ff55d72eaf
Our type inheritance for both 'struct' and for flat 'union' merges key/value pairs from the base class with those from the type in question. Although the C code currently boxes things so that there is a distinction between which member is referred to, the QMP wire format does not allow passing a key more than once in a single object. Besides, if we ever change the generated C code to not be quite so boxy, we'd want to avoid duplicate member names there, too. Fix a testsuite entry added in an earlier patch, as well as adding a couple more tests to ensure we have appropriate coverage. Ensure that collisions are detected, regardless of whether there is a difference in opinion on whether the member name is optional. Signed-off-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
967 lines
34 KiB
Python
967 lines
34 KiB
Python
#
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# QAPI helper library
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#
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# Copyright IBM, Corp. 2011
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# Copyright (c) 2013-2015 Red Hat Inc.
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#
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# Authors:
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# Anthony Liguori <aliguori@us.ibm.com>
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# Markus Armbruster <armbru@redhat.com>
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#
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# This work is licensed under the terms of the GNU GPL, version 2.
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# See the COPYING file in the top-level directory.
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import re
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from ordereddict import OrderedDict
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import os
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import sys
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builtin_types = {
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'str': 'QTYPE_QSTRING',
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'int': 'QTYPE_QINT',
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'number': 'QTYPE_QFLOAT',
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'bool': 'QTYPE_QBOOL',
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'int8': 'QTYPE_QINT',
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'int16': 'QTYPE_QINT',
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'int32': 'QTYPE_QINT',
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'int64': 'QTYPE_QINT',
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'uint8': 'QTYPE_QINT',
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'uint16': 'QTYPE_QINT',
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'uint32': 'QTYPE_QINT',
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'uint64': 'QTYPE_QINT',
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'size': 'QTYPE_QINT',
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}
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# Whitelist of commands allowed to return a non-dictionary
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returns_whitelist = [
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# From QMP:
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'human-monitor-command',
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'query-migrate-cache-size',
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'query-tpm-models',
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'query-tpm-types',
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'ringbuf-read',
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# From QGA:
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'guest-file-open',
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'guest-fsfreeze-freeze',
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'guest-fsfreeze-freeze-list',
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'guest-fsfreeze-status',
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'guest-fsfreeze-thaw',
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'guest-get-time',
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'guest-set-vcpus',
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'guest-sync',
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'guest-sync-delimited',
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# From qapi-schema-test:
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'user_def_cmd3',
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]
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enum_types = []
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struct_types = []
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union_types = []
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events = []
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all_names = {}
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def error_path(parent):
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res = ""
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while parent:
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res = ("In file included from %s:%d:\n" % (parent['file'],
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parent['line'])) + res
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parent = parent['parent']
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return res
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class QAPISchemaError(Exception):
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def __init__(self, schema, msg):
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self.input_file = schema.input_file
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self.msg = msg
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self.col = 1
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self.line = schema.line
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for ch in schema.src[schema.line_pos:schema.pos]:
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if ch == '\t':
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self.col = (self.col + 7) % 8 + 1
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else:
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self.col += 1
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self.info = schema.parent_info
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def __str__(self):
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return error_path(self.info) + \
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"%s:%d:%d: %s" % (self.input_file, self.line, self.col, self.msg)
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class QAPIExprError(Exception):
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def __init__(self, expr_info, msg):
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self.info = expr_info
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self.msg = msg
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def __str__(self):
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return error_path(self.info['parent']) + \
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"%s:%d: %s" % (self.info['file'], self.info['line'], self.msg)
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class QAPISchema:
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def __init__(self, fp, input_relname=None, include_hist=[],
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previously_included=[], parent_info=None):
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""" include_hist is a stack used to detect inclusion cycles
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previously_included is a global state used to avoid multiple
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inclusions of the same file"""
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input_fname = os.path.abspath(fp.name)
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if input_relname is None:
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input_relname = fp.name
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self.input_dir = os.path.dirname(input_fname)
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self.input_file = input_relname
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self.include_hist = include_hist + [(input_relname, input_fname)]
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previously_included.append(input_fname)
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self.parent_info = parent_info
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self.src = fp.read()
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if self.src == '' or self.src[-1] != '\n':
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self.src += '\n'
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self.cursor = 0
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self.line = 1
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self.line_pos = 0
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self.exprs = []
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self.accept()
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while self.tok != None:
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expr_info = {'file': input_relname, 'line': self.line, 'parent': self.parent_info}
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expr = self.get_expr(False)
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if isinstance(expr, dict) and "include" in expr:
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if len(expr) != 1:
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raise QAPIExprError(expr_info, "Invalid 'include' directive")
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include = expr["include"]
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if not isinstance(include, str):
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raise QAPIExprError(expr_info,
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'Expected a file name (string), got: %s'
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% include)
