// Copyright 2020 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 "gmock/gmock.h"
#include "src/tint/reader/spirv/function.h"
#include "src/tint/reader/spirv/parser_impl_test_helper.h"
#include "src/tint/reader/spirv/spirv_tools_helpers_test.h"

namespace tint::reader::spirv {
namespace {

using ::testing::HasSubstr;

std::string Preamble() {
  return R"(
  OpCapability Shader
  OpMemoryModel Logical Simple
  OpEntryPoint Fragment %100 "main"
  OpExecutionMode %100 OriginUpperLeft

  %void = OpTypeVoid
  %voidfn = OpTypeFunction %void

  %uint = OpTypeInt 32 0
  %int = OpTypeInt 32 1
  %float = OpTypeFloat 32

  %uint_10 = OpConstant %uint 10
  %uint_20 = OpConstant %uint 20
  %int_30 = OpConstant %int 30
  %int_40 = OpConstant %int 40
  %float_50 = OpConstant %float 50
  %float_60 = OpConstant %float 60
  %float_70 = OpConstant %float 70

  %ptr_uint = OpTypePointer Function %uint
  %ptr_int = OpTypePointer Function %int
  %ptr_float = OpTypePointer Function %float

  %v2uint = OpTypeVector %uint 2
  %v2int = OpTypeVector %int 2
  %v2float = OpTypeVector %float 2
  %v3float = OpTypeVector %float 3

  %v2uint_10_20 = OpConstantComposite %v2uint %uint_10 %uint_20
  %v2uint_20_10 = OpConstantComposite %v2uint %uint_20 %uint_10
  %v2int_30_40 = OpConstantComposite %v2int %int_30 %int_40
  %v2int_40_30 = OpConstantComposite %v2int %int_40 %int_30
  %v2float_50_60 = OpConstantComposite %v2float %float_50 %float_60
  %v2float_60_50 = OpConstantComposite %v2float %float_60 %float_50
  %v3float_50_60_70 = OpConstantComposite %v3float %float_50 %float_60 %float_70
  %v3float_60_70_50 = OpConstantComposite %v3float %float_60 %float_70 %float_50

  %m2v2float = OpTypeMatrix %v2float 2
  %m2v3float = OpTypeMatrix %v3float 2
  %m3v2float = OpTypeMatrix %v2float 3
  %m2v2float_a = OpConstantComposite %m2v2float %v2float_50_60 %v2float_60_50
  %m2v2float_b = OpConstantComposite %m2v2float %v2float_60_50 %v2float_50_60
  %m3v2float_a = OpConstantComposite %m3v2float %v2float_50_60 %v2float_60_50 %v2float_50_60
  %m2v3float_a = OpConstantComposite %m2v3float %v3float_50_60_70 %v3float_60_70_50
)";
}

// Returns the AST dump for a given SPIR-V assembly constant.
std::string AstFor(std::string assembly) {
  if (assembly == "v2uint_10_20") {
    return "vec2<u32>(10u, 20u)";
  }
  if (assembly == "v2uint_20_10") {
    return "vec2<u32>(20u, 10u)";
  }
  if (assembly == "v2int_30_40") {
    return "vec2<i32>(30, 40)";
  }
  if (assembly == "v2int_40_30") {
    return "vec2<i32>(40, 30)";
  }
  if (assembly == "cast_int_v2uint_10_20") {
    return "bitcast<vec2<i32>>(vec2<u32>(10u, 20u))";
  }
  if (assembly == "cast_uint_v2int_40_30") {
    return "bitcast<vec2<u32>>(vec2<i32>(40, 30))";
  }
  if (assembly == "v2float_50_60") {
    return "vec2<f32>(50.0, 60.0)";
  }
  if (assembly == "v2float_60_50") {
    return "vec2<f32>(60.0, 50.0)";
  }
  return "bad case";
}

using SpvUnaryArithTest = SpvParserTestBase<::testing::Test>;

TEST_F(SpvUnaryArithTest, SNegate_Int_Int) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSNegate %int %int_30
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_1 : i32 = -(30);"));
}

TEST_F(SpvUnaryArithTest, SNegate_Int_Uint) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSNegate %int %uint_10
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_1 : i32 = -(bitcast<i32>(10u));"));
}

