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93fd2d4f43
Without this, having an empty line in an override will cause codegen to unceremoniously choke to death. https://bugzilla.gnome.org/show_bug.cgi?id=640341
291 lines
9.2 KiB
Python
291 lines
9.2 KiB
Python
# -*- Mode: Python; py-indent-offset: 4 -*-
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# this file contains code for loading up an override file. The override file
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# provides implementations of functions where the code generator could not
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# do its job correctly.
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import fnmatch
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import os
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import re
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import string
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import sys
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def class2cname(klass, method):
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c_name = ''
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for c in klass:
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if c.isupper():
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c_name += '_' + c.lower()
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else:
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c_name += c
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return c_name[1:] + '_' + method
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import_pat = re.compile(r'\s*import\s+(\S+)\.([^\s.]+)\s+as\s+(\S+)')
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class Overrides:
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def __init__(self, filename=None, path=[]):
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self.modulename = None
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self.ignores = {}
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self.glob_ignores = []
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self.type_ignores = {}
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self.overrides = {}
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self.overridden = {}
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self.kwargs = {}
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self.noargs = {}
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self.onearg = {}
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self.staticmethod = {}
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self.classmethod = {}
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self.startlines = {}
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self.override_attrs = {}
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self.override_slots = {}
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self.headers = ''
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self.body = ''
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self.init = ''
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self.imports = []
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self.defines = {}
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self.functions = {}
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self.newstyle_constructors = {}
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self.path = [os.path.abspath(x) for x in path]
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if filename:
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self.handle_file(filename)
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def handle_file(self, filename):
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oldpath = os.getcwd()
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fp = None
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for path in self.path:
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os.chdir(oldpath)
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os.chdir(path)
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try:
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fp = open(filename, 'r')
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break
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except:
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os.chdir(oldpath)
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if not fp:
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raise Exception, "Couldn't find file %s" % filename
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dirname = path
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if dirname != oldpath:
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os.chdir(dirname)
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# read all the components of the file ...
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bufs = []
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startline = 1
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lines = []
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line = fp.readline()
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linenum = 1
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while line:
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if line == '%%\n' or line == '%%':
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if lines:
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bufs.append((string.join(lines, ''), startline))
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startline = linenum + 1
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lines = []
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else:
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lines.append(line)
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line = fp.readline()
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linenum = linenum + 1
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if lines:
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bufs.append((string.join(lines, ''), startline))
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if not bufs: return
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for buf, startline in bufs:
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self.__parse_override(buf, startline, filename)
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os.chdir(oldpath)
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def __parse_override(self, buffer, startline, filename):
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pos = string.find(buffer, '\n')
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if pos >= 0:
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line = buffer[:pos]
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rest = buffer[pos+1:]
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else:
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line = buffer ; rest = ''
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words = string.split(line)
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if len(words) == 0:
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return
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command = words[0]
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if (command == 'ignore' or
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command == 'ignore-' + sys.platform):
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"ignore/ignore-platform [functions..]"
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for func in words[1:]:
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self.ignores[func] = 1
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for func in string.split(rest):
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self.ignores[func] = 1
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elif (command == 'ignore-glob' or
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command == 'ignore-glob-' + sys.platform):
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"ignore-glob/ignore-glob-platform [globs..]"
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for func in words[1:]:
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self.glob_ignores.append(func)
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for func in string.split(rest):
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self.glob_ignores.append(func)
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elif (command == 'ignore-type' or
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command == 'ignore-type-' + sys.platform):
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"ignore-type/ignore-type-platform [typenames..]"
