/// <summary> the logical or :
/// the rule :
/// left || null -> left
/// null || right -> right
/// null || null -> false
/// left || right -> left || right
/// </summary>
public override bool evaluate(InternalContextAdapter context)
{
INode left = jjtGetChild(0);
INode right = jjtGetChild(1);
/*
* if the left is not null and true, then true
*/
if (left != null && left.evaluate(context))
{
return(true);
}
/*
* same for right
*/
if (right != null && right.evaluate(context))
{
return(true);
}
return(false);
}
/*
* CODE FOR ALTERNATE IMPL : please ignore. I will remove when confortable with current.
*/
/// <summary> not used in current impl
/// *
/// Constructor for alternate impl where VelProxy class would make new
/// VMProxyArg objects, and use this contructor to avoid reparsing the
/// reference args
/// *
/// that impl also had the VMProxyArg carry it's context
/// </summary>
public VMProxyArg(VMProxyArg model, InternalContextAdapter c)
{
usercontext = c;
contextReference = model.ContextReference;
callerReference = model.CallerReference;
nodeTree = model.NodeTree;
staticObject = model.StaticObject;
type = model.Type;
if (nodeTree != null)
{
numTreeChildren = nodeTree.jjtGetNumChildren();
}
if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTREFERENCE)
{
if (numTreeChildren == 0)
{
/*
* use the reference node to do this...
*/
singleLevelRef = ((ASTReference)nodeTree).RootString;
}
}
}
/// <summary> The major meat of VelocimacroProxy, init() checks the # of arguments, patches the
/// macro body, renders the macro into an AST, and then inits the AST, so it is ready
/// for quick rendering. Note that this is only AST dependant stuff. Not context.
/// </summary>
public override void init(RuntimeServices rs, InternalContextAdapter context, INode node)
{
base.init(rs, context, node);
/*
* how many args did we get?
*/
int i = node.jjtGetNumChildren();
/*
* right number of args?
*/
if (NumArgs != i)
{
rsvc.error("VM #" + macroName + ": error : too " + ((NumArgs > i) ? "few" : "many") + " arguments to macro. Wanted " + NumArgs + " got " + i);
return;
}
/*
* get the argument list to the instance use of the VM
*/
callingArgs = getArgArray(node);
/*
* now proxy each arg in the context
*/
setupMacro(callingArgs, callingArgTypes);
return;
}
/// <summary> computes the product of the two args. Returns null if either arg is null
/// or if either arg is not an integer
/// </summary>
public override Object Value(InternalContextAdapter context)
{
/*
* get the two args
*/
Object left = jjtGetChild(0).Value(context);
Object right = jjtGetChild(1).Value(context);
/*
* if either is null, lets log and bail
*/
if (left == null || right == null)
{
rsvc.error((left == null ? "Left" : "Right") + " side (" + jjtGetChild((left == null ? 0 : 1)).literal() + ") of multiplication operation has null value." + " Operation not possible. " + context.CurrentTemplateName + " [line " + Line + ", column " + Column + "]");
return(null);
}
/*
* if not an Integer, not much we can do either
*/
if (!(left is Int32) || !(right is Int32))
{
rsvc.error((!(left is Int32) ? "Left" : "Right") + " side of multiplication operation is not a valid type. " + "Currently only integers (1,2,3...) and Integer type is supported. " + context.CurrentTemplateName + " [line " + Line + ", column " + Column + "]");
return(null);
}
return(((Int32)left) * ((Int32)right));
}
/// <summary> Calculates the value of the logical expression
/// *
/// arg1 == arg2
/// *
/// All class types are supported. Uses equals() to
/// determine equivalence. This should work as we represent
/// with the types we already support, and anything else that
/// implements equals() to mean more than identical references.
/// *
/// *
/// </summary>
/// <param name="context"> internal context used to evaluate the LHS and RHS
/// </param>
/// <returns>true if equivalent, false if not equivalent,
/// false if not compatible arguments, or false
/// if either LHS or RHS is null
///
/// </returns>
public override bool evaluate(InternalContextAdapter context)
{
Object left = jjtGetChild(0).Value(context);
Object right = jjtGetChild(1).Value(context);
/*
* for equality, they are allowed to be null references
*/
try
{
if (ObjectComparer.CompareObjects(left, right) == 0)
{
return(true);
}
}
catch
{
// Ignore, we can't compare decently by value, but we honestly don't give a sh*t
}
// They are not equal by value, try a reference comparison
// reference equal => definitely equal objects ;)
// For operator overloaded types, this will not really be a reference comp, but that's ok.
