tokenRe = "#?" + idRe + "|[0-9]+|."
inComment = False
inDirective = False
+
+def getLine():
+ global line
+ global lineNumber
+ line = inputFile.readline()
+ lineNumber += 1
+ if line == "":
+ fatal("unexpected end of input")
+
def getToken():
global token
global line
return False
def fatal(msg):
- sys.stderr.write("%s:%d: error at \"%s\": %s\n" % (fileName, lineNumber, token, msg))
+ sys.stderr.write("%s:%d: %s\n" % (fileName, lineNumber, msg))
sys.exit(1)
def skipDirective():
outputs a C source file for translating OpenFlow error codes into
strings, for use as lib/ofp-errors.c in the Open vSwitch source tree.
-This program is specialized for reading include/openflow/openflow.h
-and include/openflow/nicira-ext.h. It will not work on arbitrary
-header files without extensions.''' % {"argv0": argv0}
+This program is specialized for reading lib/ofp-errors.h. It will not
+work on arbitrary header files without extensions.\
+''' % {"argv0": argv0}
sys.exit(0)
def extract_ofp_errors(filenames):
error_types = {}
+ comments = []
+ names = []
+ domain = {}
+ reverse = {}
+ for domain_name in ("OF1.0", "OF1.1", "NX1.0", "NX1.1"):
+ domain[domain_name] = {}
+ reverse[domain_name] = {}
+
global fileName
for fileName in filenames:
global inputFile
global lineNumber
inputFile = open(fileName)
lineNumber = 0
- while getToken():
- if token in ("#ifdef", "#ifndef", "#include",
- "#endif", "#elif", "#else", '#define'):
- skipDirective()
- elif match('enum'):
- forceId()
- enum_tag = token
- getToken()
-
- forceMatch("{")
-
- constants = []
- while isId(token):
- constants.append(token)
- getToken()
- if match('='):
- while token != ',' and token != '}':
- getToken()
- match(',')
-
- forceMatch('}')
-
- if enum_tag == "ofp_error_type":
- error_types = {}
- for error_type in constants:
- error_types[error_type] = []
- elif enum_tag == 'nx_vendor_code':
- pass
- elif enum_tag.endswith('_code'):
- error_type = 'OFPET_%s' % '_'.join(enum_tag.split('_')[1:-1]).upper()
- if error_type not in error_types:
- fatal("enum %s looks like an error code enumeration but %s is unknown" % (enum_tag, error_type))
- error_types[error_type] += constants
- elif token in ('struct', 'union'):
- getToken()
- forceId()
- getToken()
- forceMatch('{')
- while not match('}'):
- getToken()
- elif match('OFP_ASSERT') or match('BOOST_STATIC_ASSERT'):
- while token != ';':
- getToken()
- else:
- fatal("parse error")
+
+ while True:
+ getLine()
+ if re.match('enum ofperr', line):
+ break
+
+ while True:
+ getLine()
+ if line.startswith('/*') or not line or line.isspace():
+ continue
+ elif re.match('}', line):
+ break
+
+ m = re.match('\s+/\* ((?:.(?!\. ))+.)\. (.*)$', line)
+ if not m:
+ fatal("unexpected syntax between errors")
+
+ dsts, comment = m.groups()
+
+ comment.rstrip()
+ while not comment.endswith('*/'):
+ getLine()
+ if line.startswith('/*') or not line or line.isspace():
+ fatal("unexpected syntax within error")
+ comment += ' %s' % line.lstrip('* \t').rstrip(' \t\r\n')
+ comment = comment[:-2].rstrip()
+
+ getLine()
+ m = re.match('\s+(?:OFPERR_((?:OFP|NX)[A-Z0-9_]+))(\s*=\s*OFPERR_OFS)?,',
+ line)
+ if not m:
+ fatal("syntax error expecting enum value")
+
+ enum = m.group(1)
+
+ comments.append(comment)
+ names.append(enum)
+
+ for dst in dsts.split(', '):
+ m = re.match(r'([A-Z0-9.]+)\((\d+)(?:,(\d+))?\)$', dst)
+ if not m:
+ fatal("%s: syntax error in destination" % dst)
+ targets = m.group(1)
+ type_ = int(m.group(2))
+ if m.group(3):
+ code = int(m.group(3))
+ else:
+ code = None
+
+ target_map = {"OF": ("OF1.0", "OF1.1"),
+ "OF1.0": ("OF1.0",),
+ "OF1.1": ("OF1.1",),
+ "NX": ("OF1.0", "OF1.1"),
+ "NX1.0": ("OF1.0",),
+ "NX1.1": ("OF1.1",)}
+ if targets not in target_map:
+ fatal("%s: unknown error domain" % target)
+ for target in target_map[targets]:
+ if type_ not in domain[target]:
+ domain[target][type_] = {}
+ if code in domain[target][type_]:
+ fatal("%s: duplicate assignment in domain" % dst)
+ domain[target][type_][code] = enum
+ reverse[target][enum] = (type_, code)
+
inputFile.close()
- print "/* -*- buffer-read-only: t -*- */"
- print "#include <config.h>"
- print '#include "ofp-errors.h"'
- print "#include <inttypes.h>"
- print "#include <stdio.h>"
- for fileName in sys.argv[1:]:
- print '#include "%s"' % fileName
- print '#include "type-props.h"'
-
- for error_type, constants in sorted(error_types.items()):
- tag = 'ofp_%s_code' % re.sub('^OFPET_', '', error_type).lower()
- print_enum(tag, constants, "static ")
- print_enum("ofp_error_type", error_types.keys(), "")
- print """
-const char *
-ofp_error_code_to_string(uint16_t type, uint16_t code)
-{
- switch (type) {\
-"""
- for error_type in error_types:
- tag = 'ofp_%s_code' % re.sub('^OFPET_', '', error_type).lower()
- print " case %s:" % error_type
- print " return %s_to_string(code);" % tag
print """\
+/* Generated automatically; do not modify! -*- buffer-read-only: t -*- */
+
+#define OFPERR_N_ERRORS %d
+
+struct ofperr_domain {
+ const char *name;
+ uint8_t version;
+ enum ofperr (*decode)(uint16_t type, uint16_t code);
+ enum ofperr (*decode_type)(uint16_t type);
+ struct pair errors[OFPERR_N_ERRORS];
+};
+
+static const char *error_names[OFPERR_N_ERRORS] = {
+%s
+};
+
+static const char *error_comments[OFPERR_N_ERRORS] = {
+%s
+};\
+""" % (len(names),
+ '\n'.join(' "%s",' % name for name in names),
+ '\n'.join(' "%s",' % re.sub(r'(["\\])', r'\\\1', comment)
+ for comment in comments))
+
+ def output_domain(map, name, description, version):
+ print """
+static enum ofperr
+%s_decode(uint16_t type, uint16_t code)
+{
+ switch ((type << 16) | code) {""" % name
+ for enum in names:
+ if enum not in map:
+ continue
+ type_, code = map[enum]
+ if code is None:
+ continue
+ print " case (%d << 16) | %d:" % (type_, code)
+ print " return OFPERR_%s;" % enum
+ print """\
}
- return NULL;
-}\
-"""
+
+ return 0;
+}
+
+static enum ofperr
+%s_decode_type(uint16_t type)
+{
+ switch (type) {""" % name
+ for enum in names:
+ if enum not in map:
+ continue
+ type_, code = map[enum]
+ if code is not None:
+ continue
+ print " case %d:" % type_
+ print " return OFPERR_%s;" % enum
+ print """\
+ }
+
+ return 0;
+}"""
+
+ print """
+const struct ofperr_domain %s = {
+ "%s",
+ %d,
+ %s_decode,
+ %s_decode_type,
+ {""" % (name, description, version, name, name)
+ for enum in names:
+ if enum in map:
+ type_, code = map[enum]
+ if code == None:
+ code = -1
+ else:
+ type_ = code = -1
+ print " { %2d, %3d }, /* %s */" % (type_, code, enum)
+ print """\
+ },
+};"""
+
+ output_domain(reverse["OF1.0"], "ofperr_of10", "OpenFlow 1.0", 0x01)
+ output_domain(reverse["OF1.1"], "ofperr_of11", "OpenFlow 1.1", 0x02)
if __name__ == '__main__':
if '--help' in sys.argv:
projects / cascardo / ovs.git / blobdiff