src/sksl/ir/SkSLField.h

/*
 * 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_FIELD
#define SKSL_FIELD

#include "SkSLModifiers.h"
#include "SkSLPosition.h"
#include "SkSLSymbol.h"
#include "SkSLType.h"

namespace SkSL {

/** 
 * A symbol which should be interpreted as a field access. Fields are added to the symboltable 
 * whenever a bare reference to an identifier should refer to a struct field; in GLSL, this is the 
 * result of declaring anonymous interface blocks.
 */
struct Field : public Symbol {
    Field(Position position, std::shared_ptr<Variable> owner, int fieldIndex)
    : INHERITED(position, kField_Kind, owner->fType->fields()[fieldIndex].fName)
    , fOwner(owner)
    , fFieldIndex(fieldIndex) {}

    virtual std::string description() const override {
        return fOwner->description() + "." + fOwner->fType->fields()[fFieldIndex].fName;
    }

    const std::shared_ptr<Variable> fOwner;
    const int fFieldIndex;

    typedef Symbol INHERITED;
};

} // namespace SkSL

#endif