return(left == right);
}
public override bool evaluate(InternalContextAdapter context)
{
/*
* get the two args
*/
Object left = jjtGetChild(0).Value(context);
Object right = jjtGetChild(1).Value(context);
/*
* if either is null, lets log and bail
*/
if (left == null || right == null)
{
rsvc.error((left == null ? "Left" : "Right") + " side (" + jjtGetChild((left == null ? 0 : 1)).literal() + ") of '<=' operation has null value." + " Operation not possible. " + context.CurrentTemplateName + " [line " + Line + ", column " + Column + "]");
return(false);
}
try
{
return(ObjectComparer.CompareObjects(left, right) <= 0);
}
catch (ArgumentException ae)
{
rsvc.error(ae.Message);
return(false);
}
}
public override Object init(InternalContextAdapter context, Object data)
{
/*
* init our children
*/
base.init(context, data);
/*
* the only thing we can do in init() is getRoot()
* as that is template based, not context based,
* so it's thread- and context-safe
*/
rootString = Root;
numChildren = jjtGetNumChildren();
/*
* and if appropriate...
*/
if (numChildren > 0)
{
identifier = jjtGetChild(numChildren - 1).FirstToken.image;
}
return(data);
}
/// <summary> Return name of this directive.
/// </summary>
/// <summary> Return type of this directive.
/// </summary>
/// <summary> render() doesn't do anything in the final output rendering.
/// There is no output from a #macro() directive.
/// </summary>
public override bool render(InternalContextAdapter context, TextWriter writer, Node node)
{
/*
* do nothing : We never render. The VelocimacroProxy object does that
*/
return(true);
}
/// <summary> logical and :
/// null && right = false
/// left && null = false
/// null && null = false
/// </summary>
public override bool evaluate(InternalContextAdapter context)
{
INode left = jjtGetChild(0);
INode right = jjtGetChild(1);
/*
* if either is null, lets log and bail
*/
if (left == null || right == null)
{
rsvc.error((left == null ? "Left" : "Right") + " side of '&&' operation is null." + " Operation not possible. " + context.CurrentTemplateName + " [line " + Line + ", column " + Column + "]");
return(false);
}
/*
* short circuit the test. Don't eval the RHS if the LHS is false
*/
if (left.evaluate(context))
{
if (right.evaluate(context))
{
return(true);
}
}
return(false);
}
/// <summary> iterates through the argument list and renders every
/// argument that is appropriate. Any non appropriate
/// arguments are logged, but render() continues.
/// </summary>
public override bool render(InternalContextAdapter context, TextWriter writer, INode node)
{
/*
* get our arguments and check them
*/
int argCount = node.jjtGetNumChildren();
for (int i = 0; i < argCount; i++)
{
/*
* we only handle StringLiterals and References right now
*/
INode n = node.jjtGetChild(i);
if (n.Type == ParserTreeConstants.JJTSTRINGLITERAL || n.Type == ParserTreeConstants.JJTREFERENCE)
{
if (!renderOutput(n, context, writer))
{
outputErrorToStream(writer, "error with arg " + i + " please see log.");
}
}
else
{
//UPGRADE_TODO: The equivalent in .NET for method 'java.Object.toString' may return a different value. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1043"'
rsvc.error("#include() error : invalid argument type : " + n.ToString());
outputErrorToStream(writer, "error with arg " + i + " please see log.");
}
}
return(true);
}
/// <summary> init : we don't have to do much. Init the tree (there
/// shouldn't be one) and then see if interpolation is turned on.
/// </summary>
public override Object init(InternalContextAdapter context, Object data)
{
/*
* simple habit... we prollie don't have an AST beneath us
*/
base.init(context, data);
/*
* the stringlit is set at template parse time, so we can
* do this here for now. if things change and we can somehow
* create stringlits at runtime, this must
* move to the runtime execution path
*
* so, only if interpolation is turned on AND it starts
* with a " AND it has a directive or reference, then we
* can interpolate. Otherwise, don't bother.
*/
interpolate = rsvc.getBoolean(RuntimeConstants_Fields.INTERPOLATE_STRINGLITERALS, true) && FirstToken.image.StartsWith("\"") && ((FirstToken.image.IndexOf((Char)'$') != -1) || (FirstToken.image.IndexOf((Char)'#') != -1));
/*
* get the contents of the string, minus the '/" at each end
*/
image = FirstToken.image.Substring(1, (FirstToken.image.Length - 1) - (1));
/*
* tack a space on the end (dreaded <MORE> kludge)
*/
interpolateimage = image + " ";
if (interpolate)
{
/*
* now parse and init the nodeTree
*/
//UPGRADE_ISSUE: The equivalent of constructor 'java.io.BufferedReader.BufferedReader' is incompatible with the expected type in C#. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1109"'
TextReader br = new StringReader(interpolateimage);
/*
* it's possible to not have an initialization context - or we don't
* want to trust the caller - so have a fallback value if so
*
* Also, do *not* dump the VM namespace for this template
*/
nodeTree = rsvc.parse(br, (context != null) ? context.CurrentTemplateName : "StringLiteral", false);
/*
* init with context. It won't modify anything
*/
nodeTree.init(context, rsvc);
}
return(data);
}
/// <summary> CTOR, wraps an ICA
/// </summary>
public VMContext(InternalContextAdapter inner, RuntimeServices rsvc)
{
InitBlock();
localcontextscope = rsvc.getBoolean(RuntimeConstants_Fields.VM_CONTEXT_LOCALSCOPE, false);
wrappedContext = inner;
innerContext = inner.BaseContext;
}
public override bool render(InternalContextAdapter context, System.IO.TextWriter writer) {
int i, k = jjtGetNumChildren();
for (i = 0; i < k; i++)
jjtGetChild(i).render(context, writer);
return true;
}
/// <summary> Return name of this Velocimacro.
