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Improve ternary if expression type inference rues

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Allow for expression like this

    `x: union{f32} = f32(123) if cond else nil`
This commit is contained in:
gingerBill
2023-01-30 12:54:11 +00:00
parent 88b578ca11
commit 8e8eb9e5cd
1 changed files with 11 additions and 2 deletions
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13
src/check_expr.cpp
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@@ -7518,16 +7518,25 @@ gb_internal ExprKind check_ternary_if_expr(CheckerContext *c, Operand *o, Ast *n
return kind;
}
convert_to_typed(c, &x, y.type);
convert_to_typed(c, &x, type_hint ? type_hint : y.type);
if (x.mode == Addressing_Invalid) {
return kind;
}
convert_to_typed(c, &y, x.type);
convert_to_typed(c, &y, type_hint ? type_hint : x.type);
if (y.mode == Addressing_Invalid) {
x.mode = Addressing_Invalid;
return kind;
}
// NOTE(bill, 2023-01-30): Allow for expression like this:
// x: union{f32} = f32(123) if cond else nil
if (type_hint && !ternary_compare_types(x.type, y.type)) {
if (check_is_assignable_to(c, &x, type_hint) && check_is_assignable_to(c, &y, type_hint)) {
check_cast(c, &x, type_hint);
check_cast(c, &y, type_hint);
}
}
if (!ternary_compare_types(x.type, y.type)) {
gbString its = type_to_string(x.type);
gbString ets = type_to_string(y.type);