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Fix positions.

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This commit is contained in:
Stephen Chung
2022-02-10 17:55:32 +08:00
parent 3050e38c5e
commit d23d1159ab
10 changed files with 95 additions and 53 deletions
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2
src/optimizer.rs
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@@ -940,7 +940,7 @@ fn optimize_expr(expr: &mut Expr, state: &mut OptimizerState, chaining: bool) {
while n < x.len() - 1 {
match (mem::take(&mut x[n]), mem::take(&mut x[n+1])) {
(Expr::StringConstant(mut s1, pos), Expr::StringConstant(s2, ..)) => { s1 += s2; x[n] = Expr::StringConstant(s1, pos); x.remove(n+1); state.set_dirty(); }
(expr1, Expr::Unit(..)) => { x[n] = expr1; x.remove(n+1); state.set_dirty(); }
(expr1, Expr::Unit(..)) => { x[n] = expr1; x.remove(n+1); state.set_dirty(); }
(Expr::Unit(..), expr2) => { x[n+1] = expr2; x.remove(n); state.set_dirty(); }
(expr1, Expr::StringConstant(s, ..)) if s.is_empty() => { x[n] = expr1; x.remove(n+1); state.set_dirty(); }
(Expr::StringConstant(s, ..), expr2) if s.is_empty()=> { x[n+1] = expr2; x.remove(n); state.set_dirty(); }