/// </summary>
/// <summary> Velocimacros are always LINE
/// type directives.
/// </summary>
/// <summary> sets the directive name of this VM
/// </summary>
/// <summary> sets the array of arguments specified in the macro definition
/// </summary>
/// <summary> returns the number of ars needed for this VM
/// </summary>
/// <summary> Sets the orignal macro body. This is simply the cat of the macroArray, but the
/// Macro object creates this once during parsing, and everyone shares it.
/// Note : it must not be modified.
/// </summary>
/// <summary> Renders the macro using the context
/// </summary>
public override bool render(InternalContextAdapter context, System.IO.TextWriter writer, INode node)
{
try {
/*
* it's possible the tree hasn't been parsed yet, so get
* the VMManager to parse and init it
*/
if (nodeTree != null)
{
if (!init_Renamed_Field)
{
nodeTree.init(context, rsvc);
init_Renamed_Field = true;
}
/*
* wrap the current context and add the VMProxyArg objects
*/
VMContext vmc = new VMContext(context, rsvc);
for (int i = 1; i < argArray.Length; i++)
{
/*
* we can do this as VMProxyArgs don't change state. They change
* the context.
*/
VMProxyArg arg = (VMProxyArg)proxyArgHash[argArray[i]];
vmc.AddVMProxyArg(arg);
}
/*
* now render the VM
*/
nodeTree.render(vmc, writer);
}
else
{
rsvc.error("VM error : " + macroName + ". Null AST");
}
} catch (System.Exception e) {
/*
* if it's a MIE, it came from the render.... throw it...
*/
if (e is MethodInvocationException)
{
throw (MethodInvocationException)e;
}
rsvc.error("VelocimacroProxy.render() : exception VM = #" + macroName + "() : " + StringUtils.stackTrace(e));
}
return(true);
}
/// <summary> simple init - don't do anything that is context specific.
/// just get what we need from the AST, which is static.
/// </summary>
public override Object init(InternalContextAdapter context, Object data)
{
base.init(context, data);
identifier = FirstToken.image;
uberInfo = new Info(context.CurrentTemplateName, Line, Column);
return(data);
}
/// <summary> Returns the 'root string', the reference key
/// </summary>
/// <summary> gets an Object that 'is' the value of the reference
/// *
/// </summary>
/// <param name="o"> unused Object parameter
/// </param>
/// <param name="context">context used to generate value
///
/// </param>
public override Object execute(Object o, InternalContextAdapter context)
{
if (referenceType == RUNT)
{
return(null);
}
/*
* get the root object from the context
*/
Object result = getVariableValue(context, rootString);
if (result == null)
{
return(null);
}
/*
* Iteratively work 'down' (it's flat...) the reference
* to get the value, but check to make sure that
* every result along the path is valid. For example:
*
* $hashtable.Customer.Name
*
* The $hashtable may be valid, but there is no key
* 'Customer' in the hashtable so we want to stop
* when we find a null value and return the null
* so the error gets logged.
*/
try
{
for (int i = 0; i < numChildren; i++)
{
result = jjtGetChild(i).execute(result, context);
if (result == null)
{
return(null);
}
}
return(result);
}
catch (MethodInvocationException mie)
{
/*
* someone tossed their cookies
*/
rsvc.error("Method " + mie.MethodName + " threw exception for reference $" + rootString + " in template " + context.CurrentTemplateName + " at " + " [" + this.Line + "," + this.Column + "]");
mie.ReferenceName = rootString;
throw mie;
}
}
/// <summary>for log msg purposes
/// </summary>
/// <summary>for log msg purposes
/// </summary>
/// <summary> How this directive is to be initialized.
