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Resin Java Application Server
/*
* Copyright (c) 1998-2018 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.jsp.java;
import com.caucho.el.Expr;
import com.caucho.jsp.JspLineParseException;
import com.caucho.jsp.JspParseException;
import com.caucho.jsp.JspParser;
import com.caucho.jsp.Namespace;
import com.caucho.jsp.ParseState;
import com.caucho.jsp.TagInstance;
import com.caucho.util.CharBuffer;
import com.caucho.util.CompileException;
import com.caucho.util.L10N;
import com.caucho.util.LineCompileException;
import com.caucho.vfs.Path;
import com.caucho.vfs.WriteStream;
import com.caucho.xml.QName;
import com.caucho.xml.XmlChar;
import com.caucho.xpath.NamespaceContext;
import com.caucho.xpath.XPath;
import javax.el.MethodExpression;
import javax.el.ValueExpression;
import javax.servlet.jsp.tagext.JspFragment;
import javax.servlet.jsp.tagext.TagAttributeInfo;
import java.beans.PropertyEditor;
import java.beans.PropertyEditorManager;
import java.io.IOException;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
public abstract class JspNode {
static final L10N L = new L10N(JspNode.class);
private static final Logger log
= Logger.getLogger(JspNode.class.getName());
static final String JSP_NS = JspParser.JSP_NS;
protected Path _sourcePath;
protected String _filename;
protected int _startLine;
protected int _endAttributeLine;
protected int _endLine;
protected Namespace _ns;
protected JavaJspGenerator _gen;
protected ParseState _parseState;
protected QName _name;
protected JspNode _parent;
protected JspNode()
{
}
/**
* Sets the Java generator.
*/
public void setGenerator(JavaJspGenerator gen)
{
_gen = gen;
}
public JavaJspGenerator getGenerator()
{
return _gen;
}
/**
* Sets the parse state
*/
public void setParseState(ParseState parseState)
{
_parseState = parseState;
}
/**
* Returns the qname of the node.
*/
public QName getQName()
{
return _name;
}
/**
* Sets the node's qname
*/
public void setQName(QName name)
{
_name = name;
}
/**
* Returns the qname of the node.
*/
public String getTagName()
{
if (_name != null)
return _name.getName();
else
return "jsp:unknown";
}
/**
* Returns the parent node.
*/
public JspNode getParent()
{
return _parent;
}
/**
* Sets the parent node
*/
public void setParent(JspNode parent)
{
_parent = parent;
}
/**
* Sets the start location of the node.
*/
public void setStartLocation(Path sourcePath, String filename, int line)
{
_sourcePath = sourcePath;
_filename = filename;
_startLine = line;
_endAttributeLine = line;
}
/**
* Sets the end location of the node.
*/
public void setEndAttributeLocation(String filename, int line)
{
if (_filename != null && _filename.equals(filename))
_endAttributeLine = line;
}
/**
* Sets the end location of the node.
*/
public void setEndLocation(String filename, int line)
{
if (_filename != null && _filename.equals(filename))
_endLine = line;
}
/**
* Gets the filename of the node
*/
public String getFilename()
{
return _filename;
}
/**
* Gets the starting line number
*/
public int getStartLine()
{
return _startLine;
}
/**
* Gets the attribute ending line number
*/
public int getEndAttributeLine()
{
return _endAttributeLine;
}
/**
* Gets the ending line number
*/
public int getEndLine()
{
return _endLine;
}
/**
* True if the node only has static text.
*/
public boolean isStatic()
{
return false;
}
/**
* True if this is a jstl node.
*/
public boolean isJstl()
{
return false;
}
/**
* True for 2.1 or later taglib
*/
public boolean isJsp21()
{
return true;
}
/**
* Returns the static text.
*/
public String getStaticText()
{
CharBuffer cb = CharBuffer.allocate();
getStaticText(cb);
return cb.close();
}
/**
* Returns the static text.
*/
public void getStaticText(CharBuffer cb)
{
}
/**
* True if the node has scripting (counting rtexpr)
*/
public boolean hasScripting()
{
return false;
}
/**
* True if the node has scripting element (i.e. not counting rtexpr values)
*/
public boolean hasScriptingElement()
{
return false;
}
/**
* Finds the first scripting node
*/
public JspNode findScriptingNode()
{
if (hasScripting())
return this;
else
return null;
}
/**
* Returns the body content.
*/
public String getBodyContent()
{
return "jsp";
}
/**
* True if the node contains a child tag.
*/
public boolean hasCustomTag()
{
return false;
}
/**
* True if the node contains a child tag.
*/
public boolean hasTag()
{
return hasCustomTag();
}
/**
* Returns the tag name for the current tag.
*/
public String getCustomTagName()
{
return null;
}
/**
* Returns true for a simple tag.
*/
public boolean isSimpleTag()
{
return false;
}
/**
* Returns parent tag node
*/
public JspNode getParentTagNode()
{
if (getCustomTagName() != null)
return this;
else {
JspNode parent = getParent();
if (parent != null)
return parent.getParentTagNode();
else
return null;
}
}
/**
* Returns parent tag node
*/
public String getParentTagName()
{
if (getCustomTagName() != null)
return getCustomTagName();
else {
JspNode parent = getParent();
if (parent != null)
return parent.getParentTagName();
else
return null;
}
}
/**
* Returns true if the namespace decl has been printed.
*/
public boolean hasNamespace(String prefix, String uri)
{
if (_parent == null)
return false;
else
return _parent.hasNamespace(prefix, uri);
}
/**
* Adds a namespace, e.g. from a prefix declaration.
*/
public final void addNamespace(String prefix, String value)
{
addNamespaceRec(prefix, value);
}
/**
* Adds a namespace, e.g. from a prefix declaration.
*/
public final void setNamespace(Namespace ns)
{
_ns = ns;
}
/**
* Returns the XPath namespace context.
