def fetch(self):
instrToFetch = self.state.instrBufferSize - len(self.state.instrBuffer)
'''print "InstrBuffer has " + str(len(self.state.instrBuffer)) + " entries"
print "There are " + str(self.state.instrBufferSize) + " total spaces"
print "Need to fetch " + str(instrToFetch)'''
for i in range(instrToFetch):
instruction = Instruction(self.state.instructions[self.state.programCounter + i])
instruction.parse()
#print "Grabbed instruction " + str(instruction)
self.state.instrBuffer.append(instruction)
self.state.programCounter += instrToFetch
return
def populate_table(table: SymbolTable,
instructions: Iterator[str]) -> Iterator[Instruction]:
""" first pass: populate symbol table with labels """
instruction_number = 0
for line in instructions:
parsed = Instruction.parse(line)
if isinstance(parsed, Label):
table.put_label(parsed, instruction_number)
else:
instruction_number += 1
yield parsed
