a2fd01c56d
Breaking out the Capture method and creating a separate nullary constructor makes the magic more obvious and makes it easier to create empty positions. Change-Id: Idd174522f11620fbd11679c7cd8f770ada5bde7d Reviewed-on: https://skia-review.googlesource.com/c/skia/+/438820 Reviewed-by: John Stiles <johnstiles@google.com> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
112 lines
2.6 KiB
C++
112 lines
2.6 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/SkString.h"
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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/DSLErrorHandling.h"
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#include <memory>
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class GrGLSLShaderBuilder;
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namespace SkSL {
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class Expression;
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class Statement;
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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 DSLVar;
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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, PositionInfo pos = PositionInfo::Capture());
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DSLStatement(DSLPossibleStatement stmt, PositionInfo pos = PositionInfo::Capture());
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DSLStatement(DSLBlock block);
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DSLStatement(DSLStatement&&) = default;
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~DSLStatement();
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DSLStatement& operator=(DSLStatement&& other) = default;
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bool valid() { return fStatement != nullptr; }
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std::unique_ptr<SkSL::Statement> release() {
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SkASSERT(this->valid());
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return std::move(fStatement);
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}
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private:
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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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std::unique_ptr<SkSL::Statement> releaseIfValid() {
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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 PositionInfo 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 PositionInfo 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 valid() { 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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