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// Copyright 2023 The Dawn & Tint Authors
//
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// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
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#include "src/tint/lang/core/ir/traverse.h"
#include "gmock/gmock.h"
#include "src/tint/lang/core/ir/builder.h"
#include "src/tint/lang/core/ir/ir_helper_test.h"
using namespace tint::core::number_suffixes; // NOLINT
using namespace tint::core::fluent_types; // NOLINT
namespace tint::core::ir {
namespace {
using IR_TraverseTest = IRTestHelper;
TEST_F(IR_TraverseTest, Blocks) {
Vector<Instruction*, 8> expect;
auto fn = b.Function("f", ty.void_());
b.Append(fn->Block(), [&] {
expect.Push(b.Var<function, i32>());
auto* if_ = b.If(true);
expect.Push(if_);
b.Append(if_->True(), [&] {
auto* if2_ = b.If(true);
expect.Push(if2_);
b.Append(if2_->True(), [&] { expect.Push(b.ExitIf(if2_)); });
expect.Push(b.ExitIf(if_));
});
b.Append(if_->False(), [&] { expect.Push(b.ExitIf(if_)); });
auto* loop_ = b.Loop();
expect.Push(loop_);
b.Append(loop_->Initializer(), [&] { expect.Push(b.NextIteration(loop_)); });
b.Append(loop_->Body(), [&] {
auto* if2_ = b.If(true);
expect.Push(if2_);
b.Append(if2_->True(), [&] { expect.Push(b.ExitIf(if2_)); });
expect.Push(b.Continue(loop_));
});
b.Append(loop_->Continuing(), [&] { expect.Push(b.NextIteration(loop_)); });
auto* switch_ = b.Switch(1_i);
expect.Push(switch_);
auto* case_0 = b.Case(switch_, {b.Constant(0_i)});
b.Append(case_0, [&] { expect.Push(b.Var<function, i32>()); });
auto* case_1 = b.Case(switch_, {b.Constant(1_i)});
b.Append(case_1, [&] { expect.Push(b.Var<function, i32>()); });
expect.Push(b.Var<function, i32>());
});
Vector<Instruction*, 8> got;
Traverse(fn->Block(), [&](Instruction* inst) { got.Push(inst); });
EXPECT_THAT(got, testing::ContainerEq(expect));
}
TEST_F(IR_TraverseTest, Filtered) {
Vector<ExitIf*, 8> expect;
auto fn = b.Function("f", ty.void_());
b.Append(fn->Block(), [&] {
b.Var<function, i32>();
auto* if_ = b.If(true);
b.Append(if_->True(), [&] {
auto* if2_ = b.If(true);
b.Append(if2_->True(), [&] { expect.Push(b.ExitIf(if2_)); });
expect.Push(b.ExitIf(if_));
});
b.Append(if_->False(), [&] { expect.Push(b.ExitIf(if_)); });
auto* loop_ = b.Loop();
b.Append(loop_->Initializer(), [&] { b.NextIteration(loop_); });
b.Append(loop_->Body(), [&] {
auto* if2_ = b.If(true);
b.Append(if2_->True(), [&] { expect.Push(b.ExitIf(if2_)); });
b.Continue(loop_);
});
b.Append(loop_->Continuing(), [&] { b.NextIteration(loop_); });
auto* switch_ = b.Switch(1_i);
auto* case_0 = b.Case(switch_, {b.Constant(0_i)});
b.Append(case_0, [&] { b.Var<function, i32>(); });
auto* case_1 = b.Case(switch_, {b.Constant(1_i)});
b.Append(case_1, [&] { b.Var<function, i32>(); });
b.Var<function, i32>();
});
Vector<ExitIf*, 8> got;
Traverse(fn->Block(), [&](ExitIf* inst) { got.Push(inst); });
EXPECT_THAT(got, testing::ContainerEq(expect));
}
} // namespace
} // namespace tint::core::ir