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
265 /* C# keywords which are not really keywords */
271 /* C# single character operators/punctuation. */
299 /* C# multi-character operators. */
304 %token OP_SHIFT_RIGHT
311 %token OP_MULT_ASSIGN
316 %token OP_SHIFT_LEFT_ASSIGN
317 %token OP_SHIFT_RIGHT_ASSIGN
324 /* Generics <,> tokens */
325 %token OP_GENERICS_LT
326 %token OP_GENERICS_LT_DECL
327 %token OP_GENERICS_GT
332 %token OPEN_PARENS_LAMBDA
333 %token OPEN_PARENS_CAST
334 %token GENERIC_DIMENSION
336 %token OPEN_BRACKET_EXPR
338 // Make the parser go into eval mode parsing (statements and compilation units).
339 %token EVAL_STATEMENT_PARSER
340 %token EVAL_COMPILATION_UNIT_PARSER
341 %token EVAL_USING_DECLARATIONS_UNIT_PARSER
346 // This token is generated to trigger the completion engine at this point
348 %token GENERATE_COMPLETION
351 // This token is return repeatedly after the first GENERATE_COMPLETION
352 // token is produced and before the final EOF
354 %token COMPLETE_COMPLETION
356 /* Add precedence rules to solve dangling else s/r conflict */
360 /* Define the operator tokens and their precedences */
368 %left OP_SHIFT_LEFT OP_SHIFT_RIGHT
370 %left STAR DIV PERCENT
371 %right BANG CARRET UMINUS
372 %nonassoc OP_INC OP_DEC
374 %left OPEN_BRACKET OPEN_BRACE
377 %start compilation_unit
381 : outer_declaration opt_EOF
383 Lexer.check_incorrect_doc_comment ();
385 | interactive_parsing { Lexer.CompleteOnEOF = false; } opt_EOF
386 | documentation_parsing
390 : opt_extern_alias_directives opt_using_directives
391 | opt_extern_alias_directives opt_using_directives namespace_or_type_declarations opt_attributes
394 Attributes attrs = (Attributes) $4;
395 report.Error (1730, attrs.Attrs [0].Location,
396 "Assembly and module attributes must precede all other elements except using clauses and extern alias declarations");
398 current_namespace.UnattachedAttributes = attrs;
401 | opt_extern_alias_directives opt_using_directives attribute_sections
403 Attributes attrs = (Attributes) $3;
405 foreach (var a in attrs.Attrs) {
406 if (a.ExplicitTarget == "assembly" || a.ExplicitTarget == "module")
409 if (a.ExplicitTarget == null)
410 report.Error (-1671, a.Location, "Global attributes must have attribute target specified");
414 module.AddAttributes ((Attributes) $3, current_namespace);
418 if (yyToken == Token.EXTERN_ALIAS)
419 report.Error (439, lexer.Location, "An extern alias declaration must precede all other elements");
421 Error_SyntaxError (yyToken);
430 extern_alias_directives
431 : extern_alias_directive
432 | extern_alias_directives extern_alias_directive
435 extern_alias_directive
436 : EXTERN_ALIAS IDENTIFIER IDENTIFIER SEMICOLON
438 var lt = (LocatedToken) $2;
441 syntax_error (lt.Location, "`alias' expected");
443 if (lang_version == LanguageVersion.ISO_1)
444 FeatureIsNotAvailable (lt.Location, "external alias");
446 lt = (LocatedToken) $3;
447 if (lt.Value == QualifiedAliasMember.GlobalAlias) {
448 RootNamespace.Error_GlobalNamespaceRedefined (report, lt.Location);
451 var na = new UsingExternAlias (new SimpleMemberName (lt.Value, lt.Location), GetLocation ($1));
452 current_namespace.AddUsing (na);
454 lbag.AddLocation (na, GetLocation ($2), GetLocation ($4));
459 Error_SyntaxError (yyToken);
465 | using_directives using_directive
472 Lexer.doc_state = XmlCommentState.Allowed;
477 : USING opt_static namespace_or_type_expr SEMICOLON
481 if (lang_version <= LanguageVersion.V_5)
482 FeatureIsNotAvailable (GetLocation ($2), "using static");
484 uc = new UsingType ((ATypeNameExpression) $3, GetLocation ($1));
485 lbag.AddLocation (uc, GetLocation ($2), GetLocation ($4));
487 uc = new UsingNamespace ((ATypeNameExpression) $3, GetLocation ($1));
488 lbag.AddLocation (uc, GetLocation ($4));
491 current_namespace.AddUsing (uc);
493 | USING opt_static IDENTIFIER ASSIGN namespace_or_type_expr SEMICOLON
495 var lt = (LocatedToken) $3;
496 if (lang_version != LanguageVersion.ISO_1 && lt.Value == "global") {
497 report.Warning (440, 2, lt.Location,
498 "An alias named `global' will not be used when resolving `global::'. The global namespace will be used instead");
502 report.Error (8085, GetLocation ($2), "A `using static' directive cannot be used to declare an alias");
505 var un = new UsingAliasNamespace (new SimpleMemberName (lt.Value, lt.Location), (ATypeNameExpression) $5, GetLocation ($1));
506 current_namespace.AddUsing (un);
508 lbag.AddLocation (un, GetLocation ($4), GetLocation ($6));
512 Error_SyntaxError (yyToken);
523 // Strictly speaking, namespaces don't have attributes but
524 // we parse global attributes along with namespace declarations and then
527 namespace_declaration
528 : opt_attributes NAMESPACE namespace_name
530 Attributes attrs = (Attributes) $1;
531 var name = (MemberName) $3;
533 bool valid_global_attrs = true;
534 if ((current_namespace.DeclarationFound || current_namespace != file)) {
535 valid_global_attrs = false;
537 foreach (var a in attrs.Attrs) {
538 if (a.ExplicitTarget == "assembly" || a.ExplicitTarget == "module")
541 valid_global_attrs = false;
546 if (!valid_global_attrs)
547 report.Error (1671, name.Location, "A namespace declaration cannot have modifiers or attributes");
550 module.AddAttributes (attrs, current_namespace);
552 var ns = new NamespaceContainer (name, current_namespace);
553 current_namespace.AddTypeContainer (ns);
554 current_container = current_namespace = ns;
559 Lexer.doc_state = XmlCommentState.Allowed;
561 opt_extern_alias_directives opt_using_directives opt_namespace_or_type_declarations CLOSE_BRACE opt_semicolon_error
564 lbag.AddLocation (current_container, GetLocation ($2), GetLocation ($5), GetLocation ($10), GetLocation ($11));
566 lbag.AddLocation (current_container, GetLocation ($2), GetLocation ($5), GetLocation ($10));
568 current_container = current_namespace = current_namespace.Parent;
570 | opt_attributes NAMESPACE namespace_name
572 report.Error (1514, lexer.Location, "Unexpected symbol `{0}', expecting `.' or `{{'", GetSymbolName (yyToken));
574 var name = (MemberName) $3;
575 var ns = new NamespaceContainer (name, current_namespace);
576 lbag.AddLocation (ns, GetLocation ($2));
577 current_namespace.AddTypeContainer (ns);
586 Error_SyntaxError (yyToken);
594 var lt = (LocatedToken) $1;
595 $$ = new MemberName (lt.Value, lt.Location);
597 | namespace_name DOT IDENTIFIER
599 var lt = (LocatedToken) $3;
600 $$ = new MemberName ((MemberName) $1, lt.Value, lt.Location);
601 lbag.AddLocation ($$, GetLocation ($2));
605 Error_SyntaxError (yyToken);
606 $$ = new MemberName ("<invalid>", lexer.Location);
625 opt_extern_alias_directives
627 | extern_alias_directives
630 opt_namespace_or_type_declarations
632 | namespace_or_type_declarations
635 namespace_or_type_declarations
636 : namespace_or_type_declaration
637 | namespace_or_type_declarations namespace_or_type_declaration
640 namespace_or_type_declaration
644 TypeContainer ds = (TypeContainer)$1;
646 if ((ds.ModFlags & (Modifiers.PRIVATE | Modifiers.PROTECTED)) != 0){
647 report.Error (1527, ds.Location,
648 "Namespace elements cannot be explicitly declared as private, protected or protected internal");
651 // Here is a trick, for explicit attributes we don't know where they belong to until
652 // we parse succeeding declaration hence we parse them as normal and re-attach them
653 // when we know whether they are global (assembly:, module:) or local (type:).
654 if (ds.OptAttributes != null) {
655 ds.OptAttributes.ConvertGlobalAttributes (ds, current_namespace, !current_namespace.DeclarationFound && current_namespace == file);
658 current_namespace.DeclarationFound = true;
660 | namespace_declaration
662 current_namespace.DeclarationFound = true;
664 | attribute_sections CLOSE_BRACE {
665 current_namespace.UnattachedAttributes = (Attributes) $1;
666 report.Error (1518, lexer.Location, "Attributes must be attached to class, delegate, enum, interface or struct");
674 | interface_declaration
676 | delegate_declaration
678 // Enable this when we have handled all errors, because this acts as a generic fallback
681 // Console.WriteLine ("Token=" + yyToken);
682 // report.Error (1518, GetLocation ($1), "Expected class, struct, interface, enum or delegate");
698 var sect = (List<Attribute>) $1;
699 $$ = new Attributes (sect);
701 | attribute_sections attribute_section
703 Attributes attrs = $1 as Attributes;
704 var sect = (List<Attribute>) $2;
706 attrs = new Attributes (sect);
707 else if (sect != null)
708 attrs.AddAttributes (sect);
716 PushLocation (GetLocation ($1));
717 lexer.parsing_attribute_section = true;
719 attribute_section_cont
721 lexer.parsing_attribute_section = false;
726 attribute_section_cont
727 : attribute_target COLON
729 current_attr_target = (string) $1;
730 if (current_attr_target == "assembly" || current_attr_target == "module") {
731 Lexer.check_incorrect_doc_comment ();
734 attribute_list opt_comma CLOSE_BRACKET
736 // when attribute target is invalid
737 if (current_attr_target == string.Empty)
738 $$ = new List<Attribute> (0);
742 lbag.InsertLocation ($$, 0, PopLocation ());
744 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($5), GetLocation ($6));
746 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($6));
749 current_attr_target = null;
750 lexer.parsing_attribute_section = false;
752 | attribute_list opt_comma CLOSE_BRACKET
756 lbag.InsertLocation ($$, 0, PopLocation ());
758 lbag.AddLocation ($$, GetLocation($2), GetLocation ($3));
760 lbag.AddLocation ($$, GetLocation($3));
765 Error_SyntaxError (yyToken);
767 var lt = (LocatedToken) $1;
768 var tne = new SimpleName (lt.Value, null, lt.Location);
770 $$ = new List<Attribute> () {
771 new Attribute (null, tne, null, GetLocation ($1), false)
776 if (CheckAttributeTarget (yyToken, GetTokenName (yyToken), GetLocation ($1)).Length > 0)
777 Error_SyntaxError (yyToken);
786 var lt = (LocatedToken) $1;
787 $$ = CheckAttributeTarget (yyToken, lt.Value, lt.Location);
789 | EVENT { $$ = "event"; }
790 | RETURN { $$ = "return"; }
796 $$ = new List<Attribute> (4) { (Attribute) $1 };
798 | attribute_list COMMA attribute
800 var attrs = (List<Attribute>) $1;
802 attrs.Add ((Attribute) $3);
803 lbag.AppendTo (attrs, GetLocation ($2));
813 ++lexer.parsing_block;
815 opt_attribute_arguments
817 --lexer.parsing_block;
819 var tne = (ATypeNameExpression) $1;
820 if (tne.HasTypeArguments) {
821 report.Error (404, tne.Location, "Attributes cannot be generic");
824 $$ = new Attribute (current_attr_target, tne, (Arguments[]) $3, GetLocation ($1), lexer.IsEscapedIdentifier (tne));
829 : namespace_or_type_expr
832 opt_attribute_arguments
833 : /* empty */ { $$ = null; }
834 | OPEN_PARENS attribute_arguments CLOSE_PARENS
842 : /* empty */ { $$ = null; }
843 | positional_or_named_argument
845 Arguments a = new Arguments (4);
846 a.Add ((Argument) $1);
847 $$ = new Arguments [] { a, null };
849 | named_attribute_argument
851 Arguments a = new Arguments (4);
852 a.Add ((Argument) $1);
853 $$ = new Arguments [] { null, a };
855 | attribute_arguments COMMA positional_or_named_argument
857 Arguments[] o = (Arguments[]) $1;
859 report.Error (1016, ((Argument) $3).Expr.Location, "Named attribute arguments must appear after the positional arguments");
860 o [0] = new Arguments (4);
863 Arguments args = ((Arguments) o [0]);
864 if (args.Count > 0 && !($3 is NamedArgument) && args [args.Count - 1] is NamedArgument)
865 Error_NamedArgumentExpected ((NamedArgument) args [args.Count - 1]);
867 args.Add ((Argument) $3);
869 | attribute_arguments COMMA named_attribute_argument
871 Arguments[] o = (Arguments[]) $1;
873 o [1] = new Arguments (4);
876 ((Arguments) o [1]).Add ((Argument) $3);
880 positional_or_named_argument
883 $$ = new Argument ((Expression) $1);
888 Error_SyntaxError (yyToken);
893 named_attribute_argument
896 ++lexer.parsing_block;
900 --lexer.parsing_block;
901 var lt = (LocatedToken) $1;
902 $$ = new NamedArgument (lt.Value, lt.Location, (Expression) $4);
903 lbag.AddLocation ($$, GetLocation($2));
908 : identifier_inside_body COLON opt_named_modifier named_argument_expr
910 if (lang_version <= LanguageVersion.V_3)
911 FeatureIsNotAvailable (GetLocation ($1), "named argument");
913 // Avoid boxing in common case (no modifier)
914 var arg_mod = $3 == null ? Argument.AType.None : (Argument.AType) $3;
916 var lt = (LocatedToken) $1;
917 $$ = new NamedArgument (lt.Value, lt.Location, (Expression) $4, arg_mod);
918 lbag.AddLocation ($$, GetLocation($2));
923 : expression_or_error
924 // | declaration_expression
928 : /* empty */ { $$ = null; }
931 $$ = Argument.AType.Ref;
935 $$ = Argument.AType.Out;
939 opt_class_member_declarations
941 | class_member_declarations
944 class_member_declarations
945 : class_member_declaration
947 lexer.parsing_modifiers = true;
948 lexer.parsing_block = 0;
950 | class_member_declarations class_member_declaration
952 lexer.parsing_modifiers = true;
953 lexer.parsing_block = 0;
957 class_member_declaration
958 : constant_declaration
961 | property_declaration
963 | indexer_declaration
964 | operator_declaration
965 | constructor_declaration
966 | primary_constructor_body
967 | destructor_declaration
969 | attributes_without_members
973 report.Error (1519, lexer.Location, "Unexpected symbol `{0}' in class, struct, or interface member declaration",
974 GetSymbolName (yyToken));
976 lexer.parsing_generic_declaration = false;
980 primary_constructor_body
983 current_local_parameters = current_type.PrimaryConstructorParameters;
984 if (current_local_parameters == null) {
985 report.Error (9010, GetLocation ($1), "Primary constructor body is not allowed");
986 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
989 ++lexer.parsing_block;
990 start_block (GetLocation ($1));
992 opt_statement_list block_end
994 current_local_parameters = null;
995 var t = current_type as ClassOrStruct;
997 var b = (ToplevelBlock) $4;
998 if (t.PrimaryConstructorBlock != null) {
999 report.Error (8041, b.StartLocation, "Primary constructor already has a body");
1001 t.PrimaryConstructorBlock = b;
1014 type_declaration_name
1016 lexer.ConstraintsParsing = true;
1017 valid_param_mod = ParameterModifierType.PrimaryConstructor;
1018 push_current_container (new Struct (current_container, (MemberName) $6, (Modifiers) $2, (Attributes) $1), $3);
1020 opt_primary_parameters
1022 opt_type_parameter_constraints_clauses
1024 valid_param_mod = 0;
1025 lexer.ConstraintsParsing = false;
1028 current_type.PrimaryConstructorParameters = (ParametersCompiled) $8;
1031 current_container.SetConstraints ((List<Constraints>) $10);
1034 current_container.PartialContainer.DocComment = Lexer.consume_doc_comment ();
1036 lbag.AddMember (current_container, mod_locations, GetLocation ($4));
1038 lexer.parsing_modifiers = true;
1043 Lexer.doc_state = XmlCommentState.Allowed;
1045 opt_class_member_declarations CLOSE_BRACE
1047 --lexer.parsing_declaration;
1049 Lexer.doc_state = XmlCommentState.Allowed;
1054 lbag.AppendToMember (current_container, GetLocation ($12), GetLocation ($15));
1056 lbag.AppendToMember (current_container, GetLocation ($12), GetLocation ($15), GetLocation ($17));
1058 $$ = pop_current_class ();
1060 | opt_attributes opt_modifiers opt_partial STRUCT error
1062 Error_SyntaxError (yyToken);
1066 constant_declaration
1069 CONST type IDENTIFIER
1071 var lt = (LocatedToken) $5;
1072 var mod = (Modifiers) $2;
1073 current_field = new Const (current_type, (FullNamedExpression) $4, mod, new MemberName (lt.Value, lt.Location), (Attributes) $1);
1074 current_type.AddMember (current_field);
1076 if ((mod & Modifiers.STATIC) != 0) {
1077 report.Error (504, current_field.Location, "The constant `{0}' cannot be marked static", current_field.GetSignatureForError ());
1082 constant_initializer opt_constant_declarators SEMICOLON
1085 current_field.DocComment = Lexer.consume_doc_comment ();
1086 Lexer.doc_state = XmlCommentState.Allowed;
1089 current_field.Initializer = (ConstInitializer) $7;
1090 lbag.AddMember (current_field, mod_locations, GetLocation ($3), GetLocation ($9));
1091 current_field = null;
1097 Error_SyntaxError (yyToken);
1099 current_type.AddMember (new Const (current_type, (FullNamedExpression) $4, (Modifiers) $2, MemberName.Null, (Attributes) $1));
1103 opt_constant_declarators
1105 | constant_declarators
1108 constant_declarators
1109 : constant_declarator
1111 current_field.AddDeclarator ((FieldDeclarator) $1);
1113 | constant_declarators constant_declarator
1115 current_field.AddDeclarator ((FieldDeclarator) $2);
1120 : COMMA IDENTIFIER constant_initializer
1122 var lt = (LocatedToken) $2;
1123 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (ConstInitializer) $3);
1124 lbag.AddLocation ($$, GetLocation ($1));
1128 constant_initializer
1131 ++lexer.parsing_block;
1133 constant_initializer_expr
1135 --lexer.parsing_block;
1136 $$ = new ConstInitializer (current_field, (Expression) $3, GetLocation ($1));
1140 report.Error (145, lexer.Location, "A const field requires a value to be provided");
1145 constant_initializer_expr
1146 : constant_expression
1153 member_type IDENTIFIER
1155 lexer.parsing_generic_declaration = false;
1157 FullNamedExpression type = (FullNamedExpression) $3;
1158 if (type.Type != null && type.Type.Kind == MemberKind.Void)
1159 report.Error (670, GetLocation ($3), "Fields cannot have void type");
1161 var lt = (LocatedToken) $4;
1162 current_field = new Field (current_type, type, (Modifiers) $2, new MemberName (lt.Value, lt.Location), (Attributes) $1);
1163 current_type.AddField (current_field);
1166 opt_field_initializer
1167 opt_field_declarators
1171 current_field.DocComment = Lexer.consume_doc_comment ();
1172 Lexer.doc_state = XmlCommentState.Allowed;
1175 lbag.AddMember (current_field, mod_locations, GetLocation ($8));
1177 current_field = null;
1181 FIXED simple_type IDENTIFIER
1183 if (lang_version < LanguageVersion.ISO_2)
1184 FeatureIsNotAvailable (GetLocation ($3), "fixed size buffers");
1186 var lt = (LocatedToken) $5;
1187 current_field = new FixedField (current_type, (FullNamedExpression) $4, (Modifiers) $2,
1188 new MemberName (lt.Value, lt.Location), (Attributes) $1);
1190 current_type.AddField (current_field);
1192 fixed_field_size opt_fixed_field_declarators SEMICOLON
1195 current_field.DocComment = Lexer.consume_doc_comment ();
1196 Lexer.doc_state = XmlCommentState.Allowed;
1199 current_field.Initializer = (ConstInitializer) $7;
1200 lbag.AddMember (current_field, mod_locations, GetLocation ($9));
1202 current_field = null;
1206 FIXED simple_type error
1209 report.Error (1641, GetLocation ($5), "A fixed size buffer field must have the array size specifier after the field name");
1213 opt_field_initializer
1217 ++lexer.parsing_block;
1218 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
1219 start_block (GetLocation ($1));
1221 variable_initializer
1223 --lexer.parsing_block;
1224 current_field.Initializer = (Expression) $3;
1225 lbag.AppendToMember (current_field, GetLocation ($1));
1226 end_block (lexer.Location);
1227 current_local_parameters = null;
1231 opt_field_declarators
1239 current_field.AddDeclarator ((FieldDeclarator) $1);
1241 | field_declarators field_declarator
1243 current_field.AddDeclarator ((FieldDeclarator) $2);
1250 var lt = (LocatedToken) $2;
1251 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), null);
1252 lbag.AddLocation ($$, GetLocation ($1));
1254 | COMMA IDENTIFIER ASSIGN
1256 ++lexer.parsing_block;
1258 variable_initializer
1260 --lexer.parsing_block;
1261 var lt = (LocatedToken) $2;
1262 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (Expression) $5);
1263 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
1267 opt_fixed_field_declarators
1269 | fixed_field_declarators
1272 fixed_field_declarators
1273 : fixed_field_declarator
1275 current_field.AddDeclarator ((FieldDeclarator) $1);
1277 | fixed_field_declarators fixed_field_declarator
1279 current_field.AddDeclarator ((FieldDeclarator) $2);
1283 fixed_field_declarator
1284 : COMMA IDENTIFIER fixed_field_size
1286 var lt = (LocatedToken) $2;
1287 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (ConstInitializer) $3);
1288 lbag.AddLocation ($$, GetLocation ($1));
1295 ++lexer.parsing_block;
1297 expression CLOSE_BRACKET
1299 --lexer.parsing_block;
1300 $$ = new ConstInitializer (current_field, (Expression) $3, GetLocation ($1));
1301 lbag.AddLocation ($$, GetLocation ($4));
1303 | OPEN_BRACKET error
1305 report.Error (443, lexer.Location, "Value or constant expected");
1310 variable_initializer
1315 // It has to be here for the parent to safely restore artificial block
1316 Error_SyntaxError (yyToken);
1325 Lexer.doc_state = XmlCommentState.NotAllowed;
1327 // Was added earlier in the case of body being eof for full ast
1329 method_body_expression_block
1331 Method method = (Method) $1;
1332 method.Block = (ToplevelBlock) $3;
1333 async_block = false;
1335 if (method.Block == null) {
1336 method.ParameterInfo.CheckParameters (method);
1338 if ((method.ModFlags & Modifiers.ASYNC) != 0) {
1339 report.Error (1994, method.Location, "`{0}': The async modifier can only be used with methods that have a body",
1340 method.GetSignatureForError ());
1343 if (current_container.Kind == MemberKind.Interface) {
1344 report.Error (531, method.Location, "`{0}': interface members cannot have a definition",
1345 method.GetSignatureForError ());
1349 current_local_parameters = null;
1352 Lexer.doc_state = XmlCommentState.Allowed;
1360 method_declaration_name OPEN_PARENS
1362 valid_param_mod = ParameterModifierType.All;
1364 opt_formal_parameter_list CLOSE_PARENS
1366 valid_param_mod = 0;
1367 MemberName name = (MemberName) $4;
1368 current_local_parameters = (ParametersCompiled) $7;
1370 var method = Method.Create (current_type, (FullNamedExpression) $3, (Modifiers) $2,
1371 name, current_local_parameters, (Attributes) $1);
1373 current_type.AddMember (method);
1375 async_block = (method.ModFlags & Modifiers.ASYNC) != 0;
1378 method.DocComment = Lexer.consume_doc_comment ();
1380 lbag.AddMember (method, mod_locations, GetLocation ($5), GetLocation ($8));
1384 lexer.ConstraintsParsing = true;
1386 opt_type_parameter_constraints_clauses
1388 lexer.ConstraintsParsing = false;
1391 var method = (Method) $9;
1392 method.SetConstraints ((List<Constraints>) $10);
1402 lexer.parsing_generic_declaration = true;
1404 method_declaration_name
1407 lexer.parsing_generic_declaration = false;
1408 valid_param_mod = ParameterModifierType.All;
1410 opt_formal_parameter_list CLOSE_PARENS
1412 lexer.ConstraintsParsing = true;
1414 opt_type_parameter_constraints_clauses
1416 lexer.ConstraintsParsing = false;
1417 valid_param_mod = 0;
1419 MemberName name = (MemberName) $6;
1420 current_local_parameters = (ParametersCompiled) $9;
1422 var modifiers = (Modifiers) $2;
1423 modifiers |= Modifiers.PARTIAL;
1425 var method = Method.Create (current_type, new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($4)),
1426 modifiers, name, current_local_parameters, (Attributes) $1);
1428 current_type.AddMember (method);
1430 async_block = (method.ModFlags & Modifiers.ASYNC) != 0;
1433 method.SetConstraints ((List<Constraints>) $12);
1436 method.DocComment = Lexer.consume_doc_comment ();
1438 StoreModifierLocation (Modifiers.PARTIAL, GetLocation ($3));
1439 lbag.AddMember (method, mod_locations, GetLocation ($7), GetLocation ($10));
1445 modifiers method_declaration_name OPEN_PARENS opt_formal_parameter_list CLOSE_PARENS
1447 MemberName name = (MemberName) $5;
1448 report.Error (1585, name.Location,
1449 "Member modifier `{0}' must precede the member type and name", ModifiersExtensions.Name ((Modifiers) $4));
1451 var method = Method.Create (current_type, (FullNamedExpression) $3,
1452 0, name, (ParametersCompiled) $7, (Attributes) $1);
1454 current_type.AddMember (method);
1456 current_local_parameters = (ParametersCompiled) $7;
1459 method.DocComment = Lexer.consume_doc_comment ();
1466 method_declaration_name error
1468 Error_SyntaxError (yyToken);
1469 current_local_parameters = ParametersCompiled.Undefined;
1471 MemberName name = (MemberName) $4;