/// </summary>
public virtual void init(RuntimeServices rs, InternalContextAdapter context, INode node)
{
rsvc = rs;
// int i, k = node.jjtGetNumChildren();
//for (i = 0; i < k; i++)
// node.jjtGetChild(i).init(context, rs);
}
/// <summary> puts the value of the RHS into the context under the key of the LHS
/// </summary>
public override bool render(InternalContextAdapter context, TextWriter writer)
{
/*
* get the RHS node, and it's value
*/
Object value_ = right.Value(context);
/*
* it's an error if we don't have a value of some sort
*/
if (value_ == null)
{
/*
* first, are we supposed to say anything anyway?
*/
if (blather)
{
EventCartridge ec = context.EventCartridge;
bool doit = true;
/*
* if we have an EventCartridge...
*/
if (ec != null)
{
doit = ec.shouldLogOnNullSet(left.literal(), right.literal());
}
if (doit)
{
rsvc.error("RHS of #set statement is null. Context will not be modified. " + context.CurrentTemplateName + " [line " + Line + ", column " + Column + "]");
}
}
return(false);
}
/*
* if the LHS is simple, just punch the value into the context
* otherwise, use the setValue() method do to it.
* Maybe we should always use setValue()
*/
if (left.jjtGetNumChildren() == 0)
{
context.Put(leftReference, value_);
}
else
{
left.setValue(context, value_);
}
return(true);
}
public override Object init(InternalContextAdapter context, Object data)
{
Token t = FirstToken;
String text = NodeUtils.tokenLiteral(t);
ctext = text.ToCharArray();
return(data);
}
/// <summary>
/// does the instrospection of the class for the method needed.
/// Note, as this calls value() on the args if any, this must
/// only be called at execute() / render() time.
///
/// NOTE: this will try to flip the case of the first character for
/// convience (compatability with Java version). If there are no arguments,
/// it will also try to find a property with the same name (also flipping first character).
/// </summary>
private Object doIntrospection(InternalContextAdapter context, Type data)
{
/*
* Now the parameters have to be processed, there
* may be references contained within that need
* to be introspected.
*/
for (int j = 0; j < paramCount; j++)
{
params_Renamed[j] = jjtGetChild(j + 1).Value(context);
}
String methodNameUsed = methodName;
MethodInfo m = rsvc.Introspector.getMethod(data, methodNameUsed, params_Renamed);
PropertyInfo p = null;
if (m == null)
{
methodNameUsed = methodName.Substring(0, 1).ToUpper() + methodName.Substring(1);
m = rsvc.Introspector.getMethod(data, methodNameUsed, params_Renamed);
if (m == null)
{
methodNameUsed = methodName.Substring(0, 1).ToLower() + methodName.Substring(1);
m = rsvc.Introspector.getMethod(data, methodNameUsed, params_Renamed);
// if there are no arguments, look for a property
if (m == null && paramCount == 0)
{
methodNameUsed = methodName;
p = rsvc.Introspector.getProperty(data, methodNameUsed);
if (p == null)
{
methodNameUsed = methodName.Substring(0, 1).ToUpper() + methodName.Substring(1);
p = rsvc.Introspector.getProperty(data, methodNameUsed);
if (p == null)
{
methodNameUsed = methodName.Substring(0, 1).ToLower() + methodName.Substring(1);
p = rsvc.Introspector.getProperty(data, methodNameUsed);
}
}
}
}
}
// if a method was found, return it. Otherwise, return whatever was found with a property, may be null
if (m != null)
{
return(m);
}
else
{
return(p);
}
}
public override void init(RuntimeServices rs, InternalContextAdapter context, Node node)
{
base.init(rs, context, node);
/*
* again, don't do squat. We want the AST of the macro
* block to hang off of this but we don't want to
* init it... it's useless...
*/
return;
}
public override bool evaluate(InternalContextAdapter context)
{
if (jjtGetChild(0).evaluate(context))
{
return(false);
}
else
{
return(true);
}
}
public override bool render(InternalContextAdapter context, TextWriter writer)
{
int i, k = jjtGetNumChildren();
for (i = 0; i < k; i++)
{
jjtGetChild(i).render(context, writer);
}
return(true);
}
internal virtual void setup(InternalContextAdapter ica)
{
/*
* if not parsed yet, parse!
*/
if (nodeTree == null)
{
parseTree(ica);
}
}
/// <summary> Initialization method - doesn't do much but do the object
/// creation. We only need to do it once.
/// </summary>
public override Object init(InternalContextAdapter context, Object data)
{
/*
* init the tree correctly
*/
base.init(context, data);
value__Field = Int32.Parse(FirstToken.image);
return(data);
}
internal virtual void parseTree(InternalContextAdapter ica)
{
try {
//UPGRADE_ISSUE: The equivalent of constructor 'java.io.BufferedReader.BufferedReader' is incompatible with the expected type in C#. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1109"'
System.IO.TextReader br = new System.IO.StringReader(macrobody);
nodeTree = Enclosing_Instance.rsvc.parse(br, "VM:" + macroname, true);
nodeTree.init(ica, null);
} catch (System.Exception e) {
Enclosing_Instance.rsvc.error("VelocimacroManager.parseTree() : exception " + macroname + " : " + StringUtils.stackTrace(e));
}
}
/// <summary> Invoked by VMContext when Context.put() is called for a proxied reference.
