catch_when = true;
6514 opt_catch_filter_or_error
6516 ((Catch) $6).Filter = (CatchFilterExpression) $7;
6519 | CATCH open_parens_any error
6521 if (yyToken == Token.CLOSE_PARENS) {
6522 report.Error (1015, lexer.Location,
6523 "A type that derives from `System.Exception', `object', or `string' expected");
6525 Error_SyntaxError (yyToken);
6528 $$ = new Catch (null, GetLocation ($1));
6532 opt_catch_filter_or_error
6533 : opt_catch_filter block_prepared
6539 end_block (Location.Null);
6540 Error_SyntaxError (yyToken);
6547 lexer.parsing_catch_when = false;
6551 lexer.parsing_catch_when = false;
6553 open_parens_any expression CLOSE_PARENS
6555 if (lang_version <= LanguageVersion.V_5)
6556 FeatureIsNotAvailable (GetLocation ($1), "exception filter");
6558 $$ = new CatchFilterExpression ((Expression) $4, GetLocation ($1));
6559 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($5));
6566 $$ = new Checked ((Block) $2, GetLocation ($1));
6573 $$ = new Unchecked ((Block) $2, GetLocation ($1));
6580 if (!settings.Unsafe)
6581 Error_UnsafeCodeNotAllowed (GetLocation ($1));
6583 $$ = new Unsafe ((Block) $3, GetLocation ($1));
6588 : LOCK open_parens_any expression CLOSE_PARENS embedded_statement
6590 if ($5 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6591 Warning_EmptyStatement (GetLocation ($5));
6593 $$ = new Lock ((Expression) $3, (Statement) $5, GetLocation ($1));
6594 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6596 | LOCK open_parens_any expression error
6598 Error_SyntaxError (yyToken);
6600 $$ = new Lock ((Expression) $3, null, GetLocation ($1));
6601 lbag.AddStatement ($$, GetLocation ($2));
6606 : FIXED open_parens_any variable_type identifier_inside_body
6608 start_block (GetLocation ($2));
6610 current_block.IsCompilerGenerated = true;
6611 var lt = (LocatedToken) $4;
6612 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.FixedVariable | LocalVariable.Flags.Used, lt.Location);
6613 current_block.AddLocalName (li);
6614 current_variable = new Fixed.VariableDeclaration ((FullNamedExpression) $3, li);
6616 using_or_fixed_variable_initializer opt_using_or_fixed_variable_declarators CLOSE_PARENS
6618 $$ = current_variable;
6619 current_variable = null;
6623 if ($10 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6624 Warning_EmptyStatement (GetLocation ($10));
6626 Fixed f = new Fixed ((Fixed.VariableDeclaration) $9, (Statement) $10, GetLocation ($1));
6627 current_block.AddStatement (f);
6628 lbag.AddStatement (f, GetLocation ($2), GetLocation ($8));
6629 $$ = end_block (GetLocation ($8));
6634 : USING open_parens_any variable_type identifier_inside_body
6636 start_block (GetLocation ($2));
6638 current_block.IsCompilerGenerated = true;
6639 var lt = (LocatedToken) $4;
6640 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.UsingVariable | LocalVariable.Flags.Used, lt.Location);
6641 current_block.AddLocalName (li);
6642 current_variable = new Using.VariableDeclaration ((FullNamedExpression) $3, li);
6644 using_initialization CLOSE_PARENS
6646 $$ = current_variable;
6647 current_variable = null;
6651 if ($9 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6652 Warning_EmptyStatement (GetLocation ($9));
6654 Using u = new Using ((Using.VariableDeclaration) $8, (Statement) $9, GetLocation ($1));
6655 current_block.AddStatement (u);
6656 $$ = end_block (GetLocation ($7));
6658 | USING open_parens_any expression CLOSE_PARENS embedded_statement
6660 if ($5 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6661 Warning_EmptyStatement (GetLocation ($5));
6663 $$ = new Using ((Expression) $3, (Statement) $5, GetLocation ($1));
6664 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6666 | USING open_parens_any expression error
6668 Error_SyntaxError (yyToken);
6670 $$ = new Using ((Expression) $3, null, GetLocation ($1));
6671 lbag.AddStatement ($$, GetLocation ($2));
6675 using_initialization
6676 : using_or_fixed_variable_initializer opt_using_or_fixed_variable_declarators
6679 // It has to be here for the parent to safely restore artificial block
6680 Error_SyntaxError (yyToken);
6684 using_or_fixed_variable_initializer
6687 Error_MissingInitializer (lexer.Location);
6689 | ASSIGN variable_initializer
6691 current_variable.Initializer = (Expression) $2;
6692 $$ = current_variable;
6700 : first_from_clause query_body
6702 lexer.query_parsing = false;
6704 Linq.AQueryClause from = $1 as Linq.AQueryClause;
6706 from.Tail.Next = (Linq.AQueryClause)$2;