*/
public final NamespaceContext getNamespaceContext()
{
NamespaceContext ns = null;
for (Namespace ptr = _ns; ptr != null; ptr = ptr.getNext()) {
// jsp/1g58
if (! "".equals(ptr.getPrefix()))
ns = new NamespaceContext(ns, ptr.getPrefix(), ptr.getURI());
}
return ns;
}
/**
* Adds a namespace, e.g. from a prefix declaration.
*/
public void addNamespaceRec(String prefix, String value)
{
if (_parent != null)
_parent.addNamespaceRec(prefix, value);
}
/**
* Adds a namespace, e.g. from a prefix declaration.
*/
public String getNamespacePrefix(String uri)
{
if (_parent != null)
return _parent.getNamespacePrefix(uri);
else
return null;
}
/**
* Returns true if the namespace decl has been printed.
*/
public boolean hasNamespace(QName name)
{
return hasNamespace(name.getPrefix(), name.getNamespaceURI());
}
/**
* Adds an attribute.
*/
public void addAttribute(QName name, String value)
throws JspParseException
{
throw error(L.l("attribute '{0}' is not allowed in <{1}>.",
name.getName(), getTagName()));
}
/**
* Adds a JspAttribute attribute.
*
* @param name the name of the attribute.
* @param value the value of the attribute.
*/
public void addAttribute(QName name, JspAttribute value)
throws JspParseException
{
if (value.isStatic()) {
addAttribute(name, value.getStaticText().trim());
}
else
throw error(L.l("attribute '{0}' is not allowed in <{1}>.",
name.getName(), getTagName()));
}
/**
* Called after all the attributes from the tag.
*/
public void endAttributes()
throws JspParseException
{
}
/**
* Adds text.
*/
public JspNode addText(String text)
throws JspParseException
{
for (int i = 0; i < text.length(); i++) {
char ch = text.charAt(i);
if (! XmlChar.isWhitespace(ch))
throw error(L.l("Text is not allowed in <{0}> at '{1}'.",
_name.getName(), text));
}
return null;
}
/**
* Adds a child node.
*/
public void addChild(JspNode node)
throws JspParseException
{
node.setParent(this);
if (node instanceof JspAttribute) {
}
else if (node instanceof StaticText
&& ((StaticText) node).isWhitespace()) {
}
else
throw node.error(L.l("<{0}> does not allow any child elements at {1}",
getTagName(), node.getTagName()));
}
/**
* Adds a child node after its completely initialized..
*/
public void addChildEnd(JspNode node)
throws JspParseException
{
if (node instanceof JspAttribute) {
JspAttribute attr = (JspAttribute) node;
QName name = attr.getName();
addAttribute(name, attr);
}
}
/**
* Called when the tag closes.
*/
public void endElement()
throws Exception
{
}
/**
* Returns the children.
*/
public ArrayList getChildren()
{
return null;
}
/**
* Returns the TagInstance of the enclosing parent.
*/
public TagInstance getTag()
{
JspNode parent = getParent();
if (parent != null)
return parent.getTag();
else {
return _gen.getRootTag();
}
}
/**
* Return true for pre-21 taglib.
*/
public boolean isPre21Taglib()
{
return false;
}
/**
* Generates the XML text representation for the tag validation.
*
* @param os write stream to the generated XML.
*/
abstract public void printXml(WriteStream os)
throws IOException;
protected String printXmlOpen(WriteStream os,
String ns,
String localName)
throws IOException
{
String prefix = getNamespacePrefix(ns);
if (prefix == null) {
prefix = "c";
os.print("")) {
os.print("%=");
os.print(xmlAttrText(text.substring(3, text.length() - 2)));
os.print("%");
}
else
os.print(xmlAttrText(text));
os.print("\"");
}
/**
* Generates the XML text.
*/
public String xmlText(String text)
{
if (text == null)
return "";
CharBuffer cb = new CharBuffer();
for (int i = 0; i < text.length(); i++) {
char ch = text.charAt(i);
switch (ch) {
case '<':
cb.append("<");
break;
case '>':
cb.append(">");
break;
case '&':
cb.append("&");
break;
case '"':
cb.append(""");
break;
default:
cb.append(ch);
break;
}
}
return cb.toString();
}
/**
* Generates the XML text.
*/
public String xmlAttrText(String text)
{
if (text == null)
return "";
CharBuffer cb = new CharBuffer();
for (int i = 0; i < text.length(); i++) {
char ch = text.charAt(i);
switch (ch) {
case '&':
cb.append("&");
break;
case '<':
cb.append("<");
break;
case '>':
cb.append(">");
break;
case '"':
cb.append(""");
break;
case '\'':
cb.append("'");
break;
default:
cb.append(ch);
break;
}
}
return cb.toString();
}
/**
* Generates the start location.
*/
public void generateStartLocation(JspJavaWriter out)
throws IOException
{
out.setLocation(_filename, _startLine);
}
/**
* Generates the start location.
*/
public void generateEndLocation(JspJavaWriter out)
throws IOException
{
out.setLocation(_filename, _endLine);
}
/**
* generates prologue data.
*/
public void generatePrologue(JspJavaWriter out)
throws Exception
{
generatePrologueChildren(out);
}
/**
* generates prologue data.
*/
public void generatePrologueDeclare(JspJavaWriter out)
throws Exception
{
}
/**
* generates data for prologue children.
*/
public void generatePrologueChildren(JspJavaWriter out)
throws Exception
{
}
/**
* generates declaration data.
*/
public void generateDeclaration(JspJavaWriter out)
throws IOException
{
generateDeclarationChildren(out);
}
/**
* generates data for declaration children.
