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code gen for simple guards

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Guards cannot use variables bound in the pattern yet
This commit is contained in:
Folkert 2020-03-21 22:27:36 +01:00
parent bd7ad318cf
commit a16d48a6a9
4 changed files with 490 additions and 293 deletions
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8
compiler/mono/src/expr.rs
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@ -1031,6 +1031,12 @@ fn from_can_when<'a>(
for when_branch in branches {
let mono_expr = from_can(env, when_branch.value.value, procs, None);
let mono_guard = if let Some(loc_guard) = when_branch.guard {
Some(from_can(env, loc_guard.value, procs, None))
} else {
None
};
for loc_pattern in when_branch.patterns {
let mono_pattern = from_can_pattern(env, &loc_pattern.value);
@ -1051,7 +1057,7 @@ fn from_can_when<'a>(
Err(message) => Expr::RuntimeError(env.arena.alloc(message)),
};
opt_branches.push((mono_pattern, mono_expr));
opt_branches.push((mono_pattern, mono_guard.clone(), mono_expr));
}
}