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include_path = os.path.join(self.input_dir, include)
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for elem in self.include_hist:
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if include_path == elem[1]:
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raise QAPIExprError(expr_info, "Inclusion loop for %s"
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% include)
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# skip multiple include of the same file
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if include_path in previously_included:
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continue
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try:
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fobj = open(include_path, 'r')
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except IOError, e:
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raise QAPIExprError(expr_info,
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'%s: %s' % (e.strerror, include))
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exprs_include = QAPISchema(fobj, include, self.include_hist,
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previously_included, expr_info)
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self.exprs.extend(exprs_include.exprs)
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else:
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expr_elem = {'expr': expr,
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'info': expr_info}
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self.exprs.append(expr_elem)
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def accept(self):
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while True:
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self.tok = self.src[self.cursor]
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self.pos = self.cursor
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self.cursor += 1
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self.val = None
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if self.tok == '#':
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self.cursor = self.src.find('\n', self.cursor)
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elif self.tok in ['{', '}', ':', ',', '[', ']']:
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return
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elif self.tok == "'":
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string = ''
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esc = False
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while True:
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ch = self.src[self.cursor]
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self.cursor += 1
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if ch == '\n':
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raise QAPISchemaError(self,
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'Missing terminating "\'"')
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if esc:
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if ch == 'b':
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string += '\b'
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elif ch == 'f':
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string += '\f'
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elif ch == 'n':
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string += '\n'
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elif ch == 'r':
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string += '\r'
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elif ch == 't':
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string += '\t'
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elif ch == 'u':
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value = 0
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for x in range(0, 4):
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ch = self.src[self.cursor]
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self.cursor += 1
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if ch not in "0123456789abcdefABCDEF":
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raise QAPISchemaError(self,
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'\\u escape needs 4 '
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'hex digits')
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value = (value << 4) + int(ch, 16)
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# If Python 2 and 3 didn't disagree so much on
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# how to handle Unicode, then we could allow
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# Unicode string defaults. But most of QAPI is
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# ASCII-only, so we aren't losing much for now.
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if not value or value > 0x7f:
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raise QAPISchemaError(self,
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'For now, \\u escape '
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'only supports non-zero '
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'values up to \\u007f')
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string += chr(value)
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elif ch in "\\/'\"":
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string += ch
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else:
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raise QAPISchemaError(self,
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"Unknown escape \\%s" %ch)
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esc = False
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elif ch == "\\":
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esc = True
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elif ch == "'":
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self.val = string
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return
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else:
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string += ch
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elif self.tok in "tfn":
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val = self.src[self.cursor - 1:]
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if val.startswith("true"):
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self.val = True
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self.cursor += 3
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return
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elif val.startswith("false"):
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self.val = False
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self.cursor += 4
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return
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elif val.startswith("null"):
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self.val = None
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self.cursor += 3
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return
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elif self.tok == '\n':
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if self.cursor == len(self.src):
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self.tok = None
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return
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self.line += 1
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self.line_pos = self.cursor
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elif not self.tok.isspace():
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raise QAPISchemaError(self, 'Stray "%s"' % self.tok)
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def get_members(self):
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expr = OrderedDict()
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if self.tok == '}':
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self.accept()
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return expr
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if self.tok != "'":
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raise QAPISchemaError(self, 'Expected string or "}"')
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while True:
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key = self.val
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self.accept()
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if self.tok != ':':
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raise QAPISchemaError(self, 'Expected ":"')
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self.accept()
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if key in expr:
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raise QAPISchemaError(self, 'Duplicate key "%s"' % key)
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expr[key] = self.get_expr(True)
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if self.tok == '}':
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self.accept()
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return expr
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if self.tok != ',':
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raise QAPISchemaError(self, 'Expected "," or "}"')
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self.accept()
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if self.tok != "'":
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raise QAPISchemaError(self, 'Expected string')
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def get_values(self):
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expr = []
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if self.tok == ']':
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self.accept()
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return expr
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if not self.tok in "{['tfn":
