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/*
* 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_MODIFIERS
#define SKSL_MODIFIERS
#include "SkSLLayout.h"
namespace SkSL {
/**
* A set of modifier keywords (in, out, uniform, etc.) appearing before a declaration.
*/
struct Modifiers {
enum Flag {
kNo_Flag = 0,
kConst_Flag = 1,
kIn_Flag = 2,
kOut_Flag = 4,
kLowp_Flag = 8,
kMediump_Flag = 16,
kHighp_Flag = 32,
kUniform_Flag = 64,
kFlat_Flag = 128,
kNoPerspective_Flag = 256,
kReadOnly_Flag = 512,
kWriteOnly_Flag = 1024,
kCoherent_Flag = 2048,
kVolatile_Flag = 4096,
kRestrict_Flag = 8192
};
Modifiers()
: fLayout(Layout())
, fFlags(0) {}
Modifiers(Layout& layout, int flags)
: fLayout(layout)
, fFlags(flags) {}
SkString description() const {
SkString result = fLayout.description();
if (fFlags & kUniform_Flag) {
result += "uniform ";
}
if (fFlags & kConst_Flag) {
result += "const ";
}
if (fFlags & kLowp_Flag) {
result += "lowp ";
}
if (fFlags & kMediump_Flag) {
result += "mediump ";
}
if (fFlags & kHighp_Flag) {
result += "highp ";
}
if (fFlags & kFlat_Flag) {
result += "flat ";
}
if (fFlags & kNoPerspective_Flag) {
result += "noperspective ";
}
if (fFlags & kReadOnly_Flag) {
result += "readonly ";
}
if (fFlags & kWriteOnly_Flag) {
result += "writeonly ";
}
if (fFlags & kCoherent_Flag) {
result += "coherent ";
}
if (fFlags & kVolatile_Flag) {
result += "volatile ";
}
if (fFlags & kRestrict_Flag) {
result += "restrict ";
}
if ((fFlags & kIn_Flag) && (fFlags & kOut_Flag)) {
result += "inout ";
} else if (fFlags & kIn_Flag) {
result += "in ";
} else if (fFlags & kOut_Flag) {
result += "out ";
}
return result;
}
bool operator==(const Modifiers& other) const {
return fLayout == other.fLayout && fFlags == other.fFlags;
}
bool operator!=(const Modifiers& other) const {
return !(*this == other);
}
Layout fLayout;
int fFlags;
};
} // namespace
#endif
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