CompilerJFTT/emulator.py at master · Merulo/CompilerJFTT · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
import re
import subprocess
import filecmp
import os
import sys

#check arguments
if len(sys.argv) == 1:
    sys.exit()

# print(str(sys.argv))

with open(sys.argv[1]) as f:
    content = f.readlines()

content = [x.strip() for x in content]

variables = {}
writeValues = []
currentLine = 0

def isInteger(s):
    try:
        int(s)
        return True
    except ValueError:
        return False

def getTab(tab, variables):
    if "(" not in tab:
        return tab
    index = tab[tab.find("(")+1:tab.find(")")]
    if isInteger(index):
        return tab
    value = variables[index]
    tab = tab.replace("(" + index + ")", "(" + str(value) + ")")
    return tab

def getJumpLocation(target, content):
    i = 0
    for line in content:
        if line == target:
            return i
        i+=1
    return -1

simulatedInstructions = 0

while 1:
    line = content[currentLine]
    values = line.split()
    simulatedInstructions+=1
    if (simulatedInstructions > 2000000):
        sys.exit(1)
    if (values[0] == "HALT"):
        break
    elif (values[0] == "CONST"):
        variables[getTab(values[1], variables)] = int(values[2])
        currentLine+=1
    elif (values[0] == "COPY"):
        variables[getTab(values[1], variables)] = variables[getTab(values[2], variables)]
        currentLine+=1
    elif (values[0] == "INC"):
        variables[getTab(values[1], variables)]+= 1
        currentLine+=1
    elif (values[0] == "HALF"):
        variables[getTab(values[1], variables)] = variables[getTab(values[1], variables)] // 2
        currentLine+=1
    elif (values[0] == "DEC"):
        option = getTab(values[1], variables)
        variables[option] -= 1
        if (variables[option] < 0):
            variables[option] = 0
        currentLine+=1
    elif (values[0] == "ADD"):
        variables[getTab(values[1], variables)]+= variables[getTab(values[2], variables)]
        currentLine+=1
    elif (values[0] == "MUL"):
        variables[getTab(values[1], variables)]*= variables[getTab(values[2], variables)]
        currentLine+=1
    elif (values[0] == "WRITE"):
        writeValues.append(variables[getTab(values[1], variables)])
        currentLine+=1
    elif (values[0] == "DIV"):
        option = getTab(values[1], variables)
        if (variables[getTab(values[2], variables)] == 0):
            variables[option] = 0
        else:
            variables[option] = variables[option] // variables[getTab(values[2], variables)]
        currentLine+=1
    elif (values[0] == "MOD"):
        option = getTab(values[1], variables)
        if getTab(values[2], variables) in variables:
            if (variables[getTab(values[2], variables)] == 0):
                variables[option] = 0
            else:
                variables[option] = variables[option] % variables[getTab(values[2], variables)]
        else:
            variables[option] = variables[option] % 2
        currentLine+=1
    elif (values[0] == "SUB"):
        option = getTab(values[1], variables)
        variables[option] -= variables[getTab(values[2], variables)]
        if (variables[option] < 0):
            variables[option] = 0
        currentLine+=1
    elif (values[0] == "JUMP"):
        # print ("JUMP to ", values[1])
        currentLine = getJumpLocation(values[1], content)
    elif (values[0] == "JZERO"):
        # print ("JZERO value=", variables[getTab(values[1], variables)])
        if (variables[getTab(values[1], variables)] == 0):
            currentLine = getJumpLocation(values[2], content)
            # print("JUMPING TO", values[2])
        else:
            currentLine+= 1
    else:
        currentLine+=1


# print(variables)
# print(writeValues)
# print(content)

# create outputfile
tmpFileName = "tmp2.ir"


f = open(tmpFileName, "w")
f.write("DECLARE\n")
f.write("a;\n")
f.write("IN\n")
for writeValue in writeValues:
    f.write("\tWRITE " + str(writeValue) + ";\n")

if (len(writeValues) == 0):
    f.write("a:=0;\n")
f.write("END\n")

f.close()

fNull = open(os.devnull, 'w')
cmd = ['./kompilator', tmpFileName, sys.argv[2], "-em"]
# print(cmd)
process = subprocess.Popen(cmd)
process.wait()
print()

os.remove(tmpFileName)
os.remove(sys.argv[1])

sys.exit(0)