]> Git Repo - qemu.git/blobdiff - scripts/qapi.py
sockets: fix parsing of ipv4/ipv6 opts in parse_socket_addr
[qemu.git] / scripts / qapi.py
index fb10d937aaf05b6fbb317996aa848a3c017275de..43a54bf40fcf0ba5cdf55a5b8ba25f0c9e265740 100644 (file)
 # This work is licensed under the terms of the GNU GPL, version 2.
 # See the COPYING file in the top-level directory.
 
-import re
-from ordereddict import OrderedDict
 import errno
 import getopt
 import os
-import sys
+import re
 import string
+import sys
+from ordereddict import OrderedDict
 
 builtin_types = {
+    'null':     'QTYPE_QNULL',
     'str':      'QTYPE_QSTRING',
-    'int':      'QTYPE_QINT',
-    'number':   'QTYPE_QFLOAT',
+    'int':      'QTYPE_QNUM',
+    'number':   'QTYPE_QNUM',
     'bool':     'QTYPE_QBOOL',
-    'int8':     'QTYPE_QINT',
-    'int16':    'QTYPE_QINT',
-    'int32':    'QTYPE_QINT',
-    'int64':    'QTYPE_QINT',
-    'uint8':    'QTYPE_QINT',
-    'uint16':   'QTYPE_QINT',
-    'uint32':   'QTYPE_QINT',
-    'uint64':   'QTYPE_QINT',
-    'size':     'QTYPE_QINT',
+    'int8':     'QTYPE_QNUM',
+    'int16':    'QTYPE_QNUM',
+    'int32':    'QTYPE_QNUM',
+    'int64':    'QTYPE_QNUM',
+    'uint8':    'QTYPE_QNUM',
+    'uint16':   'QTYPE_QNUM',
+    'uint32':   'QTYPE_QNUM',
+    'uint64':   'QTYPE_QNUM',
+    'size':     'QTYPE_QNUM',
     'any':      None,           # any QType possible, actually
     'QType':    'QTYPE_QSTRING',
 }
@@ -46,10 +47,9 @@ returns_whitelist = []
 # Whitelist of entities allowed to violate case conventions
 name_case_whitelist = []
 
-enum_types = []
-struct_types = []
-union_types = []
-events = []
+enum_types = {}
+struct_types = {}
+union_types = {}
 all_names = {}
 
 #
@@ -58,9 +58,9 @@ all_names = {}
 
 
 def error_path(parent):
-    res = ""
+    res = ''
     while parent:
-        res = ("In file included from %s:%d:\n" % (parent['file'],
+        res = ('In file included from %s:%d:\n' % (parent['file'],
                                                    parent['line'])) + res
         parent = parent['parent']
     return res
@@ -76,10 +76,10 @@ class QAPIError(Exception):
         self.msg = msg
 
     def __str__(self):
-        loc = "%s:%d" % (self.fname, self.line)
+        loc = '%s:%d' % (self.fname, self.line)
         if self.col is not None:
-            loc += ":%s" % self.col
-        return error_path(self.info) + "%s: %s" % (loc, self.msg)
+            loc += ':%s' % self.col
+        return error_path(self.info) + '%s: %s' % (loc, self.msg)
 
 
 class QAPIParseError(QAPIError):
@@ -106,24 +106,25 @@ class QAPIDoc(object):
             # optional section name (argument/member or section name)
             self.name = name
             # the list of lines for this section
-            self.content = []
-            self.optional = False
+            self.text = ''
 
         def append(self, line):
-            self.content.append(line)
-
-        def __repr__(self):
-            return "\n".join(self.content).strip()
+            self.text += line.rstrip() + '\n'
 
     class ArgSection(Section):
-        pass
+        def __init__(self, name):
+            QAPIDoc.Section.__init__(self, name)
+            self.member = None
+
+        def connect(self, member):
+            self.member = member
 
     def __init__(self, parser, info):
-        # self.parser is used to report errors with QAPIParseError.  The
+        # self._parser is used to report errors with QAPIParseError.  The
         # resulting error position depends on the state of the parser.
         # It happens to be the beginning of the comment.  More or less
         # servicable, but action at a distance.
-        self.parser = parser
+        self._parser = parser
         self.info = info
         self.symbol = None
         self.body = QAPIDoc.Section()
@@ -132,9 +133,7 @@ class QAPIDoc(object):
         # a list of Section
         self.sections = []
         # the current section
-        self.section = self.body
-        # associated expression (to be set by expression parser)
-        self.expr = None
+        self._section = self.body
 
     def has_section(self, name):
         """Return True if we have a section with this name."""
@@ -151,34 +150,37 @@ class QAPIDoc(object):
             return
 
         if line[0] != ' ':
-            raise QAPIParseError(self.parser, "Missing space after #")
+            raise QAPIParseError(self._parser, "Missing space after #")
         line = line[1:]
 
         # FIXME not nice: things like '#  @foo:' and '# @foo: ' aren't
         # recognized, and get silently treated as ordinary text
         if self.symbol:
             self._append_symbol_line(line)
-        elif not self.body.content and line.startswith("@"):
-            if not line.endswith(":"):
-                raise QAPIParseError(self.parser, "Line should end with :")
+        elif not self.body.text and line.startswith('@'):
+            if not line.endswith(':'):
+                raise QAPIParseError(self._parser, "Line should end with :")
             self.symbol = line[1:-1]
             # FIXME invalid names other than the empty string aren't flagged
             if not self.symbol:
-                raise QAPIParseError(self.parser, "Invalid name")
+                raise QAPIParseError(self._parser, "Invalid name")
         else:
             self._append_freeform(line)
 
+    def end_comment(self):
+        self._end_section()
+
     def _append_symbol_line(self, line):
         name = line.split(' ', 1)[0]
 
