def coupleBalance(self, stc, ln, open, close):
"""Search the line to see if there are unmatched braces
Search the line for unmatched braces given the open and close matching
pair. This takes into account the style of the document to make sure
that the brace isn't in a comment or string.
@param stc: the StyledTextCtrl instance
@param ln: line number
@param open: the opening brace character, e.g. "("
@param close: the complimentary closing brace character, e.g. ")"
@return: brace mismatch count: 0 for matching braces, positive for a
surplus of opening braces, and negative for a surplus of closing braces
"""
if ln < 0:
return 0
r = 0
fc = stc.GetLineIndentPosition(ln)
lc = stc.GetLineEndPosition(ln)
line = stc.GetStyledText(fc, lc)
self.dprint(repr(line))
i = len(line)
while i > 0:
i -= 1
s = line[i]
i -= 1
c = line[i]
if c == open and not (stc.isStyleComment(s) and stc.isStyleString(s)):
self.dprint("found %s at column %d" % (open, i/2))
r += 1
elif c == close and not (stc.isStyleComment(s) and stc.isStyleString(s)):
self.dprint("found %s at column %d" % (close, i/2))
r -= 1
return r
def electricChar(self, stc, uchar):
"""Reindent the line and insert a newline when special chars are typed.
For python mode, a colon should reindent the line (for example, after
an else statement, it should dedent it one level)
"""
if uchar == u':':
pos = stc.GetCurrentPos()
s = stc.GetStyleAt(pos)
if stc.isStyleComment(s) or stc.isStyleString(s):
# These will report true if the cursor is before the first
# character of a comment or string, meaning that:
#
# else#blah
#
# where the cursor is between the 'e' and the '#' will fail.
# So, we have to check for this as a special case and allow it
if pos > 0:
s = stc.GetStyleAt(pos-1)
allow = not stc.isStyleComment(s) and not stc.isStyleString(s)
else:
allow = False
else:
allow = True
if allow:
stc.BeginUndoAction()
start, end = stc.GetSelection()
if start == end:
stc.AddText(uchar)
else:
stc.ReplaceSelection(uchar)
self.reindentLine(stc, dedent_only=True)
stc.EndUndoAction()
return True
return False
def electricBackspace(self, stc):
"""Delete all whitespace before the cursor unless in a string or comment
"""
start, end = stc.GetSelection()
if start != end:
stc.ReplaceSelection("")
return
pos = stc.GetCurrentPos()
if pos <= 0:
return
s = stc.GetStyleAt(pos - 1)
if stc.isStyleComment(s) or stc.isStyleString(s):
stc.CmdKeyExecute(wx.stc.STC_CMD_DELETEBACK)
else:
self.dprint("backspace from pos %d" % pos)
start = pos
while start > 0:
c = stc.GetCharAt(start - 1)
if c == ord(' ') or c == ord('\t') or c == 10 or c == 13:
start -= 1
else:
break
if start < pos:
stc.SetTargetStart(start)
stc.SetTargetEnd(pos)
stc.ReplaceTarget('')
else:
stc.CmdKeyExecute(wx.stc.STC_CMD_DELETEBACK)
def electricDelete(self, stc):
"""Delete all whitespace after the cursor unless in a string or comment
"""
start, end = stc.GetSelection()
if start != end:
stc.ReplaceSelection("")
return
pos = stc.GetCurrentPos()
s = stc.GetStyleAt(pos)
if stc.isStyleComment(s) or stc.isStyleString(s):
stc.CmdKeyExecute(wx.stc.STC_CMD_CLEAR)
else:
self.dprint("deleting from pos %d" % pos)
end = pos
while end < stc.GetLength():
c = stc.GetCharAt(end)
if c == ord(' ') or c == ord('\t') or c == 10 or c == 13:
end += 1
else:
break
if end > pos:
stc.SetTargetStart(pos)
stc.SetTargetEnd(end)
stc.ReplaceTarget('')
else:
stc.CmdKeyExecute(wx.stc.STC_CMD_CLEAR)
def electricChar(self, stc, uchar):
"""Reindent the line and insert a newline when special chars are typed.
Like emacs, a semicolon or curly brace causes the line to be reindented
and the next line to be indented to the correct column.
@param stc: stc instance
@param uchar: unicode character that was just typed by the user (note
that it hasn't been inserted into the document yet.)
@return: True if this method handled the character and the text
was modified; False if the calling event handler should handle the
character.
"""
implicit_return = True
if uchar == u';' or uchar == u':' or uchar == '{' or uchar == '}':
pos = stc.GetCurrentPos()
s = stc.GetStyleAt(pos)
if not stc.isStyleComment(s) and not stc.isStyleString(s):
if uchar == u':':
# FIXME: currently only process the : if the current
# line is a case statement. Emacs also indents labels
# and namespace operators with a :: by checking if the
# last character on the previous line is a : and if so
# collapses the current line with the previous line and
# reindents the new line
linenum = stc.GetCurrentLine()
line = self.getCodeChars(stc, linenum, pos) + ":"
if not self.reCase.match(line) and not self.reClassAttrScope.match(line):
c, prev = self.getLastNonWhitespaceChar(stc, pos)
if c == u':':
# Found previous ':', so make it a double colon
stc.SetSelection(prev + 1, pos)
#dprint("selection: %d - %d" % (prev + 1, pos))
implicit_return = False
elif uchar == u';':
# Don't process the semicolon if we're in the middle of an
# open statement
if self.isInsideStatement(stc, pos):
return False
stc.BeginUndoAction()
start, end = stc.GetSelection()
if start == end:
stc.AddText(uchar)
else:
stc.ReplaceSelection(uchar)
# Always reindent the line, but only process a return if needed
self.processTab(stc)
if implicit_return:
self.processReturn(stc)
stc.EndUndoAction()
return True
return False
def electricChar(self, stc, uchar):
"""Reindent the line and insert a newline when special chars are typed.
For python mode, a colon should reindent the line (for example, after
an else statement, it should dedent it one level)
"""
if uchar == u':':
pos = stc.GetCurrentPos()
s = stc.GetStyleAt(pos)
if stc.isStyleComment(s) or stc.isStyleString(s):
# These will report true if the cursor is before the first
# character of a comment or string, meaning that:
#
# else#blah
#
# where the cursor is between the 'e' and the '#' will fail.
# So, we have to check for this as a special case and allow it
if pos > 0:
s = stc.GetStyleAt(pos - 1)
allow = not stc.isStyleComment(
s) and not stc.isStyleString(s)
else:
allow = False
else:
allow = True
if allow:
stc.BeginUndoAction()
start, end = stc.GetSelection()
if start == end:
stc.AddText(uchar)
else:
stc.ReplaceSelection(uchar)
self.reindentLine(stc, dedent_only=True)
stc.EndUndoAction()
return True
return False
