mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-25 10:00:11 +01:00
Geoff Romer
80f035874d
* Move nontrivial logic out of `parser.ypp` into `FieldList`, rename it to `ParenContents`, make it a class, and add tests * Use a `FieldInitializer` struct instead of `std::pair<std::string, Expression*>` to represent the fields of a tuple
114 lines
4.1 KiB
C++
114 lines
4.1 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 "executable_semantics/syntax/paren_contents.h"
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#include "gtest/gtest.h"
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namespace Carbon {
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namespace {
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TEST(ParenContentsTest, EmptyAsExpression) {
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ParenContents contents;
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Expression* expression = contents.AsExpression(/*line_num=*/1);
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EXPECT_EQ(expression->line_num, 1);
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ASSERT_EQ(expression->tag, ExpressionKind::Tuple);
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EXPECT_EQ(expression->u.tuple.fields->size(), 0);
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}
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TEST(ParenContentsTest, EmptyAsTuple) {
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ParenContents contents;
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Expression* tuple = contents.AsTuple(/*line_num=*/1);
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EXPECT_EQ(tuple->line_num, 1);
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ASSERT_EQ(tuple->tag, ExpressionKind::Tuple);
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EXPECT_EQ(tuple->u.tuple.fields->size(), 0);
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}
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TEST(ParenContentsTest, UnaryNoCommaAsExpression) {
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// Equivalent to a code fragment like
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// ```
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// (
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// 42
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// )
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// ```
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ParenContents contents({{.expression = MakeInt(/*line_num=*/2, 42)}},
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ParenContents::HasTrailingComma::No);
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Expression* expression = contents.AsExpression(/*line_num=*/1);
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EXPECT_EQ(expression->line_num, 2);
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ASSERT_EQ(expression->tag, ExpressionKind::Integer);
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}
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TEST(ParenContentsTest, UnaryNoCommaAsTuple) {
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ParenContents contents({{.expression = MakeInt(/*line_num=*/2, 42)}},
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ParenContents::HasTrailingComma::No);
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Expression* tuple = contents.AsTuple(/*line_num=*/1);
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EXPECT_EQ(tuple->line_num, 1);
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ASSERT_EQ(tuple->tag, ExpressionKind::Tuple);
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std::vector<std::pair<std::string, Expression*>> fields =
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*tuple->u.tuple.fields;
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ASSERT_EQ(fields.size(), 1);
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EXPECT_EQ(fields[0].second->tag, ExpressionKind::Integer);
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}
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TEST(ParenContentsTest, UnaryWithCommaAsExpression) {
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ParenContents contents({{.expression = MakeInt(/*line_num=*/2, 42)}},
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ParenContents::HasTrailingComma::Yes);
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Expression* expression = contents.AsExpression(/*line_num=*/1);
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EXPECT_EQ(expression->line_num, 1);
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ASSERT_EQ(expression->tag, ExpressionKind::Tuple);
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std::vector<std::pair<std::string, Expression*>> fields =
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*expression->u.tuple.fields;
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ASSERT_EQ(fields.size(), 1);
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EXPECT_EQ(fields[0].second->tag, ExpressionKind::Integer);
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}
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TEST(ParenContentsTest, UnaryWithCommaAsTuple) {
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ParenContents contents({{.expression = MakeInt(/*line_num=*/2, 42)}},
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ParenContents::HasTrailingComma::Yes);
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Expression* tuple = contents.AsTuple(/*line_num=*/1);
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EXPECT_EQ(tuple->line_num, 1);
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ASSERT_EQ(tuple->tag, ExpressionKind::Tuple);
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std::vector<std::pair<std::string, Expression*>> fields =
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*tuple->u.tuple.fields;
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ASSERT_EQ(fields.size(), 1);
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EXPECT_EQ(fields[0].second->tag, ExpressionKind::Integer);
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}
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TEST(ParenContentsTest, BinaryAsExpression) {
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ParenContents contents({{.expression = MakeInt(/*line_num=*/2, 42)},
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{.expression = MakeInt(/*line_num=*/3, 42)}},
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ParenContents::HasTrailingComma::Yes);
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Expression* expression = contents.AsExpression(/*line_num=*/1);
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EXPECT_EQ(expression->line_num, 1);
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ASSERT_EQ(expression->tag, ExpressionKind::Tuple);
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std::vector<std::pair<std::string, Expression*>> fields =
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*expression->u.tuple.fields;
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ASSERT_EQ(fields.size(), 2);
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EXPECT_EQ(fields[0].second->tag, ExpressionKind::Integer);
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EXPECT_EQ(fields[1].second->tag, ExpressionKind::Integer);
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}
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TEST(ParenContentsTest, BinaryAsTuple) {
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ParenContents contents({{.expression = MakeInt(/*line_num=*/2, 42)},
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{.expression = MakeInt(/*line_num=*/3, 42)}},
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ParenContents::HasTrailingComma::Yes);
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Expression* tuple = contents.AsTuple(/*line_num=*/1);
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EXPECT_EQ(tuple->line_num, 1);
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ASSERT_EQ(tuple->tag, ExpressionKind::Tuple);
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std::vector<std::pair<std::string, Expression*>> fields =
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*tuple->u.tuple.fields;
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ASSERT_EQ(fields.size(), 2);
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EXPECT_EQ(fields[0].second->tag, ExpressionKind::Integer);
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EXPECT_EQ(fields[1].second->tag, ExpressionKind::Integer);
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}
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} // namespace
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} // namespace Carbon
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