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raise QAPISchemaError(self, 'Expected "{", "[", "]", string, '
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'boolean or "null"')
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while True:
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expr.append(self.get_expr(True))
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if self.tok == ']':
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self.accept()
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return expr
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if self.tok != ',':
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raise QAPISchemaError(self, 'Expected "," or "]"')
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self.accept()
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def get_expr(self, nested):
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if self.tok != '{' and not nested:
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raise QAPISchemaError(self, 'Expected "{"')
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if self.tok == '{':
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self.accept()
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expr = self.get_members()
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elif self.tok == '[':
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self.accept()
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expr = self.get_values()
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elif self.tok in "'tfn":
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expr = self.val
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self.accept()
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else:
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raise QAPISchemaError(self, 'Expected "{", "[" or string')
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return expr
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def find_base_fields(base):
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base_struct_define = find_struct(base)
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if not base_struct_define:
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return None
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return base_struct_define['data']
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# Return the qtype of an alternate branch, or None on error.
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def find_alternate_member_qtype(qapi_type):
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if builtin_types.has_key(qapi_type):
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return builtin_types[qapi_type]
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elif find_struct(qapi_type):
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return "QTYPE_QDICT"
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elif find_enum(qapi_type):
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return "QTYPE_QSTRING"
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elif find_union(qapi_type):
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return "QTYPE_QDICT"
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return None
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# Return the discriminator enum define if discriminator is specified as an
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# enum type, otherwise return None.
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def discriminator_find_enum_define(expr):
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base = expr.get('base')
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discriminator = expr.get('discriminator')
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if not (discriminator and base):
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return None
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base_fields = find_base_fields(base)
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if not base_fields:
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return None
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discriminator_type = base_fields.get(discriminator)
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if not discriminator_type:
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return None
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return find_enum(discriminator_type)
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valid_name = re.compile('^[a-zA-Z_][a-zA-Z0-9_.-]*$')
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def check_name(expr_info, source, name, allow_optional = False,
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enum_member = False):
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global valid_name
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membername = name
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if not isinstance(name, str):
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raise QAPIExprError(expr_info,
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"%s requires a string name" % source)
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if name.startswith('*'):
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membername = name[1:]
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if not allow_optional:
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raise QAPIExprError(expr_info,
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"%s does not allow optional name '%s'"
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% (source, name))
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# Enum members can start with a digit, because the generated C
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# code always prefixes it with the enum name
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if enum_member:
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membername = '_' + membername
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if not valid_name.match(membername):
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raise QAPIExprError(expr_info,
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"%s uses invalid name '%s'" % (source, name))
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def check_type(expr_info, source, value, allow_array = False,
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allow_dict = False, allow_optional = False,
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allow_star = False, allow_metas = []):
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global all_names
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orig_value = value
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if value is None:
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return
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if allow_star and value == '**':
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return
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# Check if array type for value is okay
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if isinstance(value, list):
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if not allow_array:
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raise QAPIExprError(expr_info,
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"%s cannot be an array" % source)
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if len(value) != 1 or not isinstance(value[0], str):
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raise QAPIExprError(expr_info,
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"%s: array type must contain single type name"
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% source)
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value = value[0]
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orig_value = "array of %s" %value
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# Check if type name for value is okay
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if isinstance(value, str):
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if value == '**':
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raise QAPIExprError(expr_info,
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"%s uses '**' but did not request 'gen':false"
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% source)
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if not value in all_names:
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raise QAPIExprError(expr_info,
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"%s uses unknown type '%s'"
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% (source, orig_value))
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if not all_names[value] in allow_metas:
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raise QAPIExprError(expr_info,
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"%s cannot use %s type '%s'"
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% (source, all_names[value], orig_value))
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return
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# value is a dictionary, check that each member is okay
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if not isinstance(value, OrderedDict):
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raise QAPIExprError(expr_info,
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"%s should be a dictionary" % source)
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if not allow_dict:
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raise QAPIExprError(expr_info,
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"%s should be a type name" % source)
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for (key, arg) in value.items():
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check_name(expr_info, "Member of %s" % source, key,
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allow_optional=allow_optional)
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# Todo: allow dictionaries to represent default values of
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# an optional argument.
