def appendParameter(self,p):
"""
Appends a parameter to the list of parameters of this module.
"""
if Utilities.isFloat(p):
self.params.append(float(p))
else:
self.params.append(p)
def parseString(self, text, defines):
"""
@param text: Text string that is transformed into condition.
@type text: str
@param defines: Global defines
@type defines: dictionary
"""
conditionType = ''
conditionParamChar = None
conditionOperatorString = None
conditionValue = None
#print("PARSING :'" + str(text) + "'")
if text.strip() == "*": # '*' Stands for always
conditionType = '*'
conditionValue = 1
elif Utilities.isFloat(text):
# If the text is a float, then this condition is a probability value [0,1]
# Example production --- A : 0.2 -> B
conditionType = '#' # '#' Stands for probability
conditionValue = float(text)
else:
# Otherwise, this condition is a check on a parameter
# Example production --- A(x) : x > 1 -> B
# The input text is in the form: 'x>1'
conditionType = 'P'
conditionOperatorString = ""
for i in range(len(text)):
c = text[i]
if i == 0:
# The first character is the parameter to be checked
conditionParamChar = c
elif (c not in ('=') and c not in ParametricProduction.ops):
# We finished the operator, we are building the value
if c.isdigit():
# We are checking against a constant
conditionValue = float(text[i:len(text)])
else:
# We are checking against a global defined parameter
#@note: THIS WILL WORK ONLY IF THE GLOBAL DEFINES ARE CREATED BEFORE THE PRODUCTIONS!
definedParam = text[i:len(text)]
if definedParam in defines:
self.conditionValue = defines[definedParam]
break
else:
# We are building the operator
conditionOperatorString += c
self.type = conditionType
self.parameter = conditionParamChar
self.operator = conditionOperatorString
self.value = conditionValue
