mirror of
https://codeberg.org/ziglang/zig.git
synced 2025-12-06 13:54:21 +00:00
refactored gen_h_file to improve maintainability and output
- extracted functions - factorised extern "C" into a block containing all function prototypes instead of writing macros all over the place - using intermediate buffers instead of writing directly to the output file
This commit is contained in:
Sahnvour
parent
874b34a30f
commit
104b6f1629
2 changed files with 158 additions and 139 deletions
267
src/codegen.cpp
267
src/codegen.cpp
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@ -9732,113 +9732,7 @@ static Buf *preprocessor_mangle(Buf *src) {
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return result;
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return result;
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}
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}
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static void gen_h_file(CodeGen *g) {
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static void gen_h_file_types(CodeGen* g, GenH* gen_h, Buf* out_buf) {
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GenH gen_h_data = {0};
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GenH *gen_h = &gen_h_data;
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assert(!g->is_test_build);
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assert(!g->disable_gen_h);
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Buf *out_h_path = buf_sprintf("%s" OS_SEP "%s.h", buf_ptr(g->output_dir), buf_ptr(g->root_out_name));
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FILE *out_h = fopen(buf_ptr(out_h_path), "wb");
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if (!out_h)
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zig_panic("unable to open %s: %s\n", buf_ptr(out_h_path), strerror(errno));
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Buf *export_macro = nullptr;
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if (g->is_dynamic) {
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export_macro = preprocessor_mangle(buf_sprintf("%s_EXPORT", buf_ptr(g->root_out_name)));
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buf_upcase(export_macro);
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}
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Buf *extern_c_macro = preprocessor_mangle(buf_sprintf("%s_EXTERN_C", buf_ptr(g->root_out_name)));
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buf_upcase(extern_c_macro);
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Buf h_buf = BUF_INIT;
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buf_resize(&h_buf, 0);
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for (size_t fn_def_i = 0; fn_def_i < g->fn_defs.length; fn_def_i += 1) {
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ZigFn *fn_table_entry = g->fn_defs.at(fn_def_i);
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if (fn_table_entry->export_list.length == 0)
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continue;
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FnTypeId *fn_type_id = &fn_table_entry->type_entry->data.fn.fn_type_id;
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Buf return_type_c = BUF_INIT;
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get_c_type(g, gen_h, fn_type_id->return_type, &return_type_c);
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Buf *symbol_name;
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if (fn_table_entry->export_list.length == 0) {
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symbol_name = &fn_table_entry->symbol_name;
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} else {
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GlobalExport *fn_export = &fn_table_entry->export_list.items[0];
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symbol_name = &fn_export->name;
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}
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buf_appendf(&h_buf, "%s %s %s(",
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buf_ptr(g->is_dynamic ? export_macro : extern_c_macro),
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buf_ptr(&return_type_c),
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buf_ptr(symbol_name));
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Buf param_type_c = BUF_INIT;
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if (fn_type_id->param_count > 0) {
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for (size_t param_i = 0; param_i < fn_type_id->param_count; param_i += 1) {
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FnTypeParamInfo *param_info = &fn_type_id->param_info[param_i];
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AstNode *param_decl_node = get_param_decl_node(fn_table_entry, param_i);
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Buf *param_name = param_decl_node->data.param_decl.name;
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const char *comma_str = (param_i == 0) ? "" : ", ";
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const char *restrict_str = param_info->is_noalias ? "restrict" : "";
