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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
8c60ad2e19
In the process, switch to an unambiguous grammar, using the precedence-climbing method for operator precedence (suitably modified to handle a partial precedence order) rather than Bison %precedence / %prec.
37 lines
1.3 KiB
C++
37 lines
1.3 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include "executable_semantics/ast/ast_test_matchers.h"
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#include "executable_semantics/syntax/parse.h"
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#include "executable_semantics/syntax/parse_test_matchers.h"
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namespace Carbon::Testing {
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namespace {
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using ::testing::ElementsAre;
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TEST(UnimplementedExampleTest, VerifyPrecedence) {
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static constexpr std::string_view Program = R"(
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package ExecutableSemanticsTest api;
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fn Main() -> i32 {
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return 1 __unimplemented_example_infix 2 == 3;
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}
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)";
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Arena arena;
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EXPECT_THAT(ParseFromString(&arena, "dummy.carbon", Program, false),
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ParsedAs(ASTDeclarations(
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ElementsAre(MatchesFunctionDeclaration().WithBody(
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BlockContentsAre(ElementsAre(MatchesReturn(MatchesEq(
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MatchesUnimplementedExpression(
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"ExampleInfix", ElementsAre(MatchesLiteral(1),
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MatchesLiteral(2))),
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MatchesLiteral(3))))))))));
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}
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} // namespace
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} // namespace Carbon::Testing
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