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check_type(expr_info, "Member '%s' of %s" % (key, source), arg,
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allow_array=True, allow_star=allow_star,
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allow_metas=['built-in', 'union', 'alternate', 'struct',
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'enum'])
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def check_member_clash(expr_info, base_name, data, source = ""):
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base = find_struct(base_name)
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assert base
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base_members = base['data']
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for key in data.keys():
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if key.startswith('*'):
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key = key[1:]
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if key in base_members or "*" + key in base_members:
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raise QAPIExprError(expr_info,
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"Member name '%s'%s clashes with base '%s'"
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% (key, source, base_name))
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if base.get('base'):
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check_member_clash(expr_info, base['base'], data, source)
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def check_command(expr, expr_info):
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name = expr['command']
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allow_star = expr.has_key('gen')
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check_type(expr_info, "'data' for command '%s'" % name,
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expr.get('data'), allow_dict=True, allow_optional=True,
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allow_metas=['union', 'struct'], allow_star=allow_star)
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returns_meta = ['union', 'struct']
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if name in returns_whitelist:
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returns_meta += ['built-in', 'alternate', 'enum']
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check_type(expr_info, "'returns' for command '%s'" % name,
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expr.get('returns'), allow_array=True, allow_dict=True,
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allow_optional=True, allow_metas=returns_meta,
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allow_star=allow_star)
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def check_event(expr, expr_info):
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global events
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name = expr['event']
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params = expr.get('data')
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if name.upper() == 'MAX':
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raise QAPIExprError(expr_info, "Event name 'MAX' cannot be created")
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events.append(name)
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check_type(expr_info, "'data' for event '%s'" % name,
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expr.get('data'), allow_dict=True, allow_optional=True,
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allow_metas=['union', 'struct'])
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def check_union(expr, expr_info):
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name = expr['union']
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base = expr.get('base')
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discriminator = expr.get('discriminator')
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members = expr['data']
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values = { 'MAX': '(automatic)' }
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# If the object has a member 'base', its value must name a struct,
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# and there must be a discriminator.
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if base is not None:
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if discriminator is None:
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raise QAPIExprError(expr_info,
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"Union '%s' requires a discriminator to go "
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"along with base" %name)
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# Two types of unions, determined by discriminator.
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# With no discriminator it is a simple union.
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if discriminator is None:
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enum_define = None
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allow_metas=['built-in', 'union', 'alternate', 'struct', 'enum']
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if base is not None:
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raise QAPIExprError(expr_info,
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"Simple union '%s' must not have a base"
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% name)
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# Else, it's a flat union.
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else:
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# The object must have a string member 'base'.
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if not isinstance(base, str):
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raise QAPIExprError(expr_info,
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"Flat union '%s' must have a string base field"
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% name)
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base_fields = find_base_fields(base)
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if not base_fields:
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raise QAPIExprError(expr_info,
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"Base '%s' is not a valid struct"
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% base)
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# The value of member 'discriminator' must name a non-optional
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# member of the base struct.
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|
check_name(expr_info, "Discriminator of flat union '%s'" % name,
|
|
discriminator)
|
|
discriminator_type = base_fields.get(discriminator)
|
|
if not discriminator_type:
|
|
raise QAPIExprError(expr_info,
|
|
"Discriminator '%s' is not a member of base "
|
|
"struct '%s'"
|
|
% (discriminator, base))
|
|
enum_define = find_enum(discriminator_type)
|
|
allow_metas=['struct']
|
|
# Do not allow string discriminator
|
|
if not enum_define:
|
|
raise QAPIExprError(expr_info,
|
|
"Discriminator '%s' must be of enumeration "
|
|
"type" % discriminator)
|
|
|
|
# Check every branch
|
|
for (key, value) in members.items():
|
|
check_name(expr_info, "Member of union '%s'" % name, key)
|
|
|
|
# Each value must name a known type; furthermore, in flat unions,
|
|
# branches must be a struct with no overlapping member names
|
|
check_type(expr_info, "Member '%s' of union '%s'" % (key, name),
|
|
value, allow_array=True, allow_metas=allow_metas)
|
|
if base:
|
|
branch_struct = find_struct(value)
|
|
assert branch_struct
|
|
check_member_clash(expr_info, base, branch_struct['data'],
|
|
" of branch '%s'" % key)