-        if name.startswith("@") and name.endswith(":"):
+        if name.startswith('@') and name.endswith(':'):
             line = line[len(name)+1:]
             self._start_args_section(name[1:-1])
-        elif name in ("Returns:", "Since:",
+        elif name in ('Returns:', 'Since:',
                       # those are often singular or plural
-                      "Note:", "Notes:",
-                      "Example:", "Examples:",
-                      "TODO:"):
+                      'Note:', 'Notes:',
+                      'Example:', 'Examples:',
+                      'TODO:'):
             line = line[len(name)+1:]
             self._start_section(name[:-1])
 
@@ -187,42 +189,75 @@ class QAPIDoc(object):
     def _start_args_section(self, name):
         # FIXME invalid names other than the empty string aren't flagged
         if not name:
-            raise QAPIParseError(self.parser, "Invalid parameter name")
+            raise QAPIParseError(self._parser, "Invalid parameter name")
         if name in self.args:
-            raise QAPIParseError(self.parser,
+            raise QAPIParseError(self._parser,
                                  "'%s' parameter name duplicated" % name)
         if self.sections:
-            raise QAPIParseError(self.parser,
+            raise QAPIParseError(self._parser,
                                  "'@%s:' can't follow '%s' section"
                                  % (name, self.sections[0].name))
-        self.section = QAPIDoc.ArgSection(name)
-        self.args[name] = self.section
+        self._end_section()
+        self._section = QAPIDoc.ArgSection(name)
+        self.args[name] = self._section
 
-    def _start_section(self, name=""):
-        if name in ("Returns", "Since") and self.has_section(name):
-            raise QAPIParseError(self.parser,
+    def _start_section(self, name=None):
+        if name in ('Returns', 'Since') and self.has_section(name):
+            raise QAPIParseError(self._parser,
                                  "Duplicated '%s' section" % name)
-        self.section = QAPIDoc.Section(name)
-        self.sections.append(self.section)
+        self._end_section()
+        self._section = QAPIDoc.Section(name)
+        self.sections.append(self._section)
+
+    def _end_section(self):
+        if self._section:
+            text = self._section.text = self._section.text.strip()
+            if self._section.name and (not text or text.isspace()):
+                raise QAPIParseError(self._parser, "Empty doc section '%s'"
+                                     % self._section.name)
+            self._section = None
 
     def _append_freeform(self, line):
-        in_arg = isinstance(self.section, QAPIDoc.ArgSection)
-        if (in_arg and self.section.content
-                and not self.section.content[-1]
+        in_arg = isinstance(self._section, QAPIDoc.ArgSection)
+        if (in_arg and self._section.text.endswith('\n\n')
                 and line and not line[0].isspace()):
             self._start_section()
-        if (in_arg or not self.section.name
-                or not self.section.name.startswith("Example")):
+        if (in_arg or not self._section.name
+                or not self._section.name.startswith('Example')):
             line = line.strip()
-        self.section.append(line)
+        match = re.match(r'(@\S+:)', line)
+        if match:
+            raise QAPIParseError(self._parser,
+                                 "'%s' not allowed in free-form documentation"
+                                 % match.group(1))
+        self._section.append(line)
+
+    def connect_member(self, member):
+        if member.name not in self.args:
+            # Undocumented TODO outlaw
+            self.args[member.name] = QAPIDoc.ArgSection(member.name)
+        self.args[member.name].connect(member)
+
+    def check_expr(self, expr):
+        if self.has_section('Returns') and 'command' not in expr:
+            raise QAPISemError(self.info,
+                               "'Returns:' is only valid for commands")
+
+    def check(self):
+        bogus = [name for name, section in self.args.iteritems()
+                 if not section.member]
+        if bogus:
+            raise QAPISemError(
+                self.info,
+                "The following documented members are not in "
+                "the declaration: %s" % ", ".join(bogus))
 
 
 class QAPISchemaParser(object):
 
     def __init__(self, fp, previously_included=[], incl_info=None):
         abs_fname = os.path.abspath(fp.name)
-        fname = fp.name
-        self.fname = fname
+        self.fname = fp.name
         previously_included.append(abs_fname)
         self.incl_info = incl_info
         self.src = fp.read()
@@ -234,26 +269,30 @@ class QAPISchemaParser(object):
         self.exprs = []
         self.docs = []
         self.accept()
+        cur_doc = None
 
         while self.tok is not None:
-            info = {'file': fname, 'line': self.line,
+            info = {'file': self.fname, 'line': self.line,
                     'parent': self.incl_info}
             if self.tok == '#':
-                doc = self.get_doc(info)
-                self.docs.append(doc)
+                self.reject_expr_doc(cur_doc)
+                cur_doc = self.get_doc(info)
+                self.docs.append(cur_doc)
                 continue
 
             expr = self.get_expr(False)
             if 'include' in expr:
+                self.reject_expr_doc(cur_doc)
                 if len(expr) != 1:
                     raise QAPISemError(info, "Invalid 'include' directive")
-                include = expr["include"]
+                include = expr['include']
                 if not isinstance(include, str):
                     raise QAPISemError(info,
                                        "Value of 'include' must be a string")
                 self._include(include, info, os.path.dirname(abs_fname),
                               previously_included)
             elif "pragma" in expr:
+                self.reject_expr_doc(cur_doc)
                 if len(expr) != 1:
                     raise QAPISemError(info, "Invalid 'pragma' directive")
                 pragma = expr['pragma']
@@ -265,13 +304,22 @@ class QAPISchemaParser(object):
             else:
                 expr_elem = {'expr': expr,
                              'info': info}
-                if (self.docs
-                        and self.docs[-1].info['file'] == fname
-                        and not self.docs[-1].expr):
-                    self.docs[-1].expr = expr
-                    expr_elem['doc'] = self.docs[-1]
-
+                if cur_doc:
+                    if not cur_doc.symbol:
+                        raise QAPISemError(
+                            cur_doc.info, "Expression documentation required")
+                    expr_elem['doc'] = cur_doc
                 self.exprs.append(expr_elem)
+            cur_doc = None
+        self.reject_expr_doc(cur_doc)
+
+    @staticmethod
+    def reject_expr_doc(doc):
+        if doc and doc.symbol:
+            raise QAPISemError(
+                doc.info,
+                "Documentation for '%s' is not followed by the definition"
+                % doc.symbol)
 
