@Test
public void shouldDuplicateResultOnStackWhenSimpleExpressionResultIsToBeDuplicatedOnStack() {
SimpleExpression simpleExpression = mock(SimpleExpression.class);
when(simpleExpression.isResultDuplicatedOnStack()).thenReturn(true);
when(simpleExpression.isResultLeftOnStack()).thenReturn(false);
analyser.visitEnd(simpleExpression);
verify(writer).pushDuplicate();
}
@Test
public void shouldPopResultFromStackWhenSimpleExpressionResultIsNotToBeLeftOnStack() {
SimpleExpression simpleExpression = mock(SimpleExpression.class);
when(simpleExpression.isResultLeftOnStack()).thenReturn(false);
when(simpleExpression.isResultDuplicatedOnStack()).thenReturn(false);
analyser.visitEnd(simpleExpression);
verify(writer).pop();
}
public String ToString()
{
StringBuilder str = new StringBuilder();
str.append('(');
str.append(e1.toString());
str.append(' ');
switch (op)
{
case AND:
str.append("&&");
break;
case OR:
str.append("||");
break;
case EQBOOL:
str.append("==");
break;
case LT:
str.append('<');
break;
case GT:
str.append('>');
break;
case LEQ:
str.append("<=");
break;
case GEQ:
str.append(">=");
break;
case PLUS:
str.append('+');
break;
case MINUS:
str.append('-');
break;
case TIMES:
str.append('*');
break;
case DIV:
str.append('/');
break;
default:
return "";
}
str.append(' ');
str.append(e2.toString());
str.append(')');
return str.toString();
}
public ObjectType getExpressionType()
{
ObjectType e1Type = e1.getExpressionType(), e2Type = e2.getExpressionType();
switch (op)
{
case EQBOOL:
if (e1Type.equals(e2Type))
{
return ObjectType.booleanType;
}
break;
case AND:
case OR:
if (e1Type.equals(ObjectType.booleanType)
&& e2Type.equals(ObjectType.booleanType))
{
return ObjectType.booleanType;
}
break;
case LT:
case GT:
case LEQ:
case GEQ:
if (e1Type.equals(ObjectType.intType)
&& e2Type.equals(ObjectType.intType))
{
return ObjectType.booleanType;
}
break;
case PLUS:
if (e1Type.equals(ObjectType.stringType)
|| e2Type.equals(ObjectType.stringType))
{
return ObjectType.stringType;
}
else if (e1Type.equals(ObjectType.intType)
&& e2Type.equals(ObjectType.intType))
{
return ObjectType.intType;
}
//erreur
break;
//return ObjectType.intType;
case MINUS:
case TIMES:
case DIV:
if (e1Type.equals(ObjectType.intType)
&& e2Type.equals(ObjectType.intType))
{
return ObjectType.intType;
}
//erreur
break;
//return ObjectType.intType;
default:
return ObjectType.undefinedType;
}
return ObjectType.undefinedType;
}