TEST_F(SpvUnaryArithTest, SNegate_Uint_Int) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSNegate %uint %int_30
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_1 : u32 = bitcast<u32>(-(30));"));
}

TEST_F(SpvUnaryArithTest, SNegate_Uint_Uint) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSNegate %uint %uint_10
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_1 : u32 = bitcast<u32>(-(bitcast<i32>(10u)));"));
}

TEST_F(SpvUnaryArithTest, SNegate_SignedVec_SignedVec) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSNegate %v2int %v2int_30_40
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_1 : vec2<i32> = -(vec2<i32>(30, 40));"));
}

TEST_F(SpvUnaryArithTest, SNegate_SignedVec_UnsignedVec) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSNegate %v2int %v2uint_10_20
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(
      test::ToString(p->program(), ast_body),
      HasSubstr(
          "let x_1 : vec2<i32> = -(bitcast<vec2<i32>>(vec2<u32>(10u, 20u)));"));
}

TEST_F(SpvUnaryArithTest, SNegate_UnsignedVec_SignedVec) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSNegate %v2uint %v2int_30_40
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(
      test::ToString(p->program(), ast_body),
      HasSubstr(
          "let x_1 : vec2<u32> = bitcast<vec2<u32>>(-(vec2<i32>(30, 40)));"));
}

TEST_F(SpvUnaryArithTest, SNegate_UnsignedVec_UnsignedVec) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSNegate %v2uint %v2uint_10_20
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(
      test::ToString(p->program(), ast_body),
      HasSubstr(
          R"(let x_1 : vec2<u32> = bitcast<vec2<u32>>(-(bitcast<vec2<i32>>(vec2<u32>(10u, 20u))));)"));
}

TEST_F(SpvUnaryArithTest, FNegate_Scalar) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpFNegate %float %float_50
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_1 : f32 = -(50.0);"));
}

TEST_F(SpvUnaryArithTest, FNegate_Vector) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpFNegate %v2float %v2float_50_60
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_1 : vec2<f32> = -(vec2<f32>(50.0, 60.0));"));
}

struct BinaryData {
  const std::string res_type;
  const std::string lhs;
  const std::string op;
  const std::string rhs;
  const std::string ast_type;
  const std::string ast_lhs;
  const std::string ast_op;
  const std::string ast_rhs;
};
inline std::ostream& operator<<(std::ostream& out, BinaryData data) {
  out << "BinaryData{" << data.res_type << "," << data.lhs << "," << data.op
      << "," << data.rhs << "," << data.ast_type << "," << data.ast_lhs << ","
      << data.ast_op << "," << data.ast_rhs << "}";
  return out;
}

using SpvBinaryArithTest =
    SpvParserTestBase<::testing::TestWithParam<BinaryData>>;
using SpvBinaryArithTestBasic = SpvParserTestBase<::testing::Test>;

TEST_P(SpvBinaryArithTest, EmitExpression) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = )" + GetParam().op +
                        " %" + GetParam().res_type + " %" + GetParam().lhs +
                        " %" + GetParam().rhs + R"(
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  std::ostringstream ss;
  ss << "let x_1 : " << GetParam().ast_type << " = (" << GetParam().ast_lhs
     << " " << GetParam().ast_op << " " << GetParam().ast_rhs << ");";
  auto ast_body = fe.ast_body();
  auto got = test::ToString(p->program(), ast_body);
  EXPECT_THAT(got, HasSubstr(ss.str())) << "got:\n" << got << assembly;
}

// Use this when the result might have extra bitcasts on the outside.
struct BinaryDataGeneral {
  const std::string res_type;
  const std::string lhs;
  const std::string op;
  const std::string rhs;
  const std::string wgsl_type;
  const std::string expected;
};
inline std::ostream& operator<<(std::ostream& out, BinaryDataGeneral data) {
  out << "BinaryDataGeneral{" << data.res_type << "," << data.lhs << ","
      << data.op << "," << data.rhs << "," << data.wgsl_type << ","
      << data.expected << "}";
  return out;
}

using SpvBinaryArithGeneralTest =
    SpvParserTestBase<::testing::TestWithParam<BinaryDataGeneral>>;

