def isstatic(line):
if line is None: return FALSE
if len(line) < 10: return FALSE # min is "static int"
words = wstring.split(line, " \t\r\n*;[](){}?:,", "*")
i = 0
if string.lower(words[0]) == "extern": i = i + 1
return string.lower(words[i]) == "static"
def openstruct(line):
if line is None: return FALSE
line = removecomment(line)
if len(line) == 0: return FALSE
temp = string.lower(line)
words = wstring.split(temp, " \t\r\n")
if len(words) < 2: return FALSE # 2 tokens or 1 token and 1 ident
first = string.lower(words[0])
second = string.lower(words[1])
if first in ["typedef"]: return FALSE
if first in ["struct", "enum"]: return TRUE
"""
if first in ["extern"]:
if second not in [ "struct"] : return FALSE
# following code keep instances of struct inside classes
# but I have decided to put them oustide classes along with decl.
if ';' in temp:
if not '{' in temp: return FALSE
if not '}' in temp: return FALSE
k = string.rfind(temp, '}')
if i < k: return FALSE
return TRUE
"""
return FALSE
def gettypeident(decl):
l = wstring.split(decl, " *;", "*")
t = []
n = ""
for w in l:
if w in types: t.append(w)
else: n = w
#print "gettypeident", decl, l,"type", t, "name=", n
return t, n
def lastword(line): words = wstring.split(line, symstr) #print "lastword in", words l = len(words) if l < 1: return None last = words[l -1] #print "is ident?", last if not isident(last): return None return last
def typename(line): i = string.rfind(line, '}') if i == -1: i = 0; words = wstring.split(line[i:], " };*", "*") l = len(words) if l == 0: return None last = words[l - 1] if last in types: return None return last
def islocalvar(line):
#print "isvardef", line
if line is None: return FALSE
line = removecomment(line)
if len(line) < 6: return FALSE # Minimum is int a;
if line[0] == "#": return FALSE # Define statement
# I keep separators for further tests and * that is a keyword
words = wstring.split(line, vardelimiters, '*,;[]()=')
if len(words) < 3: return FALSE
# extern declaration not concerned, * require a type before
if words[0] in [ "extern", "*" ]: return FALSE
# modifier concern either a var or a function
if words[0] in modifiers : return TRUE
if structinstance(words): return TRUE
if linestruct(line): return TRUE
if words[0] in predefined:
words.remove(words[0])
if words[0] == '*':
words.remove('*')
else:
# skipping all type keywords
if words[0] not in types: return FALSE
while words[0] in types:
words.remove(words[0])
if len(words) == 0: return FALSE
# Unknown statement, requires at last: ident and delimiter
if len(words) < 2: return FALSE
if not isident(words[0]): return FALSE
second = words[1]
if second == ';': return TRUE # End of declaration
if second == ',': return TRUE # Multiple declarations
if second == '[': return TRUE # Array
if second == '=': return TRUE # Assignent
if second == '(': return FALSE # Function
if isident(second):
print words[0], "is a type defined by the programmer"
return TRUE
if second in [ '*', 'huge', 'far', 'near']:
try:
if isident(words[2]):
return TRUE
except:
pass
print "What is \"" + second + "\" ->", line + '?'
return FALSE
def typeonly(line): # Removing any embedded or trailing comment while commentfound(line): line = nocomment(line) if len(line) < 3: return FALSE # Minimum is: int words = wstring.split(line, " \t\r\n*;", "*;") # * is a word if len(words) < 1: return FALSE if words[0] == "extern": return FALSE for w in words: if w not in types: return FALSE return TRUE
def multivar(line):
line = removecomment(line)
line = wstring.strip(line)
#print "in multivar", line
l = wstring.split(line, ",;")
#print "result=", len(l)
if len(l) > 1: return TRUE
if ',' in line:
print "Error in multi-declaration, string", line
sys.exit(0)
return FALSE
def right(dec):
i = string.find(dec, "(")
j = string.find(dec, ")")
right = dec[i+1:j]
w = wstring.split(right, " ,\t*", '*')
# I keep only the types in the list of words
pw = []
for n in w:
if n in reserved: pw.append(n) # word in list of types
return pw
def getident(line): line = removecomment(line) l = wstring.split(line, symstr, '*') # * is both delimiter and keyword in C #print "getident", line, l for w in l: wi = string.lower(w) if wi == "typedef": continue if w in types: continue # Skipping type keywords if isident(w): return w # Identifier returned return None # Anything else is not of concern return None
def getvarnames(line):
vlist = []
l = wstring.split(line, " *;,\t\r\n", '*')
for w in l:
i = string.find(w, '[')
if i != -1:
w = w[:i]
w = wstring.strip(w)
if w in types: continue
if isident(w): vlist.append(w)
return vlist
def structname(line):
line = removecomment(line)
words = wstring.split(line, " {;")
if len(words) < 2: return None
first = string.lower(words[0])
second = string.lower(words[1])
if first == "extern":
if len(words) < 3: return None
first = second
second = string.lower(words[2])