1472 var method = Method.Create (current_type, (FullNamedExpression) $3, (Modifiers) $2,
1473 name, current_local_parameters, (Attributes) $1);
1475 current_type.AddMember (method);
1478 method.DocComment = Lexer.consume_doc_comment ();
1484 method_body_expression_block
1491 | SEMICOLON { $$ = null; }
1497 if (lang_version < LanguageVersion.V_6) {
1498 FeatureIsNotAvailable (GetLocation ($1), "expression bodied members");
1501 ++lexer.parsing_block;
1502 start_block (GetLocation ($1));
1504 expression SEMICOLON
1506 lexer.parsing_block = 0;
1507 current_block.AddStatement (new ContextualReturn ((Expression) $3));
1508 var b = end_block (GetLocation ($4));
1509 b.IsCompilerGenerated = true;
1514 opt_formal_parameter_list
1515 : /* empty */ { $$ = ParametersCompiled.EmptyReadOnlyParameters; }
1516 | formal_parameter_list
1519 formal_parameter_list
1522 var pars_list = (List<Parameter>) $1;
1523 $$ = new ParametersCompiled (pars_list.ToArray ());
1525 | fixed_parameters COMMA parameter_array
1527 var pars_list = (List<Parameter>) $1;
1528 pars_list.Add ((Parameter) $3);
1530 $$ = new ParametersCompiled (pars_list.ToArray ());
1532 | fixed_parameters COMMA arglist_modifier
1534 var pars_list = (List<Parameter>) $1;
1535 pars_list.Add (new ArglistParameter (GetLocation ($3)));
1536 $$ = new ParametersCompiled (pars_list.ToArray (), true);
1538 | parameter_array COMMA error
1541 report.Error (231, ((Parameter) $1).Location, "A params parameter must be the last parameter in a formal parameter list");
1543 $$ = new ParametersCompiled (new Parameter[] { (Parameter) $1 } );
1545 | fixed_parameters COMMA parameter_array COMMA error
1548 report.Error (231, ((Parameter) $3).Location, "A params parameter must be the last parameter in a formal parameter list");
1550 var pars_list = (List<Parameter>) $1;
1551 pars_list.Add (new ArglistParameter (GetLocation ($3)));
1553 $$ = new ParametersCompiled (pars_list.ToArray (), true);
1555 | arglist_modifier COMMA error
1557 report.Error (257, GetLocation ($1), "An __arglist parameter must be the last parameter in a formal parameter list");
1559 $$ = new ParametersCompiled (new Parameter [] { new ArglistParameter (GetLocation ($1)) }, true);
1561 | fixed_parameters COMMA ARGLIST COMMA error
1563 report.Error (257, GetLocation ($3), "An __arglist parameter must be the last parameter in a formal parameter list");
1565 var pars_list = (List<Parameter>) $1;
1566 pars_list.Add (new ArglistParameter (GetLocation ($3)));
1568 $$ = new ParametersCompiled (pars_list.ToArray (), true);
1572 $$ = new ParametersCompiled (new Parameter[] { (Parameter) $1 } );
1576 $$ = new ParametersCompiled (new Parameter [] { new ArglistParameter (GetLocation ($1)) }, true);
1580 Error_SyntaxError (yyToken);
1581 $$ = ParametersCompiled.EmptyReadOnlyParameters;
1588 parameters_bucket.Clear ();
1589 Parameter p = (Parameter) $1;
1590 parameters_bucket.Add (p);
1592 default_parameter_used = p.HasDefaultValue;
1593 $$ = parameters_bucket;
1595 | fixed_parameters COMMA fixed_parameter
1597 var pars = (List<Parameter>) $1;
1598 Parameter p = (Parameter) $3;
1600 if (p.HasExtensionMethodModifier)
1601 report.Error (1100, p.Location, "The parameter modifier `this' can only be used on the first parameter");
1602 else if (!p.HasDefaultValue && default_parameter_used)
1603 report.Error (1737, p.Location, "Optional parameter cannot precede required parameters");
1605 default_parameter_used |= p.HasDefaultValue;
1608 lbag.AddLocation (p, GetLocation ($2));
1617 opt_parameter_modifier
1619 identifier_inside_body
1621 var lt = (LocatedToken) $4;
1622 $$ = new Parameter ((FullNamedExpression) $3, lt.Value, (Parameter.Modifier) $2, (Attributes) $1, lt.Location);
1625 opt_parameter_modifier
1627 identifier_inside_body OPEN_BRACKET CLOSE_BRACKET
1629 var lt = (LocatedToken) $4;
1630 report.Error (1552, lt.Location, "Array type specifier, [], must appear before parameter name");
1631 $$ = new Parameter ((FullNamedExpression) $3, lt.Value, (Parameter.Modifier) $2, (Attributes) $1, lt.Location);
1633 | attribute_sections error
1635 Error_SyntaxError (yyToken);
1636 Location l = GetLocation ($2);
1637 $$ = new Parameter (null, null, Parameter.Modifier.NONE, (Attributes) $1, l);
1640 opt_parameter_modifier
1644 Error_SyntaxError (yyToken);
1645 Location l = GetLocation ($4);
1646 $$ = new Parameter ((FullNamedExpression) $3, null, (Parameter.Modifier) $2, (Attributes) $1, l);
1649 opt_parameter_modifier
1651 identifier_inside_body
1654 ++lexer.parsing_block;
1658 --lexer.parsing_block;
1659 if (lang_version <= LanguageVersion.V_3) {
1660 FeatureIsNotAvailable (GetLocation ($5), "optional parameter");
1663 Parameter.Modifier mod = (Parameter.Modifier) $2;
1664 if (mod != Parameter.Modifier.NONE) {
1666 case Parameter.Modifier.REF:
1667 case Parameter.Modifier.OUT:
1668 report.Error (1741, GetLocation ($2), "Cannot specify a default value for the `{0}' parameter",
1669 Parameter.GetModifierSignature (mod));
1672 case Parameter.Modifier.This:
1673 report.Error (1743, GetLocation ($2), "Cannot specify a default value for the `{0}' parameter",
1674 Parameter.GetModifierSignature (mod));
1677 throw new NotImplementedException (mod.ToString ());
1680 mod = Parameter.Modifier.NONE;
1683 if ((valid_param_mod & ParameterModifierType.DefaultValue) == 0)
1684 report.Error (1065, GetLocation ($5), "Optional parameter is not valid in this context");
1686 var lt = (LocatedToken) $4;
1687 $$ = new Parameter ((FullNamedExpression) $3, lt.Value, mod, (Attributes) $1, lt.Location);
1688 lbag.AddLocation ($$, GetLocation ($5));
1691 ((Parameter) $$).DefaultValue = new DefaultParameterValueExpression ((Expression) $7);
1695 opt_parameter_modifier
1696 : /* empty */ { $$ = Parameter.Modifier.NONE; }
1697 | parameter_modifiers
1701 : parameter_modifier
1705 | parameter_modifiers parameter_modifier
1707 Parameter.Modifier p2 = (Parameter.Modifier)$2;
1708 Parameter.Modifier mod = (Parameter.Modifier)$1 | p2;
1709 if (((Parameter.Modifier)$1 & p2) == p2) {
1710 Error_DuplicateParameterModifier (lexer.Location, p2);
1712 switch (mod & ~Parameter.Modifier.This) {
1713 case Parameter.Modifier.REF:
1714 report.Error (1101, lexer.Location, "The parameter modifiers `this' and `ref' cannot be used altogether");
1716 case Parameter.Modifier.OUT:
1717 report.Error (1102, lexer.Location, "The parameter modifiers `this' and `out' cannot be used altogether");
1720 report.Error (1108, lexer.Location, "A parameter cannot have specified more than one modifier");
1731 if ((valid_param_mod & ParameterModifierType.Ref) == 0)
1732 Error_ParameterModifierNotValid ("ref", GetLocation ($1));
1734 $$ = Parameter.Modifier.REF;
1738 if ((valid_param_mod & ParameterModifierType.Out) == 0)
1739 Error_ParameterModifierNotValid ("out", GetLocation ($1));
1741 $$ = Parameter.Modifier.OUT;
1745 if ((valid_param_mod & ParameterModifierType.This) == 0)
1746 Error_ParameterModifierNotValid ("this", GetLocation ($1));
1748 if (lang_version <= LanguageVersion.ISO_2)
1749 FeatureIsNotAvailable (GetLocation ($1), "extension methods");
1751 $$ = Parameter.Modifier.This;
1756 : opt_attributes params_modifier type IDENTIFIER
1758 var lt = (LocatedToken) $4;
1759 $$ = new ParamsParameter ((FullNamedExpression) $3, lt.Value, (Attributes) $1, lt.Location);
1761 | opt_attributes params_modifier type IDENTIFIER ASSIGN constant_expression
1763 report.Error (1751, GetLocation ($2), "Cannot specify a default value for a parameter array");
1765 var lt = (LocatedToken) $4;
1766 $$ = new ParamsParameter ((FullNamedExpression) $3, lt.Value, (Attributes) $1, lt.Location);
1768 | opt_attributes params_modifier type error
1770 Error_SyntaxError (yyToken);
1772 $$ = new ParamsParameter ((FullNamedExpression) $3, null, (Attributes) $1, Location.Null);
1779 if ((valid_param_mod & ParameterModifierType.Params) == 0)
1780 report.Error (1670, (GetLocation ($1)), "The `params' modifier is not allowed in current context");
1782 | PARAMS parameter_modifier
1784 Parameter.Modifier mod = (Parameter.Modifier)$2;
1785 if ((mod & Parameter.Modifier.This) != 0) {
1786 report.Error (1104, GetLocation ($1), "The parameter modifiers `this' and `params' cannot be used altogether");
1788 report.Error (1611, GetLocation ($1), "The params parameter cannot be declared as ref or out");
1791 | PARAMS params_modifier
1793 Error_DuplicateParameterModifier (GetLocation ($1), Parameter.Modifier.PARAMS);
1800 if ((valid_param_mod & ParameterModifierType.Arglist) == 0)
1801 report.Error (1669, GetLocation ($1), "__arglist is not valid in this context");
1805 property_declaration
1809 member_declaration_name
1811 lexer.parsing_generic_declaration = false;
1813 tmpComment = Lexer.consume_doc_comment ();
1817 var type = (FullNamedExpression) $3;
1818 current_property = new Property (current_type, type, (Modifiers) $2,
1819 (MemberName) $4, (Attributes) $1);
1821 if (type.Type != null && type.Type.Kind == MemberKind.Void)
1822 report.Error (547, GetLocation ($3), "`{0}': property or indexer cannot have void type", current_property.GetSignatureForError ());
1824 current_type.AddMember (current_property);
1825 lbag.AddMember (current_property, mod_locations, GetLocation ($6));
1827 lexer.PropertyParsing = true;
1829 accessor_declarations
1831 lexer.PropertyParsing = false;
1834 current_property.DocComment = ConsumeStoredComment ();
1838 lbag.AppendToMember (current_property, GetLocation ($10));
1839 lexer.parsing_modifiers = true;
1841 opt_property_initializer
1843 current_property = null;
1848 member_declaration_name
1850 lexer.parsing_generic_declaration = false;
1852 tmpComment = Lexer.consume_doc_comment ();
1853 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
1857 var type = (FullNamedExpression) $3;
1858 var property = new Property (current_type, type, (Modifiers) $2,
1859 (MemberName) $4, (Attributes) $1);
1861 property.Get = new Property.GetMethod (property, Modifiers.COMPILER_GENERATED, null, property.Location);
1862 property.Get.Block = (ToplevelBlock) $6;
1864 if (current_container.Kind == MemberKind.Interface) {
1865 report.Error (531, property.Get.Block.StartLocation,
1866 "`{0}': interface members cannot have a definition", property.GetSignatureForError ());
1869 if (type.Type != null && type.Type.Kind == MemberKind.Void)
1870 report.Error (547, GetLocation ($3), "`{0}': property or indexer cannot have void type", property.GetSignatureForError ());
1873 property.DocComment = ConsumeStoredComment ();
1875 current_type.AddMember (property);
1877 current_local_parameters = null;
1881 opt_property_initializer
1885 ++lexer.parsing_block;
1886 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
1887 start_block (GetLocation ($1));
1889 property_initializer SEMICOLON
1891 --lexer.parsing_block;
1892 ((Property)current_property).Initializer = (Expression) $3;
1893 lbag.AppendToMember (current_property, GetLocation ($1), GetLocation ($4));
1894 end_block (GetLocation ($4));
1895 current_local_parameters = null;
1898 Lexer.doc_state = XmlCommentState.Allowed;
1902 property_initializer
1908 : opt_attributes opt_modifiers
1909 member_type indexer_declaration_name OPEN_BRACKET
1911 valid_param_mod = ParameterModifierType.Params | ParameterModifierType.DefaultValue;
1913 opt_formal_parameter_list CLOSE_BRACKET
1915 valid_param_mod = 0;
1916 var type = (FullNamedExpression) $3;
1917 Indexer indexer = new Indexer (current_type, type, (MemberName) $4, (Modifiers) $2, (ParametersCompiled) $7, (Attributes) $1);
1919 current_property = indexer;
1921 current_type.AddIndexer (indexer);
1922 lbag.AddMember (current_property, mod_locations, GetLocation ($5), GetLocation ($8));
1924 if (type.Type != null && type.Type.Kind == MemberKind.Void)
1925 report.Error (620, GetLocation ($3), "`{0}': indexer return type cannot be `void'", indexer.GetSignatureForError ());
1927 if (indexer.ParameterInfo.IsEmpty) {
1928 report.Error (1551, GetLocation ($5), "Indexers must have at least one parameter");
1932 tmpComment = Lexer.consume_doc_comment ();
1933 Lexer.doc_state = XmlCommentState.Allowed;
1936 lexer.PropertyParsing = true;
1937 current_local_parameters = (ParametersCompiled) $7;
1941 lexer.PropertyParsing = false;
1942 current_local_parameters = null;
1944 if (current_property.AccessorFirst != null && current_property.AccessorFirst.Block == null)
1945 ((Indexer) current_property).ParameterInfo.CheckParameters (current_property);
1948 current_property.DocComment = ConsumeStoredComment ();
1950 current_property = null;
1955 : OPEN_BRACE accessor_declarations CLOSE_BRACE
1957 lbag.AppendToMember (current_property, GetLocation ($1), GetLocation ($3));
1961 current_property.Get = new Indexer.GetIndexerMethod (current_property, Modifiers.COMPILER_GENERATED, current_local_parameters, null, current_property.Location);
1962 current_property.Get.Block = (ToplevelBlock) $1;
1966 accessor_declarations
1967 : get_accessor_declaration
1968 | get_accessor_declaration accessor_declarations
1969 | set_accessor_declaration
1970 | set_accessor_declaration accessor_declarations
1973 if (yyToken == Token.CLOSE_BRACE) {
1974 report.Error (548, lexer.Location, "`{0}': property or indexer must have at least one accessor", current_property.GetSignatureForError ());
1976 if (yyToken == Token.SEMICOLON)
1977 report.Error (1597, lexer.Location, "Semicolon after method or accessor block is not valid");
1979 report.Error (1014, GetLocation ($1), "A get or set accessor expected");
1984 get_accessor_declaration
1985 : opt_attributes opt_modifiers GET
1987 if ($2 != ModifierNone && lang_version == LanguageVersion.ISO_1) {
1988 FeatureIsNotAvailable (GetLocation ($2), "access modifiers on properties");
1991 if (current_property.Get != null) {
1992 report.Error (1007, GetLocation ($3), "Property accessor already defined");
1995 if (current_property is Indexer) {
1996 current_property.Get = new Indexer.GetIndexerMethod (current_property, (Modifiers) $2, ((Indexer)current_property).ParameterInfo.Clone (),
1997 (Attributes) $1, GetLocation ($3));
1999 current_property.Get = new Property.GetMethod (current_property,
2000 (Modifiers) $2, (Attributes) $1, GetLocation ($3));
2003 current_local_parameters = current_property.Get.ParameterInfo;
2004 lbag.AddMember (current_property.Get, mod_locations);
2005 lexer.PropertyParsing = false;
2010 current_property.Get.Block = (ToplevelBlock) $5;
2012 if (current_container.Kind == MemberKind.Interface) {
2013 report.Error (531, current_property.Get.Block.StartLocation,
2014 "`{0}': interface members cannot have a definition", current_property.Get.GetSignatureForError ());
2018 current_local_parameters = null;
2019 lexer.PropertyParsing = true;
2022 if (Lexer.doc_state == XmlCommentState.Error)
2023 Lexer.doc_state = XmlCommentState.NotAllowed;
2027 set_accessor_declaration
2028 : opt_attributes opt_modifiers SET
2030 if ($2 != ModifierNone && lang_version == LanguageVersion.ISO_1) {
2031 FeatureIsNotAvailable (GetLocation ($2), "access modifiers on properties");
2034 if (current_property.Set != null) {
2035 report.Error (1007, GetLocation ($3), "Property accessor already defined");
2038 if (current_property is Indexer) {
2039 current_property.Set = new Indexer.SetIndexerMethod (current_property, (Modifiers) $2,
2040 ParametersCompiled.MergeGenerated (compiler,
2041 ((Indexer)current_property).ParameterInfo, true, new Parameter (
2042 current_property.TypeExpression, "value", Parameter.Modifier.NONE, null, GetLocation ($3)),
2044 (Attributes) $1, GetLocation ($3));
2046 current_property.Set = new Property.SetMethod (current_property, (Modifiers) $2,
2047 ParametersCompiled.CreateImplicitParameter (current_property.TypeExpression, GetLocation ($3)),
2048 (Attributes) $1, GetLocation ($3));
2051 current_local_parameters = current_property.Set.ParameterInfo;
2052 lbag.AddMember (current_property.Set, mod_locations);
2053 lexer.PropertyParsing = false;
2058 current_property.Set.Block = (ToplevelBlock) $5;
2060 if (current_container.Kind == MemberKind.Interface) {
2061 report.Error (531, current_property.Set.Block.StartLocation,
2062 "`{0}': interface members cannot have a definition", current_property.Set.GetSignatureForError ());
2066 current_local_parameters = null;
2067 lexer.PropertyParsing = true;
2070 && Lexer.doc_state == XmlCommentState.Error)
2071 Lexer.doc_state = XmlCommentState.NotAllowed;
2084 Error_SyntaxError (1043, yyToken, "Invalid accessor body");
2089 interface_declaration
2096 type_declaration_name
2098 lexer.ConstraintsParsing = true;
2099 push_current_container (new Interface (current_container, (MemberName) $6, (Modifiers) $2, (Attributes) $1), $3);
2100 lbag.AddMember (current_container, mod_locations, GetLocation ($4));
2103 opt_type_parameter_constraints_clauses
2105 lexer.ConstraintsParsing = false;
2108 current_container.SetConstraints ((List<Constraints>) $9);
2111 current_container.PartialContainer.DocComment = Lexer.consume_doc_comment ();
2112 Lexer.doc_state = XmlCommentState.Allowed;
2115 lexer.parsing_modifiers = true;
2117 OPEN_BRACE opt_interface_member_declarations CLOSE_BRACE
2119 --lexer.parsing_declaration;
2121 Lexer.doc_state = XmlCommentState.Allowed;
2126 lbag.AppendToMember (current_container, GetLocation ($11), GetLocation ($13));
2128 lbag.AppendToMember (current_container, GetLocation ($11), GetLocation ($13), GetLocation ($15));
2130 $$ = pop_current_class ();
2132 | opt_attributes opt_modifiers opt_partial INTERFACE error
2134 Error_SyntaxError (yyToken);
2138 opt_interface_member_declarations
2140 | interface_member_declarations
2143 interface_member_declarations
2144 : interface_member_declaration
2146 lexer.parsing_modifiers = true;
2147 lexer.parsing_block = 0;
2149 | interface_member_declarations interface_member_declaration
2151 lexer.parsing_modifiers = true;
2152 lexer.parsing_block = 0;
2156 interface_member_declaration
2157 : constant_declaration
2159 report.Error (525, GetLocation ($1), "Interfaces cannot contain fields or constants");
2163 report.Error (525, GetLocation ($1), "Interfaces cannot contain fields or constants");
2165 | method_declaration
2166 | property_declaration
2168 | indexer_declaration
2169 | operator_declaration
2171 report.Error (567, GetLocation ($1), "Interfaces cannot contain operators");
2173 | constructor_declaration
2175 report.Error (526, GetLocation ($1), "Interfaces cannot contain contructors");
2179 report.Error (524, GetLocation ($1), "Interfaces cannot declare classes, structs, interfaces, delegates, or enumerations");
2183 operator_declaration
2184 : opt_attributes opt_modifiers operator_declarator
2187 method_body_expression_block
2189 OperatorDeclaration decl = (OperatorDeclaration) $3;
2191 Operator op = new Operator (
2192 current_type, decl.optype, decl.ret_type, (Modifiers) $2,
2193 current_local_parameters,
2194 (ToplevelBlock) $5, (Attributes) $1, decl.location);
2196 if (op.Block == null)
2197 op.ParameterInfo.CheckParameters (op);
2200 op.DocComment = tmpComment;
2201 Lexer.doc_state = XmlCommentState.Allowed;
2204 // Note again, checking is done in semantic analysis
2205 current_type.AddOperator (op);
2207 lbag.AddMember (op, mod_locations, lbag.GetLocations (decl));
2210 current_local_parameters = null;
2215 : type_expression_or_array
2218 report.Error (590, GetLocation ($1), "User-defined operators cannot return void");
2219 $$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
2224 : operator_type OPERATOR overloadable_operator OPEN_PARENS
2226 valid_param_mod = ParameterModifierType.DefaultValue;
2227 if ((Operator.OpType) $3 == Operator.OpType.Is)
2228 valid_param_mod |= ParameterModifierType.Out;
2230 opt_formal_parameter_list CLOSE_PARENS
2232 valid_param_mod = 0;
2234 Location loc = GetLocation ($2);
2235 Operator.OpType op = (Operator.OpType) $3;
2236 current_local_parameters = (ParametersCompiled)$6;
2238 int p_count = current_local_parameters.Count;
2240 if (op == Operator.OpType.Addition)
2241 op = Operator.OpType.UnaryPlus;
2242 else if (op == Operator.OpType.Subtraction)
2243 op = Operator.OpType.UnaryNegation;
2246 if (IsUnaryOperator (op)) {
2248 report.Error (1020, loc, "Overloadable binary operator expected");
2249 } else if (p_count != 1) {
2250 report.Error (1535, loc, "Overloaded unary operator `{0}' takes one parameter",
2251 Operator.GetName (op));
2253 } else if (op == Operator.OpType.Is) {
2254 // TODO: Special checks for is operator
2257 report.Error (1019, loc, "Overloadable unary operator expected");
2258 } else if (p_count != 2) {
2259 report.Error (1534, loc, "Overloaded binary operator `{0}' takes two parameters",
2260 Operator.GetName (op));
2265 tmpComment = Lexer.consume_doc_comment ();
2266 Lexer.doc_state = XmlCommentState.NotAllowed;
2269 $$ = new OperatorDeclaration (op, (FullNamedExpression) $1, loc);
2270 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($3), GetLocation ($4), GetLocation ($7));
2272 | conversion_operator_declarator
2275 overloadable_operator
2277 : BANG { $$ = Operator.OpType.LogicalNot; }
2278 | TILDE { $$ = Operator.OpType.OnesComplement; }
2279 | OP_INC { $$ = Operator.OpType.Increment; }
2280 | OP_DEC { $$ = Operator.OpType.Decrement; }
2281 | TRUE { $$ = Operator.OpType.True; }
2282 | FALSE { $$ = Operator.OpType.False; }
2283 // Unary and binary:
2284 | PLUS { $$ = Operator.OpType.Addition; }
2285 | MINUS { $$ = Operator.OpType.Subtraction; }
2287 | STAR { $$ = Operator.OpType.Multiply; }
2288 | DIV { $$ = Operator.OpType.Division; }
2289 | PERCENT { $$ = Operator.OpType.Modulus; }
2290 | BITWISE_AND { $$ = Operator.OpType.BitwiseAnd; }
2291 | BITWISE_OR { $$ = Operator.OpType.BitwiseOr; }
2292 | CARRET { $$ = Operator.OpType.ExclusiveOr; }
2293 | OP_SHIFT_LEFT { $$ = Operator.OpType.LeftShift; }
2294 | OP_SHIFT_RIGHT { $$ = Operator.OpType.RightShift; }
2295 | OP_EQ { $$ = Operator.OpType.Equality; }
2296 | OP_NE { $$ = Operator.OpType.Inequality; }
2297 | OP_GT { $$ = Operator.OpType.GreaterThan; }
2298 | OP_LT { $$ = Operator.OpType.LessThan; }
2299 | OP_GE { $$ = Operator.OpType.GreaterThanOrEqual; }
2300 | OP_LE { $$ = Operator.OpType.LessThanOrEqual; }
2303 if (lang_version != LanguageVersion.Experimental)
2304 FeatureIsNotAvailable (GetLocation ($1), "is user operator");
2306 $$ = Operator.OpType.Is;
2310 conversion_operator_declarator
2311 : IMPLICIT OPERATOR type OPEN_PARENS
2313 valid_param_mod = ParameterModifierType.DefaultValue;
2315 opt_formal_parameter_list CLOSE_PARENS
2317 valid_param_mod = 0;
2319 Location loc = GetLocation ($2);
2320 current_local_parameters = (ParametersCompiled)$6;
2322 if (current_local_parameters.Count != 1) {
2323 report.Error (1535, loc, "Overloaded unary operator `implicit' takes one parameter");
2327 tmpComment = Lexer.consume_doc_comment ();
2328 Lexer.doc_state = XmlCommentState.NotAllowed;
2331 $$ = new OperatorDeclaration (Operator.OpType.Implicit, (FullNamedExpression) $3, loc);
2332 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($2), GetLocation ($4), GetLocation ($7));
2334 | EXPLICIT OPERATOR type OPEN_PARENS
2336 valid_param_mod = ParameterModifierType.DefaultValue;
2338 opt_formal_parameter_list CLOSE_PARENS
2340 valid_param_mod = 0;
2342 Location loc = GetLocation ($2);
2343 current_local_parameters = (ParametersCompiled)$6;
2345 if (current_local_parameters.Count != 1) {
2346 report.Error (1535, loc, "Overloaded unary operator `explicit' takes one parameter");
2350 tmpComment = Lexer.consume_doc_comment ();
2351 Lexer.doc_state = XmlCommentState.NotAllowed;
2354 $$ = new OperatorDeclaration (Operator.OpType.Explicit, (FullNamedExpression) $3, loc);
2355 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($2), GetLocation ($4), GetLocation ($7));
2359 Error_SyntaxError (yyToken);
2360 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
2361 $$ = new OperatorDeclaration (Operator.OpType.Implicit, null, GetLocation ($1));
2365 Error_SyntaxError (yyToken);
2366 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
2367 $$ = new OperatorDeclaration (Operator.OpType.Explicit, null, GetLocation ($1));
2371 constructor_declaration
2372 : constructor_declarator
2375 Constructor c = (Constructor) $1;
2376 c.Block = (ToplevelBlock) $2;
