/// <summary>
/// To write out the value of a condition expr, we invoke the evaluator
/// in eval.g to walk the condition tree computing the boolean value.
/// If result is true, then we write subtemplate.
/// </summary>
public override int Write(StringTemplate self, IStringTemplateWriter output)
{
if (exprTree == null || self == null || output == null)
{
return 0;
}
// System.out.println("evaluating conditional tree: "+exprTree.toStringList());
ActionEvaluator eval = new ActionEvaluator(self, this, output);
ActionParser.initializeASTFactory(eval.getASTFactory());
int n = 0;
try
{
// get conditional from tree and compute result
AST cond = exprTree.getFirstChild();
bool includeSubtemplate = eval.ifCondition(cond); // eval and write out tree
// System.out.println("subtemplate "+subtemplate);
if (includeSubtemplate)
{
/* To evaluate the IF chunk, make a new instance whose enclosingInstance
* points at 'self' so get attribute works. Otherwise, enclosingInstance
* points at the template used to make the precompiled code. We need a
* new template instance every time we exec this chunk to get the new
* "enclosing instance" pointer.
*/
StringTemplate s = subtemplate.GetInstanceOf();
s.EnclosingInstance = self;
// make sure we evaluate in context of enclosing template's
// group so polymorphism works. :)
s.Group = self.Group;
s.NativeGroup = self.NativeGroup;
n = s.Write(output);
}
else if (elseSubtemplate != null)
{
// evaluate ELSE clause if present and IF condition failed
StringTemplate s = elseSubtemplate.GetInstanceOf();
s.EnclosingInstance = self;
s.Group = self.Group;
s.NativeGroup = self.NativeGroup;
n = s.Write(output);
}
}
catch (RecognitionException re)
{
self.Error("can't evaluate tree: " + exprTree.ToStringList(), re);
}
return n;
}
override public int Write(IStringTemplateWriter output)
{
SetPredefinedAttributes();
SetDefaultArgumentValues();
//IRailsEngineContext context = (IRailsEngineContext) GetAttribute(ConfigConstants.CONTEXT_ATTRIB_KEY);
IRailsEngineContext context = MonoRailHttpHandler.CurrentContext;
StringWriter writer = new StringWriter();
StringTemplateViewContextAdapter viewComponentContext = new StringTemplateViewContextAdapter(viewComponentName, this);
viewComponentContext.TextWriter = writer;
viewComponent.Init(context, viewComponentContext);
viewComponent.Render();
if (viewComponentContext.ViewToRender != null)
{
StringTemplate viewST = group.GetEmbeddedInstanceOf(this, viewComponentContext.ViewToRender);
writer.Write(viewST.ToString());
}
if (viewComponentName.Equals("CaptureFor"))
{
string keyToSet = (string)GetAttribute("id");
object valToSet = GetAttribute(keyToSet);
OutermostEnclosingInstance.RemoveAttribute(keyToSet);
OutermostEnclosingInstance.SetAttribute(keyToSet, valToSet);
}
output.Write(writer.ToString());
// if (LintMode)
// {
// CheckForTrouble();
// }
return(0);
}
override public int Write(IStringTemplateWriter output)
{
SetPredefinedAttributes();
SetDefaultArgumentValues();
//IRailsEngineContext context = (IRailsEngineContext) GetAttribute(ConfigConstants.CONTEXT_ATTRIB_KEY);
IRailsEngineContext context = MonoRailHttpHandler.CurrentContext;
StringWriter writer = new StringWriter();
StringTemplateViewContextAdapter viewComponentContext = new StringTemplateViewContextAdapter(viewComponentName, this);
viewComponentContext.TextWriter = writer;
viewComponent.Init(context, viewComponentContext);
viewComponent.Render();
if (viewComponentContext.ViewToRender != null)
{
StringTemplate viewST = group.GetEmbeddedInstanceOf(this, viewComponentContext.ViewToRender);
writer.Write(viewST.ToString());
}
if (viewComponentName.Equals("CaptureFor"))
{
string keyToSet = (string) GetAttribute("id");
object valToSet = GetAttribute(keyToSet);
OutermostEnclosingInstance.RemoveAttribute(keyToSet);
OutermostEnclosingInstance.SetAttribute(keyToSet, valToSet);
}
output.Write(writer.ToString());
// if (LintMode)
// {
// CheckForTrouble();
// }
return 0;
}
/// <summary> /// How to write this node to output; return how many char written /// </summary> /// <returns>Count of characters written.</returns> public abstract int Write(StringTemplate self, IStringTemplateWriter output);
