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// Copyright 2020 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SRC_AST_STATEMENT_H_
#define SRC_AST_STATEMENT_H_
#include <memory>
#include <vector>
#include "src/ast/node.h"
namespace tint {
namespace ast {
class AssignmentStatement;
class BlockStatement;
class BreakStatement;
class CallStatement;
class CaseStatement;
class ContinueStatement;
class DiscardStatement;
class ElseStatement;
class FallthroughStatement;
class IfStatement;
class LoopStatement;
class ReturnStatement;
class SwitchStatement;
class VariableDeclStatement;
/// Base statement class
class Statement : public Node {
public:
~Statement() override;
/// @returns true if this is an assign statement
virtual bool IsAssign() const;
/// @returns true if this is a block statement
virtual bool IsBlock() const;
/// @returns true if this is a break statement
virtual bool IsBreak() const;
/// @returns true if this is a call statement
virtual bool IsCall() const;
/// @returns true if this is a case statement
virtual bool IsCase() const;
/// @returns true if this is a continue statement
virtual bool IsContinue() const;
/// @returns true if this is a discard statement
virtual bool IsDiscard() const;
/// @returns true if this is an else statement
virtual bool IsElse() const;
/// @returns true if this is a fallthrough statement
virtual bool IsFallthrough() const;
/// @returns true if this is an if statement
virtual bool IsIf() const;
/// @returns true if this is a loop statement
virtual bool IsLoop() const;
/// @returns true if this is a return statement
virtual bool IsReturn() const;
/// @returns true if this is a switch statement
virtual bool IsSwitch() const;
/// @returns true if this is an variable statement
virtual bool IsVariableDecl() const;
/// @returns the statement as a const assign statement
const AssignmentStatement* AsAssign() const;
/// @returns the statement as a const block statement
const BlockStatement* AsBlock() const;
/// @returns the statement as a const break statement
const BreakStatement* AsBreak() const;
/// @returns the statement as a const call statement
const CallStatement* AsCall() const;
/// @returns the statement as a const case statement
const CaseStatement* AsCase() const;
/// @returns the statement as a const continue statement
const ContinueStatement* AsContinue() const;
/// @returns the statement as a const discard statement
const DiscardStatement* AsDiscard() const;
/// @returns the statement as a const else statement
const ElseStatement* AsElse() const;
/// @returns the statement as a const fallthrough statement
const FallthroughStatement* AsFallthrough() const;
/// @returns the statement as a const if statement
const IfStatement* AsIf() const;
/// @returns the statement as a const loop statement
const LoopStatement* AsLoop() const;
/// @returns the statement as a const return statement
const ReturnStatement* AsReturn() const;
/// @returns the statement as a const switch statement
const SwitchStatement* AsSwitch() const;
/// @returns the statement as a const variable statement
const VariableDeclStatement* AsVariableDecl() const;
/// @returns the statement as an assign statement
AssignmentStatement* AsAssign();
/// @returns the statement as a block statement
BlockStatement* AsBlock();
/// @returns the statement as a break statement
BreakStatement* AsBreak();
/// @returns the statement as a call statement
CallStatement* AsCall();
/// @returns the statement as a case statement
CaseStatement* AsCase();
/// @returns the statement as a continue statement
ContinueStatement* AsContinue();
/// @returns the statement as a discard statement
DiscardStatement* AsDiscard();
/// @returns the statement as a else statement
ElseStatement* AsElse();
/// @returns the statement as a fallthrough statement
FallthroughStatement* AsFallthrough();
/// @returns the statement as a if statement
IfStatement* AsIf();
/// @returns the statement as a loop statement
LoopStatement* AsLoop();
/// @returns the statement as a return statement
ReturnStatement* AsReturn();
/// @returns the statement as a switch statement
SwitchStatement* AsSwitch();
/// @returns the statement as an variable statement
VariableDeclStatement* AsVariableDecl();
protected:
/// Constructor
Statement();
/// Constructor
/// @param source the source of the expression
explicit Statement(const Source& source);
/// Move constructor
Statement(Statement&&);
private:
Statement(const Statement&) = delete;
};
} // namespace ast
} // namespace tint
#endif // SRC_AST_STATEMENT_H_