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get_c_type(g, gen_h, param_info->type, ¶m_type_c);
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if (param_info->type->id == ZigTypeIdArray) {
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// Arrays decay to pointers
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buf_appendf(&h_buf, "%s%s%s %s[]", comma_str, buf_ptr(¶m_type_c),
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restrict_str, buf_ptr(param_name));
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} else {
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buf_appendf(&h_buf, "%s%s%s %s", comma_str, buf_ptr(¶m_type_c),
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restrict_str, buf_ptr(param_name));
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}
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}
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buf_appendf(&h_buf, ")");
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} else {
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buf_appendf(&h_buf, "void)");
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}
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buf_appendf(&h_buf, ";\n");
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}
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Buf *ifdef_dance_name = preprocessor_mangle(buf_sprintf("%s_H", buf_ptr(g->root_out_name)));
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buf_upcase(ifdef_dance_name);
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fprintf(out_h, "#ifndef %s\n", buf_ptr(ifdef_dance_name));
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fprintf(out_h, "#define %s\n\n", buf_ptr(ifdef_dance_name));
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if (g->c_want_stdbool)
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fprintf(out_h, "#include <stdbool.h>\n");
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if (g->c_want_stdint)
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fprintf(out_h, "#include <stdint.h>\n");
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fprintf(out_h, "\n");
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fprintf(out_h, "#ifdef __cplusplus\n");
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fprintf(out_h, "#define %s extern \"C\"\n", buf_ptr(extern_c_macro));
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fprintf(out_h, "#else\n");
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fprintf(out_h, "#define %s\n", buf_ptr(extern_c_macro));
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fprintf(out_h, "#endif\n");
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fprintf(out_h, "\n");
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if (g->is_dynamic) {
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fprintf(out_h, "#if defined(_WIN32)\n");
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fprintf(out_h, "#define %s %s __declspec(dllimport)\n", buf_ptr(export_macro), buf_ptr(extern_c_macro));
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fprintf(out_h, "#else\n");
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fprintf(out_h, "#define %s %s __attribute__((visibility (\"default\")))\n",
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buf_ptr(export_macro), buf_ptr(extern_c_macro));
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fprintf(out_h, "#endif\n");
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fprintf(out_h, "\n");
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}
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for (size_t type_i = 0; type_i < gen_h->types_to_declare.length; type_i += 1) {
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for (size_t type_i = 0; type_i < gen_h->types_to_declare.length; type_i += 1) {
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ZigType *type_entry = gen_h->types_to_declare.at(type_i);
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ZigType *type_entry = gen_h->types_to_declare.at(type_i);
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switch (type_entry->id) {
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switch (type_entry->id) {
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@ -9869,25 +9763,25 @@ static void gen_h_file(CodeGen *g) {
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case ZigTypeIdEnum:
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case ZigTypeIdEnum:
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if (type_entry->data.enumeration.layout == ContainerLayoutExtern) {
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if (type_entry->data.enumeration.layout == ContainerLayoutExtern) {
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fprintf(out_h, "enum %s {\n", buf_ptr(type_h_name(type_entry)));
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buf_appendf(out_buf, "enum %s {\n", buf_ptr(type_h_name(type_entry)));
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for (uint32_t field_i = 0; field_i < type_entry->data.enumeration.src_field_count; field_i += 1) {
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for (uint32_t field_i = 0; field_i < type_entry->data.enumeration.src_field_count; field_i += 1) {
