87 lines · plain
1/*2 * Copyright 2018 Sven Verdoolaege3 *4 * Use of this software is governed by the MIT license5 *6 * Written by Sven Verdoolaege.7 */8 9#include <stdio.h>10#include <map>11#include <string>12 13#include "cpp.h"14#include "cpp_conversion.h"15 16/* If "clazz" describes a subclass of a C type, then print code17 * for converting an object of the class derived from the C type18 * to the subclass. Do this by first converting this class19 * to the immediate superclass of the subclass and then converting20 * from this superclass to the subclass.21 */22void cpp_conversion_generator::cast(const isl_class &clazz, const char *to)23{24 string name = cpp_generator::type2cpp(clazz);25 26 if (!clazz.is_type_subclass())27 return;28 29 cast(classes[clazz.superclass_name], to);30 printf(".as<%s%s>()", to, name.c_str());31}32 33/* Print a function called "function" for converting objects of34 * "clazz" from the "from" bindings to the "to" bindings.35 * If "clazz" describes a subclass of a C type, then the result36 * of the conversion between bindings is derived from the C type and37 * needs to be converted back to the subclass.38 */39void cpp_conversion_generator::convert(const isl_class &clazz,40 const char *from, const char *to, const char *function)41{42 string name = cpp_generator::type2cpp(clazz);43 44 printf("%s%s %s(%s%s obj) {\n",45 to, name.c_str(), function, from, name.c_str());46 printf("\t""return %s""manage(obj.copy())", to);47 cast(clazz, to);48 printf(";\n");49 printf("}\n");50 printf("\n");51}52 53/* Print functions for converting objects of "clazz"54 * between the default and the checked C++ bindings.55 *56 * The conversion from default to checked is called "check".57 * The inverse conversion is called "uncheck".58 * For example, to "set", the following two functions are generated:59 *60 * checked::set check(set obj) {61 * return checked::manage(obj.copy());62 * }63 *64 * set uncheck(checked::set obj) {65 * return manage(obj.copy());66 * }67 */68void cpp_conversion_generator::print(const isl_class &clazz)69{70 convert(clazz, "", "checked::", "check");71 convert(clazz, "checked::", "", "uncheck");72}73 74/* Generate conversion functions for converting objects between75 * the default and the checked C++ bindings.76 * Do this for each exported class.77 */78void cpp_conversion_generator::generate()79{80 map<string, isl_class>::iterator ci;81 82 printf("namespace isl {\n\n");83 for (ci = classes.begin(); ci != classes.end(); ++ci)84 print(ci->second);85 printf("} // namespace isl\n");86}87