TEST_P(SpvBinaryArithGeneralTest, EmitExpression) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = )" + GetParam().op +
                        " %" + GetParam().res_type + " %" + GetParam().lhs +
                        " %" + GetParam().rhs + R"(
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  std::ostringstream ss;
  ss << "let x_1 : " << GetParam().wgsl_type << " = " << GetParam().expected
     << ";";
  auto ast_body = fe.ast_body();
  auto got = test::ToString(p->program(), ast_body);
  EXPECT_THAT(got, HasSubstr(ss.str())) << "got:\n" << got << assembly;
}

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_IAdd,
    SpvBinaryArithTest,
    ::testing::Values(
        // Both uint
        BinaryData{"uint", "uint_10", "OpIAdd", "uint_20", "u32", "10u", "+",
                   "20u"},  // Both int
        BinaryData{"int", "int_30", "OpIAdd", "int_40", "i32", "30", "+",
                   "40"},  // Both v2uint
        BinaryData{"v2uint", "v2uint_10_20", "OpIAdd", "v2uint_20_10",
                   "vec2<u32>", AstFor("v2uint_10_20"), "+",
                   AstFor("v2uint_20_10")},
        // Both v2int
        BinaryData{"v2int", "v2int_30_40", "OpIAdd", "v2int_40_30", "vec2<i32>",
                   AstFor("v2int_30_40"), "+", AstFor("v2int_40_30")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_IAdd_MixedSignedness,
    SpvBinaryArithGeneralTest,
    ::testing::Values(
        // Mixed, uint <- int uint
        BinaryDataGeneral{"uint", "int_30", "OpIAdd", "uint_10", "u32",
                          "bitcast<u32>((30 + bitcast<i32>(10u)))"},
        // Mixed, int <- int uint
        BinaryDataGeneral{"int", "int_30", "OpIAdd", "uint_10", "i32",
                          "(30 + bitcast<i32>(10u))"},
        // Mixed, uint <- uint int
        BinaryDataGeneral{"uint", "uint_10", "OpIAdd", "int_30", "u32",
                          "(10u + bitcast<u32>(30))"},
        // Mixed, int <- uint uint
        BinaryDataGeneral{"int", "uint_20", "OpIAdd", "uint_10", "i32",
                          "bitcast<i32>((20u + 10u))"},
        // Mixed, returning v2uint
        BinaryDataGeneral{
            "v2uint", "v2int_30_40", "OpIAdd", "v2uint_10_20", "vec2<u32>",
            R"(bitcast<vec2<u32>>((vec2<i32>(30, 40) + bitcast<vec2<i32>>(vec2<u32>(10u, 20u)))))"},
        // Mixed, returning v2int
        BinaryDataGeneral{
            "v2int", "v2uint_10_20", "OpIAdd", "v2int_40_30", "vec2<i32>",
            R"(bitcast<vec2<i32>>((vec2<u32>(10u, 20u) + bitcast<vec2<u32>>(vec2<i32>(40, 30)))))"}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_FAdd,
    SpvBinaryArithTest,
    ::testing::Values(
        // Scalar float
        BinaryData{"float", "float_50", "OpFAdd", "float_60", "f32", "50.0",
                   "+", "60.0"},  // Vector float
        BinaryData{"v2float", "v2float_50_60", "OpFAdd", "v2float_60_50",
                   "vec2<f32>", AstFor("v2float_50_60"), "+",
                   AstFor("v2float_60_50")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_ISub,
    SpvBinaryArithTest,
    ::testing::Values(
        // Both uint
        BinaryData{"uint", "uint_10", "OpISub", "uint_20", "u32", "10u", "-",
                   "20u"},  // Both int
        BinaryData{"int", "int_30", "OpISub", "int_40", "i32", "30", "-",
                   "40"},  // Both v2uint
        BinaryData{"v2uint", "v2uint_10_20", "OpISub", "v2uint_20_10",
                   "vec2<u32>", AstFor("v2uint_10_20"), "-",
                   AstFor("v2uint_20_10")},
        // Both v2int
        BinaryData{"v2int", "v2int_30_40", "OpISub", "v2int_40_30", "vec2<i32>",
                   AstFor("v2int_30_40"), "-", AstFor("v2int_40_30")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_ISub_MixedSignedness,
    SpvBinaryArithGeneralTest,
    ::testing::Values(
        // Mixed, uint <- int uint
        BinaryDataGeneral{"uint", "int_30", "OpISub", "uint_10", "u32",
                          R"(bitcast<u32>((30 - bitcast<i32>(10u))))"},
        // Mixed, int <- int uint
        BinaryDataGeneral{"int", "int_30", "OpISub", "uint_10", "i32",
                          "(30 - bitcast<i32>(10u))"},
        // Mixed, uint <- uint int
        BinaryDataGeneral{"uint", "uint_10", "OpISub", "int_30", "u32",
                          "(10u - bitcast<u32>(30))"},
        // Mixed, int <- uint uint
        BinaryDataGeneral{"int", "uint_20", "OpISub", "uint_10", "i32",
                          "bitcast<i32>((20u - 10u))"},
        // Mixed, returning v2uint
        BinaryDataGeneral{
            "v2uint", "v2int_30_40", "OpISub", "v2uint_10_20", "vec2<u32>",
            R"(bitcast<vec2<u32>>((vec2<i32>(30, 40) - bitcast<vec2<i32>>(vec2<u32>(10u, 20u)))))"},
        // Mixed, returning v2int
        BinaryDataGeneral{