/// *
/// </summary>
/// <param name="context">context to modify via direct placement, or AST.setValue()
/// </param>
/// <param name="o"> new value of reference
/// </param>
/// <returns>Object currently null
///
/// </returns>
public Object setObject(InternalContextAdapter context, Object o)
{
/*
* if we are a reference, we could be updating a property
*/
if (type == ParserTreeConstants.JJTREFERENCE)
{
if (numTreeChildren > 0)
{
/*
* we are a property, and being updated such as
* #foo( $bar.BangStart)
*/
try
{
((ASTReference)nodeTree).setValue(context, o);
}
catch (MethodInvocationException mie)
{
rsvc.error("VMProxyArg.getObject() : method invocation error setting value : " + mie);
}
}
else
{
/*
* we are a 'single level' reference like $foo, so we can set
* out context directly
*/
context.Put(singleLevelRef, o);
// alternate impl : usercontext.put( singleLevelRef, o);
}
}
else
{
/*
* if we aren't a reference, then we simply switch type,
* get a new value, and it doesn't go into the context
*
* in current impl, this shouldn't happen.
*/
type = GENERALSTATIC;
staticObject = o;
rsvc.error("VMProxyArg.setObject() : Programmer error : I am a constant! No setting! : " + contextReference + " / " + callerReference);
}
return(null);
}
public override Object Value(InternalContextAdapter context)
{
int size = jjtGetNumChildren();
ArrayList objectArray = new ArrayList();
for (int i = 0; i < size; i++)
{
objectArray.Add(jjtGetChild(i).Value(context));
}
return(objectArray);
}
/// <summary> Return name of this directive.
/// </summary>
/// <summary> Return type of this directive.
/// </summary>
/// <summary> simple init - init the tree and get the elementKey from
/// the AST
/// </summary>
public override void init(RuntimeServices rs, InternalContextAdapter context, INode node)
{
base.init(rs, context, node);
/*
* get the msg, and add the space so we don't have to
* do it each time
*/
outputMsgStart = rsvc.getString(RuntimeConstants_Fields.ERRORMSG_START);
outputMsgStart = outputMsgStart + " ";
outputMsgEnd = rsvc.getString(RuntimeConstants_Fields.ERRORMSG_END);
outputMsgEnd = " " + outputMsgEnd;
}
/// <summary>
/// simple init - init our subtree and get what we can from
/// the AST
/// </summary>
public override Object init(InternalContextAdapter context, Object data)
{
base.init(context, data);
/*
* this is about all we can do
*/
methodName = FirstToken.image;
paramCount = jjtGetNumChildren() - 1;
params_Renamed = new Object[paramCount];
return(data);
}
/// <summary>
/// simple init - init the tree and get the elementKey from
/// the AST
/// </summary>
public override void init(RuntimeServices rs, InternalContextAdapter context, INode node)
{
base.init(rs, context, node);
counterName = rsvc.getString(RuntimeConstants_Fields.COUNTER_NAME);
counterInitialValue = rsvc.getInt(RuntimeConstants_Fields.COUNTER_INITIAL_VALUE);
/*
* this is really the only thing we can do here as everything
* else is context sensitive
*/
elementKey = node.jjtGetChild(0).FirstToken.image.Substring(1);
}
public override bool render(InternalContextAdapter context, TextWriter writer, INode node) {
/*
* what is our arg?
*/
INode n = node.jjtGetChild(0);
if (n.Type == ParserTreeConstants.JJTSTRINGLITERAL) {
try {
String element = (String) node.jjtGetChild(0).value_Renamed(context);
TemplateHandler th = (TemplateHandler) rsvc.getApplicationAttribute("NVelocity.Dvsl.TemplateHandler");
th.RegisterMatch(element, (SimpleNode) node.jjtGetChild(node.jjtGetNumChildren() - 1));
} catch (System.Exception ee) {}}
return true;
}
/// <summary> CTOR, wraps an ICA
/// </summary>
public VMContext(InternalContextAdapter inner, RuntimeServices rsvc) {
InitBlock();
localcontextscope = rsvc.getBoolean(RuntimeConstants_Fields.VM_CONTEXT_LOCALSCOPE, false);
wrappedContext = inner;
innerContext = inner.BaseContext;
}
/// <summary> does the actual rendering of the included file
/// *
/// </summary>
/// <param name="node">AST argument of type StringLiteral or Reference
/// </param>
/// <param name="context">valid context so we can render References
/// </param>
/// <param name="writer">output Writer
/// </param>
/// <returns>boolean success or failure. failures are logged
///
/// </returns>
private bool renderOutput(INode node, InternalContextAdapter context, System.IO.TextWriter writer) {
System.String arg = "";
if (node == null) {
rsvc.error("#include() error : null argument");
return false;
}
/*
* does it have a value? If you have a null reference, then no.
