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873f92e741
This CL converts the `assignment_statement` to `variable_updating_statement`. Some more test cases are added around the phony assignment and usage of compound operators. The `lhs_expression` and `core_lhs_expression` are converted to return `Maybe`s. Bug: tint:1633 Change-Id: Iaed6373e2f202609adf341b57dc9027e5a04af34 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/99380 Commit-Queue: Dan Sinclair <dsinclair@chromium.org> Reviewed-by: Ben Clayton <bclayton@google.com> Kokoro: Kokoro <noreply+kokoro@google.com>
139 lines
4.6 KiB
C++
139 lines
4.6 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/reader/wgsl/parser_impl_test_helper.h"
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namespace tint::reader::wgsl {
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namespace {
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TEST_F(ParserImplTest, LHSExpression_NoPrefix) {
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auto p = parser("a");
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auto e = p->lhs_expression();
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ASSERT_FALSE(p->has_error()) << p->error();
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ASSERT_FALSE(e.errored);
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EXPECT_TRUE(e.matched);
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ASSERT_NE(e.value, nullptr);
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ASSERT_TRUE(e->Is<ast::IdentifierExpression>());
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}
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TEST_F(ParserImplTest, LHSExpression_NoMatch) {
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auto p = parser("123");
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auto e = p->lhs_expression();
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ASSERT_FALSE(p->has_error()) << p->error();
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ASSERT_FALSE(e.errored);
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EXPECT_FALSE(e.matched);
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ASSERT_EQ(e.value, nullptr);
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}
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TEST_F(ParserImplTest, LHSExpression_And) {
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auto p = parser("&a");
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auto e = p->lhs_expression();
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ASSERT_FALSE(p->has_error()) << p->error();
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ASSERT_FALSE(e.errored);
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EXPECT_TRUE(e.matched);
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ASSERT_NE(e.value, nullptr);
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ASSERT_TRUE(e->Is<ast::UnaryOpExpression>());
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auto* u = e->As<ast::UnaryOpExpression>();
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EXPECT_EQ(u->op, ast::UnaryOp::kAddressOf);
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EXPECT_TRUE(u->expr->Is<ast::IdentifierExpression>());
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}
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TEST_F(ParserImplTest, LHSExpression_Star) {
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auto p = parser("*a");
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auto e = p->lhs_expression();
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ASSERT_FALSE(p->has_error()) << p->error();
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ASSERT_FALSE(e.errored);
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EXPECT_TRUE(e.matched);
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ASSERT_NE(e.value, nullptr);
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ASSERT_TRUE(e->Is<ast::UnaryOpExpression>());
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auto* u = e->As<ast::UnaryOpExpression>();
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EXPECT_EQ(u->op, ast::UnaryOp::kIndirection);
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EXPECT_TRUE(u->expr->Is<ast::IdentifierExpression>());
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}
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TEST_F(ParserImplTest, LHSExpression_InvalidCoreLHSExpr) {
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auto p = parser("*123");
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auto e = p->lhs_expression();
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ASSERT_TRUE(p->has_error());
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ASSERT_TRUE(e.errored);
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EXPECT_FALSE(e.matched);
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ASSERT_EQ(e.value, nullptr);
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EXPECT_EQ(p->error(), "1:2: missing expression");
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}
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TEST_F(ParserImplTest, LHSExpression_Multiple) {
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auto p = parser("*&**&&*a");
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auto e = p->lhs_expression();
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ASSERT_FALSE(p->has_error()) << p->error();
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ASSERT_FALSE(e.errored);
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EXPECT_TRUE(e.matched);
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ASSERT_NE(e.value, nullptr);
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std::vector<ast::UnaryOp> results = {ast::UnaryOp::kIndirection, ast::UnaryOp::kAddressOf,
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ast::UnaryOp::kIndirection, ast::UnaryOp::kIndirection,
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ast::UnaryOp::kAddressOf, ast::UnaryOp::kAddressOf,
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ast::UnaryOp::kIndirection};
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auto* expr = e.value;
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for (auto op : results) {
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ASSERT_TRUE(expr->Is<ast::UnaryOpExpression>());
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auto* u = expr->As<ast::UnaryOpExpression>();
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EXPECT_EQ(u->op, op);
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expr = u->expr;
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}
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EXPECT_TRUE(expr->Is<ast::IdentifierExpression>());
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}
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TEST_F(ParserImplTest, LHSExpression_PostfixExpression) {
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auto p = parser("*a.foo");
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auto e = p->lhs_expression();
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ASSERT_FALSE(p->has_error()) << p->error();
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ASSERT_FALSE(e.errored);
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EXPECT_TRUE(e.matched);
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ASSERT_NE(e.value, nullptr);
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ASSERT_TRUE(e->Is<ast::MemberAccessorExpression>());
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auto* access = e->As<ast::MemberAccessorExpression>();
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ASSERT_TRUE(access->structure->Is<ast::UnaryOpExpression>());
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auto* u = access->structure->As<ast::UnaryOpExpression>();
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EXPECT_EQ(u->op, ast::UnaryOp::kIndirection);
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ASSERT_TRUE(u->expr->Is<ast::IdentifierExpression>());
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auto* struct_ident = u->expr->As<ast::IdentifierExpression>();
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EXPECT_EQ(struct_ident->symbol, p->builder().Symbols().Get("a"));
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ASSERT_TRUE(access->member->Is<ast::IdentifierExpression>());
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auto* member_ident = access->member->As<ast::IdentifierExpression>();
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EXPECT_EQ(member_ident->symbol, p->builder().Symbols().Get("foo"));
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}
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TEST_F(ParserImplTest, LHSExpression_InvalidPostfixExpression) {
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auto p = parser("*a.if");
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auto e = p->lhs_expression();
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ASSERT_TRUE(p->has_error());
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ASSERT_TRUE(e.errored);
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EXPECT_FALSE(e.matched);
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ASSERT_EQ(e.value, nullptr);
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EXPECT_EQ(p->error(), "1:4: expected identifier for member accessor");
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}
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} // namespace
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} // namespace tint::reader::wgsl
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