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// Copyright 2021 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/transform/renamer.h"
#include <memory>
#include <unordered_set>
#include <utility>
#include "src/program_builder.h"
#include "src/sem/call.h"
#include "src/sem/member_accessor_expression.h"
TINT_INSTANTIATE_TYPEINFO(tint::transform::Renamer);
TINT_INSTANTIATE_TYPEINFO(tint::transform::Renamer::Data);
TINT_INSTANTIATE_TYPEINFO(tint::transform::Renamer::Config);
namespace tint {
namespace transform {
namespace {
// This list is used for a binary search and must be kept in sorted order.
const char* kReservedKeywordsGLSL[] = {
"active",
"asm",
"atomic_uint",
"attribute",
"bool",
"break",
"buffer",
"bvec2",
"bvec3",
"bvec4",
"case",
"cast",
"centroid",
"class",
"coherent",
"common",
"const",
"continue",
"default",
"discard",
"dmat2",
"dmat2x2",
"dmat2x3",
"dmat2x4",
"dmat3",
"dmat3x2",
"dmat3x3",
"dmat3x4",
"dmat4",
"dmat4x2",
"dmat4x3",
"dmat4x4",
"do",
"double",
"dvec2",
"dvec3",
"dvec4",
"else",
"enum",
"extern",
"external",
"false",
"filter",
"fixed",
"flat",
"float",
"for",
"fvec2",
"fvec3",
"fvec4",
"gl_BaseInstance",
"gl_BaseVertex",
"gl_ClipDistance",
"gl_DepthRangeParameters",
"gl_DrawID",
"gl_FragCoord",
"gl_FragDepth",
"gl_FrontFacing",
"gl_GlobalInvocationID",
"gl_InstanceID",
"gl_LocalInvocationID",
"gl_LocalInvocationIndex",
"gl_NumSamples",
"gl_NumWorkGroups",
"gl_PerVertex",
"gl_PointCoord",
"gl_PointSize",
"gl_Position",
"gl_PrimitiveID",
"gl_SampleID",
"gl_SampleMask",
"gl_SampleMaskIn",
"gl_SamplePosition",
"gl_VertexID",
"gl_WorkGroupID",
"gl_WorkGroupSize",
"goto",
"half",
"highp",
"hvec2",
"hvec3",
"hvec4",
"if",
"iimage1D",
"iimage1DArray",
"iimage2D",
"iimage2DArray",
"iimage2DMS",
"iimage2DMSArray",
"iimage2DRect",
"iimage3D",
"iimageBuffer",
"iimageCube",
"iimageCubeArray",
"image1D",
"image1DArray",
"image2D",
"image2DArray",
"image2DMS",
"image2DMSArray",
"image2DRect",
"image3D",
"imageBuffer",
"imageCube",
"imageCubeArray",
"in",
"inline",
"inout",
"input",
"int",
"interface",
"invariant",
"isampler1D",
"isampler1DArray",
"isampler2D",
"isampler2DArray",
"isampler2DMS",
"isampler2DMSArray",
"isampler2DRect",
"isampler3D",
"isamplerBuffer",
"isamplerCube",
"isamplerCubeArray",
"ivec2",
"ivec3",
"ivec4",
"layout",
"long",
"lowp",
"main",
"mat2",
"mat2x2",
"mat2x3",
"mat2x4",
"mat3",
"mat3x2",
"mat3x3",
"mat3x4",
"mat4",
"mat4x2",
"mat4x3",
"mat4x4",
"mediump",
"namespace",
"noinline",
"noperspective",
"out",
"output",
"partition",
"patch",
"precise",
"precision",
"public",
"readonly",
"resource",
"restrict",
"return",
"sample",
"sampler1D",
"sampler1DArray",
"sampler1DArrayShadow",
"sampler1DShadow",
"sampler2D",
"sampler2DArray",
"sampler2DArrayShadow",
"sampler2DMS",
"sampler2DMSArray",
"sampler2DRect",
"sampler2DRectShadow",
"sampler2DShadow",
"sampler3D",
"sampler3DRect",
"samplerBuffer",
"samplerCube",
"samplerCubeArray",
"samplerCubeArrayShadow",
"samplerCubeShadow",
"shared",
"short",
"sizeof",
"smooth",
"static",
"struct",
"subroutine",
"superp",
"switch",
"template",
"this",
"true",
"typedef",
"uimage1D",
"uimage1DArray",
"uimage2D",
"uimage2DArray",
"uimage2DMS",
"uimage2DMSArray",
"uimage2DRect",
"uimage3D",
"uimageBuffer",
"uimageCube",
"uimageCubeArray",
"uint",
"uniform",
"union",
"unsigned",
"usampler1D",
"usampler1DArray",
"usampler2D",
"usampler2DArray",
"usampler2DMS",
"usampler2DMSArray",
"usampler2DRect",
"usampler3D",
"usamplerBuffer",
"usamplerCube",
"usamplerCubeArray",
"using",
"uvec2",
"uvec3",
"uvec4",
"varying",
"vec2",
"vec3",
"vec4",
"void",
"volatile",
"while",
"writeonly",
};
// This list is used for a binary search and must be kept in sorted order.
