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#include "src/tint/lang/spirv/reader/parser/helper_test.h"

#include "gtest/gtest-spi.h"

namespace tint::spirv::reader {

TEST_F(SpirvParserTest, Struct_Empty) {
    EXPECT_FATAL_FAILURE(  //
        {
            auto assembly = Assemble(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
       %void = OpTypeVoid
        %str = OpTypeStruct
    %ep_type = OpTypeFunction %void
    %fn_type = OpTypeFunction %void %str

        %foo = OpFunction %void None %fn_type
      %param = OpFunctionParameter %str
  %foo_start = OpLabel
               OpReturn
               OpFunctionEnd

       %main = OpFunction %void None %ep_type
 %main_start = OpLabel
               OpReturn
               OpFunctionEnd
)");
            auto parsed = Parse(Slice(assembly.Get().data(), assembly.Get().size()));
            EXPECT_EQ(parsed, Success);
        },
        "empty structures are not supported");
}

TEST_F(SpirvParserTest, Struct_BasicDecl) {
    EXPECT_IR(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
       %void = OpTypeVoid
        %i32 = OpTypeInt 32 1
        %str = OpTypeStruct %i32 %i32
    %ep_type = OpTypeFunction %void
    %fn_type = OpTypeFunction %void %str

        %foo = OpFunction %void None %fn_type
      %param = OpFunctionParameter %str
  %foo_start = OpLabel
               OpReturn
               OpFunctionEnd

       %main = OpFunction %void None %ep_type
 %main_start = OpLabel
               OpReturn
               OpFunctionEnd
)",
              R"(
tint_symbol_2 = struct @align(4) {
  tint_symbol:i32 @offset(0)
  tint_symbol_1:i32 @offset(4)
}

%1 = func(%2:tint_symbol_2):void -> %b1 {
  %b1 = block {
    ret
  }
}
)");
}

TEST_F(SpirvParserTest, Struct_MultipleUses) {
    EXPECT_IR(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
       %void = OpTypeVoid
        %i32 = OpTypeInt 32 1
        %str = OpTypeStruct %i32 %i32
    %ep_type = OpTypeFunction %void
    %fn_type = OpTypeFunction %str %str %str

        %foo = OpFunction %str None %fn_type
    %param_1 = OpFunctionParameter %str
    %param_2 = OpFunctionParameter %str
  %foo_start = OpLabel
               OpReturnValue %param_1
               OpFunctionEnd

       %main = OpFunction %void None %ep_type
 %main_start = OpLabel
               OpReturn
               OpFunctionEnd
)",
              R"(
tint_symbol_2 = struct @align(4) {
  tint_symbol:i32 @offset(0)
  tint_symbol_1:i32 @offset(4)
}

%1 = func(%2:tint_symbol_2, %3:tint_symbol_2):tint_symbol_2 -> %b1 {
  %b1 = block {
    ret %2
  }
}
)");
}

TEST_F(SpirvParserTest, Struct_Nested) {
    EXPECT_IR(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
       %void = OpTypeVoid
        %i32 = OpTypeInt 32 1
      %inner = OpTypeStruct %i32 %i32
     %middle = OpTypeStruct %inner %inner
      %outer = OpTypeStruct %inner %middle %inner
    %ep_type = OpTypeFunction %void
    %fn_type = OpTypeFunction %void %outer

        %foo = OpFunction %void None %fn_type
      %param = OpFunctionParameter %outer
  %foo_start = OpLabel
               OpReturn
               OpFunctionEnd

       %main = OpFunction %void None %ep_type
 %main_start = OpLabel
               OpReturn
               OpFunctionEnd
)",
              R"(
tint_symbol_2 = struct @align(4) {
  tint_symbol:i32 @offset(0)
  tint_symbol_1:i32 @offset(4)
}

tint_symbol_6 = struct @align(4) {
  tint_symbol_4:tint_symbol_2 @offset(0)
  tint_symbol_5:tint_symbol_2 @offset(8)
}

tint_symbol_9 = struct @align(4) {
  tint_symbol_3:tint_symbol_2 @offset(0)
  tint_symbol_7:tint_symbol_6 @offset(8)
  tint_symbol_8:tint_symbol_2 @offset(24)
}

%1 = func(%2:tint_symbol_9):void -> %b1 {
  %b1 = block {
    ret
  }
}
)");
}

TEST_F(SpirvParserTest, Struct_Offset) {
    EXPECT_IR(R"(
               OpCapability Shader
               OpMemoryModel Logical GLSL450
               OpEntryPoint GLCompute %main "main"
               OpExecutionMode %main LocalSize 1 1 1
               OpMemberDecorate %str 0 Offset 0
               OpMemberDecorate %str 1 Offset 4
               OpMemberDecorate %str 2 Offset 32
               OpMemberDecorate %str 3 Offset 64
       %void = OpTypeVoid
        %i32 = OpTypeInt 32 1
        %str = OpTypeStruct %i32 %i32 %i32 %i32
    %ep_type = OpTypeFunction %void
    %fn_type = OpTypeFunction %void %str

        %foo = OpFunction %void None %fn_type
      %param = OpFunctionParameter %str
  %foo_start = OpLabel
               OpReturn
               OpFunctionEnd

       %main = OpFunction %void None %ep_type
 %main_start = OpLabel
               OpReturn
               OpFunctionEnd
)",
              R"(
tint_symbol_4 = struct @align(4) {
  tint_symbol:i32 @offset(0)
  tint_symbol_1:i32 @offset(4)
  tint_symbol_2:i32 @offset(32)
  tint_symbol_3:i32 @offset(64)
}

%1 = func(%2:tint_symbol_4):void -> %b1 {
  %b1 = block {
    ret
  }
}
)");
}

}  // namespace tint::spirv::reader