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TypeEnumField *enum_field = &type_entry->data.enumeration.fields[field_i];
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TypeEnumField *enum_field = &type_entry->data.enumeration.fields[field_i];
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Buf *value_buf = buf_alloc();
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Buf *value_buf = buf_alloc();
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bigint_append_buf(value_buf, &enum_field->value, 10);
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bigint_append_buf(value_buf, &enum_field->value, 10);
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fprintf(out_h, " %s = %s", buf_ptr(enum_field->name), buf_ptr(value_buf));
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buf_appendf(out_buf, " %s = %s", buf_ptr(enum_field->name), buf_ptr(value_buf));
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if (field_i != type_entry->data.enumeration.src_field_count - 1) {
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if (field_i != type_entry->data.enumeration.src_field_count - 1) {
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fprintf(out_h, ",");
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buf_appendf(out_buf, ",");
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}
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}
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fprintf(out_h, "\n");
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buf_appendf(out_buf, "\n");
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}
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}
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fprintf(out_h, "};\n\n");
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buf_appendf(out_buf, "};\n\n");
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} else {
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} else {
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fprintf(out_h, "enum %s;\n", buf_ptr(type_h_name(type_entry)));
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buf_appendf(out_buf, "enum %s;\n\n", buf_ptr(type_h_name(type_entry)));
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}
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}
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break;
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break;
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case ZigTypeIdStruct:
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case ZigTypeIdStruct:
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if (type_entry->data.structure.layout == ContainerLayoutExtern) {
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if (type_entry->data.structure.layout == ContainerLayoutExtern) {
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fprintf(out_h, "struct %s {\n", buf_ptr(type_h_name(type_entry)));
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buf_appendf(out_buf, "struct %s {\n", buf_ptr(type_h_name(type_entry)));
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for (uint32_t field_i = 0; field_i < type_entry->data.structure.src_field_count; field_i += 1) {
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for (uint32_t field_i = 0; field_i < type_entry->data.structure.src_field_count; field_i += 1) {
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TypeStructField *struct_field = type_entry->data.structure.fields[field_i];
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TypeStructField *struct_field = type_entry->data.structure.fields[field_i];
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@ -9895,43 +9789,166 @@ static void gen_h_file(CodeGen *g) {
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get_c_type(g, gen_h, struct_field->type_entry, type_name_buf);
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get_c_type(g, gen_h, struct_field->type_entry, type_name_buf);
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if (struct_field->type_entry->id == ZigTypeIdArray) {
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if (struct_field->type_entry->id == ZigTypeIdArray) {
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fprintf(out_h, " %s %s[%" ZIG_PRI_u64 "];\n", buf_ptr(type_name_buf),
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buf_appendf(out_buf, " %s %s[%" ZIG_PRI_u64 "];\n", buf_ptr(type_name_buf),
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buf_ptr(struct_field->name),
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buf_ptr(struct_field->name),
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struct_field->type_entry->data.array.len);
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struct_field->type_entry->data.array.len);
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} else {
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} else {
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fprintf(out_h, " %s %s;\n", buf_ptr(type_name_buf), buf_ptr(struct_field->name));
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buf_appendf(out_buf, " %s %s;\n", buf_ptr(type_name_buf), buf_ptr(struct_field->name));
