def visitExpression1(self, ctx: MPParser.Expression1Context):
#print("expr1")
if ctx.getChildCount() == 1:
return self.visitChildren(ctx)
else:
return BinaryOp(
ctx.getChild(1).getText(), self.visit(ctx.expression2(0)),
self.visit(ctx.expression2(1)))
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):
op = ""
if ctx.EQUAL():
op = ctx.EQUAL().getText()
elif ctx.NOT_EQUAL():
op = ctx.NOT_EQUAL().getText()
elif ctx.LT():
op = ctx.LT().getText()
elif ctx.LE():
op = ctx.LE().getText()
elif ctx.GT():
op = ctx.GT().getText()
elif ctx.GE():
op = ctx.GE().getText()
else:
return self.visit(ctx.expression2(0))
left = self.visit(ctx.expression2(0))
right = self.visit(ctx.expression2(1))
return BinaryOp(op, left, right)
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