            "v2int", "v2uint_10_20", "OpISub", "v2int_40_30", "vec2<i32>",
            R"(bitcast<vec2<i32>>((vec2<u32>(10u, 20u) - bitcast<vec2<u32>>(vec2<i32>(40, 30)))))"}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_FSub,
    SpvBinaryArithTest,
    ::testing::Values(
        // Scalar float
        BinaryData{"float", "float_50", "OpFSub", "float_60", "f32", "50.0",
                   "-", "60.0"},  // Vector float
        BinaryData{"v2float", "v2float_50_60", "OpFSub", "v2float_60_50",
                   "vec2<f32>", AstFor("v2float_50_60"), "-",
                   AstFor("v2float_60_50")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_IMul,
    SpvBinaryArithTest,
    ::testing::Values(
        // Both uint
        BinaryData{"uint", "uint_10", "OpIMul", "uint_20", "u32", "10u", "*",
                   "20u"},  // Both int
        BinaryData{"int", "int_30", "OpIMul", "int_40", "i32", "30", "*",
                   "40"},  // Both v2uint
        BinaryData{"v2uint", "v2uint_10_20", "OpIMul", "v2uint_20_10",
                   "vec2<u32>", AstFor("v2uint_10_20"), "*",
                   AstFor("v2uint_20_10")},
        // Both v2int
        BinaryData{"v2int", "v2int_30_40", "OpIMul", "v2int_40_30", "vec2<i32>",
                   AstFor("v2int_30_40"), "*", AstFor("v2int_40_30")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_IMul_MixedSignedness,
    SpvBinaryArithGeneralTest,
    ::testing::Values(
        // Mixed, uint <- int uint
        BinaryDataGeneral{"uint", "int_30", "OpIMul", "uint_10", "u32",
                          "bitcast<u32>((30 * bitcast<i32>(10u)))"},
        // Mixed, int <- int uint
        BinaryDataGeneral{"int", "int_30", "OpIMul", "uint_10", "i32",
                          "(30 * bitcast<i32>(10u))"},
        // Mixed, uint <- uint int
        BinaryDataGeneral{"uint", "uint_10", "OpIMul", "int_30", "u32",
                          "(10u * bitcast<u32>(30))"},
        // Mixed, int <- uint uint
        BinaryDataGeneral{"int", "uint_20", "OpIMul", "uint_10", "i32",
                          "bitcast<i32>((20u * 10u))"},
        // Mixed, returning v2uint
        BinaryDataGeneral{
            "v2uint", "v2int_30_40", "OpIMul", "v2uint_10_20", "vec2<u32>",
            R"(bitcast<vec2<u32>>((vec2<i32>(30, 40) * bitcast<vec2<i32>>(vec2<u32>(10u, 20u)))))"},
        // Mixed, returning v2int
        BinaryDataGeneral{
            "v2int", "v2uint_10_20", "OpIMul", "v2int_40_30", "vec2<i32>",
            R"(bitcast<vec2<i32>>((vec2<u32>(10u, 20u) * bitcast<vec2<u32>>(vec2<i32>(40, 30)))))"}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_FMul,
    SpvBinaryArithTest,
    ::testing::Values(
        // Scalar float
        BinaryData{"float", "float_50", "OpFMul", "float_60", "f32", "50.0",
                   "*", "60.0"},  // Vector float
        BinaryData{"v2float", "v2float_50_60", "OpFMul", "v2float_60_50",
                   "vec2<f32>", AstFor("v2float_50_60"), "*",
                   AstFor("v2float_60_50")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_UDiv,
    SpvBinaryArithTest,
    ::testing::Values(
        // Both uint
        BinaryData{"uint", "uint_10", "OpUDiv", "uint_20", "u32", "10u", "/",
                   "20u"},  // Both v2uint
        BinaryData{"v2uint", "v2uint_10_20", "OpUDiv", "v2uint_20_10",
                   "vec2<u32>", AstFor("v2uint_10_20"), "/",
                   AstFor("v2uint_20_10")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_SDiv,
    SpvBinaryArithTest,
    ::testing::Values(
        // Both int
        BinaryData{"int", "int_30", "OpSDiv", "int_40", "i32", "30", "/",
                   "40"},  // Both v2int
        BinaryData{"v2int", "v2int_30_40", "OpSDiv", "v2int_40_30", "vec2<i32>",
                   AstFor("v2int_30_40"), "/", AstFor("v2int_40_30")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_SDiv_MixedSignednessOperands,
    SpvBinaryArithTest,
    ::testing::Values(
        // Mixed, returning int, second arg uint
        BinaryData{"int", "int_30", "OpSDiv", "uint_10", "i32", "30", "/",
                   "bitcast<i32>(10u)"},
        // Mixed, returning int, first arg uint
        BinaryData{"int", "uint_10", "OpSDiv", "int_30", "i32",
                   "bitcast<i32>(10u)", "/",
                   "30"},  // Mixed, returning v2int, first arg v2uint
        BinaryData{"v2int", "v2uint_10_20", "OpSDiv", "v2int_30_40",
                   "vec2<i32>", AstFor("cast_int_v2uint_10_20"), "/",
                   AstFor("v2int_30_40")},
        // Mixed, returning v2int, second arg v2uint
        BinaryData{"v2int", "v2int_30_40", "OpSDiv", "v2uint_10_20",
                   "vec2<i32>", AstFor("v2int_30_40"), "/",
                   AstFor("cast_int_v2uint_10_20")}));