*/
public void generateDeclarationChildren(JspJavaWriter out)
throws IOException
{
}
/**
* generates tag state
*/
public void generateTagState(JspJavaWriter out)
throws Exception
{
generateTagStateChildren(out);
}
/**
* generates tag state
*/
public void generateTagStateChildren(JspJavaWriter out)
throws Exception
{
}
/**
* generates tag state release
*/
public void generateTagRelease(JspJavaWriter out)
throws Exception
{
generateTagReleaseChildren(out);
}
/**
* generates tag state
*/
public void generateTagReleaseChildren(JspJavaWriter out)
throws Exception
{
}
/**
* Generates the code for the tag
*
* @param out the output writer for the generated java.
*/
abstract public void generate(JspJavaWriter out)
throws Exception;
/**
* Generates the code for the children.
*
* @param out the output writer for the generated java.
*/
public void generateChildren(JspJavaWriter out)
throws Exception
{
}
/**
* Generates the code for the tag
*
* @param out the output writer for the generated java.
*/
public void generateClassEpilogue(JspJavaWriter out)
throws IOException
{
generateClassEpilogueChildren(out);
}
/**
* Generates the code for the tag
*
* @param out the output writer for the generated java.
*/
public void generateClassEpilogueChildren(JspJavaWriter out)
throws IOException
{
}
/**
* Generates the code for the tag
*
* @param out the output writer for the generated java.
*/
public void generateStatic(JspJavaWriter out)
throws Exception
{
}
/**
* Generates the code for the tag
*
* @param out the output writer for the generated java.
*/
public void generateEmpty()
throws Exception
{
generateChildrenEmpty();
}
/**
* Generates the code for the children.
*
* @param out the output writer for the generated java.
*/
public void generateChildrenEmpty()
throws Exception
{
}
/**
* Converts the string to a boolean.
*/
protected boolean attributeToBoolean(String attr, String value)
throws JspParseException
{
if (value.equals("yes") || value.equals("true"))
return true;
else if (value.equals("no") || value.equals("false"))
return false;
else
throw error(L.l("'{0}' is an unknown value for {1}. 'true' or 'false' are the expected values.",
value, attr));
}
/**
* Returns true if in a fragment
*/
public boolean isInFragment()
{
for (JspNode node = getParent(); node != null; node = node.getParent()) {
if (node instanceof JspAttribute || node instanceof CustomSimpleTag)
return true;
}
return false;
}
void generateSetParameter(JspJavaWriter out,
String obj, Object objValue, Method method,
boolean allowRtexpr,
String contextVar, boolean isParentSimpleTag,
boolean isFragment, TagAttributeInfo attrInfo)
throws Exception
{
Class type = method.getParameterTypes()[0];
if (isFragment || JspFragment.class.equals(type)) {
generateFragmentParameter(out, obj, objValue, method,
allowRtexpr, contextVar,
isParentSimpleTag);
return;
}
if (objValue instanceof JspAttribute) {
JspAttribute attr = (JspAttribute) objValue;
if (attr.isStatic())
objValue = attr.getStaticText();
else {
String str = "_jsp_str_" + _gen.uniqueId();
out.printClass(type);
out.println(" " + str + " = " + attr.generateValue(type) + ";");
out.println(obj + "." + method.getName() + "(" + str + ");");
return;
}
}
else if (objValue instanceof JspNode)
throw error(L.l("jsp:attribute may not set this attribute."));
String strValue = (String) objValue;
String convValue = generateParameterValue(type,
strValue,
allowRtexpr,
attrInfo,
_parseState.isELIgnored());
PropertyEditor editor;
if (convValue != null)
out.println(obj + "." + method.getName() + "(" + convValue + ");");
else if ((editor = PropertyEditorManager.findEditor(type)) != null) {
generateSetParameter(out, obj, strValue, method, editor.getClass());
}
else
throw error(L.l("expected '<%= ... %>' at '{0}' for tag attribute setter '{1}'. Tag attributes which can't be converted from strings must use a runtime attribute expression.",
strValue, method.getName() + "(" + type.getName() + ")"));
}
void generateSetParameter(JspJavaWriter out,
String obj, String value, Method method,
Class editorClass)
throws Exception
{
Class type = method.getParameterTypes()[0];
String name = "_jsp_editor" + _gen.uniqueId();
out.print("java.beans.PropertyEditor " + name + " = new " + editorClass.getName() + "();");
out.println(name + ".setAsText(\"" + escapeJavaString(value) + "\");");
out.println(obj + "." + method.getName() + "((" +
type.getName() + ") " + name + ".getValue());");
}
void generateFragmentParameter(JspJavaWriter out,
Object obj, Object objValue, Method method,
boolean allowRtexpr, String contextVar,
boolean isParentSimpleTag)
throws Exception
{
out.print(obj + "." + method.getName() + "(");
if (objValue instanceof JspFragmentNode)
generateFragment(out, (JspFragmentNode) objValue, contextVar,
isParentSimpleTag);
else if (objValue instanceof String) {
String string = (String) objValue;
int index = _gen.addExpr(string);
out.print("new com.caucho.jsp.ELExprFragment(pageContext, _caucho_expr_" + index + ")");
}
else {
throw error(L.l("can't handle fragment '{0}' of type {1}",
objValue, objValue.getClass()));
}
out.println(");");
}
String generateFragmentParameter(String string, boolean allowRtexpr)
throws Exception
{
int index = _gen.addExpr(string);
return ("new com.caucho.jsp.ELExprFragment(pageContext, _caucho_expr_" + index + ")");
}
/**
* Returns the containing segment.
*/
public JspSegmentNode getSegment()
{
JspNode parent = getParent();
if (parent != null)
return parent.getSegment();
else
return null;
}
void generateFragment(JspJavaWriter out,
JspFragmentNode frag,
String contextVar,
boolean isParentSimpleTag)
throws Exception
{
out.print(generateFragment(frag, contextVar));
}
void generateParentTag(JspJavaWriter out, TagInstance parent)
throws IOException
{
String parentId = parent.getId();
if (parentId == null || parentId.startsWith("top_")) {
out.print("null");
}
else if (parent.isSimpleTag()) {
out.print("(" + parentId + "_adapter != null ? ");
out.print(parentId + "_adapter : ");
out.print("(" + parentId + "_adapter = new javax.servlet.jsp.tagext.TagAdapter(" + parentId + ")))");
}
else
out.print(parentId);
}
String generateRTValue(Class type, Object value)
throws Exception
{
if (value instanceof String)
return generateParameterValue(type, (String) value,
true, null, _parseState.isELIgnored());
else {
JspAttribute attr = (JspAttribute) value;
return stringToValue(type, attr.generateValue());
}
}
/**
* Generates the code invoking a fragment to a string.
