3 // cs-parser.jay: The Parser for the C# compiler
5 // Authors: Miguel de Icaza (miguel@gnu.org)
6 // Ravi Pratap (ravi@ximian.com)
7 // Marek Safar (marek.safar@gmail.com)
9 // Licensed under the terms of the GNU GPL
11 // (C) 2001 Ximian, Inc (http://www.ximian.com)
12 // (C) 2004 Novell, Inc
15 // (1) Figure out why error productions dont work. `type-declaration' is a
16 // great spot to put an `error' because you can reproduce it with this input:
19 // Possible optimization:
20 // Run memory profiler with parsing only, and consider dropping
21 // arraylists where not needed. Some pieces can use linked lists.
29 using System.Collections;
34 public class CSharpParser {
35 NamespaceEntry current_namespace;
36 TypeContainer current_container;
37 DeclSpace current_class;
39 IAnonymousHost anonymous_host;
42 /// Current block is used to add statements as we find
47 Delegate current_delegate;
49 GenericMethod current_generic_method;
50 AnonymousMethodExpression current_anonymous_method;
53 /// This is used by the unary_expression code to resolve
54 /// a name against a parameter.
57 // FIXME: This is very ugly and it's very hard to reset it correctly
58 // on all places, especially when some parameters are autogenerated.
59 Parameters current_local_parameters;
62 /// Using during property parsing to describe the implicit
63 /// value parameter that is passed to the "set" and "get"accesor
64 /// methods (properties and indexers).
66 FullNamedExpression implicit_value_parameter_type;
67 Parameters indexer_parameters;
70 /// Hack to help create non-typed array initializer
72 public static FullNamedExpression current_array_type;
73 FullNamedExpression pushed_current_array_type;
76 /// Used to determine if we are parsing the get/set pair
77 /// of an indexer or a property
81 bool parsing_anonymous_method;
84 /// An out-of-band stack.
86 static Stack oob_stack;
93 static public int yacc_verbose_flag;
101 /// Temporary Xml documentation cache.
102 /// For enum types, we need one more temporary store.
105 string enumTypeComment;
107 /// Current attribute target
108 string current_attr_target;
110 /// assembly and module attribute definitions are enabled
111 bool global_attrs_enabled = true;
112 bool has_get, has_set;
113 bool parameter_modifiers_not_allowed;
114 bool params_modifiers_not_allowed;
115 bool arglist_allowed;
120 %token NONE /* This token is never returned by our lexer */
121 %token ERROR // This is used not by the parser, but by the tokenizer.
125 *These are the C# keywords
212 %token QUERY_FIRST_TOKEN
225 %token QUERY_LAST_TOKEN
227 /* C# keywords which are not really keywords */
233 /* C# single character operators/punctuation. */
234 %token OPEN_BRACE "{"
235 %token CLOSE_BRACE "}"
236 %token OPEN_BRACKET "["
237 %token CLOSE_BRACKET "]"
238 %token OPEN_PARENS "("
239 %token CLOSE_PARENS ")"
251 %token OP_GENERICS_LT "<"
253 %token OP_GENERICS_GT ">"
254 %token BITWISE_AND "&"
255 %token BITWISE_OR "|"
262 /* C# multi-character operators. */
263 %token DOUBLE_COLON "::"
266 %token OP_SHIFT_LEFT "<<"
267 %token OP_SHIFT_RIGHT ">>"
274 %token OP_MULT_ASSIGN "*="
275 %token OP_DIV_ASSIGN "/="
276 %token OP_MOD_ASSIGN "%="
277 %token OP_ADD_ASSIGN "+="
278 %token OP_SUB_ASSIGN "-="
279 %token OP_SHIFT_LEFT_ASSIGN "<<="
280 %token OP_SHIFT_RIGHT_ASSIGN ">>="
281 %token OP_AND_ASSIGN "&="
282 %token OP_XOR_ASSIGN "^="
283 %token OP_OR_ASSIGN "|="
285 %token OP_COALESCING "??"
288 %token LITERAL_INTEGER "int literal"
289 %token LITERAL_FLOAT "float literal"
290 %token LITERAL_DOUBLE "double literal"
291 %token LITERAL_DECIMAL "decimal literal"
292 %token LITERAL_CHARACTER "character literal"
293 %token LITERAL_STRING "string literal"
296 %token OPEN_PARENS_LAMBDA
297 %token CLOSE_PARENS_CAST
298 %token CLOSE_PARENS_NO_CAST
299 %token CLOSE_PARENS_OPEN_PARENS
300 %token CLOSE_PARENS_MINUS
301 %token DEFAULT_OPEN_PARENS
302 %token GENERIC_DIMENSION
305 /* Add precedence rules to solve dangling else s/r conflict */
314 %left OP_SHIFT_LEFT OP_SHIFT_RIGHT
316 %left STAR DIV PERCENT
317 %right BANG CARRET UMINUS
318 %nonassoc OP_INC OP_DEC
320 %left OPEN_BRACKET OPEN_BRACE
324 %start compilation_unit
328 : outer_declarations opt_EOF
329 | outer_declarations global_attributes opt_EOF
330 | global_attributes opt_EOF
331 | opt_EOF /* allow empty files */
337 Lexer.check_incorrect_doc_comment ();
341 Lexer.check_incorrect_doc_comment ();
347 | outer_declarations outer_declaration
351 : extern_alias_directive
353 | namespace_member_declaration
356 extern_alias_directives
357 : extern_alias_directive
358 | extern_alias_directives extern_alias_directive;
360 extern_alias_directive
361 : EXTERN IDENTIFIER IDENTIFIER SEMICOLON
363 LocatedToken lt = (LocatedToken) $2;
366 Report.Error (1003, lt.Location, "'alias' expected");
367 } else if (RootContext.Version == LanguageVersion.ISO_1) {
368 Report.FeatureIsNotAvailable (lt.Location, "external alias");
370 lt = (LocatedToken) $3;
371 current_namespace.AddUsingExternalAlias (lt.Value, lt.Location);
378 | using_directives using_directive
382 : using_alias_directive
384 if (RootContext.Documentation != null)
385 Lexer.doc_state = XmlCommentState.Allowed;
387 | using_namespace_directive
389 if (RootContext.Documentation != null)
390 Lexer.doc_state = XmlCommentState.Allowed;
394 using_alias_directive
395 : USING IDENTIFIER ASSIGN
396 namespace_or_type_name SEMICOLON
398 LocatedToken lt = (LocatedToken) $2;
399 current_namespace.AddUsingAlias (lt.Value, (MemberName) $4, (Location) $1);
402 CheckIdentifierToken (yyToken, GetLocation ($2));
406 using_namespace_directive
407 : USING namespace_name SEMICOLON
409 current_namespace.AddUsing ((MemberName) $2, (Location) $1);
414 // Strictly speaking, namespaces don't have attributes but
415 // we parse global attributes along with namespace declarations and then
418 namespace_declaration
419 : opt_attributes NAMESPACE namespace_or_type_name
421 MemberName name = (MemberName) $3;
424 Report.Error(1671, name.Location, "A namespace declaration cannot have modifiers or attributes");
427 if (name.TypeArguments != null)
428 syntax_error (lexer.Location, "namespace name expected");
430 current_namespace = new NamespaceEntry (
431 current_namespace, file, name.GetName ());
432 current_class = current_namespace.SlaveDeclSpace;
433 current_container = current_class.PartialContainer;
435 namespace_body opt_semicolon
437 current_namespace = current_namespace.Parent;
438 current_class = current_namespace.SlaveDeclSpace;
439 current_container = current_class.PartialContainer;
454 : namespace_or_type_name {
455 MemberName name = (MemberName) $1;
457 if (name.TypeArguments != null)
458 syntax_error (lexer.Location, "namespace name expected");
467 if (RootContext.Documentation != null)
468 Lexer.doc_state = XmlCommentState.Allowed;
474 : opt_extern_alias_directives
476 opt_namespace_member_declarations
480 Report.Error (1518, lexer.Location, "Expected `class', `delegate', `enum', `interface', or `struct'");
483 | opt_extern_alias_directives
485 opt_namespace_member_declarations
488 Report.Error (1513, lexer.Location, "} expected");
497 opt_extern_alias_directives
499 | extern_alias_directives
502 opt_namespace_member_declarations
504 | namespace_member_declarations
507 namespace_member_declarations
508 : namespace_member_declaration
509 | namespace_member_declarations namespace_member_declaration
512 namespace_member_declaration
516 DeclSpace ds = (DeclSpace)$1;
518 if ((ds.ModFlags & (Modifiers.PRIVATE|Modifiers.PROTECTED)) != 0){
519 Report.Error (1527, ds.Location,
520 "Namespace elements cannot be explicitly declared as private, protected or protected internal");
523 current_namespace.DeclarationFound = true;
525 | namespace_declaration {
526 current_namespace.DeclarationFound = true;
529 | field_declaration {
530 Report.Error (116, ((MemberCore) $1).Location, "A namespace can only contain types and namespace declarations");
532 | method_declaration {
533 Report.Error (116, ((MemberCore) $1).Location, "A namespace can only contain types and namespace declarations");
540 | interface_declaration
542 | delegate_declaration
544 // Enable this when we have handled all errors, because this acts as a generic fallback
547 // Console.WriteLine ("Token=" + yyToken);
548 // Report.Error (1518, GetLocation ($1), "Expected class, struct, interface, enum or delegate");
560 Attributes attrs = (Attributes)$1;
561 if (global_attrs_enabled) {
562 CodeGen.Assembly.AddAttributes (attrs.Attrs);
564 foreach (Attribute a in attrs.Attrs) {
565 Report.Error (1730, a.Location, "Assembly and module attributes must precede all other elements except using clauses and extern alias declarations");
576 global_attrs_enabled = false;
581 global_attrs_enabled = false;
590 if (current_attr_target != String.Empty) {
591 ArrayList sect = (ArrayList) $1;
593 if (global_attrs_enabled) {
594 if (current_attr_target == "module") {
595 CodeGen.Module.AddAttributes (sect);
597 } else if (current_attr_target != null && current_attr_target.Length > 0) {
598 CodeGen.Assembly.AddAttributes (sect);
601 $$ = new Attributes (sect);
604 if (RootContext.Documentation != null) {
605 Lexer.check_incorrect_doc_comment ();
607 XmlCommentState.Allowed;
611 $$ = new Attributes (sect);
616 current_attr_target = null;
618 | attribute_sections attribute_section
620 if (current_attr_target != String.Empty) {
621 Attributes attrs = $1 as Attributes;
622 ArrayList sect = (ArrayList) $2;
624 if (global_attrs_enabled) {
625 if (current_attr_target == "module") {
626 CodeGen.Module.AddAttributes (sect);
628 } else if (current_attr_target == "assembly") {
629 CodeGen.Assembly.AddAttributes (sect);
633 attrs = new Attributes (sect);
635 attrs.AddAttributes (sect);
639 attrs = new Attributes (sect);
641 attrs.AddAttributes (sect);
647 current_attr_target = null;
652 : OPEN_BRACKET attribute_target_specifier attribute_list opt_comma CLOSE_BRACKET
656 | OPEN_BRACKET attribute_list opt_comma CLOSE_BRACKET
662 attribute_target_specifier
663 : attribute_target COLON
665 current_attr_target = (string)$1;
673 LocatedToken lt = (LocatedToken) $1;
674 $$ = CheckAttributeTarget (lt.Value, lt.Location);
676 | EVENT { $$ = "event"; }
677 | RETURN { $$ = "return"; }
680 string name = yyNames [yyToken].ToLower ();
681 $$ = CheckAttributeTarget (name, GetLocation ($1));
688 ArrayList attrs = new ArrayList (4);
694 | attribute_list COMMA attribute
696 ArrayList attrs = (ArrayList) $1;
704 : attribute_name opt_attribute_arguments
706 MemberName mname = (MemberName) $1;
707 if (mname.IsGeneric) {
708 Report.Error (404, lexer.Location,
709 "'<' unexpected: attributes cannot be generic");
712 object [] arguments = (object []) $2;
713 MemberName left = mname.Left;
714 string identifier = mname.Name;
716 Expression left_expr = left == null ? null : left.GetTypeExpression ();
718 if (current_attr_target == String.Empty)
720 else if (global_attrs_enabled && (current_attr_target == "assembly" || current_attr_target == "module"))
721 // FIXME: supply "nameEscaped" parameter here.
722 $$ = new GlobalAttribute (current_namespace, current_attr_target,
723 left_expr, identifier, arguments, mname.Location, lexer.IsEscapedIdentifier (mname.Location));
725 $$ = new Attribute (current_attr_target, left_expr, identifier, arguments, mname.Location, lexer.IsEscapedIdentifier (mname.Location));
730 : namespace_or_type_name { /* reserved attribute name or identifier: 17.4 */ }
733 opt_attribute_arguments
734 : /* empty */ { $$ = null; }
735 | OPEN_PARENS attribute_arguments CLOSE_PARENS
743 : opt_positional_argument_list
748 $$ = new object [] { $1, null };
751 | positional_argument_list COMMA named_argument_list
753 $$ = new object[] { $1, $3 };
755 | named_argument_list
757 $$ = new object [] { null, $1 };
762 opt_positional_argument_list
763 : /* empty */ { $$ = null; }
764 | positional_argument_list
767 positional_argument_list
770 ArrayList args = new ArrayList (4);
771 args.Add (new Argument ((Expression) $1, Argument.AType.Expression));
775 | positional_argument_list COMMA expression
777 ArrayList args = (ArrayList) $1;
778 args.Add (new Argument ((Expression) $3, Argument.AType.Expression));
787 ArrayList args = new ArrayList (4);
792 | named_argument_list COMMA named_argument
794 ArrayList args = (ArrayList) $1;
799 | named_argument_list COMMA expression
801 Report.Error (1016, ((Expression) $3).Location, "Named attribute argument expected");
807 : IDENTIFIER ASSIGN expression
809 // FIXME: keep location
810 $$ = new DictionaryEntry (
811 ((LocatedToken) $1).Value,
812 new Argument ((Expression) $3, Argument.AType.Expression));
818 : OPEN_BRACE opt_class_member_declarations CLOSE_BRACE
821 opt_class_member_declarations
823 | class_member_declarations
826 class_member_declarations
827 : class_member_declaration
828 | class_member_declarations
829 class_member_declaration
832 class_member_declaration
833 : constant_declaration // done
834 | field_declaration // done
835 | method_declaration // done
836 | property_declaration // done
837 | event_declaration // done
838 | indexer_declaration // done
839 | operator_declaration // done
840 | constructor_declaration // done
841 | destructor_declaration // done
851 lexer.ConstraintsParsing = true;
855 MemberName name = MakeName ((MemberName) $6);
856 push_current_class (new Struct (current_namespace, current_class, name, (int) $2, (Attributes) $1), $3);
859 opt_type_parameter_constraints_clauses
861 lexer.ConstraintsParsing = false;
863 current_class.SetParameterInfo ((ArrayList) $9);
865 if (RootContext.Documentation != null)
866 current_container.DocComment = Lexer.consume_doc_comment ();
870 if (RootContext.Documentation != null)
871 Lexer.doc_state = XmlCommentState.Allowed;
875 $$ = pop_current_class ();
877 | opt_attributes opt_modifiers opt_partial STRUCT error {
878 CheckIdentifierToken (yyToken, GetLocation ($5));
885 if (RootContext.Documentation != null)
886 Lexer.doc_state = XmlCommentState.Allowed;
888 opt_struct_member_declarations CLOSE_BRACE
891 opt_struct_member_declarations
893 | struct_member_declarations
896 struct_member_declarations
897 : struct_member_declaration
898 | struct_member_declarations struct_member_declaration
901 struct_member_declaration
902 : constant_declaration
905 | property_declaration
907 | indexer_declaration
908 | operator_declaration
909 | constructor_declaration
913 * This is only included so we can flag error 575:
914 * destructors only allowed on class types
916 | destructor_declaration
927 int modflags = (int) $2;
928 foreach (VariableDeclaration constant in (ArrayList) $5){
929 Location l = constant.Location;
930 if ((modflags & Modifiers.STATIC) != 0) {
931 Report.Error (504, l, "The constant `{0}' cannot be marked static", current_container.GetSignatureForError () + '.' + (string) constant.identifier);
935 Const c = new Const (
936 current_class, (FullNamedExpression) $4, (string) constant.identifier,
937 (Expression) constant.expression_or_array_initializer, modflags,
940 if (RootContext.Documentation != null) {
941 c.DocComment = Lexer.consume_doc_comment ();
942 Lexer.doc_state = XmlCommentState.Allowed;
944 current_container.AddConstant (c);
950 : constant_declarator
952 ArrayList constants = new ArrayList (4);
957 | constant_declarators COMMA constant_declarator
960 ArrayList constants = (ArrayList) $1;
967 : IDENTIFIER ASSIGN constant_expression
969 $$ = new VariableDeclaration ((LocatedToken) $1, $3);
973 // A const field requires a value to be provided
974 Report.Error (145, ((LocatedToken) $1).Location, "A const field requires a value to be provided");
986 FullNamedExpression type = (FullNamedExpression) $3;
989 current_array_type = null;
991 foreach (VariableDeclaration var in (ArrayList) $4){
992 Field field = new Field (current_class, type, mod, var.identifier,
993 (Attributes) $1, var.Location);
995 field.Initializer = var.expression_or_array_initializer;
997 if (RootContext.Documentation != null) {
998 field.DocComment = Lexer.consume_doc_comment ();
999 Lexer.doc_state = XmlCommentState.Allowed;
1001 current_container.AddField (field);
1002 $$ = field; // FIXME: might be better if it points to the top item
1009 fixed_variable_declarators
1012 FullNamedExpression type = (FullNamedExpression) $4;
1015 current_array_type = null;
1017 foreach (VariableDeclaration var in (ArrayList) $5) {
1018 FixedField field = new FixedField (current_class, type, mod, var.identifier,
1019 (Expression)var.expression_or_array_initializer, (Attributes) $1, var.Location);
1021 if (RootContext.Documentation != null) {
1022 field.DocComment = Lexer.consume_doc_comment ();
1023 Lexer.doc_state = XmlCommentState.Allowed;
1025 current_container.AddField (field);
1026 $$ = field; // FIXME: might be better if it points to the top item
1035 Report.Error (1641, GetLocation ($4), "A fixed size buffer field must have the array size specifier after the field name");
1040 variable_declarators
1042 current_array_type = null;
1043 Report.Error (670, (Location) $3, "Fields cannot have void type");
1047 fixed_variable_declarators
1048 : fixed_variable_declarator
1050 ArrayList decl = new ArrayList (2);
1054 | fixed_variable_declarators COMMA fixed_variable_declarator
1056 ArrayList decls = (ArrayList) $1;
1062 fixed_variable_declarator
1063 : IDENTIFIER OPEN_BRACKET expression CLOSE_BRACKET
1065 $$ = new VariableDeclaration ((LocatedToken) $1, $3);
1067 | IDENTIFIER OPEN_BRACKET CLOSE_BRACKET
1069 Report.Error (443, lexer.Location, "Value or constant expected");
1070 $$ = new VariableDeclaration ((LocatedToken) $1, null);
1074 variable_declarators
1075 : variable_declarator
1077 ArrayList decl = new ArrayList (4);
1082 | variable_declarators COMMA variable_declarator
1084 ArrayList decls = (ArrayList) $1;
1091 : IDENTIFIER ASSIGN variable_initializer
1093 $$ = new VariableDeclaration ((LocatedToken) $1, $3);
1097 $$ = new VariableDeclaration ((LocatedToken) $1, null);
1099 | IDENTIFIER OPEN_BRACKET opt_expression CLOSE_BRACKET
1101 Report.Error (650, ((LocatedToken) $1).Location, "Syntax error, bad array declarator. To declare a managed array the rank specifier precedes the variable's identifier. " +
1102 "To declare a fixed size buffer field, use the fixed keyword before the field type");
1107 variable_initializer
1116 | STACKALLOC type OPEN_BRACKET expression CLOSE_BRACKET
1118 $$ = new StackAlloc ((Expression) $2, (Expression) $4, (Location) $1);
1122 $$ = new ArglistAccess ((Location) $1);
1126 Report.Error (1575, (Location) $1, "A stackalloc expression requires [] after type");
1133 anonymous_host = (IAnonymousHost) $1;
1134 if (RootContext.Documentation != null)
1135 Lexer.doc_state = XmlCommentState.NotAllowed;
1139 Method method = (Method) $1;
1140 method.Block = (ToplevelBlock) $3;
1141 current_container.AddMethod (method);
1143 anonymous_host = null;
1144 current_generic_method = null;
1145 current_local_parameters = null;
1147 if (RootContext.Documentation != null)
1148 Lexer.doc_state = XmlCommentState.Allowed;
1161 Report.Error (1585, lexer.Location,
1162 "Member modifier `{0}' must precede the member type and name",
1163 Modifiers.Name (i));
1172 // This rule is used to handle the cases where OPEN_PARENS_LAMBDA
1173 // is returned (type followed by an identifier), these are the
1174 // declarations (methods, overloads, constructors, etc) and a handful
1175 // of expressions ("using", "fixed") or "catch".
