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Fix rest parsing (#4765)

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* More nuon tests, fix table print

* Fix rest type parsing
This commit is contained in:
JT 2022-03-07 11:44:27 -05:00 committed by GitHub
parent 0b6b321ad6
commit a2723c2ba4
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 42 additions and 27 deletions
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59
crates/nu-parser/src/parser.rs
View File

@ -2749,6 +2749,7 @@ pub fn parse_signature_helper(
enum Arg {
Positional(PositionalArg, bool), // bool - required
RestPositional(PositionalArg),
Flag(Flag),
}
@ -2759,7 +2760,6 @@ pub fn parse_signature_helper(
error = error.or(err);
let mut args: Vec<Arg> = vec![];
let mut rest_arg = None;
let mut parse_mode = ParseMode::ArgMode;
for token in &output {
@ -2930,19 +2930,12 @@ pub fn parse_signature_helper(
let var_id = working_set.add_variable(contents_vec, Type::Unknown);
if rest_arg.is_none() {
rest_arg = Some(Arg::Positional(
PositionalArg {
desc: String::new(),
name,
shape: SyntaxShape::Any,
var_id: Some(var_id),
},
false,
));
} else {
error = error.or(Some(ParseError::MultipleRestParams(span)))
}
args.push(Arg::RestPositional(PositionalArg {
desc: String::new(),
name,
shape: SyntaxShape::Any,
var_id: Some(var_id),
}));
} else {
let name = String::from_utf8_lossy(contents).to_string();
let contents_vec = contents.to_vec();
@ -2972,6 +2965,12 @@ pub fn parse_signature_helper(
working_set.set_variable_type(var_id.expect("internal error: all custom parameters must have var_ids"), syntax_shape.to_type());
*shape = syntax_shape;
}
Arg::RestPositional(PositionalArg {
shape, var_id, ..
}) => {
working_set.set_variable_type(var_id.expect("internal error: all custom parameters must have var_ids"), syntax_shape.to_type());
*shape = syntax_shape;
}
Arg::Flag(Flag { arg, var_id, .. }) => {
// Flags with a boolean type are just present/not-present switches
if syntax_shape != SyntaxShape::Boolean {
@ -3012,6 +3011,12 @@ pub fn parse_signature_helper(
}
positional.desc.push_str(&contents);
}
Arg::RestPositional(positional) => {
if !positional.desc.is_empty() {
positional.desc.push('\n');
}
positional.desc.push_str(&contents);
}
}
}
}
@ -3021,19 +3026,6 @@ pub fn parse_signature_helper(
let mut sig = Signature::new(String::new());
if let Some(Arg::Positional(positional, ..)) = rest_arg {
if positional.name.is_empty() {
error = error.or(Some(ParseError::RestNeedsName(span)))
} else if sig.rest_positional.is_none() {
sig.rest_positional = Some(PositionalArg {
name: positional.name,
..positional
})
} else {
// Too many rest params
error = error.or(Some(ParseError::MultipleRestParams(span)))
}
}
for arg in args {
match arg {
Arg::Positional(positional, required) => {
@ -3044,6 +3036,19 @@ pub fn parse_signature_helper(
}
}
Arg::Flag(flag) => sig.named.push(flag),
Arg::RestPositional(positional) => {
if positional.name.is_empty() {
error = error.or(Some(ParseError::RestNeedsName(span)))
} else if sig.rest_positional.is_none() {
sig.rest_positional = Some(PositionalArg {
name: positional.name,
..positional
})
} else {
// Too many rest params
error = error.or(Some(ParseError::MultipleRestParams(span)))
}
}
}
}

10
src/tests/test_parser.rs
View File

@ -339,3 +339,13 @@ fn string_escape() -> TestResult {
fn string_escape_interpolation() -> TestResult {
run_test(r#"$"\u015B(char hamburger)abc""#, "ś≡abc")
}
#[test]
fn proper_rest_types() -> TestResult {
run_test(
r#"def foo [--verbose(-v): bool, # my test flag
...rest: int # my rest comment
] { if $verbose { print "verbose!" } else { print "not verbose!" } }; foo"#,
"not verbose!",
)
}