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| author | Andrew Kelley <andrew@ziglang.org> | 2019-02-21 08:46:43 -0500 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2019-02-21 08:46:43 -0500 |
| commit | db31c2524df4352593128aaceaa0b085ef8bb674 (patch) | |
| tree | e748e614ff6c1718bf4580616d1f9c032926a621 /src/ir.cpp | |
| parent | 3ee9d06cbdb6bcaf561e7215c4c103c7ad65a72d (diff) | |
| download | zig-db31c2524df4352593128aaceaa0b085ef8bb674.tar.gz zig-db31c2524df4352593128aaceaa0b085ef8bb674.zip | |
extern structs support comptime bitcasting
Diffstat (limited to 'src/ir.cpp')
| -rw-r--r-- | src/ir.cpp | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/ir.cpp b/src/ir.cpp index 177133788f..03555c78f4 100644 --- a/src/ir.cpp +++ b/src/ir.cpp @@ -20923,8 +20923,19 @@ static void buf_write_value_bytes(CodeGen *codegen, uint8_t *buf, ConstExprValue switch (val->type->data.structure.layout) { case ContainerLayoutAuto: zig_unreachable(); - case ContainerLayoutExtern: - zig_panic("TODO buf_write_value_bytes extern struct"); + case ContainerLayoutExtern: { + size_t src_field_count = val->type->data.structure.src_field_count; + for (size_t field_i = 0; field_i < src_field_count; field_i += 1) { + TypeStructField *type_field = &val->type->data.structure.fields[field_i]; + if (type_field->gen_index == SIZE_MAX) + continue; + ConstExprValue *field_val = &val->data.x_struct.fields[field_i]; + size_t offset = LLVMOffsetOfElement(codegen->target_data_ref, val->type->type_ref, + type_field->gen_index); + buf_write_value_bytes(codegen, buf + offset, field_val); + } + return; + } case ContainerLayoutPacked: { size_t src_field_count = val->type->data.structure.src_field_count; size_t gen_field_count = val->type->data.structure.gen_field_count; @@ -20979,9 +20990,9 @@ static void buf_write_value_bytes(CodeGen *codegen, uint8_t *buf, ConstExprValue offset += big_int_byte_count; gen_i += 1; } + return; } } - return; case ZigTypeIdOptional: zig_panic("TODO buf_write_value_bytes maybe type"); case ZigTypeIdErrorUnion: |