diff options
Diffstat (limited to 'src/label.rs')
| -rw-r--r-- | src/label.rs | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/label.rs b/src/label.rs index b1f1133..a0bd864 100644 --- a/src/label.rs +++ b/src/label.rs @@ -1,3 +1,6 @@ +//! Definition of the lable type which can be used as jump target and can be bound to a location in +//! the emitted code. + use std::collections::HashSet; /// A label which is used as target for jump instructions. @@ -35,7 +38,11 @@ impl Label { } } - /// Bind the label to the `location`. + /// Bind the label to the `location`, can only be bound once. + /// + /// # Panics + /// + /// Panics if the lable is already bound. pub(crate) fn bind(&mut self, loc: usize) { // A label can only be bound once! assert!(!self.is_bound()); @@ -48,10 +55,13 @@ impl Label { self.offsets.insert(off); } + /// Get the location of the lable if already bound, `None` else. pub(crate) fn location(&self) -> Option<usize> { self.location } + /// Get the offsets which refer to the label. These are used to patch the jump instructions to + /// the label location. pub(crate) fn offsets_mut(&mut self) -> &mut HashSet<usize> { &mut self.offsets } |