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Fix compile time issue regarding switch ranges

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This commit is contained in:
gingerBill
2018-02-17 19:05:14 +00:00
parent 21432ba96e
commit d560f6c920
2 changed files with 27 additions and 36 deletions
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src/check_stmt.cpp
+15 -14
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@@ -744,7 +744,8 @@ void check_switch_stmt(Checker *c, AstNode *node, u32 mod_flags) {
}
}
if (a1.mode != Addressing_Invalid && b1.mode != Addressing_Invalid &&
if (complete &&
a1.mode != Addressing_Invalid && b1.mode != Addressing_Invalid &&
lhs.mode == Addressing_Constant && rhs.mode == Addressing_Constant &&
is_type_number(lhs.type) && is_type_number(rhs.type)) {
ExactValue start = lhs.value;
@@ -852,21 +853,21 @@ void check_switch_stmt(Checker *c, AstNode *node, u32 mod_flags) {
}
enum SwitchKind {
Switch_Invalid,
Switch_Union,
Switch_Any,
enum TypeSwitchKind {
TypeSwitch_Invalid,
TypeSwitch_Union,
TypeSwitch_Any,
};
SwitchKind check_valid_type_switch_type(Type *type) {
TypeSwitchKind check_valid_type_switch_type(Type *type) {
type = type_deref(type);
if (is_type_union(type)) {
return Switch_Union;
return TypeSwitch_Union;
}
if (is_type_any(type)) {
return Switch_Any;
return TypeSwitch_Any;
}
return Switch_Invalid;
return TypeSwitch_Invalid;
}
void check_type_switch_stmt(Checker *c, AstNode *node, u32 mod_flags) {
@@ -879,7 +880,7 @@ void check_type_switch_stmt(Checker *c, AstNode *node, u32 mod_flags) {
check_label(c, ss->label); // TODO(bill): What should the label's "scope" be?
SwitchKind switch_kind = Switch_Invalid;
TypeSwitchKind switch_kind = TypeSwitch_Invalid;
if (ss->tag->kind != AstNode_AssignStmt) {
error(ss->tag, "Expected an 'in' assignment for this type switch statement");
@@ -902,7 +903,7 @@ void check_type_switch_stmt(Checker *c, AstNode *node, u32 mod_flags) {
check_expr(c, &x, rhs);
check_assignment(c, &x, nullptr, str_lit("type switch expression"));
switch_kind = check_valid_type_switch_type(x.type);
if (switch_kind == Switch_Invalid) {
if (switch_kind == TypeSwitch_Invalid) {
gbString str = type_to_string(x.type);
error(x.expr, "Invalid type for this type switch expression, got '%s'", str);
gb_string_free(str);
@@ -911,7 +912,7 @@ void check_type_switch_stmt(Checker *c, AstNode *node, u32 mod_flags) {
bool complete = ss->complete;
if (complete) {
if (switch_kind != Switch_Union) {
if (switch_kind != TypeSwitch_Union) {
error(node, "#complete switch statement may only be used with a union");
complete = false;
}
@@ -973,7 +974,7 @@ void check_type_switch_stmt(Checker *c, AstNode *node, u32 mod_flags) {
Operand y = {};
check_expr_or_type(c, &y, type_expr);
if (switch_kind == Switch_Union) {
if (switch_kind == TypeSwitch_Union) {
GB_ASSERT(is_type_union(bt));
bool tag_type_found = false;
for_array(i, bt->Union.variants) {
@@ -990,7 +991,7 @@ void check_type_switch_stmt(Checker *c, AstNode *node, u32 mod_flags) {
continue;
}
case_type = y.type;
} else if (switch_kind == Switch_Any) {
} else if (switch_kind == TypeSwitch_Any) {
case_type = y.type;
} else {
GB_PANIC("Unknown type to type switch statement");