/*
 * Copyright 2021 Google LLC
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "src/sksl/SkSLBuiltinTypes.h"

#include "include/private/SkSLModifiers.h"
#include "src/sksl/SkSLErrorReporter.h"
#include "src/sksl/ir/SkSLExpression.h"
#include "src/sksl/spirv.h"

namespace SkSL {

/** Create a scalar type. */
std::unique_ptr<Type> BuiltinTypes::MakeScalarType(const char* name,
                                                   const char* abbrev,
                                                   Type::NumberKind numberKind,
                                                   int8_t priority,
                                                   int8_t bitWidth) {
    return std::unique_ptr<Type>(new Type(name, abbrev, numberKind, priority, bitWidth));
}

/** Create a type for literal scalars. */
std::unique_ptr<Type> BuiltinTypes::MakeLiteralType(const char* name,
                                                    const Type& scalarType,
                                                    int8_t priority) {
    return std::unique_ptr<Type>(new Type(name, scalarType, priority));
}

/** Create a vector type. */
std::unique_ptr<Type> BuiltinTypes::MakeVectorType(const char* name,
                                                   const char* abbrev,
                                                   const Type& componentType,
                                                   int columns) {
    return std::unique_ptr<Type>(new Type(name, abbrev, Type::TypeKind::kVector,
                                          componentType, columns));
}

/**
 * Create a generic type which maps to the listed types--e.g. $genType is a generic type which
 * can match float, float2, float3 or float4.
 */
std::unique_ptr<Type> BuiltinTypes::MakeGenericType(const char* name,
                                                    std::vector<const Type*> types) {
    return std::unique_ptr<Type>(new Type(name, std::move(types)));
}

/** Create a matrix type. */
std::unique_ptr<Type> BuiltinTypes::MakeMatrixType(const char* name,
                                                   const char* abbrev,
                                                   const Type& componentType,
                                                   int columns,
                                                   int8_t rows) {
    return std::unique_ptr<Type>(new Type(name, abbrev, componentType, columns, rows));
}

/** Create a texture type. */
std::unique_ptr<Type> BuiltinTypes::MakeTextureType(const char* name,
                                                    SpvDim_ dimensions,
                                                    bool isDepth,
                                                    bool isArrayedTexture,
                                                    bool isMultisampled,
                                                    bool isSampled) {
    return std::unique_ptr<Type>(
            new Type(name, dimensions, isDepth, isArrayedTexture, isMultisampled, isSampled));
}

/** Create a sampler type. */
std::unique_ptr<Type> BuiltinTypes::MakeSamplerType(const char* name, const Type& textureType) {
    return std::unique_ptr<Type>(new Type(name, textureType));
}

/**
 * Create a "special" type with the given name, abbreviation, and TypeKind.
 */
std::unique_ptr<Type> BuiltinTypes::MakeSpecialType(const char* name,
                                                    const char* abbrev,
                                                    Type::TypeKind typeKind) {
    return std::unique_ptr<Type>(new Type(name, abbrev, typeKind));
}

