def translate_while(cls, node):
go_line = cls.lineCount + 1
false_go = Quaternion(Quaternion.GO, cls.translate_exp(node.get_left()))
cls.codes.append(false_go)
cls.lineCount += 1
cls.codes.append(Quaternion(Quaternion.IN))
cls.lineCount += 1
cls.scope_level += 1
cls.translate_switch(node.get_middle())
cls.symbol_table.pop(cls.scope_level)
cls.scope_level -= 1
cls.codes.append(Quaternion(Quaternion.OUT))
cls.lineCount += 1
cls.codes.append(Quaternion(Quaternion.GO, None, None, go_line))
cls.lineCount += 1
false_go.set_forth(cls.lineCount + 1)
def translate_while(cls, node):
go_line = cls.lineCount + 1
false_go = Quaternion(Quaternion.GO,
cls.translate_exp(node.get_left()))
cls.codes.append(false_go)
cls.lineCount += 1
cls.codes.append(Quaternion(Quaternion.IN))
cls.lineCount += 1
cls.scope_level += 1
cls.translate_switch(node.get_middle())
cls.symbol_table.pop(cls.scope_level)
cls.scope_level -= 1
cls.codes.append(Quaternion(Quaternion.OUT))
cls.lineCount += 1
cls.codes.append(Quaternion(Quaternion.GO, None, None, go_line))
cls.lineCount += 1
false_go.set_forth(cls.lineCount + 1)
def translate_if(cls, node):
false_go = Quaternion(Quaternion.GO, cls.translate_exp(node.get_left()))
cls.codes.append(false_go)
cls.lineCount += 1
cls.codes.append(Quaternion(Quaternion.IN))
# 进入语句块
cls.lineCount += 1
# 代码层级加一
cls.scope_level += 1
# 处理这一层级
cls.translate_switch(node.get_middle())
# 清除局部变量
cls.symbol_table.pop(cls.scope_level)
# 代码层级恢复
cls.scope_level -= 1
cls.codes.append(Quaternion(Quaternion.OUT))
cls.lineCount += 1
# 判断else部分子节点是否存在
if node.get_right() is not None:
out_go = Quaternion(Quaternion.GO)
cls.codes.append(out_go)
cls.lineCount += 1
false_go.set_forth(str(cls.lineCount+1))
cls.codes.append(Quaternion(Quaternion.IN))
cls.lineCount += 1
cls.scope_level += 1
cls.translate_switch(node.get_right())
cls.symbol_table.pop(cls.scope_level)
cls.scope_level -= 1
cls.codes.append(Quaternion(Quaternion.OUT))
cls.lineCount += 1
out_go.set_forth(str(cls.lineCount+1))
else:
false_go.set_forth(str(cls.lineCount+1))
def translate_if(cls, node):
false_go = Quaternion(Quaternion.GO,
cls.translate_exp(node.get_left()))
cls.codes.append(false_go)
cls.lineCount += 1
cls.codes.append(Quaternion(Quaternion.IN))
# 进入语句块
cls.lineCount += 1
# 代码层级加一
cls.scope_level += 1
# 处理这一层级
cls.translate_switch(node.get_middle())
# 清除局部变量
cls.symbol_table.pop(cls.scope_level)
# 代码层级恢复
cls.scope_level -= 1
cls.codes.append(Quaternion(Quaternion.OUT))
cls.lineCount += 1
# 判断else部分子节点是否存在
if node.get_right() is not None:
out_go = Quaternion(Quaternion.GO)
cls.codes.append(out_go)
cls.lineCount += 1
false_go.set_forth(str(cls.lineCount + 1))
cls.codes.append(Quaternion(Quaternion.IN))
cls.lineCount += 1
cls.scope_level += 1
cls.translate_switch(node.get_right())
cls.symbol_table.pop(cls.scope_level)
cls.scope_level -= 1
cls.codes.append(Quaternion(Quaternion.OUT))
cls.lineCount += 1
out_go.set_forth(str(cls.lineCount + 1))
else:
false_go.set_forth(str(cls.lineCount + 1))
