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Assembler Class implemented

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Daniel Cujba
2021-03-31 20:33:56 +03:00
parent 9e54efe74a
commit 0abb223169
1 changed files with 36 additions and 9 deletions
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Main.py
+36 -9
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@@ -3,12 +3,14 @@ class ParserModule:
assembly_file=open(file_name,"r") assembly_file=open(file_name,"r")
segmented_file=[] segmented_file=[]
for line in assembly_file: for line in assembly_file:
line = line.strip()
if len(line)>1: if len(line)>1:
command=[None,None] command=[None,None]
if "//" in line: if "//" in line:
continue line=line[:line.find("//")]
elif "(" in line: if line =="":
continue
line = line.strip()
if "(" in line:
command[0]="L" command[0]="L"
command[1]=line.strip("()") command[1]=line.strip("()")
elif "@" in line: elif "@" in line:
@@ -33,11 +35,11 @@ class ParserModule:
class SymbolTableModule: class SymbolTableModule:
def __init__(self): def __init__(self):
self.c_commands=[{None:"000","M":"001","D":"010","MD":"011","A":"100","AM":"101","AD":"110","AMD":"111"},{"0":"0101010","1":"0111111","-1":"0001101","D":"0001100","A":"0110000","!D":"0001101","!A":"0110001","-D":"0001111","-A":"0110011","D+1":"0011111","A+1":"0110111","D-1":"0001110","A-1":"0110010","D+A":"0000010","D-A":"0010011","A-D":"0000111","D&A":"0000000","D|A":"0010101","M":"1110000","!M":"1110001","-M":"1110011","M+1":"1110111","M-1":"1110010","D+M":"1000010","D-M":"1010011","M-D":"1000111","D&M":"1000000","D|M":"1010101"},{None:"000","JGT":"001","JEG":"010","JGE":"011","JLT":"100","JNE":"101","JLE":"110","JMP":"111"}] self.c_commands=[{None:"000","M":"001","D":"010","MD":"011","A":"100","AM":"101","AD":"110","AMD":"111"},{"0":"0101010","1":"0111111","-1":"0111010","D":"0001100","A":"0110000","!D":"0001101","!A":"0110001","-D":"0001111","-A":"0110011","D+1":"0011111","A+1":"0110111","D-1":"0001110","A-1":"0110010","D+A":"0000010","D-A":"0010011","A-D":"0000111","D&A":"0000000","D|A":"0010101","M":"1110000","!M":"1110001","-M":"1110011","M+1":"1110111","M-1":"1110010","D+M":"1000010","D-M":"1010011","M-D":"1000111","D&M":"1000000","D|M":"1010101"},{None:"000","JGT":"001","JEG":"010","JGE":"011","JLT":"100","JNE":"101","JLE":"110","JMP":"111"}]
self.a_commands={"SP":"0000000000000000","LCL":"0000000000000001","ARG":"0000000000000010","THIS":"0000000000000011","THAT":"0000000000000100","R0":"0000000000000000","R1":"0000000000000001","R2":"0000000000000010","R3":"0000000000000011","R4":"0000000000000100","R5":"0000000000000101","R6":"0000000000000110","R7":"0000000000000111","R8":"0000000000001000","R9":"0000000000001001","R10":"0000000000001010","R11":"0000000000001011","R12":"0000000000001100","R13":"0000000000001101","R14":"0000000000001110","R15":"0000000000001111","SCREEN":"0100000000000000","KBD":"0110000000000000"} self.a_commands={"SP":"0000000000000000","LCL":"0000000000000001","ARG":"0000000000000010","THIS":"0000000000000011","THAT":"0000000000000100","R0":"0000000000000000","R1":"0000000000000001","R2":"0000000000000010","R3":"0000000000000011","R4":"0000000000000100","R5":"0000000000000101","R6":"0000000000000110","R7":"0000000000000111","R8":"0000000000001000","R9":"0000000000001001","R10":"0000000000001010","R11":"0000000000001011","R12":"0000000000001100","R13":"0000000000001101","R14":"0000000000001110","R15":"0000000000001111","SCREEN":"0100000000000000","KBD":"0110000000000000"}
self.counter=1024 self.counter=1024
def translate_l_commands(self,assembly_array): def translate_l_commands(self,assembly_array):
line_idx=1 line_idx=0
for command in assembly_array: for command in assembly_array:
if not command[0] == "L": if not command[0] == "L":
line_idx+=1 line_idx+=1
@@ -46,9 +48,13 @@ class SymbolTableModule:
def translate_a_commands(self,assembly_array): def translate_a_commands(self,assembly_array):
for command in assembly_array: for command in assembly_array:
if command[0] == "A" and not self.a_commands.get(command[1]) and not command[1].isdecimal(): if command[0] == "A" and not self.a_commands.get(command[1]):
self.a_commands[command[1]]=self.decimal_to_binary(self.counter) if not command[1].isdecimal():
self.counter+=1 self.a_commands[command[1]]=self.decimal_to_binary(self.counter)
self.counter+=1
continue
self.a_commands[command[1]]=self.decimal_to_binary(int(command[1]))
def check_command(self,command_array): def check_command(self,command_array):
command_type,command=command_array command_type,command=command_array
@@ -56,7 +62,7 @@ class SymbolTableModule:
return self.a_commands.get(command) return self.a_commands.get(command)
if command_type == "C": if command_type == "C":
return "111"+self.c_commands[1].get(command[1])+self.c_commands[0].get(command[0])+self.c_commands[2].get(command[2]) return "111"+self.c_commands[1].get(command[1])+self.c_commands[0].get(command[0])+self.c_commands[2].get(command[2])
return "" return None
def decimal_to_binary(self,value): def decimal_to_binary(self,value):
binary_power=16 binary_power=16
@@ -67,3 +73,24 @@ class SymbolTableModule:
binary_array[15-binary_power]="1" binary_array[15-binary_power]="1"
binary_power-=1 binary_power-=1
return "".join(binary_array) return "".join(binary_array)
class Assembler:
def __init__(self):
self.parser=ParserModule()
self.symbol_table=SymbolTableModule()
def assemble_file(self,file_name):
assembly_array=self.parser.parse_file(file_name)
self.symbol_table.translate_l_commands(assembly_array)
self.symbol_table.translate_a_commands(assembly_array)
machine_code_array=[]
for item in assembly_array:
machine_code_line=self.symbol_table.check_command(item)
if machine_code_line != None:
machine_code_array.append(machine_code_line)
file_content="\n".join(machine_code_array)
machine_code_file=open(file_name[:-3]+"hack","x")
machine_code_file.write(file_content)
machine_code_file.close()
assembler=Assembler()
assembler.assemble_file(input("File Path: "))