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}
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}
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}
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}
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fprintf(out_h, "};\n\n");
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buf_appendf(out_buf, "};\n\n");
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} else {
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} else {
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fprintf(out_h, "struct %s;\n", buf_ptr(type_h_name(type_entry)));
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buf_appendf(out_buf, "struct %s;\n\n", buf_ptr(type_h_name(type_entry)));
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}
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}
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break;
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break;
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case ZigTypeIdUnion:
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case ZigTypeIdUnion:
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if (type_entry->data.unionation.layout == ContainerLayoutExtern) {
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if (type_entry->data.unionation.layout == ContainerLayoutExtern) {
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fprintf(out_h, "union %s {\n", buf_ptr(type_h_name(type_entry)));
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buf_appendf(out_buf, "union %s {\n", buf_ptr(type_h_name(type_entry)));
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for (uint32_t field_i = 0; field_i < type_entry->data.unionation.src_field_count; field_i += 1) {
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for (uint32_t field_i = 0; field_i < type_entry->data.unionation.src_field_count; field_i += 1) {
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TypeUnionField *union_field = &type_entry->data.unionation.fields[field_i];
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TypeUnionField *union_field = &type_entry->data.unionation.fields[field_i];
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Buf *type_name_buf = buf_alloc();
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Buf *type_name_buf = buf_alloc();
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get_c_type(g, gen_h, union_field->type_entry, type_name_buf);
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get_c_type(g, gen_h, union_field->type_entry, type_name_buf);
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fprintf(out_h, " %s %s;\n", buf_ptr(type_name_buf), buf_ptr(union_field->name));
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buf_appendf(out_buf, " %s %s;\n", buf_ptr(type_name_buf), buf_ptr(union_field->name));
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}
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}
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fprintf(out_h, "};\n\n");
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buf_appendf(out_buf, "};\n\n");
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} else {
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} else {
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fprintf(out_h, "union %s;\n", buf_ptr(type_h_name(type_entry)));
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buf_appendf(out_buf, "union %s;\n\n", buf_ptr(type_h_name(type_entry)));
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}
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}
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break;
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break;
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case ZigTypeIdOpaque:
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case ZigTypeIdOpaque:
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fprintf(out_h, "struct %s;\n\n", buf_ptr(type_h_name(type_entry)));
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buf_appendf(out_buf, "struct %s;\n\n", buf_ptr(type_h_name(type_entry)));
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break;
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break;
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}
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}
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}
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}
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}
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fprintf(out_h, "%s", buf_ptr(&h_buf));
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static void gen_h_file_functions(CodeGen* g, GenH* gen_h, Buf* out_buf, Buf* export_macro) {
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for (size_t fn_def_i = 0; fn_def_i < g->fn_defs.length; fn_def_i += 1) {
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ZigFn *fn_table_entry = g->fn_defs.at(fn_def_i);
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fprintf(out_h, "\n#endif\n");
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if (fn_table_entry->export_list.length == 0)