*/
System.Object value_Renamed = node.value_Renamed(context);
if (value_Renamed == null) {
rsvc.error("#include() error : null argument");
return false;
}
/*
* get the path
*/
//UPGRADE_TODO: The equivalent in .NET for method 'java.Object.toString' may return a different value. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1043"'
arg = value_Renamed.ToString();
Resource resource = null;
Resource current = context.CurrentResource;
try {
/*
* get the resource, and assume that we use the encoding of the current template
* the 'current resource' can be null if we are processing a stream....
*/
System.String encoding = null;
if (current != null) {
encoding = current.Encoding;
} else {
encoding = (System.String) rsvc.getProperty(NVelocity.Runtime.RuntimeConstants_Fields.INPUT_ENCODING);
}
resource = rsvc.getContent(arg, encoding);
} catch (ResourceNotFoundException rnfe) {
/*
* the arg wasn't found. Note it and throw
*/
rsvc.error("#include(): cannot find resource '" + arg + "', called from template " + context.CurrentTemplateName + " at (" + Line + ", " + Column + ")");
throw rnfe;
} catch (System.Exception e) {
rsvc.error("#include(): arg = '" + arg + "', called from template " + context.CurrentTemplateName + " at (" + Line + ", " + Column + ") : " + e);
}
if (resource == null)
return false;
writer.Write((System.String) resource.Data);
return true;
}
/// <summary> Returns the value of the expression.
/// Since the value of the expression is simply the boolean
/// result of evaluate(), lets return that.
/// </summary>
public override System.Object value_Renamed(InternalContextAdapter context) {
return evaluate(context);
}
/// <summary> logical and :
/// null && right = false
/// left && null = false
/// null && null = false
/// </summary>
public override bool evaluate(InternalContextAdapter context) {
INode left = jjtGetChild(0);
INode right = jjtGetChild(1);
/*
* if either is null, lets log and bail
*/
if (left == null || right == null) {
rsvc.error((left == null?"Left":"Right") + " side of '&&' operation is null." + " Operation not possible. " + context.CurrentTemplateName + " [line " + Line + ", column " + Column + "]");
return false;
}
/*
* short circuit the test. Don't eval the RHS if the LHS is false
*/
if (left.evaluate(context)) {
if (right.evaluate(context)) {
return true;
}
}
return false;
}
internal virtual void parseTree(InternalContextAdapter ica) {
try {
//UPGRADE_ISSUE: The equivalent of constructor 'java.io.BufferedReader.BufferedReader' is incompatible with the expected type in C#. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1109"'
System.IO.TextReader br = new System.IO.StringReader(macrobody);
nodeTree = Enclosing_Instance.rsvc.parse(br, "VM:" + macroname, true);
nodeTree.init(ica, null);
} catch (System.Exception e) {
Enclosing_Instance.rsvc.error("VelocimacroManager.parseTree() : exception " + macroname + " : " + StringUtils.stackTrace(e));
}
}
/// <summary> returns the value of the reference. Generally, this is only
/// called for dynamic proxies, as the static ones should have
/// been stored in the VMContext's localcontext store
/// *
/// </summary>
/// <param name="context">Context to use for getting current value
/// </param>
/// <returns>Object value
/// *
///
/// </returns>
public virtual System.Object getObject(InternalContextAdapter context) {
try {
/*
* we need to output based on our type
*/
System.Object retObject = null;
if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTREFERENCE) {
/*
* two cases : scalar reference ($foo) or multi-level ($foo.bar....)
*/
if (numTreeChildren == 0) {
/*
* if I am a single-level reference, can I not get get it out of my context?
*/
retObject = context.Get(singleLevelRef);
} else {
/*
* I need to let the AST produce it for me.
*/
retObject = nodeTree.execute(null, context);
}
} else if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTOBJECTARRAY) {
retObject = nodeTree.value_Renamed(context);
} else if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTINTEGERRANGE) {
retObject = nodeTree.value_Renamed(context);
} else if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTTRUE) {
retObject = staticObject;
} else if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTFALSE) {
retObject = staticObject;
} else if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTSTRINGLITERAL) {
retObject = nodeTree.value_Renamed(context);
} else if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTNUMBERLITERAL) {
retObject = staticObject;
} else if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTTEXT) {
/*
* this really shouldn't happen. text is just a thowaway arg for #foreach()
*/
try {
System.IO.StringWriter writer = new System.IO.StringWriter();
nodeTree.render(context, writer);
retObject = writer;
} catch (System.Exception e) {
rsvc.error("VMProxyArg.getObject() : error rendering reference : " + e);
}
} else if (type == GENERALSTATIC) {
retObject = staticObject;
} else {
rsvc.error("Unsupported VM arg type : VM arg = " + callerReference + " type = " + type + "( VMProxyArg.getObject() )");
}
return retObject;
} catch (MethodInvocationException mie) {
/*
* not ideal, but otherwise we propogate out to the
* VMContext, and the Context interface's put/get
* don't throw. So this is a the best compromise
* I can think of
*/
rsvc.error("VMProxyArg.getObject() : method invocation error getting value : " + mie);
return null;
}
}
/// <summary> computes the sum of the two nodes. Currently only integer operations are
/// supported.