2379 c.DocComment = ConsumeStoredComment ();
2381 current_local_parameters = null;
2383 Lexer.doc_state = XmlCommentState.Allowed;
2387 constructor_declarator
2393 tmpComment = Lexer.consume_doc_comment ();
2394 Lexer.doc_state = XmlCommentState.Allowed;
2397 valid_param_mod = ParameterModifierType.All;
2399 OPEN_PARENS opt_formal_parameter_list CLOSE_PARENS
2401 valid_param_mod = 0;
2402 current_local_parameters = (ParametersCompiled) $6;
2404 var lt = (LocatedToken) $3;
2405 var mods = (Modifiers) $2;
2406 var c = new Constructor (current_type, lt.Value, mods, (Attributes) $1, current_local_parameters, lt.Location);
2408 if (lt.Value != current_container.MemberName.Name) {
2409 report.Error (1520, c.Location, "Class, struct, or interface method must have a return type");
2410 } else if ((mods & Modifiers.STATIC) != 0) {
2411 if (!current_local_parameters.IsEmpty) {
2412 report.Error (132, c.Location, "`{0}': The static constructor must be parameterless",
2413 c.GetSignatureForError ());
2416 if ((mods & Modifiers.AccessibilityMask) != 0){
2417 report.Error (515, c.Location,
2418 "`{0}': static constructor cannot have an access modifier",
2419 c.GetSignatureForError ());
2422 if (current_type.Kind == MemberKind.Struct && current_local_parameters.IsEmpty) {
2423 report.Error (568, c.Location, "Structs cannot contain explicit parameterless constructors");
2427 current_type.AddConstructor (c);
2428 lbag.AddMember (c, mod_locations, GetLocation ($5), GetLocation ($7));
2432 // start block here, so possible anonymous methods inside
2433 // constructor initializer can get correct parent block
2435 start_block (lexer.Location);
2437 opt_constructor_initializer
2440 var c = (Constructor) $8;
2441 c.Initializer = (ConstructorInitializer) $9;
2444 report.Error (514, c.Location,
2445 "`{0}': static constructor cannot have an explicit `this' or `base' constructor call",
2446 c.GetSignatureForError ());
2456 | SEMICOLON { current_block = null; $$ = null; }
2459 opt_constructor_initializer
2461 | constructor_initializer
2464 constructor_initializer
2465 : COLON BASE OPEN_PARENS
2467 ++lexer.parsing_block;
2469 opt_argument_list CLOSE_PARENS
2471 --lexer.parsing_block;
2472 $$ = new ConstructorBaseInitializer ((Arguments) $5, GetLocation ($2));
2473 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3), GetLocation ($6));
2475 | COLON THIS OPEN_PARENS
2477 ++lexer.parsing_block;
2479 opt_argument_list CLOSE_PARENS
2481 --lexer.parsing_block;
2482 $$ = new ConstructorThisInitializer ((Arguments) $5, GetLocation ($2));
2483 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3), GetLocation ($6));
2487 Error_SyntaxError (yyToken);
2488 $$ = new ConstructorThisInitializer (null, GetLocation ($2));
2489 lbag.AddLocation ($$, GetLocation ($1));
2493 Error_SyntaxError (yyToken);
2498 destructor_declaration
2499 : opt_attributes opt_modifiers TILDE
2502 tmpComment = Lexer.consume_doc_comment ();
2503 Lexer.doc_state = XmlCommentState.NotAllowed;
2506 current_local_parameters = ParametersCompiled.EmptyReadOnlyParameters;
2508 IDENTIFIER OPEN_PARENS CLOSE_PARENS method_body
2510 var lt = (LocatedToken) $5;
2511 if (lt.Value != current_container.MemberName.Name){
2512 report.Error (574, lt.Location, "Name of destructor must match name of class");
2513 } else if (current_container.Kind != MemberKind.Class){
2514 report.Error (575, lt.Location, "Only class types can contain destructor");
2517 Destructor d = new Destructor (current_type, (Modifiers) $2,
2518 ParametersCompiled.EmptyReadOnlyParameters, (Attributes) $1, lt.Location);
2520 d.DocComment = ConsumeStoredComment ();
2522 d.Block = (ToplevelBlock) $8;
2523 current_type.AddMember (d);
2524 lbag.AddMember (d, mod_locations, GetLocation ($3), GetLocation ($6), GetLocation ($7));
2526 current_local_parameters = null;
2533 EVENT type member_declaration_name
2535 current_event_field = new EventField (current_type, (FullNamedExpression) $4, (Modifiers) $2, (MemberName) $5, (Attributes) $1);
2536 current_type.AddMember (current_event_field);
2538 if (current_event_field.MemberName.ExplicitInterface != null) {
2539 report.Error (71, current_event_field.Location, "`{0}': An explicit interface implementation of an event must use property syntax",
2540 current_event_field.GetSignatureForError ());
2543 $$ = current_event_field;
2545 opt_event_initializer
2546 opt_event_declarators
2550 current_event_field.DocComment = Lexer.consume_doc_comment ();
2551 Lexer.doc_state = XmlCommentState.Allowed;
2554 lbag.AddMember (current_event_field, mod_locations, GetLocation ($3), GetLocation ($9));
2555 current_event_field = null;
2559 EVENT type member_declaration_name
2562 current_event = new EventProperty (current_type, (FullNamedExpression) $4, (Modifiers) $2, (MemberName) $5, (Attributes) $1);
2563 current_type.AddMember (current_event);
2564 lbag.AddMember (current_event, mod_locations, GetLocation ($3), GetLocation ($6));
2566 lexer.EventParsing = true;
2568 event_accessor_declarations
2570 if (current_container.Kind == MemberKind.Interface)
2571 report.Error (69, GetLocation ($6), "Event in interface cannot have add or remove accessors");
2573 lexer.EventParsing = false;
2578 current_event.DocComment = Lexer.consume_doc_comment ();
2579 Lexer.doc_state = XmlCommentState.Allowed;
2582 lbag.AppendToMember (current_event, GetLocation ($9));
2583 current_event = null;
2584 current_local_parameters = null;
2590 Error_SyntaxError (yyToken);
2592 current_type.AddMember (new EventField (current_type, (FullNamedExpression) $4, (Modifiers) $2, MemberName.Null, (Attributes) $1));
2596 opt_event_initializer
2600 ++lexer.parsing_block;
2602 event_variable_initializer
2604 --lexer.parsing_block;
2605 current_event_field.Initializer = (Expression) $3;
2609 opt_event_declarators
2617 current_event_field.AddDeclarator ((FieldDeclarator) $1);
2619 | event_declarators event_declarator
2621 current_event_field.AddDeclarator ((FieldDeclarator) $2);
2628 var lt = (LocatedToken) $2;
2629 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), null);
2630 lbag.AddLocation ($$, GetLocation ($1));
2632 | COMMA IDENTIFIER ASSIGN
2634 ++lexer.parsing_block;
2636 event_variable_initializer
2638 --lexer.parsing_block;
2639 var lt = (LocatedToken) $2;
2640 $$ = new FieldDeclarator (new SimpleMemberName (lt.Value, lt.Location), (Expression) $5);
2641 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
2645 event_variable_initializer
2647 if (current_container.Kind == MemberKind.Interface) {
2648 report.Error (68, lexer.Location, "`{0}': event in interface cannot have an initializer",
2649 current_event_field.GetSignatureForError ());
2652 if ((current_event_field.ModFlags & Modifiers.ABSTRACT) != 0) {
2653 report.Error (74, lexer.Location, "`{0}': abstract event cannot have an initializer",
2654 current_event_field.GetSignatureForError ());
2657 variable_initializer
2663 event_accessor_declarations
2664 : add_accessor_declaration remove_accessor_declaration
2665 | remove_accessor_declaration add_accessor_declaration
2666 | add_accessor_declaration
2668 report.Error (65, lexer.Location, "`{0}': event property must have both add and remove accessors",
2669 current_event.GetSignatureForError ());
2671 | remove_accessor_declaration
2673 report.Error (65, lexer.Location, "`{0}': event property must have both add and remove accessors",
2674 current_event.GetSignatureForError ());
2678 report.Error (1055, GetLocation ($1), "An add or remove accessor expected");
2683 add_accessor_declaration
2684 : opt_attributes opt_modifiers ADD
2686 if ($2 != ModifierNone) {
2687 report.Error (1609, GetLocation ($2), "Modifiers cannot be placed on event accessor declarations");
2690 current_event.Add = new EventProperty.AddDelegateMethod (current_event, (Attributes) $1, GetLocation ($3));
2691 current_local_parameters = current_event.Add.ParameterInfo;
2693 lbag.AddMember (current_event.Add, mod_locations);
2694 lexer.EventParsing = false;
2696 event_accessor_block
2698 lexer.EventParsing = true;
2700 current_event.Add.Block = (ToplevelBlock) $5;
2702 if (current_container.Kind == MemberKind.Interface) {
2703 report.Error (531, current_event.Add.Block.StartLocation,
2704 "`{0}': interface members cannot have a definition", current_event.Add.GetSignatureForError ());
2707 current_local_parameters = null;
2711 remove_accessor_declaration
2712 : opt_attributes opt_modifiers REMOVE
2714 if ($2 != ModifierNone) {
2715 report.Error (1609, GetLocation ($2), "Modifiers cannot be placed on event accessor declarations");
2718 current_event.Remove = new EventProperty.RemoveDelegateMethod (current_event, (Attributes) $1, GetLocation ($3));
2719 current_local_parameters = current_event.Remove.ParameterInfo;
2721 lbag.AddMember (current_event.Remove, mod_locations);
2722 lexer.EventParsing = false;
2724 event_accessor_block
2726 lexer.EventParsing = true;
2728 current_event.Remove.Block = (ToplevelBlock) $5;
2730 if (current_container.Kind == MemberKind.Interface) {
2731 report.Error (531, current_event.Remove.Block.StartLocation,
2732 "`{0}': interface members cannot have a definition", current_event.Remove.GetSignatureForError ());
2735 current_local_parameters = null;
2739 event_accessor_block
2742 report.Error (73, lexer.Location, "An add or remove accessor must have a body");
2748 attributes_without_members
2749 : attribute_sections CLOSE_BRACE
2751 current_type.UnattachedAttributes = (Attributes) $1;
2752 report.Error (1519, GetLocation ($1), "An attribute is missing member declaration");
2753 lexer.putback ('}');
2757 // For full ast try to recover incomplete ambiguous member
2758 // declaration in form on class X { public int }
2760 : opt_attributes opt_modifiers member_type CLOSE_BRACE
2762 report.Error (1519, lexer.Location, "Unexpected symbol `}' in class, struct, or interface member declaration");
2764 lexer.putback ('}');
2766 lexer.parsing_generic_declaration = false;
2767 FullNamedExpression type = (FullNamedExpression) $3;
2768 current_field = new Field (current_type, type, (Modifiers) $2, MemberName.Null, (Attributes) $1);
2769 current_type.AddField (current_field);
2777 ENUM type_declaration_name
2781 enumTypeComment = Lexer.consume_doc_comment ();
2786 Lexer.doc_state = XmlCommentState.Allowed;
2788 MemberName name = (MemberName) $4;
2789 if (name.IsGeneric) {
2790 report.Error (1675, name.Location, "Enums cannot have type parameters");
2793 push_current_container (new Enum (current_container, (FullNamedExpression) $5, (Modifiers) $2, name, (Attributes) $1), null);
2795 opt_enum_member_declarations
2797 lexer.parsing_modifiers = true;
2799 // here will be evaluated after CLOSE_BLACE is consumed.
2801 Lexer.doc_state = XmlCommentState.Allowed;
2803 CLOSE_BRACE opt_semicolon
2806 current_container.DocComment = enumTypeComment;
2808 --lexer.parsing_declaration;
2811 // em.DocComment = ev.DocComment;
2813 lbag.AddMember (current_container, mod_locations, GetLocation ($3), GetLocation ($7), GetLocation ($11));
2814 $$ = pop_current_class ();
2826 Error_TypeExpected (GetLocation ($1));
2831 opt_enum_member_declarations
2833 | enum_member_declarations
2834 | enum_member_declarations COMMA
2836 lbag.AddLocation ($1, GetLocation ($2));
2840 enum_member_declarations
2841 : enum_member_declaration
2842 | enum_member_declarations COMMA enum_member_declaration
2844 lbag.AddLocation ($1, GetLocation ($2));
2849 enum_member_declaration
2850 : opt_attributes IDENTIFIER
2852 var lt = (LocatedToken) $2;
2853 var em = new EnumMember ((Enum) current_type, new MemberName (lt.Value, lt.Location), (Attributes) $1);
2854 ((Enum) current_type).AddEnumMember (em);
2857 em.DocComment = Lexer.consume_doc_comment ();
2858 Lexer.doc_state = XmlCommentState.Allowed;
2863 | opt_attributes IDENTIFIER
2865 ++lexer.parsing_block;
2867 tmpComment = Lexer.consume_doc_comment ();
2868 Lexer.doc_state = XmlCommentState.NotAllowed;
2871 ASSIGN constant_expression
2873 --lexer.parsing_block;
2875 var lt = (LocatedToken) $2;
2876 var em = new EnumMember ((Enum) current_type, new MemberName (lt.Value, lt.Location), (Attributes) $1);
2877 em.Initializer = new ConstInitializer (em, (Expression) $5, GetLocation ($4));
2878 ((Enum) current_type).AddEnumMember (em);
2881 em.DocComment = ConsumeStoredComment ();
2885 | opt_attributes IDENTIFIER error
2887 Error_SyntaxError (yyToken);
2889 var lt = (LocatedToken) $2;
2890 var em = new EnumMember ((Enum) current_type, new MemberName (lt.Value, lt.Location), (Attributes) $1);
2891 ((Enum) current_type).AddEnumMember (em);
2894 em.DocComment = Lexer.consume_doc_comment ();
2895 Lexer.doc_state = XmlCommentState.Allowed;
2900 | attributes_without_members
2903 delegate_declaration
2907 member_type type_declaration_name
2910 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out | ParameterModifierType.Params | ParameterModifierType.DefaultValue;
2912 opt_formal_parameter_list CLOSE_PARENS
2914 valid_param_mod = 0;
2916 ParametersCompiled p = (ParametersCompiled) $8;
2918 Delegate del = new Delegate (current_container, (FullNamedExpression) $4, (Modifiers) $2, (MemberName) $5, p, (Attributes) $1);
2920 p.CheckParameters (del);
2922 current_container.AddTypeContainer (del);
2924 current_delegate = del;
2925 lexer.ConstraintsParsing = true;
2927 opt_type_parameter_constraints_clauses
2929 lexer.ConstraintsParsing = false;
2934 current_delegate.DocComment = Lexer.consume_doc_comment ();
2935 Lexer.doc_state = XmlCommentState.Allowed;
2939 current_delegate.SetConstraints ((List<Constraints>) $11);
2940 lbag.AddMember (current_delegate, mod_locations, GetLocation ($3), GetLocation ($6), GetLocation ($9), GetLocation ($13));
2942 $$ = current_delegate;
2944 current_delegate = null;
2952 if (lang_version < LanguageVersion.ISO_2)
2953 FeatureIsNotAvailable (GetLocation ($1), "nullable types");
2955 $$ = ComposedTypeSpecifier.CreateNullable (GetLocation ($1));
2959 namespace_or_type_expr
2961 | qualified_alias_member IDENTIFIER opt_type_argument_list
2963 var lt1 = (LocatedToken) $1;
2964 var lt2 = (LocatedToken) $2;
2966 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (TypeArguments) $3, lt1.Location);
2967 lbag.AddLocation ($$, GetLocation ($2));
2969 | qualified_alias_member IDENTIFIER generic_dimension
2971 var lt1 = (LocatedToken) $1;
2972 var lt2 = (LocatedToken) $2;
2974 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) $3, lt1.Location);
2975 lbag.AddLocation ($$, GetLocation ($2));
2981 | namespace_or_type_expr DOT IDENTIFIER opt_type_argument_list
2983 var lt = (LocatedToken) $3;
2984 $$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
2985 lbag.AddLocation ($$, GetLocation ($2));
2987 | namespace_or_type_expr DOT IDENTIFIER generic_dimension
2989 var lt = (LocatedToken) $3;
2990 $$ = new MemberAccess ((Expression) $1, lt.Value, (int) $4, lt.Location);
2991 lbag.AddLocation ($$, GetLocation ($2));
2996 : IDENTIFIER opt_type_argument_list
2998 var lt = (LocatedToken) $1;
2999 $$ = new SimpleName (lt.Value, (TypeArguments)$2, lt.Location);
3001 | IDENTIFIER generic_dimension
3003 var lt = (LocatedToken) $1;
3004 $$ = new SimpleName (lt.Value, (int) $2, lt.Location);
3009 // Generics arguments (any type, without attributes)
3011 opt_type_argument_list
3013 | OP_GENERICS_LT type_arguments OP_GENERICS_GT
3015 if (lang_version < LanguageVersion.ISO_2)
3016 FeatureIsNotAvailable (GetLocation ($1), "generics");
3020 | OP_GENERICS_LT error
3022 Error_TypeExpected (lexer.Location);
3023 $$ = new TypeArguments ();
3030 TypeArguments type_args = new TypeArguments ();
3031 type_args.Add ((FullNamedExpression) $1);
3034 | type_arguments COMMA type
3036 TypeArguments type_args = (TypeArguments) $1;
3037 type_args.Add ((FullNamedExpression) $3);
3043 // Generics parameters (identifiers only, with attributes), used in type or method declarations
3045 type_declaration_name
3048 lexer.parsing_generic_declaration = true;
3050 opt_type_parameter_list
3052 lexer.parsing_generic_declaration = false;
3053 var lt = (LocatedToken) $1;
3054 $$ = new MemberName (lt.Value, (TypeParameters)$3, lt.Location);
3058 member_declaration_name
3059 : method_declaration_name
3061 MemberName mn = (MemberName)$1;
3062 if (mn.TypeParameters != null)
3063 syntax_error (mn.Location, string.Format ("Member `{0}' cannot declare type arguments",
3064 mn.GetSignatureForError ()));
3068 method_declaration_name
3069 : type_declaration_name
3070 | explicit_interface IDENTIFIER opt_type_parameter_list
3072 lexer.parsing_generic_declaration = false;
3073 var lt = (LocatedToken) $2;
3074 $$ = new MemberName (lt.Value, (TypeParameters) $3, (ATypeNameExpression) $1, lt.Location);
3078 indexer_declaration_name
3081 lexer.parsing_generic_declaration = false;
3082 $$ = new MemberName (TypeDefinition.DefaultIndexerName, GetLocation ($1));
3084 | explicit_interface THIS
3086 lexer.parsing_generic_declaration = false;
3087 $$ = new MemberName (TypeDefinition.DefaultIndexerName, null, (ATypeNameExpression) $1, GetLocation ($2));
3092 : IDENTIFIER opt_type_argument_list DOT
3094 var lt = (LocatedToken) $1;
3095 $$ = new SimpleName (lt.Value, (TypeArguments) $2, lt.Location);
3096 lbag.AddLocation ($$, GetLocation ($3));
3098 | qualified_alias_member IDENTIFIER opt_type_argument_list DOT
3100 var lt1 = (LocatedToken) $1;
3101 var lt2 = (LocatedToken) $2;
3103 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (TypeArguments) $3, lt1.Location);
3104 lbag.AddLocation ($$, GetLocation ($4));
3106 | explicit_interface IDENTIFIER opt_type_argument_list DOT
3108 var lt = (LocatedToken) $2;
3109 $$ = new MemberAccess ((ATypeNameExpression) $1, lt.Value, (TypeArguments) $3, lt.Location);
3110 lbag.AddLocation ($$, GetLocation ($4));
3114 opt_type_parameter_list
3116 | OP_GENERICS_LT_DECL type_parameters OP_GENERICS_GT
3118 if (lang_version < LanguageVersion.ISO_2)
3119 FeatureIsNotAvailable (GetLocation ($1), "generics");
3122 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
3129 var tparams = new TypeParameters ();
3130 tparams.Add ((TypeParameter)$1);
3133 | type_parameters COMMA type_parameter
3135 var tparams = (TypeParameters) $1;
3136 tparams.Add ((TypeParameter)$3);
3138 lbag.AddLocation ($3, GetLocation ($3));
3143 : opt_attributes opt_type_parameter_variance IDENTIFIER
3145 var lt = (LocatedToken)$3;
3146 $$ = new TypeParameter (new MemberName (lt.Value, lt.Location), (Attributes)$1, (VarianceDecl) $2);
3150 if (GetTokenName (yyToken) == "type")
3151 report.Error (81, GetLocation ($1), "Type parameter declaration must be an identifier not a type");
3153 Error_SyntaxError (yyToken);
3155 $$ = new TypeParameter (MemberName.Null, null, null);
3160 // All types where void is allowed
3163 : type_expression_or_array
3166 $$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
3173 lexer.parsing_generic_declaration = true;
3178 // A type which does not allow `void' to be used
3181 : type_expression_or_array
3191 : type_expression_or_array
3194 report.Error (1536, GetLocation ($1), "Invalid parameter type `void'");
3195 $$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
3199 type_expression_or_array
3201 | type_expression rank_specifiers
3203 $$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
3208 : namespace_or_type_expr opt_nullable
3211 $$ = new ComposedCast ((ATypeNameExpression) $1, (ComposedTypeSpecifier) $2);
3213 var sn = $1 as SimpleName;
3214 if (sn != null && sn.Name == "var")
3215 $$ = new VarExpr (sn.Location);
3220 | namespace_or_type_expr pointer_stars
3222 $$ = new ComposedCast ((ATypeNameExpression) $1, (ComposedTypeSpecifier) $2);
3224 | builtin_type_expression
3230 Expression.Error_VoidInvalidInTheContext (GetLocation ($1), report);
3231 $$ = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
3235 builtin_type_expression
3236 : builtin_types opt_nullable
3239 $$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
3241 | builtin_types pointer_stars
3243 $$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
3245 | VOID pointer_stars
3247 $$ = new ComposedCast (new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1)), (ComposedTypeSpecifier) $2);
3254 var types = new List<FullNamedExpression> (2);
3255 types.Add ((FullNamedExpression) $1);
3258 | type_list COMMA base_type_name
3260 var types = (List<FullNamedExpression>) $1;
3261 types.Add ((FullNamedExpression) $3);
3269 if ($1 is ComposedCast) {
3270 report.Error (1521, GetLocation ($1), "Invalid base type `{0}'", ((ComposedCast)$1).GetSignatureForError ());
3277 * replaces all the productions for isolating the various
3278 * simple types, but we need this to reuse it easily in variable_type
3281 : OBJECT { $$ = new TypeExpression (compiler.BuiltinTypes.Object, GetLocation ($1)); }
3282 | STRING { $$ = new TypeExpression (compiler.BuiltinTypes.String, GetLocation ($1)); }
3283 | BOOL { $$ = new TypeExpression (compiler.BuiltinTypes.Bool, GetLocation ($1)); }
3284 | DECIMAL { $$ = new TypeExpression (compiler.BuiltinTypes.Decimal, GetLocation ($1)); }
3285 | FLOAT { $$ = new TypeExpression (compiler.BuiltinTypes.Float, GetLocation ($1)); }
3286 | DOUBLE { $$ = new TypeExpression (compiler.BuiltinTypes.Double, GetLocation ($1)); }
3291 : SBYTE { $$ = new TypeExpression (compiler.BuiltinTypes.SByte, GetLocation ($1)); }
3292 | BYTE { $$ = new TypeExpression (compiler.BuiltinTypes.Byte, GetLocation ($1)); }
3293 | SHORT { $$ = new TypeExpression (compiler.BuiltinTypes.Short, GetLocation ($1)); }
3294 | USHORT { $$ = new TypeExpression (compiler.BuiltinTypes.UShort, GetLocation ($1)); }
3295 | INT { $$ = new TypeExpression (compiler.BuiltinTypes.Int, GetLocation ($1)); }
3296 | UINT { $$ = new TypeExpression (compiler.BuiltinTypes.UInt, GetLocation ($1)); }
3297 | LONG { $$ = new TypeExpression (compiler.BuiltinTypes.Long, GetLocation ($1)); }
3298 | ULONG { $$ = new TypeExpression (compiler.BuiltinTypes.ULong, GetLocation ($1)); }
3299 | CHAR { $$ = new TypeExpression (compiler.BuiltinTypes.Char, GetLocation ($1)); }
3303 // Expressions, section 7.5
3308 : type_name_expression
3310 | array_creation_expression
3311 | parenthesized_expression
3312 | default_value_expression
3313 | invocation_expression
3317 | post_increment_expression
3318 | post_decrement_expression
3319 | object_or_delegate_creation_expression
3320 | anonymous_type_expression
3323 | checked_expression
3324 | unchecked_expression
3325 | pointer_member_access
3326 | anonymous_method_expression
3327 | undocumented_expressions
3328 | interpolated_string
3331 type_name_expression
3333 | IDENTIFIER GENERATE_COMPLETION {
3334 var lt = (LocatedToken) $1;
3335 $$ = new CompletionSimpleName (MemberName.MakeName (lt.Value, null), lt.Location);
3343 | NULL { $$ = new NullLiteral (GetLocation ($1)); }
3347 : TRUE { $$ = new BoolLiteral (compiler.BuiltinTypes, true, GetLocation ($1)); }
3348 | FALSE { $$ = new BoolLiteral (compiler.BuiltinTypes, false, GetLocation ($1)); }
3352 : INTERPOLATED_STRING interpolations INTERPOLATED_STRING_END
3354 $$ = new InterpolatedString ((StringLiteral) $1, (List<Expression>) $2, (StringLiteral) $3);
3356 | INTERPOLATED_STRING_END
3358 $$ = new InterpolatedString ((StringLiteral) $1, null, null);
3365 var list = new List<Expression> ();
3366 list.Add ((InterpolatedStringInsert) $1);
3369 | interpolations INTERPOLATED_STRING interpolation
3371 var list = (List<Expression>) $1;
3372 list.Add ((StringLiteral) $2);
3373 list.Add ((InterpolatedStringInsert) $3);
3381 $$ = new InterpolatedStringInsert ((Expression) $1);
3383 | expression COMMA expression
3385 $$ = new InterpolatedStringInsert ((Expression) $1) {
3386 Alignment = (Expression)$3
3391 lexer.parsing_interpolation_format = true;
3395 lexer.parsing_interpolation_format = false;
3397 $$ = new InterpolatedStringInsert ((Expression) $1) {
3401 | expression COMMA expression COLON
3403 lexer.parsing_interpolation_format = true;
3407 lexer.parsing_interpolation_format = false;
3409 $$ = new InterpolatedStringInsert ((Expression) $1) {
3410 Alignment = (Expression)$3,
3411 Format = (string) $6
3418 // Here is the trick, tokenizer may think that parens is a special but
3419 // parser is interested in open parens only, so we merge them.