*/
protected String invokeFragment(JspFragmentNode frag)
throws Exception
{
return frag.generateValue();
}
/**
* Generates the code for a fragment.
*/
protected String generateFragment(JspFragmentNode frag,
String contextVar)
throws Exception
{
StringBuffer cb = new StringBuffer();
if (frag.isStatic()) {
String fragmentVar = frag.getFragmentName();
cb.append(fragmentVar + " = com.caucho.jsp.StaticJspFragmentSupport.create(" + fragmentVar + ", " + contextVar + ", \"");
cb.append(escapeJavaString(frag.getStaticText()));
cb.append("\")");
return cb.toString();
}
int index = frag.getFragmentCode();
getGenerator().addFragment(frag);
String fragmentVar = frag.getFragmentName();
JspNode parentTag = getParentTagNode();
// jsp/0800
boolean isParentSimpleTag = (parentTag instanceof CustomSimpleTag);
if (! isParentSimpleTag) {
cb.append(fragmentVar + " = createFragment_" + index
+ "(" + fragmentVar
+ ", _jsp_parentContext"
+ ", " + contextVar
+ ", ");
}
else {
cb.append(fragmentVar + " = createFragment_" + index
+ "(null"
+ ", _jsp_parentContext"
+ ", " + contextVar
+ ", ");
}
if (parentTag == null)
cb.append("null");
else if (frag.hasCustomTag() && parentTag instanceof CustomSimpleTag)
cb.append(parentTag.getCustomTagName() + "_adapter");
else
cb.append(parentTag.getCustomTagName());
if (_gen instanceof JavaTagGenerator) {
JavaTagGenerator tagGen = (JavaTagGenerator) _gen;
if (tagGen.isStaticDoTag()) // jsp/1025
cb.append(", _jspBody");
else
cb.append(", getJspBody()");
}
else
cb.append(", null");
cb.append(", _jsp_state");
cb.append(", _jsp_pageManager");
cb.append(")");
return cb.toString();
}
/**
* Generates the code for the value of a parent tag.
*/
protected String generateParentTag(TagInstance parent)
throws IOException
{
String parentId = parent.getId();
if (parent.isTop()) {
return "null";
}
else if (parent.isSimpleTag()) {
CharBuffer cb = CharBuffer.allocate();
cb.append("(" + parentId + "_adapter != null ? ");
cb.append(parentId + "_adapter : ");
cb.append("(" + parentId + "_adapter = new javax.servlet.jsp.tagext.TagAdapter(" + parentId + ")))");
return cb.close();
}
else
return parentId;
}
//
// JSF functions
//
/**
* Returns the variable containing the jsf component
*/
public String getJsfVar()
{
if (_parent != null)
return _parent.getJsfVar();
else
return null;
}
/**
* Returns the variable containing the jsf body
*/
public String getJsfBodyVar()
{
if (_parent != null)
return _parent.getJsfBodyVar();
else
return null;
}
/**
* True if the jsf-parent setting is required.
*/
public boolean isJsfParentRequired()
{
return false;
}
//
// value generation
//
/**
* Generate include params.
*/
void generateIncludeParams(JspJavaWriter out,
ArrayList params)
throws Exception
{
boolean hasQuery = false;
for (int i = 0; i < params.size(); i++) {
JspParam param = (JspParam) params.get(i);
String value = param.getValue();
if (hasQuery)
out.print("+ \"&\" + ");
hasQuery = true;
out.print("\"" + param.getName() + "=\"");
String outValue = generateParameterValue(String.class, value);
if (outValue.equals("null")) {
}
else if (outValue.startsWith("\""))
out.print(" + (" + outValue + ")");
else
out.print(" + com.caucho.el.Expr.toString(" + outValue + ", null)");
}
}
protected void generateIncludeUrl(JspJavaWriter out, String page,
ArrayList params)
throws Exception
{
if (params != null) {
for (int i = 0; i < params.size(); i++) {
out.print("pageContext.encode(");
}
out.print("pageContext.encode(");
}
if (hasRuntimeAttribute(page)) {
out.print(getRuntimeAttribute(page));
}
else {
out.print(generateParameterValue(String.class, page));
}
if (params != null) {
out.print(")");
for (int i = 0; i < params.size(); i++) {
if (i > 0)
out.print(".append('&')");
out.print(", ");
generateIncludeParam(out, params.get(i));
out.print(")");
}
out.print(".toString()");
}
}
/**
* Generate include params.
