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[mono.git] / mcs / gmcs / cs-parser.jay
index 27e09a3679137993e9c2f8c6179411c0eaa49b9b..68df7ca00741aa2f52426ed8bea440c58ac8df02 100644 (file)
@@ -42,7 +42,7 @@ namespace Mono.CSharp
                ///   Current block is used to add statements as we find
                ///   them.  
                /// </summary>
-               Block      current_block, top_current_block;
+               Block      current_block;
 
                Delegate   current_delegate;
 
@@ -1515,8 +1515,8 @@ property_declaration
                        syntax_error (lexer.Location, "a property can't have type arguments");
 
                prop = new Property (current_class, (Expression) $3, (int) $2, false,
-                                    name, (Attributes) $1, get_block, set_block, accessors.declared_in_reverse);
-               
+                                    name, (Attributes) $1, get_block, set_block, accessors.declared_in_reverse, current_block);
+
                current_container.AddProperty (prop);
                implicit_value_parameter_type = null;
 
@@ -2323,11 +2323,10 @@ constructor_header
          }
          open_parens opt_formal_parameter_list CLOSE_PARENS
          {
-               current_local_parameters = (Parameters) $4;
-               current_block = top_current_block = new ToplevelBlock (null,
-                       current_local_parameters, null, Location.Null);
-                       
                LocatedToken lt = (LocatedToken) $1;
+               current_local_parameters = (Parameters) $4;
+               current_block = new ToplevelBlock (null, current_local_parameters, null, lt.Location);
+
                $$ = new Constructor (current_class, lt.Value, 0, current_local_parameters,
                                      null, lt.Location);
 
@@ -2337,7 +2336,7 @@ constructor_header
 
 constructor_body
        : block_prepared
-       | SEMICOLON             { current_block = top_current_block = null; $$ = null; }
+       | SEMICOLON             { current_block = null; $$ = null; }
        ;
 
 constructor_initializer
@@ -3196,6 +3195,97 @@ opt_object_initializer
          }
        ;
 
+opt_object_or_collection_initializer
+       : /* empty */           { $$ = null; }
+       | object_or_collection_initializer
+       ;
+
+object_or_collection_initializer
+       : object_initializer
+       | collection_initializer
+       ;
+
+object_initializer
+       : OPEN_BRACE opt_member_initializer_list CLOSE_BRACE
+         {
+               if ($2 == null)
+                       $$ = null;
+               else
+                       $$ = new ObjectInitializer ((ArrayList)$2);
+         }
+       | OPEN_BRACE member_initializer_list COMMA CLOSE_BRACE
+         {
+               $$ = new ObjectInitializer ((ArrayList) $2);
+         }
+       ;
+
+opt_member_initializer_list
+       : /* empty */           { $$ = null; }
+       | member_initializer_list
+       ;
+
+member_initializer_list
+       : member_initializer
+         {
+               ArrayList a = new ArrayList ();
+               a.Add ($1);
+               $$ = a;
+         }
+       | member_initializer_list COMMA member_initializer
+         {
+               ArrayList a = (ArrayList)$1;
+               a.Add ($3);
+               $$ = a;
+         }
+       ;
+
+member_initializer
+       : IDENTIFIER ASSIGN initializer_value
+         {
+               LocatedToken id = $1 as LocatedToken;
+               IInitializable i = $3 as IInitializable;
+               if (i != null)
+                       $$ = new Initializer (id.Value, i);
+               else
+                       $$ = new Initializer (id.Value, (Expression)$3);
+         }
+       ;
+
+initializer_value
+       : expression
+       | object_or_collection_initializer
+       ;
+
+collection_initializer
+       : OPEN_BRACE element_initializer_list CLOSE_BRACE
+         {
+               $$ = new CollectionInitializer ((ArrayList) $2);
+         }
+       | OPEN_BRACE element_initializer_list COMMA CLOSE_BRACE
+         {
+               $$ = new CollectionInitializer ((ArrayList) $2);
+         }
+       ;
+
+element_initializer_list
+       : element_initializer
+         {
+               ArrayList a = new ArrayList ();
+               a.Add ($1);
+               $$ = a;
+         }
+       | element_initializer_list COMMA element_initializer
+         {
+               ArrayList a = $1 as ArrayList;
+               a.Add ($3);
+               $$ = a;
+         }
+       ;
+
+element_initializer
+       : non_assignment_expression
+       ;
+
 opt_argument_list
        : /* empty */           { $$ = null; }
        | argument_list
@@ -3351,12 +3441,11 @@ post_decrement_expression
 new_expression
        : object_or_delegate_creation_expression
        | array_creation_expression
-       | collection_initialization_expression
        | anonymous_type_expression
        ;
 
