ethannicholas | b3058bd | 2016-07-01 08:22:01 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 Google Inc. |
| 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 | #ifndef SKSL_FIELDACCESS |
| 9 | #define SKSL_FIELDACCESS |
| 10 | |
| 11 | #include "SkSLExpression.h" |
| 12 | #include "SkSLUtil.h" |
| 13 | |
| 14 | namespace SkSL { |
| 15 | |
| 16 | /** |
| 17 | * An expression which extracts a field from a struct, as in 'foo.bar'. |
| 18 | */ |
| 19 | struct FieldAccess : public Expression { |
ethannicholas | f789b38 | 2016-08-03 12:43:36 -0700 | [diff] [blame] | 20 | enum OwnerKind { |
| 21 | kDefault_OwnerKind, |
| 22 | // this field access is to a field of an anonymous interface block (and thus, the field name |
| 23 | // is actually in global scope, so only the field name needs to be written in GLSL) |
| 24 | kAnonymousInterfaceBlock_OwnerKind |
| 25 | }; |
| 26 | |
| 27 | FieldAccess(std::unique_ptr<Expression> base, int fieldIndex, |
| 28 | OwnerKind ownerKind = kDefault_OwnerKind) |
ethannicholas | 0730be7 | 2016-09-01 07:59:02 -0700 | [diff] [blame] | 29 | : INHERITED(base->fPosition, kFieldAccess_Kind, *base->fType.fields()[fieldIndex].fType) |
ethannicholas | b3058bd | 2016-07-01 08:22:01 -0700 | [diff] [blame] | 30 | , fBase(std::move(base)) |
ethannicholas | f789b38 | 2016-08-03 12:43:36 -0700 | [diff] [blame] | 31 | , fFieldIndex(fieldIndex) |
| 32 | , fOwnerKind(ownerKind) {} |
ethannicholas | b3058bd | 2016-07-01 08:22:01 -0700 | [diff] [blame] | 33 | |
Greg Daniel | 792d0f1 | 2016-11-20 14:53:35 +0000 | [diff] [blame^] | 34 | virtual std::string description() const override { |
ethannicholas | d598f79 | 2016-07-25 10:08:54 -0700 | [diff] [blame] | 35 | return fBase->description() + "." + fBase->fType.fields()[fFieldIndex].fName; |
ethannicholas | b3058bd | 2016-07-01 08:22:01 -0700 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | const std::unique_ptr<Expression> fBase; |
| 39 | const int fFieldIndex; |
ethannicholas | f789b38 | 2016-08-03 12:43:36 -0700 | [diff] [blame] | 40 | const OwnerKind fOwnerKind; |
ethannicholas | b3058bd | 2016-07-01 08:22:01 -0700 | [diff] [blame] | 41 | |
| 42 | typedef Expression INHERITED; |
| 43 | }; |
| 44 | |
| 45 | } // namespace |
| 46 | |
| 47 | #endif |