| Methods Summary |
|---|
| private void | compileTagHandlerPoolList(Node.Nodes page)Compiles list of tag handler pool names.
class TagHandlerPoolVisitor extends Node.Visitor {
private Vector names;
/*
* Constructor
*
* @param v Vector of tag handler pool names to populate
*/
TagHandlerPoolVisitor(Vector v) {
names = v;
}
/*
* Gets the name of the tag handler pool for the given custom tag
* and adds it to the list of tag handler pool names unless it is
* already contained in it.
*/
public void visit(Node.CustomTag n) throws JasperException {
if (!n.implementsSimpleTag()) {
String name = createTagHandlerPoolName(n.getPrefix(), n
.getLocalName(), n.getAttributes(), n
.hasEmptyBody());
n.setTagHandlerPoolName(name);
if (!names.contains(name)) {
names.add(name);
}
}
visitBody(n);
}
/*
* Creates the name of the tag handler pool whose tag handlers may
* be (re)used to service this action.
*
* @return The name of the tag handler pool
*/
private String createTagHandlerPoolName(String prefix,
String shortName, Attributes attrs, boolean hasEmptyBody) {
String poolName = null;
poolName = "_jspx_tagPool_" + prefix + "_" + shortName;
if (attrs != null) {
String[] attrNames = new String[attrs.getLength()];
for (int i = 0; i < attrNames.length; i++) {
attrNames[i] = attrs.getQName(i);
}
Arrays.sort(attrNames, Collections.reverseOrder());
for (int i = 0; i < attrNames.length; i++) {
poolName = poolName + "_" + attrNames[i];
}
}
if (hasEmptyBody) {
poolName = poolName + "_nobody";
}
return JspUtil.makeJavaIdentifier(poolName);
}
}
page.visit(new TagHandlerPoolVisitor(tagHandlerPoolNames));
|
| private java.lang.String | createJspId()
if (this.jspIdPrefix == null) {
StringBuffer sb = new StringBuffer(32);
String name = ctxt.getServletJavaFileName();
sb.append("jsp_").append(Math.abs(name.hashCode())).append('_");
this.jspIdPrefix = sb.toString();
}
return this.jspIdPrefix + (this.jspId++);
|
| private void | declareTemporaryScriptingVars(Node.Nodes page)
class ScriptingVarVisitor extends Node.Visitor {
private Vector vars;
ScriptingVarVisitor() {
vars = new Vector();
}
public void visit(Node.CustomTag n) throws JasperException {
if (n.getCustomNestingLevel() > 0) {
TagVariableInfo[] tagVarInfos = n.getTagVariableInfos();
VariableInfo[] varInfos = n.getVariableInfos();
if (varInfos.length > 0) {
for (int i = 0; i < varInfos.length; i++) {
String varName = varInfos[i].getVarName();
String tmpVarName = "_jspx_" + varName + "_"
+ n.getCustomNestingLevel();
if (!vars.contains(tmpVarName)) {
vars.add(tmpVarName);
out.printin(varInfos[i].getClassName());
out.print(" ");
out.print(tmpVarName);
out.print(" = ");
out.print(null);
out.println(";");
}
}
} else {
for (int i = 0; i < tagVarInfos.length; i++) {
String varName = tagVarInfos[i].getNameGiven();
if (varName == null) {
varName = n.getTagData().getAttributeString(
tagVarInfos[i].getNameFromAttribute());
} else if (tagVarInfos[i].getNameFromAttribute() != null) {
// alias
continue;
}
String tmpVarName = "_jspx_" + varName + "_"
+ n.getCustomNestingLevel();
if (!vars.contains(tmpVarName)) {
vars.add(tmpVarName);
out.printin(tagVarInfos[i].getClassName());
out.print(" ");
out.print(tmpVarName);
out.print(" = ");
out.print(null);
out.println(";");
}
}
}
}
visitBody(n);
}
}
page.visit(new ScriptingVarVisitor());
|
| static java.lang.String | escape(java.lang.String s)
if (s == null)
return "";
StringBuffer b = new StringBuffer();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (c == '"")
b.append('\\").append('"");
else if (c == '\\")
b.append('\\").append('\\");
else if (c == '\n")
b.append('\\").append('n");
else if (c == '\r")
b.append('\\").append('r");
else
b.append(c);
}
return b.toString();
|
| private void | genCommonPostamble()Common part of postamble, shared by both servlets and tag files.
