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variable assignment added #5

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variable assignment added #5

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d393fab
test
songWukong Nov 19, 2017
497398a
test
songWukong Nov 19, 2017
519b0c7
test
songWukong Nov 19, 2017
f74b942
test
songWukong Nov 19, 2017
0553760
assign variables added
songWukong Nov 19, 2017
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45 changes: 40 additions & 5 deletions src/interpreter.py
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Original file line number Diff line number Diff line change
@@ -1,8 +1,11 @@
from calc import *

class Interpreter:

__variables = {}
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As we are using this for variable assignment why not store the corresponding values into the dictionary itself and then we can access each of values as keys.

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We do actually. And we can access values via keys like so:
variables = {'var1' : val1, 'var2' : val2}
print variables[var1]
output: val1


def __init__(self, calc):

self.calc = calc

def run(self):
Expand Down Expand Up @@ -43,7 +46,11 @@ def __tokenize_Statement__(self, code):

if (token == "PRINT"):
del code[0]
self.__parse_Print__(code)
self.__parse_Print__(code)

elif (token == "LET"):
del code[0]
self.__parse_Let__(code)

return 1

Expand All @@ -68,8 +75,8 @@ def __parse_String__(self, code):
del code[0]
i += 1

return string;

return string;

def __parse_Print__(self, code):

Expand All @@ -80,9 +87,37 @@ def __parse_Print__(self, code):

elif (code[0].isdigit()):
num = self.calc.parse_Formula(code)
print num
print num


def __parse_Let__(self, code):

varName = ""
varVal = ""

while (code[0] != "="):
varName += code[0]
del code[0]

if (code[0] == "="):
del code[0]

try:
while (code[0] != "\n"):

if (code[0].isdigit()):
varVal += code[0]
del code[0]

except (IndexError):
self.__variables[varName] = int(varVal)
print self.__variables
return

self.__variables[varName] = int(varVal)
print self.__variables


calc = Calc()
interpreter = Interpreter(calc)
interpreter.run()
interpreter.run()
12 changes: 3 additions & 9 deletions src/source.bas
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Original file line number Diff line number Diff line change
@@ -1,9 +1,3 @@
PRINT "Hello, world"
PRINT "Hi"
PRINT 2
PRINT 123
PRINT 111
PRINT "3*2+2*(5-6)-234 ="
PRINT 3*2+2*(5-6)-234
PRINT "23-698*(4*(63-25*69)-56) ="
PRINT 23-698*(4*(63-25*69)-56)
LET a=10
LET b=2
LET c=4