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Fix other error

This commit is contained in:
Greg Shuflin 2021-11-19 20:43:37 -08:00
parent ec5bf12a65
commit eeec85c2b1
2 changed files with 22 additions and 10 deletions
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28
schala-lang/src/parsing/combinator.rs
View File

@ -501,7 +501,15 @@ fn extended_expr_part(input: Span) -> ParseResult<ExtendedPart> {
}
fn call_part(input: Span) -> ParseResult<Vec<InvocationArgument>> {
delimited(tok(char('(')), separated_list0(tok(char(',')), invocation_argument), tok(char(')')))(input)
context(
"call-part",
//TODO generalize this `not`
delimited(
tok(char('(')),
separated_list0(tok(char(',')), preceded(not(tok(char(')'))), invocation_argument)),
tok(char(')')),
),
)(input)
}
fn access_part(input: Span) -> ParseResult<&str> {
@ -517,14 +525,16 @@ fn extended_expr_part(input: Span) -> ParseResult<ExtendedPart> {
//TODO this shouldn't be an expression b/c type annotations disallowed here
fn invocation_argument(input: Span) -> ParseResult<InvocationArgument> {
alt((
map(tok(char('_')), |_| InvocationArgument::Ignored),
map(tuple((identifier, tok(char('=')), expression)), |(name, _, expr)| InvocationArgument::Keyword {
name: rc_string(name.fragment()),
expr,
}),
map(expression, InvocationArgument::Positional),
))(input)
context(
"invocation-argument",
cut(alt((
map(tok(char('_')), |_| InvocationArgument::Ignored),
map(tuple((identifier, tok(char('=')), expression)), |(name, _, expr)| {
InvocationArgument::Keyword { name: rc_string(name.fragment()), expr }
}),
map(expression, InvocationArgument::Positional),
))),
)(input)
}
fn primary_expr(allow_struct: bool) -> impl FnMut(Span) -> ParseResult<ExpressionKind> {

4
schala-lang/src/parsing/test.rs
View File

@ -125,6 +125,7 @@ macro_rules! assert_fail_comb {
($input:expr, $failure:expr) => {
let mut parser = Parser::new();
let err = parser.parse_comb($input).unwrap_err();
println!("assert_fail: {}", err.msg);
assert_eq!(err.msg, $failure);
};
}
@ -822,7 +823,8 @@ fn functions() {
]
})
);
assert_fail!("a(b,,c)","error at 1:5: expected one of \"(\", \".\", \"0b\", \"0x\", \"[\", \"\\\"\", \"_\", \"false\", \"for\", \"if\", \"true\", \"while\", ['+' | '-' | '!'], ['0' ..= '9'], ['a' ..= 'z' | 'A' ..= 'Z' | '_'], r#\"\\\"#");
let err_msg = "0: at line 1, in Alpha:\na(b,,c)\n ^\n\n1: at line 1, in Alt:\na(b,,c)\n ^\n\n2: at line 1, in tok:\na(b,,c)\n ^\n\n3: at line 1, in identifier-expr:\na(b,,c)\n ^\n\n4: at line 1, in Alt:\na(b,,c)\n ^\n\n5: at line 1, in primary-expr:\na(b,,c)\n ^\n\n6: at line 1, in extended-expr:\na(b,,c)\n ^\n\n7: at line 1, in prefix-expr:\na(b,,c)\n ^\n\n8: at line 1, in expression-kind:\na(b,,c)\n ^\n\n9: at line 1, in Alt:\na(b,,c)\n ^\n\n10: at line 1, in invocation-argument:\na(b,,c)\n ^\n\n11: at line 1, in call-part:\na(b,,c)\n ^\n\n12: at line 1, in extended-expr:\na(b,,c)\n^\n\n13: at line 1, in prefix-expr:\na(b,,c)\n^\n\n14: at line 1, in expression-kind:\na(b,,c)\n^\n\n15: at line 1, in Parsing-statement:\na(b,,c)\n^\n\n16: at line 1, in AST:\na(b,,c)\n^\n\n";
assert_fail_comb!("a(b,,c)", err_msg);
assert_ast!(
"fn a(b, c: Int): Int",