1179 | OPEN_PARENS_LAMBDA
1188 arglist_allowed = true;
1190 opt_formal_parameter_list CLOSE_PARENS
1192 lexer.ConstraintsParsing = true;
1194 opt_type_parameter_constraints_clauses
1196 lexer.ConstraintsParsing = false;
1197 arglist_allowed = false;
1198 MemberName name = (MemberName) $4;
1199 current_local_parameters = (Parameters) $7;
1201 if ($10 != null && name.TypeArguments == null)
1202 Report.Error (80, lexer.Location,
1203 "Constraints are not allowed on non-generic declarations");
1207 GenericMethod generic = null;
1208 if (name.TypeArguments != null) {
1209 generic = new GenericMethod (current_namespace, current_class, name,
1210 (FullNamedExpression) $3, current_local_parameters);
1212 generic.SetParameterInfo ((ArrayList) $10);
1215 method = new Method (current_class, generic, (FullNamedExpression) $3, (int) $2, false,
1216 name, current_local_parameters, (Attributes) $1);
1218 anonymous_host = method;
1219 current_generic_method = generic;
1221 if (RootContext.Documentation != null)
1222 method.DocComment = Lexer.consume_doc_comment ();
1231 arglist_allowed = true;
1233 opt_formal_parameter_list CLOSE_PARENS
1235 lexer.ConstraintsParsing = true;
1237 opt_type_parameter_constraints_clauses
1239 lexer.ConstraintsParsing = false;
1240 arglist_allowed = false;
1242 MemberName name = (MemberName) $4;
1243 current_local_parameters = (Parameters) $7;
1245 if ($10 != null && name.TypeArguments == null)
1246 Report.Error (80, lexer.Location,
1247 "Constraints are not allowed on non-generic declarations");
1250 GenericMethod generic = null;
1251 if (name.TypeArguments != null) {
1252 generic = new GenericMethod (current_namespace, current_class, name,
1253 TypeManager.system_void_expr, current_local_parameters);
1255 generic.SetParameterInfo ((ArrayList) $10);
1258 method = new Method (current_class, generic, TypeManager.system_void_expr,
1259 (int) $2, false, name, current_local_parameters, (Attributes) $1);
1261 anonymous_host = method;
1262 current_generic_method = generic;
1264 if (RootContext.Documentation != null)
1265 method.DocComment = Lexer.consume_doc_comment ();
1273 open_parens opt_formal_parameter_list CLOSE_PARENS
1275 lexer.ConstraintsParsing = true;
1277 opt_type_parameter_constraints_clauses
1279 lexer.ConstraintsParsing = false;
1281 MemberName name = (MemberName) $5;
1282 current_local_parameters = (Parameters) $7;
1284 if ($9 != null && name.TypeArguments == null)
1285 Report.Error (80, lexer.Location,
1286 "Constraints are not allowed on non-generic declarations");
1289 GenericMethod generic = null;
1290 if (name.TypeArguments != null) {
1291 generic = new GenericMethod (current_namespace, current_class, name,
1292 TypeManager.system_void_expr, current_local_parameters);
1294 generic.SetParameterInfo ((ArrayList) $10);
1297 int modifiers = (int) $2;
1300 const int invalid_partial_mod = Modifiers.Accessibility | Modifiers.ABSTRACT | Modifiers.EXTERN |
1301 Modifiers.NEW | Modifiers.OVERRIDE | Modifiers.SEALED | Modifiers.VIRTUAL;
1303 if ((modifiers & invalid_partial_mod) != 0) {
1304 Report.Error (750, name.Location, "A partial method cannot define access modifier or " +
1305 "any of abstract, extern, new, override, sealed, or virtual modifiers");
1306 modifiers &= ~invalid_partial_mod;
1309 if ((current_class.ModFlags & Modifiers.PARTIAL) == 0) {
1310 Report.Error (751, name.Location, "A partial method must be declared within a " +
1311 "partial class or partial struct");
1314 modifiers |= Modifiers.PARTIAL | Modifiers.PRIVATE;
1316 method = new Method (current_class, generic, TypeManager.system_void_expr,
1317 modifiers, false, name, current_local_parameters, (Attributes) $1);
1319 anonymous_host = method;
1320 current_generic_method = generic;
1322 if (RootContext.Documentation != null)
1323 method.DocComment = Lexer.consume_doc_comment ();
1330 modifiers member_name open_parens opt_formal_parameter_list CLOSE_PARENS
1332 MemberName name = (MemberName) $5;
1333 Report.Error (1585, name.Location,
1334 "Member modifier `{0}' must precede the member type and name", Modifiers.Name ((int) $4));
1336 Method method = new Method (current_class, null, TypeManager.system_void_expr,
1337 0, false, name, (Parameters) $7, (Attributes) $1);
1339 current_local_parameters = (Parameters) $7;
1341 if (RootContext.Documentation != null)
1342 method.DocComment = Lexer.consume_doc_comment ();
1350 | SEMICOLON { $$ = null; }
1353 opt_formal_parameter_list
1354 : /* empty */ { $$ = Parameters.EmptyReadOnlyParameters; }
1355 | formal_parameter_list
1358 opt_parameter_list_no_mod
1359 : /* empty */ { $$ = Parameters.EmptyReadOnlyParameters; }
1362 parameter_modifiers_not_allowed = true;
1364 formal_parameter_list
1366 parameter_modifiers_not_allowed = false;
1371 formal_parameter_list
1374 ArrayList pars_list = (ArrayList) $1;
1376 Parameter [] pars = new Parameter [pars_list.Count];
1377 pars_list.CopyTo (pars);
1379 $$ = new Parameters (pars);
1381 | fixed_parameters COMMA parameter_array
1383 ArrayList pars_list = (ArrayList) $1;
1386 Parameter [] pars = new Parameter [pars_list.Count];
1387 pars_list.CopyTo (pars);
1389 $$ = new Parameters (pars);
1391 | fixed_parameters COMMA arglist_modifier
1393 ArrayList pars_list = (ArrayList) $1;
1394 //pars_list.Add (new ArglistParameter (GetLocation ($3)));
1396 Parameter [] pars = new Parameter [pars_list.Count];
1397 pars_list.CopyTo (pars);
1399 $$ = new Parameters (pars, true);
1401 | parameter_array COMMA error
1404 Report.Error (231, ((Parameter) $1).Location, "A params parameter must be the last parameter in a formal parameter list");
1407 | fixed_parameters COMMA parameter_array COMMA error
1410 Report.Error (231, ((Parameter) $3).Location, "A params parameter must be the last parameter in a formal parameter list");
1413 | arglist_modifier COMMA error
1415 Report.Error (257, (Location) $1, "An __arglist parameter must be the last parameter in a formal parameter list");
1418 | fixed_parameters COMMA ARGLIST COMMA error
1420 Report.Error (257, (Location) $3, "An __arglist parameter must be the last parameter in a formal parameter list");
1425 $$ = new Parameters (new Parameter[] { (Parameter) $1 } );
1429 $$ = new Parameters (new Parameter[0], true);
1436 ArrayList pars = new ArrayList (4);
1441 | fixed_parameters COMMA fixed_parameter
1443 ArrayList pars = (ArrayList) $1;
1444 Parameter p = (Parameter)$3;
1446 if (p.HasExtensionMethodModifier)
1447 Report.Error (1100, p.Location, "The parameter modifier `this' can only be used on the first parameter");
1456 opt_parameter_modifier
1460 LocatedToken lt = (LocatedToken) $4;
1461 $$ = new Parameter ((FullNamedExpression) $3, lt.Value, (Parameter.Modifier) $2, (Attributes) $1, lt.Location);
1464 opt_parameter_modifier
1466 IDENTIFIER OPEN_BRACKET CLOSE_BRACKET
1468 LocatedToken lt = (LocatedToken) $4;
1469 Report.Error (1552, lt.Location, "Array type specifier, [], must appear before parameter name");
1473 opt_parameter_modifier
1476 Report.Error (1001, GetLocation ($3), "Identifier expected");
1480 opt_parameter_modifier
1483 CheckIdentifierToken (yyToken, GetLocation ($4));
1487 opt_parameter_modifier
1493 LocatedToken lt = (LocatedToken) $4;
1494 Report.Error (241, lt.Location, "Default parameter specifiers are not permitted");
1499 opt_parameter_modifier
1500 : /* empty */ { $$ = Parameter.Modifier.NONE; }
1501 | parameter_modifiers
1505 : parameter_modifier
1509 | parameter_modifiers parameter_modifier
1511 Parameter.Modifier p2 = (Parameter.Modifier)$2;
1512 Parameter.Modifier mod = (Parameter.Modifier)$1 | p2;
1513 if (((Parameter.Modifier)$1 & p2) == p2) {
1514 Error_DuplicateParameterModifier (lexer.Location, p2);
1516 switch (mod & ~Parameter.Modifier.This) {
1517 case Parameter.Modifier.REF:
1518 Report.Error (1101, lexer.Location, "The parameter modifiers `this' and `ref' cannot be used altogether");
1520 case Parameter.Modifier.OUT:
1521 Report.Error (1102, lexer.Location, "The parameter modifiers `this' and `out' cannot be used altogether");
1524 Report.Error (1108, lexer.Location, "A parameter cannot have specified more than one modifier");
1535 if (parameter_modifiers_not_allowed)
1536 Error_ParameterModifierNotValid ("ref", (Location)$1);
1538 $$ = Parameter.Modifier.REF;
1542 if (parameter_modifiers_not_allowed)
1543 Error_ParameterModifierNotValid ("out", (Location)$1);
1545 $$ = Parameter.Modifier.OUT;
1549 if (parameter_modifiers_not_allowed)
1550 Error_ParameterModifierNotValid ("this", (Location)$1);
1552 if (RootContext.Version <= LanguageVersion.ISO_2)
1553 Report.FeatureIsNotAvailable (GetLocation ($1), "extension methods");
1555 $$ = Parameter.Modifier.This;
1560 : opt_attributes params_modifier type IDENTIFIER
1562 LocatedToken lt = (LocatedToken) $4;
1563 $$ = new ParamsParameter ((FullNamedExpression) $3, lt.Value, (Attributes) $1, lt.Location);
1565 | opt_attributes params_modifier type error {
1566 CheckIdentifierToken (yyToken, GetLocation ($4));
1574 if (params_modifiers_not_allowed)
1575 Report.Error (1670, ((Location) $1), "The `params' modifier is not allowed in current context");
1577 | PARAMS parameter_modifier
1579 Parameter.Modifier mod = (Parameter.Modifier)$2;
1580 if ((mod & Parameter.Modifier.This) != 0) {
1581 Report.Error (1104, (Location)$1, "The parameter modifiers `this' and `params' cannot be used altogether");
1583 Report.Error (1611, (Location)$1, "The params parameter cannot be declared as ref or out");
1586 | PARAMS params_modifier
1588 Error_DuplicateParameterModifier ((Location)$1, Parameter.Modifier.PARAMS);
1595 if (!arglist_allowed)
1596 Report.Error (1669, (Location) $1, "__arglist is not valid in this context");
1600 property_declaration
1604 namespace_or_type_name
1606 if (RootContext.Documentation != null)
1607 tmpComment = Lexer.consume_doc_comment ();
1611 implicit_value_parameter_type = (FullNamedExpression) $3;
1613 lexer.PropertyParsing = true;
1615 accessor_declarations
1617 lexer.PropertyParsing = false;
1618 has_get = has_set = false;
1626 Accessors accessors = (Accessors) $8;
1627 Accessor get_block = accessors.get_or_add;
1628 Accessor set_block = accessors.set_or_remove;
1630 MemberName name = (MemberName) $4;
1632 if (name.TypeArguments != null)
1633 syntax_error (lexer.Location, "a property can't have type arguments");
1635 prop = new Property (current_class, (FullNamedExpression) $3, (int) $2, false,
1636 name, (Attributes) $1, get_block, set_block, accessors.declared_in_reverse, current_block);
1638 current_container.AddProperty (prop);
1639 implicit_value_parameter_type = null;
1641 if (RootContext.Documentation != null)
1642 prop.DocComment = ConsumeStoredComment ();
1647 accessor_declarations
1648 : get_accessor_declaration
1650 $$ = new Accessors ((Accessor) $1, null);
1652 | get_accessor_declaration accessor_declarations
1654 Accessors accessors = (Accessors) $2;
1655 accessors.get_or_add = (Accessor) $1;
1658 | set_accessor_declaration
1660 $$ = new Accessors (null, (Accessor) $1);
1662 | set_accessor_declaration accessor_declarations
1664 Accessors accessors = (Accessors) $2;
1665 accessors.set_or_remove = (Accessor) $1;
1666 accessors.declared_in_reverse = true;
1671 Report.Error (1014, GetLocation ($1), "A get or set accessor expected");
1676 get_accessor_declaration
1677 : opt_attributes opt_modifiers GET
1679 // If this is not the case, then current_local_parameters has already
1680 // been set in indexer_declaration
1681 if (parsing_indexer == false)
1682 current_local_parameters = null;
1684 current_local_parameters = indexer_parameters;
1685 lexer.PropertyParsing = false;
1687 anonymous_host = SimpleAnonymousHost.GetSimple ();
1692 Report.Error (1007, (Location) $3, "Property accessor already defined");
1695 Accessor accessor = new Accessor ((ToplevelBlock) $5, (int) $2, (Attributes) $1, (Location) $3);
1697 current_local_parameters = null;
1698 lexer.PropertyParsing = true;
1700 SimpleAnonymousHost.Simple.Propagate (accessor);
1701 anonymous_host = null;
1703 if (RootContext.Documentation != null)
1704 if (Lexer.doc_state == XmlCommentState.Error)
1705 Lexer.doc_state = XmlCommentState.NotAllowed;
1711 set_accessor_declaration
1712 : opt_attributes opt_modifiers SET
1715 Parameter implicit_value_parameter = new Parameter (
1716 implicit_value_parameter_type, "value",
1717 Parameter.Modifier.NONE, null, (Location) $3);
1719 if (parsing_indexer == false) {
1720 args = new Parameter [1];
1721 args [0] = implicit_value_parameter;
1722 current_local_parameters = new Parameters (args);
1724 Parameter [] fpars = indexer_parameters.FixedParameters;
1727 int count = fpars.Length;
1729 args = new Parameter [count + 1];
1730 fpars.CopyTo (args, 0);
1731 args [count] = implicit_value_parameter;
1734 current_local_parameters = new Parameters (
1738 lexer.PropertyParsing = false;
1740 anonymous_host = SimpleAnonymousHost.GetSimple ();
1745 Report.Error (1007, ((LocatedToken) $3).Location, "Property accessor already defined");
1748 Accessor accessor = new Accessor ((ToplevelBlock) $5, (int) $2, (Attributes) $1, (Location) $3);
1750 current_local_parameters = null;
1751 lexer.PropertyParsing = true;
1753 SimpleAnonymousHost.Simple.Propagate (accessor);
1754 anonymous_host = null;
1756 if (RootContext.Documentation != null
1757 && Lexer.doc_state == XmlCommentState.Error)
1758 Lexer.doc_state = XmlCommentState.NotAllowed;
1766 | SEMICOLON { $$ = null; }
1769 interface_declaration
1775 lexer.ConstraintsParsing = true;
1779 MemberName name = MakeName ((MemberName) $6);
1780 push_current_class (new Interface (current_namespace, current_class, name, (int) $2, (Attributes) $1), $3);
1783 opt_type_parameter_constraints_clauses
1785 lexer.ConstraintsParsing = false;
1787 current_class.SetParameterInfo ((ArrayList) $9);
1789 if (RootContext.Documentation != null) {
1790 current_container.DocComment = Lexer.consume_doc_comment ();
1791 Lexer.doc_state = XmlCommentState.Allowed;
1796 if (RootContext.Documentation != null)
1797 Lexer.doc_state = XmlCommentState.Allowed;
1801 $$ = pop_current_class ();
1803 | opt_attributes opt_modifiers opt_partial INTERFACE error {
1804 CheckIdentifierToken (yyToken, GetLocation ($5));
1810 opt_interface_member_declarations
1814 opt_interface_member_declarations
1816 | interface_member_declarations
1819 interface_member_declarations
1820 : interface_member_declaration
1821 | interface_member_declarations interface_member_declaration
1824 interface_member_declaration
1825 : interface_method_declaration
1830 Method m = (Method) $1;
1832 if (m.IsExplicitImpl)
1833 Report.Error (541, m.Location, "`{0}': explicit interface declaration can only be declared in a class or struct",
1834 m.GetSignatureForError ());
1836 current_container.AddMethod (m);
1838 if (RootContext.Documentation != null)
1839 Lexer.doc_state = XmlCommentState.Allowed;
1841 | interface_property_declaration
1846 Property p = (Property) $1;
1848 if (p.IsExplicitImpl)
1849 Report.Error (541, p.Location, "`{0}': explicit interface declaration can only be declared in a class or struct",
1850 p.GetSignatureForError ());
1852 current_container.AddProperty (p);
1854 if (RootContext.Documentation != null)
1855 Lexer.doc_state = XmlCommentState.Allowed;
1857 | interface_event_declaration
1860 Event e = (Event) $1;
1862 if (e.IsExplicitImpl)
1863 Report.Error (541, e.Location, "`{0}': explicit interface declaration can only be declared in a class or struct",
1864 e.GetSignatureForError ());
1866 current_container.AddEvent (e);
1869 if (RootContext.Documentation != null)
1870 Lexer.doc_state = XmlCommentState.Allowed;
1872 | interface_indexer_declaration
1877 Indexer i = (Indexer) $1;
1879 if (i.IsExplicitImpl)
1880 Report.Error (541, i.Location, "`{0}': explicit interface declaration can only be declared in a class or struct",
1881 i.GetSignatureForError ());
1883 current_container.AddIndexer (i);
1885 if (RootContext.Documentation != null)
1886 Lexer.doc_state = XmlCommentState.Allowed;
1888 | delegate_declaration
1891 Report.Error (524, GetLocation ($1), "`{0}': Interfaces cannot declare classes, structs, interfaces, delegates, enumerations or constants",
1892 ((MemberCore)$1).GetSignatureForError ());
1898 Report.Error (524, GetLocation ($1), "`{0}': Interfaces cannot declare classes, structs, interfaces, delegates, enumerations or constants",
