| /* |
| * 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 { |
| static constexpr Kind kExpressionKind = kIntLiteral_Kind; |
| |
| // 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, kExpressionKind, *context.fInt_Type) |
| , fValue(value) {} |
| |
| IntLiteral(int offset, int64_t value, const Type* type = nullptr) |
| : INHERITED(offset, kExpressionKind, *type) |
| , fValue(value) {} |
| |
| String description() const override { |
| return to_string(fValue); |
| } |
| |
| bool hasProperty(Property property) const override { |
| return false; |
| } |
| |
| bool isCompileTimeConstant() const override { |
| return true; |
| } |
| |
| bool compareConstant(const Context& context, const Expression& other) const override { |
| return fValue == other.as<IntLiteral>().fValue; |
| } |
| |
| int coercionCost(const Type& target) const override { |
| if (target.isSigned() || target.isUnsigned() || target.isFloat() || |
| target.kind() == Type::kEnum_Kind) { |
| 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 SkSL |
| |
| #endif |