 object_or_delegate_creation_expression
-       : NEW type OPEN_PARENS opt_argument_list CLOSE_PARENS opt_object_initializer
+       : NEW type OPEN_PARENS opt_argument_list CLOSE_PARENS opt_object_or_collection_initializer
          {
                if ($6 != null) {
                        if (RootContext.Version < LanguageVersion.LINQ) {
@@ -3364,22 +3453,19 @@ object_or_delegate_creation_expression
                                $$ = null;
                        }
                        else
-                               $$ = new NewInitialize ((Expression) $2, (ArrayList) $4, (Location) $1, (ArrayList) $6);
+                               $$ = new NewInitialize ((Expression) $2, (ArrayList) $4, (IInitializable) $6, (Location) $1);
                }
                else
                        $$ = new New ((Expression) $2, (ArrayList) $4, (Location) $1);
          }
-       ;
-
-collection_initialization_expression
-       : NEW type OPEN_BRACE argument_list CLOSE_BRACE
+       | NEW type object_or_collection_initializer
          {
                if (RootContext.Version < LanguageVersion.LINQ) {
                        Report.Error (1526, (Location) $1, "A new expression requires () or [] after type");
-                       $$ = null;
-               }
-               else
-                       $$ = new CollectionInitialize ((Expression) $2, new ArrayList (), (Location) $1, (ArrayList) $4);
+                       $$ = null;
+               }
+               else
+                       $$ = new NewInitialize ((Expression) $2, new ArrayList (), (IInitializable) $3, (Location) $1);
          }
        ;
 
@@ -4667,11 +4753,7 @@ switch_section
          }
          statement_list 
          {
-               Block topmost = current_block;
-
-               while (topmost.Implicit)
-                       topmost = topmost.Parent;
-               $$ = new SwitchSection ((ArrayList) $1, topmost);
+               $$ = new SwitchSection ((ArrayList) $1, current_block.Explicit);
          }
        ;
 
@@ -4731,8 +4813,9 @@ for_statement
        : FOR open_parens 
          opt_for_initializer SEMICOLON
          {
-               Block assign_block = new Block (current_block);
-               current_block = assign_block;
+               Location l = lexer.Location;
+               start_block (l);  
+               Block assign_block = current_block;
 
                if ($3 is DictionaryEntry){
                        DictionaryEntry de = (DictionaryEntry) $3;
@@ -4748,7 +4831,6 @@ for_statement
                                if (vi == null)
                                        continue;
 
-                               Location l = lexer.Location;
                                Expression expr = decl.expression_or_array_initializer;
                                        
                                LocalVariableReference var;
@@ -4777,10 +4859,8 @@ for_statement
                For f = new For ((Statement) $5, (Expression) $6, (Statement) $8, (Statement) $10, l);
 
                current_block.AddStatement (f);
-               while (current_block.Implicit)
-                       current_block = current_block.Parent;
-               $$ = current_block;
-               current_block = current_block.Parent;
+
+               $$ = end_block (lexer.Location);
          }
        ;
 
@@ -4813,7 +4893,7 @@ statement_expression_list
          {
                // CHANGE: was `null'
                Statement s = (Statement) $1;
-               Block b = new Block (current_block, Block.Flags.Implicit, s.loc, lexer.Location);   
+               Block b = new Block (current_block, s.loc, lexer.Location);   
 
                b.AddStatement (s);
                $$ = b;
@@ -4836,8 +4916,8 @@ foreach_statement
        | FOREACH open_parens type IDENTIFIER IN
          expression CLOSE_PARENS 
          {
-               Block foreach_block = new Block (current_block);
-               current_block = foreach_block;
+               start_block (lexer.Location);
+               Block foreach_block = current_block;
 
                LocatedToken lt = (LocatedToken) $4;
                Location l = lt.Location;
@@ -4866,10 +4946,7 @@ foreach_statement
                        current_block.AddStatement (f);
                }
 
