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"""A utility class for a code container.
A code container is a class which holds source code for a debugger. It knows how
to color the text, and also how to translate lines into offsets, and back.
"""
import sys
import tokenize
import win32api
import winerror
from win32com.axdebug import axdebug
from win32com.server.exception import Exception
from . import contexts
from .util import RaiseNotImpl, _wrap
_keywords = {} # set of Python keywords
for name in """
and assert break class continue def del elif else except exec
finally for from global if import in is lambda not
or pass print raise return try while
""".split():
_keywords[name] = 1
class SourceCodeContainer:
def __init__(
self,
text,
fileName="<Remove Me!>",
sourceContext=0,
startLineNumber=0,
site=None,
debugDocument=None,
):
self.sourceContext = sourceContext # The source context added by a smart host.
self.text = text
if text:
self._buildlines()
self.nextLineNo = 0
self.fileName = fileName
self.codeContexts = {}
self.site = site
self.startLineNumber = startLineNumber
self.debugDocument = None
def _Close(self):
self.text = self.lines = self.lineOffsets = None
self.codeContexts = None
self.debugDocument = None
self.site = None
self.sourceContext = None
def GetText(self):
return self.text
def GetName(self, dnt):
assert 0, "You must subclass this"
def GetFileName(self):
return self.fileName
def GetPositionOfLine(self, cLineNumber):
self.GetText() # Prime us.
try:
return self.lineOffsets[cLineNumber]
except IndexError:
raise Exception(scode=winerror.S_FALSE)
def GetLineOfPosition(self, charPos):
self.GetText() # Prime us.
lastOffset = 0
lineNo = 0
for lineOffset in self.lineOffsets[1:]:
if lineOffset > charPos:
break
lastOffset = lineOffset
lineNo = lineNo + 1
else: # for not broken.
# print "Cant find", charPos, "in", self.lineOffsets
raise Exception(scode=winerror.S_FALSE)
# print "GLOP ret=",lineNo, (charPos-lastOffset)
return lineNo, (charPos - lastOffset)
def GetNextLine(self):
if self.nextLineNo >= len(self.lines):
self.nextLineNo = 0 # auto-reset.
return ""
rc = self.lines[self.nextLineNo]
self.nextLineNo = self.nextLineNo + 1
return rc
def GetLine(self, num):
self.GetText() # Prime us.
return self.lines[num]
def GetNumChars(self):
return len(self.GetText())
def GetNumLines(self):
self.GetText() # Prime us.
return len(self.lines)
def _buildline(self, pos):
i = self.text.find("\n", pos)
if i < 0:
newpos = len(self.text)
else:
newpos = i + 1
r = self.text[pos:newpos]
return r, newpos
def _buildlines(self):
self.lines = []
self.lineOffsets = [0]
line, pos = self._buildline(0)
while line:
self.lines.append(line)
self.lineOffsets.append(pos)
line, pos = self._buildline(pos)
def _ProcessToken(self, type, token, spos, epos, line):
srow, scol = spos
erow, ecol = epos
self.GetText() # Prime us.
linenum = srow - 1 # Lines zero based for us too.
realCharPos = self.lineOffsets[linenum] + scol
numskipped = realCharPos - self.lastPos
if numskipped == 0:
pass
elif numskipped == 1:
self.attrs.append(axdebug.SOURCETEXT_ATTR_COMMENT)
else:
self.attrs.append((axdebug.SOURCETEXT_ATTR_COMMENT, numskipped))
kwSize = len(token)
self.lastPos = realCharPos + kwSize
attr = 0
if type == tokenize.NAME:
if token in _keywords:
attr = axdebug.SOURCETEXT_ATTR_KEYWORD
elif type == tokenize.STRING:
attr = axdebug.SOURCETEXT_ATTR_STRING
elif type == tokenize.NUMBER:
attr = axdebug.SOURCETEXT_ATTR_NUMBER
elif type == tokenize.OP:
attr = axdebug.SOURCETEXT_ATTR_OPERATOR
elif type == tokenize.COMMENT:
attr = axdebug.SOURCETEXT_ATTR_COMMENT
# else attr remains zero...
if kwSize == 0:
pass
elif kwSize == 1:
self.attrs.append(attr)
else:
self.attrs.append((attr, kwSize))
def GetSyntaxColorAttributes(self):
self.lastPos = 0
self.attrs = []
try:
tokenize.tokenize(self.GetNextLine, self._ProcessToken)
except tokenize.TokenError:
pass # Ignore - will cause all subsequent text to be commented.