// Append any methods that were generated in the buffer.
for (int i = 0; i < methodsBuffered.size(); i++) {
GenBuffer methodBuffer = (GenBuffer) methodsBuffered.get(i);
methodBuffer.adjustJavaLines(out.getJavaLine() - 1);
out.printMultiLn(methodBuffer.toString());
}
// Append the helper class
if (fragmentHelperClass.isUsed()) {
fragmentHelperClass.generatePostamble();
fragmentHelperClass.adjustJavaLines(out.getJavaLine() - 1);
out.printMultiLn(fragmentHelperClass.toString());
}
// Append char array declarations
if (charArrayBuffer != null) {
out.printMultiLn(charArrayBuffer.toString());
}
// Close the class definition
out.popIndent();
out.printil("}");
|
| private void | genPreambleClassVariableDeclarations(java.lang.String className)Declare tag handler pools (tags of the same type and with the same
attribute set share the same tag handler pool) (shared by servlet and tag
handler preamble generation)
In JSP 2.1, we also scope an instance of ExpressionFactory
if (isPoolingEnabled && !tagHandlerPoolNames.isEmpty()) {
for (int i = 0; i < tagHandlerPoolNames.size(); i++) {
out.printil("private org.apache.jasper.runtime.TagHandlerPool "
+ tagHandlerPoolNames.elementAt(i) + ";");
}
out.println();
}
out.printin("private javax.el.ExpressionFactory ");
out.print(VAR_EXPRESSIONFACTORY);
out.println(";");
out.printin("private org.apache.AnnotationProcessor ");
out.print(VAR_ANNOTATIONPROCESSOR);
out.println(";");
out.println();
|
| private void | genPreambleImports()Generate preamble imports (shared by servlet and tag handler preamble
generation)
Iterator iter = pageInfo.getImports().iterator();
while (iter.hasNext()) {
out.printin("import ");
out.print((String) iter.next());
out.println(";");
}
out.println();
|
| private void | genPreambleMethods()Declare general-purpose methods (shared by servlet and tag handler
preamble generation)
// Method used to get compile time file dependencies
out.printil("public Object getDependants() {");
out.pushIndent();
out.printil("return _jspx_dependants;");
out.popIndent();
out.printil("}");
out.println();
generateInit();
generateDestroy();
|
| private void | genPreamblePackage(java.lang.String packageName)Generate preamble package name (shared by servlet and tag handler
preamble generation)
if (!"".equals(packageName) && packageName != null) {
out.printil("package " + packageName + ";");
out.println();
}
|
| private void | genPreambleStaticInitializers()Generation of static initializers in preamble. For example, dependant
list, el function map, prefix map. (shared by servlet and tag handler
preamble generation)
out.printil("private static final JspFactory _jspxFactory = JspFactory.getDefaultFactory();");
out.println();
// Static data for getDependants()
out.printil("private static java.util.List _jspx_dependants;");
out.println();
List dependants = pageInfo.getDependants();
Iterator iter = dependants.iterator();
if (!dependants.isEmpty()) {
out.printil("static {");
out.pushIndent();
out.printin("_jspx_dependants = new java.util.ArrayList(");
out.print("" + dependants.size());
out.println(");");
while (iter.hasNext()) {
out.printin("_jspx_dependants.add(\"");
out.print((String) iter.next());
out.println("\");");
}
out.popIndent();
out.printil("}");
out.println();
}
|
| public static void | generate(ServletWriter out, Compiler compiler, Node.Nodes page)The main entry for Generator.
