Commit codegen stuff to head from extension-class-branch

1 files changed, 64 insertions, 0 deletions

diff --git a/codegen/override.py b/codegen/override.py
new file mode 100644
index 00000000..d8fc0c17
--- /dev/null
+++ b/codegen/override.py
@@ -0,0 +1,64 @@
+# -*- Mode: Python; py-indent-offset: 4 -*-
+
+# this file contains code for loading up an override file.  The override file
+# provides implementations of functions where the code generator could not
+# do its job correctly.
+
+import sys, string, fnmatch
+
+class Overrides:
+    def __init__(self, fp=sys.stdin):
+	self.ignores = {}
+	self.glob_ignores = []
+	self.overrides = {}
+	self.kwargs = {}
+        self.headers = ''
+        self.init = ''
+	if fp == None: return
+	# read all the components of the file ...
+	bufs = map(string.strip, string.split(fp.read(), '%%'))
+	if bufs == ['']: return
+	for buf in bufs:
+	    self.__parse_override(buf)
+    def __parse_override(self, buffer):
+	pos = string.find(buffer, '\n')
+	if pos:
+	    line = buffer[:pos]
+	    rest = buffer[pos+1:]
+	else:
+	    line = buffer ; rest = ''
+	words = string.split(line)
+	if words[0] == 'ignore':
+	    for func in words[1:]: self.ignores[func] = 1
+	    for func in string.split(rest): self.ignores[func] = 1
+	elif words[0] == 'ignore-glob':
+	    for func in words[1:]: self.glob_ignores.append(func)
+	    for func in string.split(rest):
+		self.glob_ignores.append(func)
+	elif words[0] == 'override':
+	    func = words[1]
+	    if 'kwargs' in words[1:]:
+		self.kwargs[func] = 1
+	    self.overrides[func] = rest
+        elif words[0] == 'headers':
+            self.headers = self.headers + '\n' + rest
+        elif words[0] == 'init':
+            self.init = self.init + '\n' + rest
+
+    def is_ignored(self, name):
+	if self.ignores.has_key(name):
+	    return 1
+	for glob in self.glob_ignores:
+	    if fnmatch.fnmatchcase(name, glob):
+		return 1
+	return 0
+    def is_overriden(self, name):
+	return self.overrides.has_key(name)
+    def override(self, name):
+	return self.overrides[name]
+    def wants_kwargs(self, name):
+	return self.kwargs.has_key(name)
+    def get_headers(self):
+        return self.headers
+    def get_init(self):
+        return self.init