.
This commit is contained in:
QkoSad
Executable
+350
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import os
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from pathlib import Path
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from tokenizer import Tokenizer
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from vmwriter import VMWriter
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from symbol_table import SymbolTable
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# TODO add names to variables when you call for them, aka current_vm_append(thingtobeappended=blablac)
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class CompilationEngine:
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def __init__(self, tokenizer, full_path_vm):
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self.string = self.sub_type = self.class_name = self.function_type = ''
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self.tab = self.recursion_index = 0
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self.tokenizer = tokenizer
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self.sym_table = []
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self.vmwriter = VMWriter(full_path_vm)
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self.current_vm = [] # used to reverse some of the commands, eg a+b need to be a b +
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def search_kind_of_sym(self, current_vm):
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if self.sym_table[-1].kind_of(current_vm) is not None:
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return self.sym_table[-1].kind_of(current_vm), self.sym_table[-1].index_of(current_vm)
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for i in range(len(self.sym_table) - 2, -1,
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-1): # start from the amount of sym_tables -2 so it starts from one below the current,
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# until it is bigger than -1, walking it backwards
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if self.sym_table[i].kind_of(current_vm) in ('static', 'this'):
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return self.sym_table[i].kind_of(current_vm), self.sym_table[i].index_of(current_vm)
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def search_type_of_sym(self, current_vm):
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for i in range(len(self.sym_table) - 1, -1, -1):
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if self.sym_table[i].type_of(current_vm) is not None:
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return self.sym_table[i].type_of(current_vm)
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def write_token(self):
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if self.tokenizer.token_type() == 'stringConstant':
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self.string += ' ' * self.tab + '<' + self.tokenizer.token_type() + '> ' + self.tokenizer.token.strip(
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'"') + ' </' + self.tokenizer.token_type() + '>\n'
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else:
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self.string += ' ' * self.tab + '<' + self.tokenizer.token_type() + '> ' + self.tokenizer.token + ' </' \
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+ self.tokenizer.token_type() + '>\n'
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def compile_class(self):
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self.sym_table.append(SymbolTable())
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self.tokenizer.advance() # class ->
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self.tokenizer.advance() # type ->
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self.class_name = self.tokenizer.token
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self.tokenizer.advance() # name ->
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self.tokenizer.advance() # { ->
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while self.tokenizer.token != '}':
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if self.tokenizer.token in ['static', 'field']:
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self.compile_class_var_dec()
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if self.tokenizer.token in ['constructor', 'function', 'method']:
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self.compile_subroutine()
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self.tokenizer.advance()
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self.sym_table.pop()
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self.vmwriter.close_vm_file()
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def compile_class_var_dec(self):
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var_kind = tokenizer_main.token
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self.tokenizer.advance()
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var_type = tokenizer_main.token
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self.tokenizer.advance()
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var_name = tokenizer_main.token
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self.sym_table[-1].define(var_name, var_type, var_kind)
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self.tokenizer.advance()
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while self.tokenizer.token == ',':
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self.tokenizer.advance()
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var_name = tokenizer_main.token
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self.sym_table[-1].define(var_name, var_type, var_kind)
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self.tokenizer.advance()
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self.tokenizer.advance()
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def compile_subroutine(self):
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self.sym_table.append(SymbolTable())
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self.sub_type = self.tokenizer.token
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self.tokenizer.advance() # subroutine type(function|method|constructor) ->
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self.function_type = self.tokenizer.token
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self.tokenizer.advance() # subroutine kind(int|void|etc..) ->
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sub_name = self.tokenizer.token
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self.tokenizer.advance() # subroutine name ->
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self.tokenizer.advance() # ( ->
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if self.sub_type == 'method':
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self.sym_table[-1].start_subroutine('this', self.class_name)
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self.compile_parameter_list()
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self.tokenizer.advance() # { ->
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while self.tokenizer.token == 'var': # create only symbol teable entries
