{{- /*
--------------------------------------------------------------------------------
Template file for use with tools/src/cmd/gen to generate function.cc

To update the generated file, run:
    ./tools/run gen

See:
* tools/src/cmd/gen for structures used by this template
* https://golang.org/pkg/text/template/ for documentation on the template syntax
--------------------------------------------------------------------------------
*/ -}}

#include "src/tint/builtin/function.h"

namespace tint::builtin {

Function ParseFunction(std::string_view name) {
{{- range Sem.Builtins  }}
    if (name == "{{.Name}}") {
        return Function::k{{PascalCase .Name}};
    }
{{- end  }}
    return Function::kNone;
}

const char* str(Function i) {
    switch (i) {
        case Function::kNone:
            return "<none>";
{{- range Sem.Builtins  }}
        case Function::k{{PascalCase .Name}}:
            return "{{.Name}}";
{{- end  }}
    }
    return "<unknown>";
}

utils::StringStream& operator<<(utils::StringStream& out, Function i) {
    out << str(i);
    return out;
}

bool IsCoarseDerivativeBuiltin(Function f) {
    return f == Function::kDpdxCoarse || f == Function::kDpdyCoarse ||
           f == Function::kFwidthCoarse;
}

bool IsFineDerivativeBuiltin(Function f) {
    return f == Function::kDpdxFine || f == Function::kDpdyFine ||
           f == Function::kFwidthFine;
}

bool IsDerivativeBuiltin(Function f) {
    return f == Function::kDpdx || f == Function::kDpdy ||
           f == Function::kFwidth || IsCoarseDerivativeBuiltin(f) ||
           IsFineDerivativeBuiltin(f);
}

bool IsTextureBuiltin(Function f) {
    return IsImageQueryBuiltin(f) ||                                 //
           f == Function::kTextureGather ||                 //
           f == Function::kTextureGatherCompare ||          //
           f == Function::kTextureLoad ||                   //
           f == Function::kTextureSample ||                 //
           f == Function::kTextureSampleBaseClampToEdge ||  //
           f == Function::kTextureSampleBias ||             //
           f == Function::kTextureSampleCompare ||          //
           f == Function::kTextureSampleCompareLevel ||     //
           f == Function::kTextureSampleGrad ||             //
           f == Function::kTextureSampleLevel ||            //
           f == Function::kTextureStore;
}

bool IsImageQueryBuiltin(Function f) {
    return f == Function::kTextureDimensions ||
           f == Function::kTextureNumLayers || f == Function::kTextureNumLevels ||
           f == Function::kTextureNumSamples;
}

bool IsDataPackingBuiltin(Function f) {
    return f == Function::kPack4X8Snorm || f == Function::kPack4X8Unorm ||
           f == Function::kPack2X16Snorm || f == Function::kPack2X16Unorm ||
           f == Function::kPack2X16Float;
}

bool IsDataUnpackingBuiltin(Function f) {
    return f == Function::kUnpack4X8Snorm || f == Function::kUnpack4X8Unorm ||
           f == Function::kUnpack2X16Snorm || f == Function::kUnpack2X16Unorm ||
           f == Function::kUnpack2X16Float;
}

bool IsBarrierBuiltin(Function f) {
    return f == Function::kWorkgroupBarrier || f == Function::kStorageBarrier;
}

bool IsAtomicBuiltin(Function f) {
    return f == Function::kAtomicLoad || f == Function::kAtomicStore ||
           f == Function::kAtomicAdd || f == Function::kAtomicSub ||
           f == Function::kAtomicMax || f == Function::kAtomicMin ||
           f == Function::kAtomicAnd || f == Function::kAtomicOr ||
           f == Function::kAtomicXor || f == Function::kAtomicExchange ||
           f == Function::kAtomicCompareExchangeWeak;
}

bool IsDP4aBuiltin(Function f) {
    return f == Function::kDot4I8Packed || f == Function::kDot4U8Packed;
}

bool HasSideEffects(Function f) {
    switch (f) {
        case Function::kAtomicAdd:
        case Function::kAtomicAnd:
        case Function::kAtomicCompareExchangeWeak:
        case Function::kAtomicExchange:
        case Function::kAtomicMax:
        case Function::kAtomicMin:
        case Function::kAtomicOr:
        case Function::kAtomicStore:
        case Function::kAtomicSub:
        case Function::kAtomicXor:
        case Function::kTextureStore:
        case Function::kWorkgroupUniformLoad:
            return true;
        default:
            break;
    }
    return false;
}

}  // namespace tint::builtin