def parse(expression_string, **names):
expression = expr_parser.parse(expression_string)
expression = substitute(expression, **names)
return expression
def finish():
if name is None:
return
expression = substituteExpressions(parse(text), expressions)
expression = substitute(expression, **symbols)
expressions[name] = expression
"don't know how to get argument names for '%r'" \
% arg
# Construct the expression.
subexprs = map(Symbol, symbol_names)
expr = Call(Constant(arg), subexprs)
# If it's numerical, wrap it in a constant.
elif type(arg) in (int, float, long):
expr = Constant(arg)
# Don't know how to handle other things.
else:
raise TypeError, "argument must be an expression"
# Substitute names.
expr = substitute(expr, **names)
# Set types.
if types_from is not None:
expr = setTypesFrom(expr, **types_from)
if types is not None:
expr = setTypes(expr, **types)
# Compile it, if requested.
if compile:
expr = compiler.compile(expr)
# All done.
return expr
def parse(expression_string, **names):
expression = expr_parser.parse(expression_string)
expression = substitute(expression, **names)