|
|
|
|
# If the discriminator names an enum type, then all members
|
|
# of 'data' must also be members of the enum type.
|
|
if enum_define:
|
|
if not key in enum_define['enum_values']:
|
|
raise QAPIExprError(expr_info,
|
|
"Discriminator value '%s' is not found in "
|
|
"enum '%s'" %
|
|
(key, enum_define["enum_name"]))
|
|
|
|
# Otherwise, check for conflicts in the generated enum
|
|
else:
|
|
c_key = _generate_enum_string(key)
|
|
if c_key in values:
|
|
raise QAPIExprError(expr_info,
|
|
"Union '%s' member '%s' clashes with '%s'"
|
|
% (name, key, values[c_key]))
|
|
values[c_key] = key
|
|
|
|
def check_alternate(expr, expr_info):
|
|
name = expr['alternate']
|
|
members = expr['data']
|
|
values = { 'MAX': '(automatic)' }
|
|
types_seen = {}
|
|
|
|
# Check every branch
|
|
for (key, value) in members.items():
|
|
check_name(expr_info, "Member of alternate '%s'" % name, key)
|
|
|
|
# Check for conflicts in the generated enum
|
|
c_key = _generate_enum_string(key)
|
|
if c_key in values:
|
|
raise QAPIExprError(expr_info,
|
|
"Alternate '%s' member '%s' clashes with '%s'"
|
|
% (name, key, values[c_key]))
|
|
values[c_key] = key
|
|
|
|
# Ensure alternates have no type conflicts.
|
|
check_type(expr_info, "Member '%s' of alternate '%s'" % (key, name),
|
|
value,
|
|
allow_metas=['built-in', 'union', 'struct', 'enum'])
|
|
qtype = find_alternate_member_qtype(value)
|
|
assert qtype
|
|
if qtype in types_seen:
|
|
raise QAPIExprError(expr_info,
|
|
"Alternate '%s' member '%s' can't "
|
|
"be distinguished from member '%s'"
|
|
% (name, key, types_seen[qtype]))
|
|
types_seen[qtype] = key
|
|
|
|
def check_enum(expr, expr_info):
|
|
name = expr['enum']
|
|
members = expr.get('data')
|
|
values = { 'MAX': '(automatic)' }
|
|
|
|
if not isinstance(members, list):
|
|
raise QAPIExprError(expr_info,
|
|
"Enum '%s' requires an array for 'data'" % name)
|
|
for member in members:
|
|
check_name(expr_info, "Member of enum '%s'" %name, member,
|
|
enum_member=True)
|
|
key = _generate_enum_string(member)
|
|
if key in values:
|
|
raise QAPIExprError(expr_info,
|
|
"Enum '%s' member '%s' clashes with '%s'"
|
|
% (name, member, values[key]))
|
|
values[key] = member
|
|
|
|
def check_struct(expr, expr_info):
|
|
name = expr['struct']
|
|
members = expr['data']
|
|
|
|
check_type(expr_info, "'data' for struct '%s'" % name, members,
|
|
allow_dict=True, allow_optional=True)
|
|
check_type(expr_info, "'base' for struct '%s'" % name, expr.get('base'),
|
|
allow_metas=['struct'])
|
|
if expr.get('base'):
|
|
check_member_clash(expr_info, expr['base'], expr['data'])
|
|
|
|
def check_exprs(schema):
|
|
for expr_elem in schema.exprs:
|
|
expr = expr_elem['expr']
|
|
info = expr_elem['info']
|
|
|
|
if expr.has_key('enum'):
|
|
check_enum(expr, info)
|
|
elif expr.has_key('union'):
|
|
check_union(expr, info)
|
|
elif expr.has_key('alternate'):
|
|
check_alternate(expr, info)
|
|
elif expr.has_key('struct'):
|
|
check_struct(expr, info)
|
|
elif expr.has_key('command'):
|
|
check_command(expr, info)
|
|
elif expr.has_key('event'):
|
|
check_event(expr, info)
|
|
else:
|
|
assert False, 'unexpected meta type'
|
|
|
|