TEST_F(SpvBinaryArithTestBasic, SDiv_Scalar_UnsignedResult) {
  // The WGSL signed division operator expects both operands to be signed
  // and the result is signed as well.
  // In this test SPIR-V demands an unsigned result, so we have to
  // wrap the result with an as-cast.
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSDiv %uint %int_30 %int_40
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_1 : u32 = bitcast<u32>((30 / 40));"));
}

TEST_F(SpvBinaryArithTestBasic, SDiv_Vector_UnsignedResult) {
  // The WGSL signed division operator expects both operands to be signed
  // and the result is signed as well.
  // In this test SPIR-V demands an unsigned result, so we have to
  // wrap the result with an as-cast.
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSDiv %v2uint %v2int_30_40 %v2int_40_30
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(
      test::ToString(p->program(), ast_body),
      HasSubstr(
          R"(let x_1 : vec2<u32> = bitcast<vec2<u32>>((vec2<i32>(30, 40) / vec2<i32>(40, 30)));)"));
}

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_FDiv,
    SpvBinaryArithTest,
    ::testing::Values(
        // Scalar float
        BinaryData{"float", "float_50", "OpFDiv", "float_60", "f32", "50.0",
                   "/", "60.0"},  // Vector float
        BinaryData{"v2float", "v2float_50_60", "OpFDiv", "v2float_60_50",
                   "vec2<f32>", AstFor("v2float_50_60"), "/",
                   AstFor("v2float_60_50")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_UMod,
    SpvBinaryArithTest,
    ::testing::Values(
        // Both uint
        BinaryData{"uint", "uint_10", "OpUMod", "uint_20", "u32", "10u", "%",
                   "20u"},  // Both v2uint
        BinaryData{"v2uint", "v2uint_10_20", "OpUMod", "v2uint_20_10",
                   "vec2<u32>", AstFor("v2uint_10_20"), "%",
                   AstFor("v2uint_20_10")}));

