import builtins
import keyword
import re
import time
from idlelib.config import idleConf
from idlelib.delegator import Delegator
DEBUG = False
def any(name, alternates):
"Return a named group pattern matching list of alternates."
return "(?P<%s>" % name + "|".join(alternates) + ")"
def make_pat():
kw = r"\b" + any("KEYWORD", keyword.kwlist + ['async', 'await']) + r"\b"
builtinlist = [str(name) for name in dir(builtins)
if not name.startswith('_') and \
name not in keyword.kwlist]
builtin = r"([^.'\"\\#]\b|^)" + any("BUILTIN", builtinlist) + r"\b"
comment = any("COMMENT", [r"#[^\n]*"])
stringprefix = r"(?i:r|u|f|fr|rf|b|br|rb)?"
sqstring = stringprefix + r"'[^'\\\n]*(\\.[^'\\\n]*)*'?"
dqstring = stringprefix + r'"[^"\\\n]*(\\.[^"\\\n]*)*"?'
sq3string = stringprefix + r"'''[^'\\]*((\\.|'(?!''))[^'\\]*)*(''')?"
dq3string = stringprefix + r'"""[^"\\]*((\\.|"(?!""))[^"\\]*)*(""")?'
string = any("STRING", [sq3string, dq3string, sqstring, dqstring])
return kw + "|" + builtin + "|" + comment + "|" + string +\
"|" + any("SYNC", [r"\n"])
prog = re.compile(make_pat(), re.S)
idprog = re.compile(r"\s+(\w+)", re.S)
def color_config(text):
"""Set color options of Text widget.
If ColorDelegator is used, this should be called first.
"""
# Called from htest, TextFrame, Editor, and Turtledemo.
# Not automatic because ColorDelegator does not know 'text'.
theme = idleConf.CurrentTheme()
normal_colors = idleConf.GetHighlight(theme, 'normal')
cursor_color = idleConf.GetHighlight(theme, 'cursor', fgBg='fg')
select_colors = idleConf.GetHighlight(theme, 'hilite')
text.config(
foreground=normal_colors['foreground'],
background=normal_colors['background'],
insertbackground=cursor_color,
selectforeground=select_colors['foreground'],
selectbackground=select_colors['background'],
inactiveselectbackground=select_colors['background'], # new in 8.5
)
class ColorDelegator(Delegator):
def __init__(self):
Delegator.__init__(self)
self.prog = prog
self.idprog = idprog
self.LoadTagDefs()
def setdelegate(self, delegate):
if self.delegate is not None:
self.unbind("<<toggle-auto-coloring>>")
Delegator.setdelegate(self, delegate)
if delegate is not None:
self.config_colors()
self.bind("<<toggle-auto-coloring>>", self.toggle_colorize_event)
self.notify_range("1.0", "end")
else:
# No delegate - stop any colorizing
self.stop_colorizing = True
self.allow_colorizing = False
def config_colors(self):
for tag, cnf in self.tagdefs.items():
if cnf:
self.tag_configure(tag, **cnf)
self.tag_raise('sel')
def LoadTagDefs(self):
theme = idleConf.CurrentTheme()
self.tagdefs = {
"COMMENT": idleConf.GetHighlight(theme, "comment"),
"KEYWORD": idleConf.GetHighlight(theme, "keyword"),
"BUILTIN": idleConf.GetHighlight(theme, "builtin"),
"STRING": idleConf.GetHighlight(theme, "string"),
"DEFINITION": idleConf.GetHighlight(theme, "definition"),
"SYNC": {'background':None,'foreground':None},
"TODO": {'background':None,'foreground':None},
"ERROR": idleConf.GetHighlight(theme, "error"),
# The following is used by ReplaceDialog:
"hit": idleConf.GetHighlight(theme, "hit"),
}
if DEBUG: print('tagdefs',self.tagdefs)
def insert(self, index, chars, tags=None):
index = self.index(index)
self.delegate.insert(index, chars, tags)
self.notify_range(index, index + "+%dc" % len(chars))
def delete(self, index1, index2=None):
index1 = self.index(index1)
self.delegate.delete(index1, index2)
self.notify_range(index1)
after_id = None
allow_colorizing = True
colorizing = False
def notify_range(self, index1, index2=None):
self.tag_add("TODO", index1, index2)
if self.after_id:
if DEBUG: print("colorizing already scheduled")
return
if self.colorizing:
self.stop_colorizing = True
if DEBUG: print("stop colorizing")
if self.allow_colorizing:
if DEBUG: print("schedule colorizing")
self.after_id = self.after(1, self.recolorize)
close_when_done = None # Window to be closed when done colorizing
def close(self, close_when_done=None):
if self.after_id:
after_id = self.after_id
self.after_id = None
if DEBUG: print("cancel scheduled recolorizer")
self.after_cancel(after_id)
self.allow_colorizing = False
self.stop_colorizing = True
if close_when_done:
if not self.colorizing:
close_when_done.destroy()
else:
self.close_when_done = close_when_done
def toggle_colorize_event(self, event):
if self.after_id:
after_id = self.after_id
self.after_id = None
if DEBUG: print("cancel scheduled recolorizer")
self.after_cancel(after_id)
if self.allow_colorizing and self.colorizing:
if DEBUG: print("stop colorizing")
self.stop_colorizing = True
self.allow_colorizing = not self.allow_colorizing
if self.allow_colorizing and not self.colorizing:
self.after_id = self.after(1, self.recolorize)
if DEBUG:
print("auto colorizing turned",\
self.allow_colorizing and "on" or "off")
return "break"
def recolorize(self):
self.after_id = None
if not self.delegate:
if DEBUG: print("no delegate")
return
if not self.allow_colorizing:
if DEBUG: print("auto colorizing is off")
return
if self.colorizing:
if DEBUG: print("already colorizing")
return
try:
self.stop_colorizing = False
self.colorizing = True
if DEBUG: print("colorizing...")
