ccd85d5835
Bug: skia:13173 Change-Id: Ifbcce77605dd781563568293fc501dfa31f143da Reviewed-on: https://skia-review.googlesource.com/c/skia/+/528706 Reviewed-by: Brian Osman <brianosman@google.com> Reviewed-by: John Stiles <johnstiles@google.com> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
118 lines
2.7 KiB
C++
118 lines
2.7 KiB
C++
/*
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* Copyright 2021 Google LLC.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SKSL_DSL_STATEMENT
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#define SKSL_DSL_STATEMENT
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#include "include/core/SkTypes.h"
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#include "include/private/SkSLStatement.h"
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#include "include/sksl/SkSLPosition.h"
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#include <memory>
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#include <utility>
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namespace SkSL {
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class Expression;
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namespace dsl {
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class DSLBlock;
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class DSLExpression;
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class DSLPossibleExpression;
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class DSLPossibleStatement;
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class DSLStatement {
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public:
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DSLStatement();
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DSLStatement(DSLExpression expr);
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DSLStatement(DSLPossibleExpression expr, Position pos = {});
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DSLStatement(DSLPossibleStatement stmt, Position pos = {});
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DSLStatement(DSLBlock block);
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DSLStatement(DSLStatement&&) = default;
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DSLStatement(std::unique_ptr<SkSL::Statement> stmt);
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DSLStatement(std::unique_ptr<SkSL::Expression> expr);
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~DSLStatement();
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DSLStatement& operator=(DSLStatement&& other) = default;
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Position position() {
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SkASSERT(this->hasValue());
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return fStatement->fPosition;
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}
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void setPosition(Position pos) {
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SkASSERT(this->hasValue());
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fStatement->fPosition = pos;
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}
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bool hasValue() { return fStatement != nullptr; }
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std::unique_ptr<SkSL::Statement> release() {
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SkASSERT(this->hasValue());
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return std::move(fStatement);
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}
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private:
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std::unique_ptr<SkSL::Statement> releaseIfPossible() {
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return std::move(fStatement);
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}
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std::unique_ptr<SkSL::Statement> fStatement;
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friend class DSLBlock;
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friend class DSLCore;
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friend class DSLExpression;
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friend class DSLPossibleStatement;
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friend class DSLWriter;
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friend DSLStatement operator,(DSLStatement left, DSLStatement right);
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};
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/**
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* Represents a Statement which may have failed and/or have pending errors to report. Converting a
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* PossibleStatement into a Statement requires a Position so that any pending errors can be
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* reported at the correct position.
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*
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* PossibleStatement is used instead of Statement in situations where it is not possible to capture
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* the Position at the time of Statement construction.
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*/
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class DSLPossibleStatement {
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public:
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DSLPossibleStatement(std::unique_ptr<SkSL::Statement> stmt);
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DSLPossibleStatement(DSLPossibleStatement&& other) = default;
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~DSLPossibleStatement();
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bool hasValue() { return fStatement != nullptr; }
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std::unique_ptr<SkSL::Statement> release() {
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return DSLStatement(std::move(*this)).release();
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}
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private:
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std::unique_ptr<SkSL::Statement> fStatement;
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friend class DSLStatement;
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};
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DSLStatement operator,(DSLStatement left, DSLStatement right);
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} // namespace dsl
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} // namespace SkSL
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#endif
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