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Fix #814

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This commit is contained in:
gingerBill
2021-05-13 00:57:10 +01:00
parent 2e5f57d8a1
commit be12f12c3c
1 changed files with 38 additions and 3 deletions
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src/check_stmt.cpp
+38 -3
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@@ -960,9 +960,44 @@ void check_switch_stmt(CheckerContext *ctx, Ast *node, u32 mod_flags) {
Operand b1 = rhs;
check_comparison(ctx, &a1, &b1, Token_LtEq);
add_constant_switch_case(ctx, &seen, lhs);
if (upper_op == Token_GtEq) {
add_constant_switch_case(ctx, &seen, rhs);
if (is_type_enum(x.type)) {
// TODO(bill): Fix this logic so it's fast!!!
i64 v0 = exact_value_to_i64(lhs.value);
i64 v1 = exact_value_to_i64(rhs.value);
Operand v = {};
v.mode = Addressing_Constant;
v.type = x.type;
v.expr = x.expr;
Type *bt = base_type(x.type);
GB_ASSERT(bt->kind == Type_Enum);
for (i64 vi = v0; vi <= v1; vi++) {
if (upper_op != Token_GtEq && vi == v1) {
break;
}
bool found = false;
for_array(j, bt->Enum.fields) {
Entity *f = bt->Enum.fields[j];
GB_ASSERT(f->kind == Entity_Constant);
i64 fv = exact_value_to_i64(f->Constant.value);
if (fv == vi) {
found = true;
break;
}
}
if (found) {
v.value = exact_value_i64(vi);
add_constant_switch_case(ctx, &seen, v);
}
}
} else {
add_constant_switch_case(ctx, &seen, lhs);
if (upper_op == Token_GtEq) {
add_constant_switch_case(ctx, &seen, rhs);
}
}
if (is_type_string(x.type)) {