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Parse parameters in function declarations.

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This commit is contained in:
Richard Smith
2021-04-21 17:53:54 -07:00
parent 928b92a428
commit 2726865940
4 changed files with 155 additions and 51 deletions
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parser/parse_tree_test.cpp
+49 -2
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@@ -150,6 +150,52 @@ TEST_F(ParseTreeTest,
MatchFileEnd()}));
}
TEST_F(ParseTreeTest, FunctionDeclarationWithParameterList) {
TokenizedBuffer tokens = GetTokenizedBuffer("fn foo(Int bar, Int baz);");
ParseTree tree = ParseTree::Parse(tokens, consumer);
EXPECT_FALSE(tree.HasErrors());
EXPECT_THAT(
tree,
MatchParseTreeNodes(
{MatchFunctionDeclaration(
MatchDeclaredName("foo"),
MatchParameterList(
MatchParameterDeclaration(MatchNameReference("Int"), "bar"),
MatchParameterListComma(),
MatchParameterDeclaration(MatchNameReference("Int"), "baz"),
MatchParameterListEnd()),
MatchDeclarationEnd()),
MatchFileEnd()}));
}
TEST_F(ParseTreeTest, FunctionDefinitionWithParameterList) {
TokenizedBuffer tokens = GetTokenizedBuffer(
"fn foo(Int bar, Int baz) {\n"
" foo(baz, bar + baz);\n"
"}");
ParseTree tree = ParseTree::Parse(tokens, consumer);
EXPECT_FALSE(tree.HasErrors());
EXPECT_THAT(
tree,
MatchParseTreeNodes(
{MatchFunctionDeclaration(
MatchDeclaredName("foo"),
MatchParameterList(
MatchParameterDeclaration(MatchNameReference("Int"), "bar"),
MatchParameterListComma(),
MatchParameterDeclaration(MatchNameReference("Int"), "baz"),
MatchParameterListEnd()),
MatchCodeBlock(
MatchExpressionStatement(MatchCallExpression(
MatchNameReference("foo"), MatchNameReference("baz"),
MatchCallExpressionComma(),
MatchInfixOperator(MatchNameReference("bar"), "+",
MatchNameReference("baz")),
MatchCallExpressionEnd())),
MatchCodeBlockEnd())),
MatchFileEnd()}));
}
TEST_F(ParseTreeTest, FunctionDeclarationWithSingleIdentifierParameterList) {
TokenizedBuffer tokens = GetTokenizedBuffer("fn foo(bar);");
ParseTree tree = ParseTree::Parse(tokens, consumer);
@@ -159,8 +205,9 @@ TEST_F(ParseTreeTest, FunctionDeclarationWithSingleIdentifierParameterList) {
EXPECT_THAT(tree,
MatchParseTreeNodes(
{MatchFunctionDeclaration(
HasError, MatchDeclaredName("foo"),
MatchParameterList(HasError, MatchParameterListEnd()),
MatchDeclaredName("foo"),
MatchParameterList(MatchNameReference("bar"), HasError,
MatchParameterListEnd()),
MatchDeclarationEnd()),
MatchFileEnd()}));
}