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- /*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #ifndef SKSL_INTLITERAL
- #define SKSL_INTLITERAL
- #include "src/sksl/SkSLContext.h"
- #include "src/sksl/ir/SkSLExpression.h"
- namespace SkSL {
- /**
- * A literal integer.
- */
- struct IntLiteral : public Expression {
- // FIXME: we will need to revisit this if/when we add full support for both signed and unsigned
- // 64-bit integers, but for right now an int64_t will hold every value we care about
- IntLiteral(const Context& context, int offset, int64_t value)
- : INHERITED(offset, kIntLiteral_Kind, *context.fInt_Type)
- , fValue(value) {}
- IntLiteral(int offset, int64_t value, const Type* type = nullptr)
- : INHERITED(offset, kIntLiteral_Kind, *type)
- , fValue(value) {}
- String description() const override {
- return to_string(fValue);
- }
- bool hasSideEffects() const override {
- return false;
- }
- bool isConstant() const override {
- return true;
- }
- bool compareConstant(const Context& context, const Expression& other) const override {
- IntLiteral& i = (IntLiteral&) other;
- return fValue == i.fValue;
- }
- int coercionCost(const Type& target) const override {
- if (target.isSigned() || target.isUnsigned() || target.isFloat()) {
- return 0;
- }
- return INHERITED::coercionCost(target);
- }
- int64_t getConstantInt() const override {
- return fValue;
- }
- std::unique_ptr<Expression> clone() const override {
- return std::unique_ptr<Expression>(new IntLiteral(fOffset, fValue, &fType));
- }
- const int64_t fValue;
- typedef Expression INHERITED;
- };
- } // namespace
- #endif
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