const char* kReservedKeywordsHLSL[] = {
"AddressU",
"AddressV",
"AddressW",
"AllMemoryBarrier",
"AllMemoryBarrierWithGroupSync",
"AppendStructuredBuffer",
"BINORMAL",
"BLENDINDICES",
"BLENDWEIGHT",
"BlendState",
"BorderColor",
"Buffer",
"ByteAddressBuffer",
"COLOR",
"CheckAccessFullyMapped",
"ComparisonFunc",
"CompileShader",
"ComputeShader",
"ConsumeStructuredBuffer",
"D3DCOLORtoUBYTE4",
"DEPTH",
"DepthStencilState",
"DepthStencilView",
"DeviceMemoryBarrier",
"DeviceMemroyBarrierWithGroupSync",
"DomainShader",
"EvaluateAttributeAtCentroid",
"EvaluateAttributeAtSample",
"EvaluateAttributeSnapped",
"FOG",
"Filter",
"GeometryShader",
"GetRenderTargetSampleCount",
"GetRenderTargetSamplePosition",
"GroupMemoryBarrier",
"GroupMemroyBarrierWithGroupSync",
"Hullshader",
"InputPatch",
"InterlockedAdd",
"InterlockedAnd",
"InterlockedCompareExchange",
"InterlockedCompareStore",
"InterlockedExchange",
"InterlockedMax",
"InterlockedMin",
"InterlockedOr",
"InterlockedXor",
"LineStream",
"MaxAnisotropy",
"MaxLOD",
"MinLOD",
"MipLODBias",
"NORMAL",
"NULL",
"Normal",
"OutputPatch",
"POSITION",
"POSITIONT",
"PSIZE",
"PixelShader",
"PointStream",
"Process2DQuadTessFactorsAvg",
"Process2DQuadTessFactorsMax",
"Process2DQuadTessFactorsMin",
"ProcessIsolineTessFactors",
"ProcessQuadTessFactorsAvg",
"ProcessQuadTessFactorsMax",
"ProcessQuadTessFactorsMin",
"ProcessTriTessFactorsAvg",
"ProcessTriTessFactorsMax",
"ProcessTriTessFactorsMin",
"RWBuffer",
"RWByteAddressBuffer",
"RWStructuredBuffer",
"RWTexture1D",
"RWTexture1DArray",
"RWTexture2D",
"RWTexture2DArray",
"RWTexture3D",
"RasterizerState",
"RenderTargetView",
"SV_ClipDistance",
"SV_Coverage",
"SV_CullDistance",
"SV_Depth",
"SV_DepthGreaterEqual",
"SV_DepthLessEqual",
"SV_DispatchThreadID",
"SV_DomainLocation",
"SV_GSInstanceID",
"SV_GroupID",
"SV_GroupIndex",
"SV_GroupThreadID",
"SV_InnerCoverage",
"SV_InsideTessFactor",
"SV_InstanceID",
"SV_IsFrontFace",
"SV_OutputControlPointID",
"SV_Position",
"SV_PrimitiveID",
"SV_RenderTargetArrayIndex",
"SV_SampleIndex",
"SV_StencilRef",
"SV_Target",
"SV_TessFactor",
"SV_VertexArrayIndex",
"SV_VertexID",
"Sampler",
"Sampler1D",
"Sampler2D",
"Sampler3D",
"SamplerCUBE",
"SamplerComparisonState",
"SamplerState",
"StructuredBuffer",
"TANGENT",
"TESSFACTOR",
"TEXCOORD",
"Texcoord",
"Texture",
"Texture1D",
"Texture1DArray",
"Texture2D",
"Texture2DArray",
"Texture2DMS",
"Texture2DMSArray",
"Texture3D",
"TextureCube",
"TextureCubeArray",
"TriangleStream",
"VFACE",
"VPOS",
"VertexShader",
"abort",
"allow_uav_condition",
"asdouble",
"asfloat",
"asint",
"asm",
"asm_fragment",
"asuint",
"auto",
"bool",
"bool1",
"bool1x1",
"bool1x2",
