9.3.3 ListErrors

The template:

#import pprint
#errorCatcher ListErrors
$noValue
$anotherMissingValue.really
$pprint.pformat($errorCatcher.listErrors)
## This is really self.errorCatcher().listErrors()

The output:

$noValue
$anotherMissingValue.really
[{'code': 'VFS(SL,"noValue",1)',
  'exc_val': <NameMapper.NotFound instance at 0x8170ecc>,
  'lineCol': (3, 1),
  'rawCode': '$noValue',
  'time': 'Wed May 15 00:38:23 2002'},
 {'code': 'VFS(SL,"anotherMissingValue.really",1)',
  'exc_val': <NameMapper.NotFound instance at 0x816d0fc>,
  'lineCol': (4, 1),
  'rawCode': '$anotherMissingValue.really',
  'time': 'Wed May 15 00:38:23 2002'}]

The generated import:

import pprint

Then in the generated class, we have our familiar .respond method and several new methods:

def __errorCatcher1(self, localsDict={}):
    """
    Generated from $noValue at line, col (3, 1).
    """

    try:
        return eval('''VFS(SL,"noValue",1)''', globals(), localsDict)
    except self._errorCatcher.exceptions(), e:
        return self._errorCatcher.warn(exc_val=e, code= 'VFS(SL,"noValue",1)' ,
	    rawCode= '$noValue' , lineCol=(3, 1))

def __errorCatcher2(self, localsDict={}):
    """
    Generated from $anotherMissingValue.really at line, col (4, 1).
    """

    try:
        return eval('''VFS(SL,"anotherMissingValue.really",1)''', globals(), 
	    localsDict)
    except self._errorCatcher.exceptions(), e:
        return self._errorCatcher.warn(exc_val=e, 
	    code= 'VFS(SL,"anotherMissingValue.really",1)' , 
	    rawCode= '$anotherMissingValue.really' , lineCol=(4, 1))

def __errorCatcher3(self, localsDict={}):
    """
    Generated from $pprint.pformat($errorCatcher.listErrors) at line, col 
    (5, 1).
    """

    try:
        return eval('''VFN(pprint,"pformat",0)(VFS(SL,
	    "errorCatcher.listErrors",1))''', globals(), localsDict)
    except self._errorCatcher.exceptions(), e:
        return self._errorCatcher.warn(exc_val=e, code= 
	    'VFN(pprint,"pformat",0)(VFS(SL,"errorCatcher.listErrors",1))' , 
	    rawCode= '$pprint.pformat($errorCatcher.listErrors)' , 
	    lineCol=(5, 1))

def respond(self,
        trans=None,
        dummyTrans=False,
        VFS=valueFromSearchList,
        VFN=valueForName,
        getmtime=getmtime,
        currentTime=time.time):


    """
    This is the main method generated by Cheetah
    """

    if not trans:
        trans = DummyTransaction()
        dummyTrans = True
    write = trans.response().write
    SL = self._searchList
    filter = self._currentFilter
    globalSetVars = self._globalSetVars
    
    ########################################
    ## START - generated method body
    
    if exists(self._filePath) and getmtime(self._filePath) > self._fileMtime:
        self.compile(file=self._filePath)
        write(getattr(self, self._mainCheetahMethod_for_x)(trans=trans))
        if dummyTrans:
            return trans.response().getvalue()
        else:
            return ""
    if self._errorCatchers.has_key("ListErrors"):
        self._errorCatcher = self._errorCatchers["ListErrors"]
    else:
        self._errorCatcher = self._errorCatchers["ListErrors"] = \
	    ErrorCatchers.ListErrors(self)
    write(filter(self.__errorCatcher1(localsDict=locals()))) 
        # generated from '$noValue' at line 3, col 1.
    write('\n')
    write(filter(self.__errorCatcher2(localsDict=locals()))) 
        # generated from '$anotherMissingValue.really' at line 4, col 1.
    write('\n')
    write(filter(self.__errorCatcher3(localsDict=locals()))) 
        # generated from '$pprint.pformat($errorCatcher.listErrors)' at line 
	# 5, col 1.
    write('\n')
    #  This is really self.errorCatcher().listErrors()
    
    ########################################
    ## END - generated method body
    
    if dummyTrans:
        return trans.response().getvalue()
    else:
        return ""

So whenever an error catcher is active, each placeholder gets wrapped in its own method. No wonder error catchers slow down the system!