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From f45283cb91d07fd280fcf503a486effc1a96fa5e Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Mon, 9 Sep 2013 14:28:15 +0200
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Subject: [PATCH 24/38] qapi: qapi-types.py, native list support
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <1378736903-18489-25-git-send-email-kwolf@redhat.com>
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Patchwork-id: 54211
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O-Subject: [RHEL-7.0 qemu-kvm PATCH 24/32] qapi: qapi-types.py, native list support
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Bugzilla: 1005818
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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From: Michael Roth <mdroth@linux.vnet.ibm.com>
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Bugzilla: 1005818
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Teach type generators about native types so they can generate the
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appropriate linked list types.
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Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
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Reviewed-by: Laszlo Ersek <lersek@redhat.com>
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Reviewed-by: Amos Kong <akong@redhat.com>
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Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
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(cherry picked from commit c0afa9c5f717d0ebf10c70c305974ebbffe4c71f)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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---
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 scripts/qapi-types.py | 45 ++++++++++++++++++++++++++++++++++++++++++---
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 scripts/qapi.py       | 23 +++++++++++++++++++++++
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 2 files changed, 65 insertions(+), 3 deletions(-)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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 scripts/qapi-types.py |   45 ++++++++++++++++++++++++++++++++++++++++++---
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 scripts/qapi.py       |   23 +++++++++++++++++++++++
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 2 files changed, 65 insertions(+), 3 deletions(-)
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diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
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index f139bfe..3d9af3c 100644
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--- a/scripts/qapi-types.py
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+++ b/scripts/qapi-types.py
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@@ -16,8 +16,21 @@ import os
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 import getopt
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 import errno
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-def generate_fwd_struct(name, members):
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+def generate_fwd_struct(name, members, builtin_type=False):
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+    if builtin_type:
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+        return mcgen('''
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+
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+typedef struct %(name)sList
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+{
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+    %(type)s value;
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+    struct %(name)sList *next;
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+} %(name)sList;
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+''',
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+                     type=c_type(name),
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+                     name=name)
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+
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     return mcgen('''
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+
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 typedef struct %(name)s %(name)s;
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 typedef struct %(name)sList
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@@ -183,6 +196,7 @@ void qapi_free_%(type)s(%(c_type)s obj);
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 def generate_type_cleanup(name):
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     ret = mcgen('''
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+
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 void qapi_free_%(type)s(%(c_type)s obj)
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 {
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     QapiDeallocVisitor *md;
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@@ -203,8 +217,9 @@ void qapi_free_%(type)s(%(c_type)s obj)
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 try:
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-    opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:o:",
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-                                   ["source", "header", "prefix=", "output-dir="])
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+    opts, args = getopt.gnu_getopt(sys.argv[1:], "chbp:o:",
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+                                   ["source", "header", "builtins",
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+                                    "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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@@ -216,6 +231,7 @@ h_file = 'qapi-types.h'
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 do_c = False
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 do_h = False
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+do_builtins = False
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 for o, a in opts:
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     if o in ("-p", "--prefix"):
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@@ -226,6 +242,8 @@ for o, a in opts:
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         do_c = True
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     elif o in ("-h", "--header"):
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         do_h = True
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+    elif o in ("-b", "--builtins"):
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+        do_builtins = True
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 if not do_c and not do_h:
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     do_c = True
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@@ -301,6 +319,11 @@ fdecl.write(mcgen('''
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 exprs = parse_schema(sys.stdin)
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 exprs = filter(lambda expr: not expr.has_key('gen'), exprs)
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+fdecl.write(guardstart("QAPI_TYPES_BUILTIN_STRUCT_DECL"))
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+for typename in builtin_types:
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+    fdecl.write(generate_fwd_struct(typename, None, builtin_type=True))
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+fdecl.write(guardend("QAPI_TYPES_BUILTIN_STRUCT_DECL"))
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+
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 for expr in exprs:
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     ret = "\n"
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     if expr.has_key('type'):
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@@ -317,6 +340,22 @@ for expr in exprs:
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         continue
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     fdecl.write(ret)
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+# to avoid header dependency hell, we always generate declarations
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+# for built-in types in our header files and simply guard them
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+fdecl.write(guardstart("QAPI_TYPES_BUILTIN_CLEANUP_DECL"))
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+for typename in builtin_types:
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+    fdecl.write(generate_type_cleanup_decl(typename + "List"))
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+fdecl.write(guardend("QAPI_TYPES_BUILTIN_CLEANUP_DECL"))
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+
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+# ...this doesn't work for cases where we link in multiple objects that
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+# have the functions defined, so we use -b option to provide control
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+# over these cases
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+if do_builtins:
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+    fdef.write(guardstart("QAPI_TYPES_BUILTIN_CLEANUP_DEF"))
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+    for typename in builtin_types:
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+        fdef.write(generate_type_cleanup(typename + "List"))
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+    fdef.write(guardend("QAPI_TYPES_BUILTIN_CLEANUP_DEF"))
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+
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 for expr in exprs:
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     ret = "\n"
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     if expr.has_key('type'):
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diff --git a/scripts/qapi.py b/scripts/qapi.py
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index 03c42a9..3a54c7f 100644
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--- a/scripts/qapi.py
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+++ b/scripts/qapi.py
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@@ -11,6 +11,12 @@
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 from ordereddict import OrderedDict
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+builtin_types = [
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+    'str', 'int', 'number', 'bool',
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+    'int8', 'int16', 'int32', 'int64',
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+    'uint8', 'uint16', 'uint32', 'uint64'
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+]
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+
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 def tokenize(data):
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     while len(data):
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         ch = data[0]
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@@ -274,3 +280,20 @@ def guardname(filename):
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     for substr in [".", " ", "-"]:
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         guard = guard.replace(substr, "_")
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     return guard.upper() + '_H'
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+
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+def guardstart(name):
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+    return mcgen('''
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+
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+#ifndef %(name)s
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+#define %(name)s
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+
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+''',
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+                 name=guardname(name))
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+
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+def guardend(name):
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+    return mcgen('''
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+
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+#endif /* %(name)s */
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+
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+''',
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+                 name=guardname(name))
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-- 
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1.7.1
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