"bool1x3",
"bool1x4",
"bool2",
"bool2x1",
"bool2x2",
"bool2x3",
"bool2x4",
"bool3",
"bool3x1",
"bool3x2",
"bool3x3",
"bool3x4",
"bool4",
"bool4x1",
"bool4x2",
"bool4x3",
"bool4x4",
"branch",
"break",
"call",
"case",
"catch",
"cbuffer",
"centroid",
"char",
"class",
"clip",
"column_major",
"compile",
"compile_fragment",
"const",
"const_cast",
"continue",
"countbits",
"ddx",
"ddx_coarse",
"ddx_fine",
"ddy",
"ddy_coarse",
"ddy_fine",
"default",
"degrees",
"delete",
"discard",
"do",
"double",
"double1",
"double1x1",
"double1x2",
"double1x3",
"double1x4",
"double2",
"double2x1",
"double2x2",
"double2x3",
"double2x4",
"double3",
"double3x1",
"double3x2",
"double3x3",
"double3x4",
"double4",
"double4x1",
"double4x2",
"double4x3",
"double4x4",
"dst",
"dword",
"dword1",
"dword1x1",
"dword1x2",
"dword1x3",
"dword1x4",
"dword2",
"dword2x1",
"dword2x2",
"dword2x3",
"dword2x4",
"dword3",
"dword3x1",
"dword3x2",
"dword3x3",
"dword3x4",
"dword4",
"dword4x1",
"dword4x2",
"dword4x3",
"dword4x4",
"dynamic_cast",
"else",
"enum",
"errorf",
"explicit",
"export",
"extern",
"f16to32",
"f32tof16",
"false",
"fastopt",
"firstbithigh",
"firstbitlow",
"flatten",
"float",
"float1",
"float1x1",
"float1x2",
"float1x3",
"float1x4",
"float2",
"float2x1",
"float2x2",
"float2x3",
"float2x4",
"float3",
"float3x1",
"float3x2",
"float3x3",
"float3x4",
"float4",
"float4x1",
"float4x2",
"float4x3",
"float4x4",
"fmod",
"for",
"forcecase",
"frac",
"friend",
"fxgroup",
"goto",
"groupshared",
"half",
"half1",
"half1x1",
"half1x2",
"half1x3",
"half1x4",
"half2",
"half2x1",
"half2x2",
"half2x3",
"half2x4",
"half3",
"half3x1",
"half3x2",
"half3x3",
"half3x4",
"half4",
"half4x1",
"half4x2",
"half4x3",
"half4x4",
"if",
"in",
"inline",
"inout",
"int",
"int1",
"int1x1",
"int1x2",
"int1x3",
"int1x4",
"int2",
"int2x1",
"int2x2",
"int2x3",
"int2x4",
"int3",
"int3x1",
"int3x2",
"int3x3",
"int3x4",
"int4",
"int4x1",
"int4x2",
"int4x3",
"int4x4",
"interface",
"isfinite",
"isinf",
"isnan",
"lerp",
"line",
"lineadj",
"linear",
"lit",
"log10",
"long",
"loop",
"mad",
"matrix",
"min10float",
"min10float1",
"min10float1x1",
"min10float1x2",
"min10float1x3",
"min10float1x4",
"min10float2",
"min10float2x1",
"min10float2x2",
"min10float2x3",
"min10float2x4",
"min10float3",
"min10float3x1",
"min10float3x2",
"min10float3x3",
"min10float3x4",
"min10float4",
"min10float4x1",
"min10float4x2",
"min10float4x3",
"min10float4x4",
"min12int",
"min12int1",
"min12int1x1",
"min12int1x2",
"min12int1x3",
"min12int1x4",
"min12int2",
"min12int2x1",
"min12int2x2",
"min12int2x3",
"min12int2x4",
"min12int3",
"min12int3x1",
"min12int3x2",
"min12int3x3",
"min12int3x4",
