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cap(Enum) (equivalent to max(Enum)-min(Enum)+1)

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This commit is contained in:
gingerBill
2022-09-22 01:09:18 +01:00
parent 532133d648
commit b426e8577b
1 changed files with 15 additions and 10 deletions
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25
src/check_builtin.cpp
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@@ -1614,6 +1614,7 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
case BuiltinProc_type_info_of:
case BuiltinProc_typeid_of:
case BuiltinProc_len:
case BuiltinProc_cap:
case BuiltinProc_min:
case BuiltinProc_max:
case BuiltinProc_type_is_subtype_of:
@@ -1696,16 +1697,14 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
return check_builtin_procedure_directive(c, operand, call, type_hint);
case BuiltinProc_len:
check_expr_or_type(c, operand, ce->args[0]);
if (operand->mode == Addressing_Invalid) {
return false;
}
/* fallthrough */
case BuiltinProc_cap:
{
// len :: proc(Type) -> int
// cap :: proc(Type) -> int
check_expr_or_type(c, operand, ce->args[0]);
if (operand->mode == Addressing_Invalid) {
return false;
}
Type *op_type = type_deref(operand->type);
Type *type = t_int;
@@ -1749,11 +1748,17 @@ bool check_builtin_procedure(CheckerContext *c, Operand *operand, Ast *call, i32
mode = Addressing_Value;
} else if (is_type_map(op_type)) {
mode = Addressing_Value;
} else if (operand->mode == Addressing_Type && is_type_enum(op_type) && id == BuiltinProc_len) {
} else if (operand->mode == Addressing_Type && is_type_enum(op_type)) {
Type *bt = base_type(op_type);
mode = Addressing_Constant;
value = exact_value_i64(bt->Enum.fields.count);
type = t_untyped_integer;
mode = Addressing_Constant;
type = t_untyped_integer;
if (id == BuiltinProc_len) {
value = exact_value_i64(bt->Enum.fields.count);
} else {
GB_ASSERT(id == BuiltinProc_cap);
value = exact_value_sub(*bt->Enum.max_value, *bt->Enum.min_value);
value = exact_value_increment_one(value);
}
} else if (is_type_struct(op_type)) {
Type *bt = base_type(op_type);
if (bt->Struct.soa_kind == StructSoa_Fixed) {