/**
 * Initializes the core SkSL types.
 */
BuiltinTypes::BuiltinTypes()
        : fFloat(MakeScalarType(
                  "float", "f", Type::NumberKind::kFloat, /*priority=*/10, /*bitWidth=*/32))
        , fFloat2(MakeVectorType("float2", "f2", *fFloat, /*columns=*/2))
        , fFloat3(MakeVectorType("float3", "f3", *fFloat, /*columns=*/3))
        , fFloat4(MakeVectorType("float4", "f4", *fFloat, /*columns=*/4))
        , fHalf(MakeScalarType(
                  "half", "h", Type::NumberKind::kFloat, /*priority=*/9, /*bitWidth=*/16))
        , fHalf2(MakeVectorType("half2", "h2", *fHalf, /*columns=*/2))
        , fHalf3(MakeVectorType("half3", "h3", *fHalf, /*columns=*/3))
        , fHalf4(MakeVectorType("half4", "h4", *fHalf, /*columns=*/4))
        , fInt(MakeScalarType(
                  "int", "i", Type::NumberKind::kSigned, /*priority=*/7, /*bitWidth=*/32))
        , fInt2(MakeVectorType("int2", "i2", *fInt, /*columns=*/2))
        , fInt3(MakeVectorType("int3", "i3", *fInt, /*columns=*/3))
        , fInt4(MakeVectorType("int4", "i4", *fInt, /*columns=*/4))
        , fUInt(MakeScalarType(
                  "uint", "I", Type::NumberKind::kUnsigned, /*priority=*/6, /*bitWidth=*/32))
        , fUInt2(MakeVectorType("uint2", "I2", *fUInt, /*columns=*/2))
        , fUInt3(MakeVectorType("uint3", "I3", *fUInt, /*columns=*/3))
        , fUInt4(MakeVectorType("uint4", "I4", *fUInt, /*columns=*/4))
        , fShort(MakeScalarType(
                  "short", "s", Type::NumberKind::kSigned, /*priority=*/4, /*bitWidth=*/16))
        , fShort2(MakeVectorType("short2", "s2", *fShort, /*columns=*/2))
        , fShort3(MakeVectorType("short3", "s3", *fShort, /*columns=*/3))
        , fShort4(MakeVectorType("short4", "s4", *fShort, /*columns=*/4))
        , fUShort(MakeScalarType(
                  "ushort", "S", Type::NumberKind::kUnsigned, /*priority=*/3, /*bitWidth=*/16))
        , fUShort2(MakeVectorType("ushort2", "S2", *fUShort, /*columns=*/2))
        , fUShort3(MakeVectorType("ushort3", "S3", *fUShort, /*columns=*/3))
        , fUShort4(MakeVectorType("ushort4", "S4", *fUShort, /*columns=*/4))
        , fBool(MakeScalarType(
                  "bool", "b", Type::NumberKind::kBoolean, /*priority=*/0, /*bitWidth=*/1))
        , fBool2(MakeVectorType("bool2", "b2", *fBool, /*columns=*/2))
        , fBool3(MakeVectorType("bool3", "b3", *fBool, /*columns=*/3))
        , fBool4(MakeVectorType("bool4", "b4", *fBool, /*columns=*/4))
        , fInvalid(MakeSpecialType("<INVALID>", "O", Type::TypeKind::kOther))
        , fVoid(MakeSpecialType("void", "v", Type::TypeKind::kVoid))
        , fFloatLiteral(MakeLiteralType("$floatLiteral", *fFloat, /*priority=*/8))
        , fIntLiteral(MakeLiteralType("$intLiteral", *fInt, /*priority=*/5))
        , fFloat2x2(MakeMatrixType("float2x2", "f22", *fFloat, /*columns=*/2, /*rows=*/2))
        , fFloat2x3(MakeMatrixType("float2x3", "f23", *fFloat, /*columns=*/2, /*rows=*/3))
        , fFloat2x4(MakeMatrixType("float2x4", "f24", *fFloat, /*columns=*/2, /*rows=*/4))
        , fFloat3x2(MakeMatrixType("float3x2", "f32", *fFloat, /*columns=*/3, /*rows=*/2))
        , fFloat3x3(MakeMatrixType("float3x3", "f33", *fFloat, /*columns=*/3, /*rows=*/3))
        , fFloat3x4(MakeMatrixType("float3x4", "f34", *fFloat, /*columns=*/3, /*rows=*/4))
        , fFloat4x2(MakeMatrixType("float4x2", "f42", *fFloat, /*columns=*/4, /*rows=*/2))
        , fFloat4x3(MakeMatrixType("float4x3", "f43", *fFloat, /*columns=*/4, /*rows=*/3))
        , fFloat4x4(MakeMatrixType("float4x4", "f44", *fFloat, /*columns=*/4, /*rows=*/4))
        , fHalf2x2(MakeMatrixType("half2x2", "h22", *fHalf, /*columns=*/2, /*rows=*/2))
        , fHalf2x3(MakeMatrixType("half2x3", "h23", *fHalf, /*columns=*/2, /*rows=*/3))
        , fHalf2x4(MakeMatrixType("half2x4", "h24", *fHalf, /*columns=*/2, /*rows=*/4))
        , fHalf3x2(MakeMatrixType("half3x2", "h32", *fHalf, /*columns=*/3, /*rows=*/2))
        , fHalf3x3(MakeMatrixType("half3x3", "h33", *fHalf, /*columns=*/3, /*rows=*/3))
        , fHalf3x4(MakeMatrixType("half3x4", "h34", *fHalf, /*columns=*/3, /*rows=*/4))
        , fHalf4x2(MakeMatrixType("half4x2", "h42", *fHalf, /*columns=*/4, /*rows=*/2))
        , fHalf4x3(MakeMatrixType("half4x3", "h43", *fHalf, /*columns=*/4, /*rows=*/3))
        , fHalf4x4(MakeMatrixType("half4x4", "h44", *fHalf, /*columns=*/4, /*rows=*/4))
        , fTexture1D(MakeTextureType("texture1D",
                                     SpvDim1D,
                                     /*isDepth=*/false,
                                     /*isArrayedTexture=*/false,
                                     /*isMultisampled=*/false,
                                     /*isSampled=*/true))
        , fTexture2D(MakeTextureType("texture2D",
                                     SpvDim2D,
                                     /*isDepth=*/false,
                                     /*isArrayedTexture=*/false,
                                     /*isMultisampled=*/false,
                                     /*isSampled=*/true))
        , fTexture3D(MakeTextureType("texture3D",
                                     SpvDim3D,
                                     /*isDepth=*/false,
                                     /*isArrayedTexture=*/false,
                                     /*isMultisampled=*/false,
                                     /*isSampled=*/true))
        , fTextureExternalOES(MakeTextureType("textureExternalOES",
                                              SpvDim2D,
                                              /*isDepth=*/false,
                                              /*isArrayedTexture=*/false,
                                              /*isMultisampled=*/false,
                                              /*isSampled=*/true))
        , fTextureCube(MakeTextureType("textureCube",
                                       SpvDimCube,
                                       /*isDepth=*/false,
                                       /*isArrayedTexture=*/false,
                                       /*isMultisampled=*/false,
                                       /*isSampled=*/true))
        , fTexture2DRect(MakeTextureType("texture2DRect",
                                         SpvDimRect,
                                         /*isDepth=*/false,
                                         /*isArrayedTexture=*/false,
                                         /*isMultisampled=*/false,
                                         /*isSampled=*/true))
        , fITexture2D(MakeTextureType("itexture2D",
                                      SpvDim2D,
                                      /*isDepth=*/false,
                                      /*isArrayedTexture=*/false,
                                      /*isMultisampled=*/false,
                                      /*isSampled=*/true))
        , fSampler1D(MakeSamplerType("sampler1D", *fTexture1D))
        , fSampler2D(MakeSamplerType("sampler2D", *fTexture2D))
        , fSampler3D(MakeSamplerType("sampler3D", *fTexture3D))
        , fSamplerExternalOES(MakeSamplerType("samplerExternalOES", *fTextureExternalOES))
        , fSampler2DRect(MakeSamplerType("sampler2DRect", *fTexture2DRect))