"min12int4",
"min12int4x1",
"min12int4x2",
"min12int4x3",
"min12int4x4",
"min16float",
"min16float1",
"min16float1x1",
"min16float1x2",
"min16float1x3",
"min16float1x4",
"min16float2",
"min16float2x1",
"min16float2x2",
"min16float2x3",
"min16float2x4",
"min16float3",
"min16float3x1",
"min16float3x2",
"min16float3x3",
"min16float3x4",
"min16float4",
"min16float4x1",
"min16float4x2",
"min16float4x3",
"min16float4x4",
"min16int",
"min16int1",
"min16int1x1",
"min16int1x2",
"min16int1x3",
"min16int1x4",
"min16int2",
"min16int2x1",
"min16int2x2",
"min16int2x3",
"min16int2x4",
"min16int3",
"min16int3x1",
"min16int3x2",
"min16int3x3",
"min16int3x4",
"min16int4",
"min16int4x1",
"min16int4x2",
"min16int4x3",
"min16int4x4",
"min16uint",
"min16uint1",
"min16uint1x1",
"min16uint1x2",
"min16uint1x3",
"min16uint1x4",
"min16uint2",
"min16uint2x1",
"min16uint2x2",
"min16uint2x3",
"min16uint2x4",
"min16uint3",
"min16uint3x1",
"min16uint3x2",
"min16uint3x3",
"min16uint3x4",
"min16uint4",
"min16uint4x1",
"min16uint4x2",
"min16uint4x3",
"min16uint4x4",
"msad4",
"mul",
"mutable",
"namespace",
"new",
"nointerpolation",
"noise",
"noperspective",
"numthreads",
"operator",
"out",
"packoffset",
"pass",
"pixelfragment",
"pixelshader",
"point",
"precise",
"printf",
"private",
"protected",
"public",
"radians",
"rcp",
"refract",
"register",
"reinterpret_cast",
"return",
"row_major",
"rsqrt",
"sample",
"sampler",
"sampler1D",
"sampler2D",
"sampler3D",
"samplerCUBE",
"sampler_state",
"saturate",
"shared",
"short",
"signed",
"sincos",
"sizeof",
"snorm",
"stateblock",
"stateblock_state",
"static",
"static_cast",
"string",
"struct",
"switch",
"tbuffer",
"technique",
"technique10",
"technique11",
"template",
"tex1D",
"tex1Dbias",
"tex1Dgrad",
"tex1Dlod",
"tex1Dproj",
"tex2D",
"tex2Dbias",
"tex2Dgrad",
"tex2Dlod",
"tex2Dproj",
"tex3D",
"tex3Dbias",
"tex3Dgrad",
"tex3Dlod",
"tex3Dproj",
"texCUBE",
"texCUBEbias",
"texCUBEgrad",
"texCUBElod",
"texCUBEproj",
"texture",
"texture1D",
"texture1DArray",
"texture2D",
"texture2DArray",
"texture2DMS",
"texture2DMSArray",
"texture3D",
"textureCube",
"textureCubeArray",
"this",
"throw",
"transpose",
"triangle",
"triangleadj",
"true",
"try",
"typedef",
"typename",
"uint",
"uint1",
"uint1x1",
"uint1x2",
"uint1x3",
"uint1x4",
"uint2",
"uint2x1",
"uint2x2",
"uint2x3",
"uint2x4",
"uint3",
"uint3x1",
"uint3x2",
"uint3x3",
"uint3x4",
"uint4",
"uint4x1",
"uint4x2",
"uint4x3",
"uint4x4",
"uniform",
"union",
"unorm",
"unroll",
"unsigned",
"using",
"vector",
"vertexfragment",
"vertexshader",
"virtual",
"void",
"volatile",
"while",
};
// This list is used for a binary search and must be kept in sorted order.
