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#include "src/tint/lang/core/ir/builder.h"

#include "gmock/gmock.h"
#include "src/tint/lang/core/ir/ir_helper_test.h"

namespace tint::core::ir {
namespace {

using namespace tint::core::number_suffixes;  // NOLINT
using IR_BuilderTest = IRTestHelper;

TEST_F(IR_BuilderTest, Append) {
    auto* func = b.Function("foo", ty.void_());
    b.Append(func->Block(), [&] {
        b.Let("a", 1_u);
        b.Let("b", 2_u);
        b.Let("c", 3_u);
    });
    b.Append(func->Block(), [&] {
        b.Let("d", 4_u);
        b.Let("e", 5_u);
        b.Let("f", 6_u);
    });
    EXPECT_EQ(str(), R"(
%foo = func():void {
  $B1: {
    %a:u32 = let 1u
    %b:u32 = let 2u
    %c:u32 = let 3u
    %d:u32 = let 4u
    %e:u32 = let 5u
    %f:u32 = let 6u
  }
}
)");
}

TEST_F(IR_BuilderTest, InsertBefore) {
    auto* func = b.Function("foo", ty.void_());
    Instruction* ip = nullptr;
    b.Append(func->Block(), [&] {
        b.Let("a", 1_u);
        ip = b.Let("b", 2_u);
        b.Let("c", 3_u);
    });
    b.InsertBefore(ip, [&] {
        b.Let("d", 4_u);
        b.Let("e", 5_u);
        b.Let("f", 6_u);
    });
    EXPECT_EQ(str(), R"(
%foo = func():void {
  $B1: {
    %a:u32 = let 1u
    %d:u32 = let 4u
    %e:u32 = let 5u
    %f:u32 = let 6u
    %b:u32 = let 2u
    %c:u32 = let 3u
  }
}
)");
}

TEST_F(IR_BuilderTest, InsertAfter) {
    auto* func = b.Function("foo", ty.void_());
    Instruction* ip = nullptr;
    b.Append(func->Block(), [&] {
        b.Let("a", 1_u);
        ip = b.Let("b", 2_u);
        b.Let("c", 3_u);
    });
    b.InsertAfter(ip, [&] {
        b.Let("d", 4_u);
        b.Let("e", 5_u);
        b.Let("f", 6_u);
    });
    EXPECT_EQ(str(), R"(
%foo = func():void {
  $B1: {
    %a:u32 = let 1u
    %b:u32 = let 2u
    %d:u32 = let 4u
    %e:u32 = let 5u
    %f:u32 = let 6u
    %c:u32 = let 3u
  }
}
)");
}

TEST_F(IR_BuilderTest, InsertInBlockAfter_InstructionResult) {
    auto* func = b.Function("foo", ty.void_());
    Instruction* ip = nullptr;
    b.Append(func->Block(), [&] {
        b.Let("a", 1_u);
        ip = b.Let("b", 2_u);
        b.Let("c", 3_u);
    });
    b.InsertInBlockAfter(ip->Result(), [&] {
        b.Let("d", 4_u);
        b.Let("e", 5_u);
        b.Let("f", 6_u);
    });
    EXPECT_EQ(str(), R"(
%foo = func():void {
  $B1: {
    %a:u32 = let 1u
    %b:u32 = let 2u
    %d:u32 = let 4u
    %e:u32 = let 5u
    %f:u32 = let 6u
    %c:u32 = let 3u
  }
}
)");
}

TEST_F(IR_BuilderTest, InsertInBlockAfter_Param) {
    auto* func = b.Function("foo", ty.void_());
    auto* param = b.FunctionParam("param", ty.u32());
    func->SetParams({param});
    b.Append(func->Block(), [&] {
        b.Let("a", 1_u);
        b.Let("b", 2_u);
        b.Let("c", 3_u);
    });
    b.InsertInBlockAfter(param, [&] {
        b.Let("d", 4_u);
        b.Let("e", 5_u);
        b.Let("f", 6_u);
    });
    EXPECT_EQ(str(), R"(
%foo = func(%param:u32):void {
  $B1: {
    %d:u32 = let 4u
    %e:u32 = let 5u
    %f:u32 = let 6u
    %a:u32 = let 1u
    %b:u32 = let 2u
    %c:u32 = let 3u
  }
}
)");
}

TEST_F(IR_BuilderTest, InsertInBlockAfter_Param_EmptyFunction) {
    auto* func = b.Function("foo", ty.void_());
    auto* param = b.FunctionParam("param", ty.u32());
    func->SetParams({param});
    b.InsertInBlockAfter(param, [&] {
        b.Let("a", 1_u);
        b.Let("b", 2_u);
        b.Let("c", 3_u);
    });
    EXPECT_EQ(str(), R"(
%foo = func(%param:u32):void {
  $B1: {
    %a:u32 = let 1u
    %b:u32 = let 2u
    %c:u32 = let 3u
  }
}
)");
}

TEST_F(IR_BuilderTest, InsertInBlockAfter_BlockParam) {
    auto* func = b.Function("foo", ty.void_());
    b.Append(func->Block(), [&] {
        auto* loop = b.Loop();
        auto* param = b.BlockParam("param", ty.u32());
        loop->Body()->SetParams({param});
        b.Append(loop->Body(), [&] {
            b.Let("a", 1_u);
            b.Let("b", 2_u);
            b.Let("c", 3_u);
        });
        b.InsertInBlockAfter(param, [&] {
            b.Let("d", 4_u);
            b.Let("e", 5_u);
            b.Let("f", 6_u);
        });
    });
    EXPECT_EQ(str(), R"(
%foo = func():void {
  $B1: {
    loop [b: $B2] {  # loop_1
      $B2 (%param:u32): {  # body
        %d:u32 = let 4u
        %e:u32 = let 5u
        %f:u32 = let 6u
        %a:u32 = let 1u
        %b:u32 = let 2u
        %c:u32 = let 3u
      }
    }
  }
}
)");
}

TEST_F(IR_BuilderTest, InsertInBlockAfter_BlockParam_EmptyBlock) {
    auto* func = b.Function("foo", ty.void_());
    b.Append(func->Block(), [&] {
        auto* loop = b.Loop();
        auto* param = b.BlockParam("param", ty.u32());
        loop->Body()->SetParams({param});
        b.InsertInBlockAfter(param, [&] {
            b.Let("a", 1_u);
            b.Let("b", 2_u);
            b.Let("c", 3_u);
        });
    });
    EXPECT_EQ(str(), R"(
%foo = func():void {
  $B1: {
    loop [b: $B2] {  # loop_1
      $B2 (%param:u32): {  # body
        %a:u32 = let 1u
        %b:u32 = let 2u
        %c:u32 = let 3u
      }
    }
  }
}
)");
}

}  // namespace
}  // namespace tint::core::ir
