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49d1a2d950
This CL adds parsing for the WGSL `while` statement. Bug: tint:1425 Change-Id: Ibce5e28568935ca4f51b5ac33e7a60af7a916b4a Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/93540 Reviewed-by: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com> Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
130 lines
2.1 KiB
C++
130 lines
2.1 KiB
C++
// Copyright 2022 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "src/tint/transform/while_to_loop.h"
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#include "src/tint/transform/test_helper.h"
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namespace tint::transform {
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namespace {
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using WhileToLoopTest = TransformTest;
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TEST_F(WhileToLoopTest, ShouldRunEmptyModule) {
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auto* src = R"()";
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EXPECT_FALSE(ShouldRun<WhileToLoop>(src));
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}
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TEST_F(WhileToLoopTest, ShouldRunHasWhile) {
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auto* src = R"(
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fn f() {
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while (true) {
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break;
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}
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}
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)";
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EXPECT_TRUE(ShouldRun<WhileToLoop>(src));
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}
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TEST_F(WhileToLoopTest, EmptyModule) {
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auto* src = "";
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auto* expect = src;
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auto got = Run<WhileToLoop>(src);
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EXPECT_EQ(expect, str(got));
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}
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// Test an empty for loop.
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TEST_F(WhileToLoopTest, Empty) {
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auto* src = R"(
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fn f() {
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while (true) {
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break;
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}
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}
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)";
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auto* expect = R"(
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fn f() {
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loop {
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if (!(true)) {
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break;
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}
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break;
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}
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}
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)";
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auto got = Run<WhileToLoop>(src);
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EXPECT_EQ(expect, str(got));
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}
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// Test a for loop with non-empty body.
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TEST_F(WhileToLoopTest, Body) {
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auto* src = R"(
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fn f() {
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while (true) {
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discard;
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}
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}
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)";
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auto* expect = R"(
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fn f() {
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loop {
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if (!(true)) {
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break;
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}
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discard;
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}
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}
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)";
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auto got = Run<WhileToLoop>(src);
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EXPECT_EQ(expect, str(got));
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}
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// Test a loop with a break condition
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TEST_F(WhileToLoopTest, BreakCondition) {
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auto* src = R"(
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fn f() {
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while (0 == 1) {
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}
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}
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)";
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auto* expect = R"(
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fn f() {
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loop {
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if (!((0 == 1))) {
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break;
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}
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}
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}
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)";
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auto got = Run<WhileToLoop>(src);
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EXPECT_EQ(expect, str(got));
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}
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} // namespace
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} // namespace tint::transform
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