Generator gen = new Generator(out, compiler);
if (gen.isPoolingEnabled) {
gen.compileTagHandlerPoolList(page);
}
if (gen.ctxt.isTagFile()) {
JasperTagInfo tagInfo = (JasperTagInfo) gen.ctxt.getTagInfo();
gen.generateTagHandlerPreamble(tagInfo, page);
if (gen.ctxt.isPrototypeMode()) {
return;
}
gen.generateXmlProlog(page);
gen.fragmentHelperClass.generatePreamble();
page.visit(gen.new GenerateVisitor(gen.ctxt.isTagFile(), out,
gen.methodsBuffered, gen.fragmentHelperClass, gen.ctxt
.getClassLoader(), tagInfo));
gen.generateTagHandlerPostamble(tagInfo);
} else {
gen.generatePreamble(page);
gen.generateXmlProlog(page);
gen.fragmentHelperClass.generatePreamble();
page.visit(gen.new GenerateVisitor(gen.ctxt.isTagFile(), out,
gen.methodsBuffered, gen.fragmentHelperClass, gen.ctxt
.getClassLoader(), null));
gen.generatePostamble(page);
}
|
| private void | generateConstructor(java.lang.String className)
out.printil("public " + className + "() {");
out.printil("}");
out.println();
|
| private void | generateDeclarations(Node.Nodes page)Generates declarations. This includes "info" of the page directive, and
scriptlet declarations.
class DeclarationVisitor extends Node.Visitor {
private boolean getServletInfoGenerated = false;
/*
* Generates getServletInfo() method that returns the value of the
* page directive's 'info' attribute, if present.
*
* The Validator has already ensured that if the translation unit
* contains more than one page directive with an 'info' attribute,
* their values match.
*/
public void visit(Node.PageDirective n) throws JasperException {
if (getServletInfoGenerated) {
return;
}
String info = n.getAttributeValue("info");
if (info == null)
return;
getServletInfoGenerated = true;
out.printil("public String getServletInfo() {");
out.pushIndent();
out.printin("return ");
out.print(quote(info));
out.println(";");
out.popIndent();
out.printil("}");
out.println();
}
public void visit(Node.Declaration n) throws JasperException {
n.setBeginJavaLine(out.getJavaLine());
out.printMultiLn(new String(n.getText()));
out.println();
n.setEndJavaLine(out.getJavaLine());
}
// Custom Tags may contain declarations from tag plugins.
public void visit(Node.CustomTag n) throws JasperException {
if (n.useTagPlugin()) {
if (n.getAtSTag() != null) {
n.getAtSTag().visit(this);
}
visitBody(n);
if (n.getAtETag() != null) {
n.getAtETag().visit(this);
}
} else {
visitBody(n);
}
}
}
out.println();
page.visit(new DeclarationVisitor());
|
| private void | generateDestroy()Generates the _jspDestroy() method which is responsible for calling the
release() method on every tag handler in any of the tag handler pools.
out.printil("public void _jspDestroy() {");
out.pushIndent();
if (isPoolingEnabled) {
for (int i = 0; i < tagHandlerPoolNames.size(); i++) {
out.printin((String) tagHandlerPoolNames.elementAt(i));
out.println(".release();");
}
}
out.popIndent();
out.printil("}");
out.println();
|
| private void | generateInit()Generates the _jspInit() method for instantiating the tag handler pools.
For tag file, _jspInit has to be invoked manually, and the ServletConfig
object explicitly passed.