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continue;
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FnTypeId *fn_type_id = &fn_table_entry->type_entry->data.fn.fn_type_id;
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Buf return_type_c = BUF_INIT;
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get_c_type(g, gen_h, fn_type_id->return_type, &return_type_c);
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Buf *symbol_name;
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if (fn_table_entry->export_list.length == 0) {
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symbol_name = &fn_table_entry->symbol_name;
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} else {
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GlobalExport *fn_export = &fn_table_entry->export_list.items[0];
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symbol_name = &fn_export->name;
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}
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if (export_macro != nullptr) {
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buf_appendf(out_buf, "%s %s %s(",
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buf_ptr(export_macro),
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buf_ptr(&return_type_c),
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buf_ptr(symbol_name));
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} else {
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buf_appendf(out_buf, "%s %s(",
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buf_ptr(&return_type_c),
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buf_ptr(symbol_name));
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}
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Buf param_type_c = BUF_INIT;
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if (fn_type_id->param_count > 0) {
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for (size_t param_i = 0; param_i < fn_type_id->param_count; param_i += 1) {
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FnTypeParamInfo *param_info = &fn_type_id->param_info[param_i];
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AstNode *param_decl_node = get_param_decl_node(fn_table_entry, param_i);
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Buf *param_name = param_decl_node->data.param_decl.name;
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const char *comma_str = (param_i == 0) ? "" : ", ";
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const char *restrict_str = param_info->is_noalias ? "restrict" : "";
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get_c_type(g, gen_h, param_info->type, ¶m_type_c);
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if (param_info->type->id == ZigTypeIdArray) {
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// Arrays decay to pointers
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buf_appendf(out_buf, "%s%s%s %s[]", comma_str, buf_ptr(¶m_type_c),
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restrict_str, buf_ptr(param_name));
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} else {
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buf_appendf(out_buf, "%s%s%s %s", comma_str, buf_ptr(¶m_type_c),
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restrict_str, buf_ptr(param_name));
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}
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}
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buf_appendf(out_buf, ")");
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} else {
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buf_appendf(out_buf, "void)");
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}
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buf_appendf(out_buf, ";\n");
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}
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}
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static void gen_h_file(CodeGen *g) {
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GenH gen_h_data = {0};
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GenH *gen_h = &gen_h_data;
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assert(!g->is_test_build);
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assert(!g->disable_gen_h);
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Buf *out_h_path = buf_sprintf("%s" OS_SEP "%s.h", buf_ptr(g->output_dir), buf_ptr(g->root_out_name));
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FILE *out_h = fopen(buf_ptr(out_h_path), "wb");
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if (!out_h)
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zig_panic("unable to open %s: %s\n", buf_ptr(out_h_path), strerror(errno));
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Buf *export_macro = nullptr;
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if (g->is_dynamic) {
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export_macro = preprocessor_mangle(buf_sprintf("%s_EXPORT", buf_ptr(g->root_out_name)));
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buf_upcase(export_macro);
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}
