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Undef value --- (for setting a value to be uninitialized/undefined)

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This commit is contained in:
Ginger Bill
2017-06-26 11:57:26 +01:00
parent 362a118782
commit c642e326ce
8 changed files with 124 additions and 14 deletions
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12
src/types.cpp
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@@ -38,6 +38,7 @@ enum BasicKind {
Basic_UntypedString,
Basic_UntypedRune,
Basic_UntypedNil,
Basic_UntypedUndef,
Basic_COUNT,
@@ -267,6 +268,7 @@ gb_global Type basic_types[] = {
{Type_Basic, {Basic_UntypedString, BasicFlag_String | BasicFlag_Untyped, 0, STR_LIT("untyped string")}},
{Type_Basic, {Basic_UntypedRune, BasicFlag_Integer | BasicFlag_Untyped, 0, STR_LIT("untyped rune")}},
{Type_Basic, {Basic_UntypedNil, BasicFlag_Untyped, 0, STR_LIT("untyped nil")}},
{Type_Basic, {Basic_UntypedUndef, BasicFlag_Untyped, 0, STR_LIT("untyped undefined")}},
};
// gb_global Type basic_type_aliases[] = {
@@ -311,6 +313,7 @@ gb_global Type *t_untyped_complex = &basic_types[Basic_UntypedComplex];
gb_global Type *t_untyped_string = &basic_types[Basic_UntypedString];
gb_global Type *t_untyped_rune = &basic_types[Basic_UntypedRune];
gb_global Type *t_untyped_nil = &basic_types[Basic_UntypedNil];
gb_global Type *t_untyped_undef = &basic_types[Basic_UntypedUndef];
gb_global Type *t_u8_ptr = NULL;
@@ -905,6 +908,10 @@ bool is_type_untyped_nil(Type *t) {
t = base_type(t);
return (t->kind == Type_Basic && t->Basic.kind == Basic_UntypedNil);
}
bool is_type_untyped_undef(Type *t) {
t = base_type(t);
return (t->kind == Type_Basic && t->Basic.kind == Basic_UntypedUndef);
}
@@ -1001,6 +1008,11 @@ bool is_type_generic(Type *t) {
}
bool type_has_undef(Type *t) {
t = base_type(t);
return true;
}
bool type_has_nil(Type *t) {
t = base_type(t);
switch (t->kind) {