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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-PerkinsandRichard Smith
a93e621488
This adds vfs support to the toolchain, allowing Driver to take in-memory inputs in tests. As a consequence, I'm simplifying SourceBuffer: rather than allowing tests to pass in their own memory buffer, I'm using InMemoryFileSystem to push for greater consistency with production code. This does hit a quirk where I need to be careful about null terminator handling because fuzzer imports don't always have one, but that's probably more robust anyways. Co-authored-by: Richard Smith <richard@metafoo.co.uk>
86 lines
3.4 KiB
C++
86 lines
3.4 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/semantics/semantics_ir.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 "toolchain/common/yaml_test_helpers.h"
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#include "toolchain/diagnostics/diagnostic_emitter.h"
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#include "toolchain/lexer/tokenized_buffer.h"
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#include "toolchain/source/source_buffer.h"
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namespace Carbon::Testing {
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namespace {
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using ::testing::_;
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using ::testing::AllOf;
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using ::testing::Contains;
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using ::testing::Each;
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using ::testing::ElementsAre;
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using ::testing::IsEmpty;
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using ::testing::MatchesRegex;
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using ::testing::Pair;
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TEST(SemanticsIRTest, YAML) {
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DiagnosticConsumer& consumer = ConsoleDiagnosticConsumer();
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llvm::vfs::InMemoryFileSystem fs;
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CARBON_CHECK(fs.addFile("test.carbon", /*ModificationTime=*/0,
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llvm::MemoryBuffer::getMemBuffer("var x: i32 = 0;")));
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ErrorOr<SourceBuffer> source =
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SourceBuffer::CreateFromFile(fs, "test.carbon");
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TokenizedBuffer tokens = TokenizedBuffer::Lex(*source, consumer);
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ParseTree parse_tree =
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ParseTree::Parse(tokens, consumer, /*vlog_stream=*/nullptr);
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SemanticsIR builtin_ir = SemanticsIR::MakeBuiltinIR();
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SemanticsIR semantics_ir = SemanticsIR::MakeFromParseTree(
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builtin_ir, tokens, parse_tree, consumer, /*vlog_stream=*/nullptr);
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std::string print_output;
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llvm::raw_string_ostream print_stream(print_output);
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semantics_ir.Print(print_stream);
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print_stream.flush();
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// Matches the ID of a node. The numbers may change because of builtin
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// cross-references, so this code is only doing loose structural checks.
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auto node_id = Yaml::Scalar(MatchesRegex(R"(node\+\d+)"));
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auto node_builtin = Yaml::Scalar(MatchesRegex(R"(node\w+)"));
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auto type_id = Yaml::Scalar(MatchesRegex(R"(type\d+)"));
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EXPECT_THAT(
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Yaml::Value::FromText(print_output),
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ElementsAre(Yaml::Mapping(ElementsAre(
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Pair("cross_reference_irs_size", "1"),
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Pair("functions", Yaml::Sequence(IsEmpty())),
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Pair("integer_literals", Yaml::Sequence(ElementsAre("0"))),
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Pair("real_literals", Yaml::Sequence(IsEmpty())),
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Pair("strings", Yaml::Sequence(ElementsAre("x"))),
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Pair("types", Yaml::Sequence(ElementsAre(node_builtin))),
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Pair("nodes",
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Yaml::Sequence(AllOf(
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// kind is required, other parts are optional.
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Each(Yaml::Mapping(Contains(Pair("kind", _)))),
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// A 0-arg node.
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Contains(Yaml::Mapping(ElementsAre(
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Pair("kind", "VarStorage"), Pair("type", type_id)))),
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// A 1-arg node.
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Contains(Yaml::Mapping(ElementsAre(
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Pair("kind", "IntegerLiteral"), Pair("arg0", "int0"),
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Pair("type", type_id)))),
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// A 2-arg node.
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Contains(Yaml::Mapping(ElementsAre(
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Pair("kind", "BindName"), Pair("arg0", "str0"),
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Pair("arg1", node_id), Pair("type", type_id))))))),
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// This production has only one node block.
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Pair("node_blocks",
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Yaml::Sequence(ElementsAre(Yaml::Sequence(IsEmpty()),
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Yaml::Sequence(Each(node_id)))))))));
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}
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} // namespace
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} // namespace Carbon::Testing
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