1899 ((MemberCore)$1).GetSignatureForError ());
1902 | struct_declaration
1905 Report.Error (524, GetLocation ($1), "`{0}': Interfaces cannot declare classes, structs, interfaces, delegates, enumerations or constants",
1906 ((MemberCore)$1).GetSignatureForError ());
1912 Report.Error (524, GetLocation ($1), "`{0}': Interfaces cannot declare classes, structs, interfaces, delegates, enumerations or constants",
1913 ((MemberCore)$1).GetSignatureForError ());
1916 | interface_declaration
1919 Report.Error (524, GetLocation ($1), "`{0}': Interfaces cannot declare classes, structs, interfaces, delegates, enumerations or constants",
1920 ((MemberCore)$1).GetSignatureForError ());
1923 | constant_declaration
1925 Report.Error (525, GetLocation ($1), "Interfaces cannot contain fields or constants");
1933 val = Modifiers.Check (Modifiers.NEW | Modifiers.UNSAFE, val, 0, GetLocation ($1));
1938 interface_method_declaration_body
1941 Report.Error (531, (Location)$1,
1942 "`{0}.{1}{2}': interface members cannot have a definition",
1943 current_class.GetSignatureForError (),
1944 ((MemberName) $-0).GetSignatureForError (),
1945 ((Parameters)$-4).GetSignatureForError ());
1947 lexer.ConstraintsParsing = false;
1949 opt_statement_list CLOSE_BRACE
1956 interface_method_declaration
1957 : opt_attributes opt_new type namespace_or_type_name
1958 open_parens opt_formal_parameter_list CLOSE_PARENS
1960 lexer.ConstraintsParsing = true;
1962 opt_type_parameter_constraints_clauses
1964 // Refer to the name as $-1 in interface_method_declaration_body
1967 interface_method_declaration_body
1969 lexer.ConstraintsParsing = false;
1971 MemberName name = (MemberName) $4;
1973 if ($9 != null && name.TypeArguments == null)
1974 Report.Error (80, lexer.Location,
1975 "Constraints are not allowed on non-generic declarations");
1977 GenericMethod generic = null;
1978 if (name.TypeArguments != null) {
1979 generic = new GenericMethod (current_namespace, current_class, name,
1980 (FullNamedExpression) $3, (Parameters) $6);
1982 generic.SetParameterInfo ((ArrayList) $9);
1985 $$ = new Method (current_class, generic, (FullNamedExpression) $3, (int) $2, true, name,
1986 (Parameters) $6, (Attributes) $1);
1987 if (RootContext.Documentation != null)
1988 ((Method) $$).DocComment = Lexer.consume_doc_comment ();
1990 | opt_attributes opt_new VOID namespace_or_type_name
1991 open_parens opt_formal_parameter_list CLOSE_PARENS
1993 lexer.ConstraintsParsing = true;
1995 opt_type_parameter_constraints_clauses
1999 interface_method_declaration_body
2001 lexer.ConstraintsParsing = false;
2003 MemberName name = (MemberName) $4;
2005 if ($9 != null && name.TypeArguments == null)
2006 Report.Error (80, lexer.Location,
2007 "Constraints are not allowed on non-generic declarations");
2009 GenericMethod generic = null;
2010 if (name.TypeArguments != null) {
2011 generic = new GenericMethod (current_namespace, current_class, name,
2012 TypeManager.system_void_expr, (Parameters) $6);
2014 generic.SetParameterInfo ((ArrayList) $9);
2017 $$ = new Method (current_class, generic, TypeManager.system_void_expr, (int) $2,
2018 true, name, (Parameters) $6, (Attributes) $1);
2019 if (RootContext.Documentation != null)
2020 ((Method) $$).DocComment = Lexer.consume_doc_comment ();
2024 interface_property_declaration
2030 lexer.PropertyParsing = true;
2031 implicit_value_parameter_type = (FullNamedExpression)$3;
2033 accessor_declarations
2035 has_get = has_set = false;
2036 lexer.PropertyParsing = false;
2037 implicit_value_parameter_type = null;
2041 LocatedToken lt = (LocatedToken) $4;
2042 MemberName name = new MemberName (lt.Value, lt.Location);
2044 if ($3 == TypeManager.system_void_expr) {
2045 Report.Error (547, lt.Location, "`{0}': property or indexer cannot have void type", lt.Value);
2051 p = new Property (current_class, (FullNamedExpression) $3, (int) $2, true,
2052 name, (Attributes) $1,
2055 Report.Error (548, p.Location, "`{0}': property or indexer must have at least one accessor", p.GetSignatureForError ());
2059 Accessors accessor = (Accessors) $7;
2060 p = new Property (current_class, (FullNamedExpression) $3, (int) $2, true,
2061 name, (Attributes) $1,
2062 accessor.get_or_add, accessor.set_or_remove, accessor.declared_in_reverse);
2064 if (accessor.get_or_add != null && accessor.get_or_add.Block != null) {
2065 Report.Error (531, p.Location, "`{0}.get': interface members cannot have a definition", p.GetSignatureForError ());
2070 if (accessor.set_or_remove != null && accessor.set_or_remove.Block != null) {
2071 Report.Error (531, p.Location, "`{0}.set': interface members cannot have a definition", p.GetSignatureForError ());
2076 if (RootContext.Documentation != null)
2077 p.DocComment = Lexer.consume_doc_comment ();
2084 CheckIdentifierToken (yyToken, GetLocation ($4));
2090 interface_event_declaration
2091 : opt_attributes opt_new EVENT type IDENTIFIER SEMICOLON
2093 LocatedToken lt = (LocatedToken) $5;
2094 $$ = new EventField (current_class, (FullNamedExpression) $4, (int) $2, true,
2095 new MemberName (lt.Value, lt.Location),
2097 if (RootContext.Documentation != null)
2098 ((EventField) $$).DocComment = Lexer.consume_doc_comment ();
2100 | opt_attributes opt_new EVENT type error {
2101 CheckIdentifierToken (yyToken, GetLocation ($5));
2104 | opt_attributes opt_new EVENT type IDENTIFIER ASSIGN {
2105 LocatedToken lt = (LocatedToken) $5;
2106 Report.Error (68, lt.Location, "`{0}.{1}': event in interface cannot have initializer", current_container.Name, lt.Value);
2109 | opt_attributes opt_new EVENT type IDENTIFIER OPEN_BRACE
2111 implicit_value_parameter_type = (FullNamedExpression) $4;
2112 lexer.EventParsing = true;
2114 event_accessor_declarations
2116 lexer.EventParsing = false;
2117 implicit_value_parameter_type = null;
2120 Report.Error (69, (Location) $3, "Event in interface cannot have add or remove accessors");
2125 interface_indexer_declaration
2126 : opt_attributes opt_new type THIS
2127 OPEN_BRACKET opt_parameter_list_no_mod CLOSE_BRACKET
2130 lexer.PropertyParsing = true;
2131 implicit_value_parameter_type = (FullNamedExpression)$3;
2133 accessor_declarations
2135 has_get = has_set = false;
2136 lexer.PropertyParsing = false;
2137 implicit_value_parameter_type = null;
2143 i = new Indexer (current_class, (FullNamedExpression) $3,
2144 new MemberName (TypeContainer.DefaultIndexerName, (Location) $4),
2145 (int) $2, true, (Parameters) $6, (Attributes) $1,
2148 Report.Error (548, i.Location, "`{0}': property or indexer must have at least one accessor", i.GetSignatureForError ());
2152 Accessors accessors = (Accessors) $10;
2153 i = new Indexer (current_class, (FullNamedExpression) $3,
2154 new MemberName (TypeContainer.DefaultIndexerName, (Location) $4),
2155 (int) $2, true, (Parameters) $6, (Attributes) $1,
2156 accessors.get_or_add, accessors.set_or_remove, accessors.declared_in_reverse);
2158 if (accessors.get_or_add != null && accessors.get_or_add.Block != null) {
2159 Report.Error (531, i.Location, "`{0}.get': interface members cannot have a definition", i.GetSignatureForError ());
2164 if (accessors.set_or_remove != null && accessors.set_or_remove.Block != null) {
2165 Report.Error (531, i.Location, "`{0}.set': interface members cannot have a definition", i.GetSignatureForError ());
2170 if (RootContext.Documentation != null)
2171 i.DocComment = ConsumeStoredComment ();
2177 operator_declaration
2178 : opt_attributes opt_modifiers operator_declarator
2180 anonymous_host = SimpleAnonymousHost.GetSimple ();
2187 OperatorDeclaration decl = (OperatorDeclaration) $3;
2188 Operator op = new Operator (
2189 current_class, decl.optype, decl.ret_type, (int) $2,
2190 current_local_parameters,
2191 (ToplevelBlock) $5, (Attributes) $1, decl.location);
2193 if (RootContext.Documentation != null) {
2194 op.DocComment = tmpComment;
2195 Lexer.doc_state = XmlCommentState.Allowed;
2198 SimpleAnonymousHost.Simple.Propagate (op);
2199 anonymous_host = null;
2201 // Note again, checking is done in semantic analysis
2202 current_container.AddOperator (op);
2204 current_local_parameters = null;
2210 | SEMICOLON { $$ = null; }
2214 : type OPERATOR overloadable_operator open_parens
2216 params_modifiers_not_allowed = true;
2218 opt_parameter_list_no_mod CLOSE_PARENS
2220 params_modifiers_not_allowed = false;
2222 Location loc = (Location) $2;
2223 Operator.OpType op = (Operator.OpType) $3;
2224 current_local_parameters = (Parameters)$6;
2226 int p_count = current_local_parameters.Count;
2228 if (op == Operator.OpType.Addition)
2229 op = Operator.OpType.UnaryPlus;
2230 else if (op == Operator.OpType.Subtraction)
2231 op = Operator.OpType.UnaryNegation;
2234 if (IsUnaryOperator (op)) {
2236 Report.Error (1020, loc, "Overloadable binary operator expected");
2237 } else if (p_count != 1) {
2238 Report.Error (1535, loc, "Overloaded unary operator `{0}' takes one parameter",
2239 Operator.GetName (op));
2243 Report.Error (1534, loc, "Overloaded binary operator `{0}' takes two parameters",
2244 Operator.GetName (op));
2245 } else if (p_count != 2) {
2246 Report.Error (1019, loc, "Overloadable unary operator expected");
2250 if (RootContext.Documentation != null) {
2251 tmpComment = Lexer.consume_doc_comment ();
2252 Lexer.doc_state = XmlCommentState.NotAllowed;
2255 $$ = new OperatorDeclaration (op, (FullNamedExpression) $1, loc);
2257 | conversion_operator_declarator
2260 overloadable_operator
2262 : BANG { $$ = Operator.OpType.LogicalNot; }
2263 | TILDE { $$ = Operator.OpType.OnesComplement; }
2264 | OP_INC { $$ = Operator.OpType.Increment; }
2265 | OP_DEC { $$ = Operator.OpType.Decrement; }
2266 | TRUE { $$ = Operator.OpType.True; }
2267 | FALSE { $$ = Operator.OpType.False; }
2268 // Unary and binary:
2269 | PLUS { $$ = Operator.OpType.Addition; }
2270 | MINUS { $$ = Operator.OpType.Subtraction; }
2272 | STAR { $$ = Operator.OpType.Multiply; }
2273 | DIV { $$ = Operator.OpType.Division; }
2274 | PERCENT { $$ = Operator.OpType.Modulus; }
2275 | BITWISE_AND { $$ = Operator.OpType.BitwiseAnd; }
2276 | BITWISE_OR { $$ = Operator.OpType.BitwiseOr; }
2277 | CARRET { $$ = Operator.OpType.ExclusiveOr; }
2278 | OP_SHIFT_LEFT { $$ = Operator.OpType.LeftShift; }
2279 | OP_SHIFT_RIGHT { $$ = Operator.OpType.RightShift; }
2280 | OP_EQ { $$ = Operator.OpType.Equality; }
2281 | OP_NE { $$ = Operator.OpType.Inequality; }
2282 | OP_GT { $$ = Operator.OpType.GreaterThan; }
2283 | OP_LT { $$ = Operator.OpType.LessThan; }
2284 | OP_GE { $$ = Operator.OpType.GreaterThanOrEqual; }
2285 | OP_LE { $$ = Operator.OpType.LessThanOrEqual; }
2288 conversion_operator_declarator
2289 : IMPLICIT OPERATOR type open_parens
2291 params_modifiers_not_allowed = true;
2293 opt_parameter_list_no_mod CLOSE_PARENS
2295 params_modifiers_not_allowed = false;
2297 Location loc = (Location) $2;
2298 current_local_parameters = (Parameters)$6;
2300 if (RootContext.Documentation != null) {
2301 tmpComment = Lexer.consume_doc_comment ();
2302 Lexer.doc_state = XmlCommentState.NotAllowed;
2305 $$ = new OperatorDeclaration (Operator.OpType.Implicit, (FullNamedExpression) $3, loc);
2307 | EXPLICIT OPERATOR type open_parens
2309 params_modifiers_not_allowed = true;
2311 opt_parameter_list_no_mod CLOSE_PARENS
2313 params_modifiers_not_allowed = false;
2315 Location loc = (Location) $2;
2316 current_local_parameters = (Parameters)$6;
2318 if (RootContext.Documentation != null) {
2319 tmpComment = Lexer.consume_doc_comment ();
2320 Lexer.doc_state = XmlCommentState.NotAllowed;
2323 $$ = new OperatorDeclaration (Operator.OpType.Explicit, (FullNamedExpression) $3, loc);
2327 syntax_error ((Location) $1, "'operator' expected");
2331 syntax_error ((Location) $1, "'operator' expected");
2335 constructor_declaration
2338 constructor_declarator
2341 Constructor c = (Constructor) $3;
2342 c.Block = (ToplevelBlock) $4;
2343 c.OptAttributes = (Attributes) $1;
2344 int yield_method = c.ModFlags & Modifiers.METHOD_YIELDS;
2345 int mods = (int) $2;
2347 if (RootContext.Documentation != null)
2348 c.DocComment = ConsumeStoredComment ();
2350 if ((mods & Modifiers.STATIC) != 0 && c.Name == current_container.Basename) {
2351 if ((mods & Modifiers.Accessibility) != 0){
2352 Report.Error (515, c.Location,
2353 "`{0}': access modifiers are not allowed on static constructors",
2354 c.GetSignatureForError ());
2357 if (c.Initializer != null){
2358 Report.Error (514, c.Location,
2359 "`{0}': static constructor cannot have an explicit `this' or `base' constructor call",
2360 c.GetSignatureForError ());
2364 c.ModFlags = Modifiers.Check (Constructor.AllowedModifiers, mods, Modifiers.PRIVATE, c.Location) | yield_method;
2365 current_container.AddConstructor (c);
2367 current_local_parameters = null;
2368 if (RootContext.Documentation != null)
2369 Lexer.doc_state = XmlCommentState.Allowed;
2373 constructor_declarator
2374 : constructor_header
2378 | constructor_header constructor_initializer
2380 ((Constructor)$1).Initializer = (ConstructorInitializer) $2;
2388 if (RootContext.Documentation != null) {
2389 tmpComment = Lexer.consume_doc_comment ();
2390 Lexer.doc_state = XmlCommentState.Allowed;
2393 open_parens opt_formal_parameter_list CLOSE_PARENS
2395 LocatedToken lt = (LocatedToken) $1;
2396 current_local_parameters = (Parameters) $4;
2397 current_block = new ToplevelBlock (null, current_local_parameters, null, lt.Location);
2399 $$ = new Constructor (current_class, lt.Value, 0, current_local_parameters,
2402 anonymous_host = (IAnonymousHost) $$;
2408 | SEMICOLON { current_block = null; $$ = null; }
2411 constructor_initializer
2412 : COLON BASE open_parens opt_argument_list CLOSE_PARENS
2414 $$ = new ConstructorBaseInitializer ((ArrayList) $4, (Location) $2);
2416 | COLON THIS open_parens opt_argument_list CLOSE_PARENS
2418 $$ = new ConstructorThisInitializer ((ArrayList) $4, (Location) $2);
2421 Report.Error (1018, (Location) $1, "Keyword this or base expected");
2427 : /* EMPTY */ { $$ = 0; }
2428 | UNSAFE { $$ = Modifiers.UNSAFE; }
2429 | EXTERN { $$ = Modifiers.EXTERN; }
2432 destructor_declaration
2433 : opt_attributes opt_finalizer TILDE
2435 if (RootContext.Documentation != null) {
2436 tmpComment = Lexer.consume_doc_comment ();
2437 Lexer.doc_state = XmlCommentState.NotAllowed;
2440 IDENTIFIER OPEN_PARENS CLOSE_PARENS block
2442 LocatedToken lt = (LocatedToken) $5;
2443 if (lt.Value != current_container.MemberName.Name){
2444 Report.Error (574, lt.Location, "Name of destructor must match name of class");
2445 } else if (current_container.Kind != Kind.Class){
2446 Report.Error (575, lt.Location, "Only class types can contain destructor");
2448 Location l = lt.Location;
2451 if (!RootContext.StdLib && current_container.Name == "System.Object")
2452 m |= Modifiers.PROTECTED | Modifiers.VIRTUAL;
2454 m |= Modifiers.PROTECTED | Modifiers.OVERRIDE;
2456 Method d = new Destructor (
2457 current_class, TypeManager.system_void_expr, m, "Finalize",
2458 Parameters.EmptyReadOnlyParameters, (Attributes) $1, l);
2459 if (RootContext.Documentation != null)
2460 d.DocComment = ConsumeStoredComment ();
2462 d.Block = (ToplevelBlock) $8;
2463 current_container.AddMethod (d);
2471 EVENT type variable_declarators SEMICOLON
2473 current_array_type = null;
2474 foreach (VariableDeclaration var in (ArrayList) $5) {
2476 MemberName name = new MemberName (var.identifier,
2479 EventField e = new EventField (
2480 current_class, (FullNamedExpression) $4, (int) $2, false, name,
2483 e.Initializer = var.expression_or_array_initializer;
2485 current_container.AddEvent (e);
2487 if (RootContext.Documentation != null) {
2488 e.DocComment = Lexer.consume_doc_comment ();
2489 Lexer.doc_state = XmlCommentState.Allowed;
2495 EVENT type namespace_or_type_name
2498 implicit_value_parameter_type = (FullNamedExpression) $4;
2499 lexer.EventParsing = true;
2501 event_accessor_declarations
2503 lexer.EventParsing = false;
2507 MemberName name = (MemberName) $5;
2510 Report.Error (65, (Location) $3, "`{0}.{1}': event property must have both add and remove accessors",
2511 current_container.Name, name.GetSignatureForError ());
2514 Accessors accessors = (Accessors) $8;
2516 if (name.TypeArguments != null)
2517 syntax_error (lexer.Location, "an event can't have type arguments");
2519 if (accessors.get_or_add == null || accessors.set_or_remove == null)
2520 // CS0073 is already reported, so no CS0065 here.