// Currently WGSL is missing a mapping for OpSRem
// https://github.com/gpuweb/gpuweb/issues/702

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_SMod,
    SpvBinaryArithTest,
    ::testing::Values(
        // Both int
        BinaryData{"int", "int_30", "OpSMod", "int_40", "i32", "30", "%",
                   "40"},  // Both v2int
        BinaryData{"v2int", "v2int_30_40", "OpSMod", "v2int_40_30", "vec2<i32>",
                   AstFor("v2int_30_40"), "%", AstFor("v2int_40_30")}));

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_SMod_MixedSignednessOperands,
    SpvBinaryArithTest,
    ::testing::Values(
        // Mixed, returning int, second arg uint
        BinaryData{"int", "int_30", "OpSMod", "uint_10", "i32", "30", "%",
                   "bitcast<i32>(10u)"},
        // Mixed, returning int, first arg uint
        BinaryData{"int", "uint_10", "OpSMod", "int_30", "i32",
                   "bitcast<i32>(10u)", "%",
                   "30"},  // Mixed, returning v2int, first arg v2uint
        BinaryData{"v2int", "v2uint_10_20", "OpSMod", "v2int_30_40",
                   "vec2<i32>", AstFor("cast_int_v2uint_10_20"), "%",
                   AstFor("v2int_30_40")},
        // Mixed, returning v2int, second arg v2uint
        BinaryData{"v2int", "v2int_30_40", "OpSMod", "v2uint_10_20",
                   "vec2<i32>", AstFor("v2int_30_40"), "%",
                   AstFor("cast_int_v2uint_10_20")}));

TEST_F(SpvBinaryArithTestBasic, SMod_Scalar_UnsignedResult) {
  // The WGSL signed modulus operator expects both operands to be signed
  // and the result is signed as well.
  // In this test SPIR-V demands an unsigned result, so we have to
  // wrap the result with an as-cast.
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSMod %uint %int_30 %int_40
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_1 : u32 = bitcast<u32>((30 % 40));"));
}

TEST_F(SpvBinaryArithTestBasic, SMod_Vector_UnsignedResult) {
  // The WGSL signed modulus operator expects both operands to be signed
  // and the result is signed as well.
  // In this test SPIR-V demands an unsigned result, so we have to
  // wrap the result with an as-cast.
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpSMod %v2uint %v2int_30_40 %v2int_40_30
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(
      test::ToString(p->program(), ast_body),
      HasSubstr(
          R"(let x_1 : vec2<u32> = bitcast<vec2<u32>>((vec2<i32>(30, 40) % vec2<i32>(40, 30)));)"));
}

INSTANTIATE_TEST_SUITE_P(
    SpvParserTest_FRem,
    SpvBinaryArithTest,
    ::testing::Values(
        // Scalar float
        BinaryData{"float", "float_50", "OpFRem", "float_60", "f32", "50.0",
                   "%", "60.0"},  // Vector float
        BinaryData{"v2float", "v2float_50_60", "OpFRem", "v2float_60_50",
                   "vec2<f32>", AstFor("v2float_50_60"), "%",
                   AstFor("v2float_60_50")}));

TEST_F(SpvBinaryArithTestBasic, FMod_Scalar) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpFMod %float %float_50 %float_60
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(
      test::ToString(p->program(), ast_body),
      HasSubstr("let x_1 : f32 = (50.0 - (60.0 * floor((50.0 / 60.0))));"));
}

TEST_F(SpvBinaryArithTestBasic, FMod_Vector) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpFMod %v2float %v2float_50_60 %v2float_60_50
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(
      test::ToString(p->program(), ast_body),
      HasSubstr(
          R"(let x_1 : vec2<f32> = (vec2<f32>(50.0, 60.0) - (vec2<f32>(60.0, 50.0) * floor((vec2<f32>(50.0, 60.0) / vec2<f32>(60.0, 50.0)))));)"));
}

