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Add optional params

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This commit is contained in:
JT 2021-07-17 10:53:45 +12:00
parent aa7f23e1e1
commit d08f2e73d0
1 changed files with 42 additions and 16 deletions
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58
src/parser.rs
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@ -927,7 +927,7 @@ impl ParserWorkingSet {
}
enum Arg {
Positional(PositionalArg),
Positional(PositionalArg, bool), // bool - required
Flag(Flag),
}
@ -958,7 +958,7 @@ impl ParserWorkingSet {
let span = Span { start, end };
let source = &self.file_contents[..span.end];
let (output, err) = lex(&source, span.start, &[b'\n', b','], &[b':', b'?']);
let (output, err) = lex(&source, span.start, &[b'\n', b','], &[b':']);
error = error.or(err);
let mut args: Vec<Arg> = vec![];
@ -1017,11 +1017,14 @@ impl ParserWorkingSet {
}));
} else if chars.is_empty() {
// Positional arg
args.push(Arg::Positional(PositionalArg {
desc: String::new(),
name: String::from_utf8_lossy(contents).to_string(),
shape: SyntaxShape::Any,
}))
args.push(Arg::Positional(
PositionalArg {
desc: String::new(),
name: String::from_utf8_lossy(contents).to_string(),
shape: SyntaxShape::Any,
},
true,
))
} else {
args.push(Arg::Flag(Flag {
arg: None,
@ -1032,12 +1035,29 @@ impl ParserWorkingSet {
}));
}
} else {
// Positional arg
args.push(Arg::Positional(PositionalArg {
desc: String::new(),
name: String::from_utf8_lossy(contents).to_string(),
shape: SyntaxShape::Any,
}))
if contents.ends_with(b"?") {
let contents = &contents[..(contents.len() - 1)];
// Positional arg, optional
args.push(Arg::Positional(
PositionalArg {
desc: String::new(),
name: String::from_utf8_lossy(contents).to_string(),
shape: SyntaxShape::Any,
},
false,
))
} else {
// Positional arg, required
args.push(Arg::Positional(
PositionalArg {
desc: String::new(),
name: String::from_utf8_lossy(contents).to_string(),
shape: SyntaxShape::Any,
},
true,
))
}
}
}
ParseMode::TypeMode => {
@ -1045,7 +1065,7 @@ impl ParserWorkingSet {
let syntax_shape = self.parse_shape_name(contents);
//TODO check if we're replacing one already
match last {
Arg::Positional(PositionalArg { shape, .. }) => {
Arg::Positional(PositionalArg { shape, .. }, ..) => {
*shape = syntax_shape;
}
Arg::Flag(Flag { arg, .. }) => *arg = Some(syntax_shape),
@ -1073,7 +1093,7 @@ impl ParserWorkingSet {
}
flag.desc.push_str(&contents);
}
Arg::Positional(positional) => {
Arg::Positional(positional, ..) => {
if !positional.desc.is_empty() {
positional.desc.push_str("\n");
}
@ -1090,7 +1110,13 @@ impl ParserWorkingSet {
for arg in args {
match arg {
Arg::Positional(positional) => sig.required_positional.push(positional),
Arg::Positional(positional, required) => {
if required {
sig.required_positional.push(positional)
} else {
sig.optional_positional.push(positional)
}
}
Arg::Flag(flag) => sig.named.push(flag),
}
}