2523 Event e = new EventProperty (
2524 current_class, (FullNamedExpression) $4, (int) $2, false, name,
2525 (Attributes) $1, accessors.get_or_add, accessors.set_or_remove);
2526 if (RootContext.Documentation != null) {
2527 e.DocComment = Lexer.consume_doc_comment ();
2528 Lexer.doc_state = XmlCommentState.Allowed;
2531 current_container.AddEvent (e);
2532 implicit_value_parameter_type = null;
2536 | opt_attributes opt_modifiers EVENT type namespace_or_type_name error {
2537 MemberName mn = (MemberName) $5;
2539 if (mn.Left != null)
2540 Report.Error (71, mn.Location, "An explicit interface implementation of an event must use property syntax");
2542 Report.Error (71, mn.Location, "Event declaration should use property syntax");
2544 if (RootContext.Documentation != null)
2545 Lexer.doc_state = XmlCommentState.Allowed;
2549 event_accessor_declarations
2550 : add_accessor_declaration remove_accessor_declaration
2552 $$ = new Accessors ((Accessor) $1, (Accessor) $2);
2554 | remove_accessor_declaration add_accessor_declaration
2556 Accessors accessors = new Accessors ((Accessor) $2, (Accessor) $1);
2557 accessors.declared_in_reverse = true;
2560 | add_accessor_declaration { $$ = null; }
2561 | remove_accessor_declaration { $$ = null; }
2564 Report.Error (1055, GetLocation ($1), "An add or remove accessor expected");
2570 add_accessor_declaration
2571 : opt_attributes ADD
2573 Parameter [] args = new Parameter [1];
2574 Parameter implicit_value_parameter = new Parameter (
2575 implicit_value_parameter_type, "value",
2576 Parameter.Modifier.NONE, null, (Location) $2);
2578 args [0] = implicit_value_parameter;
2580 current_local_parameters = new Parameters (args);
2581 lexer.EventParsing = false;
2583 anonymous_host = SimpleAnonymousHost.GetSimple ();
2587 Accessor accessor = new Accessor ((ToplevelBlock) $4, 0, (Attributes) $1, (Location) $2);
2588 lexer.EventParsing = true;
2590 current_local_parameters = null;
2591 SimpleAnonymousHost.Simple.Propagate (accessor);
2592 anonymous_host = null;
2596 | opt_attributes ADD error {
2597 Report.Error (73, (Location) $2, "An add or remove accessor must have a body");
2600 | opt_attributes modifiers ADD {
2601 Report.Error (1609, (Location) $3, "Modifiers cannot be placed on event accessor declarations");
2606 remove_accessor_declaration
2607 : opt_attributes REMOVE
2609 Parameter [] args = new Parameter [1];
2610 Parameter implicit_value_parameter = new Parameter (
2611 implicit_value_parameter_type, "value",
2612 Parameter.Modifier.NONE, null, (Location) $2);
2614 args [0] = implicit_value_parameter;
2616 current_local_parameters = new Parameters (args);
2617 lexer.EventParsing = false;
2621 $$ = new Accessor ((ToplevelBlock) $4, 0, (Attributes) $1, (Location) $2);
2622 lexer.EventParsing = true;
2623 current_local_parameters = null;
2625 | opt_attributes REMOVE error {
2626 Report.Error (73, (Location) $2, "An add or remove accessor must have a body");
2629 | opt_attributes modifiers REMOVE {
2630 Report.Error (1609, (Location) $3, "Modifiers cannot be placed on event accessor declarations");
2636 : opt_attributes opt_modifiers indexer_declarator
2639 IndexerDeclaration decl = (IndexerDeclaration) $3;
2641 implicit_value_parameter_type = decl.type;
2643 lexer.PropertyParsing = true;
2644 parsing_indexer = true;
2646 indexer_parameters = decl.param_list;
2647 anonymous_host = SimpleAnonymousHost.GetSimple ();
2649 accessor_declarations
2651 lexer.PropertyParsing = false;
2652 has_get = has_set = false;
2653 parsing_indexer = false;
2660 // The signature is computed from the signature of the indexer. Look
2661 // at section 3.6 on the spec
2663 IndexerDeclaration decl = (IndexerDeclaration) $3;
2664 Location loc = decl.location;
2665 Accessors accessors = (Accessors) $6;
2666 Accessor get_block = accessors.get_or_add;
2667 Accessor set_block = accessors.set_or_remove;
2670 if (decl.interface_type != null)
2671 name = new MemberName (decl.interface_type, TypeContainer.DefaultIndexerName, loc);
2673 name = new MemberName (TypeContainer.DefaultIndexerName, loc);
2675 indexer = new Indexer (current_class, decl.type, name,
2676 (int) $2, false, decl.param_list, (Attributes) $1,
2677 get_block, set_block, accessors.declared_in_reverse);
2679 if (RootContext.Documentation != null)
2680 indexer.DocComment = ConsumeStoredComment ();
2682 current_container.AddIndexer (indexer);
2684 current_local_parameters = null;
2685 implicit_value_parameter_type = null;
2686 indexer_parameters = null;
2691 : type THIS OPEN_BRACKET opt_parameter_list_no_mod CLOSE_BRACKET
2693 Parameters pars = (Parameters) $4;
2695 Report.Error (1551, (Location) $2, "Indexers must have at least one parameter");
2697 if (RootContext.Documentation != null) {
2698 tmpComment = Lexer.consume_doc_comment ();
2699 Lexer.doc_state = XmlCommentState.Allowed;
2702 $$ = new IndexerDeclaration ((FullNamedExpression) $1, null, pars, (Location) $2);
2704 | type namespace_or_type_name DOT THIS OPEN_BRACKET opt_formal_parameter_list CLOSE_BRACKET
2706 Parameters pars = (Parameters) $6;
2708 Report.Error (1551, (Location) $4, "Indexers must have at least one parameter");
2711 MemberName name = (MemberName) $2;
2712 $$ = new IndexerDeclaration ((FullNamedExpression) $1, name, pars, (Location) $4);
2714 if (RootContext.Documentation != null) {
2715 tmpComment = Lexer.consume_doc_comment ();
2716 Lexer.doc_state = XmlCommentState.Allowed;
2726 if (RootContext.Documentation != null)
2727 enumTypeComment = Lexer.consume_doc_comment ();
2732 LocatedToken lt = (LocatedToken) $4;
2733 Location enum_location = lt.Location;
2735 MemberName name = MakeName (new MemberName (lt.Value, enum_location));
2736 Enum e = new Enum (current_namespace, current_class, (FullNamedExpression) $5, (int) $2,
2737 name, (Attributes) $1);
2739 if (RootContext.Documentation != null)
2740 e.DocComment = enumTypeComment;
2743 EnumMember em = null;
2744 foreach (VariableDeclaration ev in (ArrayList) $7) {
2745 em = new EnumMember (
2746 e, em, ev.identifier, (Expression) ev.expression_or_array_initializer,
2747 ev.OptAttributes, ev.Location);
2749 // if (RootContext.Documentation != null)
2750 em.DocComment = ev.DocComment;
2752 e.AddEnumMember (em);
2755 current_container.AddTypeContainer (e);
2762 : /* empty */ { $$ = TypeManager.system_int32_expr; }
2763 | COLON type { $$ = $2; }
2769 if (RootContext.Documentation != null)
2770 Lexer.doc_state = XmlCommentState.Allowed;
2772 opt_enum_member_declarations
2774 // here will be evaluated after CLOSE_BLACE is consumed.
2775 if (RootContext.Documentation != null)
2776 Lexer.doc_state = XmlCommentState.Allowed;
2784 opt_enum_member_declarations
2785 : /* empty */ { $$ = new ArrayList (4); }
2786 | enum_member_declarations opt_comma { $$ = $1; }
2789 enum_member_declarations
2790 : enum_member_declaration
2792 ArrayList l = new ArrayList (4);
2797 | enum_member_declarations COMMA enum_member_declaration
2799 ArrayList l = (ArrayList) $1;
2807 enum_member_declaration
2808 : opt_attributes IDENTIFIER
2810 VariableDeclaration vd = new VariableDeclaration (
2811 (LocatedToken) $2, null, (Attributes) $1);
2813 if (RootContext.Documentation != null) {
2814 vd.DocComment = Lexer.consume_doc_comment ();
2815 Lexer.doc_state = XmlCommentState.Allowed;
2820 | opt_attributes IDENTIFIER
2822 if (RootContext.Documentation != null) {
2823 tmpComment = Lexer.consume_doc_comment ();
2824 Lexer.doc_state = XmlCommentState.NotAllowed;
2829 VariableDeclaration vd = new VariableDeclaration (
2830 (LocatedToken) $2, $5, (Attributes) $1);
2832 if (RootContext.Documentation != null)
2833 vd.DocComment = ConsumeStoredComment ();
2839 delegate_declaration
2844 open_parens opt_formal_parameter_list CLOSE_PARENS
2846 MemberName name = MakeName ((MemberName) $5);
2847 Parameters p = (Parameters) $7;
2849 Delegate del = new Delegate (current_namespace, current_class, (FullNamedExpression) $4,
2850 (int) $2, name, p, (Attributes) $1);
2852 if (RootContext.Documentation != null) {
2853 del.DocComment = Lexer.consume_doc_comment ();
2854 Lexer.doc_state = XmlCommentState.Allowed;
2857 current_container.AddDelegate (del);
2858 current_delegate = del;
2859 lexer.ConstraintsParsing = true;
2861 opt_type_parameter_constraints_clauses
2863 lexer.ConstraintsParsing = false;
2867 current_delegate.SetParameterInfo ((ArrayList) $10);
2868 $$ = current_delegate;
2870 current_delegate = null;
2877 lexer.CheckNullable (false);
2882 // FIXME: A hack with parsing conditional operator as nullable type
2883 //if (RootContext.Version < LanguageVersion.ISO_2)
2884 // Report.FeatureIsNotAvailable (lexer.Location, "nullable types");
2886 lexer.CheckNullable (true);
2891 namespace_or_type_name
2892 : IDENTIFIER opt_type_argument_list
2894 LocatedToken lt = (LocatedToken) $1;
2895 $$ = new MemberName (lt.Value, (TypeArguments) $2, lt.Location);
2897 | IDENTIFIER DOUBLE_COLON IDENTIFIER opt_type_argument_list {
2898 LocatedToken lt1 = (LocatedToken) $1;
2899 LocatedToken lt2 = (LocatedToken) $3;
2900 if (RootContext.Version == LanguageVersion.ISO_1)
2901 Report.FeatureIsNotAvailable (lt1.Location, "namespace alias qualifier");
2903 $$ = new MemberName (lt1.Value, lt2.Value, (TypeArguments) $4, lt1.Location);
2905 | namespace_or_type_name DOT IDENTIFIER opt_type_argument_list {
2906 LocatedToken lt = (LocatedToken) $3;
2907 $$ = new MemberName ((MemberName) $1, lt.Value, (TypeArguments) $4, lt.Location);
2912 : IDENTIFIER opt_type_parameter_list
2914 LocatedToken lt = (LocatedToken) $1;
2915 $$ = new MemberName (lt.Value, (TypeArguments) $2, lt.Location);
2917 | namespace_or_type_name DOT IDENTIFIER opt_type_parameter_list
2919 LocatedToken lt = (LocatedToken) $3;
2920 $$ = new MemberName ((MemberName) $1, lt.Value, (TypeArguments) $4, lt.Location);
2925 : IDENTIFIER opt_type_parameter_list
2927 LocatedToken lt = (LocatedToken) $1;
2928 $$ = new MemberName (lt.Value, (TypeArguments)$2, lt.Location);
2933 // Generics arguments (any type, without attributes)
2936 opt_type_argument_list
2937 : /* empty */ { $$ = null; }
2938 | OP_GENERICS_LT type_arguments OP_GENERICS_GT
2940 if (RootContext.Version < LanguageVersion.ISO_2)
2941 Report.FeatureIsNotAvailable (GetLocation ($1), "generics");
2948 // Generics parameters (identifiers only, with attributes), used in type, method declarations
2951 opt_type_parameter_list
2952 : /* empty */ { $$ = null; }
2953 | OP_GENERICS_LT type_arguments OP_GENERICS_GT
2955 if (RootContext.Version < LanguageVersion.ISO_2)
2956 Report.FeatureIsNotAvailable (GetLocation ($1), "generics");
2965 TypeArguments type_args = new TypeArguments (lexer.Location);
2966 type_args.Add ((Expression) $1);
2969 | type_arguments COMMA type_argument
2971 TypeArguments type_args = (TypeArguments) $1;
2972 type_args.Add ((Expression) $3);
2982 | attribute_sections type
2984 SimpleName sn = $2 as SimpleName;
2986 Error_TypeExpected (GetLocation ($2));
2988 $2 = new TypeParameterName (sn.Name, (Attributes) $1, lexer.Location);
2994 * Before you think of adding a return_type, notice that we have been
2995 * using two rules in the places where it matters (one rule using type
2996 * and another identical one that uses VOID as the return type). This
2997 * gets rid of a shift/reduce couple
3000 : namespace_or_type_name opt_nullable
3002 MemberName name = (MemberName) $1;
3005 $$ = new ComposedCast (name.GetTypeExpression (), "?", lexer.Location);
3007 if (RootContext.Version > LanguageVersion.ISO_2 && name.Left == null && name.Name == "var")
3008 $$ = new VarExpr (name.Location);
3010 $$ = name.GetTypeExpression ();
3013 | builtin_types opt_nullable
3016 $$ = new ComposedCast ((FullNamedExpression) $1, "?", lexer.Location);
3026 // Note that here only unmanaged types are allowed but we
3027 // can't perform checks during this phase - we do it during
3028 // semantic analysis.
