Package iceprod :: Package core :: Module lex :: Class ExpParser

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Class ExpParser

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Known Subclasses:

FakeExpParser

Expression parsing class for parameter values.

Instance Methods

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__init__(self, opts={}, steering=Steering(), cache=False, noeval=False) source code

AddSysOpt(self, name, value)

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AddOpt(self, name, value)

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AddSteering(self, name, value)

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sprintf(self, pstring, args)
Format string using the arguments in args

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fetchfilename(self, key)

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fetchval(self, key)

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safe_eval(self, pstring)
Evalualte Python expression after verifying that it does not contain potentially harmful or exploitable expressions.

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_getarg(self, pstring)
Retrieve argument from dictionary of commandline arguments/options

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_getsteering(self, pstring)
Retrieve value from dictionary of steering parameters

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_getdifplus(self, pstring)
Retrieve value from dictionary of steering parameters

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_getsysopt(self, pstring)
Retrieve value from dictionary of system options

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parse(self, pstring)
Parse string for valid expressions.

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call(self, func, args)
Parse a function call in the form $func(args)

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match(self, ochar, s)
Parse string until finding the matching closing character for ochar (),[],{}

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complement(self, ochar)
return complent of char or matching opening and closing symbols (),[],{}

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format_string(self, pstring, args)
Format string using the arguments in args

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cast_string(self, fstring, arg)
cast string to value according to formatting character

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Class Variables

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keywords = ['sprintf', 'args', 'metadata', 'steering', 'eval',...

Method Details

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safe_eval(self, pstring)

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Evalualte Python expression after verifying that it does not contain potentially harmful or exploitable expressions.

Parameters:

pstring - string containing expression

_getarg(self, pstring)

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Retrieve argument from dictionary of commandline arguments/options

Parameters:

pstring - string containing expression

_getsteering(self, pstring)

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Retrieve value from dictionary of steering parameters

Parameters:

pstring - string containing expression

_getdifplus(self, pstring)

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Retrieve value from dictionary of steering parameters

Parameters:

pstring - string containing expression

_getsysopt(self, pstring)

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Retrieve value from dictionary of system options

Parameters:

pstring - string containing expression

parse(self, pstring)

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Parse string for valid expressions.

Parameters:

pstring - string containing expression

call(self, func, args)

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Parse a function call in the form $func(args)

Parameters:

func - name of function
args - list of arguments to pass to function

match(self, ochar, s)

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Parse string until finding the matching closing character for ochar (),[],{}

Parameters:

ochar - opening character
s - string to parse

complement(self, ochar)

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return complent of char or matching opening and closing symbols (),[],{}

Parameters:

ochar - character

Returns:

complementary character for ochar

cast_string(self, fstring, arg)

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cast string to value according to formatting character

Parameters:

fstring - formatting string (e.g. '%006d')
arg - value to cast

Returns:

converted value

Class Variable Details

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keywords

Value:

['sprintf',
 'args',
 'metadata',
 'steering',
 'eval',
 'file',
 'glob',
 'dict',
...