     def _include(self, include, info, base_dir, previously_included):
         incl_abs_fname = os.path.join(base_dir, include)
@@ -332,7 +380,7 @@ class QAPISchemaParser(object):
                 if not skip_comment:
                     self.val = self.src[self.pos:self.cursor]
                     return
-            elif self.tok in "{}:,[]":
+            elif self.tok in '{}:,[]':
                 return
             elif self.tok == "'":
                 string = ''
@@ -358,7 +406,7 @@ class QAPISchemaParser(object):
                             for _ in range(0, 4):
                                 ch = self.src[self.cursor]
                                 self.cursor += 1
-                                if ch not in "0123456789abcdefABCDEF":
+                                if ch not in '0123456789abcdefABCDEF':
                                     raise QAPIParseError(self,
                                                          '\\u escape needs 4 '
                                                          'hex digits')
@@ -373,28 +421,28 @@ class QAPISchemaParser(object):
                                                      'only supports non-zero '
                                                      'values up to \\u007f')
                             string += chr(value)
-                        elif ch in "\\/'\"":
+                        elif ch in '\\/\'"':
                             string += ch
                         else:
                             raise QAPIParseError(self,
                                                  "Unknown escape \\%s" % ch)
                         esc = False
-                    elif ch == "\\":
+                    elif ch == '\\':
                         esc = True
                     elif ch == "'":
                         self.val = string
                         return
                     else:
                         string += ch
-            elif self.src.startswith("true", self.pos):
+            elif self.src.startswith('true', self.pos):
                 self.val = True
                 self.cursor += 3
                 return
-            elif self.src.startswith("false", self.pos):
+            elif self.src.startswith('false', self.pos):
                 self.val = False
                 self.cursor += 4
                 return
-            elif self.src.startswith("null", self.pos):
+            elif self.src.startswith('null', self.pos):
                 self.val = None
                 self.cursor += 3
                 return
@@ -462,7 +510,8 @@ class QAPISchemaParser(object):
             expr = self.val
             self.accept()
         else:
-            raise QAPIParseError(self, 'Expected "{", "[" or string')
+            raise QAPIParseError(self, 'Expected "{", "[", string, '
+                                 'boolean or "null"')
         return expr
 
     def get_doc(self, info):
@@ -478,6 +527,7 @@ class QAPISchemaParser(object):
                 if self.val != '##':
                     raise QAPIParseError(self, "Junk after '##' at end of "
                                          "documentation comment")
+                doc.end_comment()
                 self.accept()
                 return doc
             else:
@@ -497,7 +547,7 @@ class QAPISchemaParser(object):
 def find_base_members(base):
     if isinstance(base, dict):
         return base
-    base_struct_define = find_struct(base)
+    base_struct_define = struct_types.get(base)
     if not base_struct_define:
         return None
     return base_struct_define['data']
@@ -507,12 +557,12 @@ def find_base_members(base):
 def find_alternate_member_qtype(qapi_type):
     if qapi_type in builtin_types:
         return builtin_types[qapi_type]
-    elif find_struct(qapi_type):
-        return "QTYPE_QDICT"
-    elif find_enum(qapi_type):
-        return "QTYPE_QSTRING"
-    elif find_union(qapi_type):
-        return "QTYPE_QDICT"
+    elif qapi_type in struct_types:
+        return 'QTYPE_QDICT'
+    elif qapi_type in enum_types:
+        return 'QTYPE_QSTRING'
+    elif qapi_type in union_types:
+        return 'QTYPE_QDICT'
     return None
 
 
@@ -533,13 +583,13 @@ def discriminator_find_enum_define(expr):
     if not discriminator_type:
         return None
 
-    return find_enum(discriminator_type)
+    return enum_types.get(discriminator_type)
 
 
 # Names must be letters, numbers, -, and _.  They must start with letter,
 # except for downstream extensions which must start with __RFQDN_.
 # Dots are only valid in the downstream extension prefix.
-valid_name = re.compile('^(__[a-zA-Z0-9.-]+_)?'
+valid_name = re.compile(r'^(__[a-zA-Z0-9.-]+_)?'
                         '[a-zA-Z][a-zA-Z0-9_-]*$')
 
 
@@ -580,54 +630,6 @@ def add_name(name, info, meta, implicit=False):
     all_names[name] = meta
 
 
-def add_struct(definition, info):
-    global struct_types
-    name = definition['struct']
-    add_name(name, info, 'struct')
-    struct_types.append(definition)
-
-
-def find_struct(name):
-    global struct_types
-    for struct in struct_types:
-        if struct['struct'] == name:
-            return struct
-    return None
-
-
-def add_union(definition, info):
-    global union_types
-    name = definition['union']
-    add_name(name, info, 'union')
-    union_types.append(definition)
-
-
-def find_union(name):
-    global union_types
-    for union in union_types:
-        if union['union'] == name:
-            return union
-    return None
-
-
-def add_enum(name, info, enum_values=None, implicit=False):
-    global enum_types
-    add_name(name, info, 'enum', implicit)
-    enum_types.append({"enum_name": name, "enum_values": enum_values})
-
-
-def find_enum(name):
-    global enum_types
-    for enum in enum_types:
-        if enum['enum_name'] == name:
-            return enum
-    return None
-
-
-def is_enum(name):
-    return find_enum(name) is not None
-
-
 def check_type(info, source, value, allow_array=False,
                allow_dict=False, allow_optional=False,
                allow_metas=[]):
@@ -697,14 +699,12 @@ def check_command(expr, info):
 
 
 def check_event(expr, info):
-    global events
     name = expr['event']
     boxed = expr.get('boxed', False)
 
     meta = ['struct']
     if boxed:
         meta += ['union', 'alternate']
-    events.append(name)
     check_type(info, "'data' for event '%s'" % name,
                expr.get('data'), allow_dict=not boxed, allow_optional=True,
                allow_metas=meta)
@@ -748,7 +748,7 @@ def check_union(expr, info):
                                "Discriminator '%s' is not a member of base "
                                "struct '%s'"
                                % (discriminator, base))
-        enum_define = find_enum(discriminator_type)
+        enum_define = enum_types.get(discriminator_type)
         allow_metas = ['struct']
         # Do not allow string discriminator
         if not enum_define:
@@ -769,15 +769,15 @@ def check_union(expr, info):
         # If the discriminator names an enum type, then all members
         # of 'data' must also be members of the enum type.
         if enum_define:
-            if key not in enum_define['enum_values']:
+            if key not in enum_define['data']:
                 raise QAPISemError(info,
                                    "Discriminator value '%s' is not found in "
                                    "enum '%s'"
-                                   % (key, enum_define["enum_name"]))
+                                   % (key, enum_define['enum']))
 