3030 $$ = new ComposedCast ((FullNamedExpression) $1, "*", Lexer.Location);
3034 $$ = new ComposedCast (TypeManager.system_void_expr, "*", (Location) $1);
3039 : builtin_types opt_nullable
3042 $$ = new ComposedCast ((FullNamedExpression) $1, "?", lexer.Location);
3044 | non_expression_type rank_specifier
3046 Location loc = GetLocation ($1);
3048 loc = lexer.Location;
3049 $$ = new ComposedCast ((FullNamedExpression) $1, (string) $2, loc);
3051 | non_expression_type STAR
3053 Location loc = GetLocation ($1);
3055 loc = lexer.Location;
3056 $$ = new ComposedCast ((FullNamedExpression) $1, "*", loc);
3060 // We need this because the parser will happily go and reduce IDENTIFIER STAR
3061 // through this different path
3063 | multiplicative_expression STAR
3065 FullNamedExpression e = $1 as FullNamedExpression;
3067 $$ = new ComposedCast (e, "*");
3069 Error_TypeExpected (GetLocation ($1));
3076 ArrayList types = new ArrayList (2);
3080 | type_list COMMA base_type_name
3082 ArrayList types = (ArrayList) $1;
3091 if ($1 is ComposedCast)
3092 Report.Error (1521, GetLocation ($1), "Invalid base type `{0}'", ((ComposedCast)$1).GetSignatureForError ());
3098 * replaces all the productions for isolating the various
3099 * simple types, but we need this to reuse it easily in local_variable_type
3102 : OBJECT { $$ = TypeManager.system_object_expr; }
3103 | STRING { $$ = TypeManager.system_string_expr; }
3104 | BOOL { $$ = TypeManager.system_boolean_expr; }
3105 | DECIMAL { $$ = TypeManager.system_decimal_expr; }
3106 | FLOAT { $$ = TypeManager.system_single_expr; }
3107 | DOUBLE { $$ = TypeManager.system_double_expr; }
3112 : SBYTE { $$ = TypeManager.system_sbyte_expr; }
3113 | BYTE { $$ = TypeManager.system_byte_expr; }
3114 | SHORT { $$ = TypeManager.system_int16_expr; }
3115 | USHORT { $$ = TypeManager.system_uint16_expr; }
3116 | INT { $$ = TypeManager.system_int32_expr; }
3117 | UINT { $$ = TypeManager.system_uint32_expr; }
3118 | LONG { $$ = TypeManager.system_int64_expr; }
3119 | ULONG { $$ = TypeManager.system_uint64_expr; }
3120 | CHAR { $$ = TypeManager.system_char_expr; }
3121 | VOID { $$ = TypeManager.system_void_expr; }
3125 : type rank_specifiers opt_nullable
3127 string rank_specifiers = (string) $2;
3129 rank_specifiers += "?";
3131 $$ = current_array_type = new ComposedCast ((FullNamedExpression) $1, rank_specifiers);
3136 // Expressions, section 7.5
3145 MemberName mn = (MemberName) $1;
3146 $$ = mn.GetTypeExpression ();
3148 | IDENTIFIER DOUBLE_COLON IDENTIFIER opt_type_argument_list
3150 LocatedToken lt1 = (LocatedToken) $1;
3151 LocatedToken lt2 = (LocatedToken) $3;
3152 if (RootContext.Version == LanguageVersion.ISO_1)
3153 Report.FeatureIsNotAvailable (lt1.Location, "namespace alias qualifier");
3155 $$ = new QualifiedAliasMember (lt1.Value, lt2.Value, (TypeArguments) $4, lt1.Location);
3157 | parenthesized_expression
3158 | default_value_expression
3160 | invocation_expression
3164 | post_increment_expression
3165 | post_decrement_expression
3169 | checked_expression
3170 | unchecked_expression
3171 | pointer_member_access
3172 | anonymous_method_expression
3179 | LITERAL_CHARACTER { $$ = new CharLiteral ((char) lexer.Value, lexer.Location); }
3180 | LITERAL_STRING { $$ = new StringLiteral ((string) lexer.Value, lexer.Location); }
3181 | NULL { $$ = new NullLiteral (lexer.Location); }
3185 : LITERAL_FLOAT { $$ = new FloatLiteral ((float) lexer.Value, lexer.Location); }
3186 | LITERAL_DOUBLE { $$ = new DoubleLiteral ((double) lexer.Value, lexer.Location); }
3187 | LITERAL_DECIMAL { $$ = new DecimalLiteral ((decimal) lexer.Value, lexer.Location); }
3192 object v = lexer.Value;
3195 $$ = new IntLiteral ((int) v, lexer.Location);
3196 } else if (v is uint)
3197 $$ = new UIntLiteral ((UInt32) v, lexer.Location);
3199 $$ = new LongLiteral ((Int64) v, lexer.Location);
3200 else if (v is ulong)
3201 $$ = new ULongLiteral ((UInt64) v, lexer.Location);
3203 Console.WriteLine ("OOPS. Unexpected result from scanner");
3208 : TRUE { $$ = new BoolLiteral (true, lexer.Location); }
3209 | FALSE { $$ = new BoolLiteral (false, lexer.Location); }
3212 parenthesized_expression_0
3213 : OPEN_PARENS expression CLOSE_PARENS
3216 lexer.Deambiguate_CloseParens ($$);
3217 // After this, the next token returned is one of
3218 // CLOSE_PARENS_CAST, CLOSE_PARENS_NO_CAST (CLOSE_PARENS), CLOSE_PARENS_OPEN_PARENS
3219 // or CLOSE_PARENS_MINUS.
3221 | OPEN_PARENS expression error { CheckToken (1026, yyToken, "Expecting ')'", lexer.Location); }
3224 parenthesized_expression
3225 : parenthesized_expression_0 CLOSE_PARENS_NO_CAST
3229 | parenthesized_expression_0 CLOSE_PARENS
3233 | parenthesized_expression_0 CLOSE_PARENS_MINUS
3235 // If a parenthesized expression is followed by a minus, we need to wrap
3236 // the expression inside a ParenthesizedExpression for the CS0075 check
3237 // in Binary.DoResolve().
3238 $$ = new ParenthesizedExpression ((Expression) $1);
3243 : primary_expression DOT IDENTIFIER opt_type_argument_list
3245 LocatedToken lt = (LocatedToken) $3;
3246 $$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
3248 | predefined_type DOT IDENTIFIER opt_type_argument_list
3250 LocatedToken lt = (LocatedToken) $3;
3251 // TODO: Location is wrong as some predefined types doesn't hold a location
3252 $$ = new MemberAccess ((Expression) $1, lt.Value, (TypeArguments) $4, lt.Location);
3260 invocation_expression
3261 : primary_expression OPEN_PARENS opt_argument_list CLOSE_PARENS
3264 Report.Error (1, (Location) $2, "Parse error");
3266 $$ = new Invocation ((Expression) $1, (ArrayList) $3);
3268 | parenthesized_expression_0 CLOSE_PARENS_OPEN_PARENS OPEN_PARENS CLOSE_PARENS
3270 $$ = new Invocation ((Expression) $1, new ArrayList ());
3272 | parenthesized_expression_0 CLOSE_PARENS_OPEN_PARENS primary_expression
3274 $$ = new InvocationOrCast ((Expression) $1, (Expression) $3);
3276 | parenthesized_expression_0 CLOSE_PARENS_OPEN_PARENS OPEN_PARENS non_simple_argument CLOSE_PARENS
3278 ArrayList args = new ArrayList (1);
3280 $$ = new Invocation ((Expression) $1, args);
3282 | parenthesized_expression_0 CLOSE_PARENS_OPEN_PARENS OPEN_PARENS argument_list COMMA argument CLOSE_PARENS
3284 ArrayList args = ((ArrayList) $4);
3286 $$ = new Invocation ((Expression) $1, args);
3290 opt_object_or_collection_initializer
3291 : /* empty */ { $$ = null; }
3292 | object_or_collection_initializer
3295 object_or_collection_initializer
3296 : OPEN_BRACE opt_member_initializer_list CLOSE_BRACE
3299 $$ = CollectionOrObjectInitializers.Empty;
3301 $$ = new CollectionOrObjectInitializers ((ArrayList) $2, GetLocation ($1));
3303 | OPEN_BRACE member_initializer_list COMMA CLOSE_BRACE
3305 $$ = new CollectionOrObjectInitializers ((ArrayList) $2, GetLocation ($1));
3309 opt_member_initializer_list
3310 : /* empty */ { $$ = null; }
3311 | member_initializer_list
3317 member_initializer_list
3318 : member_initializer
3320 ArrayList a = new ArrayList ();
3324 | member_initializer_list COMMA member_initializer
3326 ArrayList a = (ArrayList)$1;
3333 : IDENTIFIER ASSIGN initializer_value
3335 LocatedToken lt = $1 as LocatedToken;
3336 $$ = new ElementInitializer (lt.Value, (Expression)$3, lt.Location);
3338 | non_assignment_expression
3340 $$ = new CollectionElementInitializer ((Expression)$1);
3342 | OPEN_BRACE expression_list CLOSE_BRACE
3344 $$ = new CollectionElementInitializer ((ArrayList)$2, GetLocation ($1));
3346 | OPEN_BRACE CLOSE_BRACE
3348 Report.Error (1920, GetLocation ($1), "An element initializer cannot be empty");
3354 | object_or_collection_initializer
3358 : /* empty */ { $$ = null; }
3365 ArrayList list = new ArrayList (4);
3369 | argument_list COMMA argument
3371 ArrayList list = (ArrayList) $1;
3375 | argument_list error {
3376 CheckToken (1026, yyToken, "Expected `,' or `)'", GetLocation ($2));
3384 $$ = new Argument ((Expression) $1, Argument.AType.Expression);
3386 | non_simple_argument
3393 : REF variable_reference
3395 $$ = new Argument ((Expression) $2, Argument.AType.Ref);
3397 | OUT variable_reference
3399 $$ = new Argument ((Expression) $2, Argument.AType.Out);
3401 | ARGLIST OPEN_PARENS argument_list CLOSE_PARENS
3403 ArrayList list = (ArrayList) $3;
3404 Argument[] args = new Argument [list.Count];
3405 list.CopyTo (args, 0);
3407 Expression expr = new Arglist (args, (Location) $1);
3408 $$ = new Argument (expr, Argument.AType.Expression);
3410 | ARGLIST OPEN_PARENS CLOSE_PARENS
3412 $$ = new Argument (new Arglist ((Location) $1), Argument.AType.Expression);
3416 $$ = new Argument (new ArglistAccess ((Location) $1), Argument.AType.ArgList);
3421 : expression { note ("section 5.4"); $$ = $1; }
3425 : primary_expression OPEN_BRACKET expression_list CLOSE_BRACKET
3427 $$ = new ElementAccess ((Expression) $1, (ArrayList) $3);
3429 | primary_expression rank_specifiers
3431 // So the super-trick is that primary_expression
3432 // can only be either a SimpleName or a MemberAccess.
3433 // The MemberAccess case arises when you have a fully qualified type-name like :
3435 // SimpleName is when you have
3438 Expression expr = (Expression) $1;
3439 if (expr is ComposedCast){
3440 $$ = new ComposedCast ((ComposedCast)expr, (string) $2);
3441 } else if (expr is ATypeNameExpression){
3443 // So we extract the string corresponding to the SimpleName
3446 $$ = new ComposedCast ((ATypeNameExpression)expr, (string) $2);
3448 Error_ExpectingTypeName (expr);
3449 $$ = TypeManager.system_object_expr;
3452 current_array_type = (FullNamedExpression)$$;
3459 ArrayList list = new ArrayList (4);
3463 | expression_list COMMA expression
3465 ArrayList list = (ArrayList) $1;
3474 $$ = new This (current_block, (Location) $1);
3479 : BASE DOT IDENTIFIER opt_type_argument_list
3481 LocatedToken lt = (LocatedToken) $3;
3482 $$ = new BaseAccess (lt.Value, (TypeArguments) $4, lt.Location);
3484 | BASE OPEN_BRACKET expression_list CLOSE_BRACKET
3486 $$ = new BaseIndexerAccess ((ArrayList) $3, (Location) $1);
3489 Report.Error (175, (Location) $1, "Use of keyword `base' is not valid in this context");
3494 post_increment_expression
3495 : primary_expression OP_INC
3497 $$ = new UnaryMutator (UnaryMutator.Mode.PostIncrement,
3498 (Expression) $1, (Location) $2);
3502 post_decrement_expression
3503 : primary_expression OP_DEC
3505 $$ = new UnaryMutator (UnaryMutator.Mode.PostDecrement,
3506 (Expression) $1, (Location) $2);
3511 : object_or_delegate_creation_expression
3512 | array_creation_expression
3513 | anonymous_type_expression
3516 object_or_delegate_creation_expression
3517 : NEW type OPEN_PARENS opt_argument_list CLOSE_PARENS opt_object_or_collection_initializer
3520 if (RootContext.Version <= LanguageVersion.ISO_2)
3521 Report.FeatureIsNotAvailable (GetLocation ($1), "object initializers");
3523 $$ = new NewInitialize ((Expression) $2, (ArrayList) $4, (CollectionOrObjectInitializers) $6, (Location) $1);
3526 $$ = new New ((Expression) $2, (ArrayList) $4, (Location) $1);
3528 | NEW type object_or_collection_initializer
3530 if (RootContext.Version <= LanguageVersion.ISO_2)
3531 Report.FeatureIsNotAvailable (GetLocation ($1), "collection initializers");
3533 $$ = new NewInitialize ((Expression) $2, null, (CollectionOrObjectInitializers) $3, (Location) $1);
3537 array_creation_expression
3538 : NEW type OPEN_BRACKET expression_list CLOSE_BRACKET
3540 opt_array_initializer
3542 $$ = new ArrayCreation ((FullNamedExpression) $2, (ArrayList) $4, (string) $6, (ArrayList) $7, (Location) $1);
3544 | NEW type rank_specifiers array_initializer
3546 $$ = new ArrayCreation ((FullNamedExpression) $2, (string) $3, (ArrayList) $4, (Location) $1);
3548 | NEW rank_specifiers array_initializer
3550 $$ = new ImplicitlyTypedArrayCreation ((string) $2, (ArrayList) $3, (Location) $1);
3554 Report.Error (1031, (Location) $1, "Type expected");
3559 Report.Error (1526, (Location) $1, "A new expression requires () or [] after type");
3564 anonymous_type_expression
3565 : NEW OPEN_BRACE anonymous_type_parameters_opt_comma CLOSE_BRACE
3567 if (RootContext.Version <= LanguageVersion.ISO_2)
3568 Report.FeatureIsNotAvailable (GetLocation ($1), "anonymous types");
3570 $$ = new AnonymousTypeDeclaration ((ArrayList) $3, current_container, GetLocation ($1));
3574 anonymous_type_parameters_opt_comma
3575 : anonymous_type_parameters_opt
3576 | anonymous_type_parameters COMMA
3579 anonymous_type_parameters_opt
3581 | anonymous_type_parameters
3584 anonymous_type_parameters
3585 : anonymous_type_parameter
3587 ArrayList a = new ArrayList (4);
3591 | anonymous_type_parameters COMMA anonymous_type_parameter
3593 ArrayList a = (ArrayList) $1;
3599 anonymous_type_parameter
3600 : IDENTIFIER ASSIGN variable_initializer
3602 LocatedToken lt = (LocatedToken)$1;
3603 $$ = new AnonymousTypeParameter ((Expression)$3, lt.Value, lt.Location);
3607 LocatedToken lt = (LocatedToken)$1;
3608 $$ = new AnonymousTypeParameter (new SimpleName (lt.Value, lt.Location),
3609 lt.Value, lt.Location);
3613 MemberAccess ma = (MemberAccess) $1;
3614 $$ = new AnonymousTypeParameter (ma, ma.Name, ma.Location);
3618 Report.Error (746, lexer.Location, "Invalid anonymous type member declarator. " +
3619 "Anonymous type members must be a member assignment, simple name or member access expression");
3634 opt_rank_specifier_or_nullable
3643 | opt_nullable rank_specifiers
3650 | opt_nullable rank_specifiers INTERR
3653 $$ = "?" + $2 + "?";
3660 : rank_specifier opt_rank_specifier
3662 $$ = (string) $2 + (string) $1;
3667 : OPEN_BRACKET opt_dim_separators CLOSE_BRACKET
3669 $$ = "[" + (string) $2 + "]";
3689 | dim_separators COMMA
3691 $$ = (string) $1 + ",";
3695 opt_array_initializer
3707 : OPEN_BRACE CLOSE_BRACE
3709 ArrayList list = new ArrayList (4);
3712 | OPEN_BRACE variable_initializer_list opt_comma CLOSE_BRACE
3714 $$ = (ArrayList) $2;
3718 variable_initializer_list
3719 : variable_initializer
3721 ArrayList list = new ArrayList (4);
3725 | variable_initializer_list COMMA variable_initializer
3727 ArrayList list = (ArrayList) $1;
3736 pushed_current_array_type = current_array_type;
3737 lexer.TypeOfParsing = true;
3739 OPEN_PARENS typeof_type_expression CLOSE_PARENS
3741 lexer.TypeOfParsing = false;
3742 Expression type = (Expression)$4;
3743 if (type == TypeManager.system_void_expr)
3744 $$ = new TypeOfVoid ((Location) $1);
3746 $$ = new TypeOf (type, (Location) $1);
3747 current_array_type = pushed_current_array_type;
3751 typeof_type_expression
3758 $$ = new UnboundTypeExpression ((MemberName)$1, lexer.Location);
3763 : IDENTIFIER GENERIC_DIMENSION
3765 if (RootContext.Version < LanguageVersion.ISO_2)
3766 Report.FeatureIsNotAvailable (lexer.Location, "generics");
3768 LocatedToken lt = (LocatedToken) $1;
3769 TypeArguments ta = new TypeArguments ((int)$2, lt.Location);
3771 $$ = new MemberName (lt.Value, ta, lt.Location);
3773 | IDENTIFIER DOUBLE_COLON IDENTIFIER GENERIC_DIMENSION
3775 LocatedToken lt = (LocatedToken) $1;
3776 MemberName left = new MemberName (lt.Value, lt.Location);
3777 lt = (LocatedToken) $3;
3778 TypeArguments ta = new TypeArguments ((int)$4, lt.Location);
3780 if (RootContext.Version == LanguageVersion.ISO_1)
3781 Report.FeatureIsNotAvailable (lt.Location, "namespace alias qualifier");
3783 $$ = new MemberName (left, lt.Value, ta, lt.Location);
3785 | unbound_type_name DOT IDENTIFIER GENERIC_DIMENSION
3787 LocatedToken lt = (LocatedToken) $3;
3788 TypeArguments ta = new TypeArguments ((int)$4, lt.Location);
3790 $$ = new MemberName ((MemberName)$1, lt.Value, ta, lt.Location);
3792 | namespace_or_type_name DOT IDENTIFIER GENERIC_DIMENSION
3794 LocatedToken lt = (LocatedToken) $3;
3795 TypeArguments ta = new TypeArguments ((int)$4, lt.Location);
3797 $$ = new MemberName ((MemberName)$1, lt.Value, ta, lt.Location);
3803 : SIZEOF OPEN_PARENS type CLOSE_PARENS {
3804 $$ = new SizeOf ((Expression) $3, (Location) $1);
3809 : CHECKED OPEN_PARENS expression CLOSE_PARENS
3811 $$ = new CheckedExpr ((Expression) $3, (Location) $1);
3815 unchecked_expression
3816 : UNCHECKED OPEN_PARENS expression CLOSE_PARENS
3818 $$ = new UnCheckedExpr ((Expression) $3, (Location) $1);
3822 pointer_member_access
3823 : primary_expression OP_PTR IDENTIFIER
3826 LocatedToken lt = (LocatedToken) $3;
3828 deref = new Indirection ((Expression) $1, lt.Location);
3829 $$ = new MemberAccess (deref, lt.Value);
3833 anonymous_method_expression
3834 : DELEGATE opt_anonymous_method_signature
3836 start_anonymous (false, (Parameters) $2, (Location) $1);
3840 $$ = end_anonymous ((ToplevelBlock) $4, (Location) $1);
3844 opt_anonymous_method_signature
3845 : /* empty */ { $$ = null; }
3846 | anonymous_method_signature
3849 anonymous_method_signature
3852 params_modifiers_not_allowed = true;
3854 opt_formal_parameter_list CLOSE_PARENS
3856 params_modifiers_not_allowed = false;
3861 default_value_expression
3862 : DEFAULT_OPEN_PARENS type CLOSE_PARENS
3864 if (RootContext.Version < LanguageVersion.ISO_2)
3865 Report.FeatureIsNotAvailable (lexer.Location, "default value expression");
3867 $$ = new DefaultValueExpression ((Expression) $2, lexer.Location);
3872 : primary_expression
3873 | BANG prefixed_unary_expression
3875 $$ = new Unary (Unary.Operator.LogicalNot, (Expression) $2, (Location) $1);
3877 | TILDE prefixed_unary_expression
3879 $$ = new Unary (Unary.Operator.OnesComplement, (Expression) $2, (Location) $1);
3885 : parenthesized_expression_0 CLOSE_PARENS_CAST unary_expression
3887 $$ = new Cast ((Expression) $1, (Expression) $3);
3889 | parenthesized_expression_0 CLOSE_PARENS_NO_CAST default_value_expression
3891 $$ = new Cast ((Expression) $1, (Expression) $3);
3893 | parenthesized_expression_0 CLOSE_PARENS_OPEN_PARENS cast_expression
3895 $$ = new Cast ((Expression) $1, (Expression) $3);
3901 | OPEN_PARENS non_expression_type CLOSE_PARENS prefixed_unary_expression
3903 // TODO: wrong location
3904 $$ = new Cast ((Expression) $2, (Expression) $4, lexer.Location);
3909 // The idea to split this out is from Rhys' grammar
3910 // to solve the problem with casts.