6709 current_block.SetEndLocation (lexer.Location);
6710 current_block = current_block.Parent;
6712 | nested_from_clause query_body
6714 Linq.AQueryClause from = $1 as Linq.AQueryClause;
6716 from.Tail.Next = (Linq.AQueryClause)$2;
6719 current_block.SetEndLocation (lexer.Location);
6720 current_block = current_block.Parent;
6723 // Bubble up COMPLETE_COMPLETION productions
6724 | first_from_clause COMPLETE_COMPLETION {
6725 lexer.query_parsing = false;
6728 current_block.SetEndLocation (lexer.Location);
6729 current_block = current_block.Parent;
6731 | nested_from_clause COMPLETE_COMPLETION {
6733 current_block.SetEndLocation (lexer.Location);
6734 current_block = current_block.Parent;
6739 : FROM_FIRST identifier_inside_body IN expression
6741 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6743 var lt = (LocatedToken) $2;
6744 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
6745 var clause = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, (Expression)$4, rv, GetLocation ($1));
6746 lbag.AddLocation (clause, GetLocation ($3));
6747 $$ = new Linq.QueryExpression (clause);
6749 | FROM_FIRST type identifier_inside_body IN expression
6751 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6753 var lt = (LocatedToken) $3;
6754 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
6755 var clause = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, (Expression)$5, rv, GetLocation ($1)) {
6756 IdentifierType = (FullNamedExpression)$2
6758 lbag.AddLocation (clause, GetLocation ($4));
6759 $$ = new Linq.QueryExpression (clause);
6764 : FROM identifier_inside_body IN expression
6766 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6768 var lt = (LocatedToken) $2;
6769 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
6770 var clause = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, (Expression)$4, rv, GetLocation ($1));
6771 lbag.AddLocation (clause, GetLocation ($3));
6772 $$ = new Linq.QueryExpression (clause);
6774 | FROM type identifier_inside_body IN expression
6776 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6778 var lt = (LocatedToken) $3;
6779 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
6780 var clause = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, (Expression)$5, rv, GetLocation ($1)) {
6781 IdentifierType = (FullNamedExpression)$2
6783 lbag.AddLocation (clause, GetLocation ($4));
6784 $$ = new Linq.QueryExpression (clause);
6789 : FROM identifier_inside_body IN
6791 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6795 var lt = (LocatedToken) $2;
6796 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
6797 $$ = new Linq.SelectMany ((Linq.QueryBlock)current_block, sn, (Expression)$5, GetLocation ($1));
6799 current_block.SetEndLocation (lexer.Location);
6800 current_block = current_block.Parent;
6802 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
6803 lbag.AddLocation ($$, GetLocation ($3));
6805 | FROM type identifier_inside_body IN
6807 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6811 var lt = (LocatedToken) $3;
6812 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
6814 $$ = new Linq.SelectMany ((Linq.QueryBlock)current_block, sn, (Expression)$6, GetLocation ($1)) {
6815 IdentifierType = (FullNamedExpression)$2
6818 current_block.SetEndLocation (lexer.Location);
6819 current_block = current_block.Parent;
6821 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
6823 lbag.AddLocation ($$, GetLocation ($4));
6828 : query_body_clauses select_or_group_clause opt_query_continuation
6830 Linq.AQueryClause head = (Linq.AQueryClause)$2;
6833 head.Next = (Linq.AQueryClause)$3;
6836 Linq.AQueryClause clause = (Linq.AQueryClause)$1;
6837 clause.Tail.Next = head;
6843 | select_or_group_clause opt_query_continuation
6845 Linq.AQueryClause head = (Linq.AQueryClause)$2;
6848 Linq.AQueryClause clause = (Linq.AQueryClause)$1;
6849 clause.Tail.Next = head;
6855 | query_body_clauses COMPLETE_COMPLETION
6856 | query_body_clauses error
6858 report.Error (742, GetLocation ($2), "Unexpected symbol `{0}'. A query body must end with select or group clause", GetSymbolName (yyToken));
6863 Error_SyntaxError (yyToken);
6868 select_or_group_clause
6871 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6875 $$ = new Linq.Select ((Linq.QueryBlock)current_block, (Expression)$3, GetLocation ($1));
6877 current_block.SetEndLocation (lexer.Location);
6878 current_block = current_block.Parent;
