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More benchmarks and examples.

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This commit is contained in:
Stephen Chung
2020-05-31 23:44:49 +08:00
parent 331513f5e0
commit c6e5f672c9
5 changed files with 189 additions and 39 deletions
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16
src/optimize.rs
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@@ -385,10 +385,10 @@ fn optimize_expr(expr: Expr, state: &mut State) -> Expr {
// ( stmt )
stmt => Expr::Stmt(Box::new((stmt, x.1))),
},
// id = expr
// id op= expr
Expr::Assignment(x) => match x.2 {
//id = id2 op= expr2
Expr::Assignment(x2) if x.1 == "=" => match (x.0, x2.0) {
//id = id2 op= rhs
Expr::Assignment(x2) if x.1.is_empty() => match (x.0, &x2.0) {
// var = var op= expr2 -> var op= expr2
(Expr::Variable(a), Expr::Variable(b))
if a.1.is_none() && b.1.is_none() && a.0 == b.0 && a.3 == b.3 =>
@@ -397,14 +397,10 @@ fn optimize_expr(expr: Expr, state: &mut State) -> Expr {
state.set_dirty();
Expr::Assignment(Box::new((Expr::Variable(a), x2.1, optimize_expr(x2.2, state), x.3)))
}
// id1 = id2 op= expr2
(id1, id2) => {
Expr::Assignment(Box::new((
id1, x.1, Expr::Assignment(Box::new((id2, x2.1, optimize_expr(x2.2, state), x2.3))), x.3,
)))
}
// expr1 = expr2 op= rhs
(expr1, _) => Expr::Assignment(Box::new((expr1, x.1, optimize_expr(Expr::Assignment(x2), state), x.3))),
},
// id op= expr
// expr = rhs
expr => Expr::Assignment(Box::new((x.0, x.1, optimize_expr(expr, state), x.3))),
},