const char* kReservedKeywordsMSL[] = {
"HUGE_VALF",
"HUGE_VALH",
"INFINITY",
"MAXFLOAT",
"MAXHALF",
"M_1_PI_F",
"M_1_PI_H",
"M_2_PI_F",
"M_2_PI_H",
"M_2_SQRTPI_F",
"M_2_SQRTPI_H",
"M_E_F",
"M_E_H",
"M_LN10_F",
"M_LN10_H",
"M_LN2_F",
"M_LN2_H",
"M_LOG10E_F",
"M_LOG10E_H",
"M_LOG2E_F",
"M_LOG2E_H",
"M_PI_2_F",
"M_PI_2_H",
"M_PI_4_F",
"M_PI_4_H",
"M_PI_F",
"M_PI_H",
"M_SQRT1_2_F",
"M_SQRT1_2_H",
"M_SQRT2_F",
"M_SQRT2_H",
"NAN",
"access",
"alignas",
"alignof",
"and",
"and_eq",
"array",
"array_ref",
"as_type",
"asm",
"atomic",
"atomic_bool",
"atomic_int",
"atomic_uint",
"auto",
"bitand",
"bitor",
"bool",
"bool2",
"bool3",
"bool4",
"break",
"buffer",
"case",
"catch",
"char",
"char16_t",
"char2",
"char3",
"char32_t",
"char4",
"class",
"compl",
"const",
"const_cast",
"const_reference",
"constant",
"constexpr",
"continue",
"decltype",
"default",
"delete",
"depth2d",
"depth2d_array",
"depth2d_ms",
"depth2d_ms_array",
"depthcube",
"depthcube_array",
"device",
"discard_fragment",
"do",
"double",
"dynamic_cast",
"else",
"enum",
"explicit",
"extern",
"false",
"final",
"float",
"float2",
"float2x2",
"float2x3",
"float2x4",
"float3",
"float3x2",
"float3x3",
"float3x4",
"float4",
"float4x2",
"float4x3",
"float4x4",
"for",
"fragment",
"friend",
"goto",
"half",
"half2",
"half2x2",
"half2x3",
"half2x4",
"half3",
"half3x2",
"half3x3",
"half3x4",
"half4",
"half4x2",
"half4x3",
"half4x4",
"if",
"imageblock",
"infinity",
"inline",
"int",
"int16_t",
"int2",
"int3",
"int32_t",
"int4",
"int64_t",
"int8_t",
"kernel",
"long",
"long2",
"long3",
"long4",
"main",
"matrix",
"metal",
"mutable",
"namespace",
"new",
"noexcept",
"not",
"not_eq",
"nullptr",
"operator",
"or",
"or_eq",
"override",
"packed_bool2",
"packed_bool3",
"packed_bool4",
"packed_char2",
"packed_char3",
"packed_char4",
"packed_float2",
"packed_float3",
"packed_float4",
"packed_half2",
"packed_half3",
"packed_half4",
"packed_int2",
"packed_int3",
"packed_int4",
"packed_short2",
"packed_short3",
"packed_short4",
"packed_uchar2",
"packed_uchar3",
"packed_uchar4",
"packed_uint2",
"packed_uint3",
"packed_uint4",
"packed_ushort2",
"packed_ushort3",
"packed_ushort4",
"patch_control_point",
"private",
"protected",
"ptrdiff_t",
"public",
"r16snorm",
"r16unorm",
"r8unorm",
"reference",
"register",
"reinterpret_cast",
"return",
"rg11b10f",
"rg16snorm",
"rg16unorm",
"rg8snorm",
"rg8unorm",
"rgb10a2",
"rgb9e5",
"rgba16snorm",
"rgba16unorm",
"rgba8snorm",
"rgba8unorm",
"sampler",
"short",
"short2",
"short3",
"short4",
"signed",
"size_t",
"sizeof",
"srgba8unorm",
"static",
"static_assert",
"static_cast",
"struct",
"switch",
"template",
"texture",
"texture1d",
"texture1d_array",
"texture2d",
"texture2d_array",
"texture2d_ms",
"texture2d_ms_array",
"texture3d",
"texture_buffer",
"texturecube",
"texturecube_array",
"this",
"thread",
"thread_local",
"threadgroup",
"threadgroup_imageblock",
"throw",
"true",
"try",
"typedef",
"typeid",
"typename",
"uchar",
"uchar2",
"uchar3",
"uchar4",
"uint",
"uint16_t",
"uint2",
"uint3",
"uint32_t",
"uint4",
"uint64_t",
"uint8_t",
"ulong2",
"ulong3",
"ulong4",
"uniform",
"union",
"unsigned",
"ushort",
"ushort2",
"ushort3",
"ushort4",
"using",
"vec",
"vertex",
"virtual",
"void",
"volatile",
"wchar_t",
"while",
"xor",
"xor_eq",
};
} // namespace
Renamer::Data::Data(Remappings&& r) : remappings(std::move(r)) {}
Renamer::Data::Data(const Data&) = default;
Renamer::Data::~Data() = default;
Renamer::Config::Config(Target t) : target(t) {}
Renamer::Config::Config(const Config&) = default;
Renamer::Config::~Config() = default;
Renamer::Renamer() = default;
Renamer::~Renamer() = default;
Output Renamer::Run(const Program* in, const DataMap& inputs) {
ProgramBuilder out;
// Disable auto-cloning of symbols, since we want to rename them.