*/
void generateIncludeParam(JspJavaWriter out,
JspParam param)
throws Exception
{
String value = param.getValue();
out.print("\"" + param.getName() + "=\"");
String outValue = generateParameterValue(String.class, value);
if (outValue.equals("null")) {
}
else if (outValue.startsWith("\"")) {
out.print(" + (" + outValue + ")");
}
else
out.print(" + com.caucho.el.Expr.toString(" + outValue + ", null)");
}
String generateJstlValue(Class type, String value)
throws Exception
{
return generateParameterValue(type, value, true, null, false);
}
String generateValue(Class type, String value)
throws Exception
{
return generateParameterValue(type, value, true, null,
_parseState.isELIgnored());
}
String generateParameterValue(Class type, String value)
throws Exception
{
return generateParameterValue(type, value, true, null,
_parseState.isELIgnored());
}
String generateParameterValue(Class type,
String value,
boolean rtexpr,
TagAttributeInfo attrInfo,
boolean isELIgnored)
throws Exception
{
// jsp/1c2m
if (isJstl())
isELIgnored = false;
boolean isEmpty = value == null || value.equals("");
if (isEmpty)
value = "0";
try {
String typeName = attrInfo != null ? attrInfo.getExpectedTypeName() : "";
boolean isValueDeferred
= (attrInfo != null && attrInfo.isDeferredValue()
|| typeName != null && ! "".equals(typeName));
boolean isMethodDeferred
= (attrInfo != null && attrInfo.isDeferredMethod());
if (JspFragment.class.equals(type))
return generateFragmentParameter(value, rtexpr);
else if (type.equals(ValueExpression.class)) {
int exprIndex;
if (isEmpty)
exprIndex = _gen.addValueExpr("", typeName);
else
exprIndex = _gen.addValueExpr(value, typeName);
if (isValueDeferred
&& value.indexOf("#{") < 0
&& value.indexOf("${") >= 0) {
throw error(L.l("ValueExpression '{0}' must use deferred syntax '#{...}'",
value));
}
else if (! isValueDeferred
&& value.indexOf("#{") >= 0
&& value.indexOf("${") < 0) {
throw error(L.l("Deferred syntax '#{...}' is not allowed for '{0}'",
value));
}
if (value.indexOf("#{") < 0 && value.indexOf("${") < 0) {
return ("_caucho_value_expr_" + exprIndex);
}
else {
StringBuilder sb = new StringBuilder();
sb.append("pageContext.createExpr(_caucho_value_expr_");
sb.append(exprIndex);
sb.append(", \"");
sb.append(escapeJavaString(value));
sb.append("\", ");
if (null == typeName || "".equals(typeName)) {
sb.append("java.lang.Object.class)");
} else {
sb.append(escapeJavaString(typeName));
sb.append(".class)");
}
return sb.toString();
}
}
else if (type.equals(MethodExpression.class)) {
int exprIndex;
String sig = attrInfo != null ? attrInfo.getMethodSignature() : "java.lang.String misc()";
if (isEmpty)
exprIndex = _gen.addMethodExpr("", sig);
else
exprIndex = _gen.addMethodExpr(value, sig);
if (value.indexOf("${") >= 0)
throw error(L.l("MethodExpression '{0}' must use deferred syntax '$#{...}'",
value));
return ("_caucho_method_expr_" + exprIndex);
}
else if (! isValueDeferred
&& ! _gen.getParseState().isDeferredSyntaxAllowedAsLiteral()
&& value.indexOf("#{") >= 0
&& value.indexOf("${") < 0
&& rtexpr
&& isJsp21()) {
// jsp/10h2, jsp/1cn0, jsp/10h3
throw error(L.l("deferred expression '{0}' is not allowed here",
value));
}
else if (com.caucho.el.Expr.class.equals(type)) {
int exprIndex;
if (isEmpty)
exprIndex = _gen.addExpr("");
else
exprIndex = _gen.addExpr(value);
return ("_caucho_expr_" + exprIndex);
}
else if (com.caucho.xpath.Expr.class.equals(type)) {
com.caucho.xpath.Expr expr;
if (isEmpty)
expr = XPath.parseExpr("");
else
expr = XPath.parseExpr(value, getNamespaceContext());
return _gen.addXPathExpr(expr);
}
else if (rtexpr && hasRuntimeAttribute(value)) {
return getRuntimeAttribute(value);
}
else if (rtexpr && hasELAttribute(value, isELIgnored)) {
// jsp/0138, jsp/18s0, jsp/1ce5, jsp/1e0a
return generateELValue(type, value);
}
else if (! rtexpr && hasELAttribute(value, isELIgnored)) {
// JSP.2.3.6 says this is an error
// jsp/184v vs jsp/18cr vs jsp/18f5 vs jsp/18f7 (tck)
// #2112
if (String.class.equals(type) && _gen.isELIgnore())
return '"' + escapeJavaString(value) + '"';
else
throw error(L.l("EL expression '{0}' is only allowed for attributes with rtexprvalue='true'.",
value));
}
else if (rtexpr && hasDeferredAttribute(value, false)) {
// jsp/1c2m, jsp/1ce8
if (type.equals(String.class))
return '"' + value + '"';
else
return generateELValue(type, value);
}
else if (! rtexpr
&& hasDeferredAttribute(value, isELIgnored)
&& ! _gen.getParseState().isDeferredSyntaxAllowedAsLiteral()) {
throw error(L.l("Deferred syntax '{0}' is not allowed as a literal.",
value));
}
else if (type.equals(boolean.class))
return String.valueOf(Boolean.valueOf(isEmpty ? "false" : value));
else if (type.equals(Boolean.class)) {
if (isEmpty)
return "java.lang.Boolean.FALSE";
else
return "new java.lang.Boolean(" + Boolean.valueOf(value) + ")";
}
else if (type.equals(byte.class))
return "(byte) " + Byte.valueOf(value);
else if (type.equals(Byte.class))
return "new java.lang.Byte((byte) " + Byte.valueOf(value) + ")";
else if (type.equals(char.class)) {
if (isEmpty)
return "'\\0'";
else
return "'" + value.charAt(0) + "'";
}
else if (type.equals(Character.class)) {
if (isEmpty)
return "new java.lang.Character('\\0')";
else
return ("new Character('" + value.charAt(0) + "')");
}
else if (type.equals(short.class))
return ("(short) " + Short.valueOf(value));
else if (type.equals(Short.class))