3420 // Consider: if (a)foo ();
3428 // Use this production to accept closing parenthesis or
3429 // performing completion
3433 | COMPLETE_COMPLETION
3437 parenthesized_expression
3438 : OPEN_PARENS expression CLOSE_PARENS
3440 $$ = new ParenthesizedExpression ((Expression) $2, GetLocation ($1));
3441 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
3443 | OPEN_PARENS expression COMPLETE_COMPLETION
3445 $$ = new ParenthesizedExpression ((Expression) $2, GetLocation ($1));
3450 : primary_expression DOT identifier_inside_body opt_type_argument_list
3452 var lt = (LocatedToken) $3;
3453 $$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
3454 lbag.AddLocation ($$, GetLocation ($2));
3456 | primary_expression DOT identifier_inside_body generic_dimension
3458 var lt = (LocatedToken) $3;
3459 $$ = new MemberAccess ((Expression) $1, lt.Value, (int) $4, lt.Location);
3460 lbag.AddLocation ($$, GetLocation ($2));
3462 | primary_expression INTERR_OPERATOR DOT identifier_inside_body opt_type_argument_list
3464 if (lang_version < LanguageVersion.V_6)
3465 FeatureIsNotAvailable (GetLocation ($2), "null propagating operator");
3467 var lt = (LocatedToken) $4;
3468 $$ = new ConditionalMemberAccess ((Expression) $1, lt.Value, (TypeArguments) $5, lt.Location);
3469 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($3));
3471 | builtin_types DOT identifier_inside_body opt_type_argument_list
3473 var lt = (LocatedToken) $3;
3474 $$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
3475 lbag.AddLocation ($$, GetLocation ($2));
3477 | BASE DOT identifier_inside_body opt_type_argument_list
3479 var lt = (LocatedToken) $3;
3480 $$ = new MemberAccess (new BaseThis (GetLocation ($1)), lt.Value, (TypeArguments) $4, lt.Location);
3481 lbag.AddLocation ($$, GetLocation ($2));
3483 | AWAIT DOT identifier_inside_body opt_type_argument_list
3485 var lt = (LocatedToken) $3;
3486 $$ = new MemberAccess (new SimpleName ("await", ((LocatedToken) $1).Location), lt.Value, (TypeArguments) $4, lt.Location);
3487 lbag.AddLocation ($$, GetLocation ($2));
3489 | qualified_alias_member identifier_inside_body opt_type_argument_list
3491 var lt1 = (LocatedToken) $1;
3492 var lt2 = (LocatedToken) $2;
3494 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (TypeArguments) $3, lt1.Location);
3495 lbag.AddLocation ($$, GetLocation ($2));
3497 | qualified_alias_member identifier_inside_body generic_dimension
3499 var lt1 = (LocatedToken) $1;
3500 var lt2 = (LocatedToken) $2;
3502 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (int) $3, lt1.Location);
3503 lbag.AddLocation ($$, GetLocation ($2));
3505 | primary_expression DOT GENERATE_COMPLETION {
3506 $$ = new CompletionMemberAccess ((Expression) $1, null,GetLocation ($3));
3508 | primary_expression DOT IDENTIFIER GENERATE_COMPLETION {
3509 var lt = (LocatedToken) $3;
3510 $$ = new CompletionMemberAccess ((Expression) $1, lt.Value, lt.Location);
3512 | builtin_types DOT GENERATE_COMPLETION
3514 $$ = new CompletionMemberAccess ((Expression) $1, null, lexer.Location);
3516 | builtin_types DOT IDENTIFIER GENERATE_COMPLETION {
3517 var lt = (LocatedToken) $3;
3518 $$ = new CompletionMemberAccess ((Expression) $1, lt.Value, lt.Location);
3522 invocation_expression
3523 : primary_expression open_parens_any opt_argument_list close_parens
3525 $$ = new Invocation ((Expression) $1, (Arguments) $3);
3526 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
3528 | primary_expression open_parens_any argument_list error
3530 Error_SyntaxError (yyToken);
3532 $$ = new Invocation ((Expression) $1, (Arguments) $3);
3533 lbag.AddLocation ($$, GetLocation ($2));
3535 | primary_expression open_parens_any error
3537 Error_SyntaxError (yyToken);
3539 $$ = new Invocation ((Expression) $1, null);
3540 lbag.AddLocation ($$, GetLocation ($2));
3544 opt_object_or_collection_initializer
3545 : /* empty */ { $$ = null; }
3546 | object_or_collection_initializer
3549 object_or_collection_initializer
3550 : OPEN_BRACE opt_member_initializer_list close_brace_or_complete_completion
3553 $$ = new CollectionOrObjectInitializers (GetLocation ($1));
3555 $$ = new CollectionOrObjectInitializers ((List<Expression>) $2, GetLocation ($1));
3557 lbag.AddLocation ($$, GetLocation ($3));
3559 | OPEN_BRACE member_initializer_list COMMA CLOSE_BRACE
3561 $$ = new CollectionOrObjectInitializers ((List<Expression>) $2, GetLocation ($1));
3562 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($4));
3566 opt_member_initializer_list
3567 : /* empty */ { $$ = null; }
3568 | member_initializer_list
3574 member_initializer_list
3575 : member_initializer
3577 var a = new List<Expression> ();
3578 a.Add ((Expression) $1);
3581 | member_initializer_list COMMA member_initializer
3583 var a = (List<Expression>)$1;
3584 a.Add ((Expression) $3);
3587 | member_initializer_list error {
3588 Error_SyntaxError (yyToken);
3594 : IDENTIFIER ASSIGN initializer_value
3596 var lt = (LocatedToken) $1;
3597 $$ = new ElementInitializer (lt.Value, (Expression)$3, lt.Location);
3598 lbag.AddLocation ($$, GetLocation ($2));
3600 | AWAIT ASSIGN initializer_value
3602 var lt = (LocatedToken) Error_AwaitAsIdentifier ($1);
3603 $$ = new ElementInitializer (lt.Value, (Expression)$3, lt.Location);
3604 lbag.AddLocation ($$, GetLocation ($2));
3606 | GENERATE_COMPLETION
3608 $$ = new CompletionElementInitializer (null, GetLocation ($1));
3610 | non_assignment_expression opt_COMPLETE_COMPLETION {
3611 CompletionSimpleName csn = $1 as CompletionSimpleName;
3613 $$ = new CollectionElementInitializer ((Expression)$1);
3615 $$ = new CompletionElementInitializer (csn.Prefix, csn.Location);
3617 | OPEN_BRACE expression_list CLOSE_BRACE
3620 $$ = new CollectionElementInitializer (GetLocation ($1));
3622 $$ = new CollectionElementInitializer ((List<Expression>)$2, GetLocation ($1));
3624 lbag.AddLocation ($$, GetLocation ($3));
3626 | OPEN_BRACKET_EXPR argument_list CLOSE_BRACKET ASSIGN initializer_value
3628 if (lang_version < LanguageVersion.V_6)
3629 FeatureIsNotAvailable (GetLocation ($1), "dictionary initializer");
3631 $$ = new DictionaryElementInitializer ((Arguments)$2, (Expression) $5, GetLocation ($1));
3632 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($4));
3634 | OPEN_BRACE CLOSE_BRACE
3636 report.Error (1920, GetLocation ($1), "An element initializer cannot be empty");
3637 $$ = new CollectionElementInitializer (GetLocation ($1));
3638 lbag.AddLocation ($$, GetLocation ($2));
3644 | object_or_collection_initializer
3648 : /* empty */ { $$ = null; }
3653 : argument_or_named_argument
3655 Arguments list = new Arguments (4);
3656 list.Add ((Argument) $1);
3659 | argument_list COMMA argument
3661 Arguments list = (Arguments) $1;
3662 if (list [list.Count - 1] is NamedArgument)
3663 Error_NamedArgumentExpected ((NamedArgument) list [list.Count - 1]);
3665 list.Add ((Argument) $3);
3668 | argument_list COMMA named_argument
3670 Arguments list = (Arguments) $1;
3671 NamedArgument a = (NamedArgument) $3;
3672 for (int i = 0; i < list.Count; ++i) {
3673 NamedArgument na = list [i] as NamedArgument;
3674 if (na != null && na.Name == a.Name)
3675 report.Error (1740, na.Location, "Named argument `{0}' specified multiple times",
3682 | argument_list COMMA error
3684 if (lexer.putback_char == -1)
3685 lexer.putback (')'); // TODO: Wrong but what can I do
3686 Error_SyntaxError (yyToken);
3691 report.Error (839, GetLocation ($1), "An argument is missing");
3699 $$ = new Argument ((Expression) $1);
3701 | non_simple_argument
3704 argument_or_named_argument
3710 : REF variable_reference
3712 $$ = new Argument ((Expression) $2, Argument.AType.Ref);
3713 lbag.AddLocation ($$, GetLocation ($1));
3715 | REF declaration_expression
3717 $$ = new Argument ((Expression) $2, Argument.AType.Ref);
3719 | OUT variable_reference
3721 $$ = new Argument ((Expression) $2, Argument.AType.Out);
3722 lbag.AddLocation ($$, GetLocation ($1));
3724 | OUT declaration_expression
3726 $$ = new Argument ((Expression) $2, Argument.AType.Out);
3728 | ARGLIST OPEN_PARENS argument_list CLOSE_PARENS
3730 $$ = new Argument (new Arglist ((Arguments) $3, GetLocation ($1)));
3731 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
3733 | ARGLIST OPEN_PARENS CLOSE_PARENS
3735 $$ = new Argument (new Arglist (GetLocation ($1)));
3736 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($3));
3740 declaration_expression
3741 : OPEN_PARENS declaration_expression CLOSE_PARENS
3743 $$ = new ParenthesizedExpression ((Expression) $2, GetLocation ($1));
3744 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
3747 | CHECKED open_parens_any declaration_expression CLOSE_PARENS
3749 $$ = new CheckedExpr ((Expression) $3, GetLocation ($1));
3750 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
3752 | UNCHECKED open_parens_any declaration_expression CLOSE_PARENS
3754 $$ = new UnCheckedExpr ((Expression) $3, GetLocation ($1));
3755 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
3758 | variable_type identifier_inside_body
3760 if (lang_version != LanguageVersion.Experimental)
3761 FeatureIsNotAvailable (GetLocation ($1), "declaration expression");
3763 var lt = (LocatedToken) $2;
3764 var lv = new LocalVariable (current_block, lt.Value, lt.Location);
3765 current_block.AddLocalName (lv);
3766 $$ = new DeclarationExpression ((FullNamedExpression) $1, lv);
3768 | variable_type identifier_inside_body ASSIGN expression
3770 if (lang_version != LanguageVersion.Experimental)
3771 FeatureIsNotAvailable (GetLocation ($1), "declaration expression");
3773 var lt = (LocatedToken) $2;
3774 var lv = new LocalVariable (current_block, lt.Value, lt.Location);
3775 current_block.AddLocalName (lv);
3776 $$ = new DeclarationExpression ((FullNamedExpression) $1, lv) {
3777 Initializer = (Expression) $4
3787 : primary_expression OPEN_BRACKET_EXPR expression_list_arguments CLOSE_BRACKET
3789 $$ = new ElementAccess ((Expression) $1, (Arguments) $3, GetLocation ($2));
3790 lbag.AddLocation ($$, GetLocation ($4));
3792 | primary_expression INTERR_OPERATOR OPEN_BRACKET_EXPR expression_list_arguments CLOSE_BRACKET
3794 if (lang_version < LanguageVersion.V_6)
3795 FeatureIsNotAvailable (GetLocation ($2), "null propagating operator");
3797 $$ = new ElementAccess ((Expression) $1, (Arguments) $4, GetLocation ($3)) {
3798 ConditionalAccess = true
3801 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($5));
3803 | primary_expression OPEN_BRACKET_EXPR expression_list_arguments error
3805 Error_SyntaxError (yyToken);
3806 $$ = new ElementAccess ((Expression) $1, (Arguments) $3, GetLocation ($2));
3808 | primary_expression OPEN_BRACKET_EXPR error
3810 Error_SyntaxError (yyToken);
3811 $$ = new ElementAccess ((Expression) $1, null, GetLocation ($2));
3816 : expression_or_error
3818 var list = new List<Expression> (4);
3819 list.Add ((Expression) $1);
3822 | expression_list COMMA expression_or_error
3824 var list = (List<Expression>) $1;
3825 list.Add ((Expression) $3);
3830 expression_list_arguments
3831 : expression_list_argument
3833 Arguments args = new Arguments (4);
3834 args.Add ((Argument) $1);
3837 | expression_list_arguments COMMA expression_list_argument
3839 Arguments args = (Arguments) $1;
3840 if (args [args.Count - 1] is NamedArgument && !($3 is NamedArgument))
3841 Error_NamedArgumentExpected ((NamedArgument) args [args.Count - 1]);
3843 args.Add ((Argument) $3);
3848 expression_list_argument
3851 $$ = new Argument ((Expression) $1);
3859 $$ = new This (GetLocation ($1));
3864 : BASE OPEN_BRACKET_EXPR expression_list_arguments CLOSE_BRACKET
3866 $$ = new ElementAccess (new BaseThis (GetLocation ($1)), (Arguments) $3, GetLocation ($2));
3867 lbag.AddLocation ($$, GetLocation ($4));
3869 | BASE OPEN_BRACKET error
3871 Error_SyntaxError (yyToken);
3872 $$ = new ElementAccess (null, null, GetLocation ($2));
3876 post_increment_expression
3877 : primary_expression OP_INC
3879 $$ = new UnaryMutator (UnaryMutator.Mode.PostIncrement, (Expression) $1, GetLocation ($2));
3883 post_decrement_expression
3884 : primary_expression OP_DEC
3886 $$ = new UnaryMutator (UnaryMutator.Mode.PostDecrement, (Expression) $1, GetLocation ($2));
3890 object_or_delegate_creation_expression
3891 : NEW new_expr_type open_parens_any opt_argument_list CLOSE_PARENS opt_object_or_collection_initializer
3894 if (lang_version <= LanguageVersion.ISO_2)
3895 FeatureIsNotAvailable (GetLocation ($1), "object initializers");
3897 $$ = new NewInitialize ((FullNamedExpression) $2, (Arguments) $4, (CollectionOrObjectInitializers) $6, GetLocation ($1));
3899 $$ = new New ((FullNamedExpression) $2, (Arguments) $4, GetLocation ($1));
3902 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($5));
3904 | NEW new_expr_type object_or_collection_initializer
3906 if (lang_version <= LanguageVersion.ISO_2)
3907 FeatureIsNotAvailable (GetLocation ($1), "collection initializers");
3909 $$ = new NewInitialize ((FullNamedExpression) $2, null, (CollectionOrObjectInitializers) $3, GetLocation ($1));
3913 array_creation_expression
3914 : NEW new_expr_type OPEN_BRACKET_EXPR expression_list CLOSE_BRACKET
3916 opt_array_initializer
3918 $$ = new ArrayCreation ((FullNamedExpression) $2, (List<Expression>) $4,
3919 new ComposedTypeSpecifier (((List<Expression>) $4).Count, GetLocation ($3)) {
3920 Next = (ComposedTypeSpecifier) $6
3921 }, (ArrayInitializer) $7, GetLocation ($1));
3922 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($5));
3924 | NEW new_expr_type rank_specifiers opt_array_initializer
3927 report.Error (1586, GetLocation ($1), "Array creation must have array size or array initializer");
3929 $$ = new ArrayCreation ((FullNamedExpression) $2, (ComposedTypeSpecifier) $3, (ArrayInitializer) $4, GetLocation ($1)) {
3930 NoEmptyInterpolation = true
3933 | NEW rank_specifier array_initializer
3935 if (lang_version <= LanguageVersion.ISO_2)
3936 FeatureIsNotAvailable (GetLocation ($1), "implicitly typed arrays");
3938 $$ = new ImplicitlyTypedArrayCreation ((ComposedTypeSpecifier) $2, (ArrayInitializer) $3, GetLocation ($1));
3940 | NEW new_expr_type OPEN_BRACKET CLOSE_BRACKET OPEN_BRACKET_EXPR error CLOSE_BRACKET
3942 report.Error (178, GetLocation ($6), "Invalid rank specifier, expecting `,' or `]'");
3943 $$ = new ArrayCreation ((FullNamedExpression) $2, null, GetLocation ($1));
3945 | NEW new_expr_type error
3947 Error_SyntaxError (yyToken);
3948 // It can be any of new expression, create the most common one
3949 $$ = new New ((FullNamedExpression) $2, null, GetLocation ($1));
3955 ++lexer.parsing_type;
3959 --lexer.parsing_type;
3964 anonymous_type_expression
3965 : NEW OPEN_BRACE anonymous_type_parameters_opt_comma CLOSE_BRACE
3967 if (lang_version <= LanguageVersion.ISO_2)
3968 FeatureIsNotAvailable (GetLocation ($1), "anonymous types");
3970 $$ = new NewAnonymousType ((List<AnonymousTypeParameter>) $3, current_container, GetLocation ($1));
3972 // TODO: lbag comma location
3973 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
3975 | NEW OPEN_BRACE GENERATE_COMPLETION
3977 $$ = new EmptyCompletion ();
3981 anonymous_type_parameters_opt_comma
3982 : anonymous_type_parameters_opt
3983 | anonymous_type_parameters COMMA
3986 anonymous_type_parameters_opt
3988 | anonymous_type_parameters
3991 anonymous_type_parameters
3992 : anonymous_type_parameter
3994 var a = new List<AnonymousTypeParameter> (4);
3995 a.Add ((AnonymousTypeParameter) $1);
3998 | anonymous_type_parameters COMMA anonymous_type_parameter
4000 var a = (List<AnonymousTypeParameter>) $1;
4001 a.Add ((AnonymousTypeParameter) $3);
4004 | COMPLETE_COMPLETION
4006 $$ = new EmptyCompletion ();
4008 | anonymous_type_parameter COMPLETE_COMPLETION
4014 anonymous_type_parameter
4015 : identifier_inside_body ASSIGN variable_initializer
4017 var lt = (LocatedToken)$1;
4018 $$ = new AnonymousTypeParameter ((Expression)$3, lt.Value, lt.Location);
4019 lbag.AddLocation ($$, GetLocation ($2));
4021 | identifier_inside_body
4023 var lt = (LocatedToken)$1;
4024 $$ = new AnonymousTypeParameter (new SimpleName (lt.Value, lt.Location),
4025 lt.Value, lt.Location);
4029 MemberAccess ma = (MemberAccess) $1;
4030 $$ = new AnonymousTypeParameter (ma, ma.Name, ma.Location);
4034 report.Error (746, lexer.Location,
4035 "Invalid anonymous type member declarator. Anonymous type members must be a member assignment, simple name or member access expression");
4047 | rank_specifier rank_specifiers
4049 ((ComposedTypeSpecifier) $1).Next = (ComposedTypeSpecifier) $2;
4055 : OPEN_BRACKET CLOSE_BRACKET
4057 $$ = ComposedTypeSpecifier.CreateArrayDimension (1, GetLocation ($1));
4058 lbag.AddLocation ($$, GetLocation ($2));
4060 | OPEN_BRACKET dim_separators CLOSE_BRACKET
4062 $$ = ComposedTypeSpecifier.CreateArrayDimension ((int)$2, GetLocation ($1));
4063 lbag.AddLocation ($$, GetLocation ($3));
4072 | dim_separators COMMA
4074 $$ = ((int) $1) + 1;
4078 opt_array_initializer
4090 : OPEN_BRACE CLOSE_BRACE
4092 var ai = new ArrayInitializer (0, GetLocation ($1));
4093 ai.VariableDeclaration = current_variable;
4094 lbag.AddLocation (ai, GetLocation ($2));
4097 | OPEN_BRACE variable_initializer_list opt_comma CLOSE_BRACE
4099 var ai = new ArrayInitializer ((List<Expression>) $2, GetLocation ($1));
4100 ai.VariableDeclaration = current_variable;
4102 lbag.AddLocation (ai, GetLocation ($3), GetLocation ($4));
4104 lbag.AddLocation (ai, GetLocation ($4));
4110 variable_initializer_list
4111 : variable_initializer
4113 var list = new List<Expression> (4);
4114 list.Add ((Expression) $1);
4117 | variable_initializer_list COMMA variable_initializer
4119 var list = (List<Expression>) $1;
4120 list.Add ((Expression) $3);
4126 : TYPEOF open_parens_any typeof_type_expression CLOSE_PARENS
4128 $$ = new TypeOf ((FullNamedExpression) $3, GetLocation ($1));
4129 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4133 typeof_type_expression
4137 Error_TypeExpected (lexer.Location);
4145 if (lang_version < LanguageVersion.ISO_2)
4146 FeatureIsNotAvailable (GetLocation ($1), "generics");
4152 qualified_alias_member
4153 : IDENTIFIER DOUBLE_COLON
4155 var lt = (LocatedToken) $1;
4156 if (lang_version == LanguageVersion.ISO_1)
4157 FeatureIsNotAvailable (lt.Location, "namespace alias qualifier");
4164 : SIZEOF open_parens_any type CLOSE_PARENS
4166 $$ = new SizeOf ((Expression) $3, GetLocation ($1));
4167 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4169 | SIZEOF open_parens_any type error
4171 Error_SyntaxError (yyToken);
4173 $$ = new SizeOf ((Expression) $3, GetLocation ($1));
4174 lbag.AddLocation ($$, GetLocation ($2));
4179 : CHECKED open_parens_any expression CLOSE_PARENS
4181 $$ = new CheckedExpr ((Expression) $3, GetLocation ($1));
4182 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4186 Error_SyntaxError (yyToken);
4188 $$ = new CheckedExpr (null, GetLocation ($1));
4192 unchecked_expression
4193 : UNCHECKED open_parens_any expression CLOSE_PARENS
4195 $$ = new UnCheckedExpr ((Expression) $3, GetLocation ($1));
4196 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4200 Error_SyntaxError (yyToken);
4202 $$ = new UnCheckedExpr (null, GetLocation ($1));
4206 pointer_member_access
4207 : primary_expression OP_PTR IDENTIFIER opt_type_argument_list
4209 var lt = (LocatedToken) $3;
4210 $$ = new MemberAccess (new Indirection ((Expression) $1, GetLocation ($2)), lt.Value, (TypeArguments) $4, lt.Location);
4214 anonymous_method_expression
4215 : DELEGATE opt_anonymous_method_signature
4217 start_anonymous (false, (ParametersCompiled) $2, false, GetLocation ($1));
4221 $$ = end_anonymous ((ParametersBlock) $4);
4223 | ASYNC DELEGATE opt_anonymous_method_signature
4225 start_anonymous (false, (ParametersCompiled) $3, true, GetLocation ($1));
4229 $$ = end_anonymous ((ParametersBlock) $5);
4233 opt_anonymous_method_signature
4236 $$ = ParametersCompiled.Undefined;
4238 | anonymous_method_signature
4241 anonymous_method_signature
4244 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
4246 opt_formal_parameter_list CLOSE_PARENS
4248 valid_param_mod = 0;
4253 default_value_expression
4254 : DEFAULT open_parens_any type CLOSE_PARENS
4256 if (lang_version < LanguageVersion.ISO_2)
4257 FeatureIsNotAvailable (GetLocation ($1), "default value expression");
4259 $$ = new DefaultValueExpression ((Expression) $3, GetLocation ($1));
4260 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
4265 : primary_expression
4266 | BANG prefixed_unary_expression
4268 $$ = new Unary (Unary.Operator.LogicalNot, (Expression) $2, GetLocation ($1));
4270 | TILDE prefixed_unary_expression
4272 $$ = new Unary (Unary.Operator.OnesComplement, (Expression) $2, GetLocation ($1));
4274 | OPEN_PARENS_CAST type CLOSE_PARENS prefixed_unary_expression
4276 $$ = new Cast ((FullNamedExpression) $2, (Expression) $4, GetLocation ($1));
4277 lbag.AddLocation ($$, GetLocation ($3));
4279 | AWAIT prefixed_unary_expression
4282 if (current_anonymous_method is LambdaExpression) {
4283 report.Error (4034, GetLocation ($1),
4284 "The `await' operator can only be used when its containing lambda expression is marked with the `async' modifier");
4285 } else if (current_anonymous_method != null) {
4286 report.Error (4035, GetLocation ($1),
4287 "The `await' operator can only be used when its containing anonymous method is marked with the `async' modifier");
4288 } else if (interactive_async != null) {
4289 current_block.Explicit.RegisterAsyncAwait ();
4290 interactive_async = true;
4292 report.Error (4033, GetLocation ($1),
4293 "The `await' operator can only be used when its containing method is marked with the `async' modifier");
4296 current_block.Explicit.RegisterAsyncAwait ();
4299 $$ = new Await ((Expression) $2, GetLocation ($1));
4303 Error_SyntaxError (yyToken);
4305 $$ = new Unary (Unary.Operator.LogicalNot, null, GetLocation ($1));
4309 Error_SyntaxError (yyToken);
4311 $$ = new Unary (Unary.Operator.OnesComplement, null, GetLocation ($1));
4313 | OPEN_PARENS_CAST type CLOSE_PARENS error
4315 Error_SyntaxError (yyToken);
4317 $$ = new Cast ((FullNamedExpression) $2, null, GetLocation ($1));
4318 lbag.AddLocation ($$, GetLocation ($3));
4322 Error_SyntaxError (yyToken);
4324 $$ = new Await (null, GetLocation ($1));
4329 // The idea to split this out is from Rhys' grammar
4330 // to solve the problem with casts.
