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Optimize data structures.

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This commit is contained in:
Stephen Chung
2020-11-06 16:27:40 +08:00
parent c6ef2d1e95
commit 07a8a43298
8 changed files with 88 additions and 95 deletions
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21
src/optimize.rs
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@@ -387,7 +387,7 @@ fn optimize_stmt(stmt: Stmt, state: &mut State, preserve_result: bool) -> Stmt {
}
}
// try { block } catch ( var ) { block }
Stmt::TryCatch(x) if x.0.is_pure() => {
Stmt::TryCatch(x, _, _) if x.0.is_pure() => {
// If try block is pure, there will never be any exceptions
state.set_dirty();
let pos = x.0.position();
@@ -399,14 +399,17 @@ fn optimize_stmt(stmt: Stmt, state: &mut State, preserve_result: bool) -> Stmt {
Stmt::Block(statements, pos)
}
// try { block } catch ( var ) { block }
Stmt::TryCatch(x) => {
let (try_block, var_name, catch_block, pos) = *x;
Stmt::TryCatch(Box::new((
optimize_stmt(try_block, state, false),
var_name,
optimize_stmt(catch_block, state, false),
pos,
)))
Stmt::TryCatch(x, try_pos, catch_pos) => {
let (try_block, var_name, catch_block) = *x;
Stmt::TryCatch(
Box::new((
optimize_stmt(try_block, state, false),
var_name,
optimize_stmt(catch_block, state, false),
)),
try_pos,
catch_pos,
)
}
// {}
Stmt::Expr(Expr::Stmt(x, pos)) if x.is_empty() => {