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80 lines
2.9 KiB
C++
80 lines
2.9 KiB
C++
#include "bif_arg.h"
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#include <cstring>
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static struct {
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const char* type_enum;
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const char* bif_type;
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const char* zeek_type;
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const char* c_type;
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const char* c_type_smart;
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const char* accessor;
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const char* accessor_smart;
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const char* cast_smart;
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const char* constructor;
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const char* ctor_smart;
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} builtin_func_arg_type[] = {
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#define DEFINE_BIF_TYPE(id, bif_type, zeek_type, c_type, c_type_smart, accessor, accessor_smart, cast_smart, \
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constructor, ctor_smart) \
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{#id, bif_type, zeek_type, c_type, c_type_smart, accessor, accessor_smart, cast_smart, constructor, ctor_smart},
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#include "bif_type.def"
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#undef DEFINE_BIF_TYPE
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};
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extern const char* arg_list_name;
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BuiltinFuncArg::BuiltinFuncArg(const char* arg_name, int arg_type) {
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name = arg_name;
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type = arg_type;
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type_str = "";
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attr_str = "";
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}
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BuiltinFuncArg::BuiltinFuncArg(const char* arg_name, const char* arg_type_str, const char* arg_attr_str) {
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name = arg_name;
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type = TYPE_OTHER;
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type_str = arg_type_str;
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attr_str = arg_attr_str;
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for ( int i = 0; builtin_func_arg_type[i].bif_type[0] != '\0'; ++i )
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if ( ! strcmp(builtin_func_arg_type[i].bif_type, arg_type_str) ) {
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type = i;
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type_str = "";
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}
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}
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void BuiltinFuncArg::PrintZeek(FILE* fp) {
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fprintf(fp, "%s: %s%s %s", name, builtin_func_arg_type[type].zeek_type, type_str, attr_str);
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}
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void BuiltinFuncArg::PrintCDef(FILE* fp, int n, bool runtime_type_check) {
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// Generate a runtime type-check pre-amble for types we understand
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if ( runtime_type_check && type != TYPE_OTHER && type != TYPE_ANY ) {
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fprintf(fp, "\t\t{\n");
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fprintf(fp, "\t\t// Runtime type check for %s argument\n", name);
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fprintf(fp, "\t\tzeek::TypeTag __tag = (*%s)[%d]->GetType()->Tag();\n", arg_list_name, n);
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fprintf(fp, "\t\tif ( __tag != %s )\n", builtin_func_arg_type[type].type_enum);
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fprintf(fp, "\t\t\t{\n");
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fprintf(fp,
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"\t\t\tzeek::emit_builtin_error(zeek::util::fmt(\"expected type %s for %s, got "
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"%%s\", zeek::type_name(__tag)));\n",
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builtin_func_arg_type[type].zeek_type, name);
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fprintf(fp, "\t\t\treturn nullptr;\n");
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fprintf(fp, "\t\t\t}\n");
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fprintf(fp, "\t\t}\n");
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}
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fprintf(fp, "\t%s %s = (%s) (", builtin_func_arg_type[type].c_type, name, builtin_func_arg_type[type].c_type);
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char buf[1024];
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snprintf(buf, sizeof(buf), "(*%s)[%d].get()", arg_list_name, n);
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// Print the accessor expression.
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fprintf(fp, builtin_func_arg_type[type].accessor, buf);
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fprintf(fp, ");\n");
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}
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void BuiltinFuncArg::PrintCArg(FILE* fp, int n) {
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fprintf(fp, "%s %s", builtin_func_arg_type[type].c_type_smart, name);
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}
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void BuiltinFuncArg::PrintValConstructor(FILE* fp) { fprintf(fp, builtin_func_arg_type[type].ctor_smart, name); }
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