4332 prefixed_unary_expression
4334 | PLUS prefixed_unary_expression
4336 $$ = new Unary (Unary.Operator.UnaryPlus, (Expression) $2, GetLocation ($1));
4338 | MINUS prefixed_unary_expression
4340 $$ = new Unary (Unary.Operator.UnaryNegation, (Expression) $2, GetLocation ($1));
4342 | OP_INC prefixed_unary_expression
4344 $$ = new UnaryMutator (UnaryMutator.Mode.PreIncrement, (Expression) $2, GetLocation ($1));
4346 | OP_DEC prefixed_unary_expression
4348 $$ = new UnaryMutator (UnaryMutator.Mode.PreDecrement, (Expression) $2, GetLocation ($1));
4350 | STAR prefixed_unary_expression
4352 $$ = new Indirection ((Expression) $2, GetLocation ($1));
4354 | BITWISE_AND prefixed_unary_expression
4356 $$ = new Unary (Unary.Operator.AddressOf, (Expression) $2, GetLocation ($1));
4360 Error_SyntaxError (yyToken);
4362 $$ = new Unary (Unary.Operator.UnaryPlus, null, GetLocation ($1));
4366 Error_SyntaxError (yyToken);
4368 $$ = new Unary (Unary.Operator.UnaryNegation, null, GetLocation ($1));
4372 Error_SyntaxError (yyToken);
4374 $$ = new UnaryMutator (UnaryMutator.Mode.PreIncrement, null, GetLocation ($1));
4378 Error_SyntaxError (yyToken);
4380 $$ = new UnaryMutator (UnaryMutator.Mode.PreDecrement, null, GetLocation ($1));
4384 Error_SyntaxError (yyToken);
4386 $$ = new Indirection (null, GetLocation ($1));
4390 Error_SyntaxError (yyToken);
4392 $$ = new Unary (Unary.Operator.AddressOf, null, GetLocation ($1));
4396 multiplicative_expression
4397 : prefixed_unary_expression
4398 | multiplicative_expression STAR prefixed_unary_expression
4400 $$ = new Binary (Binary.Operator.Multiply, (Expression) $1, (Expression) $3);
4401 lbag.AddLocation ($$, GetLocation ($2));
4403 | multiplicative_expression DIV prefixed_unary_expression
4405 $$ = new Binary (Binary.Operator.Division, (Expression) $1, (Expression) $3);
4406 lbag.AddLocation ($$, GetLocation ($2));
4408 | multiplicative_expression PERCENT prefixed_unary_expression
4410 $$ = new Binary (Binary.Operator.Modulus, (Expression) $1, (Expression) $3);
4411 lbag.AddLocation ($$, GetLocation ($2));
4413 | multiplicative_expression STAR error
4415 Error_SyntaxError (yyToken);
4417 $$ = new Binary (Binary.Operator.Multiply, (Expression) $1, null);
4418 lbag.AddLocation ($$, GetLocation ($2));
4420 | multiplicative_expression DIV error
4422 Error_SyntaxError (yyToken);
4424 $$ = new Binary (Binary.Operator.Division, (Expression) $1, null);
4425 lbag.AddLocation ($$, GetLocation ($2));
4427 | multiplicative_expression PERCENT error
4429 Error_SyntaxError (yyToken);
4431 $$ = new Binary (Binary.Operator.Modulus, (Expression) $1, null);
4432 lbag.AddLocation ($$, GetLocation ($2));
4437 : multiplicative_expression
4438 | additive_expression PLUS multiplicative_expression
4440 $$ = new Binary (Binary.Operator.Addition, (Expression) $1, (Expression) $3);
4441 lbag.AddLocation ($$, GetLocation ($2));
4443 | additive_expression MINUS multiplicative_expression
4445 $$ = new Binary (Binary.Operator.Subtraction, (Expression) $1, (Expression) $3);
4446 lbag.AddLocation ($$, GetLocation ($2));
4448 | additive_expression PLUS error
4450 Error_SyntaxError (yyToken);
4452 $$ = new Binary (Binary.Operator.Addition, (Expression) $1, null);
4453 lbag.AddLocation ($$, GetLocation ($2));
4455 | additive_expression MINUS error
4457 Error_SyntaxError (yyToken);
4459 $$ = new Binary (Binary.Operator.Subtraction, (Expression) $1, null);
4460 lbag.AddLocation ($$, GetLocation ($2));
4462 | additive_expression AS type
4464 $$ = new As ((Expression) $1, (Expression) $3, GetLocation ($2));
4466 | additive_expression IS pattern_type_expr opt_identifier
4468 var is_expr = new Is ((Expression) $1, (Expression) $3, GetLocation ($2));
4470 if (lang_version != LanguageVersion.Experimental)
4471 FeatureIsNotAvailable (GetLocation ($4), "type pattern matching");
4473 var lt = (LocatedToken) $4;
4474 is_expr.Variable = new LocalVariable (current_block, lt.Value, lt.Location);
4475 current_block.AddLocalName (is_expr.Variable);
4480 | additive_expression IS pattern_expr
4482 var is_expr = new Is ((Expression) $1, (Expression) $3, GetLocation ($2));
4483 if (lang_version != LanguageVersion.Experimental)
4484 FeatureIsNotAvailable (GetLocation ($2), "pattern matching");
4488 | additive_expression AS error
4490 Error_SyntaxError (yyToken);
4492 $$ = new As ((Expression) $1, null, GetLocation ($2));
4494 | additive_expression IS error
4496 Error_SyntaxError (yyToken);
4498 $$ = new Is ((Expression) $1, null, GetLocation ($2));
4502 var lt = (LocatedToken) $1;
4503 $$ = new Is (new SimpleName (lt.Value, lt.Location), (Expression) $3, GetLocation ($2));
4507 var lt = (LocatedToken) $1;
4508 $$ = new As (new SimpleName (lt.Value, lt.Location), (Expression) $3, GetLocation ($2));
4518 | PLUS prefixed_unary_expression
4520 $$ = new Unary (Unary.Operator.UnaryPlus, (Expression) $2, GetLocation ($1));
4522 | MINUS prefixed_unary_expression
4524 $$ = new Unary (Unary.Operator.UnaryNegation, (Expression) $2, GetLocation ($1));
4527 | default_value_expression
4528 | OPEN_PARENS_CAST type CLOSE_PARENS prefixed_unary_expression
4530 $$ = new Cast ((FullNamedExpression) $2, (Expression) $4, GetLocation ($1));
4531 lbag.AddLocation ($$, GetLocation ($3));
4535 $$ = new WildcardPattern (GetLocation ($1));
4537 | pattern_expr_invocation
4541 pattern_expr_invocation
4542 : type_name_expression OPEN_PARENS opt_pattern_list CLOSE_PARENS
4544 $$ = new RecursivePattern ((ATypeNameExpression) $1, (Arguments) $3, GetLocation ($2));
4549 : type_name_expression OPEN_BRACE pattern_property_list CLOSE_BRACE
4551 $$ = new PropertyPattern ((ATypeNameExpression) $1, (List<PropertyPatternMember>) $3, GetLocation ($2));
4555 pattern_property_list
4556 : pattern_property_entry
4558 var list = new List<PropertyPatternMember> ();
4559 list.Add ((PropertyPatternMember) $1);
4562 | pattern_property_list COMMA pattern_property_entry
4564 var list = (List<PropertyPatternMember>) $1;
4565 list.Add ((PropertyPatternMember) $3);
4570 pattern_property_entry
4571 : identifier_inside_body IS pattern
4573 var lt = (LocatedToken) $1;
4574 $$ = new PropertyPatternMember (lt.Value, (Expression) $3, lt.Location);
4580 | pattern_type_expr opt_identifier
4583 var lt = (LocatedToken) $2;
4584 var variable = new LocalVariable (current_block, lt.Value, lt.Location);
4585 current_block.AddLocalName (variable);
4593 $$ = new Arguments (0);
4601 Arguments args = new Arguments (4);
4602 args.Add ((Argument) $1);
4605 | pattern_list COMMA pattern_argument
4607 Arguments args = (Arguments) $1;
4608 if (args [args.Count - 1] is NamedArgument && !($3 is NamedArgument))
4609 Error_NamedArgumentExpected ((NamedArgument) args [args.Count - 1]);
4611 args.Add ((Argument) $3);
4619 $$ = new Argument ((Expression) $1);
4621 | IDENTIFIER COLON pattern
4623 var lt = (LocatedToken) $1;
4624 $$ = new NamedArgument (lt.Value, lt.Location, (Expression) $3);
4629 : additive_expression
4630 | shift_expression OP_SHIFT_LEFT additive_expression
4632 $$ = new Binary (Binary.Operator.LeftShift, (Expression) $1, (Expression) $3);
4633 lbag.AddLocation ($$, GetLocation ($2));
4635 | shift_expression OP_SHIFT_RIGHT additive_expression
4637 $$ = new Binary (Binary.Operator.RightShift, (Expression) $1, (Expression) $3);
4638 lbag.AddLocation ($$, GetLocation ($2));
4640 | shift_expression OP_SHIFT_LEFT error
4642 Error_SyntaxError (yyToken);
4644 $$ = new Binary (Binary.Operator.LeftShift, (Expression) $1, null);
4645 lbag.AddLocation ($$, GetLocation ($2));
4647 | shift_expression OP_SHIFT_RIGHT error
4649 Error_SyntaxError (yyToken);
4651 $$ = new Binary (Binary.Operator.RightShift, (Expression) $1, null);
4652 lbag.AddLocation ($$, GetLocation ($2));
4656 relational_expression
4658 | relational_expression OP_LT shift_expression
4660 $$ = new Binary (Binary.Operator.LessThan, (Expression) $1, (Expression) $3);
4661 lbag.AddLocation ($$, GetLocation ($2));
4663 | relational_expression OP_GT shift_expression
4665 $$ = new Binary (Binary.Operator.GreaterThan, (Expression) $1, (Expression) $3);
4666 lbag.AddLocation ($$, GetLocation ($2));
4668 | relational_expression OP_LE shift_expression
4670 $$ = new Binary (Binary.Operator.LessThanOrEqual, (Expression) $1, (Expression) $3);
4671 lbag.AddLocation ($$, GetLocation ($2));
4673 | relational_expression OP_GE shift_expression
4675 $$ = new Binary (Binary.Operator.GreaterThanOrEqual, (Expression) $1, (Expression) $3);
4676 lbag.AddLocation ($$, GetLocation ($2));
4678 | relational_expression OP_LT error
4680 Error_SyntaxError (yyToken);
4682 $$ = new Binary (Binary.Operator.LessThan, (Expression) $1, null);
4683 lbag.AddLocation ($$, GetLocation ($2));
4685 | relational_expression OP_GT error
4687 Error_SyntaxError (yyToken);
4689 $$ = new Binary (Binary.Operator.GreaterThan, (Expression) $1, null);
4690 lbag.AddLocation ($$, GetLocation ($2));
4692 | relational_expression OP_LE error
4694 Error_SyntaxError (yyToken);
4696 $$ = new Binary (Binary.Operator.LessThanOrEqual, (Expression) $1, null);
4697 lbag.AddLocation ($$, GetLocation ($2));
4699 | relational_expression OP_GE error
4701 Error_SyntaxError (yyToken);
4703 $$ = new Binary (Binary.Operator.GreaterThanOrEqual, (Expression) $1, null);
4704 lbag.AddLocation ($$, GetLocation ($2));
4709 : relational_expression
4710 | equality_expression OP_EQ relational_expression
4712 $$ = new Binary (Binary.Operator.Equality, (Expression) $1, (Expression) $3);
4713 lbag.AddLocation ($$, GetLocation ($2));
4715 | equality_expression OP_NE relational_expression
4717 $$ = new Binary (Binary.Operator.Inequality, (Expression) $1, (Expression) $3);
4718 lbag.AddLocation ($$, GetLocation ($2));
4720 | equality_expression OP_EQ error
4722 Error_SyntaxError (yyToken);
4724 $$ = new Binary (Binary.Operator.Equality, (Expression) $1, null);
4725 lbag.AddLocation ($$, GetLocation ($2));
4727 | equality_expression OP_NE error
4729 Error_SyntaxError (yyToken);
4731 $$ = new Binary (Binary.Operator.Inequality, (Expression) $1, null);
4732 lbag.AddLocation ($$, GetLocation ($2));
4737 : equality_expression
4738 | and_expression BITWISE_AND equality_expression
4740 $$ = new Binary (Binary.Operator.BitwiseAnd, (Expression) $1, (Expression) $3);
4741 lbag.AddLocation ($$, GetLocation ($2));
4743 | and_expression BITWISE_AND error
4745 Error_SyntaxError (yyToken);
4747 $$ = new Binary (Binary.Operator.BitwiseAnd, (Expression) $1, null);
4748 lbag.AddLocation ($$, GetLocation ($2));
4752 exclusive_or_expression
4754 | exclusive_or_expression CARRET and_expression
4756 $$ = new Binary (Binary.Operator.ExclusiveOr, (Expression) $1, (Expression) $3);
4757 lbag.AddLocation ($$, GetLocation ($2));
4759 | exclusive_or_expression CARRET error
4761 Error_SyntaxError (yyToken);
4763 $$ = new Binary (Binary.Operator.ExclusiveOr, (Expression) $1, null);
4764 lbag.AddLocation ($$, GetLocation ($2));
4768 inclusive_or_expression
4769 : exclusive_or_expression
4770 | inclusive_or_expression BITWISE_OR exclusive_or_expression
4772 $$ = new Binary (Binary.Operator.BitwiseOr, (Expression) $1, (Expression) $3);
4773 lbag.AddLocation ($$, GetLocation ($2));
4775 | inclusive_or_expression BITWISE_OR error
4777 Error_SyntaxError (yyToken);
4779 $$ = new Binary (Binary.Operator.BitwiseOr, (Expression) $1, null);
4780 lbag.AddLocation ($$, GetLocation ($2));
4784 conditional_and_expression
4785 : inclusive_or_expression
4786 | conditional_and_expression OP_AND inclusive_or_expression
4788 $$ = new Binary (Binary.Operator.LogicalAnd, (Expression) $1, (Expression) $3);
4789 lbag.AddLocation ($$, GetLocation ($2));
4791 | conditional_and_expression OP_AND error
4793 Error_SyntaxError (yyToken);
4795 $$ = new Binary (Binary.Operator.LogicalAnd, (Expression) $1, null);
4796 lbag.AddLocation ($$, GetLocation ($2));
4800 conditional_or_expression
4801 : conditional_and_expression
4802 | conditional_or_expression OP_OR conditional_and_expression
4804 $$ = new Binary (Binary.Operator.LogicalOr, (Expression) $1, (Expression) $3);
4805 lbag.AddLocation ($$, GetLocation ($2));
4807 | conditional_or_expression OP_OR error
4809 Error_SyntaxError (yyToken);
4811 $$ = new Binary (Binary.Operator.LogicalOr, (Expression) $1, null);
4812 lbag.AddLocation ($$, GetLocation ($2));
4816 null_coalescing_expression
4817 : conditional_or_expression
4818 | conditional_or_expression OP_COALESCING null_coalescing_expression
4820 if (lang_version < LanguageVersion.ISO_2)
4821 FeatureIsNotAvailable (GetLocation ($2), "null coalescing operator");
4823 $$ = new Nullable.NullCoalescingOperator ((Expression) $1, (Expression) $3);
4824 lbag.AddLocation ($$, GetLocation ($2));
4828 conditional_expression
4829 : null_coalescing_expression
4830 | null_coalescing_expression INTERR expression COLON expression
4832 $$ = new Conditional (new BooleanExpression ((Expression) $1), (Expression) $3, (Expression) $5, GetLocation ($2));
4833 lbag.AddLocation ($$, GetLocation ($4));
4835 | null_coalescing_expression INTERR expression error
4837 Error_SyntaxError (yyToken);
4839 $$ = new Conditional (new BooleanExpression ((Expression) $1), (Expression) $3, null, GetLocation ($2));
4841 | null_coalescing_expression INTERR expression COLON error
4843 Error_SyntaxError (yyToken);
4845 $$ = new Conditional (new BooleanExpression ((Expression) $1), (Expression) $3, null, GetLocation ($2));
4846 lbag.AddLocation ($$, GetLocation ($4));
4848 | null_coalescing_expression INTERR expression COLON CLOSE_BRACE
4850 Error_SyntaxError (Token.CLOSE_BRACE);
4852 $$ = new Conditional (new BooleanExpression ((Expression) $1), (Expression) $3, null, GetLocation ($2));
4853 lbag.AddLocation ($$, GetLocation ($4));
4854 lexer.putback ('}');
4858 assignment_expression
4859 : prefixed_unary_expression ASSIGN expression
4861 $$ = new SimpleAssign ((Expression) $1, (Expression) $3);
4862 lbag.AddLocation ($$, GetLocation ($2));
4864 | prefixed_unary_expression OP_MULT_ASSIGN expression
4866 $$ = new CompoundAssign (Binary.Operator.Multiply, (Expression) $1, (Expression) $3);
4867 lbag.AddLocation ($$, GetLocation ($2));
4869 | prefixed_unary_expression OP_DIV_ASSIGN expression
4871 $$ = new CompoundAssign (Binary.Operator.Division, (Expression) $1, (Expression) $3);
4872 lbag.AddLocation ($$, GetLocation ($2));
4874 | prefixed_unary_expression OP_MOD_ASSIGN expression
4876 $$ = new CompoundAssign (Binary.Operator.Modulus, (Expression) $1, (Expression) $3);
4877 lbag.AddLocation ($$, GetLocation ($2));
4879 | prefixed_unary_expression OP_ADD_ASSIGN expression
4881 $$ = new CompoundAssign (Binary.Operator.Addition, (Expression) $1, (Expression) $3);
4882 lbag.AddLocation ($$, GetLocation ($2));
4884 | prefixed_unary_expression OP_SUB_ASSIGN expression
4886 $$ = new CompoundAssign (Binary.Operator.Subtraction, (Expression) $1, (Expression) $3);
4887 lbag.AddLocation ($$, GetLocation ($2));
4889 | prefixed_unary_expression OP_SHIFT_LEFT_ASSIGN expression
4891 $$ = new CompoundAssign (Binary.Operator.LeftShift, (Expression) $1, (Expression) $3);
4892 lbag.AddLocation ($$, GetLocation ($2));
4894 | prefixed_unary_expression OP_SHIFT_RIGHT_ASSIGN expression
4896 $$ = new CompoundAssign (Binary.Operator.RightShift, (Expression) $1, (Expression) $3);
4897 lbag.AddLocation ($$, GetLocation ($2));
4899 | prefixed_unary_expression OP_AND_ASSIGN expression
4901 $$ = new CompoundAssign (Binary.Operator.BitwiseAnd, (Expression) $1, (Expression) $3);
4902 lbag.AddLocation ($$, GetLocation ($2));
4904 | prefixed_unary_expression OP_OR_ASSIGN expression
4906 $$ = new CompoundAssign (Binary.Operator.BitwiseOr, (Expression) $1, (Expression) $3);
4907 lbag.AddLocation ($$, GetLocation ($2));
4909 | prefixed_unary_expression OP_XOR_ASSIGN expression
4911 $$ = new CompoundAssign (Binary.Operator.ExclusiveOr, (Expression) $1, (Expression) $3);
4912 lbag.AddLocation ($$, GetLocation ($2));
4916 lambda_parameter_list
4919 var pars = new List<Parameter> (4);
4920 pars.Add ((Parameter) $1);
4924 | lambda_parameter_list COMMA lambda_parameter
4926 var pars = (List<Parameter>) $1;
4927 Parameter p = (Parameter)$3;
4928 if (pars[0].GetType () != p.GetType ()) {
4929 report.Error (748, p.Location, "All lambda parameters must be typed either explicitly or implicitly");
4938 : parameter_modifier parameter_type identifier_inside_body
4940 var lt = (LocatedToken) $3;
4942 $$ = new Parameter ((FullNamedExpression) $2, lt.Value, (Parameter.Modifier) $1, null, lt.Location);
4944 | parameter_type identifier_inside_body
4946 var lt = (LocatedToken) $2;
4948 $$ = new Parameter ((FullNamedExpression) $1, lt.Value, Parameter.Modifier.NONE, null, lt.Location);
4952 var lt = (LocatedToken) $1;
4953 $$ = new ImplicitLambdaParameter (lt.Value, lt.Location);
4957 var lt = (LocatedToken) Error_AwaitAsIdentifier ($1);
4958 $$ = new ImplicitLambdaParameter (lt.Value, lt.Location);
4962 opt_lambda_parameter_list
4963 : /* empty */ { $$ = ParametersCompiled.EmptyReadOnlyParameters; }
4964 | lambda_parameter_list {
4965 var pars_list = (List<Parameter>) $1;
4966 $$ = new ParametersCompiled (pars_list.ToArray ());
4970 lambda_expression_body
4972 start_block (Location.Null);
4974 expression // All expressions must handle error or current block won't be restored and breaking ast completely
4976 Block b = end_block (Location.Null);
4977 b.IsCompilerGenerated = true;
4978 b.AddStatement (new ContextualReturn ((Expression) $2));
4984 // Handles only cases like foo = x.FirstOrDefault (l => );
4985 // where we must restore current_variable
4986 Block b = end_block (Location.Null);
4987 b.IsCompilerGenerated = true;
4989 Error_SyntaxError (yyToken);
4998 Error_SyntaxError (yyToken);
5006 var lt = (LocatedToken) $1;
5007 Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
5008 start_anonymous (true, new ParametersCompiled (p), false, lt.Location);
5010 lambda_expression_body
5012 $$ = end_anonymous ((ParametersBlock) $4);
5013 lbag.AddLocation ($$, GetLocation ($2));
5017 var lt = (LocatedToken) Error_AwaitAsIdentifier ($1);
5018 Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
5019 start_anonymous (true, new ParametersCompiled (p), false, lt.Location);
5021 lambda_expression_body
5023 $$ = end_anonymous ((ParametersBlock) $4);
5024 lbag.AddLocation ($$, GetLocation ($2));
5026 | ASYNC identifier_inside_body ARROW
5028 var lt = (LocatedToken) $2;
5029 Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
5030 start_anonymous (true, new ParametersCompiled (p), true, lt.Location);
5032 lambda_expression_body
5034 $$ = end_anonymous ((ParametersBlock) $5);
5035 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($3));
5037 | OPEN_PARENS_LAMBDA
5039 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
5041 opt_lambda_parameter_list CLOSE_PARENS ARROW
5043 valid_param_mod = 0;
5044 start_anonymous (true, (ParametersCompiled) $3, false, GetLocation ($1));
5046 lambda_expression_body
5048 $$ = end_anonymous ((ParametersBlock) $7);
5049 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($4), GetLocation ($5));
5051 | ASYNC OPEN_PARENS_LAMBDA
5053 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
5055 opt_lambda_parameter_list CLOSE_PARENS ARROW
5057 valid_param_mod = 0;
5058 start_anonymous (true, (ParametersCompiled) $4, true, GetLocation ($1));
5060 lambda_expression_body
5062 $$ = end_anonymous ((ParametersBlock) $8);
5063 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($2), GetLocation ($5), GetLocation ($6));
5068 : assignment_expression
5069 | non_assignment_expression
5072 non_assignment_expression
5073 : conditional_expression
5078 $$ = new ArglistAccess (GetLocation ($1));
5082 undocumented_expressions
5083 : REFVALUE OPEN_PARENS non_assignment_expression COMMA type CLOSE_PARENS
5085 $$ = new RefValueExpr ((Expression) $3, (FullNamedExpression) $5, GetLocation ($1));
5086 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4), GetLocation ($6));
5088 | REFTYPE open_parens_any expression CLOSE_PARENS
5090 $$ = new RefTypeExpr ((Expression) $3, GetLocation ($1));
5091 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
5093 | MAKEREF open_parens_any expression CLOSE_PARENS
5095 $$ = new MakeRefExpr ((Expression) $3, GetLocation ($1));
5096 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($4));
5107 $$ = new BooleanExpression ((Expression) $1);
5111 opt_primary_parameters
5116 | primary_parameters
5120 : OPEN_PARENS opt_formal_parameter_list CLOSE_PARENS
5124 // Cannot use opt_formal_parameter_list because it can be shared instance for empty parameters
5125 lbag.AppendToMember (current_container, GetLocation ($1), GetLocation ($3));
5127 if (lang_version != LanguageVersion.Experimental)
5128 FeatureIsNotAvailable (GetLocation ($1), "primary constructor");
5132 opt_primary_parameters_with_class_base
5141 | primary_parameters
5145 | primary_parameters class_base
5149 | primary_parameters class_base OPEN_PARENS
5151 ++lexer.parsing_block;
5152 current_type.PrimaryConstructorBaseArgumentsStart = GetLocation ($3);
5154 opt_argument_list CLOSE_PARENS
5156 lbag.AppendToMember (current_container, GetLocation ($6));
5157 current_type.PrimaryConstructorBaseArguments = (Arguments) $5;
5158 --lexer.parsing_block;
5174 type_declaration_name
5176 lexer.ConstraintsParsing = true;
5178 Class c = new Class (current_container, (MemberName) $6, (Modifiers) $2, (Attributes) $1);
5179 if (((c.ModFlags & Modifiers.STATIC) != 0) && lang_version == LanguageVersion.ISO_1) {
5180 FeatureIsNotAvailable (c.Location, "static classes");
5183 push_current_container (c, $3);
5184 valid_param_mod = ParameterModifierType.PrimaryConstructor;
5186 opt_primary_parameters_with_class_base
5187 opt_type_parameter_constraints_clauses
5189 valid_param_mod = 0;
5190 lexer.ConstraintsParsing = false;
5193 current_type.PrimaryConstructorParameters = (ParametersCompiled) $8;
5196 current_container.SetConstraints ((List<Constraints>) $9);
5197 lbag.AddMember (current_container, mod_locations, GetLocation ($4));
5200 current_container.PartialContainer.DocComment = Lexer.consume_doc_comment ();
5201 Lexer.doc_state = XmlCommentState.Allowed;
5204 lexer.parsing_modifiers = true;
5206 OPEN_BRACE opt_class_member_declarations CLOSE_BRACE
5208 --lexer.parsing_declaration;
