motiejus/zig
1
Fork 0
Code Releases Activity

support unknown size arrays

Browse Source
This commit is contained in:
Andrew Kelley
2016-01-06 01:28:58 -07:00
parent 4ef062b9c8
commit 3c43bc9208
8 changed files with 137 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
src/codegen.cpp
View File

@@ -462,14 +462,17 @@ static LLVMValueRef gen_bare_cast(CodeGen *g, AstNode *node, LLVMValueRef expr_v
add_debug_source_node(g, node);
return LLVMBuildTrunc(g->builder, expr_val, wanted_type->type_ref, "");
}
case CastOpArrayToString:
case CastOpToUnknownSizeArray:
{
assert(cast_node->ptr);
TypeTableEntry *pointer_type = wanted_type->data.structure.fields[0].type_entry;
add_debug_source_node(g, node);
LLVMValueRef ptr_ptr = LLVMBuildStructGEP(g->builder, cast_node->ptr, 0, "");
LLVMBuildStore(g->builder, expr_val, ptr_ptr);
LLVMValueRef expr_bitcast = LLVMBuildBitCast(g->builder, expr_val, pointer_type->type_ref, "");
LLVMBuildStore(g->builder, expr_bitcast, ptr_ptr);
LLVMValueRef len_ptr = LLVMBuildStructGEP(g->builder, cast_node->ptr, 1, "");
LLVMValueRef len_val = LLVMConstInt(g->builtin_types.entry_usize->type_ref,
@@ -1925,41 +1928,6 @@ static void define_builtin_types(CodeGen *g) {
entry->di_type = g->builtin_types.entry_void->di_type;
g->builtin_types.entry_unreachable = entry;
}
{
TypeTableEntry *entry = new_type_table_entry(TypeTableEntryIdStruct);
TypeTableEntry *const_pointer_to_u8 = get_pointer_to_type(g, g->builtin_types.entry_u8, true);
unsigned element_count = 2;
LLVMTypeRef element_types[] = {
const_pointer_to_u8->type_ref,
g->builtin_types.entry_usize->type_ref
};
entry->type_ref = LLVMStructCreateNamed(LLVMGetGlobalContext(), "string");
LLVMStructSetBody(entry->type_ref, element_types, element_count, false);
buf_init_from_str(&entry->name, "string");
entry->size_in_bits = g->pointer_size_bytes * 2 * 8;
entry->align_in_bits = g->pointer_size_bytes;
entry->data.structure.is_packed = false;
entry->data.structure.field_count = element_count;
entry->data.structure.fields = allocate<TypeStructField>(element_count);
entry->data.structure.fields[0].name = buf_create_from_str("ptr");
entry->data.structure.fields[0].type_entry = const_pointer_to_u8;
entry->data.structure.fields[1].name = buf_create_from_str("len");
entry->data.structure.fields[1].type_entry = g->builtin_types.entry_usize;
LLVMZigDIType *di_element_types[] = {
const_pointer_to_u8->di_type,
g->builtin_types.entry_usize->di_type
};
LLVMZigDIScope *compile_unit_scope = LLVMZigCompileUnitToScope(g->compile_unit);
entry->di_type = LLVMZigCreateDebugStructType(g->dbuilder, compile_unit_scope,
"string", g->dummy_di_file, 0, entry->size_in_bits, entry->align_in_bits, 0,
nullptr, di_element_types, element_count, 0, nullptr, "");
g->builtin_types.entry_string = entry;
}
}
@@ -2103,7 +2071,6 @@ static ImportTableEntry *codegen_add_code(CodeGen *g, Buf *abs_full_path,
import_entry->type_table.put(&g->builtin_types.entry_f64->name, g->builtin_types.entry_f64);
import_entry->type_table.put(&g->builtin_types.entry_void->name, g->builtin_types.entry_void);
import_entry->type_table.put(&g->builtin_types.entry_unreachable->name, g->builtin_types.entry_unreachable);
import_entry->type_table.put(&g->builtin_types.entry_string->name, g->builtin_types.entry_string);
import_entry->root = ast_parse(source_code, tokenization.tokens, import_entry, g->err_color);
assert(import_entry->root);