protected internal virtual void evaluateArguments(StringTemplate self)
{
StringTemplateAST argumentsAST = self.getArgumentsAST();
if (argumentsAST == null || argumentsAST.getFirstChild() == null)
{
// return immediately if missing tree or no actual args
return ;
}
ActionEvaluator eval = new ActionEvaluator(self, this, null);
try
{
// using any initial argument context (such as when obj is set),
// evaluate the arg list like bold(item=obj). Since we pass
// in any existing arg context, that context gets filled with
// new values. With bold(item=obj), context becomes:
// {[obj=...],[item=...]}.
IDictionary ac = eval.argList(argumentsAST, self.getArgumentContext());
self.setArgumentContext(ac);
}
catch (RecognitionException re)
{
self.error("can't evaluate tree: " + argumentsAST.ToStringList(), re);
}
}
/// <summary>
/// Evaluate an argument list within the context of the enclosing
/// template but store the values in the context of self, the
/// new embedded template. For example, bold(item=item) means
/// that bold.item should get the value of enclosing.item.
/// </summary>
protected internal virtual void evaluateArguments(StringTemplate self)
{
StringTemplateAST argumentsAST = self.getArgumentsAST();
if (argumentsAST == null || argumentsAST.getFirstChild() == null)
{
// return immediately if missing tree or no actual args
return ;
}
// Evaluate args in the context of the enclosing template, but we
// need the predefined args like 'it', 'attr', and 'i' to be
// available as well so we put a dummy ST between the enclosing
// context and the embedded context. The dummy has the predefined
// context as does the embedded.
StringTemplate enclosing = self.getEnclosingInstance();
StringTemplate argContextST = new StringTemplate(self.getGroup(), "");
argContextST.setName("<invoke "+self.getName()+" arg context>");
argContextST.setEnclosingInstance(enclosing);
argContextST.setArgumentContext(self.getArgumentContext());
ActionEvaluator eval = new ActionEvaluator(argContextST, this, null);
try
{
// using any initial argument context (such as when obj is set),
// evaluate the arg list like bold(item=obj). Since we pass
// in any existing arg context, that context gets filled with
// new values. With bold(item=obj), context becomes:
// {[obj=...],[item=...]}.
IDictionary ac = eval.argList(argumentsAST, self, self.getArgumentContext());
self.setArgumentContext(ac);
}
catch (RecognitionException re)
{
self.error("can't evaluate tree: " + argumentsAST.ToStringList(), re);
}
}