6882 if (linq_clause_blocks == null)
6883 linq_clause_blocks = new Stack<Linq.QueryBlock> ();
6885 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6886 linq_clause_blocks.Push ((Linq.QueryBlock)current_block);
6890 current_block.SetEndLocation (lexer.Location);
6891 current_block = current_block.Parent;
6893 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6897 var obj = (object[]) $5;
6899 $$ = new Linq.GroupBy ((Linq.QueryBlock)current_block, (Expression)$3, linq_clause_blocks.Pop (), (Expression)obj[0], GetLocation ($1));
6900 lbag.AddLocation ($$, (Location) obj[1]);
6902 current_block.SetEndLocation (lexer.Location);
6903 current_block = current_block.Parent;
6908 : BY expression_or_error
6910 $$ = new object[] { $2, GetLocation ($1) };
6914 Error_SyntaxError (yyToken);
6915 $$ = new object[2] { null, Location.Null };
6921 | query_body_clauses query_body_clause
6923 ((Linq.AQueryClause)$1).Tail.Next = (Linq.AQueryClause)$2;
6937 : LET identifier_inside_body ASSIGN
6939 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6943 var lt = (LocatedToken) $2;
6944 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
6945 $$ = new Linq.Let ((Linq.QueryBlock) current_block, sn, (Expression)$5, GetLocation ($1));
6946 lbag.AddLocation ($$, GetLocation ($3));
6948 current_block.SetEndLocation (lexer.Location);
6949 current_block = current_block.Parent;
6951 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
6958 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6962 $$ = new Linq.Where ((Linq.QueryBlock)current_block, (Expression)$3, GetLocation ($1));
6964 current_block.SetEndLocation (lexer.Location);
6965 current_block = current_block.Parent;
6970 : JOIN identifier_inside_body IN
6972 if (linq_clause_blocks == null)
6973 linq_clause_blocks = new Stack<Linq.QueryBlock> ();
6975 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6976 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
6978 expression_or_error ON
6980 current_block.SetEndLocation (lexer.Location);
6981 current_block = current_block.Parent;
6983 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6984 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
6986 expression_or_error EQUALS
6988 current_block.AddStatement (new ContextualReturn ((Expression) $8));
6989 current_block.SetEndLocation (lexer.Location);
6990 current_block = current_block.Parent;
6992 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6994 expression_or_error opt_join_into
6996 current_block.AddStatement (new ContextualReturn ((Expression) $11));
6997 current_block.SetEndLocation (lexer.Location);
6999 var outer_selector = linq_clause_blocks.Pop ();
7000 var block = linq_clause_blocks.Pop ();
7002 var lt = (LocatedToken) $2;
7003 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
7004 Linq.RangeVariable into;
7008 $$ = new Linq.Join (block, sn, (Expression)$5, outer_selector, (Linq.QueryBlock) current_block, GetLocation ($1));
7009 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($6), GetLocation ($9));
7012 // Set equals right side parent to beginning of linq query, it is not accessible therefore cannot cause name collisions
7014 var parent = block.Parent;
7015 while (parent is Linq.QueryBlock) {
7016 parent = parent.Parent;
7018 current_block.Parent = parent;
7020 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
7022 lt = (LocatedToken) $12;
7023 into = new Linq.RangeVariable (lt.Value, lt.Location);
7025 $$ = new Linq.GroupJoin (block, sn, (Expression)$5, outer_selector, (Linq.QueryBlock) current_block, into, GetLocation ($1));
7026 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($6), GetLocation ($9), GetLocation ($12));
7029 current_block = block.Parent;
7030 ((Linq.QueryBlock)current_block).AddRangeVariable (into);
7032 | JOIN type identifier_inside_body IN
7034 if (linq_clause_blocks == null)
7035 linq_clause_blocks = new Stack<Linq.QueryBlock> ();
7037 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7038 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
7040 expression_or_error ON
7042 current_block.SetEndLocation (lexer.Location);
7043 current_block = current_block.Parent;
7045 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7046 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
7048 expression_or_error EQUALS
7050 current_block.AddStatement (new ContextualReturn ((Expression) $9));
7051 current_block.SetEndLocation (lexer.Location);
