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// Copyright 2020 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// 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.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "src/tint/lang/wgsl/writer/ast_printer/helper_test.h"
#include "gmock/gmock.h"
namespace tint::wgsl::writer {
namespace {
using WgslASTPrinterTest = TestHelper;
TEST_F(WgslASTPrinterTest, Emit_If) {
GlobalVar("cond", ty.bool_(), core::AddressSpace::kPrivate);
auto* cond = Expr("cond");
auto* body = Block(Return());
auto* i = If(cond, body);
WrapInFunction(i);
ASTPrinter& gen = Build();
gen.IncrementIndent();
gen.EmitStatement(i);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(gen.Result(), R"( if (cond) {
return;
}
)");
}
TEST_F(WgslASTPrinterTest, Emit_IfWithElseIf) {
GlobalVar("cond", ty.bool_(), core::AddressSpace::kPrivate);
GlobalVar("else_cond", ty.bool_(), core::AddressSpace::kPrivate);
auto* else_cond = Expr("else_cond");
auto* else_body = Block(Return());
auto* cond = Expr("cond");
auto* body = Block(Return());
auto* i = If(cond, body, Else(If(else_cond, else_body)));
WrapInFunction(i);
ASTPrinter& gen = Build();
gen.IncrementIndent();
gen.EmitStatement(i);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(gen.Result(), R"( if (cond) {
return;
} else if (else_cond) {
return;
}
)");
}
TEST_F(WgslASTPrinterTest, Emit_IfWithElse) {
GlobalVar("cond", ty.bool_(), core::AddressSpace::kPrivate);
auto* else_body = Block(Return());
auto* cond = Expr("cond");
auto* body = Block(Return());
auto* i = If(cond, body, Else(else_body));
WrapInFunction(i);
ASTPrinter& gen = Build();
gen.IncrementIndent();
gen.EmitStatement(i);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(gen.Result(), R"( if (cond) {
return;
} else {
return;
}
)");
}
TEST_F(WgslASTPrinterTest, Emit_IfWithMultiple) {
GlobalVar("cond", ty.bool_(), core::AddressSpace::kPrivate);
GlobalVar("else_cond", ty.bool_(), core::AddressSpace::kPrivate);
auto* else_cond = Expr("else_cond");
auto* else_body = Block(Return());
auto* else_body_2 = Block(Return());
auto* cond = Expr("cond");
auto* body = Block(Return());
auto* i = If(cond, body, Else(If(else_cond, else_body, Else(else_body_2))));
WrapInFunction(i);
ASTPrinter& gen = Build();
gen.IncrementIndent();
gen.EmitStatement(i);
EXPECT_THAT(gen.Diagnostics(), testing::IsEmpty());
EXPECT_EQ(gen.Result(), R"( if (cond) {
return;
} else if (else_cond) {
return;
} else {
return;
}
)");
}
} // namespace
} // namespace tint::wgsl::writer