return ("new java.lang.Short((short) " + Short.valueOf(value) + ")");
else if (type.equals(int.class))
return String.valueOf(Integer.valueOf(value));
else if (type.equals(Integer.class))
return ("new java.lang.Integer(" + Integer.valueOf(value) + ")");
else if (type.equals(long.class))
return String.valueOf(Long.valueOf(value));
else if (type.equals(Long.class))
return ("new java.lang.Long(" + Long.valueOf(value) + ")");
else if (type.equals(float.class))
return ("(float) " + Float.valueOf(value));
else if (type.equals(Float.class))
return ("new java.lang.Float((float) " + Float.valueOf(value) + ")");
else if (type.equals(double.class))
return String.valueOf(Double.valueOf(value));
else if (type.equals(Double.class)) {
double v = Double.valueOf(value);
if (Double.isNaN(v))
return ("new java.lang.Double(Double.NaN)");
else
return ("new java.lang.Double(" + v + ")");
}
else if (! type.equals(String.class)
&& ! type.equals(Object.class)) {
return null;
}
else if (! isEmpty) {
return '"' + escapeJavaString(value) + '"';
}
else
return "\"\"";
} catch (NumberFormatException e) {
throw error(L.l("parameter format error: {0}", e.getMessage()), e);
}
}
protected String generateELValue(Class type, String value)
throws Exception
{
if (type.equals(com.caucho.el.Expr.class)) {
int exprIndex;
exprIndex = _gen.addExpr(value);
return ("_caucho_expr_" + exprIndex);
}
else if (type.equals(ValueExpression.class)) {
int exprIndex;
exprIndex = _gen.addValueExpr(value, "");
return ("_caucho_value_expr_" + exprIndex);
}
else if (type.equals(Object.class)
&& value.contains("#{")
&& CustomTag.class.equals(getClass())) {
int exprIndex;
exprIndex = _gen.addValueExpr(value, "");
return ("_caucho_value_expr_" + exprIndex);
}
else if (type.equals(com.caucho.xpath.Expr.class)) {
com.caucho.xpath.Expr expr;
expr = XPath.parseExpr(value, getNamespaceContext());
return _gen.addXPathExpr(expr);
}
Expr expr = _gen.genExpr(value);
if (expr.isConstant()) {
try {
if (expr.evalObject(null) != null) {
}
else if (Character.class.isAssignableFrom(type)) {
// jsp/18s0
return "new Character((char) 0)";
}
else if (Boolean.class.isAssignableFrom(type)) {
// jsp/18s1
return "Boolean.FALSE";
}
else if (String.class.isAssignableFrom(type)) {
// jsp/18s2
return "\"\"";
}
else if (BigInteger.class.isAssignableFrom(type)) {
return "java.math.BigInteger.ZERO";
}
else if (BigDecimal.class.isAssignableFrom(type)) {
return "java.math.BigDecimal.ZERO";
}
else if (Number.class.isAssignableFrom(type)) {
// jsp/18s6
return "new " + type.getName() + "((byte) 0)";
}
else if (Object.class.isAssignableFrom(type))
return "null";
if (boolean.class.equals(type))
return expr.evalBoolean(null) ? "true" : "false";
else if (Boolean.class.equals(type))
return expr.evalBoolean(null) ? "java.lang.Boolean.TRUE" : "java.lang.Boolean.FALSE";
else if (byte.class.equals(type))
return "(byte) " + expr.evalLong(null);
else if (Byte.class.equals(type))
return "new java.lang.Byte((byte) " + expr.evalLong(null) + "L)";
else if (short.class.equals(type))
return "(short) " + expr.evalLong(null);
else if (Short.class.equals(type))
return "new java.lang.Short((short) " + expr.evalLong(null) + "L)";
else if (int.class.equals(type))
return "(int) " + expr.evalLong(null);
else if (Integer.class.equals(type))
return "new java.lang.Integer((int) " + expr.evalLong(null) + "L)";
else if (long.class.equals(type))
return "" + expr.evalLong(null) + "L";
else if (Long.class.equals(type))
return "new java.lang.Long(" + expr.evalLong(null) + "L)";
else if (float.class.equals(type))
return "(float) " + expr.evalDouble(null);
else if (Float.class.equals(type))
return "new java.lang.Float((float) " + expr.evalDouble(null) + ")";
else if (double.class.equals(type)) {
double v = expr.evalDouble(null);
if (Double.isNaN(v))
return "Double.NaN";
else
return "" + v;
}
else if (Double.class.equals(type)) {
double v = expr.evalDouble(null);
if (Double.isNaN(v))
return "new Double(Double.NaN)";
else
return "new java.lang.Double(" + v + ")";
}
else if (char.class.equals(type))
return "((char) " + (int) expr.evalCharacter(null) + ")";
else if (Character.class.equals(type)) {
// jsp/18s0
return "new Character((char) " + (int) expr.evalCharacter(null) + ")";
}
else if (String.class.equals(type))
return "\"" + escapeJavaString(expr.evalString(null)) + "\"";
else if (BigInteger.class.equals(type)) {
String v = expr.evalBigInteger(null).toString();
// 18s3
if (v.equals("") || v.equals("0"))
return "java.math.BigInteger.ZERO";
else
return "new java.math.BigInteger(\"" + v + "\")";
}
else if (BigDecimal.class.equals(type)) {
String v = expr.evalBigDecimal(null).toString();
// 18s4
if (v.equals("") || v.equals("0.0"))
return "java.math.BigDecimal.ZERO";
else
return "new java.math.BigDecimal(\"" + v + "\")";
}
else if (Object.class.equals(type)) {
Object cValue = expr.evalObject(null);
String result = generateObject(cValue);
if (result != null)
return result;
}
else {
Object cValue = expr.evalObject(null);
// jsp/184t
if ("".equals(cValue))
return "null";
}
} catch (Throwable e) {
// jsp/18co
// exceptions are caught at runtime
log.log(Level.FINER, e.toString(), e);
log.fine(e.getMessage());
}
}
int exprIndex = _gen.addExpr(value);
String var = "_caucho_expr_" + exprIndex;
if (boolean.class.equals(type))
return var + ".evalBoolean(_jsp_env)";