7052 current_block = current_block.Parent;
7054 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7056 expression_or_error opt_join_into
7058 current_block.AddStatement (new ContextualReturn ((Expression) $12));
7059 current_block.SetEndLocation (lexer.Location);
7061 var outer_selector = linq_clause_blocks.Pop ();
7062 var block = linq_clause_blocks.Pop ();
7064 var lt = (LocatedToken) $3;
7065 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
7066 Linq.RangeVariable into;
7070 $$ = new Linq.Join (block, sn, (Expression)$6, outer_selector, (Linq.QueryBlock) current_block, GetLocation ($1)) {
7071 IdentifierType = (FullNamedExpression)$2
7073 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($6), GetLocation ($9));
7076 // Set equals right side parent to beginning of linq query, it is not accessible therefore cannot cause name collisions
7078 var parent = block.Parent;
7079 while (parent is Linq.QueryBlock) {
7080 parent = parent.Parent;
7082 current_block.Parent = parent;
7084 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
7086 lt = (LocatedToken) $13;
7087 into = new Linq.RangeVariable (lt.Value, lt.Location); // TODO:
7089 $$ = new Linq.GroupJoin (block, sn, (Expression)$6, outer_selector, (Linq.QueryBlock) current_block, into, GetLocation ($1)) {
7090 IdentifierType = (FullNamedExpression)$2
7094 current_block = block.Parent;
7095 ((Linq.QueryBlock)current_block).AddRangeVariable (into);
7101 | INTO identifier_inside_body
7110 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7114 current_block.SetEndLocation (lexer.Location);
7115 current_block = current_block.Parent;
7125 current_block.SetEndLocation (lexer.Location);
7126 current_block = current_block.Parent;
7128 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7132 ((Linq.AQueryClause)$1).Next = (Linq.AQueryClause)$4;
7139 | orderings_then_by COMMA
7141 current_block.SetEndLocation (lexer.Location);
7142 current_block = current_block.Parent;
7144 current_block = new Linq.QueryBlock ((Linq.QueryBlock) current_block, lexer.Location);
7148 ((Linq.AQueryClause)$1).Tail.Next = (Linq.AQueryClause)$4;
7156 $$ = new Linq.OrderByAscending ((Linq.QueryBlock) current_block, (Expression)$1);
7158 | expression ASCENDING
7160 $$ = new Linq.OrderByAscending ((Linq.QueryBlock) current_block, (Expression)$1);
7161 lbag.AddLocation ($$, GetLocation ($2));
7163 | expression DESCENDING
7165 $$ = new Linq.OrderByDescending ((Linq.QueryBlock) current_block, (Expression)$1);
7166 lbag.AddLocation ($$, GetLocation ($2));
7173 $$ = new Linq.ThenByAscending ((Linq.QueryBlock) current_block, (Expression)$1);
7175 | expression ASCENDING
7177 $$ = new Linq.ThenByAscending ((Linq.QueryBlock) current_block, (Expression)$1);
7178 lbag.AddLocation ($$, GetLocation ($2));
7180 | expression DESCENDING
7182 $$ = new Linq.ThenByDescending ((Linq.QueryBlock) current_block, (Expression)$1);
7183 lbag.AddLocation ($$, GetLocation ($2));
7188 opt_query_continuation
7190 | INTO identifier_inside_body
7192 // query continuation block is not linked with query block but with block
7193 // before. This means each query can use same range variable names for
7194 // different identifiers.
7196 current_block.SetEndLocation (GetLocation ($1));
7197 current_block = current_block.Parent;
7199 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7201 if (linq_clause_blocks == null)
7202 linq_clause_blocks = new Stack<Linq.QueryBlock> ();
7204 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
7208 var current_block = linq_clause_blocks.Pop ();
7209 var lt = (LocatedToken) $2;
7210 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
7211 $$ = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, null, rv, GetLocation ($1)) {
7212 next = (Linq.AQueryClause)$4
7218 // Support for using the compiler as an interactive parser
7220 // The INTERACTIVE_PARSER token is first sent to parse our
7221 // productions; If the result is a Statement, the parsing
7222 // is repeated, this time with INTERACTIVE_PARSE_WITH_BLOCK
7223 // to setup the blocks in advance.
7225 // This setup is here so that in the future we can add
7226 // support for other constructs (type parsing, namespaces, etc)
7227 // that do not require a block to be setup in advance
7231 : EVAL_STATEMENT_PARSER EOF
7232 | EVAL_USING_DECLARATIONS_UNIT_PARSER using_directives opt_COMPLETE_COMPLETION
7233 | EVAL_STATEMENT_PARSER
