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[Qemu-devel] [PATCH v6 13/18] qapi: add qapi-visit.py code generator
From: |
Michael Roth |
Subject: |
[Qemu-devel] [PATCH v6 13/18] qapi: add qapi-visit.py code generator |
Date: |
Tue, 12 Jul 2011 18:39:39 -0500 |
This is the code generator for qapi visiter functions used to
marshal/unmarshal/dealloc qapi types. It generates the following 2
files:
$(prefix)qapi-visit.c: visiter function for a particular c type, used
to automagically convert qobjects into the
corresponding C type and vice-versa, and well
as for deallocation memory for an existing C
type
$(prefix)qapi-visit.h: declarations for previously mentioned visiter
functions
$(prefix) is used as decribed for qapi-types.py
Signed-off-by: Michael Roth <address@hidden>
---
scripts/qapi-visit.py | 243 +++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 243 insertions(+), 0 deletions(-)
create mode 100644 scripts/qapi-visit.py
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
new file mode 100644
index 0000000..0ef6602
--- /dev/null
+++ b/scripts/qapi-visit.py
@@ -0,0 +1,243 @@
+#
+# QAPI visitor generator
+#
+# Copyright IBM, Corp. 2011
+#
+# Authors:
+# Anthony Liguori <address@hidden>
+# Michael Roth <address@hidden>
+#
+# 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
+
+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;
+
+ visit_start_list(m, name, errp);
+
+ for (i = visit_next_list(m, (GenericList **)obj, 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:], "p:o:", ["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'
+
+for o, a in opts:
+ if o in ("-p", "--prefix"):
+ prefix = a
+ elif o in ("-o", "--output-dir"):
+ output_dir = a + "/"
+
+c_file = output_dir + prefix + c_file
+h_file = output_dir + prefix + h_file
+
+if os.path.isdir(output_dir) == False:
+ os.makedirs(output_dir)
+
+fdef = open(c_file, 'w')
+fdecl = open(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 <address@hidden>
+ *
+ * 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 <address@hidden>
+ *
+ * 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()
+
--
1.7.0.4
- [Qemu-devel] [PATCH v6 03/18] qapi: add module init types for qapi, (continued)
- [Qemu-devel] [PATCH v6 03/18] qapi: add module init types for qapi, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 04/18] qapi: add QAPI visitor core, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 05/18] qapi: add QMP input visitor, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 06/18] qapi: add QMP output visitor, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 07/18] qapi: add QAPI dealloc visitor, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 08/18] qapi: add QMP command registration/lookup functions, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 09/18] qapi: add QMP dispatch functions, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 10/18] qapi: add ordereddict.py helper library, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 12/18] qapi: add qapi-types.py code generator, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 11/18] qapi: add qapi.py helper libraries, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 13/18] qapi: add qapi-visit.py code generator,
Michael Roth <=
- [Qemu-devel] [PATCH v6 15/18] qapi: test schema used for unit tests, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 14/18] qapi: add qapi-commands.py code generator, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 16/18] qapi: add test-visitor, tests for gen. visitor code, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 17/18] qapi: add test-qmp-commands, tests for gen. marshalling/dispatch code, Michael Roth, 2011/07/12
- [Qemu-devel] [PATCH v6 18/18] qapi: add QAPI code generation documentation, Michael Roth, 2011/07/12
- Re: [Qemu-devel] [QAPI+QGA 2/3] QAPI code generation infrastructure v6, Luiz Capitulino, 2011/07/13