Method allowArgs

code/src/java/plugin/function/GetFactFunction.java:61–114

(SemanticsVisitor visitor, Node[] args, FormulaSemantics semantics)

	}

	@Override
	public FormatManager<?> allowArgs(SemanticsVisitor visitor, Node[] args, FormulaSemantics semantics)
	{
		if (args.length != 3)
		{
			throw new SemanticsFailureException("Function " + getFunctionName()
				+ " received incorrect # of arguments, expected: 3 got " + args.length + " " + Arrays.asList(args));
		}

		//Turn scope node into a scope name
		Node scopeNode = args[0];
		if (!(scopeNode instanceof ASTQuotString))
		{
			throw new SemanticsFailureException("Parse Error: Invalid Format Node: " + scopeNode.getClass().getName()
				+ " found in location requiring a" + " Static String (class cannot be evaluated)");
		}
		String formatName = ((ASTQuotString) scopeNode).getText();
		LoadContext context = semantics.get(ManagerKey.CONTEXT);
		FormatManager<?> formatManager = context.getManufacturer(formatName);
		FormatManager<?> objectFormat = (FormatManager<?>) args[1].jjtAccept(visitor,
			semantics.getWith(FormulaSemantics.ASSERTED, Optional.of(formatManager)));

		if (!formatManager.equals(objectFormat))
		{
			throw new SemanticsFailureException(
				"Parse Error: Invalid Object Format: " + objectFormat.getIdentifierType()
					+ " found in a getFact call that asserted " + formatManager.getIdentifierType());
		}
		if (!CDOMOBJECT_CLASS.isAssignableFrom(objectFormat.getManagedClass()))
		{
			throw new SemanticsFailureException(
				"Parse Error: Invalid Object Format: " + objectFormat + " is not capable of holding a Fact");
		}
		Node factNode = args[2];
		if (!(factNode instanceof ASTQuotString))
		{
			throw new SemanticsFailureException("Parse Error: Invalid Fact Node: " + factNode.getClass().getName()
				+ " found in location requiring a" + " Static String (class cannot be evaluated)");
		}
		String factName = ((ASTQuotString) factNode).getText();
		FactDefinition<?, ?> factDef = context.getReferenceContext()
			.silentlyGetConstructedCDOMObject(FactDefinition.class, formatName + " " + factName);
		if (factDef == null)
		{
			throw new SemanticsFailureException("Parse Error: Invalid Fact: " + factName + " is not a valid FACT name");
		}
		Class<?> usable = factDef.getUsableLocation();
		if (!usable.isAssignableFrom(objectFormat.getManagedClass()))
		{
			throw new SemanticsFailureException("Parse Error: Invalid Fact: " + factDef.getDisplayName() + " works on "
				+ usable + " but formula asserted it was in " + objectFormat.getIdentifierType());
		}
		return factDef.getFormatManager();
	}

	@Override
	public Object evaluate(EvaluateVisitor visitor, Node[] args, EvaluationManager manager)