7235 current_container = current_type = new Class (current_container, new MemberName ("<InteractiveExpressionClass>"), Modifiers.PUBLIC, null);
7237 // (ref object retval)
7238 Parameter [] mpar = new Parameter [1];
7239 mpar [0] = new Parameter (new TypeExpression (compiler.BuiltinTypes.Object, Location.Null), "$retval", Parameter.Modifier.REF, null, Location.Null);
7241 ParametersCompiled pars = new ParametersCompiled (mpar);
7242 var mods = Modifiers.PUBLIC | Modifiers.STATIC;
7243 if (settings.Unsafe)
7244 mods |= Modifiers.UNSAFE;
7246 current_local_parameters = pars;
7247 var method = new InteractiveMethod (
7249 new TypeExpression (compiler.BuiltinTypes.Void, Location.Null),
7253 current_type.AddMember (method);
7254 oob_stack.Push (method);
7256 interactive_async = false;
7258 ++lexer.parsing_block;
7259 start_block (lexer.Location);
7261 interactive_statement_list opt_COMPLETE_COMPLETION
7263 --lexer.parsing_block;
7264 var method = (InteractiveMethod) oob_stack.Pop ();
7265 method.Block = (ToplevelBlock) end_block(lexer.Location);
7267 if (interactive_async == true) {
7268 method.ChangeToAsync ();
7271 InteractiveResult = (Class) pop_current_class ();
7272 current_local_parameters = null;
7274 | EVAL_COMPILATION_UNIT_PARSER interactive_compilation_unit
7277 interactive_compilation_unit
7278 : opt_extern_alias_directives opt_using_directives
7279 | opt_extern_alias_directives opt_using_directives namespace_or_type_declarations
7282 opt_COMPLETE_COMPLETION
7284 | COMPLETE_COMPLETION
7287 close_brace_or_complete_completion
7289 | COMPLETE_COMPLETION
7293 // XML documentation code references micro parser
7295 documentation_parsing
7298 module.DocumentationBuilder.ParsedName = (MemberName) $2;
7303 : doc_type_declaration_name opt_doc_method_sig
7305 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$2;
7307 | builtin_types opt_doc_method_sig
7309 module.DocumentationBuilder.ParsedBuiltinType = (TypeExpression)$1;
7310 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$2;
7313 | VOID opt_doc_method_sig
7315 module.DocumentationBuilder.ParsedBuiltinType = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
7316 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$2;
7319 | builtin_types DOT IDENTIFIER opt_doc_method_sig
7321 module.DocumentationBuilder.ParsedBuiltinType = (TypeExpression)$1;
7322 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$4;
7323 var lt = (LocatedToken) $3;
7324 $$ = new MemberName (lt.Value);
7326 | doc_type_declaration_name DOT THIS
7328 $$ = new MemberName ((MemberName) $1, MemberCache.IndexerNameAlias, Location.Null);
7330 | doc_type_declaration_name DOT THIS OPEN_BRACKET
7332 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
7334 opt_doc_parameters CLOSE_BRACKET
7336 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$6;
7337 $$ = new MemberName ((MemberName) $1, MemberCache.IndexerNameAlias, Location.Null);
7339 | EXPLICIT OPERATOR type opt_doc_method_sig
7341 var p = (List<DocumentationParameter>)$4 ?? new List<DocumentationParameter> (1);
7342 p.Add (new DocumentationParameter ((FullNamedExpression) $3));
7343 module.DocumentationBuilder.ParsedParameters = p;
7344 module.DocumentationBuilder.ParsedOperator = Operator.OpType.Explicit;
7347 | IMPLICIT OPERATOR type opt_doc_method_sig
7349 var p = (List<DocumentationParameter>)$4 ?? new List<DocumentationParameter> (1);
7350 p.Add (new DocumentationParameter ((FullNamedExpression) $3));
7351 module.DocumentationBuilder.ParsedParameters = p;
7352 module.DocumentationBuilder.ParsedOperator = Operator.OpType.Implicit;
7355 | OPERATOR overloadable_operator opt_doc_method_sig
7357 var p = (List<DocumentationParameter>)$3;
7358 module.DocumentationBuilder.ParsedParameters = p;
7359 module.DocumentationBuilder.ParsedOperator = (Operator.OpType) $2;
7364 doc_type_declaration_name
7365 : type_declaration_name
7366 | doc_type_declaration_name DOT type_declaration_name
7368 $$ = new MemberName (((MemberName) $1), (MemberName) $3);
7376 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
7378 opt_doc_parameters CLOSE_PARENS
7387 $$ = new List<DocumentationParameter> (0);
7395 var parameters = new List<DocumentationParameter> ();
7396 parameters.Add ((DocumentationParameter) $1);
7399 | doc_parameters COMMA doc_parameter
7401 var parameters = $1 as List<DocumentationParameter>;
7402 parameters.Add ((DocumentationParameter) $3);
7408 : opt_parameter_modifier parameter_type
7411 $$ = new DocumentationParameter ((Parameter.Modifier) $1, (FullNamedExpression) $2);