else if (Boolean.class.equals(type))
return var + ".evalBoolean(_jsp_env) ? java.lang.Boolean.TRUE : java.lang.Boolean.FALSE";
else if (byte.class.equals(type))
return "(byte) " + var + ".evalLong(_jsp_env)";
else if (Byte.class.equals(type))
return "new java.lang.Byte((byte) " + var + ".evalLong(_jsp_env))";
else if (short.class.equals(type))
return "(short) " + var + ".evalLong(_jsp_env)";
else if (Short.class.equals(type))
return "new java.lang.Short((short) " + var + ".evalLong(_jsp_env))";
else if (int.class.equals(type))
return "(int) " + var + ".evalLong(_jsp_env)";
else if (Integer.class.equals(type))
return "new java.lang.Integer((int) " + var + ".evalLong(_jsp_env))";
else if (long.class.equals(type))
return var + ".evalLong(_jsp_env)";
else if (Long.class.equals(type))
return "new java.lang.Long(" + var + ".evalLong(_jsp_env))";
else if (float.class.equals(type))
return "(float) " + var + ".evalDouble(_jsp_env)";
else if (Float.class.equals(type))
return "new java.lang.Float((float) " + var + ".evalDouble(_jsp_env))";
else if (double.class.equals(type))
return var + ".evalDouble(_jsp_env)";
else if (Double.class.equals(type))
return "new java.lang.Double(" + var + ".evalDouble(_jsp_env))";
else if (java.math.BigDecimal.class.equals(type))
return "" + var + ".evalBigDecimal(_jsp_env)";
else if (java.math.BigInteger.class.equals(type))
return "" + var + ".evalBigInteger(_jsp_env)";
else if (char.class.equals(type))
return var + ".evalCharacter(_jsp_env)";
else if (Character.class.equals(type))
return "new Character(" + var + ".evalCharacter(_jsp_env))";
else if (String.class.equals(type))
return var + ".evalString(_jsp_env)";
else if (BigInteger.class.equals(type))
return var + ".evalBigInteger(_jsp_env)";
else if (BigDecimal.class.equals(type))
return var + ".evalBigDecimal(_jsp_env)";
else if (Object.class.equals(type))
return var + ".evalObject(_jsp_env)";
else {
return "(" + classToString(type) + ") " + var + ".evalObject(_jsp_env)";
}
}
public void convertParameterValue(JspJavaWriter out, String type, String value)
throws IOException
{
if (type.equals("boolean"))
out.print("java.lang.Boolean.TRUE.equals(" + value + ")");
else if (type.equals("byte"))
out.print("java.lang.Byte.valueOf(" + value + ")");
else if (type.equals("char"))
out.print("java.lang.Character.valueOf(" + value + ")");
else if (type.equals("short"))
out.print("java.lang.Short.valueOf(" + value + ")");
else if (type.equals("int"))
out.print("((java.lang.Integer) " + value + ").intValue()");
else if (type.equals("long"))
out.print("((java.lang.Long) " + value + ").longValue()");
else if (type.equals("float"))
out.print("((java.lang.Float) " + value + ").floatValue()");
else if (type.equals("double"))
out.print("((java.lang.Double) " + value + ").doubleValue()");
else
out.print("(" + type + ")" + value);
}
protected String classToString(Class cl)
{
if (cl.isArray())
return classToString(cl.getComponentType()) + "[]";
else
return cl.getName();
}
/**
* Returns true if the value is a runtime attribute.
*/
public boolean hasRuntimeAttribute(String value)
throws JspParseException
{
if (_parseState.isScriptingInvalid()) {
// && value.indexOf("<%=") >= 0) {
return false;
/*
throw error(L.l("Runtime expressions are forbidden here. Scripting has been disabled either:\n1) disabled by the web.xml scripting-invalid\n2) disabled in a tag's descriptor\n3) forbidden in or tags."));
*/
}
if (value.startsWith("<%=") && value.endsWith("%>"))
return true;
else if (value.startsWith("%=") && value.endsWith("%"))
return true;
else if (value.indexOf("<%=") >= 0 &&
value.indexOf("<%=") < value.indexOf("%>"))
throw error(L.l("interpolated runtime values are forbidden by the JSP spec at '{0}'",
value));
else
return false;
}
/**
* Returns true if the string has scripting.
*/
public boolean hasScripting(String value)
{
try {
return value != null && hasRuntimeAttribute(value);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* Returns true if the string has scripting.
*/
public boolean hasScripting(JspAttribute value)
{
return value != null && value.hasScripting();
}
/**
* Returns true if the value is a runtime attribute.
*/
public boolean hasELAttribute(String value)
{
return ! _parseState.isELIgnored() && value.indexOf("${") >= 0;
}
/**
* Returns true if the value is a runtime attribute.
*/
public boolean hasDeferredAttribute(String value)
{
if (value.indexOf("#{") < 0)
return false;
else if (isPre21Taglib())
return false;
else
return ! _parseState.isELIgnored();
}
/**
* Returns true if the value is a runtime attribute.
*/
public boolean hasELAttribute(String value, boolean isELIgnored)
{
return ! isELIgnored && value.indexOf("${") >= 0;
}
/**
* Returns true if the value is a runtime attribute.
*/
public boolean hasDeferredAttribute(String value, boolean isELIgnored)
{
if (isELIgnored)
return false;
else if (value.indexOf("#{") < 0)
return false;
else if (isPre21Taglib())
return false;
else
return true;
}
/**
* Returns the runtime attribute of the value.
*/
public String getRuntimeAttribute(String value)
throws Exception
{
if (value.startsWith("<%=") && value.endsWith("%>"))
return value.substring(3, value.length() - 2);
else if (value.startsWith("%=") && value.endsWith("%"))
return value.substring(2, value.length() - 1);
else
return value;
}
/**
* Converts a string-valued expression to the given type.