t0 = time.perf_counter()
self.recolorize_main()
t1 = time.perf_counter()
if DEBUG: print("%.3f seconds" % (t1-t0))
finally:
self.colorizing = False
if self.allow_colorizing and self.tag_nextrange("TODO", "1.0"):
if DEBUG: print("reschedule colorizing")
self.after_id = self.after(1, self.recolorize)
if self.close_when_done:
top = self.close_when_done
self.close_when_done = None
top.destroy()
def recolorize_main(self):
next = "1.0"
while True:
item = self.tag_nextrange("TODO", next)
if not item:
break
head, tail = item
self.tag_remove("SYNC", head, tail)
item = self.tag_prevrange("SYNC", head)
if item:
head = item[1]
else:
head = "1.0"
chars = ""
next = head
lines_to_get = 1
ok = False
while not ok:
mark = next
next = self.index(mark + "+%d lines linestart" %
lines_to_get)
lines_to_get = min(lines_to_get * 2, 100)
ok = "SYNC" in self.tag_names(next + "-1c")
line = self.get(mark, next)
##print head, "get", mark, next, "->", repr(line)
if not line:
return
for tag in self.tagdefs:
self.tag_remove(tag, mark, next)
chars = chars + line
m = self.prog.search(chars)
while m:
for key, value in m.groupdict().items():
if value:
a, b = m.span(key)
self.tag_add(key,
head + "+%dc" % a,
head + "+%dc" % b)
if value in ("def", "class"):
m1 = self.idprog.match(chars, b)
if m1:
a, b = m1.span(1)
self.tag_add("DEFINITION",
head + "+%dc" % a,
head + "+%dc" % b)
m = self.prog.search(chars, m.end())
if "SYNC" in self.tag_names(next + "-1c"):
head = next
chars = ""
else:
ok = False
if not ok:
# We're in an inconsistent state, and the call to
# update may tell us to stop. It may also change
# the correct value for "next" (since this is a
# line.col string, not a true mark). So leave a
# crumb telling the next invocation to resume here
# in case update tells us to leave.
self.tag_add("TODO", next)
self.update()
if self.stop_colorizing:
if DEBUG: print("colorizing stopped")
return
def removecolors(self):
for tag in self.tagdefs:
self.tag_remove(tag, "1.0", "end")
def _color_delegator(parent): # htest #
from tkinter import Toplevel, Text
from idlelib.percolator import Percolator
top = Toplevel(parent)
top.title("Test ColorDelegator")
x, y = map(int, parent.geometry().split('+')[1:])
top.geometry("700x250+%d+%d" % (x + 20, y + 175))
source = (
"if True: int ('1') # keyword, builtin, string, comment\n"
"elif False: print(0)\n"
"else: float(None)\n"
"if iF + If + IF: 'keyword matching must respect case'\n"
"if'': x or'' # valid string-keyword no-space combinations\n"
"async def f(): await g()\n"
"# All valid prefixes for unicode and byte strings should be colored.\n"
"'x', '''x''', \"x\", \"\"\"x\"\"\"\n"
"r'x', u'x', R'x', U'x', f'x', F'x'\n"
"fr'x', Fr'x', fR'x', FR'x', rf'x', rF'x', Rf'x', RF'x'\n"
"b'x',B'x', br'x',Br'x',bR'x',BR'x', rb'x'.rB'x',Rb'x',RB'x'\n"
"# Invalid combinations of legal characters should be half colored.\n"
"ur'x', ru'x', uf'x', fu'x', UR'x', ufr'x', rfu'x', xf'x', fx'x'\n"
)
text = Text(top, background="white")
text.pack(expand=1, fill="both")
text.insert("insert", source)
text.focus_set()
color_config(text)
p = Percolator(text)
d = ColorDelegator()
p.insertfilter(d)
if __name__ == "__main__":
from unittest import main
main('idlelib.idle_test.test_colorizer', verbosity=2, exit=False)
from idlelib.idle_test.htest import run
run(_color_delegator)