def check_keys(expr_elem, meta, required, optional=[]):
|
|
expr = expr_elem['expr']
|
|
info = expr_elem['info']
|
|
name = expr[meta]
|
|
if not isinstance(name, str):
|
|
raise QAPIExprError(info,
|
|
"'%s' key must have a string value" % meta)
|
|
required = required + [ meta ]
|
|
for (key, value) in expr.items():
|
|
if not key in required and not key in optional:
|
|
raise QAPIExprError(info,
|
|
"Unknown key '%s' in %s '%s'"
|
|
% (key, meta, name))
|
|
if (key == 'gen' or key == 'success-response') and value != False:
|
|
raise QAPIExprError(info,
|
|
"'%s' of %s '%s' should only use false value"
|
|
% (key, meta, name))
|
|
for key in required:
|
|
if not expr.has_key(key):
|
|
raise QAPIExprError(info,
|
|
"Key '%s' is missing from %s '%s'"
|
|
% (key, meta, name))
|
|
|
|
|
|
def parse_schema(input_file):
|
|
global all_names
|
|
exprs = []
|
|
|
|
# First pass: read entire file into memory
|
|
try:
|
|
schema = QAPISchema(open(input_file, "r"))
|
|
except (QAPISchemaError, QAPIExprError), e:
|
|
print >>sys.stderr, e
|
|
exit(1)
|
|
|
|
try:
|
|
# Next pass: learn the types and check for valid expression keys. At
|
|
# this point, top-level 'include' has already been flattened.
|
|
for builtin in builtin_types.keys():
|
|
all_names[builtin] = 'built-in'
|
|
for expr_elem in schema.exprs:
|
|
expr = expr_elem['expr']
|
|
info = expr_elem['info']
|
|
if expr.has_key('enum'):
|
|
check_keys(expr_elem, 'enum', ['data'])
|
|
add_enum(expr['enum'], info, expr['data'])
|
|
elif expr.has_key('union'):
|
|
check_keys(expr_elem, 'union', ['data'],
|
|
['base', 'discriminator'])
|
|
add_union(expr, info)
|
|
elif expr.has_key('alternate'):
|
|
check_keys(expr_elem, 'alternate', ['data'])
|
|
add_name(expr['alternate'], info, 'alternate')
|
|
elif expr.has_key('struct'):
|
|
check_keys(expr_elem, 'struct', ['data'], ['base'])
|
|
add_struct(expr, info)
|
|
elif expr.has_key('command'):
|
|
check_keys(expr_elem, 'command', [],
|
|
['data', 'returns', 'gen', 'success-response'])
|
|
add_name(expr['command'], info, 'command')
|
|
elif expr.has_key('event'):
|
|
check_keys(expr_elem, 'event', [], ['data'])
|
|
add_name(expr['event'], info, 'event')
|
|
else:
|
|
raise QAPIExprError(expr_elem['info'],
|
|
"Expression is missing metatype")
|
|
exprs.append(expr)
|
|
|
|
# Try again for hidden UnionKind enum
|
|
for expr_elem in schema.exprs:
|
|
expr = expr_elem['expr']
|
|
if expr.has_key('union'):
|
|
if not discriminator_find_enum_define(expr):
|
|
add_enum('%sKind' % expr['union'], expr_elem['info'],
|
|
implicit=True)
|
|
elif expr.has_key('alternate'):
|
|
add_enum('%sKind' % expr['alternate'], expr_elem['info'],
|
|
implicit=True)
|
|
|
|
# Final pass - validate that exprs make sense
|
|
check_exprs(schema)
|
|
except QAPIExprError, e:
|
|
print >>sys.stderr, e
|
|
exit(1)
|
|
|
|
return exprs
|
|
|
|
def parse_args(typeinfo):
|
|
if isinstance(typeinfo, str):
|
|
struct = find_struct(typeinfo)
|
|
assert struct != None
|
|
typeinfo = struct['data']
|
|
|
|
for member in typeinfo:
|
|
argname = member
|
|
argentry = typeinfo[member]
|
|
optional = False
|
|
if member.startswith('*'):
|
|
argname = member[1:]