*/
String stringToValue(Class type, String obj)
{
if (boolean.class.equals(type))
return "com.caucho.jsp.PageContextImpl.toBoolean(" + obj + ")";
else if (Boolean.class.equals(type))
return "java.lang.Boolean.valueOf(" + obj + ")";
else if (byte.class.equals(type))
return "java.lang.Byte.parseByte(" + obj + ")";
else if (Byte.class.equals(type))
return "java.lang.Byte.valueOf(" + obj + ")";
else if (char.class.equals(type))
return obj + ".charAt(0)";
else if (Character.class.equals(type))
return "new java.lang.Character(" + obj + ".charAt(0))";
else if (short.class.equals(type))
return "java.lang.Short.parseShort(" + obj + ")";
else if (Short.class.equals(type))
return "java.lang.Short.valueOf(" + obj + ")";
else if (int.class.equals(type))
return "java.lang.Integer.parseInt(" + obj + ")";
else if (Integer.class.equals(type))
return "java.lang.Integer.valueOf(" + obj + ")";
else if (long.class.equals(type))
return "java.lang.Long.parseLong(" + obj + ")";
else if (Long.class.equals(type))
return "java.lang.Long.valueOf(" + obj + ")";
else if (float.class.equals(type))
return "java.lang.Float.parseFloat(" + obj + ")";
else if (Float.class.equals(type))
return "java.lang.Float.valueOf(" + obj + ")";
else if (double.class.equals(type))
return "java.lang.Double.parseDouble(" + obj + ")";
else if (Double.class.equals(type))
return "java.lang.Double.valueOf(" + obj + ")";
else if (type.isAssignableFrom(String.class))
return obj;
else
return null;
}
/**
* Converts a string-valued expression to the given type.
*/
Object staticStringToValue(Class type, String obj)
{
if (boolean.class.equals(type) || Boolean.class.equals(type))
return Boolean.valueOf(obj);
else if (byte.class.equals(type) || Byte.class.equals(type))
return Byte.parseByte(obj);
else if (char.class.equals(type) || Character.class.equals(type))
return obj.charAt(0);
else if (short.class.equals(type) || Short.class.equals(type))
return Short.parseShort(obj);
else if (int.class.equals(type) || Integer.class.equals(type))
return Integer.parseInt(obj);
else if (long.class.equals(type) || Long.class.equals(type))
return Long.parseLong(obj);
else if (float.class.equals(type) || Float.class.equals(type))
return Float.parseFloat(obj);
else if (double.class.equals(type) || Double.class.equals(type))
return Double.parseDouble(obj);
else if (type.isAssignableFrom(String.class))
return obj;
else
return obj; // XXX:
}
protected String generateObject(Object obj)
{
if (obj instanceof String)
return "\"" + escapeJavaString((String) obj) + "\"";
else if (obj instanceof Long)
return "new java.lang.Long(" + obj + "L)";
else if (obj instanceof Integer)
return "new java.lang.Integer((int) " + obj + "L)";
else if (obj instanceof Double) {
double v = (Double) obj;
if (Double.isNaN(v))
return "new java.lang.Double(Double.NaN)";
else
return "new java.lang.Double(" + v + ")";
}
else if (obj instanceof Boolean)
return ((Boolean) obj).booleanValue() ? "java.lang.Boolean.TRUE" : "java.lang.Boolean.FALSE";
else
return null;
}
public static String toELObject(String expr, Class type)
{
if (boolean.class.equals(type))
return "((" + expr + ") ? Boolean.TRUE : Boolean.FALSE)";
else if (byte.class.equals(type))
return "new Long(" + expr + ")";
else if (short.class.equals(type))
return "new Long(" + expr + ")";
else if (int.class.equals(type))
return "new Long(" + expr + ")";
else if (long.class.equals(type))
return "new Long(" + expr + ")";
else if (float.class.equals(type))
return "new Double(" + expr + ")";
else if (double.class.equals(type))
return "new Double(" + expr + ")";
else if (char.class.equals(type))
return "String.valueOf(" + expr + ")";
else
return expr;
}
/**
* Escapes a java string.
*/
public static String escapeJavaString(String s)
{
if (s == null)
return "";
CharBuffer cb = CharBuffer.allocate();
for (int i = 0; i < s.length(); i++) {
if (s.charAt(i) == '\\')
cb.append("\\\\");
else if (s.charAt(i) == '"')
cb.append("\\\"");
else if (s.charAt(i) == '\n')
cb.append("\\n");
else if (s.charAt(i) == '\r')
cb.append("\\r");
else
cb.append(s.charAt(i));
}
return cb.close();
}
protected Class loadClass(String type)
throws JspParseException
{
if (type == null)
return null;
else {
try {
return _gen.getBeanClass(type);
} catch (Exception e) {
throw new JspParseException(e);
}
}
}
/**
* Creates a parse exception with the proper line information.
*/
protected JspParseException error(String msg)
{
return error(msg, null);
}
/**
* Creates a parse exception with the proper line information.
*/
protected JspParseException error(String msg, Throwable e)
{
if (_filename != null) {
String lines = _gen.getSourceLines(_sourcePath, _startLine);
return new JspLineParseException(_filename + ":" + _startLine + ": " + msg + lines, e);
}
else
return new JspParseException(msg, e);
}
/**
* Creates a parse exception with the proper line information.
*/
protected JspParseException error(Throwable e)
{
if (e instanceof JspLineParseException)
return (JspParseException) e;
else if (_filename == null || e instanceof LineCompileException)
return new JspLineParseException(e);
String msg;
if (e instanceof CompileException)
msg = e.getMessage();
else
msg = String.valueOf(e);
String lines = _gen.getSourceLines(_sourcePath, _startLine);
return new JspLineParseException(_filename + ":" + _startLine + ": " + msg + lines, e);
}
/**
* Returns a printable version of the node.
*/
public String toString()
{
if (_name == null)
return "<" + getClass().getName() + ">";
else
return "<" + _name.getName() + ">";
}
}