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self.compile_var_dec()
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if self.sub_type == 'constructor':
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self.vmwriter.write_function(f'{self.class_name}.{sub_name}', self.sym_table[-1].var_count('var'))
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self.vmwriter.write_push('constant', self.sym_table[-2].var_count('field'))
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self.vmwriter.write_call('Memory.alloc', 1)
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self.vmwriter.write_pop('pointer', 0)
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elif self.sub_type == 'method':
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self.vmwriter.write_function(f'{self.class_name}.{sub_name}', self.sym_table[-1].var_count('var'))
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self.vmwriter.write_push('argument', 0)
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self.vmwriter.write_pop('pointer', 0)
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else:
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self.vmwriter.write_function(f'{self.class_name}.{sub_name}', self.sym_table[-1].var_count('var'))
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while self.tokenizer.token != '}':
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self.compile_statements()
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self.tokenizer.advance()
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self.sym_table.pop()
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def compile_parameter_list(self):
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if self.tokenizer.token != ')':
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var_type = self.tokenizer.token
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self.tokenizer.advance() # var ype ->
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var_name = self.tokenizer.token
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self.sym_table[-1].define(var_name, var_type, 'argument')
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self.tokenizer.advance() # var name ->
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while self.tokenizer.token == ',':
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self.tokenizer.advance() # , ->
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var_type = self.tokenizer.token
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self.tokenizer.advance() # type ->
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var_name = self.tokenizer.token
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self.sym_table[-1].define(var_name, var_type, 'argument')
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self.tokenizer.advance() # name ->
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self.tokenizer.advance() # )->
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def compile_var_dec(self):
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var_kind = tokenizer_main.token
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self.tokenizer.advance()
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var_type = tokenizer_main.token
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self.tokenizer.advance()
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var_name = tokenizer_main.token
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self.sym_table[-1].define(var_name, var_type, var_kind)
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self.tokenizer.advance()
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while self.tokenizer.token == ',':
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self.tokenizer.advance()
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var_name = tokenizer_main.token
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self.sym_table[-1].define(var_name, var_type, var_kind)
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self.tokenizer.advance()
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self.tokenizer.advance()
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def compile_statements(self):
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while True:
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if self.tokenizer.token == 'let':
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self.compile_let()
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elif self.tokenizer.token == 'if':
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self.compile_if()
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elif self.tokenizer.token == 'while':
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self.compile_while()
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elif self.tokenizer.token == 'do':
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self.compile_do()
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elif self.tokenizer.token == 'return':
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self.compile_return()
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else:
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break
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def compile_do(self):
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self.tokenizer.advance() # do ->
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class_name = self.tokenizer.token
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self.tokenizer.advance() # name ->
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if self.tokenizer.token == '(': # method
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self.vmwriter.write_push('pointer', 0)
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self.tokenizer.advance() # ( ->
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count = self.compile_expression_list()
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self.tokenizer.advance() # ) ->
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self.vmwriter.write_call(f'{self.class_name}.{class_name}', count + 1)
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elif self.tokenizer.token == '.': # method or function
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self.tokenizer.advance() # . ->
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fname = f'{class_name}.{self.tokenizer.token}'
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sname = f'{self.search_type_of_sym(class_name)}.{self.tokenizer.token}'
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self.tokenizer.advance() # name ->
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if self.search_kind_of_sym(class_name) is not None:
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self.vmwriter.write_push(*self.search_kind_of_sym(class_name))
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self.tokenizer.advance() # ( ->
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count = self.compile_expression_list()
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self.tokenizer.advance() # ) ->
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if self.search_kind_of_sym(class_name) is not None:
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self.vmwriter.write_call(f'{sname}', count + 1)
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else:
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self.vmwriter.write_call(f'{fname}', count)
