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chore(els): impl Display for ASTDiff/HIRDiff

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This commit is contained in:
Shunsuke Shibayama 2023-05-13 19:08:35 +09:00
parent 28a6dd72eb
commit df5b3bb7d0
2 changed files with 25 additions and 2 deletions
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23
crates/els/diff.rs
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@ -1,4 +1,5 @@
use std::cmp::Ordering::*;
use std::fmt;
use erg_common::traits::Stream;
use erg_compiler::erg_parser::ast;
@ -15,6 +16,17 @@ pub enum ASTDiff {
Nop,
}
impl fmt::Display for ASTDiff {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::Deletion(idx) => write!(f, "Deletion({idx})"),
Self::Addition(idx, expr) => write!(f, "Addition({idx}, {expr})"),
Self::Modification(idx, expr) => write!(f, "Modification({idx}, {expr})"),
Self::Nop => write!(f, "Nop"),
}
}
}
/// diff(old: {x, y, z}, new: {x, a, y, z}) => ASTDiff::Addition(1)
/// diff(old: {x, y}, new: {x, y, a}) => ASTDiff::Addition(2)
/// diff(old: {x, y}, new: {x}) => ASTDiff::Deletion(1)
@ -57,6 +69,17 @@ pub enum HIRDiff {
Nop,
}
impl fmt::Display for HIRDiff {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::Deletion(idx) => write!(f, "Deletion({idx})"),
Self::Addition(idx, expr) => write!(f, "Addition({idx}, {expr})"),
Self::Modification(idx, expr) => write!(f, "Modification({idx}, {expr})"),
Self::Nop => write!(f, "Nop"),
}
}
}
impl HIRDiff {
pub fn new(diff: ASTDiff, lowerer: &mut ASTLowerer) -> Option<Self> {
match diff {