/// </summary>
/// <returns>Integer object with value, or null
///
/// </returns>
public override System.Object value_Renamed(InternalContextAdapter context) {
/*
* get the two addends
*/
System.Object left = jjtGetChild(0).value_Renamed(context);
System.Object right = jjtGetChild(1).value_Renamed(context);
/*
* if either is null, lets log and bail
*/
if (left == null || right == null) {
rsvc.error((left == null?"Left":"Right") + " side (" + jjtGetChild((left == null?0:1)).literal() + ") of addition operation has null value." + " Operation not possible. " + context.CurrentTemplateName + " [line " + Line + ", column " + Column + "]");
return null;
}
/*
* if not an Integer, not much we can do either
*/
if (!(left is System.Int32) || !(right is System.Int32)) {
rsvc.error((!(left is System.Int32)?"Left":"Right") + " side of addition operation is not a valid type. " + "Currently only integers (1,2,3...) and Integer type is supported. " + context.CurrentTemplateName + " [line " + Line + ", column " + Column + "]");
return null;
}
return ((System.Int32) left) + ((System.Int32) right);
}
/// <summary> Invoked by VMContext when Context.put() is called for a proxied reference.
/// *
/// </summary>
/// <param name="context">context to modify via direct placement, or AST.setValue()
/// </param>
/// <param name="o"> new value of reference
/// </param>
/// <returns>Object currently null
///
/// </returns>
public virtual System.Object setObject(InternalContextAdapter context, System.Object o) {
/*
* if we are a reference, we could be updating a property
*/
if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTREFERENCE) {
if (numTreeChildren > 0) {
/*
* we are a property, and being updated such as
* #foo( $bar.BangStart)
*/
try {
((ASTReference) nodeTree).setValue(context, o);
} catch (MethodInvocationException mie) {
rsvc.error("VMProxyArg.getObject() : method invocation error setting value : " + mie);
}
} else {
/*
* we are a 'single level' reference like $foo, so we can set
* out context directly
*/
context.Put(singleLevelRef, o);
// alternate impl : usercontext.put( singleLevelRef, o);
}
} else {
/*
* if we aren't a reference, then we simply switch type,
* get a new value, and it doesn't go into the context
*
* in current impl, this shouldn't happen.
*/
type = GENERALSTATIC;
staticObject = o;
rsvc.error("VMProxyArg.setObject() : Programmer error : I am a constant! No setting! : " + contextReference + " / " + callerReference);
}
return null;
}
/// <summary> Return name of this Velocimacro.
/// </summary>
/// <summary> Velocimacros are always LINE
/// type directives.
/// </summary>
/// <summary> sets the directive name of this VM
/// </summary>
/// <summary> sets the array of arguments specified in the macro definition
/// </summary>
/// <summary> returns the number of ars needed for this VM
/// </summary>
/// <summary> Sets the orignal macro body. This is simply the cat of the macroArray, but the
/// Macro object creates this once during parsing, and everyone shares it.
/// Note : it must not be modified.
/// </summary>
/// <summary> Renders the macro using the context
/// </summary>
public override bool render(InternalContextAdapter context, System.IO.TextWriter writer, INode node) {
try {
/*
* it's possible the tree hasn't been parsed yet, so get
* the VMManager to parse and init it
*/
if (nodeTree != null) {
if (!init_Renamed_Field) {
nodeTree.init(context, rsvc);
init_Renamed_Field = true;
}
/*
* wrap the current context and add the VMProxyArg objects
*/
VMContext vmc = new VMContext(context, rsvc);
for (int i = 1; i < argArray.Length; i++) {
/*
* we can do this as VMProxyArgs don't change state. They change
* the context.
*/
VMProxyArg arg = (VMProxyArg) proxyArgHash[argArray[i]];
vmc.AddVMProxyArg(arg);
}
/*
* now render the VM
*/
nodeTree.render(vmc, writer);
} else {
rsvc.error("VM error : " + macroName + ". Null AST");
}
} catch (System.Exception e) {
/*
* if it's a MIE, it came from the render.... throw it...
