motiejus/zig
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implement null as a literal type

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This commit is contained in:
Andrew Kelley
2016-08-25 17:25:18 -07:00
parent 1f7ec741fa
commit 651dc31247
8 changed files with 76 additions and 35 deletions
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10
src/codegen.cpp
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@@ -875,6 +875,9 @@ static LLVMValueRef gen_cast_expr(CodeGen *g, AstNode *node) {
return cast_expr->tmp_ptr;
}
case CastOpNullToMaybe:
// handled by constant expression evaluator
zig_unreachable();
case CastOpErrorWrap:
{
assert(wanted_type->id == TypeTableEntryIdErrorUnion);
@@ -3806,6 +3809,7 @@ static LLVMValueRef gen_const_val(CodeGen *g, TypeTableEntry *type_entry, ConstE
case TypeTableEntryIdNumLitFloat:
case TypeTableEntryIdNumLitInt:
case TypeTableEntryIdUndefLit:
case TypeTableEntryIdNullLit:
case TypeTableEntryIdVoid:
case TypeTableEntryIdNamespace:
case TypeTableEntryIdGenericFn:
@@ -4311,6 +4315,12 @@ static void define_builtin_types(CodeGen *g) {
entry->deep_const = true;
g->builtin_types.entry_undef = entry;
}
{
TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdNullLit);
buf_init_from_str(&entry->name, "(null)");
entry->deep_const = true;
g->builtin_types.entry_null = entry;
}
for (int int_size_i = 0; int_size_i < array_length(int_sizes_in_bits); int_size_i += 1) {
int size_in_bits = int_sizes_in_bits[int_size_i];