TEST_F(SpvBinaryArithTestBasic, VectorTimesScalar) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %v2float %v2float_50_60
     %2 = OpCopyObject %float %float_50
     %10 = OpVectorTimesScalar %v2float %1 %2
     OpReturn
     OpFunctionEnd
)";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << assembly << p->error();
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_10 : vec2<f32> = (x_1 * x_2);"));
}

TEST_F(SpvBinaryArithTestBasic, MatrixTimesScalar) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %m2v2float %m2v2float_a
     %2 = OpCopyObject %float %float_50
     %10 = OpMatrixTimesScalar %m2v2float %1 %2
     OpReturn
     OpFunctionEnd
)";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << assembly << p->error();
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_10 : mat2x2<f32> = (x_1 * x_2);"));
}

TEST_F(SpvBinaryArithTestBasic, VectorTimesMatrix) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %m2v2float %m2v2float_a
     %2 = OpCopyObject %v2float %v2float_50_60
     %10 = OpMatrixTimesVector %v2float %1 %2
     OpReturn
     OpFunctionEnd
)";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << assembly << p->error();
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_10 : vec2<f32> = (x_1 * x_2);"));
}

TEST_F(SpvBinaryArithTestBasic, MatrixTimesVector) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %m2v2float %m2v2float_a
     %2 = OpCopyObject %v2float %v2float_50_60
     %10 = OpMatrixTimesVector %v2float %1 %2
     OpReturn
     OpFunctionEnd
)";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << assembly << p->error();
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_10 : vec2<f32> = (x_1 * x_2);"));
}

TEST_F(SpvBinaryArithTestBasic, MatrixTimesMatrix) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %m2v2float %m2v2float_a
     %2 = OpCopyObject %m2v2float %m2v2float_b
     %10 = OpMatrixTimesMatrix %m2v2float %1 %2
     OpReturn
     OpFunctionEnd
)";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << assembly << p->error();
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_10 : mat2x2<f32> = (x_1 * x_2);"));
}

TEST_F(SpvBinaryArithTestBasic, Dot) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %v2float %v2float_50_60
     %2 = OpCopyObject %v2float %v2float_60_50
     %3 = OpDot %float %1 %2
     OpReturn
     OpFunctionEnd
)";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << assembly << p->error();
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(test::ToString(p->program(), ast_body),
              HasSubstr("let x_3 : f32 = dot(x_1, x_2);"));
}

TEST_F(SpvBinaryArithTestBasic, OuterProduct) {
  // OpOuterProduct is expanded to basic operations.
  // The operands, even if used once, are given their own const definitions.
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpFAdd %v3float %v3float_50_60_70 %v3float_50_60_70 ; column vector
     %2 = OpFAdd %v2float %v2float_60_50 %v2float_50_60 ; row vector
     %3 = OpOuterProduct %m2v3float %1 %2
     OpReturn
     OpFunctionEnd
)";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << assembly << p->error();
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  auto got = test::ToString(p->program(), ast_body);
  EXPECT_THAT(
      got,
      HasSubstr(
          "let x_3 : mat2x3<f32> = mat2x3<f32>("
          "vec3<f32>((x_2.x * x_1.x), (x_2.x * x_1.y), (x_2.x * x_1.z)), "
          "vec3<f32>((x_2.y * x_1.x), (x_2.y * x_1.y), (x_2.y * x_1.z)));"))
      << got;
}

struct BuiltinData {
  const std::string spirv;
  const std::string wgsl;
};
inline std::ostream& operator<<(std::ostream& out, BuiltinData data) {
  out << "OpData{" << data.spirv << "," << data.wgsl << "}";
  return out;
}
struct ArgAndTypeData {
  const std::string spirv_type;
  const std::string spirv_arg;
  const std::string ast_type;
};
inline std::ostream& operator<<(std::ostream& out, ArgAndTypeData data) {
  out << "ArgAndTypeData{" << data.spirv_type << "," << data.spirv_arg << ","
      << data.ast_type << "}";
  return out;
}

using SpvBinaryDerivativeTest = SpvParserTestBase<
    ::testing::TestWithParam<std::tuple<BuiltinData, ArgAndTypeData>>>;