        , fISampler2D(MakeSamplerType("isampler2D", *fITexture2D))

        , fSampler(MakeSpecialType("sampler", "ss", Type::TypeKind::kSeparateSampler))

        , fSubpassInput(MakeTextureType("subpassInput",
                                        SpvDimSubpassData,
                                        /*isDepth=*/false,
                                        /*isArrayedTexture=*/false,
                                        /*isMultisampled=*/false,
                                        /*isSampled=*/false))
        , fSubpassInputMS(MakeTextureType("subpassInputMS",
                                          SpvDimSubpassData,
                                          /*isDepth=*/false,
                                          /*isArrayedTexture=*/false,
                                          /*isMultisampled=*/true,
                                          /*isSampled=*/false))

        , fGenType(MakeGenericType("$genType",
                                   {fFloat.get(), fFloat2.get(), fFloat3.get(), fFloat4.get()}))
        , fGenHType(MakeGenericType("$genHType",
                                    {fHalf.get(), fHalf2.get(), fHalf3.get(), fHalf4.get()}))
        , fGenIType(
                  MakeGenericType("$genIType", {fInt.get(), fInt2.get(), fInt3.get(), fInt4.get()}))
        , fGenUType(MakeGenericType("$genUType",
                                    {fUInt.get(), fUInt2.get(), fUInt3.get(), fUInt4.get()}))
        , fGenBType(MakeGenericType("$genBType",
                                    {fBool.get(), fBool2.get(), fBool3.get(), fBool4.get()}))
        , fMat(MakeGenericType("$mat",
                               {fFloat2x2.get(), fFloat2x3.get(), fFloat2x4.get(), fFloat3x2.get(),
                                fFloat3x3.get(), fFloat3x4.get(), fFloat4x2.get(), fFloat4x3.get(),
                                fFloat4x4.get()}))
        , fHMat(MakeGenericType(
                  "$hmat",
                  {fHalf2x2.get(), fHalf2x3.get(), fHalf2x4.get(), fHalf3x2.get(), fHalf3x3.get(),
                   fHalf3x4.get(), fHalf4x2.get(), fHalf4x3.get(), fHalf4x4.get()}))
        , fSquareMat(MakeGenericType("$squareMat",
                                     {fFloat2x2.get(), fFloat3x3.get(), fFloat4x4.get()}))
        , fSquareHMat(
                  MakeGenericType("$squareHMat", {fHalf2x2.get(), fHalf3x3.get(), fHalf4x4.get()}))
        , fVec(MakeGenericType("$vec",
                               {fInvalid.get(), fFloat2.get(), fFloat3.get(), fFloat4.get()}))
        , fHVec(MakeGenericType("$hvec",
                                {fInvalid.get(), fHalf2.get(), fHalf3.get(), fHalf4.get()}))
        , fIVec(MakeGenericType("$ivec", {fInvalid.get(), fInt2.get(), fInt3.get(), fInt4.get()}))
        , fUVec(MakeGenericType("$uvec",
                                {fInvalid.get(), fUInt2.get(), fUInt3.get(), fUInt4.get()}))
        , fSVec(MakeGenericType("$svec",
                                {fInvalid.get(), fShort2.get(), fShort3.get(), fShort4.get()}))
        , fUSVec(MakeGenericType("$usvec",
                                 {fInvalid.get(), fUShort2.get(), fUShort3.get(), fUShort4.get()}))
        , fBVec(MakeGenericType("$bvec",
                                {fInvalid.get(), fBool2.get(), fBool3.get(), fBool4.get()}))
        , fSkCaps(MakeSpecialType("$sk_Caps", "O", Type::TypeKind::kOther))
        , fFragmentProcessor(MakeSpecialType("fragmentProcessor", "fp",
                                             Type::TypeKind::kFragmentProcessor))
        , fColorFilter(MakeSpecialType("colorFilter", "CF", Type::TypeKind::kColorFilter))
        , fShader(MakeSpecialType("shader", "SH", Type::TypeKind::kShader)) {}

}  // namespace SkSL