1 /*
2 * Copyright 2024 Google LLC
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "src/sksl/ir/SkSLSymbol.h"
9
10 #include "src/sksl/ir/SkSLExpression.h"
11 #include "src/sksl/ir/SkSLFieldAccess.h"
12 #include "src/sksl/ir/SkSLFieldSymbol.h"
13 #include "src/sksl/ir/SkSLFunctionDeclaration.h"
14 #include "src/sksl/ir/SkSLFunctionReference.h"
15 #include "src/sksl/ir/SkSLType.h"
16 #include "src/sksl/ir/SkSLTypeReference.h"
17 #include "src/sksl/ir/SkSLVariable.h"
18 #include "src/sksl/ir/SkSLVariableReference.h"
19
20 #include <utility>
21
22 namespace SkSL {
23
instantiate(const Context & context,Position pos) const24 std::unique_ptr<Expression> Symbol::instantiate(const Context& context, Position pos) const {
25 switch (this->kind()) {
26 case Symbol::Kind::kFunctionDeclaration:
27 return std::make_unique<FunctionReference>(
28 context, pos, &this->as<FunctionDeclaration>());
29
30 case Symbol::Kind::kVariable: {
31 const Variable* var = &this->as<Variable>();
32 // default to kRead_RefKind; this will be corrected later if the variable is written to
33 return VariableReference::Make(pos, var, VariableReference::RefKind::kRead);
34 }
35 case Symbol::Kind::kField: {
36 const FieldSymbol* field = &this->as<FieldSymbol>();
37 auto base = VariableReference::Make(
38 pos, &field->owner(), VariableReference::RefKind::kRead);
39 return FieldAccess::Make(context,
40 pos,
41 std::move(base),
42 field->fieldIndex(),
43 FieldAccess::OwnerKind::kAnonymousInterfaceBlock);
44 }
45 case Symbol::Kind::kType:
46 return TypeReference::Convert(context, pos, &this->as<Type>());
47
48 default:
49 SkDEBUGFAILF("unsupported symbol type %d\n", fKind);
50 return nullptr;
51 }
52 }
53
54 } // namespace SkSL
55