| /* |
| * 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_FIELDACCESS |
| #define SKSL_FIELDACCESS |
| |
| #include "src/sksl/SkSLUtil.h" |
| #include "src/sksl/ir/SkSLExpression.h" |
| |
| namespace SkSL { |
| |
| /** |
| * An expression which extracts a field from a struct, as in 'foo.bar'. |
| */ |
| struct FieldAccess : public Expression { |
| enum OwnerKind { |
| kDefault_OwnerKind, |
| // this field access is to a field of an anonymous interface block (and thus, the field name |
| // is actually in global scope, so only the field name needs to be written in GLSL) |
| kAnonymousInterfaceBlock_OwnerKind |
| }; |
| |
| FieldAccess(std::unique_ptr<Expression> base, int fieldIndex, |
| OwnerKind ownerKind = kDefault_OwnerKind) |
| : INHERITED(base->fOffset, kFieldAccess_Kind, *base->fType.fields()[fieldIndex].fType) |
| , fBase(std::move(base)) |
| , fFieldIndex(fieldIndex) |
| , fOwnerKind(ownerKind) {} |
| |
| bool hasProperty(Property property) const override { |
| return fBase->hasProperty(property); |
| } |
| |
| int nodeCount() const override { |
| return 1 + fBase->nodeCount(); |
| } |
| |
| std::unique_ptr<Expression> clone() const override { |
| return std::unique_ptr<Expression>(new FieldAccess(fBase->clone(), fFieldIndex, |
| fOwnerKind)); |
| } |
| |
| String description() const override { |
| return fBase->description() + "." + fBase->fType.fields()[fFieldIndex].fName; |
| } |
| |
| std::unique_ptr<Expression> fBase; |
| const int fFieldIndex; |
| const OwnerKind fOwnerKind; |
| |
| typedef Expression INHERITED; |
| }; |
| |
| } // namespace |
| |
| #endif |