5210 Lexer.doc_state = XmlCommentState.Allowed;
5215 lbag.AppendToMember (current_container, GetLocation ($11), GetLocation ($13));
5217 lbag.AppendToMember (current_container, GetLocation ($11), GetLocation ($13), GetLocation ($15));
5219 $$ = pop_current_class ();
5227 { $$ = $1; } // location
5233 mod_locations = null;
5235 lexer.parsing_modifiers = false;
5239 lexer.parsing_modifiers = false;
5245 | modifiers modifier
5247 var m1 = (Modifiers) $1;
5248 var m2 = (Modifiers) $2;
5250 if ((m1 & m2) != 0) {
5251 report.Error (1004, lexer.Location - ModifiersExtensions.Name (m2).Length,
5252 "Duplicate `{0}' modifier", ModifiersExtensions.Name (m2));
5253 } else if ((m2 & Modifiers.AccessibilityMask) != 0 && (m1 & Modifiers.AccessibilityMask) != 0 &&
5254 ((m2 | m1 & Modifiers.AccessibilityMask) != (Modifiers.PROTECTED | Modifiers.INTERNAL))) {
5255 report.Error (107, lexer.Location - ModifiersExtensions.Name (m2).Length,
5256 "More than one protection modifier specified");
5267 StoreModifierLocation ($$, GetLocation ($1));
5269 if (current_container.Kind == MemberKind.Namespace)
5270 report.Error (1530, GetLocation ($1), "Keyword `new' is not allowed on namespace elements");
5274 $$ = Modifiers.PUBLIC;
5275 StoreModifierLocation ($$, GetLocation ($1));
5279 $$ = Modifiers.PROTECTED;
5280 StoreModifierLocation ($$, GetLocation ($1));
5284 $$ = Modifiers.INTERNAL;
5285 StoreModifierLocation ($$, GetLocation ($1));
5289 $$ = Modifiers.PRIVATE;
5290 StoreModifierLocation ($$, GetLocation ($1));
5294 $$ = Modifiers.ABSTRACT;
5295 StoreModifierLocation ($$, GetLocation ($1));
5299 $$ = Modifiers.SEALED;
5300 StoreModifierLocation ($$, GetLocation ($1));
5304 $$ = Modifiers.STATIC;
5305 StoreModifierLocation ($$, GetLocation ($1));
5309 $$ = Modifiers.READONLY;
5310 StoreModifierLocation ($$, GetLocation ($1));
5314 $$ = Modifiers.VIRTUAL;
5315 StoreModifierLocation ($$, GetLocation ($1));
5319 $$ = Modifiers.OVERRIDE;
5320 StoreModifierLocation ($$, GetLocation ($1));
5324 $$ = Modifiers.EXTERN;
5325 StoreModifierLocation ($$, GetLocation ($1));
5329 $$ = Modifiers.VOLATILE;
5330 StoreModifierLocation ($$, GetLocation ($1));
5334 $$ = Modifiers.UNSAFE;
5335 StoreModifierLocation ($$, GetLocation ($1));
5336 if (!settings.Unsafe)
5337 Error_UnsafeCodeNotAllowed (GetLocation ($1));
5341 $$ = Modifiers.ASYNC;
5342 StoreModifierLocation ($$, GetLocation ($1));
5354 current_type.SetBaseTypes ((List<FullNamedExpression>) $2);
5356 | COLON type_list error
5358 Error_SyntaxError (yyToken);
5360 current_type.SetBaseTypes ((List<FullNamedExpression>) $2);
5364 opt_type_parameter_constraints_clauses
5366 | type_parameter_constraints_clauses
5372 type_parameter_constraints_clauses
5373 : type_parameter_constraints_clause
5375 var constraints = new List<Constraints> (1);
5376 constraints.Add ((Constraints) $1);
5379 | type_parameter_constraints_clauses type_parameter_constraints_clause
5381 var constraints = (List<Constraints>) $1;
5382 Constraints new_constraint = (Constraints)$2;
5384 foreach (Constraints c in constraints) {
5385 if (new_constraint.TypeParameter.Value == c.TypeParameter.Value) {
5386 report.Error (409, new_constraint.Location,
5387 "A constraint clause has already been specified for type parameter `{0}'",
5388 new_constraint.TypeParameter.Value);
5392 constraints.Add (new_constraint);
5397 type_parameter_constraints_clause
5398 : WHERE IDENTIFIER COLON type_parameter_constraints
5400 var lt = (LocatedToken) $2;
5401 $$ = new Constraints (new SimpleMemberName (lt.Value, lt.Location), (List<FullNamedExpression>) $4, GetLocation ($1));
5402 lbag.AddLocation ($$, GetLocation ($3));
5404 | WHERE IDENTIFIER error
5406 Error_SyntaxError (yyToken);
5408 var lt = (LocatedToken) $2;
5409 $$ = new Constraints (new SimpleMemberName (lt.Value, lt.Location), null, GetLocation ($1));
5413 type_parameter_constraints
5414 : type_parameter_constraint
5416 var constraints = new List<FullNamedExpression> (1);
5417 constraints.Add ((FullNamedExpression) $1);
5420 | type_parameter_constraints COMMA type_parameter_constraint
5422 var constraints = (List<FullNamedExpression>) $1;
5423 var prev = constraints [constraints.Count - 1] as SpecialContraintExpr;
5424 if (prev != null && (prev.Constraint & SpecialConstraint.Constructor) != 0) {
5425 report.Error (401, GetLocation ($2), "The `new()' constraint must be the last constraint specified");
5428 prev = $3 as SpecialContraintExpr;
5430 if ((prev.Constraint & (SpecialConstraint.Class | SpecialConstraint.Struct)) != 0) {
5431 report.Error (449, prev.Location, "The `class' or `struct' constraint must be the first constraint specified");
5433 prev = constraints [0] as SpecialContraintExpr;
5434 if (prev != null && (prev.Constraint & SpecialConstraint.Struct) != 0) {
5435 report.Error (451, GetLocation ($3), "The `new()' constraint cannot be used with the `struct' constraint");
5440 constraints.Add ((FullNamedExpression) $3);
5445 type_parameter_constraint
5448 if ($1 is ComposedCast)
5449 report.Error (706, GetLocation ($1), "Invalid constraint type `{0}'", ((ComposedCast)$1).GetSignatureForError ());
5453 | NEW OPEN_PARENS CLOSE_PARENS
5455 $$ = new SpecialContraintExpr (SpecialConstraint.Constructor, GetLocation ($1));
5456 lbag.AddLocation ($$, GetLocation ($2), GetLocation ($3));
5460 $$ = new SpecialContraintExpr (SpecialConstraint.Class, GetLocation ($1));
5464 $$ = new SpecialContraintExpr (SpecialConstraint.Struct, GetLocation ($1));
5468 opt_type_parameter_variance
5473 | type_parameter_variance
5475 if (lang_version <= LanguageVersion.V_3)
5476 FeatureIsNotAvailable (lexer.Location, "generic type variance");
5482 type_parameter_variance
5485 $$ = new VarianceDecl (Variance.Covariant, GetLocation ($1));
5489 $$ = new VarianceDecl (Variance.Contravariant, GetLocation ($1));
5498 // A block is "contained" on the following places:
5500 // property_declaration as part of the accessor body (get/set)
5501 // operator_declaration
5502 // constructor_declaration
5503 // destructor_declaration
5504 // event_declaration as part of add_accessor_declaration or remove_accessor_declaration
5509 ++lexer.parsing_block;
5510 start_block (GetLocation ($1));
5512 opt_statement_list block_end
5521 --lexer.parsing_block;
5522 $$ = end_block (GetLocation ($1));
5524 | COMPLETE_COMPLETION
5526 --lexer.parsing_block;
5527 $$ = end_block (lexer.Location);
5535 ++lexer.parsing_block;
5536 current_block.StartLocation = GetLocation ($1);
5538 opt_statement_list CLOSE_BRACE
5540 --lexer.parsing_block;
5541 $$ = end_block (GetLocation ($4));
5552 | statement_list statement
5556 : block_variable_declaration
5558 current_block.AddStatement ((Statement) $1);
5560 | valid_declaration_statement
5562 current_block.AddStatement ((Statement) $1);
5567 Error_SyntaxError (yyToken);
5573 // The interactive_statement and its derivatives are only
5574 // used to provide a special version of `expression_statement'
5575 // that has a side effect of assigning the expression to
5578 interactive_statement_list
5579 : interactive_statement
5580 | interactive_statement_list interactive_statement
5583 interactive_statement
5584 : block_variable_declaration
5586 current_block.AddStatement ((Statement) $1);
5588 | interactive_valid_declaration_statement
5590 current_block.AddStatement ((Statement) $1);
5595 valid_declaration_statement
5598 | expression_statement
5599 | selection_statement
5600 | iteration_statement
5604 | unchecked_statement
5611 interactive_valid_declaration_statement
5614 | interactive_expression_statement
5615 | selection_statement
5616 | iteration_statement
5620 | unchecked_statement
5628 : valid_declaration_statement
5629 | block_variable_declaration
5631 report.Error (1023, GetLocation ($1), "An embedded statement may not be a declaration or labeled statement");
5636 report.Error (1023, GetLocation ($1), "An embedded statement may not be a declaration or labeled statement");
5641 Error_SyntaxError (yyToken);
5642 $$ = new EmptyStatement (GetLocation ($1));
5649 // Uses lexer.Location because semicolon location is not kept in quick mode
5650 $$ = new EmptyStatement (lexer.Location);
5655 : identifier_inside_body COLON
5657 var lt = (LocatedToken) $1;
5658 LabeledStatement labeled = new LabeledStatement (lt.Value, current_block, lt.Location);
5659 lbag.AddLocation (labeled, GetLocation ($2));
5660 current_block.AddLabel (labeled);
5661 current_block.AddStatement (labeled);
5667 : variable_type_simple
5668 | variable_type_simple rank_specifiers
5671 $1 = new SimpleName ("var", ((VarExpr) $1).Location);
5673 $$ = new ComposedCast ((FullNamedExpression) $1, (ComposedTypeSpecifier) $2);
5678 * The following is from Rhys' grammar:
5679 * > Types in local variable declarations must be recognized as
5680 * > expressions to prevent reduce/reduce errors in the grammar.
5681 * > The expressions are converted into types during semantic analysis.
5683 variable_type_simple
5684 : type_name_expression opt_nullable
5686 // Ok, the above "primary_expression" is there to get rid of
5687 // both reduce/reduce and shift/reduces in the grammar, it should
5688 // really just be "type_name". If you use type_name, a reduce/reduce
5689 // creeps up. If you use namespace_or_type_name (which is all we need
5690 // really) two shift/reduces appear.
5693 // So the super-trick is that primary_expression
5694 // can only be either a SimpleName or a MemberAccess.
5695 // The MemberAccess case arises when you have a fully qualified type-name like :
5697 // SimpleName is when you have
5700 var expr = (ATypeNameExpression) $1;
5702 if (expr.Name == "var" && expr is SimpleName)
5703 $$ = new VarExpr (expr.Location);
5707 $$ = new ComposedCast (expr, (ComposedTypeSpecifier) $2);
5710 | type_name_expression pointer_stars
5712 var expr = (ATypeNameExpression) $1;
5713 $$ = new ComposedCast (expr, (ComposedTypeSpecifier) $2);
5715 | builtin_type_expression
5721 | pointer_star pointer_stars
5723 ((ComposedTypeSpecifier) $1).Next = (ComposedTypeSpecifier) $2;
5731 $$ = ComposedTypeSpecifier.CreatePointer (GetLocation ($1));
5735 identifier_inside_body
5739 $$ = Error_AwaitAsIdentifier ($1);
5743 block_variable_declaration
5744 : variable_type identifier_inside_body
5746 var lt = (LocatedToken) $2;
5747 var li = new LocalVariable (current_block, lt.Value, lt.Location);
5748 current_block.AddLocalName (li);
5749 current_variable = new BlockVariable ((FullNamedExpression) $1, li);
5751 opt_local_variable_initializer opt_variable_declarators SEMICOLON
5753 $$ = current_variable;
5754 current_variable = null;
5756 lbag.AddLocation ($$, PopLocation (), GetLocation ($6));
5758 lbag.AddLocation ($$, GetLocation ($6));
5760 | CONST variable_type identifier_inside_body
5762 var lt = (LocatedToken) $3;
5763 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.Constant, lt.Location);
5764 current_block.AddLocalName (li);
5765 current_variable = new BlockConstant ((FullNamedExpression) $2, li);
5767 const_variable_initializer opt_const_declarators SEMICOLON
5769 $$ = current_variable;
5770 current_variable = null;
5771 lbag.AddLocation ($$, GetLocation ($1), GetLocation ($7));
5775 opt_local_variable_initializer
5777 | ASSIGN block_variable_initializer
5779 current_variable.Initializer = (Expression) $2;
5780 PushLocation (GetLocation ($1));
5781 $$ = current_variable;
5785 if (yyToken == Token.OPEN_BRACKET_EXPR) {
5786 report.Error (650, lexer.Location,
5787 "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");
5789 Error_SyntaxError (yyToken);
5794 opt_variable_declarators
5796 | variable_declarators
5799 opt_using_or_fixed_variable_declarators
5801 | variable_declarators
5803 foreach (var d in current_variable.Declarators) {
5804 if (d.Initializer == null)
5805 Error_MissingInitializer (d.Variable.Location);
5810 variable_declarators
5811 : variable_declarator
5812 | variable_declarators variable_declarator
5816 : COMMA identifier_inside_body
5818 var lt = (LocatedToken) $2;
5819 var li = new LocalVariable (current_variable.Variable, lt.Value, lt.Location);
5820 var d = new BlockVariableDeclarator (li, null);
5821 current_variable.AddDeclarator (d);
5822 current_block.AddLocalName (li);
5823 lbag.AddLocation (d, GetLocation ($1));
5825 | COMMA identifier_inside_body ASSIGN block_variable_initializer
5827 var lt = (LocatedToken) $2;
5828 var li = new LocalVariable (current_variable.Variable, lt.Value, lt.Location);
5829 var d = new BlockVariableDeclarator (li, (Expression) $4);
5830 current_variable.AddDeclarator (d);
5831 current_block.AddLocalName (li);
5832 lbag.AddLocation (d, GetLocation ($1), GetLocation ($3));
5836 const_variable_initializer
5839 report.Error (145, lexer.Location, "A const field requires a value to be provided");
5841 | ASSIGN constant_initializer_expr
5843 current_variable.Initializer = (Expression) $2;
5847 opt_const_declarators
5854 | const_declarators const_declarator
5858 : COMMA identifier_inside_body ASSIGN constant_initializer_expr
5860 var lt = (LocatedToken) $2;
5861 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.Constant, lt.Location);
5862 var d = new BlockVariableDeclarator (li, (Expression) $4);
5863 current_variable.AddDeclarator (d);
5864 current_block.AddLocalName (li);
5865 lbag.AddLocation (d, GetLocation ($1), GetLocation ($3));
5869 block_variable_initializer
5870 : variable_initializer
5871 | STACKALLOC simple_type OPEN_BRACKET_EXPR expression CLOSE_BRACKET
5873 $$ = new StackAlloc ((Expression) $2, (Expression) $4, GetLocation ($1));
5874 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($5));
5876 | STACKALLOC simple_type
5878 report.Error (1575, GetLocation ($1), "A stackalloc expression requires [] after type");
5879 $$ = new StackAlloc ((Expression) $2, null, GetLocation ($1));
5883 expression_statement
5884 : statement_expression SEMICOLON
5887 lbag.AddStatement ($$, GetLocation ($2));
5889 | statement_expression COMPLETE_COMPLETION { $$ = $1; }
5890 | statement_expression CLOSE_BRACE
5893 report.Error (1002, GetLocation ($2), "; expected");
5894 lexer.putback ('}');
5898 interactive_expression_statement
5899 : interactive_statement_expression SEMICOLON { $$ = $1; }
5900 | interactive_statement_expression COMPLETE_COMPLETION { $$ = $1; }
5904 // We have to do the wrapping here and not in the case above,
5905 // because statement_expression is used for example in for_statement
5907 statement_expression
5910 ExpressionStatement s = $1 as ExpressionStatement;
5912 var expr = $1 as Expression;
5913 $$ = new StatementErrorExpression (expr);
5915 $$ = new StatementExpression (s);
5920 interactive_statement_expression
5923 Expression expr = (Expression) $1;
5924 $$ = new StatementExpression (new OptionalAssign (expr, lexer.Location));
5928 Error_SyntaxError (yyToken);
5929 $$ = new EmptyStatement (GetLocation ($1));
5939 : IF open_parens_any boolean_expression CLOSE_PARENS
5942 if ($5 is EmptyStatement)
5943 Warning_EmptyStatement (GetLocation ($5));
5945 $$ = new If ((BooleanExpression) $3, (Statement) $5, GetLocation ($1));
5946 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
5948 | IF open_parens_any boolean_expression CLOSE_PARENS
5949 embedded_statement ELSE embedded_statement
5951 $$ = new If ((BooleanExpression) $3, (Statement) $5, (Statement) $7, GetLocation ($1));
5952 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4), GetLocation ($6));
5954 if ($5 is EmptyStatement)
5955 Warning_EmptyStatement (GetLocation ($5));
5956 if ($7 is EmptyStatement)
5957 Warning_EmptyStatement (GetLocation ($7));
5959 | IF open_parens_any boolean_expression error
5961 Error_SyntaxError (yyToken);
5963 $$ = new If ((BooleanExpression) $3, null, GetLocation ($1));
5964 lbag.AddStatement ($$, GetLocation ($2));
5969 : SWITCH open_parens_any expression CLOSE_PARENS OPEN_BRACE
5971 start_block (GetLocation ($5));
5973 opt_switch_sections CLOSE_BRACE
5975 $$ = new Switch ((Expression) $3, (ExplicitBlock) current_block.Explicit, GetLocation ($1));
5976 end_block (GetLocation ($8));
5977 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
5979 | SWITCH open_parens_any expression error
5981 Error_SyntaxError (yyToken);
5983 $$ = new Switch ((Expression) $3, null, GetLocation ($1));
5984 lbag.AddStatement ($$, GetLocation ($2));
5991 report.Warning (1522, 1, current_block.StartLocation, "Empty switch block");
5998 | switch_sections switch_section
6001 Error_SyntaxError (yyToken);
6006 : switch_labels statement_list
6012 var label = (SwitchLabel) $1;
6013 label.SectionStart = true;
6014 current_block.AddStatement (label);
6016 | switch_labels switch_label
6018 current_block.AddStatement ((Statement) $2);
6023 : CASE constant_expression COLON
6025 $$ = new SwitchLabel ((Expression) $2, GetLocation ($1));
6026 lbag.AddLocation ($$, GetLocation ($3));
6028 | CASE constant_expression error
6030 Error_SyntaxError (yyToken);
6031 $$ = new SwitchLabel ((Expression) $2, GetLocation ($1));
6034 | CASE pattern_expr_invocation COLON
6036 if (lang_version != LanguageVersion.Experimental)
6037 FeatureIsNotAvailable (GetLocation ($2), "pattern matching");
6039 $$ = new SwitchLabel ((Expression) $2, GetLocation ($1)) {
6040 PatternMatching = true
6042 lbag.AddLocation ($$, GetLocation ($3));
6047 $$ = new SwitchLabel (null, GetLocation ($1));
6059 : WHILE open_parens_any boolean_expression CLOSE_PARENS embedded_statement
6061 if ($5 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6062 Warning_EmptyStatement (GetLocation ($5));
6064 $$ = new While ((BooleanExpression) $3, (Statement) $5, GetLocation ($1));
6065 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6067 | WHILE open_parens_any boolean_expression error
6069 Error_SyntaxError (yyToken);
6071 $$ = new While ((BooleanExpression) $3, null, GetLocation ($1));
6072 lbag.AddStatement ($$, GetLocation ($2));
6077 : DO embedded_statement WHILE open_parens_any boolean_expression CLOSE_PARENS SEMICOLON
6079 $$ = new Do ((Statement) $2, (BooleanExpression) $5, GetLocation ($1), GetLocation ($3));
6080 lbag.AddStatement ($$, GetLocation ($3), GetLocation ($4), GetLocation ($6), GetLocation ($7));
6082 | DO embedded_statement error
6084 Error_SyntaxError (yyToken);
6085 $$ = new Do ((Statement) $2, null, GetLocation ($1), Location.Null);
6087 | DO embedded_statement WHILE open_parens_any boolean_expression error
6089 Error_SyntaxError (yyToken);
6091 $$ = new Do ((Statement) $2, (BooleanExpression) $5, GetLocation ($1), GetLocation ($3));
6092 lbag.AddStatement ($$, GetLocation ($3), GetLocation ($4));
6097 : FOR open_parens_any
6099 start_block (GetLocation ($2));
6100 current_block.IsCompilerGenerated = true;
6101 For f = new For (GetLocation ($1));
6102 current_block.AddStatement (f);
6111 // Has to use be extra rule to recover started block
6113 : opt_for_initializer SEMICOLON
6115 ((For) $0).Initializer = (Statement) $1;
6117 // Pass the "For" object to the iterator_part4
6118 oob_stack.Push ($0);
6120 for_condition_and_iterator_part
6123 var locations = (Tuple<Location,Location>) $4;
6125 if ($5 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6126 Warning_EmptyStatement (GetLocation ($5));
6129 f.Statement = (Statement) $5;
6130 lbag.AddStatement (f, current_block.StartLocation, GetLocation ($2), GetLocation (locations.Item1), GetLocation (locations.Item2));
6132 $$ = end_block (GetLocation ($2));
6136 Error_SyntaxError (yyToken);
6137 $$ = end_block (current_block.StartLocation);
6141 for_condition_and_iterator_part
6142 : opt_for_condition SEMICOLON
6144 For f = (For) oob_stack.Peek ();
6145 f.Condition = (BooleanExpression) $1;
6148 $$ = new Tuple<Location,Location> (GetLocation ($2), (Location) $4);
6151 // Handle errors in the case of opt_for_condition being followed by
6152 // a close parenthesis
6153 | opt_for_condition close_parens_close_brace {
6154 report.Error (1525, GetLocation ($2), "Unexpected symbol `}'");
6155 For f = (For) oob_stack.Peek ();
6156 f.Condition = (BooleanExpression) $1;
6157 $$ = new Tuple<Location,Location> (GetLocation ($2), GetLocation ($2));
6162 : opt_for_iterator CLOSE_PARENS {
6163 For f = (For) oob_stack.Peek ();
6164 f.Iterator = (Statement) $1;
6165 $$ = GetLocation ($2);
6167 | opt_for_iterator CLOSE_BRACE {
6168 report.Error (1525, GetLocation ($2), "Unexpected symbol expected ')'");
6169 For f = (For) oob_stack.Peek ();
6170 f.Iterator = (Statement) $1;
6171 $$ = GetLocation ($2);
6175 close_parens_close_brace
6177 | CLOSE_BRACE { lexer.putback ('}'); }
6181 : /* empty */ { $$ = new EmptyStatement (lexer.Location); }
6186 : variable_type identifier_inside_body
6188 var lt = (LocatedToken) $2;
6189 var li = new LocalVariable (current_block, lt.Value, lt.Location);
6190 current_block.AddLocalName (li);
6191 current_variable = new BlockVariable ((FullNamedExpression) $1, li);
6193 opt_local_variable_initializer opt_variable_declarators
6195 $$ = current_variable;
6197 lbag.AddLocation (current_variable, PopLocation ());
6199 current_variable = null;
6201 | statement_expression_list
6205 : /* empty */ { $$ = null; }
6206 | boolean_expression
6210 : /* empty */ { $$ = new EmptyStatement (lexer.Location); }
6215 : statement_expression_list
6218 statement_expression_list
6219 : statement_expression
6220 | statement_expression_list COMMA statement_expression
6222 var sl = $1 as StatementList;
6224 sl = new StatementList ((Statement) $1, (Statement) $3);
6225 lbag.AddStatement (sl, GetLocation ($2));
6227 sl.Add ((Statement) $3);
6228 lbag.AppendTo (sl, GetLocation ($2));
6236 : FOREACH open_parens_any type error
6238 report.Error (230, GetLocation ($1), "Type and identifier are both required in a foreach statement");
6240 start_block (GetLocation ($2));
6241 current_block.IsCompilerGenerated = true;
6243 Foreach f = new Foreach ((Expression) $3, null, null, null, null, GetLocation ($1));
6244 current_block.AddStatement (f);
6246 lbag.AddStatement (f, GetLocation ($2));
6247 $$ = end_block (GetLocation ($4));
6249 | FOREACH open_parens_any type identifier_inside_body error
6251 Error_SyntaxError (yyToken);
6253 start_block (GetLocation ($2));
6254 current_block.IsCompilerGenerated = true;
6256 var lt = (LocatedToken) $4;
6257 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.ForeachVariable | LocalVariable.Flags.Used, lt.Location);