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self.vmwriter.write_pop('temp', '0')
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self.tokenizer.advance() # ; ->
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def compile_let(self):
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flag_array = 0
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self.tokenizer.advance() # let ->
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self.current_vm.append(self.tokenizer.token)
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self.tokenizer.advance() # var_name ->
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if self.tokenizer.token == '[':
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self.vmwriter.write_push(*self.search_kind_of_sym(self.current_vm[-1]))
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self.tokenizer.advance() # [ ->
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self.compile_expression()
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self.tokenizer.advance() # ] ->
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flag_array = 1
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self.tokenizer.advance() # = ->
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self.compile_expression()
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self.tokenizer.advance() # ; ->
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if flag_array == 0:
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self.vmwriter.write_pop(*self.search_kind_of_sym(self.current_vm[-1]))
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else:
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self.vmwriter.write_pop('temp', 1)
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self.vmwriter.write_arithmetic('+')
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self.vmwriter.write_pop('pointer', 1)
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self.vmwriter.write_push('temp', 1)
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self.vmwriter.write_pop('that', 0)
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self.current_vm.pop()
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def compile_while(self):
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self.tokenizer.advance() # while ->
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label1 = self.vmwriter.label_index
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self.vmwriter.write_lable(self.vmwriter.label_index)
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self.vmwriter.label_index += 1
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self.tokenizer.advance() # ( ->
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self.compile_expression()
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self.tokenizer.advance() # ) ->
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label2 = self.vmwriter.label_index
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self.vmwriter.write_if(self.vmwriter.label_index)
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self.vmwriter.label_index += 1
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self.tokenizer.advance() # { ->
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self.compile_statements()
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self.tokenizer.advance() # } ->
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self.vmwriter.write_goto(label1)
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self.vmwriter.write_lable(label2)
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def compile_return(self):
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self.tokenizer.advance() # return ->
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if self.tokenizer.token != ';':
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self.compile_expression()
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self.vmwriter.write_return(self.function_type)
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self.tokenizer.advance() # ; ->
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def compile_if(self):
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self.tokenizer.advance() # if ->
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self.tokenizer.advance() # ( ->
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self.compile_expression()
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self.tokenizer.advance() # ) ->
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label1 = self.vmwriter.label_index
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self.vmwriter.write_if(self.vmwriter.label_index)
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self.vmwriter.label_index += 1
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self.tokenizer.advance() # { ->
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self.compile_statements()
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self.tokenizer.advance() # } ->
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label2 = self.vmwriter.label_index
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self.vmwriter.write_goto(self.vmwriter.label_index)
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self.vmwriter.label_index += 1
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self.vmwriter.write_lable(label1)
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if self.tokenizer.token == 'else':
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self.tokenizer.advance() # else ->
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self.tokenizer.advance() # { ->
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self.compile_statements()
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self.tokenizer.advance() # } ->
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self.vmwriter.write_lable(label2)
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def compile_expression(self):
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self.compile_term()
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while self.tokenizer.token in ['+', '-', '*', '/', '|', '=', '>', '<', '&']:
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self.current_vm.append(self.tokenizer.token)
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self.tokenizer.advance() # symbol ->
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self.compile_term()
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self.vmwriter.write_arithmetic(self.current_vm[-1])
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self.current_vm.pop()
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def compile_term(self):
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if self.tokenizer.token == '(': # expression ()
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self.tokenizer.advance() # ( ->
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self.compile_expression()
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self.tokenizer.advance() # ) ->
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elif self.tokenizer.token in ['~', '-']: # uniry op
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self.current_vm.append(self.tokenizer.token)
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tmp = 'neg' if self.tokenizer.token == '-' else self.tokenizer.token