*/
if (e is MethodInvocationException) {
throw (MethodInvocationException) e;
}
rsvc.error("VelocimacroProxy.render() : exception VM = #" + macroName + "() : " + StringUtils.stackTrace(e));
}
return true;
}
/// <summary> Return name of this directive.
/// </summary>
/// <summary> Return type of this directive.
/// </summary>
/// <summary> Store the literal rendition of a node using
/// the Node.literal().
/// </summary>
public override void init(RuntimeServices rs, InternalContextAdapter context, INode node) {
base.init(rs, context, node);
literalText = node.jjtGetChild(0).literal();
}
/// <summary> Throw the literal rendition of the block between
/// #literal()/#end into the writer.
/// </summary>
public override bool render(InternalContextAdapter context, System.IO.TextWriter writer, INode node) {
writer.Write(literalText);
return true;
}
/// <summary> iterates through the argument list and renders every
/// argument that is appropriate. Any non appropriate
/// arguments are logged, but render() continues.
/// </summary>
public override bool render(InternalContextAdapter context, System.IO.TextWriter writer, INode node) {
/*
* get our arguments and check them
*/
int argCount = node.jjtGetNumChildren();
for (int i = 0; i < argCount; i++) {
/*
* we only handle StringLiterals and References right now
*/
INode n = node.jjtGetChild(i);
if (n.Type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTSTRINGLITERAL || n.Type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTREFERENCE) {
if (!renderOutput(n, context, writer))
outputErrorToStream(writer, "error with arg " + i + " please see log.");
} else {
//UPGRADE_TODO: The equivalent in .NET for method 'java.Object.toString' may return a different value. 'ms-help://MS.VSCC/commoner/redir/redirect.htm?keyword="jlca1043"'
rsvc.error("#include() error : invalid argument type : " + n.ToString());
outputErrorToStream(writer, "error with arg " + i + " please see log.");
}
}
return true;
}
/*
* CODE FOR ALTERNATE IMPL : please ignore. I will remove when confortable with current.
*/
/// <summary> not used in current impl
/// *
/// Constructor for alternate impl where VelProxy class would make new
/// VMProxyArg objects, and use this contructor to avoid reparsing the
/// reference args
/// *
/// that impl also had the VMProxyArg carry it's context
/// </summary>
public VMProxyArg(VMProxyArg model, InternalContextAdapter c) {
usercontext = c;
contextReference = model.ContextReference;
callerReference = model.CallerReference;
nodeTree = model.NodeTree;
staticObject = model.StaticObject;
type = model.Type;
if (nodeTree != null)
numTreeChildren = nodeTree.jjtGetNumChildren();
if (type == NVelocity.Runtime.Parser.ParserTreeConstants.JJTREFERENCE) {
if (numTreeChildren == 0) {
/*
* use the reference node to do this...
*/
singleLevelRef = ((ASTReference) nodeTree).RootString;
}
}
}
/// <summary> Return name of this directive.
/// </summary>
/// <summary> Return type of this directive.
/// </summary>
/// <summary> simple init - init the tree and get the elementKey from
/// the AST
/// </summary>
public override void init(RuntimeServices rs, InternalContextAdapter context, INode node) {
base.init(rs, context, node);
/*
* get the msg, and add the space so we don't have to
* do it each time
*/
outputMsgStart = rsvc.getString(NVelocity.Runtime.RuntimeConstants_Fields.ERRORMSG_START);
outputMsgStart = outputMsgStart + " ";
outputMsgEnd = rsvc.getString(NVelocity.Runtime.RuntimeConstants_Fields.ERRORMSG_END);
outputMsgEnd = " " + outputMsgEnd;
}
public override Boolean render(InternalContextAdapter context, TextWriter writer, INode node) {
return true;
}
internal virtual void setup(InternalContextAdapter ica) {
/*
* if not parsed yet, parse!
*/
if (nodeTree == null)
parseTree(ica);
}
/// <summary> The major meat of VelocimacroProxy, init() checks the # of arguments, patches the
/// macro body, renders the macro into an AST, and then inits the AST, so it is ready
/// for quick rendering. Note that this is only AST dependant stuff. Not context.
/// </summary>
public override void init(RuntimeServices rs, InternalContextAdapter context, INode node) {
base.init(rs, context, node);
/*
* how many args did we get?
*/
int i = node.jjtGetNumChildren();
/*
* right number of args?
*/
if (NumArgs != i) {
rsvc.error("VM #" + macroName + ": error : too " + ((NumArgs > i)?"few":"many") + " arguments to macro. Wanted " + NumArgs + " got " + i);
return ;
}
/*
* get the argument list to the instance use of the VM
*/
callingArgs = getArgArray(node);
/*
* now proxy each arg in the context
*/
setupMacro(callingArgs, callingArgTypes);
return ;
}