public void visit(Node.CustomTag n) throws JasperException {
n.setCustomTagParent(parent);
Node.CustomTag tmpParent = parent;
parent = n;
visitBody(n);
parent = tmpParent;
n.setNumCount(new Integer(count++));
}
TagPluginContextImpl(Node.CustomTag n, PageInfo pageInfo) {
this.node = n;
this.pageInfo = pageInfo;
curNodes = new Node.Nodes();
n.setAtETag(curNodes);
curNodes = new Node.Nodes();
n.setAtSTag(curNodes);
n.setUseTagPlugin(true);
pluginAttributes = new HashMap();
}
/**
* Invoke tag plugin for the given custom tag, if a plugin exists for the custom tag's tag
* handler.
*
* <p>The given custom tag node will be manipulated by the plugin.
*/
private void invokePlugin(Node.CustomTag n) {
TagPlugin tagPlugin = (TagPlugin) tagPlugins.get(n.getTagHandlerClass().getName());
if (tagPlugin == null) {
return;
}
TagPluginContext tagPluginContext = new TagPluginContextImpl(n, pageInfo);
n.setTagPluginContext(tagPluginContext);
tagPlugin.doTag(tagPluginContext);
}
private void setScriptingVars(Node.CustomTag n, int scope) throws JasperException {
TagVariableInfo[] tagVarInfos = n.getTagVariableInfos();
VariableInfo[] varInfos = n.getVariableInfos();
if (tagVarInfos.length == 0 && varInfos.length == 0) {
return;
}
Vector vec = new Vector();
Integer ownRange = null;
if (scope == VariableInfo.AT_BEGIN || scope == VariableInfo.AT_END) {
Node.CustomTag parent = n.getCustomTagParent();
if (parent == null) ownRange = MAX_SCOPE;
else ownRange = parent.getNumCount();
} else {
// NESTED
ownRange = n.getNumCount();
}
if (varInfos.length > 0) {
for (int i = 0; i < varInfos.length; i++) {
if (varInfos[i].getScope() != scope || !varInfos[i].getDeclare()) {
continue;
}
String varName = varInfos[i].getVarName();
Integer currentRange = scriptVars.get(varName);
if (currentRange == null || ownRange.compareTo(currentRange) > 0) {
scriptVars.put(varName, ownRange);
vec.add(varInfos[i]);
}
}
} else {
for (int i = 0; i < tagVarInfos.length; i++) {
if (tagVarInfos[i].getScope() != scope || !tagVarInfos[i].getDeclare()) {
continue;
}
String varName = tagVarInfos[i].getNameGiven();
if (varName == null) {
varName = n.getTagData().getAttributeString(tagVarInfos[i].getNameFromAttribute());
if (varName == null) {
err.jspError(
n,
"jsp.error.scripting.variable.missing_name",
tagVarInfos[i].getNameFromAttribute());
}
}
Integer currentRange = scriptVars.get(varName);
if (currentRange == null || ownRange.compareTo(currentRange) > 0) {
scriptVars.put(varName, ownRange);
vec.add(tagVarInfos[i]);
}
}
}
n.setScriptingVars(vec, scope);
}
public TagPluginContext getParentContext() {
Node parent = node.getParent();
if (!(parent instanceof Node.CustomTag)) {
return null;
}
return ((Node.CustomTag) parent).getTagPluginContext();
}
private Node.JspAttribute getNodeAttribute(String attribute) {
Node.JspAttribute[] attrs = node.getJspAttributes();
for (int i = 0; attrs != null && i < attrs.length; i++) {
if (attrs[i].getName().equals(attribute)) {
return attrs[i];
}
}
return null;
}
public void generateBody() {
// Since we'll generate the body anyway, this is really a nop,
// except for the fact that it lets us put the Java sources the
// plugins produce in the correct order (w.r.t the body).
curNodes = node.getAtETag();
}
public void dontUseTagPlugin() {
node.setUseTagPlugin(false);
}
public void generateAttribute(String attributeName) {
curNodes.add(new Node.AttributeGenerator(node.getStart(), attributeName, node));
}
public void generateJavaSource(String sourceCode) {
curNodes.add(new Node.Scriptlet(sourceCode, node.getStart(), null));
}
public void generateDeclaration(String id, String text) {
if (pageInfo.isPluginDeclared(id)) {
return;
}
curNodes.add(new Node.Declaration(text, node.getStart(), null));
}
public boolean isScriptless() {
return node.getChildInfo().isScriptless();
}