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