     # If discriminator is user-defined, ensure all values are covered
     if enum_define:
-        for value in enum_define['enum_values']:
+        for value in enum_define['data']:
             if value not in members.keys():
                 raise QAPISemError(info, "Union '%s' data missing '%s' branch"
                                    % (name, value))
@@ -804,11 +804,24 @@ def check_alternate(expr, info):
         if not qtype:
             raise QAPISemError(info, "Alternate '%s' member '%s' cannot use "
                                "type '%s'" % (name, key, value))
-        if qtype in types_seen:
-            raise QAPISemError(info, "Alternate '%s' member '%s' can't "
-                               "be distinguished from member '%s'"
-                               % (name, key, types_seen[qtype]))
-        types_seen[qtype] = key
+        conflicting = set([qtype])
+        if qtype == 'QTYPE_QSTRING':
+            enum_expr = enum_types.get(value)
+            if enum_expr:
+                for v in enum_expr['data']:
+                    if v in ['on', 'off']:
+                        conflicting.add('QTYPE_QBOOL')
+                    if re.match(r'[-+0-9.]', v): # lazy, could be tightened
+                        conflicting.add('QTYPE_QNUM')
+            else:
+                conflicting.add('QTYPE_QNUM')
+                conflicting.add('QTYPE_QBOOL')
+        for qt in conflicting:
+            if qt in types_seen:
+                raise QAPISemError(info, "Alternate '%s' member '%s' can't "
+                                   "be distinguished from member '%s'"
+                                   % (name, key, types_seen[qt]))
+            types_seen[qt] = key
 
 
 def check_enum(expr, info):
@@ -865,56 +878,69 @@ def check_keys(expr_elem, meta, required, optional=[]):
 def check_exprs(exprs):
     global all_names
 
-    # Learn the types and check for valid expression keys
+    # Populate name table with names of built-in types
     for builtin in builtin_types.keys():
         all_names[builtin] = 'built-in'
+
+    # Learn the types and check for valid expression keys
     for expr_elem in exprs:
         expr = expr_elem['expr']
         info = expr_elem['info']
+        doc = expr_elem.get('doc')
 
-        if 'doc' not in expr_elem and doc_required:
+        if not doc and doc_required:
             raise QAPISemError(info,
                                "Expression missing documentation comment")
 
         if 'enum' in expr:
+            meta = 'enum'
             check_keys(expr_elem, 'enum', ['data'], ['prefix'])
-            add_enum(expr['enum'], info, expr['data'])
+            enum_types[expr[meta]] = expr
         elif 'union' in expr:
+            meta = 'union'
             check_keys(expr_elem, 'union', ['data'],
                        ['base', 'discriminator'])
-            add_union(expr, info)
+            union_types[expr[meta]] = expr
         elif 'alternate' in expr:
+            meta = 'alternate'
             check_keys(expr_elem, 'alternate', ['data'])
-            add_name(expr['alternate'], info, 'alternate')
         elif 'struct' in expr:
+            meta = 'struct'
             check_keys(expr_elem, 'struct', ['data'], ['base'])
-            add_struct(expr, info)
+            struct_types[expr[meta]] = expr
         elif 'command' in expr:
+            meta = 'command'
             check_keys(expr_elem, 'command', [],
                        ['data', 'returns', 'gen', 'success-response', 'boxed'])
-            add_name(expr['command'], info, 'command')
         elif 'event' in expr:
+            meta = 'event'
             check_keys(expr_elem, 'event', [], ['data', 'boxed'])
-            add_name(expr['event'], info, 'event')
         else:
             raise QAPISemError(expr_elem['info'],
                                "Expression is missing metatype")
+        name = expr[meta]
+        add_name(name, info, meta)
+        if doc and doc.symbol != name:
+            raise QAPISemError(info, "Definition of '%s' follows documentation"
+                               " for '%s'" % (name, doc.symbol))
 
     # Try again for hidden UnionKind enum
     for expr_elem in exprs:
         expr = expr_elem['expr']
-        if 'union' in expr:
-            if not discriminator_find_enum_define(expr):
-                add_enum('%sKind' % expr['union'], expr_elem['info'],
-                         implicit=True)
+        if 'union' in expr and not discriminator_find_enum_define(expr):
+            name = '%sKind' % expr['union']
         elif 'alternate' in expr:
-            add_enum('%sKind' % expr['alternate'], expr_elem['info'],
-                     implicit=True)
+            name = '%sKind' % expr['alternate']
+        else:
+            continue
+        enum_types[name] = {'enum': name}
+        add_name(name, info, 'enum', implicit=True)
 
     # Validate that exprs make sense
     for expr_elem in exprs:
         expr = expr_elem['expr']
         info = expr_elem['info']
+        doc = expr_elem.get('doc')
 
         if 'enum' in expr:
             check_enum(expr, info)
@@ -931,89 +957,10 @@ def check_exprs(exprs):
         else:
             assert False, 'unexpected meta type'
 