TEST_P(SpvBinaryDerivativeTest, Derivatives) {
  auto& builtin = std::get<0>(GetParam());
  auto& arg = std::get<1>(GetParam());

  const auto assembly = R"(
     OpCapability DerivativeControl
)" + Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %)" +
                        arg.spirv_type + " %" + arg.spirv_arg + R"(
     %2 = )" + builtin.spirv +
                        " %" + arg.spirv_type + R"( %1
     OpReturn
     OpFunctionEnd
)";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << assembly << p->error();
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  auto ast_body = fe.ast_body();
  EXPECT_THAT(
      test::ToString(p->program(), ast_body),
      HasSubstr("let x_2 : " + arg.ast_type + " = " + builtin.wgsl + "(x_1);"));
}

INSTANTIATE_TEST_SUITE_P(
    SpvBinaryDerivativeTest,
    SpvBinaryDerivativeTest,
    testing::Combine(
        ::testing::Values(BuiltinData{"OpDPdx", "dpdx"},
                          BuiltinData{"OpDPdy", "dpdy"},
                          BuiltinData{"OpFwidth", "fwidth"},
                          BuiltinData{"OpDPdxFine", "dpdxFine"},
                          BuiltinData{"OpDPdyFine", "dpdyFine"},
                          BuiltinData{"OpFwidthFine", "fwidthFine"},
                          BuiltinData{"OpDPdxCoarse", "dpdxCoarse"},
                          BuiltinData{"OpDPdyCoarse", "dpdyCoarse"},
                          BuiltinData{"OpFwidthCoarse", "fwidthCoarse"}),
        ::testing::Values(
            ArgAndTypeData{"float", "float_50", "f32"},
            ArgAndTypeData{"v2float", "v2float_50_60", "vec2<f32>"},
            ArgAndTypeData{"v3float", "v3float_50_60_70", "vec3<f32>"})));

TEST_F(SpvUnaryArithTest, Transpose_2x2) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %m2v2float %m2v2float_a
     %2 = OpTranspose %m2v2float %1
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  const auto* expected = "let x_2 : mat2x2<f32> = transpose(x_1);";
  auto ast_body = fe.ast_body();
  const auto got = test::ToString(p->program(), ast_body);
  EXPECT_THAT(got, HasSubstr(expected)) << got;
}

TEST_F(SpvUnaryArithTest, Transpose_2x3) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %m2v3float %m2v3float_a
     %2 = OpTranspose %m3v2float %1
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  // Note, in the AST dump mat_2_3 means 2 rows and 3 columns.
  // So the column vectors have 2 elements.
  // That is,   %m3v2float is __mat_2_3f32.
  const auto* expected = "let x_2 : mat3x2<f32> = transpose(x_1);";
  auto ast_body = fe.ast_body();
  const auto got = test::ToString(p->program(), ast_body);
  EXPECT_THAT(got, HasSubstr(expected)) << got;
}

TEST_F(SpvUnaryArithTest, Transpose_3x2) {
  const auto assembly = Preamble() + R"(
     %100 = OpFunction %void None %voidfn
     %entry = OpLabel
     %1 = OpCopyObject %m3v2float %m3v2float_a
     %2 = OpTranspose %m2v3float %1
     OpReturn
     OpFunctionEnd
  )";
  auto p = parser(test::Assemble(assembly));
  ASSERT_TRUE(p->BuildAndParseInternalModuleExceptFunctions())
      << p->error() << "\n"
      << assembly;
  auto fe = p->function_emitter(100);
  EXPECT_TRUE(fe.EmitBody()) << p->error();
  const auto* expected = "let x_2 : mat2x3<f32> = transpose(x_1);";
  auto ast_body = fe.ast_body();
  const auto got = test::ToString(p->program(), ast_body);
  EXPECT_THAT(got, HasSubstr(expected)) << got;
}

// TODO(dneto): OpSRem. Missing from WGSL
// https://github.com/gpuweb/gpuweb/issues/702

// TODO(dneto): OpFRem. Missing from WGSL
// https://github.com/gpuweb/gpuweb/issues/702

// TODO(dneto): OpIAddCarry
// TODO(dneto): OpISubBorrow
// TODO(dneto): OpUMulExtended
// TODO(dneto): OpSMulExtended

}  // namespace
}  // namespace tint::reader::spirv