Commit 14b5de02 authored by Daniel Brown's avatar Daniel Brown
Browse files

added in const parsing. Each constant is read processed and added to the...

added in const parsing. Each constant is read processed and added to the kat.constants dictionary. The key is the name of the constant and the value is a namedtuple containing the value and a list of all the lines that reference the constant. Once a constant has been read it replaces the value in any string it finds, so once the command has been parsed you can not change the value of the constant and expect it to change the value of the previously parsed parameters
parent f80f2693
from pykat import finesse
from pykat.detectors import *
from pykat.components import *
from pykat.commands import *
from pykat.structs import *
import numpy as np
import pylab as pl
code = """
l l1 2 0 n1
m m1 0.99 0.01 0 n1 n2
s cav1 $test n2 n3
m m2 0.99 0.01 -0.1 n3 n4
attr m2 m 1 # mech sus1
const test 1200
ad up_refl 0 n1
ad low_refl 0 n1
qd refl_A 0 0 n1
qd refl_Q 0 90 n1
qd tran_A 0 0 n4
qd tran_Q 0 90 n4
put up_refl f $x1
put low_refl f $mx1
yaxis log re:im
kat = finesse.kat(kat_code=code)
kat.signals.apply(kat.l1.power, 1, 0)
kat.signals.apply(kat.m1.phi, 1, 90)
kat.add(xaxis('log', [1, 1000], kat.signals.f, 100))
out =, printerr=0)
......@@ -34,6 +34,8 @@ import pykat
import warnings
import re
from collections import namedtuple
from pykat.node_network import NodeNetwork
from pykat.detectors import Detector
from pykat.components import Component
......@@ -49,7 +51,6 @@ from PyQt4.QtGui import QApplication
NO_GUI = False
pykat_version = "0.1"
pykat_web = ""
......@@ -236,7 +237,9 @@ class Block:
def name(self): return self.__name
class kat(object):
Constant = namedtuple('Constant', 'name, value, usedBy')
class kat(object):
def __init__(self, kat_file=None, kat_code=None, katdir="", katname="", tempdir=None, tempname=None):
......@@ -254,6 +257,7 @@ class kat(object):
self.__tempname = tempname
self.pykatgui = None
self.__signals = Signals()
self.constants = {}
# initialise default block
self.__currentTag= NO_BLOCK
......@@ -327,16 +331,61 @@ class kat(object):
def parseKatCode(self, code):
#commands = code.split("\n")
def processConstants(self, commands):
Before fully parsing a bunch of commands firstly any constants or variables
to be recorded and replaced.
constants = self.constants
for line in commands:
values = line.split(' ')
if len(values)>0 and values[0] == 'const':
if len(values) == 3:
if values[1] in constants:
raise pkex.BasePyKatException('const command with the name "{0}" already used'.format(values[1]))
constants[str(values[1])] = Constant(values[1], SIfloat(values[2]), [])
raise pkex.BasePyKatException('const command "{0}" was not the correct format'.format(line))
commands_new = []
print constants
for line in commands:
values = line.split(' ')
if values[0] != 'const':
# check if we have a var/constant in this line
if line.find('$') >= 0:
for key in constants.keys():
if line.find('$'+key) > -1:
line = line.replace('$'+key, str(constants[key].value))
self.constants = constants
return commands_new
def parseCommands(self, commands):
blockComment = False
# convert block of strings to list of lines
commands = commands.split('\n')
after_process = [] # list of commands that should be processed after
# objects have been set and created
for line in commands.split("\n"):
for line in commands:
#for line in commands:
if len(line.strip()) >= 2:
line = line.strip()
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