-    return exprs
-
-
-def check_freeform_doc(doc):
-    if doc.symbol:
-        raise QAPISemError(doc.info,
-                           "Documention for '%s' is not followed"
-                           " by the definition" % doc.symbol)
-
-    body = str(doc.body)
-    if re.search(r'@\S+:', body, re.MULTILINE):
-        raise QAPISemError(doc.info,
-                           "Free-form documentation block must not contain"
-                           " @NAME: sections")
-
-
-def check_definition_doc(doc, expr, info):
-    for i in ('enum', 'union', 'alternate', 'struct', 'command', 'event'):
-        if i in expr:
-            meta = i
-            break
-
-    name = expr[meta]
-    if doc.symbol != name:
-        raise QAPISemError(info, "Definition of '%s' follows documentation"
-                           " for '%s'" % (name, doc.symbol))
-    if doc.has_section('Returns') and 'command' not in expr:
-        raise QAPISemError(info, "'Returns:' is only valid for commands")
-
-    if meta == 'union':
-        args = expr.get('base', [])
-    else:
-        args = expr.get('data', [])
-    if isinstance(args, str):
-        return
-    if isinstance(args, dict):
-        args = args.keys()
-    assert isinstance(args, list)
-
-    if (meta == 'alternate'
-            or (meta == 'union' and not expr.get('discriminator'))):
-        args.append('type')
-
-    for arg in args:
-        if arg[0] == '*':
-            opt = True
-            desc = doc.args.get(arg[1:])
-        else:
-            opt = False
-            desc = doc.args.get(arg)
-        if not desc:
-            continue
-        desc.optional = opt
-        desc_opt = "#optional" in str(desc)
-        if desc_opt and not opt:
-            raise QAPISemError(info, "Description has #optional, "
-                               "but the declaration doesn't")
-        if not desc_opt and opt:
-            # TODO either fix the schema and make this an error,
-            # or drop #optional entirely
-            pass
-
-    doc_args = set(doc.args.keys())
-    args = set([name.strip('*') for name in args])
-    if not doc_args.issubset(args):
-        raise QAPISemError(info, "The following documented members are not in "
-                           "the declaration: %s" % ", ".join(doc_args - args))
-
-
-def check_docs(docs):
-    for doc in docs:
-        for section in doc.args.values() + doc.sections:
-            content = str(section)
-            if not content or content.isspace():
-                raise QAPISemError(doc.info,
-                                   "Empty doc section '%s'" % section.name)
-
-        if not doc.expr:
-            check_freeform_doc(doc)
-        else:
-            check_definition_doc(doc, doc.expr, doc.info)
+        if doc:
+            doc.check_expr(expr)
 
-    return docs
+    return exprs
 
 
 #
@@ -1021,7 +968,7 @@ def check_docs(docs):
 #
 
 class QAPISchemaEntity(object):
-    def __init__(self, name, info):
+    def __init__(self, name, info, doc):
         assert isinstance(name, str)
         self.name = name
         # For explicitly defined entities, info points to the (explicit)
@@ -1030,6 +977,7 @@ class QAPISchemaEntity(object):
         # triggered the implicit definition (there may be more than one
         # such place).
         self.info = info
+        self.doc = doc
 
     def c_name(self):
         return c_name(self.name)
@@ -1100,18 +1048,24 @@ class QAPISchemaType(QAPISchemaEntity):
 
     def alternate_qtype(self):
         json2qtype = {
+            'null':    'QTYPE_QNULL',
             'string':  'QTYPE_QSTRING',
-            'number':  'QTYPE_QFLOAT',
-            'int':     'QTYPE_QINT',
+            'number':  'QTYPE_QNUM',
+            'int':     'QTYPE_QNUM',
             'boolean': 'QTYPE_QBOOL',
             'object':  'QTYPE_QDICT'
         }
         return json2qtype.get(self.json_type())
 
+    def doc_type(self):
+        if self.is_implicit():
+            return None
+        return self.name
+
 
 class QAPISchemaBuiltinType(QAPISchemaType):
     def __init__(self, name, json_type, c_type):
-        QAPISchemaType.__init__(self, name, None)
+        QAPISchemaType.__init__(self, name, None, None)
         assert not c_type or isinstance(c_type, str)
         assert json_type in ('string', 'number', 'int', 'boolean', 'null',
                              'value')
@@ -1132,13 +1086,16 @@ class QAPISchemaBuiltinType(QAPISchemaType):
     def json_type(self):
         return self._json_type_name
 
+    def doc_type(self):
+        return self.json_type()
+
     def visit(self, visitor):
         visitor.visit_builtin_type(self.name, self.info, self.json_type())
 
 
 class QAPISchemaEnumType(QAPISchemaType):
-    def __init__(self, name, info, values, prefix):
-        QAPISchemaType.__init__(self, name, info)
+    def __init__(self, name, info, doc, values, prefix):
+        QAPISchemaType.__init__(self, name, info, doc)
         for v in values:
             assert isinstance(v, QAPISchemaMember)
             v.set_owner(name)
@@ -1150,10 +1107,12 @@ class QAPISchemaEnumType(QAPISchemaType):
         seen = {}
         for v in self.values:
             v.check_clash(self.info, seen)
+            if self.doc:
+                self.doc.connect_member(v)
 
     def is_implicit(self):
-        # See QAPISchema._make_implicit_enum_type()
-        return self.name.endswith('Kind')
+        # See QAPISchema._make_implicit_enum_type() and ._def_predefineds()
+        return self.name.endswith('Kind') or self.name == 'QType'
 
     def c_type(self):
         return c_name(self.name)
@@ -1171,7 +1130,7 @@ class QAPISchemaEnumType(QAPISchemaType):
 
 class QAPISchemaArrayType(QAPISchemaType):
     def __init__(self, name, info, element_type):
-        QAPISchemaType.__init__(self, name, info)
+        QAPISchemaType.__init__(self, name, info, None)
         assert isinstance(element_type, str)
         self._element_type_name = element_type
         self.element_type = None
@@ -1189,16 +1148,22 @@ class QAPISchemaArrayType(QAPISchemaType):
     def json_type(self):
         return 'array'
 