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for typename in words[1:]:
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self.type_ignores[typename] = 1
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for typename in string.split(rest):
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self.type_ignores[typename] = 1
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elif command == 'override':
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"override function/method [kwargs|noargs|onearg] [staticmethod|classmethod]"
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func = words[1]
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if 'kwargs' in words[1:]:
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self.kwargs[func] = 1
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elif 'noargs' in words[1:]:
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self.noargs[func] = 1
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elif 'onearg' in words[1:]:
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self.onearg[func] = True
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if 'staticmethod' in words[1:]:
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self.staticmethod[func] = True
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elif 'classmethod' in words[1:]:
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self.classmethod[func] = True
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if func in self.overrides:
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raise RuntimeError("Function %s is being overridden more than once" % (func,))
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self.overrides[func] = rest
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self.startlines[func] = (startline + 1, filename)
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elif command == 'override-attr':
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"override-slot Class.attr"
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attr = words[1]
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self.override_attrs[attr] = rest
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self.startlines[attr] = (startline + 1, filename)
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elif command == 'override-slot':
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"override-slot Class.slot"
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slot = words[1]
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self.override_slots[slot] = rest
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self.startlines[slot] = (startline + 1, filename)
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elif command == 'headers':
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"headers"
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self.headers = '%s\n#line %d "%s"\n%s' % \
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(self.headers, startline + 1, filename, rest)
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elif command == 'body':
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"body"
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self.body = '%s\n#line %d "%s"\n%s' % \
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(self.body, startline + 1, filename, rest)
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elif command == 'init':
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"init"
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self.init = '%s\n#line %d "%s"\n%s' % \
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(self.init, startline + 1, filename, rest)
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elif command == 'modulename':
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"modulename name"
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self.modulename = words[1]
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elif command == 'include':
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"include filename"
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for filename in words[1:]:
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self.handle_file(filename)
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for filename in string.split(rest):
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self.handle_file(filename)
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elif command == 'import':
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"import module1 [\n module2, \n module3 ...]"
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for line in string.split(buffer, '\n'):
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match = import_pat.match(line)
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if match:
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self.imports.append(match.groups())
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elif command == 'define':
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"define funcname [kwargs|noargs|onearg] [classmethod|staticmethod]"
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"define Class.method [kwargs|noargs|onearg] [classmethod|staticmethod]"
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func = words[1]
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klass = None
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if func.find('.') != -1:
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klass, func = func.split('.', 1)
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if not self.defines.has_key(klass):
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self.defines[klass] = {}
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self.defines[klass][func] = rest
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else:
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self.functions[func] = rest
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if 'kwargs' in words[1:]:
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self.kwargs[func] = 1
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elif 'noargs' in words[1:]:
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self.noargs[func] = 1
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elif 'onearg' in words[1:]:
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self.onearg[func] = 1
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if 'staticmethod' in words[1:]:
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self.staticmethod[func] = True
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elif 'classmethod' in words[1:]:
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self.classmethod[func] = True
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self.startlines[func] = (startline + 1, filename)
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elif command == 'new-constructor':
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"new-constructor GType"
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gtype, = words[1:]
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self.newstyle_constructors[gtype] = True
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def is_ignored(self, name):
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if self.ignores.has_key(name):
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return 1
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for glob in self.glob_ignores:
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if fnmatch.fnmatchcase(name, glob):
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return 1
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return 0
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def is_type_ignored(self, name):
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return name.rstrip('*') in self.type_ignores
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def is_overriden(self, name):
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return self.overrides.has_key(name)
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def is_already_included(self, name):
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return self.overridden.has_key(name)
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def override(self, name):
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self.overridden[name] = 1
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return self.overrides[name]
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def define(self, klass, name):
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self.overridden[class2cname(klass, name)] = 1
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return self.defines[klass][name]
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def function(self, name):
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return self.functions[name]
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def getstartline(self, name):
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return self.startlines[name]
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def wants_kwargs(self, name):
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return self.kwargs.has_key(name)
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def wants_noargs(self, name):
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return self.noargs.has_key(name)
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def wants_onearg(self, name):
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return self.onearg.has_key(name)
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def is_staticmethod(self, name):
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return self.staticmethod.has_key(name)
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def is_classmethod(self, name):
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return self.classmethod.has_key(name)
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def attr_is_overriden(self, attr):
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return self.override_attrs.has_key(attr)
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def attr_override(self, attr):
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return self.override_attrs[attr]
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def slot_is_overriden(self, slot):
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return self.override_slots.has_key(slot)
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def slot_override(self, slot):
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return self.override_slots[slot]
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def get_headers(self):
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return self.headers
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def get_body(self):
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return self.body
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def get_init(self):
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return self.init
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def get_imports(self):
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return self.imports
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def get_defines_for(self, klass):
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return self.defines.get(klass, {})
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def get_functions(self):
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return self.functions
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