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self.tokenizer.advance() # ~ or - ->
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self.compile_term()
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self.vmwriter.write_arithmetic(tmp)
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self.current_vm.pop()
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elif self.tokenizer.token_type() != 'symbol':
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self.current_vm.append(self.tokenizer.token)
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self.tokenizer.advance() # integer, string, keyword, varnname, subroutine_name, class_name, var_name ->
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if self.tokenizer.token == '[': # Array
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self.tokenizer.advance() # [ ->
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self.vmwriter.write_push(*self.search_kind_of_sym(self.current_vm[-1]))
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self.current_vm.pop()
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self.compile_expression()
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self.vmwriter.write_arithmetic('+')
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self.vmwriter.write_pop('pointer', 1)
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self.vmwriter.write_push('that', 0)
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self.tokenizer.advance() # ] ->
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elif self.tokenizer.token == '(': # subroutine_name ()
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self.tokenizer.advance() # ( ->
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count = self.compile_expression_list()
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self.tokenizer.advance() # ) ->
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self.vmwriter.write_call(f'{self.class_name}.{self.current_vm[-1]}', count)
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self.current_vm.pop()
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elif self.tokenizer.token == '.': # method
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if self.search_type_of_sym(self.current_vm[-1]) is not None:
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flag = 1
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self.vmwriter.write_push(*self.search_kind_of_sym(self.current_vm[-1]))
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else:
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flag = 0
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self.tokenizer.advance() # . ->
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fname = self.tokenizer.token
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self.tokenizer.advance() # subroutine name ->
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self.tokenizer.advance() # ( ->
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count = self.compile_expression_list()
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self.tokenizer.advance() # ) ->
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if flag == 1:
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self.vmwriter.write_call(f'{self.search_type_of_sym(self.current_vm[-1])}.{fname}', count + 1)
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else:
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self.vmwriter.write_call(f'{self.current_vm[-1]}.{fname}', count)
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self.current_vm.pop()
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elif self.tokenizer.token_type(self.current_vm[-1]) == 'stringConstant':
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self.vmwriter.write_push('constant', len(self.current_vm[-1].strip('"')))
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self.vmwriter.write_call('String.new', 1)
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for index, item in enumerate(self.current_vm[-1].strip('"')):
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self.vmwriter.write_push('constant', ord(item))
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self.vmwriter.write_call('String.appendChar', 2)
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self.current_vm.pop()
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elif self.tokenizer.token_type(self.current_vm[-1]) == 'integerConstant':
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self.vmwriter.write_push('constant', self.current_vm[-1])
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self.current_vm.pop()
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elif self.tokenizer.token_type(self.current_vm[-1]) == 'identifier':
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self.vmwriter.write_push(*self.search_kind_of_sym(self.current_vm[-1]))
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self.current_vm.pop()
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elif self.current_vm[-1] == 'true':
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self.vmwriter.write_push('constant', '1')
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self.vmwriter.write_arithmetic('neg')
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self.current_vm.pop()
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elif self.current_vm[-1] == 'false' or self.current_vm[-1] == 'null':
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self.vmwriter.write_push('constant', '0')
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self.current_vm.pop()
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elif self.current_vm[-1] == 'this':
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self.vmwriter.write_push('pointer', '0')
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self.current_vm.pop()
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elif self.current_vm[-1] == 'that':
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self.vmwriter.write_push('pointer', '1')
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self.current_vm.pop()
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def compile_expression_list(self):
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count_exp = 0
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if self.tokenizer.token in ['(', '~', '-'] or self.tokenizer.token_type() != 'symbol':
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count_exp += 1
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self.compile_expression()
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while self.tokenizer.token == ',':
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count_exp += 1
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self.tokenizer.advance() # ,
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self.compile_expression()
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return count_exp
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if __name__ == '__main__':
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path = os.getcwd()
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for root, dirs, files in os.walk(path, topdown=False):
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for name in files:
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if name[-4:] == 'jack':
