Line data    Source code

       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_ASTINDEXSUFFIX
       9             : #define SKSL_ASTINDEXSUFFIX
      10             : 
      11             : #include "SkSLASTExpression.h"
      12             : #include "SkSLASTSuffix.h"
      13             : 
      14             : namespace SkSL {
      15             : 
      16             : /**
      17             :  * A bracketed expression, as in '[0]', indicating an array access. Empty brackets (as occur in
      18             :  * 'float[](5, 6)' are represented with a null fExpression.
      19             :  */
      20           0 : struct ASTIndexSuffix : public ASTSuffix {
      21           0 :     ASTIndexSuffix(Position position)
      22           0 :     : INHERITED(position, ASTSuffix::kIndex_Kind)
      23           0 :     , fExpression(nullptr) {}
      24             : 
      25           0 :     ASTIndexSuffix(std::unique_ptr<ASTExpression> expression)
      26           0 :     : INHERITED(expression ? expression->fPosition : Position(), ASTSuffix::kIndex_Kind)
      27           0 :     , fExpression(std::move(expression)) {}
      28             : 
      29           0 :     String description() const override {
      30           0 :         if (fExpression) {
      31           0 :             return "[" + fExpression->description() + "]";
      32             :         } else {
      33           0 :             return String("[]");
      34             :         }
      35             :     }
      36             : 
      37             :     // may be null
      38             :     std::unique_ptr<ASTExpression> fExpression;
      39             : 
      40             :     typedef ASTSuffix INHERITED;
      41             : };
      42             : 
      43             : } // namespace
      44             : 
      45             : #endif