def visitExpression1(self, ctx:MPParser.Expression1Context):
if(ctx.getChildCount() == 3):
if ctx.EQ():
return BinaryOp("=",self.visit(ctx.simpleExpression1(0)),self.visit(ctx.simpleExpression1(1)))
elif ctx.NOTEQ():
return BinaryOp("<>",self.visit(ctx.simpleExpression1(0)),self.visit(ctx.simpleExpression1(1)))
elif ctx.LESS():
return BinaryOp("<",self.visit(ctx.simpleExpression1(0)),self.visit(ctx.simpleExpression1(1)))
elif ctx.GREATER():
return BinaryOp(">",self.visit(ctx.simpleExpression1(0)),self.visit(ctx.simpleExpression1(1)))
elif ctx.LEQ():
return BinaryOp("<=",self.visit(ctx.simpleExpression1(0)),self.visit(ctx.simpleExpression1(1)))
else:
return BinaryOp(">=",self.visit(ctx.simpleExpression1(0)),self.visit(ctx.simpleExpression1(1)))
else:
return self.visit(ctx.simpleExpression1(0))
def visitExpression1(self, ctx: MPParser.Expression1Context):
#expression1:expression2 EQ expression2| expression2 NOTEQ expression2| expression2 LESS expression2
#| expression2 GREATER expression2| expression2 LEQ expression2| expression2 GEQ expression2 | expression2
if ctx.EQ():
return BinaryOp("=", self.visit(ctx.expression2(0)),
self.visit(ctx.expression2(1)))
elif ctx.NOTEQ():
return BinaryOp("<>", self.visit(ctx.expression2(0)),
self.visit(ctx.expression2(1)))
elif ctx.LESS():
return BinaryOp("<", self.visit(ctx.expression2(0)),
self.visit(ctx.expression2(1)))
elif ctx.GREATER():
return BinaryOp(">", self.visit(ctx.expression2(0)),
self.visit(ctx.expression2(1)))
elif ctx.LEQ():
return BinaryOp("<=", self.visit(ctx.expression2(0)),
self.visit(ctx.expression2(1)))
elif ctx.GEQ():
return BinaryOp(">=", self.visit(ctx.expression2(0)),
self.visit(ctx.expression2(1)))
else:
return self.visit(ctx.expression2(0)) #ctx.expression2() thì error