+    def doc_type(self):
+        elt_doc_type = self.element_type.doc_type()
+        if not elt_doc_type:
+            return None
+        return 'array of ' + elt_doc_type
+
     def visit(self, visitor):
         visitor.visit_array_type(self.name, self.info, self.element_type)
 
 
 class QAPISchemaObjectType(QAPISchemaType):
-    def __init__(self, name, info, base, local_members, variants):
+    def __init__(self, name, info, doc, base, local_members, variants):
         # struct has local_members, optional base, and no variants
         # flat union has base, variants, and no local_members
         # simple union has local_members, variants, and no base
-        QAPISchemaType.__init__(self, name, info)
+        QAPISchemaType.__init__(self, name, info, doc)
         assert base is None or isinstance(base, str)
         for m in local_members:
             assert isinstance(m, QAPISchemaObjectTypeMember)
@@ -1224,20 +1189,24 @@ class QAPISchemaObjectType(QAPISchemaType):
             self.base = schema.lookup_type(self._base_name)
             assert isinstance(self.base, QAPISchemaObjectType)
             self.base.check(schema)
-            self.base.check_clash(schema, self.info, seen)
+            self.base.check_clash(self.info, seen)
         for m in self.local_members:
             m.check(schema)
             m.check_clash(self.info, seen)
+            if self.doc:
+                self.doc.connect_member(m)
         self.members = seen.values()
         if self.variants:
             self.variants.check(schema, seen)
             assert self.variants.tag_member in self.members
-            self.variants.check_clash(schema, self.info, seen)
+            self.variants.check_clash(self.info, seen)
+        if self.doc:
+            self.doc.check()
 
     # Check that the members of this type do not cause duplicate JSON members,
     # and update seen to track the members seen so far. Report any errors
     # on behalf of info, which is not necessarily self.info
-    def check_clash(self, schema, info, seen):
+    def check_clash(self, info, seen):
         assert not self.variants       # not implemented
         for m in self.members:
             m.check_clash(info, seen)
@@ -1366,12 +1335,12 @@ class QAPISchemaObjectTypeVariants(object):
                 assert isinstance(v.type, QAPISchemaObjectType)
                 v.type.check(schema)
 
-    def check_clash(self, schema, info, seen):
+    def check_clash(self, info, seen):
         for v in self.variants:
             # Reset seen map for each variant, since qapi names from one
             # branch do not affect another branch
             assert isinstance(v.type, QAPISchemaObjectType)
-            v.type.check_clash(schema, info, dict(seen))
+            v.type.check_clash(info, dict(seen))
 
 
 class QAPISchemaObjectTypeVariant(QAPISchemaObjectTypeMember):
@@ -1382,8 +1351,8 @@ class QAPISchemaObjectTypeVariant(QAPISchemaObjectTypeMember):
 
 
 class QAPISchemaAlternateType(QAPISchemaType):
-    def __init__(self, name, info, variants):
-        QAPISchemaType.__init__(self, name, info)
+    def __init__(self, name, info, doc, variants):
+        QAPISchemaType.__init__(self, name, info, doc)
         assert isinstance(variants, QAPISchemaObjectTypeVariants)
         assert variants.tag_member
         variants.set_owner(name)
@@ -1400,6 +1369,10 @@ class QAPISchemaAlternateType(QAPISchemaType):
         seen = {}
         for v in self.variants.variants:
             v.check_clash(self.info, seen)
+            if self.doc:
+                self.doc.connect_member(v)
+        if self.doc:
+            self.doc.check()
 
     def c_type(self):
         return c_name(self.name) + pointer_suffix
@@ -1415,9 +1388,9 @@ class QAPISchemaAlternateType(QAPISchemaType):
 
 
 class QAPISchemaCommand(QAPISchemaEntity):
-    def __init__(self, name, info, arg_type, ret_type, gen, success_response,
-                 boxed):
-        QAPISchemaEntity.__init__(self, name, info)
+    def __init__(self, name, info, doc, arg_type, ret_type,
+                 gen, success_response, boxed):
+        QAPISchemaEntity.__init__(self, name, info, doc)
         assert not arg_type or isinstance(arg_type, str)
         assert not ret_type or isinstance(ret_type, str)
         self._arg_type_name = arg_type
@@ -1454,8 +1427,8 @@ class QAPISchemaCommand(QAPISchemaEntity):
 
 
 class QAPISchemaEvent(QAPISchemaEntity):
-    def __init__(self, name, info, arg_type, boxed):
-        QAPISchemaEntity.__init__(self, name, info)
+    def __init__(self, name, info, doc, arg_type, boxed):
+        QAPISchemaEntity.__init__(self, name, info, doc)
         assert not arg_type or isinstance(arg_type, str)
         self._arg_type_name = arg_type
         self.arg_type = None
@@ -1484,9 +1457,9 @@ class QAPISchemaEvent(QAPISchemaEntity):
 class QAPISchema(object):
     def __init__(self, fname):
         try:
-            parser = QAPISchemaParser(open(fname, "r"))
+            parser = QAPISchemaParser(open(fname, 'r'))
             self.exprs = check_exprs(parser.exprs)
-            self.docs = check_docs(parser.docs)
+            self.docs = parser.docs
             self._entity_dict = {}
             self._predefining = True
             self._def_predefineds()
@@ -1535,16 +1508,17 @@ class QAPISchema(object):
                   ('uint64', 'int',     'uint64_t'),
                   ('size',   'int',     'uint64_t'),
                   ('bool',   'boolean', 'bool'),
-                  ('any',    'value',   'QObject' + pointer_suffix)]:
+                  ('any',    'value',   'QObject' + pointer_suffix),
+                  ('null',   'null',    'QNull' + pointer_suffix)]:
             self._def_builtin_type(*t)
-        self.the_empty_object_type = QAPISchemaObjectType('q_empty', None,
-                                                          None, [], None)
+        self.the_empty_object_type = QAPISchemaObjectType(
+            'q_empty', None, None, None, [], None)
         self._def_entity(self.the_empty_object_type)
-        qtype_values = self._make_enum_members(['none', 'qnull', 'qint',
+        qtype_values = self._make_enum_members(['none', 'qnull', 'qnum',
                                                 'qstring', 'qdict', 'qlist',
-                                                'qfloat', 'qbool'])
-        self._def_entity(QAPISchemaEnumType('QType', None, qtype_values,
-                                            'QTYPE'))
+                                                'qbool'])
+        self._def_entity(QAPISchemaEnumType('QType', None, None,
+                                            qtype_values, 'QTYPE'))
 
     def _make_enum_members(self, values):
         return [QAPISchemaMember(v) for v in values]
@@ -1553,7 +1527,7 @@ class QAPISchema(object):
         # See also QAPISchemaObjectTypeMember._pretty_owner()
         name = name + 'Kind'   # Use namespace reserved by add_name()
         self._def_entity(QAPISchemaEnumType(
-            name, info, self._make_enum_members(values), None))
+            name, info, None, self._make_enum_members(values), None))
         return name
 
     def _make_array_type(self, element_type, info):
@@ -1562,22 +1536,22 @@ class QAPISchema(object):
             self._def_entity(QAPISchemaArrayType(name, info, element_type))
         return name
 