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Buf fns_buf = BUF_INIT;
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buf_resize(&fns_buf, 0);
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gen_h_file_functions(g, gen_h, &fns_buf, export_macro);
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Buf types_buf = BUF_INIT;
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buf_resize(&types_buf, 0);
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gen_h_file_types(g, gen_h, &types_buf);
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Buf *ifdef_dance_name = preprocessor_mangle(buf_sprintf("%s_H", buf_ptr(g->root_out_name)));
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buf_upcase(ifdef_dance_name);
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fprintf(out_h, "#ifndef %s\n", buf_ptr(ifdef_dance_name));
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||||||
|
fprintf(out_h, "#define %s\n\n", buf_ptr(ifdef_dance_name));
|
||||||
|
|
||||||
|
if (g->c_want_stdbool)
|
||||||
|
fprintf(out_h, "#include <stdbool.h>\n");
|
||||||
|
if (g->c_want_stdint)
|
||||||
|
fprintf(out_h, "#include <stdint.h>\n");
|
||||||
|
|
||||||
|
fprintf(out_h, "\n");
|
||||||
|
|
||||||
|
if (g->is_dynamic) {
|
||||||
|
fprintf(out_h, "#if defined(_WIN32)\n");
|
||||||
|
fprintf(out_h, "#define %s __declspec(dllimport)\n", buf_ptr(export_macro));
|
||||||
|
fprintf(out_h, "#else\n");
|
||||||
|
fprintf(out_h, "#define %s __attribute__((visibility (\"default\")))\n",
|
||||||
|
buf_ptr(export_macro));
|
||||||
|
fprintf(out_h, "#endif\n");
|
||||||
|
fprintf(out_h, "\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
fprintf(out_h, "%s", buf_ptr(&types_buf));
|
||||||
|
|
||||||
|
fprintf(out_h, "#ifdef __cplusplus\n");
|
||||||
|
fprintf(out_h, "extern \"C\" {\n");
|
||||||
|
fprintf(out_h, "#endif\n");
|
||||||
|
fprintf(out_h, "\n");
|
||||||
|
|
||||||
|
fprintf(out_h, "%s\n", buf_ptr(&fns_buf));
|
||||||
|
|
||||||
|
fprintf(out_h, "#ifdef __cplusplus\n");
|
||||||
|
fprintf(out_h, "} // extern \"C\"\n");
|
||||||
|
fprintf(out_h, "#endif\n\n");
|
||||||
|
|
||||||
|
fprintf(out_h, "%s\n", buf_ptr(&vars_buf));
|
||||||
|
|
||||||
|
fprintf(out_h, "#endif // %s\n", buf_ptr(ifdef_dance_name));
|
||||||
|
|
||||||
if (fclose(out_h))
|
if (fclose(out_h))
|
||||||
zig_panic("unable to close h file: %s", strerror(errno));
|
zig_panic("unable to close h file: %s", strerror(errno));
|
||||||
|
|
|
||||||
|
|
@ -10,9 +10,8 @@ pub fn addCases(cases: *tests.GenHContext) void {
|
||||||
\\ B = 1,
|
\\ B = 1,
|
||||||
\\ C = 2
|
\\ C = 2
|
||||||
\\};
|
\\};
|
||||||
\\
|
,
|
||||||
\\TEST_EXTERN_C void entry(enum Foo foo);
|
\\void entry(enum Foo foo);
|
||||||
\\
|
|
||||||
);
|
);
|
||||||
|
|
||||||
cases.add("declare struct",
|
cases.add("declare struct",
|
||||||
|
|
@ -34,8 +33,8 @@ pub fn addCases(cases: *tests.GenHContext) void {
|
||||||
\\ uint64_t E;
|
\\ uint64_t E;
|
||||||
\\ uint64_t F;
|
\\ uint64_t F;
|
||||||
\\};
|
\\};
|
||||||
\\
|
,
|
||||||
\\TEST_EXTERN_C void entry(struct Foo foo);
|
\\void entry(struct Foo foo);
|
||||||
\\
|
\\
|
||||||
);
|
);
|
||||||
|
|
||||||
|
|
@ -69,8 +68,8 @@ pub fn addCases(cases: *tests.GenHContext) void {
|
||||||
\\ bool C;
|
\\ bool C;
|
||||||
\\ struct Big D;
|
\\ struct Big D;
|
||||||
\\};
|
\\};
|
||||||
\\
|
,
|
||||||
\\TEST_EXTERN_C void entry(union Foo foo);
|
\\void entry(union Foo foo);
|
||||||
\\
|
\\
|
||||||
);
|
);
|
||||||
|
|
||||||
|
|
@ -80,8 +79,8 @@ pub fn addCases(cases: *tests.GenHContext) void {
|
||||||
\\export fn entry(foo: ?*Foo) void { }
|
\\export fn entry(foo: ?*Foo) void { }
|
||||||
,
|
,
|
||||||
\\struct Foo;
|
\\struct Foo;
|
||||||
\\
|
,
|
||||||
\\TEST_EXTERN_C void entry(struct Foo * foo);
|
\\void entry(struct Foo * foo);
|
||||||
);
|
);
|
||||||
|
|
||||||
cases.add("array field-type",
|
cases.add("array field-type",
|
||||||
|
|
@ -95,8 +94,8 @@ pub fn addCases(cases: *tests.GenHContext) void {
|
||||||
\\ int32_t A[2];
|
\\ int32_t A[2];
|
||||||
\\ uint32_t * B[4];
|
\\ uint32_t * B[4];
|
||||||
\\};
|
\\};
|
||||||
\\
|
,
|
||||||
\\TEST_EXTERN_C void entry(struct Foo foo, uint8_t bar[]);
|
\\void entry(struct Foo foo, uint8_t bar[]);
|
||||||
\\
|
\\
|
||||||
);
|
);
|
||||||
|
|
||||||
|
|
@ -110,7 +109,8 @@ pub fn addCases(cases: *tests.GenHContext) void {
|
||||||
\\}
|
\\}
|
||||||
,
|
,
|
||||||
\\struct S;
|
\\struct S;
|
||||||
\\TEST_EXTERN_C uint8_t a(struct S * s);
|
,
|
||||||
|
\\uint8_t a(struct S * s);
|
||||||
\\
|
\\
|
||||||
);
|
);
|
||||||
|
|
||||||
|
|
@ -125,7 +125,8 @@ pub fn addCases(cases: *tests.GenHContext) void {
|
||||||
\\}
|
\\}
|
||||||
,
|
,
|
||||||
\\union U;
|
\\union U;
|
||||||
\\TEST_EXTERN_C uint8_t a(union U * s);
|
,
|
||||||
|
\\uint8_t a(union U * s);
|
||||||
\\
|
\\
|
||||||
);
|
);
|
||||||
|
|
||||||
|
|
@ -140,7 +141,8 @@ pub fn addCases(cases: *tests.GenHContext) void {
|
||||||
\\}
|
\\}
|
||||||
,
|
,
|
||||||
\\enum E;
|
\\enum E;
|
||||||
\\TEST_EXTERN_C uint8_t a(enum E * s);
|
,
|
||||||
|
\\uint8_t a(enum E * s);
|
||||||
\\
|
\\
|
||||||
);
|
);
|
||||||
}
|
}
|
||||||
|
|
|
||||||
Loading…
Add table
Reference in a new issue