def parse(self,c):
c.pushcode(code.push_int(0))
c.pushcode(code.variable("arg"))
c.pushcode(code.argument())
while (self.t.checkNext()):
self.Statement(c)
return 0
def Statement(self,c):
n = self.t.checkNext()
if (n == ";"):
self.t.getNext()
return
elif (n == "{"):
self.t.getNext()
self.ParseBlock(c)
return
elif (n == "identifier"):
self.t.getNext()
if self.t.data == "if":
self.ParseIf(c)
return
elif self.t.data == "for":
self.ParseFor(c)
return
else:
name = self.t.data
if self.t.checkNext() == "(":
self.t.getNext()
arg = variable.variable()
if self.t.checkNext() == ")":
self.t.getNext()
arg.pushcode(code.push_null())
else:
self.Expression(arg, ")")
if self.t.checkNext() == "{":
self.t.getNext()
arg.pushcode(code.argument())
self.ParseBlock(arg)
c.index(name).assignment(arg)
return
c.pushcode(code.pop())
c.pushcode(code.variable(name))
c.x.code.c += arg.x.code.c
c.pushcode(code.call())
else:
c.pushcode(code.pop())
c.pushcode(code.variable(name))
self.getSuff(c)
self.Expression(c, ";", True)
return
c.pushcode(code.pop())
self.Expression(c, ";")
def getterm(self,c):
n = self.t.checkNext()
if (n == "("):
self.t.getNext()
self.Expression(c, ")")
elif (n == "-"):
self.t.getNext()
c.pushcode(code.minus())
self.getterm(c)
elif (n == "int"):
self.t.getNext()
c.pushcode(code.push_int(self.t.data))
self.getSuff(c)
elif (n == "string"):
self.t.getNext()
c.pushcode(code.push_string(self.t.data))
self.getSuff(c)
elif (n == "identifier"):
self.t.getNext()
c.pushcode(code.variable(self.t.data))
self.getSuff(c)
else:
self.error("error!")
self.t.getNext()