-               while (current_block.Implicit)
-                         current_block = current_block.Parent;
-               $$ = current_block;
-               current_block = current_block.Parent;
+               $$ = end_block (lexer.Location);
          }
        ;
 
@@ -5067,9 +5144,8 @@ catch_clause
 
                                one.Add (new VariableDeclaration (lt, null));
 
-                               current_block = new Block (current_block);
-                               Block b = declare_local_variables (type, one, lt.Location);
-                               current_block = b;
+                               start_block (lexer.Location);
+                               current_block = declare_local_variables (type, one, lt.Location);
                        }
                }
          } block {
@@ -5084,10 +5160,7 @@ catch_clause
 
                        if (lt != null){
                                id = lt.Value;
-                               while (current_block.Implicit)
-                                       current_block = current_block.Parent;
-                               var_block = current_block;
-                               current_block = current_block.Parent;
+                               var_block = end_block (lexer.Location);
                        }
                }
 
@@ -5141,8 +5214,8 @@ fixed_statement
                Location l = (Location) $1;
                int top = list.Count;
 
-               Block assign_block = new Block (current_block);
-               current_block = assign_block;
+               start_block (lexer.Location);
+               Block assign_block = current_block;
 
                for (int i = 0; i < top; i++){
                        Pair p = (Pair) list [i];
@@ -5168,10 +5241,8 @@ fixed_statement
                Fixed f = new Fixed ((Expression) $3, (ArrayList) $4, (Statement) $7, l);
 
                current_block.AddStatement (f);
-               while (current_block.Implicit)
-                       current_block = current_block.Parent;
-               $$ = current_block;
-               current_block = current_block.Parent;
+
+               $$ = end_block (lexer.Location);
          }
        ;
 
@@ -5219,8 +5290,8 @@ lock_statement
 using_statement
        : USING open_parens resource_acquisition CLOSE_PARENS
          {
-               Block assign_block = new Block (current_block);
-               current_block = assign_block;
+               start_block (lexer.Location);
+               Block assign_block = current_block;
 
                if ($3 is DictionaryEntry){
                        DictionaryEntry de = (DictionaryEntry) $3;
@@ -5268,10 +5339,7 @@ using_statement
          {
                Using u = new Using ($5, (Statement) $6, (Location) $1);
                current_block.AddStatement (u);
-               while (current_block.Implicit)
-                       current_block = current_block.Parent;
-               $$ = current_block;
-               current_block = current_block.Parent;
+               $$ = end_block (lexer.Location);
          }
        ; 
 
@@ -5287,15 +5355,15 @@ query_expression
        : from_clause query_body
          {
                lexer.QueryParsing = false;
-               $$ = new QueryExpression ((Expression)$1, (Expression)$2);
-               current_block = current_block.Parent;
+               $$ = new Linq.QueryExpression (current_container, current_block, (Expression)$1, (Linq.AQueryClause)$2); 
+               end_block (lexer.Location);
          }
        ;
        
 from_clause
        : FROM IDENTIFIER IN expression opt_join_clauses
          {
-               current_block = new Block (current_block);
+               start_block (lexer.Location);
                LocatedToken lt = (LocatedToken) $2;
                
                LocalInfo vi = current_block.AddVariable (TypeManager.system_object_expr, lt.Value, lt.Location);  // TODO: null is var type
@@ -5306,11 +5374,12 @@ from_clause
          }
        | FROM type IDENTIFIER IN expression opt_join_clauses
          {
-               current_block = new Block (current_block);
+               start_block (lexer.Location);
                LocatedToken lt = (LocatedToken) $3;
 
-               LocalInfo vi = current_block.AddVariable ((Expression)$2, lt.Value, lt.Location);
-               $$ = $5;
+               Expression type = (Expression)$2;
+               LocalInfo vi = current_block.AddVariable (type, lt.Value, lt.Location);
+               $$ = new Linq.Cast (type, (Expression)$5, lt.Location);
          }
        ;
 