7413 $$ = new DocumentationParameter ((FullNamedExpression) $2);
7420 // A class used to hold info about an operator declarator
7422 class OperatorDeclaration {
7423 public readonly Operator.OpType optype;
7424 public readonly FullNamedExpression ret_type;
7425 public readonly Location location;
7427 public OperatorDeclaration (Operator.OpType op, FullNamedExpression ret_type, Location location)
7430 this.ret_type = ret_type;
7431 this.location = location;
7435 void Error_ExpectingTypeName (Expression expr)
7437 if (expr is Invocation){
7438 report.Error (1002, expr.Location, "Expecting `;'");
7440 expr.Error_InvalidExpressionStatement (report);
7444 void Error_ParameterModifierNotValid (string modifier, Location loc)
7446 report.Error (631, loc, "The parameter modifier `{0}' is not valid in this context",
7450 void Error_DuplicateParameterModifier (Location loc, Parameter.Modifier mod)
7452 report.Error (1107, loc, "Duplicate parameter modifier `{0}'",
7453 Parameter.GetModifierSignature (mod));
7456 void Error_TypeExpected (Location loc)
7458 report.Error (1031, loc, "Type expected");
7461 void Error_UnsafeCodeNotAllowed (Location loc)
7463 report.Error (227, loc, "Unsafe code requires the `unsafe' command line option to be specified");
7466 void Warning_EmptyStatement (Location loc)
7468 report.Warning (642, 3, loc, "Possible mistaken empty statement");
7471 void Error_NamedArgumentExpected (NamedArgument a)
7473 report.Error (1738, a.Location, "Named arguments must appear after the positional arguments");
7476 void Error_MissingInitializer (Location loc)
7478 report.Error (210, loc, "You must provide an initializer in a fixed or using statement declaration");
7481 object Error_AwaitAsIdentifier (object token)
7484 report.Error (4003, GetLocation (token), "`await' cannot be used as an identifier within an async method or lambda expression");
7485 return new LocatedToken ("await", GetLocation (token));
7491 void push_current_container (TypeDefinition tc, object partial_token)
7493 if (module.Evaluator != null){
7494 tc.Definition.Modifiers = tc.ModFlags = (tc.ModFlags & ~Modifiers.AccessibilityMask) | Modifiers.PUBLIC;
7498 undo.AddTypeContainer (current_container, tc);
7501 if (partial_token != null)
7502 current_container.AddPartial (tc);
7504 current_container.AddTypeContainer (tc);
7506 ++lexer.parsing_declaration;
7507 current_container = tc;
7511 TypeContainer pop_current_class ()
7513 var retval = current_container;
7515 current_container = current_container.Parent;
7516 current_type = current_type.Parent as TypeDefinition;
7521 [System.Diagnostics.Conditional ("FULL_AST")]
7522 void StoreModifierLocation (object token, Location loc)
7527 if (mod_locations == null)
7528 mod_locations = new List<Tuple<Modifiers, Location>> ();
7530 mod_locations.Add (Tuple.Create ((Modifiers) token, loc));
7533 [System.Diagnostics.Conditional ("FULL_AST")]
7534 void PushLocation (Location loc)
7536 if (location_stack == null)
7537 location_stack = new Stack<Location> ();
7539 location_stack.Push (loc);
7542 Location PopLocation ()
7544 if (location_stack == null)
7545 return Location.Null;
7547 return location_stack.Pop ();
7550 string CheckAttributeTarget (int token, string a, Location l)
7553 case "assembly" : case "module" : case "field" : case "method" : case "param" : case "property" : case "type" :
7557 if (!Tokenizer.IsValidIdentifier (a)) {
7558 Error_SyntaxError (token);
7560 report.Warning (658, 1, l,
7561 "`{0}' is invalid attribute target. All attributes in this attribute section will be ignored", a);
7564 return string.Empty;
7567 static bool IsUnaryOperator (Operator.OpType op)
7571 case Operator.OpType.LogicalNot:
7572 case Operator.OpType.OnesComplement:
7573 case Operator.OpType.Increment:
7574 case Operator.OpType.Decrement:
7575 case Operator.OpType.True:
7576 case Operator.OpType.False:
7577 case Operator.OpType.UnaryPlus:
7578 case Operator.OpType.UnaryNegation:
7584 void syntax_error (Location l, string msg)
7586 report.Error (1003, l, "Syntax error, " + msg);
7591 public Tokenizer Lexer {
7597 public CSharpParser (SeekableStreamReader reader, CompilationSourceFile file, ParserSession session)
7598 : this (reader, file, file.Compiler.Report, session)
7602 public CSharpParser (SeekableStreamReader reader, CompilationSourceFile file, Report report, ParserSession session)
7605 current_container = current_namespace = file;
7607 this.module = file.Module;
