88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
// 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_IF_STATEMENT_H_
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#define SRC_AST_IF_STATEMENT_H_
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#include <memory>
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#include <utility>
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#include "src/ast/block_statement.h"
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#include "src/ast/else_statement.h"
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#include "src/ast/expression.h"
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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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/// An if statement
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class IfStatement : public Castable<IfStatement, Statement> {
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public:
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/// Constructor
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/// @param source the source information
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/// @param condition the if condition
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/// @param body the if body
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/// @param else_stmts the else statements
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IfStatement(const Source& source,
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Expression* condition,
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BlockStatement* body,
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ElseStatementList else_stmts);
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/// Move constructor
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IfStatement(IfStatement&&);
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~IfStatement() override;
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/// @returns the if condition or nullptr if none set
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Expression* condition() const { return condition_; }
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/// @returns the if body
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const BlockStatement* body() const { return body_; }
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/// @returns the if body
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BlockStatement* body() { return body_; }
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/// @returns the else statements
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const ElseStatementList& else_statements() const { return else_statements_; }
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/// @returns the else statements
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ElseStatementList& else_statements() { return else_statements_; }
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/// @returns true if there are else statements
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bool has_else_statements() const { return !else_statements_.empty(); }
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/// Clones this node and all transitive child nodes using the `CloneContext`
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/// `ctx`.
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/// @note Semantic information such as resolved expression type and intrinsic
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/// information is not cloned.
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/// @param ctx the clone context
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/// @return the newly cloned node
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IfStatement* Clone(CloneContext* ctx) 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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IfStatement(const IfStatement&) = delete;
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Expression* condition_ = nullptr;
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BlockStatement* body_ = nullptr;
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ElseStatementList else_statements_;
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};
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} // namespace ast
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} // namespace tint
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#endif // SRC_AST_IF_STATEMENT_H_
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