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Define a base class for all AST nodes. (#947)

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Also implement code-generation to manage the resulting boilerplate.
This commit is contained in:
Geoff Romer
2021-11-16 11:54:47 -08:00
committed by GitHub
parent d854fb93cb
commit 7a5b8434c8
24 changed files with 965 additions and 543 deletions
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executable_semantics/ast/expression_test.cpp
+9 -9
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@@ -21,7 +21,7 @@ using testing::ElementsAre;
using testing::IsEmpty;
// Matches any `IntLiteral`.
MATCHER(IntField, "") { return arg->kind() == Expression::Kind::IntLiteral; }
MATCHER(IntField, "") { return arg->kind() == ExpressionKind::IntLiteral; }
static auto FakeSourceLoc(int line_num) -> SourceLocation {
return SourceLocation("<test>", line_num);
@@ -38,7 +38,7 @@ TEST_F(ExpressionTest, EmptyAsExpression) {
Nonnull<const Expression*> expression =
ExpressionFromParenContents(&arena, FakeSourceLoc(1), contents);
EXPECT_EQ(expression->source_loc(), FakeSourceLoc(1));
ASSERT_EQ(expression->kind(), Expression::Kind::TupleLiteral);
ASSERT_EQ(expression->kind(), ExpressionKind::TupleLiteral);
EXPECT_THAT(cast<TupleLiteral>(*expression).fields(), IsEmpty());
}
@@ -48,7 +48,7 @@ TEST_F(ExpressionTest, EmptyAsTuple) {
Nonnull<const Expression*> tuple =
TupleExpressionFromParenContents(&arena, FakeSourceLoc(1), contents);
EXPECT_EQ(tuple->source_loc(), FakeSourceLoc(1));
ASSERT_EQ(tuple->kind(), Expression::Kind::TupleLiteral);
ASSERT_EQ(tuple->kind(), ExpressionKind::TupleLiteral);
EXPECT_THAT(cast<TupleLiteral>(*tuple).fields(), IsEmpty());
}
@@ -66,7 +66,7 @@ TEST_F(ExpressionTest, UnaryNoCommaAsExpression) {
Nonnull<const Expression*> expression =
ExpressionFromParenContents(&arena, FakeSourceLoc(1), contents);
EXPECT_EQ(expression->source_loc(), FakeSourceLoc(2));
ASSERT_EQ(expression->kind(), Expression::Kind::IntLiteral);
ASSERT_EQ(expression->kind(), ExpressionKind::IntLiteral);
}
TEST_F(ExpressionTest, UnaryNoCommaAsTuple) {
@@ -77,7 +77,7 @@ TEST_F(ExpressionTest, UnaryNoCommaAsTuple) {
Nonnull<const Expression*> tuple =
TupleExpressionFromParenContents(&arena, FakeSourceLoc(1), contents);
EXPECT_EQ(tuple->source_loc(), FakeSourceLoc(1));
ASSERT_EQ(tuple->kind(), Expression::Kind::TupleLiteral);
ASSERT_EQ(tuple->kind(), ExpressionKind::TupleLiteral);
EXPECT_THAT(cast<TupleLiteral>(*tuple).fields(), ElementsAre(IntField()));
}
@@ -89,7 +89,7 @@ TEST_F(ExpressionTest, UnaryWithCommaAsExpression) {
Nonnull<const Expression*> expression =
ExpressionFromParenContents(&arena, FakeSourceLoc(1), contents);
EXPECT_EQ(expression->source_loc(), FakeSourceLoc(1));
ASSERT_EQ(expression->kind(), Expression::Kind::TupleLiteral);
ASSERT_EQ(expression->kind(), ExpressionKind::TupleLiteral);
EXPECT_THAT(cast<TupleLiteral>(*expression).fields(),
ElementsAre(IntField()));
}
@@ -102,7 +102,7 @@ TEST_F(ExpressionTest, UnaryWithCommaAsTuple) {
Nonnull<const Expression*> tuple =
TupleExpressionFromParenContents(&arena, FakeSourceLoc(1), contents);
EXPECT_EQ(tuple->source_loc(), FakeSourceLoc(1));
ASSERT_EQ(tuple->kind(), Expression::Kind::TupleLiteral);
ASSERT_EQ(tuple->kind(), ExpressionKind::TupleLiteral);
EXPECT_THAT(cast<TupleLiteral>(*tuple).fields(), ElementsAre(IntField()));
}
@@ -115,7 +115,7 @@ TEST_F(ExpressionTest, BinaryAsExpression) {
Nonnull<const Expression*> expression =
ExpressionFromParenContents(&arena, FakeSourceLoc(1), contents);
EXPECT_EQ(expression->source_loc(), FakeSourceLoc(1));
ASSERT_EQ(expression->kind(), Expression::Kind::TupleLiteral);
ASSERT_EQ(expression->kind(), ExpressionKind::TupleLiteral);
EXPECT_THAT(cast<TupleLiteral>(*expression).fields(),
ElementsAre(IntField(), IntField()));
}
@@ -129,7 +129,7 @@ TEST_F(ExpressionTest, BinaryAsTuple) {
Nonnull<const Expression*> tuple =
TupleExpressionFromParenContents(&arena, FakeSourceLoc(1), contents);
EXPECT_EQ(tuple->source_loc(), FakeSourceLoc(1));
ASSERT_EQ(tuple->kind(), Expression::Kind::TupleLiteral);
ASSERT_EQ(tuple->kind(), ExpressionKind::TupleLiteral);
EXPECT_THAT(cast<TupleLiteral>(*tuple).fields(),
ElementsAre(IntField(), IntField()));
}