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tokenizer_main = Tokenizer()
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tokenizer_main.clear_file(Path(root, name))
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full_path = Path(root, name[:-4] + 'vm')
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comp_eng_main = CompilationEngine(tokenizer_main, full_path)
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comp_eng_main.compile_class()
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Executable
+83
@@ -0,0 +1,83 @@
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// This file is part of www.nand2tetris.org
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// and the book "The Elements of Computing Systems"
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// by Nisan and Schocken, MIT Press.
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// File name: projects/12/StringTest/Main.jack
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/** Test program for the OS String class. */
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class Main {
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/** Performs various string manipulations and displays their results. */
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function void main() {
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var String s;
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var String i;
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let s = String.new(0); // a zero-capacity string should be supported
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do s.dispose();
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let s = String.new(6); // capacity 6, make sure that length 5 is displayed
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let s = s.appendChar(97);
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let s = s.appendChar(98);
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let s = s.appendChar(99);
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let s = s.appendChar(100);
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let s = s.appendChar(101);
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do Output.printString("new: ");
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do Output.printString(s); // new, appendChar: abcde
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do Output.println();
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let i = String.new(6);
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do i.setInt(12345);
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do Output.printString("setInt: ");
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do Output.printString(i); // setInt: 12345
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do Output.println();
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do i.setInt(-32767);
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do Output.printString("setInt: ");
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do Output.printString(i); // setInt: -32767
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do Output.println();
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do Output.printString("length: ");
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do Output.printInt(s.length()); // length: 5
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do Output.println();
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do Output.printString("charAt[2]: ");
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do Output.printInt(s.charAt(2)); // charAt[2]: 99
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do Output.println();
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do s.setCharAt(2, 45);
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do Output.printString("setCharAt(2,'-'): ");
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do Output.printString(s); // setCharAt(2,'-'): ab-de
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do Output.println();
|
||||
|
||||
do s.eraseLastChar();
|
||||
do Output.printString("eraseLastChar: ");
|
||||
do Output.printString(s); // eraseLastChar: ab-d
|
||||
do Output.println();
|
||||
|
||||
let s = "456";
|
||||
do Output.printString("intValue: ");
|
||||
do Output.printInt(s.intValue()); // intValue: 456
|
||||
do Output.println();
|
||||
|
||||
let s = "-32123";
|
||||
do Output.printString("intValue: ");
|
||||
do Output.printInt(s.intValue()); // intValue: -32123
|
||||
do Output.println();
|
||||
|
||||
do Output.printString("backSpace: ");
|
||||
do Output.printInt(String.backSpace()); // backSpace: 129
|
||||
do Output.println();
|
||||
|
||||
do Output.printString("doubleQuote: ");
|
||||
do Output.printInt(String.doubleQuote());// doubleQuote: 34
|
||||
do Output.println();
|
||||
|
||||
do Output.printString("newLine: ");
|
||||
do Output.printInt(String.newLine()); // newLine: 128
|
||||
do Output.println();
|
||||
|
||||
do i.dispose();
|
||||
do s.dispose();
|
||||
|
||||
return;
|
||||
}
|
||||
}
|
||||
Executable
+447
@@ -0,0 +1,447 @@
|
||||
function Main.main 2
|
||||
push constant 0
|
||||
call String.new 1
|
||||
pop local 0
|
||||
push local 0
|
||||
call String.dispose 1
|
||||
pop temp 0
|
||||
push constant 6
|
||||
call String.new 1
|
||||
pop local 0
|
||||
push local 0
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
pop local 0
|
||||
push local 0
|
||||
push constant 98
|
||||
call String.appendChar 2
|
||||
pop local 0
|
||||
push local 0
|
||||
push constant 99
|
||||
call String.appendChar 2
|
||||
pop local 0
|
||||
push local 0
|
||||
push constant 100
|
||||
call String.appendChar 2
|
||||
pop local 0
|
||||
push local 0
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
pop local 0
|
||||
push constant 5
|
||||
call String.new 1
|
||||
push constant 110
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 119
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
push local 0
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push constant 6
|
||||
call String.new 1
|
||||
pop local 1
|
||||
push local 1
|
||||
push constant 12345
|
||||
call String.setInt 2
|
||||
pop temp 0
|
||||
push constant 8
|
||||
call String.new 1
|
||||
push constant 115
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 73
|
||||
call String.appendChar 2
|
||||
push constant 110
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
push local 1
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push local 1
|
||||
push constant 32767
|
||||
neg
|
||||
call String.setInt 2
|
||||
pop temp 0
|
||||
push constant 8
|
||||
call String.new 1
|
||||
push constant 115
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 73
|
||||
call String.appendChar 2
|
||||
push constant 110
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
push local 1
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push constant 8
|
||||
call String.new 1
|
||||
push constant 108
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 110
|
||||
call String.appendChar 2
|
||||
push constant 103
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 104
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
push local 0
|
||||
call String.length 1
|
||||
call Output.printInt 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push constant 11
|
||||
call String.new 1
|
||||
push constant 99
|
||||
call String.appendChar 2
