src/sksl/ast/SkSLASTPrecision.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_ASTPRECISION
#define SKSL_ASTPRECISION

#include "SkSLASTDeclaration.h"
#include "../ir/SkSLModifiers.h"

namespace SkSL {

/**
 * Represents a precision declaration (e.g. 'precision mediump float;').
 */
struct ASTPrecision : public ASTDeclaration {
    // FIXME handle the type
    ASTPrecision(Position position, Modifiers::Flag precision)
    : INHERITED(position, kPrecision_Kind)
    , fPrecision(precision) {}

    std::string description() const {
        switch (fPrecision) {
            case Modifiers::kLowp_Flag: return "precision lowp float;";
            case Modifiers::kMediump_Flag: return "precision mediump float;";
            case Modifiers::kHighp_Flag: return "precision highp float;";
            default: 
                ASSERT(false); 
                return "<error>";
        }
        ASSERT(false);
        return "<error>";
    }

    const Modifiers::Flag fPrecision;

    typedef ASTDeclaration INHERITED;
};

} // namespace

#endif