Revision: 3740
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=3740&view=rev
Author: mdboom
Date: 2007-08-27 12:32:38 -0700 (Mon, 27 Aug 2007)
Log Message:
-----------
Better mathtext error messages. Fix bug when using \sqrt without
explicit root.
Modified Paths:
--------------
trunk/matplotlib/lib/matplotlib/mathtext.py
Modified: trunk/matplotlib/lib/matplotlib/mathtext.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/mathtext.py 2007-08-27 18:51:22 UTC (rev
3739)
+++ trunk/matplotlib/lib/matplotlib/mathtext.py 2007-08-27 19:32:38 UTC (rev
3740)
@@ -1932,7 +1932,14 @@
def parse(self, s, fonts_object, fontsize, dpi):
self._state_stack = [self.State(fonts_object, 'default', fontsize,
dpi)]
- self._expression.parseString(s)
+ try:
+ self._expression.parseString(s)
+ except ParseException, err:
+ raise ValueError("\n".join([
+ "",
+ err.line,
+ " " * (err.column - 1) + "^",
+ str(err)]))
return self._expr
# The state of the parser is maintained in a stack. Upon
@@ -2155,7 +2162,7 @@
super = next1
sub = next2
else:
- raise ParseFatalException("Subscript/superscript sequence is too
long.")
+ raise ParseFatalException("Subscript/superscript sequence is too
long. Use braces { } to remove ambiguity.")
state = self.get_state()
rule_thickness = state.font_output.get_underline_thickness(
@@ -2277,7 +2284,7 @@
state.font, state.fontsize, state.dpi)
if root is None:
- root = Box()
+ root = Box(0., 0., 0.)
else:
if not isinstance(root, ParseResults):
raise ParseFatalException(
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