In JSP 2.1, we also instantiate an ExpressionFactory
if (ctxt.isTagFile()) {
out.printil("private void _jspInit(ServletConfig config) {");
} else {
out.printil("public void _jspInit() {");
}
out.pushIndent();
if (isPoolingEnabled) {
for (int i = 0; i < tagHandlerPoolNames.size(); i++) {
out.printin(tagHandlerPoolNames.elementAt(i));
out.print(" = org.apache.jasper.runtime.TagHandlerPool.getTagHandlerPool(");
if (ctxt.isTagFile()) {
out.print("config");
} else {
out.print("getServletConfig()");
}
out.println(");");
}
}
out.printin(VAR_EXPRESSIONFACTORY);
out.print(" = _jspxFactory.getJspApplicationContext(");
if (ctxt.isTagFile()) {
out.print("config");
} else {
out.print("getServletConfig()");
}
out.println(".getServletContext()).getExpressionFactory();");
out.printin(VAR_ANNOTATIONPROCESSOR);
out.print(" = (org.apache.AnnotationProcessor) ");
if (ctxt.isTagFile()) {
out.print("config");
} else {
out.print("getServletConfig()");
}
out.println(".getServletContext().getAttribute(org.apache.AnnotationProcessor.class.getName());");
out.popIndent();
out.printil("}");
out.println();
|
| private static void | generateLocalVariables(ServletWriter out, Node n)
Node.ChildInfo ci;
if (n instanceof Node.CustomTag) {
ci = ((Node.CustomTag) n).getChildInfo();
} else if (n instanceof Node.JspBody) {
ci = ((Node.JspBody) n).getChildInfo();
} else if (n instanceof Node.NamedAttribute) {
ci = ((Node.NamedAttribute) n).getChildInfo();
} else {
// Cannot access err since this method is static, but at
// least flag an error.
throw new JasperException("Unexpected Node Type");
// err.getString(
// "jsp.error.internal.unexpected_node_type" ) );
}
if (ci.hasUseBean()) {
out
.printil("HttpSession session = _jspx_page_context.getSession();");
out
.printil("ServletContext application = _jspx_page_context.getServletContext();");
}
if (ci.hasUseBean() || ci.hasIncludeAction() || ci.hasSetProperty()
|| ci.hasParamAction()) {
out
.printil("HttpServletRequest request = (HttpServletRequest)_jspx_page_context.getRequest();");
}
if (ci.hasIncludeAction()) {
out
.printil("HttpServletResponse response = (HttpServletResponse)_jspx_page_context.getResponse();");
}
|
| private void | generatePageScopedVariables(JasperTagInfo tagInfo)
// "normal" attributes
TagAttributeInfo[] attrInfos = tagInfo.getAttributes();
boolean variableMapperVar = false;
for (int i = 0; i < attrInfos.length; i++) {
String attrName = attrInfos[i].getName();
// handle assigning deferred vars to VariableMapper, storing
// previous values under '_el_ve[i]' for later re-assignment
if (attrInfos[i].isDeferredValue() || attrInfos[i].isDeferredMethod()) {
// we need to scope the modified VariableMapper for consistency and performance
if (!variableMapperVar) {
out.printil("javax.el.VariableMapper _el_variablemapper = jspContext.getELContext().getVariableMapper();");
variableMapperVar = true;
}
out.printin("javax.el.ValueExpression _el_ve");
out.print(i);
out.print(" = _el_variablemapper.setVariable(");
out.print(quote(attrName));
out.print(',");
if (attrInfos[i].isDeferredMethod()) {
out.print(VAR_EXPRESSIONFACTORY);
out.print(".createValueExpression(");
out.print(toGetterMethod(attrName));
out.print(",javax.el.MethodExpression.class)");
} else {
out.print(toGetterMethod(attrName));
}
out.println(");");
} else {
out.printil("if( " + toGetterMethod(attrName) + " != null ) ");
out.pushIndent();
out.printin("_jspx_page_context.setAttribute(");
out.print(quote(attrName));
out.print(", ");
out.print(toGetterMethod(attrName));
out.println(");");
out.popIndent();
}
}
// Expose the Map containing dynamic attributes as a page-scoped var
if (tagInfo.hasDynamicAttributes()) {
out.printin("_jspx_page_context.setAttribute(\"");
out.print(tagInfo.getDynamicAttributesMapName());
out.print("\", _jspx_dynamic_attrs);");
}
|
| private void | generatePostamble(Node.Nodes page)Generates the ending part of the static portion of the servlet.
out.popIndent();
out.printil("} catch (Throwable t) {");
out.pushIndent();
out.printil("if (!(t instanceof SkipPageException)){");
out.pushIndent();
out.printil("out = _jspx_out;");
out.printil("if (out != null && out.getBufferSize() != 0)");
out.pushIndent();
out.printil("try { out.clearBuffer(); } catch (java.io.IOException e) {}");
out.popIndent();
out
.printil("if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);");
out.popIndent();
out.printil("}");
out.popIndent();
out.printil("} finally {");
out.pushIndent();
out
.printil("_jspxFactory.releasePageContext(_jspx_page_context);");
out.popIndent();
out.printil("}");
// Close the service method
out.popIndent();
out.printil("}");
// Generated methods, helper classes, etc.
genCommonPostamble();
|
| private void | generatePreamble(Node.Nodes page)Generates the beginning of the static portion of the servlet.
