89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
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// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef SRC_AST_BLOCK_STATEMENT_H_
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#define SRC_AST_BLOCK_STATEMENT_H_
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#include <memory>
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#include <utility>
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#include <vector>
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#include "src/ast/statement.h"
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namespace tint {
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namespace ast {
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/// A block statement
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class BlockStatement : public Statement {
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public:
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/// Constructor
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BlockStatement();
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/// Constructor
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/// @param source the block statement source
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explicit BlockStatement(const Source& source);
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/// Move constructor
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BlockStatement(BlockStatement&&);
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~BlockStatement() override;
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/// Appends a statement to the block
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/// @param stmt the statement to append
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void append(std::unique_ptr<ast::Statement> stmt) {
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statements_.push_back(std::move(stmt));
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}
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/// @returns the number of statements directly in the block
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size_t size() const { return statements_.size(); }
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/// Retrieves the statement at |idx|
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/// @param idx the index. The index is not bounds checked.
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/// @returns the statement at |idx|
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ast::Statement* operator[](size_t idx) { return statements_[idx].get(); }
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/// Retrieves the statement at |idx|
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/// @param idx the index. The index is not bounds checked.
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/// @returns the statement at |idx|
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const ast::Statement* operator[](size_t idx) const {
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return statements_[idx].get();
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}
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/// @returns the beginning iterator
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std::vector<std::unique_ptr<ast::Statement>>::const_iterator begin() const {
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return statements_.begin();
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}
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/// @returns the ending iterator
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std::vector<std::unique_ptr<ast::Statement>>::const_iterator end() const {
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return statements_.end();
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}
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/// @returns true if this is a block statement
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bool IsBlock() const override;
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/// @returns true if the node is valid
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bool IsValid() const override;
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/// Writes a representation of the node to the output stream
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/// @param out the stream to write to
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/// @param indent number of spaces to indent the node when writing
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void to_str(std::ostream& out, size_t indent) const override;
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private:
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BlockStatement(const BlockStatement&) = delete;
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std::vector<std::unique_ptr<ast::Statement>> statements_;
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};
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} // namespace ast
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} // namespace tint
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#endif // SRC_AST_BLOCK_STATEMENT_H_
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