if first == "struct": return second
return None
def splitvardef(str):
# split into strings separated by "," or ";" and remove trailing ";"
# when curly braces openned, a flag is set and separators ignored
# until curly braces closed
str = removecomment(str)
#print str
words = []
newword = ""
flag = FALSE
str = wstring.strip(str) # Remove spaces
for c in str:
if (c in ",;") & (flag == FALSE): # char in delimiter list
if newword != "": words.append(newword) # then word ended, add it
newword = "" # clear it
else: # else char in a word
newword = newword + c # add char to word
if c == '{': flag = TRUE
if c == '}': flag = FALSE
# End of string, either a word or a delimiter sequence remains here
if newword != "": words.append(newword)
# get types from the first string and remove it from the list
first = words[0]
words.remove(first)
tlist = wstring.split(first, " \t*=", "*=")
#print tlist
flag = FALSE
commontype = ""
idfound = ""
# get type keywords
for v in tlist:
if v == "=": break # right part of an assignment is ignored here
if v in types:
if flag == FALSE:
commontype = commontype + v + ' '
continue
print "Error, keyword \'" + v + "\' follows ident \'" + idfound + "\' in", str
sys.exit(0)
flag = TRUE
idfound = v
newlist = [] # list of separated vars
newlist.append(addsemicolon(first)) # first string unchanged
for n in words:
if not isdeclaration(n):
n = commontype + n
newlist.append(n + ';') # add type to each other
return newlist
def vartypelist(line): while commentfound(line): line = nocomment(line) words = wstring.split(line, " \t*;[", '*') t = [] # Adding all type keyword but "extern" # exiting when encountering the variable's name for w in words: if w in types: if w != "extern": t.append(w) else: break return t
def typedefstruct(line): if line is None: return FALSE line = removecomment(line) if len(line) == 0: return FALSE temp = string.lower(line) words = wstring.split(temp, " \t\r\n") if len(words) < 2: return FALSE # 2 tokens or 1 token and 1 ident first = string.lower(words[0]) second = string.lower(words[1]) if first not in ["typedef"]: return FALSE if second not in ["struct", "enum"]: return FALSE return TRUE
def getargs(line):
i = string.find(line, '(')
j = string.find(line, ')')
if i == -1: return None, 0,0
if j <= i: return None, 0 ,0
line = line[i + 1: j] # Keeping arguments
if line == None: return None, 0, 0
alist = wstring.split(line, ',')
#print "getargs", arglist
arglist = []
for w in alist:
arglist.append(wstring.strip(w))
return arglist, i, j
def istypstruct(line):
words = wstring.split(line, vardelimiters, "*")
for w in words:
if w in typstruct:
#print "istypstruct - ", w, "in typedef struct"
return TRUE
if w in types:
#print w, "in type"
continue
if isident(w):
#print w, "in ident"
return FALSE
break
return FALSE
def isfunction(line):
global shortened
if line is None: return FALSE
# Is the line blank or too short?
# The shortest seems to be a(), 3 characters long
if len(line) < 3: return FALSE
# Removing any embedded or trailing comment
line = removecomment(line)
if len(line) < 3: return FALSE # test again
if line[0] == "#": return FALSE
# Removing any block of statements
i = string.find(line, "{")
if i >= 0: line = line[:i]
# test again
if len(line) < 3: return FALSE
# Is the last character a ; or a : ?
if line[-1] == ";": return FALSE
if line[-1] == ':': return FALSE
# This code must be found
if string.find(line, '(') == -1: return FALSE
# Is the line splitted? Not handled here
if line[-1] == "\\": return FALSE
# Is the line starting a construct?
w = wstring.split(line, " (")
first = w[0]
if first in constructs: return FALSE
# Anything else starts a function definition
# Is the return type missing? Add the default "int" type
newreturn = "int "
if first in reserved: newreturn = "" # Add nothing
shortened = newreturn + line
#print "function >", line
return TRUE
def isdefinition(line):
if line == None: return FALSE
line = wstring.strip(line)
le = len(line)
if le < 3: return FALSE # minimum length: f()
# I get the left part
j = 0
for c in line:
if c in [ '(', '[', ';', '=', ',' ]: break
j = j + 1
# function name without type not a call (terminated by semicolon)
soleident = ((c == '(') & (line[-1:] != ';'))
#print "solident", line, soleident, line[-1:]
le = min(le, j)
# Analysing the left part of the line
line = line[:le]
if line == "": return FALSE
words = wstring.split(line, " *", '*')
if len(words) == 0: return FALSE
if len(words) == 1:
if isident(words[0]):
return soleident # True is a identifier followed by (
#print "words >>>", words
# Handling case of the *ident= assignment inside block
if words[0] == '*': return FALSE
tflag = FALSE
iflag = FALSE
for w in words:
if w == "extern": return FALSE # External declarations are ignored
if w in declarator:
#print "type", w
if iflag: return FALSE # Type following ident?