CloneContext ctx(&out, in, false);
// Swizzles, intrinsic calls and builtin structure members need to keep their
// symbols preserved.
std::unordered_set<const ast::IdentifierExpression*> preserve;
for (auto* node : in->ASTNodes().Objects()) {
if (auto* member = node->As<ast::MemberAccessorExpression>()) {
auto* sem = in->Sem().Get(member);
if (!sem) {
TINT_ICE(Transform, out.Diagnostics())
<< "MemberAccessorExpression has no semantic info";
continue;
}
if (sem->Is<sem::Swizzle>()) {
preserve.emplace(member->member);
} else if (auto* str_expr = in->Sem().Get(member->structure)) {
if (auto* ty = str_expr->Type()->UnwrapRef()->As<sem::Struct>()) {
if (ty->Declaration() == nullptr) { // Builtin structure
preserve.emplace(member->member);
}
}
}
} else if (auto* call = node->As<ast::CallExpression>()) {
auto* sem = in->Sem().Get(call);
if (!sem) {
TINT_ICE(Transform, out.Diagnostics())
<< "CallExpression has no semantic info";
continue;
}
if (sem->Target()->Is<sem::Intrinsic>()) {
preserve.emplace(call->func);
}
}
}
Data::Remappings remappings;
Target target = Target::kAll;
if (auto* cfg = inputs.Get<Config>()) {
target = cfg->target;
}
ctx.ReplaceAll([&](Symbol sym_in) {
auto name_in = ctx.src->Symbols().NameFor(sym_in);
switch (target) {
case Target::kAll:
// Always rename.
break;
case Target::kGlslKeywords:
if (!std::binary_search(
kReservedKeywordsGLSL,
kReservedKeywordsGLSL +
sizeof(kReservedKeywordsGLSL) / sizeof(const char*),
name_in)) {
// No match, just reuse the original name.
return ctx.dst->Symbols().New(name_in);
}
break;
case Target::kHlslKeywords:
if (!std::binary_search(
kReservedKeywordsHLSL,
kReservedKeywordsHLSL +
sizeof(kReservedKeywordsHLSL) / sizeof(const char*),
name_in)) {
// No match, just reuse the original name.
return ctx.dst->Symbols().New(name_in);
}
break;
case Target::kMslKeywords:
if (!std::binary_search(
kReservedKeywordsMSL,
kReservedKeywordsMSL +
sizeof(kReservedKeywordsMSL) / sizeof(const char*),
name_in)) {
// No match, just reuse the original name.
return ctx.dst->Symbols().New(name_in);
}
break;
}
auto sym_out = ctx.dst->Sym();
remappings.emplace(name_in, ctx.dst->Symbols().NameFor(sym_out));
return sym_out;
});
ctx.ReplaceAll([&](const ast::IdentifierExpression* ident)
-> const ast::IdentifierExpression* {
if (preserve.count(ident)) {
auto sym_in = ident->symbol;
auto str = in->Symbols().NameFor(sym_in);
auto sym_out = out.Symbols().Register(str);
return ctx.dst->create<ast::IdentifierExpression>(
ctx.Clone(ident->source), sym_out);
}
return nullptr; // Clone ident. Uses the symbol remapping above.
});
ctx.Clone();
return Output(Program(std::move(out)),
std::make_unique<Data>(std::move(remappings)));
}
} // namespace transform
} // namespace tint