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# This file is responsible for displaying code examples. It expects to see
# comments like #begin foo and #end foo a the start of lines. The code is
# then used to create example fragments.
#
# When we see:
#
# show example foo bar
#
# We concatenate fragements foo and bar, higlight them, wrap them into a
# viewport, button and transform, and display them to the user.
transform example_transform:
ypos 450 yanchor 1.0 xpos 0 xanchor 0
on replace:
crop (0, 0, 800, 120)
on show:
crop (0, 0, 800, 0)
linear .5 crop (0, 0, 800, 120)
on hide:
linear .5 crop (0, 0, 800, 0)
init python:
import re
KEYWORDS = """\
and
as
assert
break
class
continue
def
elif
else
except
exec
finally
for
from
global
if
import
in
is
lambda
not
or
pass
print
raise
return
try
while
with
yield
at
behind
call
expression
hide
image
init
jump
label
menu
onlayer
python
scene
set
show
play
queue
stop
sound
music
fadeout
fadein
loop
noloop
if_changed
voice
sustain
nvl
clear
window
pause
define
transform
"""
KEYWORDS = [ i.strip() for i in KEYWORDS.split() ]
KWREGEX = r"|".join(KEYWORDS)
regex = r"(?P<keyword>\b(" + KWREGEX + r")\b)|(?P<string>\"([^\"]|\\.)*\")|(?P<comment>#.*)"
regex = re.compile(regex)
# This maps from example name to the text of the fragment.
examples = { }
class __Example(object):
"""
When parameterized, this displays an example window, containing
example text from blocks with those parameters.
"""
def colorize(self, m):
if m.group("string"):
return "{color=#060}" + m.group(0) + "{/color}"
if m.group("keyword"):
return "{color=#840}" + m.group(0) + "{/color}"
if m.group("comment"):
return "{color=#600}" + m.group(0) + "{/color}"
return m.group(0)
def predict(self, callback):
return
def parameterize(self, name, args):
# Collect the examples we use.
lines1 = [ ]
for i in args:
if i not in examples:
raise Exception("Unknown example %r." % i)
lines1.extend(examples[i])
# Strip off doubled blank lines.
last_blank = False
lines = [ ]
for i in lines1:
if not i and last_blank:
continue
last_blank = not i
i = regex.sub(self.colorize, i)
lines.append(i)
# Join them into a single string.
code = "\n".join(lines) + "\n "
ct = Text(code, size=16, color="#000")
vp = Viewport(ct, child_size=(2000, 2000), ymaximum=120, draggable=True, mousewheel=True)
w = Window(vp, background = "#fffc", top_padding=0, right_padding=0, bottom_padding=0, yminimum=0)
return example_transform(w)
image example = __Example()
init python hide:
import os.path
import re
# A list of files we will be scanning.
files = [ ]
for i in os.listdir(config.gamedir):
if i.endswith(".rpy"):
files.append(os.path.join(config.gamedir, i))
for fn in files:
f = file(fn, "r")
open_examples = set()
for l in f:
l = l.decode("utf-8")
l = l.rstrip()
m = re.match("\s*#begin (\w+)", l)
if m:
example = m.group(1)
if example in examples:
raise Exception("Example %r is defined in two places.", example)
open_examples.add(example)
examples[example] = [ ]
continue
m = re.match("\s*#end (\w+)", l)
if m:
example = m.group(1)
if example not in open_examples:
raise Exception("Example %r is not open.", example)
open_examples.remove(example)
continue
for i in open_examples:
examples[i].append(l)
if open_examples:
raise Exception("Examples %r remain open at the end of %r" % (open_examples, fn))
f.close()
|