6258 current_block.AddLocalName (li);
6260 Foreach f = new Foreach ((Expression) $3, li, null, null, null, GetLocation ($1));
6261 current_block.AddStatement (f);
6263 lbag.AddStatement (f, GetLocation ($2));
6264 $$ = end_block (GetLocation ($5));
6266 | FOREACH open_parens_any type identifier_inside_body IN expression CLOSE_PARENS
6268 start_block (GetLocation ($2));
6269 current_block.IsCompilerGenerated = true;
6271 var lt = (LocatedToken) $4;
6272 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.ForeachVariable | LocalVariable.Flags.Used, lt.Location);
6273 current_block.AddLocalName (li);
6278 if ($9 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6279 Warning_EmptyStatement (GetLocation ($9));
6281 Foreach f = new Foreach ((Expression) $3, (LocalVariable) $8, (Expression) $6, (Statement) $9, current_block, GetLocation ($1));
6282 lbag.AddStatement (f, GetLocation ($2), GetLocation ($5), GetLocation ($7));
6283 end_block (GetLocation ($7));
6291 | continue_statement
6301 $$ = new Break (GetLocation ($1));
6302 lbag.AddStatement ($$, GetLocation ($2));
6307 : CONTINUE SEMICOLON
6309 $$ = new Continue (GetLocation ($1));
6310 lbag.AddStatement ($$, GetLocation ($2));
6314 Error_SyntaxError (yyToken);
6315 $$ = new Continue (GetLocation ($1));
6320 : GOTO identifier_inside_body SEMICOLON
6322 var lt = (LocatedToken) $2;
6323 $$ = new Goto (lt.Value, GetLocation ($1));
6324 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($3));
6326 | GOTO CASE constant_expression SEMICOLON
6328 $$ = new GotoCase ((Expression) $3, GetLocation ($1));
6329 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6331 | GOTO DEFAULT SEMICOLON
6333 $$ = new GotoDefault (GetLocation ($1));
6334 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($3));
6339 : RETURN opt_expression SEMICOLON
6341 $$ = new Return ((Expression) $2, GetLocation ($1));
6342 lbag.AddStatement ($$, GetLocation ($3));
6344 | RETURN expression error
6346 Error_SyntaxError (yyToken);
6347 $$ = new Return ((Expression) $2, GetLocation ($1));
6351 Error_SyntaxError (yyToken);
6352 $$ = new Return (null, GetLocation ($1));
6357 : THROW opt_expression SEMICOLON
6359 $$ = new Throw ((Expression) $2, GetLocation ($1));
6360 lbag.AddStatement ($$, GetLocation ($3));
6362 | THROW expression error
6364 Error_SyntaxError (yyToken);
6365 $$ = new Throw ((Expression) $2, GetLocation ($1));
6369 Error_SyntaxError (yyToken);
6370 $$ = new Throw (null, GetLocation ($1));
6375 : identifier_inside_body RETURN opt_expression SEMICOLON
6377 var lt = (LocatedToken) $1;
6378 string s = lt.Value;
6380 report.Error (1003, lt.Location, "; expected");
6381 } else if ($3 == null) {
6382 report.Error (1627, GetLocation ($4), "Expression expected after yield return");
6383 } else if (lang_version == LanguageVersion.ISO_1){
6384 FeatureIsNotAvailable (lt.Location, "iterators");
6387 current_block.Explicit.RegisterIteratorYield ();
6388 $$ = new Yield ((Expression) $3, lt.Location);
6389 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6391 | identifier_inside_body RETURN expression error
6393 Error_SyntaxError (yyToken);
6395 var lt = (LocatedToken) $1;
6396 string s = lt.Value;
6398 report.Error (1003, lt.Location, "; expected");
6399 } else if ($3 == null) {
6400 report.Error (1627, GetLocation ($4), "Expression expected after yield return");
6401 } else if (lang_version == LanguageVersion.ISO_1){
6402 FeatureIsNotAvailable (lt.Location, "iterators");
6405 current_block.Explicit.RegisterIteratorYield ();
6406 $$ = new Yield ((Expression) $3, lt.Location);
6407 lbag.AddStatement ($$, GetLocation ($2));
6409 | identifier_inside_body BREAK SEMICOLON
6411 var lt = (LocatedToken) $1;
6412 string s = lt.Value;
6414 report.Error (1003, lt.Location, "; expected");
6415 } else if (lang_version == LanguageVersion.ISO_1){
6416 FeatureIsNotAvailable (lt.Location, "iterators");
6419 current_block.ParametersBlock.TopBlock.IsIterator = true;
6420 $$ = new YieldBreak (lt.Location);
6421 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($3));
6431 : TRY block catch_clauses
6433 $$ = new TryCatch ((Block) $2, (List<Catch>) $3, GetLocation ($1), false);
6435 | TRY block FINALLY block
6437 $$ = new TryFinally ((Statement) $2, (ExplicitBlock) $4, GetLocation ($1));
6438 lbag.AddStatement ($$, GetLocation ($3));
6440 | TRY block catch_clauses FINALLY block
6442 $$ = new TryFinally (new TryCatch ((Block) $2, (List<Catch>) $3, Location.Null, true), (ExplicitBlock) $5, GetLocation ($1));
6443 lbag.AddStatement ($$, GetLocation ($4));
6447 Error_SyntaxError (1524, yyToken);
6448 $$ = new TryCatch ((Block) $2, null, GetLocation ($1), false);
6455 var l = new List<Catch> (2);
6460 | catch_clauses catch_clause
6462 var l = (List<Catch>) $1;
6464 Catch c = (Catch) $2;
6465 var prev_catch = l [l.Count - 1];
6466 if (prev_catch.IsGeneral && prev_catch.Filter == null) {
6467 report.Error (1017, c.loc, "Try statement already has an empty catch block");
6477 | identifier_inside_body
6481 : CATCH opt_catch_filter block
6483 var c = new Catch ((ExplicitBlock) $3, GetLocation ($1));
6484 c.Filter = (CatchFilterExpression) $2;
6487 | CATCH open_parens_any type opt_identifier CLOSE_PARENS
6489 start_block (GetLocation ($2));
6490 var c = new Catch ((ExplicitBlock) current_block, GetLocation ($1));
6491 c.TypeExpression = (FullNamedExpression) $3;
6494 var lt = (LocatedToken) $4;
6495 c.Variable = new LocalVariable (current_block, lt.Value, lt.Location);
6496 current_block.AddLocalName (c.Variable);
6499 lbag.AddLocation (c, GetLocation ($2), GetLocation ($5));
6501 lexer.parsing_catch_when = true;
6503 opt_catch_filter_or_error
6505 ((Catch) $6).Filter = (CatchFilterExpression) $7;
6508 | CATCH open_parens_any error
6510 if (yyToken == Token.CLOSE_PARENS) {
6511 report.Error (1015, lexer.Location,
6512 "A type that derives from `System.Exception', `object', or `string' expected");
6514 Error_SyntaxError (yyToken);
6517 $$ = new Catch (null, GetLocation ($1));
6521 opt_catch_filter_or_error
6522 : opt_catch_filter block_prepared
6528 end_block (Location.Null);
6529 Error_SyntaxError (yyToken);
6536 lexer.parsing_catch_when = false;
6540 lexer.parsing_catch_when = false;
6542 open_parens_any expression CLOSE_PARENS
6544 if (lang_version <= LanguageVersion.V_5)
6545 FeatureIsNotAvailable (GetLocation ($1), "exception filter");
6547 $$ = new CatchFilterExpression ((Expression) $4, GetLocation ($1));
6548 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($5));
6555 $$ = new Checked ((Block) $2, GetLocation ($1));
6562 $$ = new Unchecked ((Block) $2, GetLocation ($1));
6569 if (!settings.Unsafe)
6570 Error_UnsafeCodeNotAllowed (GetLocation ($1));
6572 $$ = new Unsafe ((Block) $3, GetLocation ($1));
6577 : LOCK open_parens_any expression CLOSE_PARENS embedded_statement
6579 if ($5 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6580 Warning_EmptyStatement (GetLocation ($5));
6582 $$ = new Lock ((Expression) $3, (Statement) $5, GetLocation ($1));
6583 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6585 | LOCK open_parens_any expression error
6587 Error_SyntaxError (yyToken);
6589 $$ = new Lock ((Expression) $3, null, GetLocation ($1));
6590 lbag.AddStatement ($$, GetLocation ($2));
6595 : FIXED open_parens_any variable_type identifier_inside_body
6597 start_block (GetLocation ($2));
6599 current_block.IsCompilerGenerated = true;
6600 var lt = (LocatedToken) $4;
6601 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.FixedVariable | LocalVariable.Flags.Used, lt.Location);
6602 current_block.AddLocalName (li);
6603 current_variable = new Fixed.VariableDeclaration ((FullNamedExpression) $3, li);
6605 using_or_fixed_variable_initializer opt_using_or_fixed_variable_declarators CLOSE_PARENS
6607 $$ = current_variable;
6608 current_variable = null;
6612 if ($10 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6613 Warning_EmptyStatement (GetLocation ($10));
6615 Fixed f = new Fixed ((Fixed.VariableDeclaration) $9, (Statement) $10, GetLocation ($1));
6616 current_block.AddStatement (f);
6617 lbag.AddStatement (f, GetLocation ($2), GetLocation ($8));
6618 $$ = end_block (GetLocation ($8));
6623 : USING open_parens_any variable_type identifier_inside_body
6625 start_block (GetLocation ($2));
6627 current_block.IsCompilerGenerated = true;
6628 var lt = (LocatedToken) $4;
6629 var li = new LocalVariable (current_block, lt.Value, LocalVariable.Flags.UsingVariable | LocalVariable.Flags.Used, lt.Location);
6630 current_block.AddLocalName (li);
6631 current_variable = new Using.VariableDeclaration ((FullNamedExpression) $3, li);
6633 using_initialization CLOSE_PARENS
6635 $$ = current_variable;
6636 current_variable = null;
6640 if ($9 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6641 Warning_EmptyStatement (GetLocation ($9));
6643 Using u = new Using ((Using.VariableDeclaration) $8, (Statement) $9, GetLocation ($1));
6644 current_block.AddStatement (u);
6645 $$ = end_block (GetLocation ($7));
6647 | USING open_parens_any expression CLOSE_PARENS embedded_statement
6649 if ($5 is EmptyStatement && lexer.peek_token () == Token.OPEN_BRACE)
6650 Warning_EmptyStatement (GetLocation ($5));
6652 $$ = new Using ((Expression) $3, (Statement) $5, GetLocation ($1));
6653 lbag.AddStatement ($$, GetLocation ($2), GetLocation ($4));
6655 | USING open_parens_any expression error
6657 Error_SyntaxError (yyToken);
6659 $$ = new Using ((Expression) $3, null, GetLocation ($1));
6660 lbag.AddStatement ($$, GetLocation ($2));
6664 using_initialization
6665 : using_or_fixed_variable_initializer opt_using_or_fixed_variable_declarators
6668 // It has to be here for the parent to safely restore artificial block
6669 Error_SyntaxError (yyToken);
6673 using_or_fixed_variable_initializer
6676 Error_MissingInitializer (lexer.Location);
6678 | ASSIGN variable_initializer
6680 current_variable.Initializer = (Expression) $2;
6681 $$ = current_variable;
6689 : first_from_clause query_body
6691 lexer.query_parsing = false;
6693 Linq.AQueryClause from = $1 as Linq.AQueryClause;
6695 from.Tail.Next = (Linq.AQueryClause)$2;
6698 current_block.SetEndLocation (lexer.Location);
6699 current_block = current_block.Parent;
6701 | nested_from_clause query_body
6703 Linq.AQueryClause from = $1 as Linq.AQueryClause;
6705 from.Tail.Next = (Linq.AQueryClause)$2;
6708 current_block.SetEndLocation (lexer.Location);
6709 current_block = current_block.Parent;
6712 // Bubble up COMPLETE_COMPLETION productions
6713 | first_from_clause COMPLETE_COMPLETION {
6714 lexer.query_parsing = false;
6717 current_block.SetEndLocation (lexer.Location);
6718 current_block = current_block.Parent;
6720 | nested_from_clause COMPLETE_COMPLETION {
6722 current_block.SetEndLocation (lexer.Location);
6723 current_block = current_block.Parent;
6728 : FROM_FIRST identifier_inside_body IN expression
6730 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6732 var lt = (LocatedToken) $2;
6733 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
6734 var clause = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, (Expression)$4, rv, GetLocation ($1));
6735 lbag.AddLocation (clause, GetLocation ($3));
6736 $$ = new Linq.QueryExpression (clause);
6738 | FROM_FIRST type identifier_inside_body IN expression
6740 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6742 var lt = (LocatedToken) $3;
6743 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
6744 var clause = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, (Expression)$5, rv, GetLocation ($1)) {
6745 IdentifierType = (FullNamedExpression)$2
6747 lbag.AddLocation (clause, GetLocation ($4));
6748 $$ = new Linq.QueryExpression (clause);
6753 : FROM identifier_inside_body IN expression
6755 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6757 var lt = (LocatedToken) $2;
6758 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
6759 var clause = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, (Expression)$4, rv, GetLocation ($1));
6760 lbag.AddLocation (clause, GetLocation ($3));
6761 $$ = new Linq.QueryExpression (clause);
6763 | FROM type identifier_inside_body IN expression
6765 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6767 var lt = (LocatedToken) $3;
6768 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
6769 var clause = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, (Expression)$5, rv, GetLocation ($1)) {
6770 IdentifierType = (FullNamedExpression)$2
6772 lbag.AddLocation (clause, GetLocation ($4));
6773 $$ = new Linq.QueryExpression (clause);
6778 : FROM identifier_inside_body IN
6780 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6784 var lt = (LocatedToken) $2;
6785 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
6786 $$ = new Linq.SelectMany ((Linq.QueryBlock)current_block, sn, (Expression)$5, GetLocation ($1));
6788 current_block.SetEndLocation (lexer.Location);
6789 current_block = current_block.Parent;
6791 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
6792 lbag.AddLocation ($$, GetLocation ($3));
6794 | FROM type identifier_inside_body IN
6796 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6800 var lt = (LocatedToken) $3;
6801 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
6803 $$ = new Linq.SelectMany ((Linq.QueryBlock)current_block, sn, (Expression)$6, GetLocation ($1)) {
6804 IdentifierType = (FullNamedExpression)$2
6807 current_block.SetEndLocation (lexer.Location);
6808 current_block = current_block.Parent;
6810 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
6812 lbag.AddLocation ($$, GetLocation ($4));
6817 : query_body_clauses select_or_group_clause opt_query_continuation
6819 Linq.AQueryClause head = (Linq.AQueryClause)$2;
6822 head.Next = (Linq.AQueryClause)$3;
6825 Linq.AQueryClause clause = (Linq.AQueryClause)$1;
6826 clause.Tail.Next = head;
6832 | select_or_group_clause opt_query_continuation
6834 Linq.AQueryClause head = (Linq.AQueryClause)$2;
6837 Linq.AQueryClause clause = (Linq.AQueryClause)$1;
6838 clause.Tail.Next = head;
6844 | query_body_clauses COMPLETE_COMPLETION
6845 | query_body_clauses error
6847 report.Error (742, GetLocation ($2), "Unexpected symbol `{0}'. A query body must end with select or group clause", GetSymbolName (yyToken));
6852 Error_SyntaxError (yyToken);
6857 select_or_group_clause
6860 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6864 $$ = new Linq.Select ((Linq.QueryBlock)current_block, (Expression)$3, GetLocation ($1));
6866 current_block.SetEndLocation (lexer.Location);
6867 current_block = current_block.Parent;
6871 if (linq_clause_blocks == null)
6872 linq_clause_blocks = new Stack<Linq.QueryBlock> ();
6874 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6875 linq_clause_blocks.Push ((Linq.QueryBlock)current_block);
6879 current_block.SetEndLocation (lexer.Location);
6880 current_block = current_block.Parent;
6882 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6886 var obj = (object[]) $5;
6888 $$ = new Linq.GroupBy ((Linq.QueryBlock)current_block, (Expression)$3, linq_clause_blocks.Pop (), (Expression)obj[0], GetLocation ($1));
6889 lbag.AddLocation ($$, (Location) obj[1]);
6891 current_block.SetEndLocation (lexer.Location);
6892 current_block = current_block.Parent;
6897 : BY expression_or_error
6899 $$ = new object[] { $2, GetLocation ($1) };
6903 Error_SyntaxError (yyToken);
6904 $$ = new object[2] { null, Location.Null };
6910 | query_body_clauses query_body_clause
6912 ((Linq.AQueryClause)$1).Tail.Next = (Linq.AQueryClause)$2;
6926 : LET identifier_inside_body ASSIGN
6928 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6932 var lt = (LocatedToken) $2;
6933 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
6934 $$ = new Linq.Let ((Linq.QueryBlock) current_block, sn, (Expression)$5, GetLocation ($1));
6935 lbag.AddLocation ($$, GetLocation ($3));
6937 current_block.SetEndLocation (lexer.Location);
6938 current_block = current_block.Parent;
6940 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
6947 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6951 $$ = new Linq.Where ((Linq.QueryBlock)current_block, (Expression)$3, GetLocation ($1));
6953 current_block.SetEndLocation (lexer.Location);
6954 current_block = current_block.Parent;
6959 : JOIN identifier_inside_body IN
6961 if (linq_clause_blocks == null)
6962 linq_clause_blocks = new Stack<Linq.QueryBlock> ();
6964 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6965 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
6967 expression_or_error ON
6969 current_block.SetEndLocation (lexer.Location);
6970 current_block = current_block.Parent;
6972 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6973 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
6975 expression_or_error EQUALS
6977 current_block.AddStatement (new ContextualReturn ((Expression) $8));
6978 current_block.SetEndLocation (lexer.Location);
6979 current_block = current_block.Parent;
6981 current_block = new Linq.QueryBlock (current_block, lexer.Location);
6983 expression_or_error opt_join_into
6985 current_block.AddStatement (new ContextualReturn ((Expression) $11));
6986 current_block.SetEndLocation (lexer.Location);
6988 var outer_selector = linq_clause_blocks.Pop ();
6989 var block = linq_clause_blocks.Pop ();
6991 var lt = (LocatedToken) $2;
6992 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
6993 Linq.RangeVariable into;
6997 $$ = new Linq.Join (block, sn, (Expression)$5, outer_selector, (Linq.QueryBlock) current_block, GetLocation ($1));
6998 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($6), GetLocation ($9));
7001 // Set equals right side parent to beginning of linq query, it is not accessible therefore cannot cause name collisions
7003 var parent = block.Parent;
7004 while (parent is Linq.QueryBlock) {
7005 parent = parent.Parent;
7007 current_block.Parent = parent;
7009 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
7011 lt = (LocatedToken) $12;
7012 into = new Linq.RangeVariable (lt.Value, lt.Location);
7014 $$ = new Linq.GroupJoin (block, sn, (Expression)$5, outer_selector, (Linq.QueryBlock) current_block, into, GetLocation ($1));
7015 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($6), GetLocation ($9), GetLocation ($12));
7018 current_block = block.Parent;
7019 ((Linq.QueryBlock)current_block).AddRangeVariable (into);
7021 | JOIN type identifier_inside_body IN
7023 if (linq_clause_blocks == null)
7024 linq_clause_blocks = new Stack<Linq.QueryBlock> ();
7026 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7027 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
7029 expression_or_error ON
7031 current_block.SetEndLocation (lexer.Location);
7032 current_block = current_block.Parent;
7034 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7035 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
7037 expression_or_error EQUALS
7039 current_block.AddStatement (new ContextualReturn ((Expression) $9));
7040 current_block.SetEndLocation (lexer.Location);
7041 current_block = current_block.Parent;
7043 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7045 expression_or_error opt_join_into
7047 current_block.AddStatement (new ContextualReturn ((Expression) $12));
7048 current_block.SetEndLocation (lexer.Location);
7050 var outer_selector = linq_clause_blocks.Pop ();
7051 var block = linq_clause_blocks.Pop ();
7053 var lt = (LocatedToken) $3;
7054 var sn = new Linq.RangeVariable (lt.Value, lt.Location);
7055 Linq.RangeVariable into;
7059 $$ = new Linq.Join (block, sn, (Expression)$6, outer_selector, (Linq.QueryBlock) current_block, GetLocation ($1)) {
7060 IdentifierType = (FullNamedExpression)$2
7062 lbag.AddLocation ($$, GetLocation ($3), GetLocation ($6), GetLocation ($9));
7065 // Set equals right side parent to beginning of linq query, it is not accessible therefore cannot cause name collisions
7067 var parent = block.Parent;
7068 while (parent is Linq.QueryBlock) {
7069 parent = parent.Parent;
7071 current_block.Parent = parent;
7073 ((Linq.QueryBlock)current_block).AddRangeVariable (sn);
7075 lt = (LocatedToken) $13;
7076 into = new Linq.RangeVariable (lt.Value, lt.Location); // TODO:
7078 $$ = new Linq.GroupJoin (block, sn, (Expression)$6, outer_selector, (Linq.QueryBlock) current_block, into, GetLocation ($1)) {
7079 IdentifierType = (FullNamedExpression)$2
7083 current_block = block.Parent;
7084 ((Linq.QueryBlock)current_block).AddRangeVariable (into);
7090 | INTO identifier_inside_body
7099 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7103 current_block.SetEndLocation (lexer.Location);
7104 current_block = current_block.Parent;
7114 current_block.SetEndLocation (lexer.Location);
7115 current_block = current_block.Parent;
7117 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7121 ((Linq.AQueryClause)$1).Next = (Linq.AQueryClause)$4;
7128 | orderings_then_by COMMA
7130 current_block.SetEndLocation (lexer.Location);
7131 current_block = current_block.Parent;
7133 current_block = new Linq.QueryBlock ((Linq.QueryBlock) current_block, lexer.Location);
7137 ((Linq.AQueryClause)$1).Tail.Next = (Linq.AQueryClause)$4;
7145 $$ = new Linq.OrderByAscending ((Linq.QueryBlock) current_block, (Expression)$1);
7147 | expression ASCENDING
7149 $$ = new Linq.OrderByAscending ((Linq.QueryBlock) current_block, (Expression)$1);
7150 lbag.AddLocation ($$, GetLocation ($2));
7152 | expression DESCENDING
7154 $$ = new Linq.OrderByDescending ((Linq.QueryBlock) current_block, (Expression)$1);
7155 lbag.AddLocation ($$, GetLocation ($2));
7162 $$ = new Linq.ThenByAscending ((Linq.QueryBlock) current_block, (Expression)$1);
7164 | expression ASCENDING
7166 $$ = new Linq.ThenByAscending ((Linq.QueryBlock) current_block, (Expression)$1);
7167 lbag.AddLocation ($$, GetLocation ($2));
7169 | expression DESCENDING
7171 $$ = new Linq.ThenByDescending ((Linq.QueryBlock) current_block, (Expression)$1);
7172 lbag.AddLocation ($$, GetLocation ($2));
7177 opt_query_continuation
7179 | INTO identifier_inside_body
7181 // query continuation block is not linked with query block but with block
7182 // before. This means each query can use same range variable names for
7183 // different identifiers.
