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Finish Parser2 support and switch. (#2381)

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Adds remaining expression support, and switches the default to Parser2.

Note, this doesn't delete the current Parser yet. I'll just do that in its own PR.
This commit is contained in:
Jon Ross-Perkins
2022-11-11 08:36:17 -08:00
committed by GitHub
parent d3be5c2827
commit cd93ae6618
5 changed files with 1307 additions and 259 deletions
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toolchain/parser/parse_tree_test.cpp
+2 -25
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@@ -209,7 +209,7 @@ TEST_F(ParseTreeTest, PrintPreorderAsYAML) {
EXPECT_THAT(Yaml::Value::FromText(print_output), ElementsAre(file));
}
TEST_F(ParseTreeTest, RecursionLimit) {
TEST_F(ParseTreeTest, HighRecursion) {
std::string code = "fn Foo() { return ";
code.append(10000, '(');
code.append(10000, ')');
@@ -217,31 +217,8 @@ TEST_F(ParseTreeTest, RecursionLimit) {
TokenizedBuffer tokens = GetTokenizedBuffer(code);
ASSERT_FALSE(tokens.has_errors());
Testing::MockDiagnosticConsumer consumer;
// Recursion might be exceeded multiple times due to quirks in parse tree
// handling; we only need to be sure it's hit at least once for test
// correctness.
EXPECT_CALL(consumer, HandleDiagnostic(IsDiagnosticMessage(
llvm::formatv("Exceeded recursion limit ({0})",
ParseTree::StackDepthLimit)
.str())))
.Times(AtLeast(1));
ParseTree tree = ParseTree::Parse(tokens, consumer);
EXPECT_TRUE(tree.has_errors());
}
TEST_F(ParseTreeTest, ParsePostfixExpressionRegression) {
// Stack depth errors could cause ParsePostfixExpression to infinitely loop
// when calling children and those children error. Because of the fragility of
// stack depth, this tries a few different values.
for (int n = 0; n <= 10; ++n) {
std::string code = "var x: auto = ";
code.append(ParseTree::StackDepthLimit - n, '*');
code += "(z);";
TokenizedBuffer tokens = GetTokenizedBuffer(code);
ASSERT_FALSE(tokens.has_errors());
ParseTree tree = ParseTree::Parse(tokens, consumer);
EXPECT_TRUE(tree.has_errors());
}
EXPECT_FALSE(tree.has_errors());
}
TEST_F(ParseTreeTest, PackageErrors) {