3912 prefixed_unary_expression
3914 | PLUS prefixed_unary_expression
3916 $$ = new Unary (Unary.Operator.UnaryPlus, (Expression) $2, (Location) $1);
3918 | MINUS prefixed_unary_expression
3920 $$ = new Unary (Unary.Operator.UnaryNegation, (Expression) $2, (Location) $1);
3922 | OP_INC prefixed_unary_expression
3924 $$ = new UnaryMutator (UnaryMutator.Mode.PreIncrement,
3925 (Expression) $2, (Location) $1);
3927 | OP_DEC prefixed_unary_expression
3929 $$ = new UnaryMutator (UnaryMutator.Mode.PreDecrement,
3930 (Expression) $2, (Location) $1);
3932 | STAR prefixed_unary_expression
3934 $$ = new Indirection ((Expression) $2, (Location) $1);
3936 | BITWISE_AND prefixed_unary_expression
3938 $$ = new Unary (Unary.Operator.AddressOf, (Expression) $2, (Location) $1);
3942 multiplicative_expression
3943 : prefixed_unary_expression
3944 | multiplicative_expression STAR prefixed_unary_expression
3946 $$ = new Binary (Binary.Operator.Multiply,
3947 (Expression) $1, (Expression) $3);
3949 | multiplicative_expression DIV prefixed_unary_expression
3951 $$ = new Binary (Binary.Operator.Division,
3952 (Expression) $1, (Expression) $3);
3954 | multiplicative_expression PERCENT prefixed_unary_expression
3956 $$ = new Binary (Binary.Operator.Modulus,
3957 (Expression) $1, (Expression) $3);
3962 : multiplicative_expression
3963 | additive_expression PLUS multiplicative_expression
3965 $$ = new Binary (Binary.Operator.Addition,
3966 (Expression) $1, (Expression) $3);
3968 | additive_expression MINUS multiplicative_expression
3970 $$ = new Binary (Binary.Operator.Subtraction,
3971 (Expression) $1, (Expression) $3);
3976 : additive_expression
3977 | shift_expression OP_SHIFT_LEFT additive_expression
3979 $$ = new Binary (Binary.Operator.LeftShift,
3980 (Expression) $1, (Expression) $3);
3982 | shift_expression OP_SHIFT_RIGHT additive_expression
3984 $$ = new Binary (Binary.Operator.RightShift,
3985 (Expression) $1, (Expression) $3);
3996 lexer.PutbackNullable ();
4001 nullable_type_or_conditional
4004 if (((bool) $2) && ($1 is ComposedCast))
4005 $$ = ((ComposedCast) $1).RemoveNullable ();
4011 relational_expression
4013 | relational_expression OP_LT shift_expression
4015 $$ = new Binary (Binary.Operator.LessThan,
4016 (Expression) $1, (Expression) $3);
4018 | relational_expression OP_GT shift_expression
4020 $$ = new Binary (Binary.Operator.GreaterThan,
4021 (Expression) $1, (Expression) $3);
4023 | relational_expression OP_LE shift_expression
4025 $$ = new Binary (Binary.Operator.LessThanOrEqual,
4026 (Expression) $1, (Expression) $3);
4028 | relational_expression OP_GE shift_expression
4030 $$ = new Binary (Binary.Operator.GreaterThanOrEqual,
4031 (Expression) $1, (Expression) $3);
4033 | relational_expression IS
4036 } nullable_type_or_conditional
4038 $$ = new Is ((Expression) $1, (Expression) $4, (Location) $2);
4040 | relational_expression AS
4043 } nullable_type_or_conditional
4045 $$ = new As ((Expression) $1, (Expression) $4, (Location) $2);
4050 : relational_expression
4051 | equality_expression OP_EQ relational_expression
4053 $$ = new Binary (Binary.Operator.Equality,
4054 (Expression) $1, (Expression) $3);
4056 | equality_expression OP_NE relational_expression
4058 $$ = new Binary (Binary.Operator.Inequality,
4059 (Expression) $1, (Expression) $3);
4064 : equality_expression
4065 | and_expression BITWISE_AND equality_expression
4067 $$ = new Binary (Binary.Operator.BitwiseAnd,
4068 (Expression) $1, (Expression) $3);
4072 exclusive_or_expression
4074 | exclusive_or_expression CARRET and_expression
4076 $$ = new Binary (Binary.Operator.ExclusiveOr,
4077 (Expression) $1, (Expression) $3);
4081 inclusive_or_expression
4082 : exclusive_or_expression
4083 | inclusive_or_expression BITWISE_OR exclusive_or_expression
4085 $$ = new Binary (Binary.Operator.BitwiseOr,
4086 (Expression) $1, (Expression) $3);
4090 conditional_and_expression
4091 : inclusive_or_expression
4092 | conditional_and_expression OP_AND inclusive_or_expression
4094 $$ = new Binary (Binary.Operator.LogicalAnd,
4095 (Expression) $1, (Expression) $3);
4099 conditional_or_expression
4100 : conditional_and_expression
4101 | conditional_or_expression OP_OR conditional_and_expression
4103 $$ = new Binary (Binary.Operator.LogicalOr,
4104 (Expression) $1, (Expression) $3);
4108 conditional_expression
4109 : conditional_or_expression
4110 | conditional_or_expression INTERR expression COLON expression
4112 $$ = new Conditional ((Expression) $1, (Expression) $3, (Expression) $5);
4114 | conditional_or_expression OP_COALESCING expression
4116 if (RootContext.Version < LanguageVersion.ISO_2)
4117 Report.FeatureIsNotAvailable (GetLocation ($2), "null coalescing operator");
4119 $$ = new Nullable.NullCoalescingOperator ((Expression) $1, (Expression) $3, lexer.Location);
4121 // We'll be resolved into a `parenthesized_expression_0' later on.
4122 | conditional_or_expression INTERR CLOSE_PARENS
4124 $$ = new ComposedCast ((FullNamedExpression) $1, "?", lexer.Location);
4125 lexer.PutbackCloseParens ();
4129 assignment_expression
4130 : prefixed_unary_expression ASSIGN expression
4132 $$ = new SimpleAssign ((Expression) $1, (Expression) $3);
4134 | prefixed_unary_expression OP_MULT_ASSIGN expression
4136 $$ = new CompoundAssign (
4137 Binary.Operator.Multiply, (Expression) $1, (Expression) $3);
4139 | prefixed_unary_expression OP_DIV_ASSIGN expression
4141 $$ = new CompoundAssign (
4142 Binary.Operator.Division, (Expression) $1, (Expression) $3);
4144 | prefixed_unary_expression OP_MOD_ASSIGN expression
4146 $$ = new CompoundAssign (
4147 Binary.Operator.Modulus, (Expression) $1, (Expression) $3);
4149 | prefixed_unary_expression OP_ADD_ASSIGN expression
4151 $$ = new CompoundAssign (
4152 Binary.Operator.Addition, (Expression) $1, (Expression) $3);
4154 | prefixed_unary_expression OP_SUB_ASSIGN expression
4156 $$ = new CompoundAssign (
4157 Binary.Operator.Subtraction, (Expression) $1, (Expression) $3);
4159 | prefixed_unary_expression OP_SHIFT_LEFT_ASSIGN expression
4161 $$ = new CompoundAssign (
4162 Binary.Operator.LeftShift, (Expression) $1, (Expression) $3);
4164 | prefixed_unary_expression OP_SHIFT_RIGHT_ASSIGN expression
4166 $$ = new CompoundAssign (
4167 Binary.Operator.RightShift, (Expression) $1, (Expression) $3);
4169 | prefixed_unary_expression OP_AND_ASSIGN expression
4171 $$ = new CompoundAssign (
4172 Binary.Operator.BitwiseAnd, (Expression) $1, (Expression) $3);
4174 | prefixed_unary_expression OP_OR_ASSIGN expression
4176 $$ = new CompoundAssign (
4177 Binary.Operator.BitwiseOr, (Expression) $1, (Expression) $3);
4179 | prefixed_unary_expression OP_XOR_ASSIGN expression
4181 $$ = new CompoundAssign (
4182 Binary.Operator.ExclusiveOr, (Expression) $1, (Expression) $3);
4186 lambda_parameter_list
4189 ArrayList pars = new ArrayList (4);
4194 | lambda_parameter_list COMMA lambda_parameter
4196 ArrayList pars = (ArrayList) $1;
4197 Parameter p = (Parameter)$3;
4198 if (pars[0].GetType () != p.GetType ()) {
4199 Report.Error (748, p.Location, "All lambda parameters must be typed either explicitly or implicitly");
4208 : parameter_modifier type IDENTIFIER
4210 LocatedToken lt = (LocatedToken) $3;
4212 $$ = new Parameter ((FullNamedExpression) $2, lt.Value, (Parameter.Modifier) $1, null, lt.Location);
4216 LocatedToken lt = (LocatedToken) $2;
4218 $$ = new Parameter ((FullNamedExpression) $1, lt.Value, Parameter.Modifier.NONE, null, lt.Location);
4222 LocatedToken lt = (LocatedToken) $1;
4223 $$ = new ImplicitLambdaParameter (lt.Value, lt.Location);
4227 opt_lambda_parameter_list
4228 : /* empty */ { $$ = Parameters.EmptyReadOnlyParameters; }
4229 | lambda_parameter_list {
4230 ArrayList pars_list = (ArrayList) $1;
4231 $$ = new Parameters ((Parameter[])pars_list.ToArray (typeof (Parameter)));
4235 lambda_expression_body
4237 start_block (lexer.Location);
4241 Block b = end_block (lexer.Location);
4242 b.AddStatement (new ContextualReturn ((Expression) $2));
4253 LocatedToken lt = (LocatedToken) $1;
4254 Parameter p = new ImplicitLambdaParameter (lt.Value, lt.Location);
4255 start_anonymous (true, new Parameters (p), (Location) $2);
4257 lambda_expression_body
4259 $$ = end_anonymous ((ToplevelBlock) $4, (Location) $2);
4261 | OPEN_PARENS_LAMBDA opt_lambda_parameter_list CLOSE_PARENS ARROW
4263 start_anonymous (true, (Parameters) $2, (Location) $4);
4265 lambda_expression_body
4267 $$ = end_anonymous ((ToplevelBlock) $6, (Location) $4);
4272 : assignment_expression
4273 | non_assignment_expression
4276 non_assignment_expression
4277 : conditional_expression
4299 lexer.ConstraintsParsing = true;
4303 MemberName name = MakeName ((MemberName) $6);
4304 push_current_class (new Class (current_namespace, current_class, name, (int) $2, (Attributes) $1), $3);
4307 opt_type_parameter_constraints_clauses
4309 lexer.ConstraintsParsing = false;
4311 current_class.SetParameterInfo ((ArrayList) $9);
4313 if (RootContext.Documentation != null) {
4314 current_container.DocComment = Lexer.consume_doc_comment ();
4315 Lexer.doc_state = XmlCommentState.Allowed;
4320 if (RootContext.Documentation != null)
4321 Lexer.doc_state = XmlCommentState.Allowed;
4325 $$ = pop_current_class ();
4333 { $$ = $1; } // location
4337 : /* empty */ { $$ = (int) 0; }
4343 | modifiers modifier
4348 if ((m1 & m2) != 0) {
4349 Location l = lexer.Location;
4350 Report.Error (1004, l, "Duplicate `{0}' modifier", Modifiers.Name (m2));
4352 $$ = (int) (m1 | m2);
4357 : NEW { $$ = Modifiers.NEW; }
4358 | PUBLIC { $$ = Modifiers.PUBLIC; }
4359 | PROTECTED { $$ = Modifiers.PROTECTED; }
4360 | INTERNAL { $$ = Modifiers.INTERNAL; }
4361 | PRIVATE { $$ = Modifiers.PRIVATE; }
4362 | ABSTRACT { $$ = Modifiers.ABSTRACT; }
4363 | SEALED { $$ = Modifiers.SEALED; }
4364 | STATIC { $$ = Modifiers.STATIC; }
4365 | READONLY { $$ = Modifiers.READONLY; }
4366 | VIRTUAL { $$ = Modifiers.VIRTUAL; }
4367 | OVERRIDE { $$ = Modifiers.OVERRIDE; }
4368 | EXTERN { $$ = Modifiers.EXTERN; }
4369 | VOLATILE { $$ = Modifiers.VOLATILE; }
4370 | UNSAFE { $$ = Modifiers.UNSAFE; }
4379 : COLON type_list { current_container.AddBasesForPart (current_class, (ArrayList) $2); }
4382 opt_type_parameter_constraints_clauses
4383 : /* empty */ { $$ = null; }
4384 | type_parameter_constraints_clauses
4388 type_parameter_constraints_clauses
4389 : type_parameter_constraints_clause {
4390 ArrayList constraints = new ArrayList (1);
4391 constraints.Add ($1);
4394 | type_parameter_constraints_clauses type_parameter_constraints_clause {
4395 ArrayList constraints = (ArrayList) $1;
4396 Constraints new_constraint = (Constraints)$2;
4398 foreach (Constraints c in constraints) {
4399 if (new_constraint.TypeParameter == c.TypeParameter) {
4400 Report.Error (409, new_constraint.Location, "A constraint clause has already been specified for type parameter `{0}'",
4401 new_constraint.TypeParameter);
4405 constraints.Add (new_constraint);
4410 type_parameter_constraints_clause
4411 : WHERE IDENTIFIER COLON type_parameter_constraints {
4412 LocatedToken lt = (LocatedToken) $2;
4413 $$ = new Constraints (lt.Value, (ArrayList) $4, lt.Location);
4417 type_parameter_constraints
4418 : type_parameter_constraint {
4419 ArrayList constraints = new ArrayList (1);
4420 constraints.Add ($1);
4423 | type_parameter_constraints COMMA type_parameter_constraint {
4424 ArrayList constraints = (ArrayList) $1;
4426 constraints.Add ($3);
4431 type_parameter_constraint
4433 | NEW OPEN_PARENS CLOSE_PARENS {
4434 $$ = SpecialConstraint.Constructor;
4437 $$ = SpecialConstraint.ReferenceType;
4440 $$ = SpecialConstraint.ValueType;
4449 // A block is "contained" on the following places:
4451 // property_declaration as part of the accessor body (get/set)
4452 // operator_declaration
4453 // constructor_declaration
4454 // destructor_declaration
4455 // event_declaration as part of add_accessor_declaration or remove_accessor_declaration
4460 ++lexer.parsing_block;
4461 start_block ((Location) $1);
4463 opt_statement_list CLOSE_BRACE
4465 --lexer.parsing_block;
4466 $$ = end_block ((Location) $4);
4473 ++lexer.parsing_block;
4475 opt_statement_list CLOSE_BRACE
4477 --lexer.parsing_block;
4478 $$ = end_block ((Location) $4);
4489 | statement_list statement
4493 : declaration_statement
4495 if ($1 != null && (Block) $1 != current_block){
4496 current_block.AddStatement ((Statement) $1);
4497 current_block = (Block) $1;
4500 | valid_declaration_statement
4502 current_block.AddStatement ((Statement) $1);
4507 valid_declaration_statement
4510 | expression_statement
4511 | selection_statement
4512 | iteration_statement
4516 | unchecked_statement
4524 : valid_declaration_statement
4525 | declaration_statement
4527 Report.Error (1023, GetLocation ($1), "An embedded statement may not be a declaration or labeled statement");
4532 Report.Error (1023, GetLocation ($1), "An embedded statement may not be a declaration or labeled statement");
4540 $$ = EmptyStatement.Value;
4547 LocatedToken lt = (LocatedToken) $1;
4548 LabeledStatement labeled = new LabeledStatement (lt.Value, lt.Location);
4550 if (current_block.AddLabel (labeled))
4551 current_block.AddStatement (labeled);
4556 declaration_statement
4557 : local_variable_declaration SEMICOLON
4559 current_array_type = null;
4561 DictionaryEntry de = (DictionaryEntry) $1;
4562 Expression e = (Expression) de.Key;
4564 $$ = declare_local_variables (e, (ArrayList) de.Value, e.Location);
4568 | local_constant_declaration SEMICOLON
4570 current_array_type = null;
4572 DictionaryEntry de = (DictionaryEntry) $1;
4574 $$ = declare_local_constants ((Expression) de.Key, (ArrayList) de.Value);
4580 * The following is from Rhys' grammar:
4581 * > Types in local variable declarations must be recognized as
4582 * > expressions to prevent reduce/reduce errors in the grammar.