String servletPackageName = ctxt.getServletPackageName();
String servletClassName = ctxt.getServletClassName();
String serviceMethodName = Constants.SERVICE_METHOD_NAME;
// First the package name:
genPreamblePackage(servletPackageName);
// Generate imports
genPreambleImports();
// Generate class declaration
out.printin("public final class ");
out.print(servletClassName);
out.print(" extends ");
out.println(pageInfo.getExtends());
out.printin(" implements org.apache.jasper.runtime.JspSourceDependent");
if (!pageInfo.isThreadSafe()) {
out.println(",");
out.printin(" SingleThreadModel");
}
out.println(" {");
out.pushIndent();
// Class body begins here
generateDeclarations(page);
// Static initializations here
genPreambleStaticInitializers();
// Class variable declarations
genPreambleClassVariableDeclarations(servletClassName);
// Constructor
// generateConstructor(className);
// Methods here
genPreambleMethods();
// Now the service method
out.printin("public void ");
out.print(serviceMethodName);
out.println("(HttpServletRequest request, HttpServletResponse response)");
out.println(" throws java.io.IOException, ServletException {");
out.pushIndent();
out.println();
// Local variable declarations
out.printil("PageContext pageContext = null;");
if (pageInfo.isSession())
out.printil("HttpSession session = null;");
if (pageInfo.isErrorPage()) {
out.printil("Throwable exception = org.apache.jasper.runtime.JspRuntimeLibrary.getThrowable(request);");
out.printil("if (exception != null) {");
out.pushIndent();
out.printil("response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);");
out.popIndent();
out.printil("}");
}
out.printil("ServletContext application = null;");
out.printil("ServletConfig config = null;");
out.printil("JspWriter out = null;");
out.printil("Object page = this;");
out.printil("JspWriter _jspx_out = null;");
out.printil("PageContext _jspx_page_context = null;");
out.println();
declareTemporaryScriptingVars(page);
out.println();
out.printil("try {");
out.pushIndent();
out.printin("response.setContentType(");
out.print(quote(pageInfo.getContentType()));
out.println(");");
if (ctxt.getOptions().isXpoweredBy()) {
out.printil("response.addHeader(\"X-Powered-By\", \"JSP/2.1\");");
}
out
.printil("pageContext = _jspxFactory.getPageContext(this, request, response,");
out.printin("\t\t\t");
out.print(quote(pageInfo.getErrorPage()));
out.print(", " + pageInfo.isSession());
out.print(", " + pageInfo.getBuffer());
out.print(", " + pageInfo.isAutoFlush());
out.println(");");
out.printil("_jspx_page_context = pageContext;");
out.printil("application = pageContext.getServletContext();");
out.printil("config = pageContext.getServletConfig();");
if (pageInfo.isSession())
out.printil("session = pageContext.getSession();");
out.printil("out = pageContext.getOut();");
out.printil("_jspx_out = out;");
out.println();
|
| public void | generateSetDynamicAttribute()
out
.printil("public void setDynamicAttribute(String uri, String localName, Object value) throws JspException {");
out.pushIndent();
/*
* According to the spec, only dynamic attributes with no uri are to be
* present in the Map; all other dynamic attributes are ignored.