7185 current_block.SetEndLocation (GetLocation ($1));
7186 current_block = current_block.Parent;
7188 current_block = new Linq.QueryBlock (current_block, lexer.Location);
7190 if (linq_clause_blocks == null)
7191 linq_clause_blocks = new Stack<Linq.QueryBlock> ();
7193 linq_clause_blocks.Push ((Linq.QueryBlock) current_block);
7197 var current_block = linq_clause_blocks.Pop ();
7198 var lt = (LocatedToken) $2;
7199 var rv = new Linq.RangeVariable (lt.Value, lt.Location);
7200 $$ = new Linq.QueryStartClause ((Linq.QueryBlock)current_block, null, rv, GetLocation ($1)) {
7201 next = (Linq.AQueryClause)$4
7207 // Support for using the compiler as an interactive parser
7209 // The INTERACTIVE_PARSER token is first sent to parse our
7210 // productions; If the result is a Statement, the parsing
7211 // is repeated, this time with INTERACTIVE_PARSE_WITH_BLOCK
7212 // to setup the blocks in advance.
7214 // This setup is here so that in the future we can add
7215 // support for other constructs (type parsing, namespaces, etc)
7216 // that do not require a block to be setup in advance
7220 : EVAL_STATEMENT_PARSER EOF
7221 | EVAL_USING_DECLARATIONS_UNIT_PARSER using_directives opt_COMPLETE_COMPLETION
7222 | EVAL_STATEMENT_PARSER
7224 current_container = current_type = new Class (current_container, new MemberName ("<InteractiveExpressionClass>"), Modifiers.PUBLIC, null);
7226 // (ref object retval)
7227 Parameter [] mpar = new Parameter [1];
7228 mpar [0] = new Parameter (new TypeExpression (compiler.BuiltinTypes.Object, Location.Null), "$retval", Parameter.Modifier.REF, null, Location.Null);
7230 ParametersCompiled pars = new ParametersCompiled (mpar);
7231 var mods = Modifiers.PUBLIC | Modifiers.STATIC;
7232 if (settings.Unsafe)
7233 mods |= Modifiers.UNSAFE;
7235 current_local_parameters = pars;
7236 var method = new InteractiveMethod (
7238 new TypeExpression (compiler.BuiltinTypes.Void, Location.Null),
7242 current_type.AddMember (method);
7243 oob_stack.Push (method);
7245 interactive_async = false;
7247 ++lexer.parsing_block;
7248 start_block (lexer.Location);
7250 interactive_statement_list opt_COMPLETE_COMPLETION
7252 --lexer.parsing_block;
7253 var method = (InteractiveMethod) oob_stack.Pop ();
7254 method.Block = (ToplevelBlock) end_block(lexer.Location);
7256 if (interactive_async == true) {
7257 method.ChangeToAsync ();
7260 InteractiveResult = (Class) pop_current_class ();
7261 current_local_parameters = null;
7263 | EVAL_COMPILATION_UNIT_PARSER interactive_compilation_unit
7266 interactive_compilation_unit
7267 : opt_extern_alias_directives opt_using_directives
7268 | opt_extern_alias_directives opt_using_directives namespace_or_type_declarations
7271 opt_COMPLETE_COMPLETION
7273 | COMPLETE_COMPLETION
7276 close_brace_or_complete_completion
7278 | COMPLETE_COMPLETION
7282 // XML documentation code references micro parser
7284 documentation_parsing
7287 module.DocumentationBuilder.ParsedName = (MemberName) $2;
7292 : doc_type_declaration_name opt_doc_method_sig
7294 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$2;
7296 | builtin_types opt_doc_method_sig
7298 module.DocumentationBuilder.ParsedBuiltinType = (TypeExpression)$1;
7299 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$2;
7302 | VOID opt_doc_method_sig
7304 module.DocumentationBuilder.ParsedBuiltinType = new TypeExpression (compiler.BuiltinTypes.Void, GetLocation ($1));
7305 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$2;
7308 | builtin_types DOT IDENTIFIER opt_doc_method_sig
7310 module.DocumentationBuilder.ParsedBuiltinType = (TypeExpression)$1;
7311 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$4;
7312 var lt = (LocatedToken) $3;
7313 $$ = new MemberName (lt.Value);
7315 | doc_type_declaration_name DOT THIS
7317 $$ = new MemberName ((MemberName) $1, MemberCache.IndexerNameAlias, Location.Null);
7319 | doc_type_declaration_name DOT THIS OPEN_BRACKET
7321 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
7323 opt_doc_parameters CLOSE_BRACKET
7325 module.DocumentationBuilder.ParsedParameters = (List<DocumentationParameter>)$6;
7326 $$ = new MemberName ((MemberName) $1, MemberCache.IndexerNameAlias, Location.Null);
7328 | EXPLICIT OPERATOR type opt_doc_method_sig
7330 var p = (List<DocumentationParameter>)$4 ?? new List<DocumentationParameter> (1);
7331 p.Add (new DocumentationParameter ((FullNamedExpression) $3));
7332 module.DocumentationBuilder.ParsedParameters = p;
7333 module.DocumentationBuilder.ParsedOperator = Operator.OpType.Explicit;
7336 | IMPLICIT OPERATOR type opt_doc_method_sig
7338 var p = (List<DocumentationParameter>)$4 ?? new List<DocumentationParameter> (1);
7339 p.Add (new DocumentationParameter ((FullNamedExpression) $3));
7340 module.DocumentationBuilder.ParsedParameters = p;
7341 module.DocumentationBuilder.ParsedOperator = Operator.OpType.Implicit;
7344 | OPERATOR overloadable_operator opt_doc_method_sig
7346 var p = (List<DocumentationParameter>)$3;
7347 module.DocumentationBuilder.ParsedParameters = p;
7348 module.DocumentationBuilder.ParsedOperator = (Operator.OpType) $2;
7353 doc_type_declaration_name
7354 : type_declaration_name
7355 | doc_type_declaration_name DOT type_declaration_name
7357 $$ = new MemberName (((MemberName) $1), (MemberName) $3);
7365 valid_param_mod = ParameterModifierType.Ref | ParameterModifierType.Out;
7367 opt_doc_parameters CLOSE_PARENS
7376 $$ = new List<DocumentationParameter> (0);
7384 var parameters = new List<DocumentationParameter> ();
7385 parameters.Add ((DocumentationParameter) $1);
7388 | doc_parameters COMMA doc_parameter
7390 var parameters = $1 as List<DocumentationParameter>;
7391 parameters.Add ((DocumentationParameter) $3);
7397 : opt_parameter_modifier parameter_type
7400 $$ = new DocumentationParameter ((Parameter.Modifier) $1, (FullNamedExpression) $2);
7402 $$ = new DocumentationParameter ((FullNamedExpression) $2);
7409 // A class used to hold info about an operator declarator
7411 class OperatorDeclaration {
7412 public readonly Operator.OpType optype;
7413 public readonly FullNamedExpression ret_type;
7414 public readonly Location location;
7416 public OperatorDeclaration (Operator.OpType op, FullNamedExpression ret_type, Location location)
7419 this.ret_type = ret_type;
7420 this.location = location;
7424 void Error_ExpectingTypeName (Expression expr)
7426 if (expr is Invocation){
7427 report.Error (1002, expr.Location, "Expecting `;'");
7429 expr.Error_InvalidExpressionStatement (report);
7433 void Error_ParameterModifierNotValid (string modifier, Location loc)
7435 report.Error (631, loc, "The parameter modifier `{0}' is not valid in this context",
7439 void Error_DuplicateParameterModifier (Location loc, Parameter.Modifier mod)
7441 report.Error (1107, loc, "Duplicate parameter modifier `{0}'",
7442 Parameter.GetModifierSignature (mod));
7445 void Error_TypeExpected (Location loc)
7447 report.Error (1031, loc, "Type expected");
7450 void Error_UnsafeCodeNotAllowed (Location loc)
7452 report.Error (227, loc, "Unsafe code requires the `unsafe' command line option to be specified");
7455 void Warning_EmptyStatement (Location loc)
7457 report.Warning (642, 3, loc, "Possible mistaken empty statement");
7460 void Error_NamedArgumentExpected (NamedArgument a)
7462 report.Error (1738, a.Location, "Named arguments must appear after the positional arguments");
7465 void Error_MissingInitializer (Location loc)
7467 report.Error (210, loc, "You must provide an initializer in a fixed or using statement declaration");
7470 object Error_AwaitAsIdentifier (object token)
7473 report.Error (4003, GetLocation (token), "`await' cannot be used as an identifier within an async method or lambda expression");
7474 return new LocatedToken ("await", GetLocation (token));
7480 void push_current_container (TypeDefinition tc, object partial_token)
7482 if (module.Evaluator != null){
7483 tc.Definition.Modifiers = tc.ModFlags = (tc.ModFlags & ~Modifiers.AccessibilityMask) | Modifiers.PUBLIC;
7487 undo.AddTypeContainer (current_container, tc);
7490 if (partial_token != null)
7491 current_container.AddPartial (tc);
7493 current_container.AddTypeContainer (tc);
7495 ++lexer.parsing_declaration;
7496 current_container = tc;
7500 TypeContainer pop_current_class ()
7502 var retval = current_container;
7504 current_container = current_container.Parent;
7505 current_type = current_type.Parent as TypeDefinition;
7510 [System.Diagnostics.Conditional ("FULL_AST")]
7511 void StoreModifierLocation (object token, Location loc)
7516 if (mod_locations == null)
7517 mod_locations = new List<Tuple<Modifiers, Location>> ();
7519 mod_locations.Add (Tuple.Create ((Modifiers) token, loc));
7522 [System.Diagnostics.Conditional ("FULL_AST")]
7523 void PushLocation (Location loc)
7525 if (location_stack == null)
7526 location_stack = new Stack<Location> ();
7528 location_stack.Push (loc);
7531 Location PopLocation ()
7533 if (location_stack == null)
7534 return Location.Null;
7536 return location_stack.Pop ();
7539 string CheckAttributeTarget (int token, string a, Location l)
7542 case "assembly" : case "module" : case "field" : case "method" : case "param" : case "property" : case "type" :
7546 if (!Tokenizer.IsValidIdentifier (a)) {
7547 Error_SyntaxError (token);
7549 report.Warning (658, 1, l,
7550 "`{0}' is invalid attribute target. All attributes in this attribute section will be ignored", a);
7553 return string.Empty;
7556 static bool IsUnaryOperator (Operator.OpType op)
7560 case Operator.OpType.LogicalNot:
7561 case Operator.OpType.OnesComplement:
7562 case Operator.OpType.Increment:
7563 case Operator.OpType.Decrement:
7564 case Operator.OpType.True:
7565 case Operator.OpType.False:
7566 case Operator.OpType.UnaryPlus:
7567 case Operator.OpType.UnaryNegation:
7573 void syntax_error (Location l, string msg)
7575 report.Error (1003, l, "Syntax error, " + msg);
7580 public Tokenizer Lexer {
7586 public CSharpParser (SeekableStreamReader reader, CompilationSourceFile file, ParserSession session)
7587 : this (reader, file, file.Compiler.Report, session)
7591 public CSharpParser (SeekableStreamReader reader, CompilationSourceFile file, Report report, ParserSession session)
7594 current_container = current_namespace = file;
7596 this.module = file.Module;
7597 this.compiler = file.Compiler;
7598 this.settings = compiler.Settings;
7599 this.report = report;
7601 lang_version = settings.Version;
7602 yacc_verbose_flag = settings.VerboseParserFlag;
7603 doc_support = settings.DocumentationFile != null;
7604 lexer = new Tokenizer (reader, file, session, report);
7605 oob_stack = new Stack<object> ();
7606 lbag = session.LocationsBag;
7607 use_global_stacks = session.UseJayGlobalArrays;
7608 parameters_bucket = session.ParametersStack;
7611 public void parse ()
7613 eof_token = Token.EOF;
7616 if (yacc_verbose_flag > 1)
7617 yyparse (lexer, new yydebug.yyDebugSimple ());
7621 Tokenizer tokenizer = lexer as Tokenizer;
7622 tokenizer.cleanup ();
7623 } catch (Exception e){
7624 if (e is yyParser.yyUnexpectedEof) {
7625 Error_SyntaxError (yyToken);
7626 UnexpectedEOF = true;
7630 if (e is yyParser.yyException) {
7631 if (report.Errors == 0)
7632 report.Error (-25, lexer.Location, "Parsing error");
7634 // Used by compiler-tester to test internal errors
7635 if (yacc_verbose_flag > 0 || e is FatalException)
7638 report.Error (589, lexer.Location, "Internal compiler error during parsing" + e);
7643 void CheckToken (int error, int yyToken, string msg, Location loc)
7645 if (yyToken >= Token.FIRST_KEYWORD && yyToken <= Token.LAST_KEYWORD)
7646 report.Error (error, loc, "{0}: `{1}' is a keyword", msg, GetTokenName (yyToken));
7648 report.Error (error, loc, msg);
7651 string ConsumeStoredComment ()
7653 string s = tmpComment;
7655 Lexer.doc_state = XmlCommentState.Allowed;
7659 void FeatureIsNotAvailable (Location loc, string feature)
7661 report.FeatureIsNotAvailable (compiler, loc, feature);
7664 Location GetLocation (object obj)
7666 var lt = obj as LocatedToken;
7670 var mn = obj as MemberName;
7674 var expr = obj as Expression;
7676 return expr.Location;
7678 return lexer.Location;
7681 void start_block (Location loc)
7683 if (current_block == null) {
7684 current_block = new ToplevelBlock (compiler, current_local_parameters, loc);
7685 parsing_anonymous_method = false;
7686 } else if (parsing_anonymous_method) {
7687 current_block = new ParametersBlock (current_block, current_local_parameters, loc);
7688 parsing_anonymous_method = false;
7690 current_block = new ExplicitBlock (current_block, loc, Location.Null);
7695 end_block (Location loc)
7697 Block retval = current_block.Explicit;
7698 retval.SetEndLocation (loc);
7699 current_block = retval.Parent;
7703 void start_anonymous (bool isLambda, ParametersCompiled parameters, bool isAsync, Location loc)
7705 oob_stack.Push (current_anonymous_method);
7706 oob_stack.Push (current_local_parameters);
7707 oob_stack.Push (current_variable);
7708 oob_stack.Push (async_block);
7710 current_local_parameters = parameters;
7712 if (lang_version <= LanguageVersion.ISO_2)
7713 FeatureIsNotAvailable (loc, "lambda expressions");
7715 current_anonymous_method = new LambdaExpression (loc);
7717 if (lang_version == LanguageVersion.ISO_1)
7718 FeatureIsNotAvailable (loc, "anonymous methods");
7720 current_anonymous_method = new AnonymousMethodExpression (loc);
7723 async_block = isAsync;
7724 // Force the next block to be created as a ToplevelBlock
7725 parsing_anonymous_method = true;
7729 * Completes the anonymous method processing, if lambda_expr is null, this
7730 * means that we have a Statement instead of an Expression embedded
7732 AnonymousMethodExpression end_anonymous (ParametersBlock anon_block)
7734 AnonymousMethodExpression retval;
7737 anon_block.IsAsync = true;
7739 current_anonymous_method.Block = anon_block;
7740 retval = current_anonymous_method;
7742 async_block = (bool) oob_stack.Pop ();
7743 current_variable = (BlockVariable) oob_stack.Pop ();
7744 current_local_parameters = (ParametersCompiled) oob_stack.Pop ();
7745 current_anonymous_method = (AnonymousMethodExpression) oob_stack.Pop ();
7750 void Error_SyntaxError (int token)
7752 Error_SyntaxError (0, token);
7755 void Error_SyntaxError (int error_code, int token)
7757 Error_SyntaxError (error_code, token, "Unexpected symbol");
7760 void Error_SyntaxError (int error_code, int token, string msg)
7762 Lexer.CompleteOnEOF = false;
7764 // An error message has been reported by tokenizer
7765 if (token == Token.ERROR)
7768 // Avoid duplicit error message after unterminated string literals
7769 if (token == Token.LITERAL && lexer.Location.Column == 0)
7772 string symbol = GetSymbolName (token);
7773 string expecting = GetExpecting ();
7774 var loc = lexer.Location - symbol.Length;
7776 if (error_code == 0) {
7777 if (expecting == "`identifier'") {
7778 if (token > Token.FIRST_KEYWORD && token < Token.LAST_KEYWORD) {
7779 report.Error (1041, loc, "Identifier expected, `{0}' is a keyword", symbol);
7784 expecting = "identifier";
7785 } else if (expecting == "`)'") {
7792 if (string.IsNullOrEmpty (expecting))
7793 report.Error (error_code, loc, "{1} `{0}'", symbol, msg);
7795 report.Error (error_code, loc, "{2} `{0}', expecting {1}", symbol, expecting, msg);
7798 string GetExpecting ()
7800 int [] tokens = yyExpectingTokens (yyExpectingState);
7801 var names = new List<string> (tokens.Length);
7802 bool has_type = false;
7803 bool has_identifier = false;
7804 for (int i = 0; i < tokens.Length; i++){
7805 int token = tokens [i];
7806 has_identifier |= token == Token.IDENTIFIER;
7808 string name = GetTokenName (token);
7809 if (name == "<internal>")
7812 has_type |= name == "type";
7813 if (names.Contains (name))
7820 // Too many tokens to enumerate
7822 if (names.Count > 8)
7825 if (has_type && has_identifier)
7826 names.Remove ("identifier");
7828 if (names.Count == 1)
7829 return "`" + GetTokenName (tokens [0]) + "'";
7831 StringBuilder sb = new StringBuilder ();
7833 int count = names.Count;
7834 for (int i = 0; i < count; i++){
7835 bool last = i + 1 == count;
7839 sb.Append (names [i]);
7840 sb.Append (last ? "'" : count < 3 ? "' " : "', ");
7842 return sb.ToString ();
7846 string GetSymbolName (int token)
7850 return ((Constant)lexer.Value).GetValue ().ToString ();
7851 case Token.IDENTIFIER:
7852 return ((LocatedToken)lexer.Value).Value;
7894 case Token.BITWISE_AND:
7896 case Token.BITWISE_OR:
7910 case Token.OP_SHIFT_LEFT:
7912 case Token.OP_SHIFT_RIGHT:
7932 case Token.OP_COALESCING:
7934 case Token.OP_MULT_ASSIGN:
7936 case Token.OP_DIV_ASSIGN:
7938 case Token.OP_MOD_ASSIGN:
7940 case Token.OP_ADD_ASSIGN:
7942 case Token.OP_SUB_ASSIGN:
7944 case Token.OP_SHIFT_LEFT_ASSIGN:
7946 case Token.OP_SHIFT_RIGHT_ASSIGN:
7948 case Token.OP_AND_ASSIGN:
7950 case Token.OP_XOR_ASSIGN:
7952 case Token.OP_OR_ASSIGN:
7956 return GetTokenName (token);
7959 static string GetTokenName (int token)
7962 case Token.ABSTRACT:
7984 case Token.CONTINUE:
7988 case Token.DELEGATE:
7998 case Token.EXPLICIT:
8001 case Token.EXTERN_ALIAS:
8017 case Token.IMPLICIT:
8021 case Token.INTERFACE:
8023 case Token.INTERNAL:
8029 case Token.NAMESPACE:
8035 case Token.OPERATOR:
8039 case Token.OVERRIDE:
8045 case Token.PROTECTED:
8049 case Token.READONLY:
8061 case Token.STACKALLOC:
8062 return "stackalloc";
8079 case Token.UNCHECKED:
8087 case Token.VOLATILE:
8095 case Token.REFVALUE:
8096 return "__refvalue";
8106 case Token.FROM_FIRST:
8124 case Token.ASCENDING:
8126 case Token.DESCENDING:
8127 return "descending";
8134 case Token.OPEN_BRACE:
8136 case Token.CLOSE_BRACE:
8138 case Token.OPEN_BRACKET:
8139 case Token.OPEN_BRACKET_EXPR:
8141 case Token.CLOSE_BRACKET:
8143 case Token.OPEN_PARENS_CAST:
8144 case Token.OPEN_PARENS_LAMBDA:
8145 case Token.OPEN_PARENS:
8147 case Token.CLOSE_PARENS:
8153 case Token.DEFAULT_COLON:
8157 case Token.SEMICOLON:
8163 case Token.INTERPOLATED_STRING_END:
8165 case Token.INTERPOLATED_STRING:
8174 case Token.BITWISE_AND:
8175 case Token.BITWISE_OR:
8182 case Token.OP_SHIFT_LEFT:
8183 case Token.OP_SHIFT_RIGHT:
8191 case Token.OP_COALESCING:
8192 case Token.OP_MULT_ASSIGN:
8193 case Token.OP_DIV_ASSIGN:
8194 case Token.OP_MOD_ASSIGN:
8195 case Token.OP_ADD_ASSIGN:
8196 case Token.OP_SUB_ASSIGN:
8197 case Token.OP_SHIFT_LEFT_ASSIGN:
8198 case Token.OP_SHIFT_RIGHT_ASSIGN:
8199 case Token.OP_AND_ASSIGN:
8200 case Token.OP_XOR_ASSIGN:
8201 case Token.OP_OR_ASSIGN:
8202 case Token.INTERR_OPERATOR:
8203 return "<operator>";
8225 case Token.OP_GENERICS_LT:
8226 case Token.GENERIC_DIMENSION:
8228 case Token.OP_GENERICS_GT:
8231 case Token.INTERR_NULLABLE:
8233 case Token.DOUBLE_COLON:
8237 case Token.IDENTIFIER:
8239 return "identifier";
8242 return "end-of-file";
8244 // All of these are internal.
8247 case Token.FIRST_KEYWORD:
8248 case Token.EVAL_COMPILATION_UNIT_PARSER:
8249 case Token.EVAL_USING_DECLARATIONS_UNIT_PARSER:
8250 case Token.EVAL_STATEMENT_PARSER:
8251 case Token.LAST_KEYWORD:
8252 case Token.GENERATE_COMPLETION:
8253 case Token.COMPLETE_COMPLETION:
8254 return "<internal>";
8256 // A bit more robust.
8258 return yyNames [token];