7608 this.compiler = file.Compiler;
7609 this.settings = compiler.Settings;
7610 this.report = report;
7612 lang_version = settings.Version;
7613 yacc_verbose_flag = settings.VerboseParserFlag;
7614 doc_support = settings.DocumentationFile != null;
7615 lexer = new Tokenizer (reader, file, session, report);
7616 oob_stack = new Stack<object> ();
7617 lbag = session.LocationsBag;
7618 use_global_stacks = session.UseJayGlobalArrays;
7619 parameters_bucket = session.ParametersStack;
7622 public void parse ()
7624 eof_token = Token.EOF;
7627 if (yacc_verbose_flag > 1)
7628 yyparse (lexer, new yydebug.yyDebugSimple ());
7632 Tokenizer tokenizer = lexer as Tokenizer;
7633 tokenizer.cleanup ();
7634 } catch (Exception e){
7635 if (e is yyParser.yyUnexpectedEof) {
7636 Error_SyntaxError (yyToken);
7637 UnexpectedEOF = true;
7641 if (e is yyParser.yyException) {
7642 if (report.Errors == 0)
7643 report.Error (-25, lexer.Location, "Parsing error");
7645 // Used by compiler-tester to test internal errors
7646 if (yacc_verbose_flag > 0 || e is FatalException)
7649 report.Error (589, lexer.Location, "Internal compiler error during parsing" + e);
7654 void CheckToken (int error, int yyToken, string msg, Location loc)
7656 if (yyToken >= Token.FIRST_KEYWORD && yyToken <= Token.LAST_KEYWORD)
7657 report.Error (error, loc, "{0}: `{1}' is a keyword", msg, GetTokenName (yyToken));
7659 report.Error (error, loc, msg);
7662 string ConsumeStoredComment ()
7664 string s = tmpComment;
7666 Lexer.doc_state = XmlCommentState.Allowed;
7670 void FeatureIsNotAvailable (Location loc, string feature)
7672 report.FeatureIsNotAvailable (compiler, loc, feature);
7675 Location GetLocation (object obj)
7677 var lt = obj as LocatedToken;
7681 var mn = obj as MemberName;
7685 var expr = obj as Expression;
7687 return expr.Location;
7689 return lexer.Location;
7692 void start_block (Location loc)
7694 if (current_block == null) {
7695 current_block = new ToplevelBlock (compiler, current_local_parameters, loc);
7696 parsing_anonymous_method = false;
7697 } else if (parsing_anonymous_method) {
7698 current_block = new ParametersBlock (current_block, current_local_parameters, loc);
7699 parsing_anonymous_method = false;
7701 current_block = new ExplicitBlock (current_block, loc, Location.Null);
7706 end_block (Location loc)
7708 Block retval = current_block.Explicit;
7709 retval.SetEndLocation (loc);
7710 current_block = retval.Parent;
7714 void start_anonymous (bool isLambda, ParametersCompiled parameters, bool isAsync, Location loc)
7716 oob_stack.Push (current_anonymous_method);
7717 oob_stack.Push (current_local_parameters);
7718 oob_stack.Push (current_variable);
7719 oob_stack.Push (async_block);
7721 current_local_parameters = parameters;
7723 if (lang_version <= LanguageVersion.ISO_2)
7724 FeatureIsNotAvailable (loc, "lambda expressions");
7726 current_anonymous_method = new LambdaExpression (loc);
7728 if (lang_version == LanguageVersion.ISO_1)
7729 FeatureIsNotAvailable (loc, "anonymous methods");
7731 current_anonymous_method = new AnonymousMethodExpression (loc);
7734 async_block = isAsync;
7735 // Force the next block to be created as a ToplevelBlock
7736 parsing_anonymous_method = true;
7740 * Completes the anonymous method processing, if lambda_expr is null, this
7741 * means that we have a Statement instead of an Expression embedded
7743 AnonymousMethodExpression end_anonymous (ParametersBlock anon_block)
7745 AnonymousMethodExpression retval;
7748 anon_block.IsAsync = true;
7750 current_anonymous_method.Block = anon_block;
7751 retval = current_anonymous_method;
7753 async_block = (bool) oob_stack.Pop ();
7754 current_variable = (BlockVariable) oob_stack.Pop ();
7755 current_local_parameters = (ParametersCompiled) oob_stack.Pop ();
7756 current_anonymous_method = (AnonymousMethodExpression) oob_stack.Pop ();
7761 void Error_SyntaxError (int token)
7763 Error_SyntaxError (0, token);
7766 void Error_SyntaxError (int error_code, int token)
7768 Error_SyntaxError (error_code, token, "Unexpected symbol");
7771 void Error_SyntaxError (int error_code, int token, string msg)
7773 Lexer.CompleteOnEOF = false;
7775 // An error message has been reported by tokenizer
7776 if (token == Token.ERROR)
7779 // Avoid duplicit error message after unterminated string literals
7780 if (token == Token.LITERAL && lexer.Location.Column == 0)
7783 string symbol = GetSymbolName (token);
