mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Jeremy G. Siek
8924f5620b
* changed union of Statement to be private * changed the union in Expression to be private * changed union in Value to be private * changed AST constructors to be static methods * updates to syntax unit tests
115 lines
4.0 KiB
C++
115 lines
4.0 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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const 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->GetTuple().fields->size(), 0);
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}
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TEST(ParenContentsTest, EmptyAsTuple) {
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ParenContents contents;
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const 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->GetTuple().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(
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{{.expression = Expression::MakeInt(/*line_num=*/2, 42)}},
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ParenContents::HasTrailingComma::No);
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const 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(
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{{.expression = Expression::MakeInt(/*line_num=*/2, 42)}},
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ParenContents::HasTrailingComma::No);
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const 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<FieldInitializer> fields = *tuple->GetTuple().fields;
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ASSERT_EQ(fields.size(), 1);
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EXPECT_EQ(fields[0].expression->tag, ExpressionKind::Integer);
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}
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TEST(ParenContentsTest, UnaryWithCommaAsExpression) {
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ParenContents contents(
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{{.expression = Expression::MakeInt(/*line_num=*/2, 42)}},
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ParenContents::HasTrailingComma::Yes);
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const 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<FieldInitializer> fields = *expression->GetTuple().fields;
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ASSERT_EQ(fields.size(), 1);
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EXPECT_EQ(fields[0].expression->tag, ExpressionKind::Integer);
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}
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TEST(ParenContentsTest, UnaryWithCommaAsTuple) {
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ParenContents contents(
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{{.expression = Expression::MakeInt(/*line_num=*/2, 42)}},
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ParenContents::HasTrailingComma::Yes);
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const 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<FieldInitializer> fields = *tuple->GetTuple().fields;
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ASSERT_EQ(fields.size(), 1);
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EXPECT_EQ(fields[0].expression->tag, ExpressionKind::Integer);
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}
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TEST(ParenContentsTest, BinaryAsExpression) {
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ParenContents contents(
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{{.expression = Expression::MakeInt(/*line_num=*/2, 42)},
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{.expression = Expression::MakeInt(/*line_num=*/3, 42)}},
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ParenContents::HasTrailingComma::Yes);
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const 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<FieldInitializer> fields = *expression->GetTuple().fields;
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ASSERT_EQ(fields.size(), 2);
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EXPECT_EQ(fields[0].expression->tag, ExpressionKind::Integer);
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EXPECT_EQ(fields[1].expression->tag, ExpressionKind::Integer);
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}
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TEST(ParenContentsTest, BinaryAsTuple) {
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ParenContents contents(
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{{.expression = Expression::MakeInt(/*line_num=*/2, 42)},
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{.expression = Expression::MakeInt(/*line_num=*/3, 42)}},
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ParenContents::HasTrailingComma::Yes);
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const 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<FieldInitializer> fields = *tuple->GetTuple().fields;
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ASSERT_EQ(fields.size(), 2);
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EXPECT_EQ(fields[0].expression->tag, ExpressionKind::Integer);
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EXPECT_EQ(fields[1].expression->tag, ExpressionKind::Integer);
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}
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} // namespace
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} // namespace Carbon
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