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_ASTSUFFIX |
| 9 | #define SKSL_ASTSUFFIX |
| 10 | |
| 11 | #include "SkSLASTPositionNode.h" |
| 12 | #include "SkSLASTExpression.h" |
| 13 | |
| 14 | namespace SkSL { |
| 15 | |
| 16 | /** |
| 17 | * This and its subclasses represents expression suffixes, such as '[0]' or '.rgb'. Suffixes are not |
| 18 | * expressions in and of themselves; they are attached to expressions to modify them. |
| 19 | */ |
| 20 | struct ASTSuffix : public ASTPositionNode { |
| 21 | enum Kind { |
| 22 | kIndex_Kind, |
| 23 | kCall_Kind, |
| 24 | kField_Kind, |
| 25 | kPostIncrement_Kind, |
| 26 | kPostDecrement_Kind |
| 27 | }; |
| 28 | |
| 29 | ASTSuffix(Position position, Kind kind) |
| 30 | : INHERITED(position) |
| 31 | , fKind(kind) {} |
| 32 | |
Greg Daniel | 792d0f1 | 2016-11-20 14:53:35 +0000 | [diff] [blame^] | 33 | std::string description() const override { |
ethannicholas | b3058bd | 2016-07-01 08:22:01 -0700 | [diff] [blame] | 34 | switch (fKind) { |
| 35 | case kPostIncrement_Kind: |
Greg Daniel | 792d0f1 | 2016-11-20 14:53:35 +0000 | [diff] [blame^] | 36 | return "++"; |
ethannicholas | b3058bd | 2016-07-01 08:22:01 -0700 | [diff] [blame] | 37 | case kPostDecrement_Kind: |
Greg Daniel | 792d0f1 | 2016-11-20 14:53:35 +0000 | [diff] [blame^] | 38 | return "--"; |
ethannicholas | b3058bd | 2016-07-01 08:22:01 -0700 | [diff] [blame] | 39 | default: |
| 40 | ABORT("unsupported suffix operator"); |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | Kind fKind; |
| 45 | |
| 46 | typedef ASTPositionNode INHERITED; |
| 47 | }; |
| 48 | |
| 49 | } // namespace |
| 50 | |
| 51 | #endif |