mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Jon Ross-Perkins
5a90f660b9
This is just a simplification: I think these different forms are getting in the way more than they're helping, particularly as I was looking into namespace functionality. The handling in semantics can be identical, providing a more uniform behavior.
124 lines
4.3 KiB
C++
124 lines
4.3 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 "toolchain/parser/parse_tree.h"
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include <forward_list>
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#include "testing/util/test_raw_ostream.h"
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#include "toolchain/common/yaml_test_helpers.h"
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#include "toolchain/diagnostics/diagnostic_emitter.h"
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#include "toolchain/diagnostics/mocks.h"
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#include "toolchain/lexer/tokenized_buffer.h"
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namespace Carbon::Testing {
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namespace {
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using ::testing::ElementsAre;
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class ParseTreeTest : public ::testing::Test {
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protected:
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auto GetSourceBuffer(llvm::StringRef t) -> SourceBuffer& {
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CARBON_CHECK(fs.addFile("test.carbon", /*ModificationTime=*/0,
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llvm::MemoryBuffer::getMemBuffer(t)));
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source_storage.push_front(
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std::move(*SourceBuffer::CreateFromFile(fs, "test.carbon")));
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return source_storage.front();
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}
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auto GetTokenizedBuffer(llvm::StringRef t) -> TokenizedBuffer& {
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token_storage.push_front(
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TokenizedBuffer::Lex(GetSourceBuffer(t), consumer));
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return token_storage.front();
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}
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llvm::vfs::InMemoryFileSystem fs;
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std::forward_list<SourceBuffer> source_storage;
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std::forward_list<TokenizedBuffer> token_storage;
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DiagnosticConsumer& consumer = ConsoleDiagnosticConsumer();
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};
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TEST_F(ParseTreeTest, IsValid) {
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TokenizedBuffer tokens = GetTokenizedBuffer("");
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ParseTree tree = ParseTree::Parse(tokens, consumer, /*vlog_stream=*/nullptr);
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EXPECT_TRUE((*tree.postorder().begin()).is_valid());
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}
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TEST_F(ParseTreeTest, PrintPostorderAsYAML) {
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TokenizedBuffer tokens = GetTokenizedBuffer("fn F();");
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ParseTree tree = ParseTree::Parse(tokens, consumer, /*vlog_stream=*/nullptr);
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EXPECT_FALSE(tree.has_errors());
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TestRawOstream print_stream;
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tree.Print(print_stream);
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auto file = Yaml::SequenceValue{
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Yaml::MappingValue{{"kind", "FunctionIntroducer"}, {"text", "fn"}},
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Yaml::MappingValue{{"kind", "Identifier"}, {"text", "F"}},
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Yaml::MappingValue{{"kind", "ParameterListStart"}, {"text", "("}},
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Yaml::MappingValue{
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{"kind", "ParameterList"}, {"text", ")"}, {"subtree_size", "2"}},
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Yaml::MappingValue{{"kind", "FunctionDeclaration"},
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{"text", ";"},
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{"subtree_size", "5"}},
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Yaml::MappingValue{{"kind", "FileEnd"}, {"text", ""}},
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};
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EXPECT_THAT(Yaml::Value::FromText(print_stream.TakeStr()), ElementsAre(file));
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}
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TEST_F(ParseTreeTest, PrintPreorderAsYAML) {
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TokenizedBuffer tokens = GetTokenizedBuffer("fn F();");
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ParseTree tree = ParseTree::Parse(tokens, consumer, /*vlog_stream=*/nullptr);
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EXPECT_FALSE(tree.has_errors());
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TestRawOstream print_stream;
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tree.Print(print_stream, /*preorder=*/true);
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auto parameter_list = Yaml::SequenceValue{
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Yaml::MappingValue{
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{"node_index", "2"}, {"kind", "ParameterListStart"}, {"text", "("}},
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};
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auto function_decl = Yaml::SequenceValue{
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Yaml::MappingValue{
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{"node_index", "0"}, {"kind", "FunctionIntroducer"}, {"text", "fn"}},
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Yaml::MappingValue{
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{"node_index", "1"}, {"kind", "Identifier"}, {"text", "F"}},
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Yaml::MappingValue{{"node_index", "3"},
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{"kind", "ParameterList"},
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{"text", ")"},
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{"subtree_size", "2"},
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{"children", parameter_list}},
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};
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auto file = Yaml::SequenceValue{
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Yaml::MappingValue{{"node_index", "4"},
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{"kind", "FunctionDeclaration"},
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{"text", ";"},
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{"subtree_size", "5"},
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{"children", function_decl}},
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Yaml::MappingValue{
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{"node_index", "5"}, {"kind", "FileEnd"}, {"text", ""}},
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};
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EXPECT_THAT(Yaml::Value::FromText(print_stream.TakeStr()), ElementsAre(file));
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}
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TEST_F(ParseTreeTest, HighRecursion) {
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std::string code = "fn Foo() { return ";
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code.append(10000, '(');
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code.append(10000, ')');
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code += "; }";
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TokenizedBuffer tokens = GetTokenizedBuffer(code);
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ASSERT_FALSE(tokens.has_errors());
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Testing::MockDiagnosticConsumer consumer;
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ParseTree tree = ParseTree::Parse(tokens, consumer, /*vlog_stream=*/nullptr);
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EXPECT_FALSE(tree.has_errors());
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}
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} // namespace
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} // namespace Carbon::Testing
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