win32 platform

Lib/site-packages/pycparser/plyparser.py

@@ -0,0 +1,55 @@
+#-----------------------------------------------------------------
+# plyparser.py
+#
+# PLYParser class and other utilites for simplifying programming
+# parsers with PLY
+#
+# Copyright (C) 2008-2015, Eli Bendersky
+# License: BSD
+#-----------------------------------------------------------------
+
+
+class Coord(object):
+    """ Coordinates of a syntactic element. Consists of:
+            - File name
+            - Line number
+            - (optional) column number, for the Lexer
+    """
+    __slots__ = ('file', 'line', 'column', '__weakref__')
+    def __init__(self, file, line, column=None):
+        self.file = file
+        self.line = line
+        self.column = column
+
+    def __str__(self):
+        str = "%s:%s" % (self.file, self.line)
+        if self.column: str += ":%s" % self.column
+        return str
+
+
+class ParseError(Exception): pass
+
+
+class PLYParser(object):
+    def _create_opt_rule(self, rulename):
+        """ Given a rule name, creates an optional ply.yacc rule
+            for it. The name of the optional rule is
+            <rulename>_opt
+        """
+        optname = rulename + '_opt'
+
+        def optrule(self, p):
+            p[0] = p[1]
+
+        optrule.__doc__ = '%s : empty\n| %s' % (optname, rulename)
+        optrule.__name__ = 'p_%s' % optname
+        setattr(self.__class__, optrule.__name__, optrule)
+
+    def _coord(self, lineno, column=None):
+        return Coord(
+                file=self.clex.filename,
+                line=lineno,
+                column=column)
+
+    def _parse_error(self, msg, coord):
+        raise ParseError("%s: %s" % (coord, msg))