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Support integer (Num *) patterns in jump tables

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This commit is contained in:
Richard Feldman 2020-03-10 23:08:26 -04:00
parent a0d762d1e5
commit a033f325f4
1 changed files with 14 additions and 8 deletions
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22
compiler/mono/src/expr.rs
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@ -672,14 +672,20 @@ fn from_can_when<'a>(
match &loc_when_pat.value {
NumLiteral(var, num) => {
panic!(
"TODO check if this var is an Int; if so, it's jumpable! var: {:?}, num: {:?}",
var, num
);
// Switch only compares the condition to the
// alternatives based on their bit patterns,
// so casting from i64 to u64 makes no difference here.
// jumpable_branches.push((*int as u64, mono_expr));
// This is jumpable iff it's an int
match to_int_or_float(env.subs, *var) {
IntOrFloat::IntType => {
jumpable_branches.push((*num as u64, mono_expr));
}
IntOrFloat::FloatType => {
// The type checker should have converted these mismatches into RuntimeErrors already!
if cfg!(debug_assertions) {
panic!("A type mismatch in a pattern was not converted to a runtime error: {:?}", loc_when_pat);
} else {
unreachable!();
}
}
};
}
IntLiteral(int) => {
// Switch only compares the condition to the