*/
out.printil("if (uri == null)");
out.pushIndent();
out.printil("_jspx_dynamic_attrs.put(localName, value);");
out.popIndent();
out.popIndent();
out.printil("}");
|
| private void | generateSetJspContext(javax.servlet.jsp.tagext.TagInfo tagInfo)
boolean nestedSeen = false;
boolean atBeginSeen = false;
boolean atEndSeen = false;
// Determine if there are any aliases
boolean aliasSeen = false;
TagVariableInfo[] tagVars = tagInfo.getTagVariableInfos();
for (int i = 0; i < tagVars.length; i++) {
if (tagVars[i].getNameFromAttribute() != null
&& tagVars[i].getNameGiven() != null) {
aliasSeen = true;
break;
}
}
if (aliasSeen) {
out
.printil("public void setJspContext(JspContext ctx, java.util.Map aliasMap) {");
} else {
out.printil("public void setJspContext(JspContext ctx) {");
}
out.pushIndent();
out.printil("super.setJspContext(ctx);");
out.printil("java.util.ArrayList _jspx_nested = null;");
out.printil("java.util.ArrayList _jspx_at_begin = null;");
out.printil("java.util.ArrayList _jspx_at_end = null;");
for (int i = 0; i < tagVars.length; i++) {
switch (tagVars[i].getScope()) {
case VariableInfo.NESTED:
if (!nestedSeen) {
out.printil("_jspx_nested = new java.util.ArrayList();");
nestedSeen = true;
}
out.printin("_jspx_nested.add(");
break;
case VariableInfo.AT_BEGIN:
if (!atBeginSeen) {
out.printil("_jspx_at_begin = new java.util.ArrayList();");
atBeginSeen = true;
}
out.printin("_jspx_at_begin.add(");
break;
case VariableInfo.AT_END:
if (!atEndSeen) {
out.printil("_jspx_at_end = new java.util.ArrayList();");
atEndSeen = true;
}
out.printin("_jspx_at_end.add(");
break;
} // switch
out.print(quote(tagVars[i].getNameGiven()));
out.println(");");
}
if (aliasSeen) {
out
.printil("this.jspContext = new org.apache.jasper.runtime.JspContextWrapper(ctx, _jspx_nested, _jspx_at_begin, _jspx_at_end, aliasMap);");
} else {
out
.printil("this.jspContext = new org.apache.jasper.runtime.JspContextWrapper(ctx, _jspx_nested, _jspx_at_begin, _jspx_at_end, null);");
}
out.popIndent();
out.printil("}");
out.println();
out.printil("public JspContext getJspContext() {");
out.pushIndent();
out.printil("return this.jspContext;");
out.popIndent();
out.printil("}");
|
| private void | generateTagHandlerAttributes(javax.servlet.jsp.tagext.TagInfo tagInfo)Generates declarations for tag handler attributes, and defines the getter
and setter methods for each.
if (tagInfo.hasDynamicAttributes()) {
out.printil("private java.util.HashMap _jspx_dynamic_attrs = new java.util.HashMap();");
}
// Declare attributes
TagAttributeInfo[] attrInfos = tagInfo.getAttributes();
for (int i = 0; i < attrInfos.length; i++) {
out.printin("private ");
if (attrInfos[i].isFragment()) {
out.print("javax.servlet.jsp.tagext.JspFragment ");
} else {
out.print(JspUtil.toJavaSourceType(attrInfos[i].getTypeName()));
out.print(" ");
}
out.print(attrInfos[i].getName());
out.println(";");
}
out.println();
// Define attribute getter and setter methods
if (attrInfos != null) {
for (int i = 0; i < attrInfos.length; i++) {
// getter method
out.printin("public ");
if (attrInfos[i].isFragment()) {
out.print("javax.servlet.jsp.tagext.JspFragment ");
} else {
out.print(JspUtil.toJavaSourceType(attrInfos[i]
.getTypeName()));
out.print(" ");
}
out.print(toGetterMethod(attrInfos[i].getName()));
out.println(" {");
out.pushIndent();
out.printin("return this.");
out.print(attrInfos[i].getName());
out.println(";");
out.popIndent();
out.printil("}");
out.println();
// setter method
out.printin("public void ");
out.print(toSetterMethodName(attrInfos[i].getName()));
if (attrInfos[i].isFragment()) {
out.print("(javax.servlet.jsp.tagext.JspFragment ");
} else {
out.print("(");
out.print(JspUtil.toJavaSourceType(attrInfos[i]
.getTypeName()));
out.print(" ");
}
out.print(attrInfos[i].getName());
out.println(") {");
out.pushIndent();
out.printin("this.");
out.print(attrInfos[i].getName());
out.print(" = ");
out.print(attrInfos[i].getName());
out.println(";");
if (ctxt.isTagFile()) {
// Tag files should also set jspContext attributes
out.printin("jspContext.setAttribute(\"");
out.print(attrInfos[i].getName());
out.print("\", ");
out.print(attrInfos[i].getName());
out.println(");");
}
out.popIndent();
out.printil("}");
out.println();
}
}
|
| private void | generateTagHandlerPostamble(javax.servlet.jsp.tagext.TagInfo tagInfo)
out.popIndent();
// Have to catch Throwable because a classic tag handler
// helper method is declared to throw Throwable.