7784 string expecting = GetExpecting ();
7785 var loc = lexer.Location - symbol.Length;
7787 if (error_code == 0) {
7788 if (expecting == "`identifier'") {
7789 if (token > Token.FIRST_KEYWORD && token < Token.LAST_KEYWORD) {
7790 report.Error (1041, loc, "Identifier expected, `{0}' is a keyword", symbol);
7795 expecting = "identifier";
7796 } else if (expecting == "`)'") {
7803 if (string.IsNullOrEmpty (expecting))
7804 report.Error (error_code, loc, "{1} `{0}'", symbol, msg);
7806 report.Error (error_code, loc, "{2} `{0}', expecting {1}", symbol, expecting, msg);
7809 string GetExpecting ()
7811 int [] tokens = yyExpectingTokens (yyExpectingState);
7812 var names = new List<string> (tokens.Length);
7813 bool has_type = false;
7814 bool has_identifier = false;
7815 for (int i = 0; i < tokens.Length; i++){
7816 int token = tokens [i];
7817 has_identifier |= token == Token.IDENTIFIER;
7819 string name = GetTokenName (token);
7820 if (name == "<internal>")
7823 has_type |= name == "type";
7824 if (names.Contains (name))
7831 // Too many tokens to enumerate
7833 if (names.Count > 8)
7836 if (has_type && has_identifier)
7837 names.Remove ("identifier");
7839 if (names.Count == 1)
7840 return "`" + GetTokenName (tokens [0]) + "'";
7842 StringBuilder sb = new StringBuilder ();
7844 int count = names.Count;
7845 for (int i = 0; i < count; i++){
7846 bool last = i + 1 == count;
7850 sb.Append (names [i]);
7851 sb.Append (last ? "'" : count < 3 ? "' " : "', ");
7853 return sb.ToString ();
7857 string GetSymbolName (int token)
7861 return ((Constant)lexer.Value).GetValue ().ToString ();
7862 case Token.IDENTIFIER:
7863 return ((LocatedToken)lexer.Value).Value;
7905 case Token.BITWISE_AND:
7907 case Token.BITWISE_OR:
7921 case Token.OP_SHIFT_LEFT:
7923 case Token.OP_SHIFT_RIGHT:
7943 case Token.OP_COALESCING:
7945 case Token.OP_MULT_ASSIGN:
7947 case Token.OP_DIV_ASSIGN:
7949 case Token.OP_MOD_ASSIGN:
7951 case Token.OP_ADD_ASSIGN:
7953 case Token.OP_SUB_ASSIGN:
7955 case Token.OP_SHIFT_LEFT_ASSIGN:
7957 case Token.OP_SHIFT_RIGHT_ASSIGN:
7959 case Token.OP_AND_ASSIGN:
7961 case Token.OP_XOR_ASSIGN:
7963 case Token.OP_OR_ASSIGN:
7967 return GetTokenName (token);
7970 static string GetTokenName (int token)
7973 case Token.ABSTRACT:
7995 case Token.CONTINUE:
7999 case Token.DELEGATE:
8009 case Token.EXPLICIT:
8012 case Token.EXTERN_ALIAS:
8028 case Token.IMPLICIT:
8032 case Token.INTERFACE:
8034 case Token.INTERNAL:
8040 case Token.NAMESPACE:
8046 case Token.OPERATOR:
8050 case Token.OVERRIDE:
8056 case Token.PROTECTED:
8060 case Token.READONLY:
8072 case Token.STACKALLOC:
8073 return "stackalloc";
8083 case Token.THROW_EXPR:
8091 case Token.UNCHECKED:
8099 case Token.VOLATILE:
8107 case Token.REFVALUE:
8108 return "__refvalue";
8118 case Token.FROM_FIRST:
8136 case Token.ASCENDING:
8138 case Token.DESCENDING:
8139 return "descending";
8146 case Token.OPEN_BRACE:
8148 case Token.CLOSE_BRACE:
8150 case Token.OPEN_BRACKET:
8151 case Token.OPEN_BRACKET_EXPR:
8153 case Token.CLOSE_BRACKET:
8155 case Token.OPEN_PARENS_CAST:
8156 case Token.OPEN_PARENS_LAMBDA:
8157 case Token.OPEN_PARENS:
8159 case Token.CLOSE_PARENS:
8165 case Token.DEFAULT_COLON:
8169 case Token.SEMICOLON:
8175 case Token.INTERPOLATED_STRING_END:
8177 case Token.INTERPOLATED_STRING:
8186 case Token.BITWISE_AND:
8187 case Token.BITWISE_OR:
8194 case Token.OP_SHIFT_LEFT:
8195 case Token.OP_SHIFT_RIGHT:
8203 case Token.OP_COALESCING:
8204 case Token.OP_MULT_ASSIGN:
8205 case Token.OP_DIV_ASSIGN:
8206 case Token.OP_MOD_ASSIGN:
8207 case Token.OP_ADD_ASSIGN:
8208 case Token.OP_SUB_ASSIGN:
8209 case Token.OP_SHIFT_LEFT_ASSIGN:
8210 case Token.OP_SHIFT_RIGHT_ASSIGN:
8211 case Token.OP_AND_ASSIGN:
8212 case Token.OP_XOR_ASSIGN:
8213 case Token.OP_OR_ASSIGN:
8214 case Token.INTERR_OPERATOR:
8215 return "<operator>";
8237 case Token.OP_GENERICS_LT:
8238 case Token.GENERIC_DIMENSION:
8240 case Token.OP_GENERICS_GT:
8243 case Token.INTERR_NULLABLE:
8245 case Token.DOUBLE_COLON:
8249 case Token.IDENTIFIER:
8251 return "identifier";
8254 return "end-of-file";
8256 // All of these are internal.
8259 case Token.FIRST_KEYWORD:
8260 case Token.EVAL_COMPILATION_UNIT_PARSER:
8261 case Token.EVAL_USING_DECLARATIONS_UNIT_PARSER:
8262 case Token.EVAL_STATEMENT_PARSER:
8263 case Token.LAST_KEYWORD:
8264 case Token.GENERATE_COMPLETION:
8265 case Token.COMPLETE_COMPLETION:
8266 return "<internal>";
8268 // A bit more robust.
8270 return yyNames [token];