4583 * > The expressions are converted into types during semantic analysis.
4586 : primary_expression opt_rank_specifier_or_nullable
4588 // FIXME: Do something smart here regarding the composition of the type.
4590 // Ok, the above "primary_expression" is there to get rid of
4591 // both reduce/reduce and shift/reduces in the grammar, it should
4592 // really just be "type_name". If you use type_name, a reduce/reduce
4593 // creeps up. If you use namespace_or_type_name (which is all we need
4594 // really) two shift/reduces appear.
4597 // So the super-trick is that primary_expression
4598 // can only be either a SimpleName or a MemberAccess.
4599 // The MemberAccess case arises when you have a fully qualified type-name like :
4601 // SimpleName is when you have
4604 Expression expr = (Expression) $1;
4605 if (expr is ComposedCast){
4606 $$ = new ComposedCast ((ComposedCast)expr, (string) $2);
4607 } else if (expr is ATypeNameExpression){
4609 // So we extract the string corresponding to the SimpleName
4613 if ((string) $2 == "") {
4614 SimpleName sn = expr as SimpleName;
4615 if (sn != null && RootContext.Version > LanguageVersion.ISO_2 && sn.Name == "var")
4616 $$ = new VarExpr (sn.Location);
4620 $$ = new ComposedCast ((ATypeNameExpression)expr, (string) $2);
4623 Error_ExpectingTypeName (expr);
4624 $$ = TypeManager.system_object_expr;
4627 | builtin_types opt_rank_specifier_or_nullable
4629 if ((string) $2 == "")
4632 $$ = current_array_type = new ComposedCast ((FullNamedExpression) $1, (string) $2, lexer.Location);
4636 local_variable_pointer_type
4637 : primary_expression STAR
4639 ATypeNameExpression expr = $1 as ATypeNameExpression;
4642 $$ = new ComposedCast (expr, "*");
4644 Error_ExpectingTypeName ((Expression)$1);
4648 | builtin_types STAR
4650 $$ = new ComposedCast ((FullNamedExpression) $1, "*", lexer.Location);
4654 $$ = new ComposedCast (TypeManager.system_void_expr, "*", (Location) $1);
4656 | local_variable_pointer_type STAR
4658 $$ = new ComposedCast ((FullNamedExpression) $1, "*");
4662 local_variable_declaration
4663 : local_variable_type variable_declarators
4666 VarExpr ve = $1 as VarExpr;
4668 ve.VariableInitializer = (ArrayList)$2;
4670 $$ = new DictionaryEntry ($1, $2);
4674 | local_variable_pointer_type opt_rank_specifier_or_nullable variable_declarators
4679 if ((string) $2 == "")
4680 t = (Expression) $1;
4682 t = new ComposedCast ((FullNamedExpression) $1, (string) $2);
4683 $$ = new DictionaryEntry (t, $3);
4689 local_constant_declaration
4690 : CONST local_variable_type constant_declarators
4693 $$ = new DictionaryEntry ($2, $3);
4699 expression_statement
4700 : statement_expression SEMICOLON { $$ = $1; }
4704 // We have to do the wrapping here and not in the case above,
4705 // because statement_expression is used for example in for_statement
4707 statement_expression
4710 Expression expr = (Expression) $1;
4711 ExpressionStatement s = expr as ExpressionStatement;
4713 expr.Error_InvalidExpressionStatement ();
4716 $$ = new StatementExpression (s);
4720 Report.Error (1002, GetLocation ($1), "Expecting `;'");
4731 : IF OPEN_PARENS boolean_expression CLOSE_PARENS
4734 Location l = (Location) $1;
4736 $$ = new If ((Expression) $3, (Statement) $5, l);
4738 // FIXME: location for warning should be loc property of $5.
4739 if ($5 == EmptyStatement.Value)
4740 Report.Warning (642, 3, l, "Possible mistaken empty statement");
4743 | IF OPEN_PARENS boolean_expression CLOSE_PARENS
4744 embedded_statement ELSE embedded_statement
4746 Location l = (Location) $1;
4748 $$ = new If ((Expression) $3, (Statement) $5, (Statement) $7, l);
4750 // FIXME: location for warning should be loc property of $5 and $7.
4751 if ($5 == EmptyStatement.Value)
4752 Report.Warning (642, 3, l, "Possible mistaken empty statement");
4753 if ($7 == EmptyStatement.Value)
4754 Report.Warning (642, 3, l, "Possible mistaken empty statement");
4759 : SWITCH OPEN_PARENS
4761 if (switch_stack == null)
4762 switch_stack = new Stack (2);
4763 switch_stack.Push (current_block);
4765 expression CLOSE_PARENS
4768 $$ = new Switch ((Expression) $4, (ArrayList) $6, (Location) $1);
4769 current_block = (Block) switch_stack.Pop ();
4785 Report.Warning (1522, 1, lexer.Location, "Empty switch block");
4786 $$ = new ArrayList ();
4794 ArrayList sections = new ArrayList (4);
4799 | switch_sections switch_section
4801 ArrayList sections = (ArrayList) $1;
4811 current_block = current_block.CreateSwitchBlock (lexer.Location);
4815 $$ = new SwitchSection ((ArrayList) $1, current_block.Explicit);
4822 ArrayList labels = new ArrayList (4);
4827 | switch_labels switch_label
4829 ArrayList labels = (ArrayList) ($1);
4837 : CASE constant_expression COLON { $$ = new SwitchLabel ((Expression) $2, (Location) $1); }
4838 | DEFAULT_COLON { $$ = new SwitchLabel (null, (Location) $1); }
4841 1523, GetLocation ($1),
4842 "The keyword case or default must precede code in switch block");
4854 : WHILE OPEN_PARENS boolean_expression CLOSE_PARENS embedded_statement
4856 Location l = (Location) $1;
4857 $$ = new While ((Expression) $3, (Statement) $5, l);
4862 : DO embedded_statement
4863 WHILE OPEN_PARENS boolean_expression CLOSE_PARENS SEMICOLON
4865 Location l = (Location) $1;
4867 $$ = new Do ((Statement) $2, (Expression) $5, l);
4873 opt_for_initializer SEMICOLON
4875 Location l = lexer.Location;
4877 Block assign_block = current_block;
4879 if ($3 is DictionaryEntry){
4880 DictionaryEntry de = (DictionaryEntry) $3;
4882 Expression type = (Expression) de.Key;
4883 ArrayList var_declarators = (ArrayList) de.Value;
4885 foreach (VariableDeclaration decl in var_declarators){
4889 vi = current_block.AddVariable (type, decl.identifier, decl.Location);
4893 Expression expr = decl.expression_or_array_initializer;
4895 LocalVariableReference var;
4896 var = new LocalVariableReference (assign_block, decl.identifier, l);
4899 Assign a = new SimpleAssign (var, expr, decl.Location);
4901 assign_block.AddStatement (new StatementExpression (a));
4905 // Note: the $$ below refers to the value of this code block, not of the LHS non-terminal.
4906 // This can be referred to as $5 below.
4912 opt_for_condition SEMICOLON
4913 opt_for_iterator CLOSE_PARENS
4916 Location l = (Location) $1;
4918 For f = new For ((Statement) $5, (Expression) $6, (Statement) $8, (Statement) $10, l);
4920 current_block.AddStatement (f);
4922 $$ = end_block (lexer.Location);
4927 : /* empty */ { $$ = EmptyStatement.Value; }
4932 : local_variable_declaration
4933 | statement_expression_list
4937 : /* empty */ { $$ = null; }
4938 | boolean_expression
4942 : /* empty */ { $$ = EmptyStatement.Value; }
4947 : statement_expression_list
4950 statement_expression_list
4951 : statement_expression
4953 // CHANGE: was `null'
4954 Statement s = (Statement) $1;
4955 Block b = new Block (current_block, s.loc, lexer.Location);
4960 | statement_expression_list COMMA statement_expression
4962 Block b = (Block) $1;
4964 b.AddStatement ((Statement) $3);
4970 : FOREACH open_parens type IN expression CLOSE_PARENS
4972 Report.Error (230, (Location) $1, "Type and identifier are both required in a foreach statement");
4975 | FOREACH open_parens type IDENTIFIER IN
4976 expression CLOSE_PARENS
4978 start_block (lexer.Location);
4979 Block foreach_block = current_block;
4981 LocatedToken lt = (LocatedToken) $4;
4982 Location l = lt.Location;
4983 LocalInfo vi = foreach_block.AddVariable ((Expression) $3, lt.Value, l);
4985 vi.SetReadOnlyContext (LocalInfo.ReadOnlyContext.Foreach);
4987 // Get a writable reference to this read-only variable.
4989 // Note that the $$ here refers to the value of _this_ code block,
4990 // not the value of the LHS non-terminal. This can be referred to as $8 below.
4991 $$ = new LocalVariableReference (foreach_block, lt.Value, l, vi, false);
4998 LocalVariableReference v = (LocalVariableReference) $8;
4999 Location l = (Location) $1;
5002 Foreach f = new Foreach ((Expression) $3, v, (Expression) $6, (Statement) $9, l);
5003 current_block.AddStatement (f);
5006 $$ = end_block (lexer.Location);
5012 | continue_statement
5022 $$ = new Break ((Location) $1);
5027 : CONTINUE SEMICOLON
5029 $$ = new Continue ((Location) $1);
5034 : GOTO IDENTIFIER SEMICOLON
5036 LocatedToken lt = (LocatedToken) $2;
5037 $$ = new Goto (lt.Value, lt.Location);
5039 | GOTO CASE constant_expression SEMICOLON
5041 $$ = new GotoCase ((Expression) $3, (Location) $1);
5043 | GOTO DEFAULT SEMICOLON
5045 $$ = new GotoDefault ((Location) $1);
5050 : RETURN opt_expression SEMICOLON
5052 $$ = new Return ((Expression) $2, (Location) $1);
5057 : THROW opt_expression SEMICOLON
5059 $$ = new Throw ((Expression) $2, (Location) $1);
5064 : IDENTIFIER RETURN expression SEMICOLON
5066 LocatedToken lt = (LocatedToken) $1;
5067 string s = lt.Value;
5069 Report.Error (1003, lt.Location, "; expected");
5072 if (RootContext.Version == LanguageVersion.ISO_1){
5073 Report.FeatureIsNotAvailable (lt.Location, "yield statement");
5076 if (anonymous_host == null){
5077 Report.Error (204, lt.Location, "yield statement can only be used within a method, operator or property");
5080 anonymous_host.SetYields ();
5081 $$ = new Yield ((Expression) $3, lt.Location);
5084 | IDENTIFIER RETURN SEMICOLON
5086 Report.Error (1627, (Location) $2, "Expression expected after yield return");
5089 | IDENTIFIER BREAK SEMICOLON
5091 LocatedToken lt = (LocatedToken) $1;
5092 string s = lt.Value;
5094 Report.Error (1003, lt.Location, "; expected");
5097 if (RootContext.Version == LanguageVersion.ISO_1){
5098 Report.FeatureIsNotAvailable (lt.Location, "yield statement");
5101 if (anonymous_host == null){
5102 Report.Error (204, lt.Location, "yield statement can only be used within a method, operator or property");
5105 anonymous_host.SetYields ();
5106 $$ = new YieldBreak (lt.Location);
5117 : TRY block catch_clauses
5119 $$ = new TryCatch ((Block) $2, (ArrayList) $3, (Location) $1, false);
5121 | TRY block FINALLY block
5123 $$ = new TryFinally ((Statement) $2, (Block) $4, (Location) $1);
5125 | TRY block catch_clauses FINALLY block
5127 $$ = new TryFinally (new TryCatch ((Block) $2, (ArrayList) $3, (Location) $1, true), (Block) $5, (Location) $1);
5131 Report.Error (1524, (Location) $1, "Expected catch or finally");
5139 ArrayList l = new ArrayList (4);
5144 | catch_clauses catch_clause
5146 ArrayList l = (ArrayList) $1;
5154 : /* empty */ { $$ = null; }
5159 : CATCH opt_catch_args
5161 Expression type = null;
5164 DictionaryEntry cc = (DictionaryEntry) $2;
5165 type = (Expression) cc.Key;
5166 LocatedToken lt = (LocatedToken) cc.Value;
5169 ArrayList one = new ArrayList (4);
5171 one.Add (new VariableDeclaration (lt, null));
5173 start_block (lexer.Location);
5174 current_block = declare_local_variables (type, one, lt.Location);
5178 Expression type = null;
5180 Block var_block = null;
5183 DictionaryEntry cc = (DictionaryEntry) $2;
5184 type = (Expression) cc.Key;
5185 LocatedToken lt = (LocatedToken) cc.Value;
5189 var_block = end_block (lexer.Location);
5193 $$ = new Catch (type, id, (Block) $4, var_block, ((Block) $4).loc);
5198 : /* empty */ { $$ = null; }
5203 : OPEN_PARENS type opt_identifier CLOSE_PARENS
5205 $$ = new DictionaryEntry ($2, $3);
5207 | OPEN_PARENS CLOSE_PARENS
5209 Report.Error (1015, GetLocation ($1), "A type that derives from `System.Exception', `object', or `string' expected");
5216 $$ = new Checked ((Block) $2);
5223 $$ = new Unchecked ((Block) $2);
5230 RootContext.CheckUnsafeOption ((Location) $1);
5232 $$ = new Unsafe ((Block) $3);
5238 type fixed_pointer_declarators
5241 ArrayList list = (ArrayList) $4;
5242 Expression type = (Expression) $3;
5243 Location l = (Location) $1;
5244 int top = list.Count;
5246 start_block (lexer.Location);
5248 for (int i = 0; i < top; i++){
5249 Pair p = (Pair) list [i];
5252 v = current_block.AddVariable (type, (string) p.First, l);
5256 v.SetReadOnlyContext (LocalInfo.ReadOnlyContext.Fixed);
5264 Location l = (Location) $1;
5266 Fixed f = new Fixed ((Expression) $3, (ArrayList) $4, (Statement) $7, l);
5268 current_block.AddStatement (f);
5270 $$ = end_block (lexer.Location);
5274 fixed_pointer_declarators
5275 : fixed_pointer_declarator {
5276 ArrayList declarators = new ArrayList (4);
5278 declarators.Add ($1);
5281 | fixed_pointer_declarators COMMA fixed_pointer_declarator
5283 ArrayList declarators = (ArrayList) $1;
5285 declarators.Add ($3);
5290 fixed_pointer_declarator
5291 : IDENTIFIER ASSIGN expression
5293 LocatedToken lt = (LocatedToken) $1;
5294 // FIXME: keep location
5295 $$ = new Pair (lt.Value, $3);
5299 Report.Error (210, ((LocatedToken) $1).Location, "You must provide an initializer in a fixed or using statement declaration");
5305 : LOCK OPEN_PARENS expression CLOSE_PARENS
5311 $$ = new Lock ((Expression) $3, (Statement) $6, (Location) $1);
5316 : USING open_parens local_variable_declaration CLOSE_PARENS
5318 start_block (lexer.Location);
5319 Block assign_block = current_block;
5321 DictionaryEntry de = (DictionaryEntry) $3;
5322 Location l = (Location) $1;
5324 Expression type = (Expression) de.Key;
5325 ArrayList var_declarators = (ArrayList) de.Value;
5327 Stack vars = new Stack ();
5329 foreach (VariableDeclaration decl in var_declarators) {
5330 LocalInfo vi = current_block.AddVariable (type, decl.identifier, decl.Location);
5333 vi.SetReadOnlyContext (LocalInfo.ReadOnlyContext.Using);
5335 Expression expr = decl.expression_or_array_initializer;
5337 Report.Error (210, l, "You must provide an initializer in a fixed or using statement declaration");
5340 LocalVariableReference var;
5342 // Get a writable reference to this read-only variable.