-    def _make_implicit_object_type(self, name, info, role, members):
+    def _make_implicit_object_type(self, name, info, doc, role, members):
         if not members:
             return None
         # See also QAPISchemaObjectTypeMember._pretty_owner()
         name = 'q_obj_%s-%s' % (name, role)
         if not self.lookup_entity(name, QAPISchemaObjectType):
-            self._def_entity(QAPISchemaObjectType(name, info, None,
+            self._def_entity(QAPISchemaObjectType(name, info, doc, None,
                                                   members, None))
         return name
 
-    def _def_enum_type(self, expr, info):
+    def _def_enum_type(self, expr, info, doc):
         name = expr['enum']
         data = expr['data']
         prefix = expr.get('prefix')
         self._def_entity(QAPISchemaEnumType(
-            name, info, self._make_enum_members(data), prefix))
+            name, info, doc, self._make_enum_members(data), prefix))
 
     def _make_member(self, name, typ, info):
         optional = False
@@ -1593,11 +1567,11 @@ class QAPISchema(object):
         return [self._make_member(key, value, info)
                 for (key, value) in data.iteritems()]
 
-    def _def_struct_type(self, expr, info):
+    def _def_struct_type(self, expr, info, doc):
         name = expr['struct']
         base = expr.get('base')
         data = expr['data']
-        self._def_entity(QAPISchemaObjectType(name, info, base,
+        self._def_entity(QAPISchemaObjectType(name, info, doc, base,
                                               self._make_members(data, info),
                                               None))
 
@@ -1609,10 +1583,10 @@ class QAPISchema(object):
             assert len(typ) == 1
             typ = self._make_array_type(typ[0], info)
         typ = self._make_implicit_object_type(
-            typ, info, 'wrapper', [self._make_member('data', typ, info)])
+            typ, info, None, 'wrapper', [self._make_member('data', typ, info)])
         return QAPISchemaObjectTypeVariant(case, typ)
 
-    def _def_union_type(self, expr, info):
+    def _def_union_type(self, expr, info, doc):
         name = expr['union']
         data = expr['data']
         base = expr.get('base')
@@ -1620,7 +1594,7 @@ class QAPISchema(object):
         tag_member = None
         if isinstance(base, dict):
             base = (self._make_implicit_object_type(
-                    name, info, 'base', self._make_members(base, info)))
+                name, info, doc, 'base', self._make_members(base, info)))
         if tag_name:
             variants = [self._make_variant(key, value)
                         for (key, value) in data.iteritems()]
@@ -1633,24 +1607,24 @@ class QAPISchema(object):
             tag_member = QAPISchemaObjectTypeMember('type', typ, False)
             members = [tag_member]
         self._def_entity(
-            QAPISchemaObjectType(name, info, base, members,
+            QAPISchemaObjectType(name, info, doc, base, members,
                                  QAPISchemaObjectTypeVariants(tag_name,
                                                               tag_member,
                                                               variants)))
 
-    def _def_alternate_type(self, expr, info):
+    def _def_alternate_type(self, expr, info, doc):
         name = expr['alternate']
         data = expr['data']
         variants = [self._make_variant(key, value)
                     for (key, value) in data.iteritems()]
         tag_member = QAPISchemaObjectTypeMember('type', 'QType', False)
         self._def_entity(
-            QAPISchemaAlternateType(name, info,
+            QAPISchemaAlternateType(name, info, doc,
                                     QAPISchemaObjectTypeVariants(None,
                                                                  tag_member,
                                                                  variants)))
 
-    def _def_command(self, expr, info):
+    def _def_command(self, expr, info, doc):
         name = expr['command']
         data = expr.get('data')
         rets = expr.get('returns')
@@ -1659,38 +1633,39 @@ class QAPISchema(object):
         boxed = expr.get('boxed', False)
         if isinstance(data, OrderedDict):
             data = self._make_implicit_object_type(
-                name, info, 'arg', self._make_members(data, info))
+                name, info, doc, 'arg', self._make_members(data, info))
         if isinstance(rets, list):
             assert len(rets) == 1
             rets = self._make_array_type(rets[0], info)
-        self._def_entity(QAPISchemaCommand(name, info, data, rets, gen,
-                                           success_response, boxed))
+        self._def_entity(QAPISchemaCommand(name, info, doc, data, rets,
+                                           gen, success_response, boxed))
 
-    def _def_event(self, expr, info):
+    def _def_event(self, expr, info, doc):
         name = expr['event']
         data = expr.get('data')
         boxed = expr.get('boxed', False)
         if isinstance(data, OrderedDict):
             data = self._make_implicit_object_type(
-                name, info, 'arg', self._make_members(data, info))
-        self._def_entity(QAPISchemaEvent(name, info, data, boxed))
+                name, info, doc, 'arg', self._make_members(data, info))
+        self._def_entity(QAPISchemaEvent(name, info, doc, data, boxed))
 
     def _def_exprs(self):
         for expr_elem in self.exprs:
             expr = expr_elem['expr']
             info = expr_elem['info']
+            doc = expr_elem.get('doc')
             if 'enum' in expr:
-                self._def_enum_type(expr, info)
+                self._def_enum_type(expr, info, doc)
             elif 'struct' in expr:
-                self._def_struct_type(expr, info)
+                self._def_struct_type(expr, info, doc)
             elif 'union' in expr:
-                self._def_union_type(expr, info)
+                self._def_union_type(expr, info, doc)
             elif 'alternate' in expr:
-                self._def_alternate_type(expr, info)
+                self._def_alternate_type(expr, info, doc)
             elif 'command' in expr:
-                self._def_command(expr, info)
+                self._def_command(expr, info, doc)
             elif 'event' in expr:
-                self._def_event(expr, info)
+                self._def_event(expr, info, doc)
             else:
                 assert False
 