|
||||
push constant 104
|
||||
call String.appendChar 2
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
push constant 114
|
||||
call String.appendChar 2
|
||||
push constant 65
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 91
|
||||
call String.appendChar 2
|
||||
push constant 50
|
||||
call String.appendChar 2
|
||||
push constant 93
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
push local 0
|
||||
push constant 2
|
||||
call String.charAt 2
|
||||
call Output.printInt 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push local 0
|
||||
push constant 2
|
||||
push constant 45
|
||||
call String.setCharAt 3
|
||||
pop temp 0
|
||||
push constant 18
|
||||
call String.new 1
|
||||
push constant 115
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 67
|
||||
call String.appendChar 2
|
||||
push constant 104
|
||||
call String.appendChar 2
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
push constant 114
|
||||
call String.appendChar 2
|
||||
push constant 65
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 40
|
||||
call String.appendChar 2
|
||||
push constant 50
|
||||
call String.appendChar 2
|
||||
push constant 44
|
||||
call String.appendChar 2
|
||||
push constant 39
|
||||
call String.appendChar 2
|
||||
push constant 45
|
||||
call String.appendChar 2
|
||||
push constant 39
|
||||
call String.appendChar 2
|
||||
push constant 41
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
push local 0
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push local 0
|
||||
call String.eraseLastChar 1
|
||||
pop temp 0
|
||||
push constant 15
|
||||
call String.new 1
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 114
|
||||
call String.appendChar 2
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
push constant 115
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 76
|
||||
call String.appendChar 2
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
push constant 115
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 67
|
||||
call String.appendChar 2
|
||||
push constant 104
|
||||
call String.appendChar 2
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
push constant 114
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
push local 0
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push constant 3
|
||||
call String.new 1
|
||||
push constant 52
|
||||
call String.appendChar 2
|
||||
push constant 53
|
||||
call String.appendChar 2
|
||||
push constant 54
|
||||
call String.appendChar 2
|
||||
pop local 0
|
||||
push constant 10
|
||||
call String.new 1
|
||||
push constant 105
|
||||
call String.appendChar 2
|
||||
push constant 110
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 86
|
||||
call String.appendChar 2
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
push constant 108
|
||||
call String.appendChar 2
|
||||
push constant 117
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
push local 0
|
||||
call String.intValue 1
|
||||
call Output.printInt 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push constant 6
|
||||
call String.new 1
|
||||
push constant 45
|
||||
call String.appendChar 2
|
||||
push constant 51
|
||||
call String.appendChar 2
|
||||
push constant 50
|
||||
call String.appendChar 2
|
||||
push constant 49
|
||||
call String.appendChar 2
|
||||
push constant 50
|
||||
call String.appendChar 2
|
||||
push constant 51
|
||||
call String.appendChar 2
|
||||
pop local 0
|
||||
push constant 10
|
||||
call String.new 1
|
||||
push constant 105
|
||||
call String.appendChar 2
|
||||
push constant 110
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 86
|
||||
call String.appendChar 2
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
push constant 108
|
||||
call String.appendChar 2
|
||||
push constant 117
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
push local 0
|
||||
call String.intValue 1
|
||||
call Output.printInt 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push constant 11
|
||||
call String.new 1
|
||||
push constant 98
|
||||
call String.appendChar 2
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
push constant 99
|
||||
call String.appendChar 2
|
||||
push constant 107
|
||||
call String.appendChar 2
|
||||
push constant 83
|
||||
call String.appendChar 2
|
||||
push constant 112
|
||||
call String.appendChar 2
|
||||
push constant 97
|
||||
call String.appendChar 2
|
||||
push constant 99
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
call String.backSpace 0
|
||||
call Output.printInt 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push constant 13
|
||||
call String.new 1
|
||||
push constant 100
|
||||
call String.appendChar 2
|
||||
push constant 111
|
||||
call String.appendChar 2
|
||||
push constant 117
|
||||
call String.appendChar 2
|
||||
push constant 98
|
||||
call String.appendChar 2
|
||||
push constant 108
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 81
|
||||
call String.appendChar 2
|
||||
push constant 117
|
||||
call String.appendChar 2
|
||||
push constant 111
|
||||
call String.appendChar 2
|
||||
push constant 116
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
call String.doubleQuote 0
|
||||
call Output.printInt 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push constant 9
|
||||
call String.new 1
|
||||
push constant 110
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 119
|
||||
call String.appendChar 2
|
||||
push constant 76
|
||||
call String.appendChar 2
|
||||
push constant 105
|
||||
call String.appendChar 2
|
||||
push constant 110
|
||||
call String.appendChar 2
|
||||
push constant 101
|
||||
call String.appendChar 2
|
||||
push constant 58
|
||||
call String.appendChar 2
|
||||
push constant 32
|
||||
call String.appendChar 2
|
||||
call Output.printString 1
|
||||
pop temp 0
|
||||
call String.newLine 0
|
||||
call Output.printInt 1
|
||||
pop temp 0
|
||||
call Output.println 0
|
||||
pop temp 0
|
||||
push local 1
|
||||
call String.dispose 1
|
||||
pop temp 0
|
||||
push local 0
|
||||
call String.dispose 1
|
||||
pop temp 0
|
||||
push constant 0
|
||||
return
|
||||
Executable
+147
@@ -0,0 +1,147 @@
|
||||
// This file is part of www.nand2tetris.org
|
||||
// and the book "The Elements of Computing Systems"
|
||||
// by Nisan and Schocken, MIT Press.
|
||||
// File name: projects/12/String.jack
|
||||
|
||||
/**
|
||||
* Represents character strings. In addition for constructing and disposing
|
||||
* strings, the class features methods for getting and setting individual
|
||||
* characters of the string, for erasing the string's last character,
|
||||
* for appending a character to the string's end, and more typical
|
||||
* string-oriented operations.
|
||||
*/
|
||||
class String {
|
||||
field Array str;
|
||||
field int length;
|
||||
static bool neg;
|
||||
|
||||
/** constructs a new empty string with a maximum length of maxLength
|
||||
* and initial length of 0. */
|
||||
constructor String new(int maxLength) {
|
||||
if (maxLength > 0){
|
||||
let str = Array.new(maxLength);
|
||||
}
|
||||
let length = 0;
|
||||
return this;
|
||||
}
|
||||
|
||||
/** Disposes this string. */
|
||||
method void dispose() {
|
||||
if(length > 0){
|
||||
do str.dispose();
|
||||
}
|
||||
do Memory.deAlloc(this);
|
||||
return;
|
||||
}
|
||||
|
||||
/** Returns the current length of this string. */
|
||||