|
|
optional = True
|
|
# Todo: allow argentry to be OrderedDict, for providing the
|
|
# value of an optional argument.
|
|
yield (argname, argentry, optional)
|
|
|
|
def de_camel_case(name):
|
|
new_name = ''
|
|
for ch in name:
|
|
if ch.isupper() and new_name:
|
|
new_name += '_'
|
|
if ch == '-':
|
|
new_name += '_'
|
|
else:
|
|
new_name += ch.lower()
|
|
return new_name
|
|
|
|
def camel_case(name):
|
|
new_name = ''
|
|
first = True
|
|
for ch in name:
|
|
if ch in ['_', '-']:
|
|
first = True
|
|
elif first:
|
|
new_name += ch.upper()
|
|
first = False
|
|
else:
|
|
new_name += ch.lower()
|
|
return new_name
|
|
|
|
def c_var(name, protect=True):
|
|
# ANSI X3J11/88-090, 3.1.1
|
|
c89_words = set(['auto', 'break', 'case', 'char', 'const', 'continue',
|
|
'default', 'do', 'double', 'else', 'enum', 'extern', 'float',
|
|
'for', 'goto', 'if', 'int', 'long', 'register', 'return',
|
|
'short', 'signed', 'sizeof', 'static', 'struct', 'switch',
|
|
'typedef', 'union', 'unsigned', 'void', 'volatile', 'while'])
|
|
# ISO/IEC 9899:1999, 6.4.1
|
|
c99_words = set(['inline', 'restrict', '_Bool', '_Complex', '_Imaginary'])
|
|
# ISO/IEC 9899:2011, 6.4.1
|
|
c11_words = set(['_Alignas', '_Alignof', '_Atomic', '_Generic', '_Noreturn',
|
|
'_Static_assert', '_Thread_local'])
|
|
# GCC http://gcc.gnu.org/onlinedocs/gcc-4.7.1/gcc/C-Extensions.html
|
|
# excluding _.*
|
|
gcc_words = set(['asm', 'typeof'])
|
|
# C++ ISO/IEC 14882:2003 2.11
|
|
cpp_words = set(['bool', 'catch', 'class', 'const_cast', 'delete',
|
|
'dynamic_cast', 'explicit', 'false', 'friend', 'mutable',
|
|
'namespace', 'new', 'operator', 'private', 'protected',
|
|
'public', 'reinterpret_cast', 'static_cast', 'template',
|
|
'this', 'throw', 'true', 'try', 'typeid', 'typename',
|
|
'using', 'virtual', 'wchar_t',
|
|
# alternative representations
|
|
'and', 'and_eq', 'bitand', 'bitor', 'compl', 'not',
|
|
'not_eq', 'or', 'or_eq', 'xor', 'xor_eq'])
|
|
# namespace pollution:
|
|
polluted_words = set(['unix', 'errno'])
|
|
if protect and (name in c89_words | c99_words | c11_words | gcc_words | cpp_words | polluted_words):
|
|
return "q_" + name
|
|
return name.replace('-', '_').lstrip("*")
|
|
|
|
def c_fun(name, protect=True):
|
|
return c_var(name, protect).replace('.', '_')
|
|
|
|
def c_list_type(name):
|
|
return '%sList' % name
|
|
|
|
def type_name(name):
|
|
if type(name) == list:
|
|
return c_list_type(name[0])
|
|
return name
|
|
|
|
def add_name(name, info, meta, implicit = False):
|
|
global all_names
|
|
check_name(info, "'%s'" % meta, name)
|
|
if name in all_names:
|
|
raise QAPIExprError(info,
|
|
"%s '%s' is already defined"
|
|
% (all_names[name], name))
|
|
if not implicit and name[-4:] == 'Kind':
|
|
raise QAPIExprError(info,
|
|
"%s '%s' should not end in 'Kind'"
|
|
% (meta, name))
|
|
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) != None
|
|
|
|
eatspace = '\033EATSPACE.'