out.printil("} catch( Throwable t ) {");
out.pushIndent();
out.printil("if( t instanceof SkipPageException )");
out.printil(" throw (SkipPageException) t;");
out.printil("if( t instanceof java.io.IOException )");
out.printil(" throw (java.io.IOException) t;");
out.printil("if( t instanceof IllegalStateException )");
out.printil(" throw (IllegalStateException) t;");
out.printil("if( t instanceof JspException )");
out.printil(" throw (JspException) t;");
out.printil("throw new JspException(t);");
out.popIndent();
out.printil("} finally {");
out.pushIndent();
// handle restoring VariableMapper
TagAttributeInfo[] attrInfos = tagInfo.getAttributes();
for (int i = 0; i < attrInfos.length; i++) {
if (attrInfos[i].isDeferredMethod() || attrInfos[i].isDeferredValue()) {
out.printin("_el_variablemapper.setVariable(");
out.print(quote(attrInfos[i].getName()));
out.print(",_el_ve");
out.print(i);
out.println(");");
}
}
// restore nested JspContext on ELContext
out.printil("jspContext.getELContext().putContext(JspContext.class,super.getJspContext());");
out.printil("((org.apache.jasper.runtime.JspContextWrapper) jspContext).syncEndTagFile();");
if (isPoolingEnabled && !tagHandlerPoolNames.isEmpty()) {
out.printil("_jspDestroy();");
}
out.popIndent();
out.printil("}");
// Close the doTag method
out.popIndent();
out.printil("}");
// Generated methods, helper classes, etc.
genCommonPostamble();
|
| private void | generateTagHandlerPreamble(JasperTagInfo tagInfo, Node.Nodes tag)
// Generate package declaration
String className = tagInfo.getTagClassName();
int lastIndex = className.lastIndexOf('.");
if (lastIndex != -1) {
String pkgName = className.substring(0, lastIndex);
genPreamblePackage(pkgName);
className = className.substring(lastIndex + 1);
}
// Generate imports
genPreambleImports();
// Generate class declaration
out.printin("public final class ");
out.println(className);
out.printil(" extends javax.servlet.jsp.tagext.SimpleTagSupport");
out.printin(" implements org.apache.jasper.runtime.JspSourceDependent");
if (tagInfo.hasDynamicAttributes()) {
out.println(",");
out.printin(" javax.servlet.jsp.tagext.DynamicAttributes");
}
out.println(" {");
out.println();
out.pushIndent();
/*
* Class body begins here
*/
generateDeclarations(tag);
// Static initializations here
genPreambleStaticInitializers();
out.printil("private JspContext jspContext;");
// Declare writer used for storing result of fragment/body invocation
// if 'varReader' or 'var' attribute is specified
out.printil("private java.io.Writer _jspx_sout;");
// Class variable declarations
genPreambleClassVariableDeclarations(tagInfo.getTagName());
generateSetJspContext(tagInfo);
// Tag-handler specific declarations
generateTagHandlerAttributes(tagInfo);
if (tagInfo.hasDynamicAttributes())
generateSetDynamicAttribute();
// Methods here
genPreambleMethods();
// Now the doTag() method
out.printil("public void doTag() throws JspException, java.io.IOException {");
if (ctxt.isPrototypeMode()) {
out.printil("}");
out.popIndent();
out.printil("}");
return;
}
out.pushIndent();
/*
* According to the spec, 'pageContext' must not be made available as an
* implicit object in tag files. Declare _jspx_page_context, so we can
* share the code generator with JSPs.