@@ -5338,7 +5407,14 @@ join_clause_body
 query_body
        : opt_from_let_where_clauses opt_orderby_clause SELECT expression opt_query_continuation
          {
-           $$ = new Select (current_container, current_block, (Expression)$4, GetLocation ($3));
+               Linq.AQueryClause ret = new Linq.Select ((Expression)$4, GetLocation ($3));
+               
+               if ($1 != null) {
+                       ((Linq.AQueryClause)$1).Next = ret;
+                       ret = (Linq.AQueryClause)$1;
+               }
+                       
+               $$ = ret;
          }
        | opt_from_let_where_clauses opt_orderby_clause group_clause opt_query_continuation
        ;
@@ -5365,6 +5441,9 @@ let_clause
 
 where_clause
        : WHERE boolean_expression
+         {
+               $$ = new Linq.Where ((Expression)$2, GetLocation ($1));
+         }
        ;
        
 opt_orderby_clause
@@ -5593,7 +5672,7 @@ Block declare_local_variables (Expression type, ArrayList variable_declarators,
        // int j = 1;  int k = j + 1;
        //
        if (current_block.Used)
-               implicit_block = new Block (current_block, Block.Flags.Implicit, loc, Location.Null);
+               implicit_block = new Block (current_block, loc, Location.Null);
        else
                implicit_block = current_block;
 
@@ -5631,7 +5710,7 @@ Block declare_local_constants (Expression type, ArrayList declarators)
        Block implicit_block;
 
        if (current_block.Used)
-               implicit_block = new Block (current_block, Block.Flags.Implicit);
+               implicit_block = new Block (current_block);
        else
                implicit_block = current_block;
 
@@ -5801,35 +5880,20 @@ Location GetLocation (object obj)
 void 
 start_block (Location loc)
 {
-       if (parsing_anonymous_method) {
-               top_current_block = new ToplevelBlock (
-                       current_block, current_local_parameters, current_generic_method, loc);
-               if (current_block != null)
-                       current_block.AddAnonymousChild ((ToplevelBlock) top_current_block);
-               current_block = top_current_block;
+       if (current_block == null || parsing_anonymous_method) {
+               current_block = new ToplevelBlock (current_block, current_local_parameters, current_generic_method, loc);
                parsing_anonymous_method = false;
-       } else if (current_block == null) {
-               current_block = new ToplevelBlock (
-                       (ToplevelBlock) top_current_block, current_local_parameters,
-                       current_generic_method, loc);
-               top_current_block = current_block;
        } else {
-               current_block = new Block (current_block, loc, Location.Null);
+               current_block = new ExplicitBlock (current_block, loc, Location.Null);
        }
 }
 
 Block
 end_block (Location loc)
 {
-       Block retval;
-
-       while (current_block.Implicit)
-               current_block = current_block.Parent;
-       retval = current_block;
-       current_block.SetEndLocation (loc);
-       current_block = current_block.Parent;
-       if (current_block == null)
-               top_current_block = null;
+       Block retval = current_block.Explicit;
+       retval.SetEndLocation (loc);
+       current_block = retval.Parent;
        return retval;
 }
 
@@ -5841,18 +5905,17 @@ start_anonymous (bool lambda, Parameters parameters, Location loc)
 
        current_local_parameters = parameters;
 
-       // Force the next block to be created as a ToplevelBlock
-       oob_stack.Push (current_block);
-       oob_stack.Push (top_current_block);
+       ToplevelBlock top_current_block = current_block == null ? null : current_block.Toplevel;
 
        current_anonymous_method = lambda 
                ? new LambdaExpression (
                        current_anonymous_method, current_generic_method, current_container,
-                       parameters, (ToplevelBlock) top_current_block, loc) 
+                       parameters, top_current_block, loc) 
                : new AnonymousMethodExpression (
                        current_anonymous_method, current_generic_method, current_container,
-                       parameters, (ToplevelBlock) top_current_block, loc);
+                       parameters, top_current_block, loc);
 
+       // Force the next block to be created as a ToplevelBlock
        parsing_anonymous_method = true;
 }
 
@@ -5865,15 +5928,10 @@ end_anonymous (ToplevelBlock anon_block, Location loc)
 {
        AnonymousMethodExpression retval;
 
-       top_current_block = (Block) oob_stack.Pop ();
-       current_block = (Block) oob_stack.Pop ();
-
        if (RootContext.Version == LanguageVersion.ISO_1){
                Report.FeatureIsNotISO1 (loc, "anonymous methods");
                retval = null;
        } else  {
-               anon_block.Parent = current_block;
-
                current_anonymous_method.Block = anon_block;
                if ((anonymous_host != null) && (current_anonymous_method.Parent == null))
                        anonymous_host.AddAnonymousMethod (current_anonymous_method);