1.修复了一些类的isTerminal没有被初始化的bug

2.修复了一些地方判断下一个Terminal的bug
Signed-off-by: facat@lab.com <facat@lab.com>

testHasttable/breaker.cpp

@@ -1,6 +1,6 @@
 #include "breaker.h"
-
-Breaker::Breaker(QObject *parent):BasicElementInfo(parent)
+#include <iostream>
+Breaker::Breaker(QObject *parent):BasicElementInfo(parent),isTerminalA(true)
 {
 }
 
@@ -31,6 +31,15 @@ bool Breaker::derivedParse(QXmlStreamReader &reader)
     return true;
 }
 
+QString Breaker::getTerminalA()
+{
+    return this->terminalA;
+}
+QString Breaker::getTerminalB()
+{
+    return this->terminalB;
+}
+
 bool Breaker::parse(QXmlStreamReader &reader)
 {
     return this->parseBasicInfo(reader);