numAtEnd = len(self.GetText()) - self.lastPos
if numAtEnd:
self.attrs.append((axdebug.SOURCETEXT_ATTR_COMMENT, numAtEnd))
return self.attrs
# We also provide and manage DebugDocumentContext objects
def _MakeDebugCodeContext(self, lineNo, charPos, len):
return _wrap(
contexts.DebugCodeContext(lineNo, charPos, len, self, self.site),
axdebug.IID_IDebugCodeContext,
)
# Make a context at the given position. It should take up the entire context.
def _MakeContextAtPosition(self, charPos):
lineNo, offset = self.GetLineOfPosition(charPos)
try:
endPos = self.GetPositionOfLine(lineNo + 1)
except:
endPos = charPos
codecontext = self._MakeDebugCodeContext(lineNo, charPos, endPos - charPos)
return codecontext
# Returns a DebugCodeContext. debugDocument can be None for smart hosts.
def GetCodeContextAtPosition(self, charPos):
# trace("GetContextOfPos", charPos, maxChars)
# Convert to line number.
lineNo, offset = self.GetLineOfPosition(charPos)
charPos = self.GetPositionOfLine(lineNo)
try:
cc = self.codeContexts[charPos]
# trace(" GetContextOfPos using existing")
except KeyError:
cc = self._MakeContextAtPosition(charPos)
self.codeContexts[charPos] = cc
return cc
class SourceModuleContainer(SourceCodeContainer):
def __init__(self, module):
self.module = module
if hasattr(module, "__file__"):
fname = self.module.__file__
# Check for .pyc or .pyo or even .pys!
if fname[-1] in ["O", "o", "C", "c", "S", "s"]:
fname = fname[:-1]
try:
fname = win32api.GetFullPathName(fname)
except win32api.error:
pass
else:
if module.__name__ == "__main__" and len(sys.argv) > 0:
fname = sys.argv[0]
else:
fname = "<Unknown!>"
SourceCodeContainer.__init__(self, None, fname)
def GetText(self):
if self.text is None:
fname = self.GetFileName()
if fname:
try:
self.text = open(fname, "r").read()
except IOError as details:
self.text = "# Exception opening file\n# %s" % (repr(details))
else:
self.text = "# No file available for module '%s'" % (self.module)
self._buildlines()
return self.text
def GetName(self, dnt):
name = self.module.__name__
try:
fname = win32api.GetFullPathName(self.module.__file__)
except win32api.error:
fname = self.module.__file__
except AttributeError:
fname = name
if dnt == axdebug.DOCUMENTNAMETYPE_APPNODE:
return name.split(".")[-1]
elif dnt == axdebug.DOCUMENTNAMETYPE_TITLE:
return fname
elif dnt == axdebug.DOCUMENTNAMETYPE_FILE_TAIL:
return os.path.split(fname)[1]
elif dnt == axdebug.DOCUMENTNAMETYPE_URL:
return "file:%s" % fname
else:
raise Exception(scode=winerror.E_UNEXPECTED)
if __name__ == "__main__":
import sys
sys.path.append(".")
import ttest
sc = SourceModuleContainer(ttest)
# sc = SourceCodeContainer(open(sys.argv[1], "rb").read(), sys.argv[1])
attrs = sc.GetSyntaxColorAttributes()
attrlen = 0
for attr in attrs:
if type(attr) == type(()):
attrlen = attrlen + attr[1]
else:
attrlen = attrlen + 1
text = sc.GetText()
if attrlen != len(text):
print("Lengths dont match!!! (%d/%d)" % (attrlen, len(text)))
# print "Attributes:"
# print attrs
print("GetLineOfPos=", sc.GetLineOfPosition(0))
print("GetLineOfPos=", sc.GetLineOfPosition(4))
print("GetLineOfPos=", sc.GetLineOfPosition(10))