|
|
|
|
# A special suffix is added in c_type() for pointer types, and it's
|
|
# stripped in mcgen(). So please notice this when you check the return
|
|
# value of c_type() outside mcgen().
|
|
def c_type(name, is_param=False):
|
|
if name == 'str':
|
|
if is_param:
|
|
return 'const char *' + eatspace
|
|
return 'char *' + eatspace
|
|
|
|
elif name == 'int':
|
|
return 'int64_t'
|
|
elif (name == 'int8' or name == 'int16' or name == 'int32' or
|
|
name == 'int64' or name == 'uint8' or name == 'uint16' or
|
|
name == 'uint32' or name == 'uint64'):
|
|
return name + '_t'
|
|
elif name == 'size':
|
|
return 'uint64_t'
|
|
elif name == 'bool':
|
|
return 'bool'
|
|
elif name == 'number':
|
|
return 'double'
|
|
elif type(name) == list:
|
|
return '%s *%s' % (c_list_type(name[0]), eatspace)
|
|
elif is_enum(name):
|
|
return name
|
|
elif name == None or len(name) == 0:
|
|
return 'void'
|
|
elif name in events:
|
|
return '%sEvent *%s' % (camel_case(name), eatspace)
|
|
else:
|
|
return '%s *%s' % (name, eatspace)
|
|
|
|
def is_c_ptr(name):
|
|
suffix = "*" + eatspace
|
|
return c_type(name).endswith(suffix)
|
|
|
|
def genindent(count):
|
|
ret = ""
|
|
for i in range(count):
|
|
ret += " "
|
|
return ret
|
|
|
|
indent_level = 0
|
|
|
|
def push_indent(indent_amount=4):
|
|
global indent_level
|
|
indent_level += indent_amount
|
|
|
|
def pop_indent(indent_amount=4):
|
|
global indent_level
|
|
indent_level -= indent_amount
|
|
|
|
def cgen(code, **kwds):
|
|
indent = genindent(indent_level)
|
|
lines = code.split('\n')
|
|
lines = map(lambda x: indent + x, lines)
|
|
return '\n'.join(lines) % kwds + '\n'
|
|
|
|
def mcgen(code, **kwds):
|
|
raw = cgen('\n'.join(code.split('\n')[1:-1]), **kwds)
|
|
return re.sub(re.escape(eatspace) + ' *', '', raw)
|
|
|
|
def basename(filename):
|
|
return filename.split("/")[-1]
|
|
|
|
def guardname(filename):
|
|
guard = basename(filename).rsplit(".", 1)[0]
|
|
for substr in [".", " ", "-"]:
|
|
guard = guard.replace(substr, "_")
|
|
return guard.upper() + '_H'
|
|
|
|
def guardstart(name):
|
|
return mcgen('''
|
|
|
|
#ifndef %(name)s
|
|
#define %(name)s
|
|
|
|
''',
|
|
name=guardname(name))
|
|
|
|
def guardend(name):
|
|
return mcgen('''
|
|
|
|
#endif /* %(name)s */
|
|
|
|
''',
|
|
name=guardname(name))
|
|
|
|
# ENUMName -> ENUM_NAME, EnumName1 -> ENUM_NAME1
|
|
# ENUM_NAME -> ENUM_NAME, ENUM_NAME1 -> ENUM_NAME1, ENUM_Name2 -> ENUM_NAME2
|
|
# ENUM24_Name -> ENUM24_NAME
|
|
def _generate_enum_string(value):
|
|
c_fun_str = c_fun(value, False)
|
|
if value.isupper():
|
|
return c_fun_str
|
|
|
|
new_name = ''
|
|
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] != "_":
|
|
# Case 1: next string is lower
|
|
# Case 2: previous string is digit
|
|
if (i < (l - 1) and c_fun_str[i + 1].islower()) or \
|
|
c_fun_str[i - 1].isdigit():
|
|
new_name += '_'
|
|
new_name += c
|
|
return new_name.lstrip('_').upper()
|
|
|
|
def generate_enum_full_value(enum_name, enum_value):
|
|
abbrev_string = _generate_enum_string(enum_name)
|
|
value_string = _generate_enum_string(enum_value)
|
|
return "%s_%s" % (abbrev_string, value_string)
|