tflag = TRUE
continue # Continue to next word...
if isident(w):
#print "ident", w
iflag = TRUE # Must be the last word
continue
return FALSE # Neither type nor identifier
#print "ok", line
return tflag # Found a type followed or not by an identifier then (=;,[
def isvardecl(line): if line is None: return FALSE if len(line) < 4: return FALSE # Minimum is "t a;" if t is a typedef line = wstring.strip(line) if line[0] == '#': return FALSE if isprototype(line): return FALSE # some delimiters are kept in the list of words words = wstring.split(line, vardelimiters , ";,()*[]") #print "(isvardecl word in type?)", words[0] if len(words) < 3: return FALSE if words[0] in modifiers: return TRUE if words[0] in types: return TRUE if words[0] in predefined: return TRUE return FALSE
def isarray(line):
words = wstring.split(line, " \r\t\n*()[];{}=", "*[]();{}=")
if len(words) == 0: return FALSE
if words[0] not in types: return FALSE
while len(words) > 0:
if words[0] in types:
words.remove(words[0])
continue
break
if len(words) == 0: return FALSE
if not isident(words[0]): return FALSE
words.remove(words[0])
if len(words) == 0: return FALSE
if words[0] != '[': return FALSE
return TRUE
def isdeclaration(line):
if line is None: return FALSE
if len(line) < 6: return FALSE # min is "int a;"
words = wstring.split(line, " \t\r\n*;[](){}?:,", "*")
if words[0] == "extern":
words.remove(words[0])
first = words[0]
if first == "*": return FALSE # no valid as first keyword
if first not in types: return FALSE # no typed
# first being a type keyword, then scanning the line
for w in words:
if w in types: continue
if isident(w): return TRUE
return FALSE
return TRUE
def recordinstance(line):
line = removecomment(line)
if line is None: return FALSE
if len(line) < 18: return FALSE # Minimum is "extern struct s a;"
line = wstring.strip(line)
if line[0] == '#': return FALSE
words = wstring.split(line, symstr)
if len(words) < 2: return FALSE
first = string.lower(words[0])
second = string.lower(words[0])
if first == "enum": return TRUE
if first != "extern" : return FALSE
if second != "struct": return FALSE
if ';' not in line: return FALSE
if '{' in line:
i = string.find(line, ';')
j = string.find(line, '{')
if j < i: return FALSE
return TRUE
def isprototype(line):
global prototype
prototype = ""
if line is None: return FALSE
# Removing any embedded or trailing comment
line = removecomment(line)
# Is the line blank or too short?
# The shortest seems to be a(), 3 characters long
if len(line) < 3: return FALSE
# Is the line a # statement?
if line[0] == "#": return FALSE
# Removing any block of statements
i = string.find(line, "{")
if i >= 0: line = line[:i]
# Is the reduced string too short for a declaration?
if len(line) < 3: return FALSE
# Irrelevant
if '=' in line: return FALSE
# These codes must be found
if '(' not in line : return FALSE
if ')' not in line: return FALSE
prototype = line
# Is the line starting a struct?
w = wstring.split(line, " (")
if w[0] in ['typedef', 'struct', "union" ]: return FALSE
# A function declaration or a prototype?
line = wstring.strip(line)
if line[-1] == ';': return TRUE
return FALSE
def isvardef(line): #print "928 isvardef", line if line is None: return FALSE line = removecomment(line) if len(line) < 6: return FALSE # Minimum is int a; if line[0] == "#": return FALSE # Define statement if isfunction(line): #print "function >>>", line return FALSE #print "var >>>", line # I keep * that is a type keyword words = wstring.split(line, vardelimiters, '*;[') if len(words) < 3: return FALSE #print "words[0]", words[0] if words[0] in modifiers: return TRUE if words[0] in predefined: return TRUE if words[0] in types: return TRUE if structinstance(words): return TRUE return FALSE
def isextern(line):
if line is None: return FALSE
if len(line) < 6: return FALSE # min is "int a;"
words = wstring.split(line, " \t\r\n*;[](){}?:,", "*")
return string.lower(words[0]) == "extern";
def typeident(line):
i = string.find(line, "(")
words = wstring.split(line[:i], " \t*", "*")
return words[len(words) - 1]
def left(line):
i = string.find(line, "(")
w = wstring.split(line[:i], " \t*", "*")
return w
