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-rw-r--r--mingling_picker/src/parselib/pos_matcher.rs71
1 files changed, 71 insertions, 0 deletions
diff --git a/mingling_picker/src/parselib/pos_matcher.rs b/mingling_picker/src/parselib/pos_matcher.rs
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+++ b/mingling_picker/src/parselib/pos_matcher.rs
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+use crate::{matcher_needed::*, parselib::seek_end_of_options};
+
+/// `PositionalMatcher` matches positional arguments — values not associated
+/// with any named flag.
+///
+/// # Rules
+///
+/// * Before `--`: skips any argument that starts with the style's long or short
+/// prefix (those belong to named matchers).
+/// * After `--`: takes **everything** — the `--` marker signals that all
+/// remaining values are positional, even if they look like flags.
+/// * Runs at the lowest priority (see [`PickerArgAttr::Positional`](crate::PickerArgAttr::Positional)).
+pub struct PositionalMatcher;
+
+impl PositionalMatcher {
+ /// Check whether `raw` looks like a named flag (starts with a prefix).
+ #[inline(always)]
+ fn is_flag_like(raw: &str, style: &ParserStyle) -> bool {
+ raw.starts_with(style.long_prefix) || raw.starts_with(style.short_prefix)
+ }
+}
+
+impl Matcher for PositionalMatcher {
+ fn on_match_one(
+ args: &[MaskedArg],
+ style: &ParserStyle,
+ _arg_info: &PickerArgInfo,
+ ) -> Option<usize> {
+ let end = seek_end_of_options(args, style);
+
+ for arg in args {
+ if end.is_some_and(|e| arg.raw_idx == e) {
+ // Hit `--`: everything from here on is positional,
+ // including the first arg after `--`.
+ continue;
+ }
+ if end.is_some_and(|e| arg.raw_idx > e) {
+ // After `--`: accept everything.
+ return Some(arg.raw_idx);
+ }
+ // Before `--`: skip flag-like args.
+ if !Self::is_flag_like(arg.raw, style) {
+ return Some(arg.raw_idx);
+ }
+ }
+
+ None
+ }
+
+ fn on_match_all(
+ args: &[MaskedArg],
+ style: &ParserStyle,
+ _arg_info: &PickerArgInfo,
+ ) -> Vec<usize> {
+ let end = seek_end_of_options(args, style);
+ let mut after_end = false;
+ let mut result = Vec::new();
+
+ for arg in args {
+ if end.is_some_and(|e| arg.raw_idx == e) {
+ after_end = true;
+ continue;
+ }
+ if after_end || !Self::is_flag_like(arg.raw, style) {
+ result.push(arg.raw_idx);
+ }
+ }
+
+ result
+ }
+}