# # QAPI visitor generator # # Copyright IBM, Corp. 2011 # # Authors: # Anthony Liguori <aliguori@us.ibm.com> # Michael Roth <mdroth@linux.vnet.ibm.com> # # This work is licensed under the terms of the GNU GPLv2. # See the COPYING.LIB file in the top-level directory. from ordereddict import OrderedDict from qapi import * import sys import os import getopt import errno def generate_visit_struct_body(field_prefix, members): ret = "" if len(field_prefix): field_prefix = field_prefix + "." for argname, argentry, optional, structured in parse_args(members): if optional: ret += mcgen(''' visit_start_optional(m, (obj && *obj) ? &(*obj)->%(c_prefix)shas_%(c_name)s : NULL, "%(name)s", errp); if ((*obj)->%(prefix)shas_%(c_name)s) { ''', c_prefix=c_var(field_prefix), prefix=field_prefix, c_name=c_var(argname), name=argname) push_indent() if structured: ret += mcgen(''' visit_start_struct(m, NULL, "", "%(name)s", 0, errp); ''', name=argname) ret += generate_visit_struct_body(field_prefix + argname, argentry) ret += mcgen(''' visit_end_struct(m, errp); ''') else: ret += mcgen(''' visit_type_%(type)s(m, (obj && *obj) ? &(*obj)->%(c_prefix)s%(c_name)s : NULL, "%(name)s", errp); ''', c_prefix=c_var(field_prefix), prefix=field_prefix, type=type_name(argentry), c_name=c_var(argname), name=argname) if optional: pop_indent() ret += mcgen(''' } visit_end_optional(m, errp); ''') return ret def generate_visit_struct(name, members): ret = mcgen(''' void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp) { visit_start_struct(m, (void **)obj, "%(name)s", name, sizeof(%(name)s), errp); ''', name=name) push_indent() ret += generate_visit_struct_body("", members) pop_indent() ret += mcgen(''' visit_end_struct(m, errp); } ''') return ret def generate_visit_list(name, members): return mcgen(''' void visit_type_%(name)sList(Visitor *m, %(name)sList ** obj, const char *name, Error **errp) { GenericList *i, **head = (GenericList **)obj; visit_start_list(m, name, errp); for (*head = i = visit_next_list(m, head, errp); i; i = visit_next_list(m, &i, errp)) { %(name)sList *native_i = (%(name)sList *)i; visit_type_%(name)s(m, &native_i->value, NULL, errp); } visit_end_list(m, errp); } ''', name=name) def generate_visit_enum(name, members): return mcgen(''' void visit_type_%(name)s(Visitor *m, %(name)s * obj, const char *name, Error **errp) { visit_type_enum(m, (int *)obj, %(name)s_lookup, "%(name)s", name, errp); } ''', name=name) def generate_visit_union(name, members): ret = generate_visit_enum('%sKind' % name, members.keys()) ret += mcgen(''' void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp) { } ''', name=name) return ret def generate_declaration(name, members, genlist=True): ret = mcgen(''' void visit_type_%(name)s(Visitor *m, %(name)s ** obj, const char *name, Error **errp); ''', name=name) if genlist: ret += mcgen(''' void visit_type_%(name)sList(Visitor *m, %(name)sList ** obj, const char *name, Error **errp); ''', name=name) return ret def generate_decl_enum(name, members, genlist=True): return mcgen(''' void visit_type_%(name)s(Visitor *m, %(name)s * obj, const char *name, Error **errp); ''', name=name) try: opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:o:", ["source", "header", "prefix=", "output-dir="]) except getopt.GetoptError, err: print str(err) sys.exit(1) output_dir = "" prefix = "" c_file = 'qapi-visit.c' h_file = 'qapi-visit.h' do_c = False do_h = False for o, a in opts: if o in ("-p", "--prefix"): prefix = a elif o in ("-o", "--output-dir"): output_dir = a + "/" elif o in ("-c", "--source"): do_c = True elif o in ("-h", "--header"): do_h = True if not do_c and not do_h: do_c = True do_h = True c_file = output_dir + prefix + c_file h_file = output_dir + prefix + h_file try: os.makedirs(output_dir) except os.error, e: if e.errno != errno.EEXIST: raise def maybe_open(really, name, opt): if really: return open(name, opt) else: import StringIO return StringIO.StringIO() fdef = maybe_open(do_c, c_file, 'w') fdecl = maybe_open(do_h, h_file, 'w') fdef.write(mcgen(''' /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */ /* * schema-defined QAPI visitor functions * * Copyright IBM, Corp. 2011 * * Authors: * Anthony Liguori <aliguori@us.ibm.com> * * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. * See the COPYING.LIB file in the top-level directory. * */ #include "%(header)s" ''', header=basename(h_file))) fdecl.write(mcgen(''' /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */ /* * schema-defined QAPI visitor function * * Copyright IBM, Corp. 2011 * * Authors: * Anthony Liguori <aliguori@us.ibm.com> * * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. * See the COPYING.LIB file in the top-level directory. * */ #ifndef %(guard)s #define %(guard)s #include "qapi/qapi-visit-core.h" #include "%(prefix)sqapi-types.h" ''', prefix=prefix, guard=guardname(h_file))) exprs = parse_schema(sys.stdin) for expr in exprs: if expr.has_key('type'): ret = generate_visit_struct(expr['type'], expr['data']) ret += generate_visit_list(expr['type'], expr['data']) fdef.write(ret) ret = generate_declaration(expr['type'], expr['data']) fdecl.write(ret) elif expr.has_key('union'): ret = generate_visit_union(expr['union'], expr['data']) fdef.write(ret) ret = generate_decl_enum('%sKind' % expr['union'], expr['data'].keys()) ret += generate_declaration(expr['union'], expr['data']) fdecl.write(ret) elif expr.has_key('enum'): ret = generate_visit_enum(expr['enum'], expr['data']) fdef.write(ret) ret = generate_decl_enum(expr['enum'], expr['data']) fdecl.write(ret) fdecl.write(''' #endif ''') fdecl.flush() fdecl.close() fdef.flush() fdef.close()