5343 var = new LocalVariableReference (assign_block, decl.identifier, l, vi, false);
5345 // This is so that it is not a warning on using variables
5348 vars.Push (new DictionaryEntry (var, expr));
5350 // Assign a = new SimpleAssign (var, expr, decl.Location);
5351 // assign_block.AddStatement (new StatementExpression (a));
5354 // Note: the $$ here refers to the value of this code block and not of the LHS non-terminal.
5355 // It can be referred to as $5 below.
5360 Statement stmt = (Statement) $6;
5361 Stack vars = (Stack) $5;
5362 Location l = (Location) $1;
5364 while (vars.Count > 0) {
5365 DictionaryEntry de = (DictionaryEntry) vars.Pop ();
5366 stmt = new Using ((Expression) de.Key, (Expression) de.Value, stmt, l);
5368 current_block.AddStatement (stmt);
5369 $$ = end_block (lexer.Location);
5371 | USING open_parens expression CLOSE_PARENS
5373 start_block (lexer.Location);
5377 current_block.AddStatement (new UsingTemporary ((Expression) $3, (Statement) $6, (Location) $1));
5378 $$ = end_block (lexer.Location);
5388 ++lexer.query_parsing;
5392 if (--lexer.query_parsing == 1)
5393 lexer.query_parsing = 0;
5395 Linq.AQueryClause from = $1 as Linq.AQueryClause;
5397 from.Tail.Next = (Linq.AQueryClause)$3;
5400 current_block.SetEndLocation (lexer.Location);
5401 current_block = current_block.Parent;
5406 : FROM IDENTIFIER IN expression
5408 current_block = new Linq.QueryBlock (current_block, GetLocation ($1));
5409 LocatedToken lt = (LocatedToken) $2;
5411 current_block.AddVariable (Linq.ImplicitQueryParameter.ImplicitType.Instance, lt.Value, lt.Location);
5412 $$ = new Linq.QueryExpression (lt, new Linq.QueryStartClause ((Expression)$4));
5414 | FROM type IDENTIFIER IN expression
5416 current_block = new Linq.QueryBlock (current_block, GetLocation ($1));
5417 LocatedToken lt = (LocatedToken) $3;
5419 Expression type = (Expression)$2;
5420 current_block.AddVariable (type, lt.Value, lt.Location);
5421 $$ = new Linq.QueryExpression (lt, new Linq.Cast (type, (Expression)$5));
5426 : FROM IDENTIFIER IN expression
5428 LocatedToken lt = (LocatedToken) $2;
5430 current_block.AddVariable (Linq.ImplicitQueryParameter.ImplicitType.Instance,
5431 lt.Value, lt.Location);
5433 $$ = new Linq.SelectMany (lt, (Expression)$4);
5435 | FROM type IDENTIFIER IN expression
5437 LocatedToken lt = (LocatedToken) $3;
5439 Expression type = (Expression)$2;
5440 current_block.AddVariable (type, lt.Value, lt.Location);
5441 $$ = new Linq.SelectMany (lt, new Linq.Cast (type, (Expression)$5));
5446 : opt_query_body_clauses select_or_group_clause opt_query_continuation
5448 Linq.AQueryClause head = (Linq.AQueryClause)$2;
5451 head.Next = (Linq.AQueryClause)$3;
5454 Linq.AQueryClause clause = (Linq.AQueryClause)$1;
5455 clause.Tail.Next = head;
5463 select_or_group_clause
5466 $$ = new Linq.Select ((Expression)$2, GetLocation ($1));
5468 | GROUP expression BY expression
5470 $$ = new Linq.GroupBy ((Expression)$2, (Expression)$4, GetLocation ($1));
5474 opt_query_body_clauses
5476 | query_body_clauses
5481 | query_body_clauses query_body_clause
5483 ((Linq.AQueryClause)$1).Tail.Next = (Linq.AQueryClause)$2;
5497 : LET IDENTIFIER ASSIGN expression
5499 LocatedToken lt = (LocatedToken) $2;
5500 current_block.AddVariable (Linq.ImplicitQueryParameter.ImplicitType.Instance,
5501 lt.Value, lt.Location);
5502 $$ = new Linq.Let (lt, (Expression)$4, GetLocation ($1));
5507 : WHERE boolean_expression
5509 $$ = new Linq.Where ((Expression)$2, GetLocation ($1));
5514 : JOIN IDENTIFIER IN expression ON expression EQUALS expression opt_join_into
5516 Location loc = GetLocation ($1);
5517 LocatedToken lt = (LocatedToken) $2;
5518 current_block.AddVariable (Linq.ImplicitQueryParameter.ImplicitType.Instance,
5519 lt.Value, lt.Location);
5522 $$ = new Linq.Join (lt, (Expression)$4, (Expression)$6,
5523 (Expression)$8, loc);
5525 LocatedToken lt_into = (LocatedToken) $9;
5526 $$ = new Linq.GroupJoin (lt, (Expression)$4, (Expression)$6,
5527 (Expression)$8, lt_into, loc);
5530 | JOIN type IDENTIFIER IN expression ON expression EQUALS expression opt_join_into
5532 Location loc = GetLocation ($1);
5533 LocatedToken lt = (LocatedToken) $3;
5534 current_block.AddVariable ((Expression)$2, lt.Value, lt.Location);
5536 Linq.Cast cast = new Linq.Cast ((Expression)$2, (Expression)$5);
5538 $$ = new Linq.Join (lt, cast, (Expression)$7,
5539 (Expression)$9, loc);
5541 LocatedToken lt_into = (LocatedToken) $10;
5542 $$ = new Linq.GroupJoin (lt, cast, (Expression)$7,
5543 (Expression)$9, lt_into, loc);
5565 | order_by COMMA orderings_then_by
5567 ((Linq.AQueryClause)$1).Next = (Linq.AQueryClause)$3;
5577 | orderings_then_by COMMA then_by
5579 ((Linq.AQueryClause)$1).Tail.Next = (Linq.AQueryClause)$3;
5587 $$ = new Linq.OrderByAscending ((Expression)$1);
5589 | expression ASCENDING
5591 $$ = new Linq.OrderByAscending ((Expression)$1);
5593 | expression DESCENDING
5595 $$ = new Linq.OrderByDescending ((Expression)$1);
5602 $$ = new Linq.ThenByAscending ((Expression)$1);
5604 | expression ASCENDING
5606 $$ = new Linq.ThenByAscending ((Expression)$1);
5608 | expression DESCENDING
5610 $$ = new Linq.ThenByDescending ((Expression)$1);
5615 opt_query_continuation
5619 // query continuation block is not linked with query block but with block
5620 // before. This means each query can use same range variable names for
5621 // different identifiers.
5623 current_block.SetEndLocation (GetLocation ($1));
5624 current_block = current_block.Parent;
5625 current_block = new Linq.QueryBlock (current_block, GetLocation ($1));
5627 LocatedToken lt = (LocatedToken) $2;
5628 current_block.AddVariable (Linq.ImplicitQueryParameter.ImplicitType.Instance,
5629 lt.Value, lt.Location);
5633 $$ = new Linq.QueryExpression ((LocatedToken) $2,
5634 (Linq.AQueryClause)$4);
5641 // A class used to pass around variable declarations and constants
5643 public class VariableDeclaration {
5644 public string identifier;
5645 public Expression expression_or_array_initializer;
5646 public Location Location;
5647 public Attributes OptAttributes;
5648 public string DocComment;
5650 public VariableDeclaration (LocatedToken lt, object eoai, Attributes opt_attrs)
5652 this.identifier = lt.Value;
5653 if (eoai is ArrayList) {
5654 this.expression_or_array_initializer = new ArrayCreation (CSharpParser.current_array_type, "", (ArrayList)eoai, lt.Location);
5656 this.expression_or_array_initializer = (Expression)eoai;
5658 this.Location = lt.Location;
5659 this.OptAttributes = opt_attrs;
5662 public VariableDeclaration (LocatedToken lt, object eoai) : this (lt, eoai, null)
5668 // A class used to hold info about an indexer declarator
5670 public class IndexerDeclaration {
5671 public FullNamedExpression type;
5672 public MemberName interface_type;
5673 public Parameters param_list;
5674 public Location location;
5676 public IndexerDeclaration (FullNamedExpression type, MemberName interface_type,
5677 Parameters param_list, Location loc)
5680 this.interface_type = interface_type;
5681 this.param_list = param_list;
5682 this.location = loc;
5687 // We use this when we do not have an object in advance that is an IAnonymousHost
5689 public class SimpleAnonymousHost : IAnonymousHost {
5690 public static readonly SimpleAnonymousHost Simple = new SimpleAnonymousHost ();
5694 public static SimpleAnonymousHost GetSimple () {
5695 Simple.yields = false;
5699 public void SetYields ()
5704 public void Propagate (IAnonymousHost real_host)
5707 real_host.SetYields ();
5712 // A class used to hold info about an operator declarator
5714 struct OperatorDeclaration {
5715 public readonly Operator.OpType optype;
5716 public readonly FullNamedExpression ret_type;
5717 public readonly Location location;
5719 public OperatorDeclaration (Operator.OpType op, FullNamedExpression ret_type, Location location)
5722 this.ret_type = ret_type;
5723 this.location = location;
5727 void Error_ExpectingTypeName (Expression expr)
5729 if (expr is Invocation){
5730 Report.Error (1002, expr.Location, "Expecting `;'");
5732 expr.Error_InvalidExpressionStatement ();
5736 static void Error_ParameterModifierNotValid (string modifier, Location loc)
5738 Report.Error (631, loc, "The parameter modifier `{0}' is not valid in this context",
5742 static void Error_DuplicateParameterModifier (Location loc, Parameter.Modifier mod)
5744 Report.Error (1107, loc, "Duplicate parameter modifier `{0}'",
5745 Parameter.GetModifierSignature (mod));
5748 static void Error_TypeExpected (Location loc)
5750 Report.Error (1031, loc, "Type expected");
5753 void push_current_class (TypeContainer tc, object partial_token)
5755 if (partial_token != null)
5756 current_container = current_container.AddPartial (tc);
5758 current_container = current_container.AddTypeContainer (tc);
5762 DeclSpace pop_current_class ()
5764 DeclSpace retval = current_class;
5766 current_class = current_class.Parent;
5767 current_container = current_class.PartialContainer;
5773 // Given the @class_name name, it creates a fully qualified name
5774 // based on the containing declaration space
5777 MakeName (MemberName class_name)
5779 Namespace ns = current_namespace.NS;
5781 if (current_container.Name.Length == 0){
5782 if (ns.Name.Length != 0)
5783 return new MemberName (ns.MemberName, class_name);
5787 return new MemberName (current_container.MemberName, class_name);
5791 Block declare_local_variables (Expression type, ArrayList variable_declarators, Location loc)
5793 Block implicit_block;
5794 ArrayList inits = null;
5797 // We use the `Used' property to check whether statements
5798 // have been added to the current block. If so, we need
5799 // to create another block to contain the new declaration
5800 // otherwise, as an optimization, we use the same block to
5801 // add the declaration.
5803 // FIXME: A further optimization is to check if the statements
5804 // that were added were added as part of the initialization
5805 // below. In which case, no other statements have been executed
5806 // and we might be able to reduce the number of blocks for
5807 // situations like this:
5809 // int j = 1; int k = j + 1;
5811 if (current_block.Used)
5812 implicit_block = new Block (current_block, loc, Location.Null);
5814 implicit_block = current_block;
5816 foreach (VariableDeclaration decl in variable_declarators){
5818 if (implicit_block.AddVariable (type, decl.identifier, decl.Location) != null) {
5819 if (decl.expression_or_array_initializer != null){
5821 inits = new ArrayList (4);
5828 return implicit_block;
5830 foreach (VariableDeclaration decl in inits){
5832 Expression expr = decl.expression_or_array_initializer;
5834 LocalVariableReference var;
5835 var = new LocalVariableReference (implicit_block, decl.identifier, loc);
5837 assign = new SimpleAssign (var, expr, decl.Location);
5839 implicit_block.AddStatement (new StatementExpression (assign));
5842 return implicit_block;
5845 Block declare_local_constants (Expression type, ArrayList declarators)
5847 Block implicit_block;
5849 if (current_block.Used)
5850 implicit_block = new Block (current_block);
5852 implicit_block = current_block;
5854 foreach (VariableDeclaration decl in declarators){
5855 implicit_block.AddConstant (type, decl.identifier, (Expression) decl.expression_or_array_initializer, decl.Location);
5858 return implicit_block;
5861 string CheckAttributeTarget (string a, Location l)
5864 case "assembly" : case "module" : case "field" : case "method" : case "param" : case "property" : case "type" :
5868 Report.Warning (658, 1, l,
5869 "`{0}' is invalid attribute target. All attributes in this attribute section will be ignored", a);
5870 return string.Empty;
5873 static bool IsUnaryOperator (Operator.OpType op)
5877 case Operator.OpType.LogicalNot:
5878 case Operator.OpType.OnesComplement:
5879 case Operator.OpType.Increment:
5880 case Operator.OpType.Decrement:
5881 case Operator.OpType.True:
5882 case Operator.OpType.False:
5883 case Operator.OpType.UnaryPlus:
5884 case Operator.OpType.UnaryNegation:
5890 void syntax_error (Location l, string msg)
5892 Report.Error (1003, l, "Syntax error, " + msg);
5895 void note (string s)
5897 // Used to put annotations
5902 public Tokenizer Lexer {
5908 static CSharpParser ()
5910 oob_stack = new Stack ();
5913 public CSharpParser (SeekableStreamReader reader, CompilationUnit file, ArrayList defines)
5916 current_namespace = new NamespaceEntry (null, file, null);
5917 current_class = current_namespace.SlaveDeclSpace;
5918 current_container = current_class.PartialContainer; // == RootContest.ToplevelTypes
5920 lexer = new Tokenizer (reader, file, defines);
5923 public void parse ()
5925 int errors = Report.Errors;
5927 if (yacc_verbose_flag > 1)
5928 yyparse (lexer, new yydebug.yyDebugSimple ());
5931 Tokenizer tokenizer = lexer as Tokenizer;
5932 tokenizer.cleanup ();
5933 } catch (Exception e){
5935 // Removed for production use, use parser verbose to get the output.
5937 // Console.WriteLine (e);
5938 if (Report.Errors == errors)
5939 Report.Error (-25, lexer.Location, "Parsing error");
5940 if (yacc_verbose_flag > 0)
5941 Console.WriteLine (e);
5944 if (RootContext.ToplevelTypes.NamespaceEntry != null)
5945 throw new InternalErrorException ("who set it?");
5948 static void CheckToken (int error, int yyToken, string msg, Location loc)
5950 if (yyToken >= Token.FIRST_KEYWORD && yyToken <= Token.LAST_KEYWORD)
5951 Report.Error (error, loc, "{0}: `{1}' is a keyword", msg, yyNames [yyToken].ToLower ());
5953 Report.Error (error, loc, msg);
5956 void CheckIdentifierToken (int yyToken, Location loc)
5958 CheckToken (1041, yyToken, "Identifier expected", loc);
5961 string ConsumeStoredComment ()
5963 string s = tmpComment;
5965 Lexer.doc_state = XmlCommentState.Allowed;
5969 Location GetLocation (object obj)
5971 if (obj is MemberCore)
5972 return ((MemberCore) obj).Location;
5973 if (obj is MemberName)
5974 return ((MemberName) obj).Location;
5975 if (obj is LocatedToken)
5976 return ((LocatedToken) obj).Location;
5977 if (obj is Location)
5978 return (Location) obj;
5979 return lexer.Location;
5982 void start_block (Location loc)
5984 if (current_block == null || parsing_anonymous_method) {
5985 current_block = new ToplevelBlock (current_block, current_local_parameters, current_generic_method, loc);
5986 parsing_anonymous_method = false;
5988 current_block = new ExplicitBlock (current_block, loc, Location.Null);
5993 end_block (Location loc)
5995 Block retval = current_block.Explicit;
5996 retval.SetEndLocation (loc);
5997 current_block = retval.Parent;
6002 start_anonymous (bool lambda, Parameters parameters, Location loc)
6004 oob_stack.Push (current_anonymous_method);
6005 oob_stack.Push (current_local_parameters);
6007 current_local_parameters = parameters;
6009 current_anonymous_method = lambda
6010 ? new LambdaExpression (current_container, parameters, loc)
6011 : new AnonymousMethodExpression (current_container, parameters, loc);
6013 // Force the next block to be created as a ToplevelBlock
6014 parsing_anonymous_method = true;
6018 * Completes the anonymous method processing, if lambda_expr is null, this
6019 * means that we have a Statement instead of an Expression embedded
6021 AnonymousMethodExpression end_anonymous (ToplevelBlock anon_block, Location loc)
6023 AnonymousMethodExpression retval;
6025 if (RootContext.Version == LanguageVersion.ISO_1){
6026 Report.FeatureIsNotAvailable (loc, "anonymous methods");
6029 current_anonymous_method.Block = anon_block;
6030 retval = current_anonymous_method;
6033 current_local_parameters = (Parameters) oob_stack.Pop ();
6034 current_anonymous_method = (AnonymousMethodExpression) oob_stack.Pop ();