method int length() {
|
||||
return length;
|
||||
}
|
||||
|
||||
/** Returns the character at the j-th location of this string. */
|
||||
method char charAt(int j) {
|
||||
if(j > length){
|
||||
do Sys.error(7);
|
||||
}
|
||||
return str[j];
|
||||
}
|
||||
|
||||
/** Sets the character at the j-th location of this string to c. */
|
||||
method void setCharAt(int j, char c) {
|
||||
if(j > length){
|
||||
do Sys.error(7);
|
||||
}
|
||||
let str[j] = c;
|
||||
return;
|
||||
}
|
||||
|
||||
/** Appends c to this string's end and returns this string. */
|
||||
method String appendChar(char c) {
|
||||
let str[length] = c;
|
||||
let length = length + 1;
|
||||
return this;
|
||||
}
|
||||
|
||||
/** Erases the last character from this string. */
|
||||
method void eraseLastChar() {
|
||||
let str[length] = 0;
|
||||
let length = length - 1;
|
||||
return;
|
||||
}
|
||||
|
||||
/** Returns the integer value of this string,
|
||||
* until a non-digit character is detected. */
|
||||
method int intValue() {
|
||||
var int d, sum, i;
|
||||
var bool f;
|
||||
while(i < length){
|
||||
let d = str[i]; // kak da go zavyrtq v realen int
|
||||
if ((d > 47) & (d < 58)){
|
||||
let sum = (sum * 10) + (d - 48);
|
||||
}
|
||||
else{
|
||||
if((i = 0) & (d = 45)){
|
||||
let f = true;
|
||||
}
|
||||
else{
|
||||
let i = length;
|
||||
}
|
||||
}
|
||||
let i = i + 1;
|
||||
}
|
||||
if (f){
|
||||
return -sum;
|
||||
}
|
||||
return sum;
|
||||
}
|
||||
|
||||
/** Sets this string to hold a representation of the given value. */
|
||||
method void setInt(int val) {
|
||||
var int lastDigit, a, i;
|
||||
var char c;
|
||||
if(val < 0){
|
||||
let neg = true;
|
||||
let val = -val;
|
||||
}
|
||||
let a = val / 10;
|
||||
let lastDigit = val - (a * 10);
|
||||
let i = 48;
|
||||
while (i < 58){
|
||||
if (i = (48 + lastDigit)){
|
||||
let c = i;
|
||||
let i = 59;
|
||||
}
|
||||
let i = i + 1;
|
||||
}
|
||||
if (val < 10){
|
||||
let length = 0;
|
||||
if (neg){
|
||||
let neg = false;
|
||||
do this.appendChar("-");
|
||||
}
|
||||
do this.appendChar(c);
|
||||
return;
|
||||
}
|
||||
else{
|
||||
do this.setInt(a);
|
||||
do this.appendChar(c);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
/** Returns the new line character. */
|
||||
function char newLine() {
|
||||
return 128;
|
||||
}
|
||||
|
||||
/** Returns the backspace character. */
|
||||
function char backSpace() {
|
||||
return 129;
|
||||
}
|
||||
|
||||
/** Returns the double quote (") character. */
|
||||
function char doubleQuote() {
|
||||
return 34;
|
||||
}
|
||||
}
|
||||
Executable
+295
@@ -0,0 +1,295 @@
|
||||
function String.new 0
|
||||
push constant 2
|
||||
call Memory.alloc 1
|
||||
pop pointer 0
|
||||
push argument 0
|
||||
push constant 0
|
||||
gt
|
||||
not
|
||||
if-goto L0
|
||||
push argument 0
|
||||
call Array.new 1
|
||||
pop this 0
|
||||
goto L1
|
||||
label L0
|
||||
label L1
|
||||
push constant 0
|
||||
pop this 1
|
||||
push pointer 0
|
||||
return
|
||||
function String.dispose 0
|
||||
push argument 0
|
||||
pop pointer 0
|
||||
push this 1
|
||||
push constant 0
|
||||
gt
|
||||
not
|
||||
if-goto L2
|
||||
push this 0
|
||||
call Array.dispose 1
|
||||
pop temp 0
|
||||
goto L3
|
||||
label L2
|
||||
label L3
|
||||
push pointer 0
|
||||
call Memory.deAlloc 1
|
||||
pop temp 0
|
||||
push constant 0
|
||||
return
|
||||
function String.length 0
|
||||
push argument 0
|
||||
pop pointer 0
|
||||
push this 1
|
||||
return
|
||||
function String.charAt 0
|
||||
push argument 0
|
||||
pop pointer 0
|
||||
push argument 1
|
||||
push this 1
|
||||
gt
|
||||
not
|
||||
if-goto L4
|
||||
push constant 7
|
||||
call Sys.error 1
|
||||
pop temp 0
|
||||
goto L5
|
||||
label L4
|
||||
label L5
|
||||
push this 0
|
||||
push argument 1
|
||||
add
|
||||
pop pointer 1
|
||||
push that 0
|
||||
return
|
||||
function String.setCharAt 0
|
||||
push argument 0
|
||||
pop pointer 0
|
||||
push argument 1
|
||||
push this 1
|
||||
gt
|
||||
not
|
||||
if-goto L6
|
||||
push constant 7
|
||||
call Sys.error 1
|
||||
pop temp 0
|
||||
goto L7
|
||||
label L6
|
||||
label L7
|
||||
push this 0
|
||||
push argument 1
|
||||
push argument 2
|
||||
pop temp 1
|
||||
add
|
||||
pop pointer 1
|
||||
push temp 1
|
||||
pop that 0
|
||||
push constant 0
|
||||
return
|
||||
function String.appendChar 0
|
||||
push argument 0
|
||||
pop pointer 0
|
||||
push this 0
|
||||
push this 1
|
||||
push argument 1
|
||||
pop temp 1
|
||||
add
|
||||
pop pointer 1
|
||||
push temp 1
|
||||
pop that 0
|
||||
push this 1
|
||||
push constant 1
|
||||
add
|
||||
pop this 1
|
||||
push pointer 0
|
||||
return
|
||||
function String.eraseLastChar 0
|
||||
push argument 0
|
||||
pop pointer 0
|
||||
push this 0
|
||||
push this 1
|
||||
push constant 0
|
||||
pop temp 1
|
||||
add
|
||||
pop pointer 1
|
||||
push temp 1
|
||||
pop that 0
|
||||
push this 1
|
||||
push constant 1
|
||||
sub
|
||||
pop this 1
|
||||
push constant 0
|
||||
return
|
||||
function String.intValue 4
|
||||
push argument 0
|
||||
pop pointer 0
|
||||
label L8
|
||||
push local 2
|
||||
push this 1
|
||||
lt
|
||||
not
|
||||
if-goto L9
|
||||
push this 0
|
||||
push local 2
|
||||
add
|
||||
pop pointer 1
|
||||
push that 0
|
||||
pop local 0
|
||||
push local 0
|
||||
push constant 47
|
||||
gt
|
||||
push local 0
|
||||
push constant 58
|
||||
lt
|
||||
and
|
||||
not
|
||||
if-goto L10
|
||||
push local 1
|
||||
push constant 10
|
||||
call Math.multiply 2
|
||||
push local 0
|
||||
push constant 48
|
||||
sub
|
||||
add
|
||||
pop local 1
|
||||
goto L11
|
||||
label L10
|
||||
push local 2
|
||||
push constant 0
|
||||
eq
|
||||
push local 0
|
||||
push constant 45
|
||||
eq
|
||||
and
|
||||
not
|
||||
if-goto L12
|
||||
push constant 1
|
||||
neg
|
||||
pop local 3
|
||||
goto L13
|
||||
label L12
|
||||
push this 1
|
||||
pop local 2
|
||||
label L13
|
||||
label L11
|
||||
push local 2
|
||||
push constant 1
|
||||
add
|
||||
pop local 2
|
||||
goto L8
|
||||
label L9
|
||||
push local 3
|
||||
not
|
||||
if-goto L14
|
||||
push local 1
|
||||
neg
|
||||
return
|
||||
goto L15
|
||||
label L14
|
||||
label L15
|
||||
push local 1
|
||||
return
|
||||
function String.setInt 4
|
||||
push argument 0
|
||||
pop pointer 0
|
||||
push argument 1
|
||||
push constant 0
|
||||
lt
|
||||
not
|
||||
if-goto L16
|
||||
push constant 1
|
||||
neg
|
||||
pop static 0
|
||||
push argument 1
|
||||
neg
|
||||
pop argument 1
|
||||
goto L17
|
||||
label L16
|
||||
label L17
|
||||
push argument 1
|
||||
push constant 10
|
||||
call Math.divide 2
|
||||
pop local 1
|
||||
push argument 1
|
||||
push local 1
|
||||
push constant 10
|
||||
call Math.multiply 2
|
||||
sub
|
||||
pop local 0
|
||||
push constant 48
|
||||
pop local 2
|
||||
label L18
|
||||
push local 2
|
||||
push constant 58
|
||||
lt
|
||||
not
|
||||
if-goto L19
|
||||
push local 2
|
||||
push constant 48
|
||||
push local 0
|
||||
add
|
||||
eq
|
||||
not
|
||||
if-goto L20
|
||||
push local 2
|
||||
pop local 3
|
||||
push constant 59
|
||||
pop local 2
|
||||
goto L21
|
||||
label L20
|
||||
label L21
|
||||
push local 2
|
||||
push constant 1
|
||||
add
|
||||
pop local 2
|
||||
goto L18
|
||||
label L19
|
||||
push argument 1
|
||||
push constant 10
|
||||
lt
|
||||
not
|
||||
if-goto L22
|
||||
push constant 0
|
||||
pop this 1
|
||||
push static 0
|
