Ryan Macnak
b8760fed67
Change-Id: I4d3c6500577d5285ced327954040dab42ba92341 Reviewed-on: https://dart-review.googlesource.com/c/78823 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Siva Annamalai <asiva@google.com>
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_AST_H_
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#define RUNTIME_VM_AST_H_
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#include "platform/assert.h"
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#include "vm/allocation.h"
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#include "vm/growable_array.h"
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#include "vm/object.h"
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#include "vm/scopes.h"
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#include "vm/token.h"
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#include "vm/token_position.h"
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namespace dart {
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#define FOR_EACH_NODE(V) \
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V(Sequence) \
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#define FORWARD_DECLARATION(BaseName) class BaseName##Node;
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FOR_EACH_NODE(FORWARD_DECLARATION)
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#undef FORWARD_DECLARATION
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#define DECLARE_COMMON_NODE_FUNCTIONS(type) \
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virtual type* As##type() { return this; }
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class AstNode : public ZoneAllocated {
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public:
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explicit AstNode(TokenPosition token_pos) : token_pos_(token_pos) {
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ASSERT(!token_pos_.IsClassifying() ||
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(token_pos_ == TokenPosition::kMethodExtractor));
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}
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virtual ~AstNode() {}
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TokenPosition token_pos() const { return token_pos_; }
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#define AST_TYPE_CHECK(BaseName) \
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bool Is##BaseName##Node() { return As##BaseName##Node() != NULL; } \
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virtual BaseName##Node* As##BaseName##Node() { return NULL; }
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FOR_EACH_NODE(AST_TYPE_CHECK)
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#undef AST_TYPE_CHECK
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protected:
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friend class ParsedFunction;
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private:
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const TokenPosition token_pos_;
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DISALLOW_COPY_AND_ASSIGN(AstNode);
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};
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class SequenceNode : public AstNode {
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public:
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SequenceNode(TokenPosition token_pos, LocalScope* scope)
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: AstNode(token_pos), scope_(scope), nodes_(4), label_(NULL) {}
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LocalScope* scope() const { return scope_; }
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SourceLabel* label() const { return label_; }
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void set_label(SourceLabel* value) { label_ = value; }
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DECLARE_COMMON_NODE_FUNCTIONS(SequenceNode);
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private:
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LocalScope* scope_;
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GrowableArray<AstNode*> nodes_;
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SourceLabel* label_;
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DISALLOW_COPY_AND_ASSIGN(SequenceNode);
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};
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} // namespace dart
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#undef DECLARE_COMMON_NODE_FUNCTIONS
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#endif // RUNTIME_VM_AST_H_
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