@@ -1736,8 +1711,8 @@ def camel_to_upper(value):
     l = len(c_fun_str)
     for i in range(l):
         c = c_fun_str[i]
-        # When c is upper and no "_" appears before, do more checks
-        if c.isupper() and (i > 0) and c_fun_str[i - 1] != "_":
+        # When c is upper and no '_' appears before, do more checks
+        if c.isupper() and (i > 0) and c_fun_str[i - 1] != '_':
             if i < l - 1 and c_fun_str[i + 1].islower():
                 new_name += '_'
             elif c_fun_str[i - 1].isdigit():
@@ -1756,7 +1731,7 @@ c_name_trans = string.maketrans('.-', '__')
 
 # Map @name to a valid C identifier.
 # If @protect, avoid returning certain ticklish identifiers (like
-# C keywords) by prepending "q_".
+# C keywords) by prepending 'q_'.
 #
 # Used for converting 'name' from a 'name':'type' qapi definition
 # into a generated struct member, as well as converting type names
@@ -1794,7 +1769,7 @@ def c_name(name, protect=True):
     name = name.translate(c_name_trans)
     if protect and (name in c89_words | c99_words | c11_words | gcc_words
                     | cpp_words | polluted_words):
-        return "q_" + name
+        return 'q_' + name
     return name
 
 eatspace = '\033EATSPACE.'
@@ -1802,9 +1777,9 @@ pointer_suffix = ' *' + eatspace
 
 
 def genindent(count):
-    ret = ""
+    ret = ''
     for _ in range(count):
-        ret += " "
+        ret += ' '
     return ret
 
 indent_level = 0
@@ -1827,10 +1802,10 @@ def cgen(code, **kwds):
     if indent_level:
         indent = genindent(indent_level)
         # re.subn() lacks flags support before Python 2.7, use re.compile()
-        raw = re.subn(re.compile("^.", re.MULTILINE),
+        raw = re.subn(re.compile(r'^.', re.MULTILINE),
                       indent + r'\g<0>', raw)
         raw = raw[0]
-    return re.sub(re.escape(eatspace) + ' *', '', raw)
+    return re.sub(re.escape(eatspace) + r' *', '', raw)
 
 
 def mcgen(code, **kwds):
@@ -1865,22 +1840,23 @@ def guardend(name):
 def gen_enum_lookup(name, values, prefix=None):
     ret = mcgen('''
 
-const char *const %(c_name)s_lookup[] = {
+const QEnumLookup %(c_name)s_lookup = {
+    .array = (const char *const[]) {
 ''',
                 c_name=c_name(name))
     for value in values:
         index = c_enum_const(name, value, prefix)
         ret += mcgen('''
-    [%(index)s] = "%(value)s",
+        [%(index)s] = "%(value)s",
 ''',
                      index=index, value=value)
 
-    max_index = c_enum_const(name, '_MAX', prefix)
     ret += mcgen('''
-    [%(max_index)s] = NULL,
+    },
+    .size = %(max_index)s
 };
 ''',
-                 max_index=max_index)
+                 max_index=c_enum_const(name, '_MAX', prefix))
     return ret
 
 
@@ -1910,13 +1886,16 @@ typedef enum %(c_name)s {
 
     ret += mcgen('''
 
-extern const char *const %(c_name)s_lookup[];
+#define %(c_name)s_str(val) \\
+    qapi_enum_lookup(&%(c_name)s_lookup, (val))
+
+extern const QEnumLookup %(c_name)s_lookup;
 ''',
                  c_name=c_name(name))
     return ret
 
 
-def gen_params(arg_type, boxed, extra):
+def build_params(arg_type, boxed, extra):
     if not arg_type:
         assert not boxed
         return extra
@@ -1944,38 +1923,38 @@ def gen_params(arg_type, boxed, extra):
 #
 
 
-def parse_command_line(extra_options="", extra_long_options=[]):
+def parse_command_line(extra_options='', extra_long_options=[]):
 
     try:
         opts, args = getopt.gnu_getopt(sys.argv[1:],
-                                       "chp:o:" + extra_options,
-                                       ["source", "header", "prefix=",
-                                        "output-dir="] + extra_long_options)
+                                       'chp:o:' + extra_options,
+                                       ['source', 'header', 'prefix=',
+                                        'output-dir='] + extra_long_options)
     except getopt.GetoptError as err:
         print >>sys.stderr, "%s: %s" % (sys.argv[0], str(err))
         sys.exit(1)
 
-    output_dir = ""
-    prefix = ""
+    output_dir = ''
+    prefix = ''
     do_c = False
     do_h = False
     extra_opts = []
 
     for oa in opts:
         o, a = oa
-        if o in ("-p", "--prefix"):
-            match = re.match('([A-Za-z_.-][A-Za-z0-9_.-]*)?', a)
+        if o in ('-p', '--prefix'):
+            match = re.match(r'([A-Za-z_.-][A-Za-z0-9_.-]*)?', a)
             if match.end() != len(a):
                 print >>sys.stderr, \
                     "%s: 'funny character '%s' in argument of --prefix" \
                     % (sys.argv[0], a[match.end()])
                 sys.exit(1)
             prefix = a
-        elif o in ("-o", "--output-dir"):
-            output_dir = a + "/"
-        elif o in ("-c", "--source"):
+        elif o in ('-o', '--output-dir'):
+            output_dir = a + '/'
+        elif o in ('-c', '--source'):
             do_c = True
-        elif o in ("-h", "--header"):
+        elif o in ('-h', '--header'):
             do_h = True
         else:
             extra_opts.append(oa)
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