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Eliminate repetitive code and fix Unix failure

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This commit is contained in:
Yehuda Katz 2019-11-25 11:03:01 -08:00
parent 5fbea31d15
commit 3008434c0f
5 changed files with 47 additions and 56 deletions
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3
.cargo/config
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@ -0,0 +1,3 @@
[build]
#rustflags = ["--cfg", "coloring_in_tokens"]

2
TODO.md
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@ -33,8 +33,6 @@ This pattern is extremely repetitive and can be abstracted:
```
Do we need Display impls?
Mandatory and Optional in parse_command
trace_remaining?

2
src/data/files.rs
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@ -38,7 +38,7 @@ pub(crate) fn dir_entry_dict(
{
use std::os::unix::fs::PermissionsExt;
let mode = metadata.permissions().mode();
dict.insert(
dict.insert_untagged(
"mode",
UntaggedValue::string(umask::Mode::from(mode).to_string()),
);

4
src/parser/hir/syntax_shape/expression/number.rs
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@ -26,7 +26,9 @@ impl ExpandExpression for NumberShape {
) -> Result<hir::Expression, ParseError> {
parse_single_node(token_nodes, "Number", |token, token_span, err| {
Ok(match token {
UnspannedToken::GlobPattern | UnspannedToken::Operator(..) => return Err(err.error()),
UnspannedToken::GlobPattern | UnspannedToken::Operator(..) => {
return Err(err.error())
}
UnspannedToken::Variable(tag) if tag.slice(context.source) == "it" => {
hir::Expression::it_variable(tag, token_span)
}

92
src/parser/parse_command.rs
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@ -389,9 +389,47 @@ impl ColorSyntax for CommandTailShape {
token_nodes: &'b mut TokensIterator<'a>,
context: &ExpandContext,
) -> Self::Info {
use crate::parser::hir::syntax_shape::SyntaxShape;
let mut args = ColoringArgs::new(token_nodes.len());
trace_remaining("nodes", &token_nodes, context.source());
fn insert_flag(
token_nodes: &mut TokensIterator,
syntax_type: &SyntaxShape,
args: &mut ColoringArgs,
flag: Flag,
pos: usize,
context: &ExpandContext,
) {
let (_, shapes) = token_nodes.atomic_returning_shapes(|token_nodes| {
token_nodes.color_shape(flag.color());
token_nodes.move_to(pos);
if token_nodes.at_end() {
return Ok(());
}
// We still want to color the flag even if the following tokens don't match, so don't
// propagate the error to the parent atomic block if it fails
let _ = token_nodes.atomic(|token_nodes| {
// We can live with unmatched syntax after a mandatory flag
color_syntax(&MaybeSpaceShape, token_nodes, context);
// If the part after a mandatory flag isn't present, that's ok, but we
// should roll back any whitespace we chomped
color_fallible_syntax(syntax_type, token_nodes, context)?;
Ok(())
});
Ok(())
});
args.insert(pos, shapes);
token_nodes.restart();
}
for (name, kind) in &signature.named {
trace!(target: "nu::color_syntax", "looking for {} : {:?}", name, kind);
@ -414,32 +452,7 @@ impl ColorSyntax for CommandTailShape {
// The mandatory flag didn't exist at all, so there's nothing to color
}
Ok((pos, flag)) => {
let (_, shapes) = token_nodes.atomic_returning_shapes(|token_nodes| {
token_nodes.color_shape(flag.color());
token_nodes.move_to(pos);
if token_nodes.at_end() {
return Ok(());
}
// We still want to color the flag even if the following tokens don't match, so don't
// propagate the error to the parent atomic block if it fails
let _ = token_nodes.atomic(|token_nodes| {
// We can live with unmatched syntax after a mandatory flag
color_syntax(&MaybeSpaceShape, token_nodes, context);
// If the part after a mandatory flag isn't present, that's ok, but we
// should roll back any whitespace we chomped
color_fallible_syntax(syntax_type, token_nodes, context)?;
Ok(())
});
Ok(())
});
args.insert(pos, shapes);
token_nodes.restart();
insert_flag(token_nodes, syntax_type, &mut args, flag, pos, context)
}
}
}
@ -449,32 +462,7 @@ impl ColorSyntax for CommandTailShape {
// The optional flag didn't exist at all, so there's nothing to color
}
Ok(Some((pos, flag))) => {
let (_, shapes) = token_nodes.atomic_returning_shapes(|token_nodes| {
token_nodes.color_shape(flag.color());
token_nodes.move_to(pos);
if token_nodes.at_end() {
return Ok(());
}
// We still want to color the flag even if the following tokens don't match, so don't
// propagate the error to the parent atomic block if it fails
let _ = token_nodes.atomic(|token_nodes| {
// We can live with unmatched syntax after a mandatory flag
color_syntax(&MaybeSpaceShape, token_nodes, context);
// If the part after a mandatory flag isn't present, that's ok, but we
// should roll back any whitespace we chomped
color_fallible_syntax(syntax_type, token_nodes, context)?;
Ok(())
});
Ok(())
});
args.insert(pos, shapes);
token_nodes.restart();
insert_flag(token_nodes, syntax_type, &mut args, flag, pos, context)
}
Ok(None) => {