*/
out.printil("PageContext _jspx_page_context = (PageContext)jspContext;");
// Declare implicit objects.
out.printil("HttpServletRequest request = "
+ "(HttpServletRequest) _jspx_page_context.getRequest();");
out.printil("HttpServletResponse response = "
+ "(HttpServletResponse) _jspx_page_context.getResponse();");
out.printil("HttpSession session = _jspx_page_context.getSession();");
out.printil("ServletContext application = _jspx_page_context.getServletContext();");
out.printil("ServletConfig config = _jspx_page_context.getServletConfig();");
out.printil("JspWriter out = jspContext.getOut();");
out.printil("_jspInit(config);");
// set current JspContext on ELContext
out.printil("jspContext.getELContext().putContext(JspContext.class,jspContext);");
generatePageScopedVariables(tagInfo);
declareTemporaryScriptingVars(tag);
out.println();
out.printil("try {");
out.pushIndent();
|
| private void | generateXmlProlog(Node.Nodes page)Generates an XML Prolog, which includes an XML declaration and an XML
doctype declaration.
/*
* An XML declaration is generated under the following conditions: -
* 'omit-xml-declaration' attribute of <jsp:output> action is set to
* "no" or "false" - JSP document without a <jsp:root>
*/
String omitXmlDecl = pageInfo.getOmitXmlDecl();
if ((omitXmlDecl != null && !JspUtil.booleanValue(omitXmlDecl))
|| (omitXmlDecl == null && page.getRoot().isXmlSyntax()
&& !pageInfo.hasJspRoot() && !ctxt.isTagFile())) {
String cType = pageInfo.getContentType();
String charSet = cType.substring(cType.indexOf("charset=") + 8);
out.printil("out.write(\"<?xml version=\\\"1.0\\\" encoding=\\\""
+ charSet + "\\\"?>\\n\");");
}
/*
* Output a DOCTYPE declaration if the doctype-root-element appears. If
* doctype-public appears: <!DOCTYPE name PUBLIC "doctypePublic"
* "doctypeSystem"> else <!DOCTYPE name SYSTEM "doctypeSystem" >
*/
String doctypeName = pageInfo.getDoctypeName();
if (doctypeName != null) {
String doctypePublic = pageInfo.getDoctypePublic();
String doctypeSystem = pageInfo.getDoctypeSystem();
out.printin("out.write(\"<!DOCTYPE ");
out.print(doctypeName);
if (doctypePublic == null) {
out.print(" SYSTEM \\\"");
} else {
out.print(" PUBLIC \\\"");
out.print(doctypePublic);
out.print("\\\" \\\"");
}
out.print(doctypeSystem);
out.println("\\\">\\n\");");
}
|
| static java.lang.String | quote(java.lang.String s)
if (s == null)
return "null";
return '"" + escape(s) + '"";
|
| static java.lang.String | quote(char c)Single quote and escape a character
StringBuffer b = new StringBuffer();
b.append('\'");
if (c == '\'")
b.append('\\").append('\'");
else if (c == '\\")
b.append('\\").append('\\");
else if (c == '\n")
b.append('\\").append('n");
else if (c == '\r")
b.append('\\").append('r");
else
b.append(c);
b.append('\'");
return b.toString();
|
| private java.lang.String | toGetterMethod(java.lang.String attrName)
char[] attrChars = attrName.toCharArray();
attrChars[0] = Character.toUpperCase(attrChars[0]);
return "get" + new String(attrChars) + "()";
|
| private java.lang.String | toSetterMethodName(java.lang.String attrName)
char[] attrChars = attrName.toCharArray();
attrChars[0] = Character.toUpperCase(attrChars[0]);
return "set" + new String(attrChars);
|