||||
not
|
||||
if-goto L23
|
||||
push constant 0
|
||||
pop static 0
|
||||
push argument 0
|
||||
push constant 1
|
||||
call String.new 1
|
||||
push constant 45
|
||||
call String.appendChar 2
|
||||
call String.appendChar 2
|
||||
pop temp 0
|
||||
goto L24
|
||||
label L23
|
||||
label L24
|
||||
push argument 0
|
||||
push local 3
|
||||
call String.appendChar 2
|
||||
pop temp 0
|
||||
push constant 0
|
||||
return
|
||||
goto L25
|
||||
label L22
|
||||
push argument 0
|
||||
push local 1
|
||||
call String.setInt 2
|
||||
pop temp 0
|
||||
push argument 0
|
||||
push local 3
|
||||
call String.appendChar 2
|
||||
pop temp 0
|
||||
label L25
|
||||
push constant 0
|
||||
return
|
||||
function String.newLine 0
|
||||
push constant 128
|
||||
return
|
||||
function String.backSpace 0
|
||||
push constant 129
|
||||
return
|
||||
function String.doubleQuote 0
|
||||
push constant 34
|
||||
return
|
||||
Executable
BIN
Binary file not shown.
|
After Width: | Height: | Size: 7.9 KiB |
Binary file not shown.
Binary file not shown.
Binary file not shown.
Executable
+62
@@ -0,0 +1,62 @@
|
||||
class Symbol:
|
||||
def __init__(self):
|
||||
self.s_name = ''
|
||||
self.s_kind = ''
|
||||
self.s_type = ''
|
||||
self.s_index = 0
|
||||
|
||||
|
||||
class SymbolTable:
|
||||
def __init__(self):
|
||||
self.sym = []
|
||||
|
||||
def define(self, s_name, s_type, s_kind):
|
||||
self.sym.append(Symbol())
|
||||
self.sym[-1].s_name = s_name
|
||||
self.sym[-1].s_type = s_type
|
||||
self.sym[-1].s_kind = s_kind
|
||||
self.sym[-1].s_index = self.var_count(s_kind) - 1
|
||||
|
||||
def start_subroutine(self, s_name, s_type):
|
||||
self.sym.append(Symbol())
|
||||
self.sym[-1].s_name = s_name
|
||||
self.sym[-1].s_type = s_type
|
||||
self.sym[-1].s_kind = 'argument'
|
||||
self.sym[-1].s_index = 0
|
||||
|
||||
def start_class(self, s_name, s_type):
|
||||
self.sym.append(Symbol())
|
||||
self.sym[-1].s_name = 'this'
|
||||
self.sym[-1].s_type = s_type
|
||||
self.sym[-1].s_kind = 'field'
|
||||
self.sym[-1].s_index = 0
|
||||
|
||||
def var_count(self, s_kind):
|
||||
count = 0 # it is -1 so the first index is 0
|
||||
for i in self.sym:
|
||||
if i.s_kind == s_kind:
|
||||
count += 1
|
||||
return count
|
||||
|
||||
def kind_of(self, s_name):
|
||||
for i in self.sym:
|
||||
if i.s_name == s_name:
|
||||
if i.s_kind == 'var':
|
||||
return 'local'
|
||||
elif i.s_kind == 'field':
|
||||
return 'this'
|
||||
else:
|
||||
return i.s_kind
|
||||
return None
|
||||
|
||||
def type_of(self, s_name):
|
||||
for i in self.sym:
|
||||
if i.s_name == s_name:
|
||||
return i.s_type
|
||||
return None
|
||||
|
||||
def index_of(self, s_name):
|
||||
for i in self.sym:
|
||||
if i.s_name == s_name:
|
||||
return i.s_index
|
||||
return None
|
||||
Executable
+78
@@ -0,0 +1,78 @@
|
||||
import re
|
||||
|
||||
|
||||
class Tokenizer:
|
||||
|
||||
def __init__(self):
|
||||
self.i = 0
|
||||
self.file = ''
|
||||
self.symbols = ('(', ')', '[', ']', '}', '{', '>', '<', '=', '*', '+', '-', '/', '.', ';', ',', '&', '|',
|
||||
'~')
|
||||
self.key_word = (
|
||||
'class', 'method', 'function', 'constructor', 'int', 'boolean', 'char', 'void', 'var', 'static', 'field',
|
||||
'let', 'do', 'if', 'else', 'while', 'return', 'true', 'false', 'null', 'this')
|
||||
self.token = ''
|
||||
|
||||
def token_type(self, token=None):
|
||||
if token is None:
|
||||
token = self.token
|
||||
if token is None or token == '':
|
||||
return None
|
||||
if token in self.key_word:
|
||||
return 'keyword'
|
||||
elif token[0] == '"':
|
||||
return 'stringConstant'
|
||||
elif re.match(r"\d+", token):
|
||||
return 'integerConstant'
|
||||
elif token in self.symbols:
|
||||
return 'symbol'
|
||||
else:
|
||||
return 'identifier'
|
||||
|
||||
def advance(self):
|
||||
token = ''
|
||||
i = self.i
|
||||
while i < len(self.file):
|
||||
if re.match(r'\s', self.file[i]):
|
||||
i = i + 1
|
||||
continue
|
||||
else:
|
||||
if self.file[i] in self.symbols:
|
||||
self.token = self.file[i]
|
||||
self.i = i + 1
|
||||
return
|
||||
elif self.file[i] == '"':
|
||||
i += 1
|
||||
while self.file[i] != '"':
|
||||
token += self.file[i]
|
||||
i += 1
|
||||
self.i = i + 1
|
||||
self.token = '"' + token + '"'
|
||||
return
|
||||
else:
|
||||
while re.match(r'\w', self.file[i]):
|
||||
token += self.file[i]
|
||||
if i + 1 > len(self.file) - 1:
|
||||
break
|
||||
i += 1
|
||||
self.i = i
|
||||
self.token = token
|
||||
return
|
||||
|
||||
def clear_file(self, directory):
|
||||
with open(directory, "r") as my_file:
|
||||
txt = my_file.read()
|
||||
txt = re.sub(r"//.*", "", txt)
|
||||
txt = re.sub(r"/[*][*].*[*]/", "", txt)
|
||||
i = 0
|
||||
# TODO this should be a regex
|
||||
while i < len(txt):
|
||||
if txt[i] == '/' and txt[i + 1] == '*' and txt[i + 2] == '*':
|
||||
start = i
|
||||
while txt[i] != '*' or txt[i + 1] != '/':
|
||||
i += 1
|
||||
stop = i + 2
|
||||
txt = txt[:start] + txt[stop:len(txt)]
|
||||
i = start - 1
|
||||
i += 1
|
||||
self.file = txt
|
||||
Executable
+75
@@ -0,0 +1,75 @@
|
||||
class VMWriter:
|
||||
def __init__(self, vm_path):
|
||||
self.my_vm = open(vm_path, "w+")
|
||||
self.label_index = 0
|
||||
|
||||
def write_push(self, segment, index):
|
||||
self.my_vm.write(f'push {segment} {index}\n')
|
||||
print(f'push {segment} {index}')
|
||||
|
||||
def write_lable(self, label):
|
||||
self.my_vm.write(f'label L{label}\n')
|
||||
print(f'label L{label}')
|
||||
|
||||
def write_arithmetic(self, command):
|
||||
if command == '+':
|
||||
self.my_vm.write('add\n')
|
||||
print('add')
|
||||
elif command == '-':
|
||||
self.my_vm.write('sub\n')
|
||||
print('sub')
|
||||
elif command == 'neg':
|
||||
self.my_vm.write('neg\n')
|
||||
print('neg')
|
||||
elif command == '=':
|
||||
self.my_vm.write('eq\n')
|
||||
print('eq')
|
||||
elif command == '>':
|
||||
self.my_vm.write('gt\n')
|
||||
print('gt')
|
||||
elif command == '<':
|
||||
self.my_vm.write('lt\n')
|
||||
print('lt')
|
||||
elif command == '&':
|
||||
self.my_vm.write('and\n')
|
||||
print('and')
|
||||
elif command == '|':
|
||||
self.my_vm.write('or\n')
|
||||
print('or')
|
||||
elif command == '~':
|
||||
self.my_vm.write('not\n')
|
||||
print('not')
|
||||
elif command == '*':
|
||||
self.write_call('Math.multiply', 2)
|
||||
elif command == '/':
|
||||
self.write_call('Math.divide', 2)
|
||||
|
||||
def write_pop(self, segment, index):
|
||||
print(f'pop {segment} {index}')
|
||||
self.my_vm.write(f'pop {segment} {index}\n')
|
||||
|
||||
def write_goto(self, label):
|
||||
self.my_vm.write(f'goto L{label}\n')
|
||||
print(f'goto L{label}')
|
||||
|
||||
def write_if(self, label):
|
||||
self.write_arithmetic('~')
|
||||
self.my_vm.write(f'if-goto L{label}\n')
|
||||
print(f'if-goto L{label}')
|
||||
|
||||
def write_call(self, label, num_args):
|
||||
self.my_vm.write(f'call {label} {num_args}\n')
|
||||
print(f'call {label} {num_args}')
|
||||
|
||||
def write_function(self, label, num_locals):
|
||||
self.my_vm.write(f'function {label} {num_locals}\n')
|
||||
print(f'function {label} {num_locals}')
|
||||
|
||||
def write_return(self, func_type):
|
||||
if func_type == 'void':
|
||||
self.write_push('constant', '0')
|
||||
self.my_vm.write('return\n')
|
||||
print(f'return')
|
||||
|
||||
def close_vm_file(self):
|
||||
self.my_vm.close()
|
||||
Reference in New Issue
Block a user