/** Registers the given script as a top-level script in the debugger. */
private void registerTopScript(DebuggableScript topScript, String source) {
if (!topScript.isTopLevel()) {
throw new IllegalArgumentException();
}
String url = getNormalizedUrl(topScript);
DebuggableScript[] functions = getAllFunctions(topScript);
final SourceInfo sourceInfo = new SourceInfo(source, functions, url);
synchronized (urlToSourceInfo) {
SourceInfo old = urlToSourceInfo.get(url);
if (old != null) {
sourceInfo.copyBreakpointsFrom(old);
}
urlToSourceInfo.put(url, sourceInfo);
for (int i = 0; i != sourceInfo.functionSourcesTop(); ++i) {
FunctionSource fsource = sourceInfo.functionSource(i);
String name = fsource.name();
if (name.length() != 0) {
functionNames.put(name, fsource);
}
}
}
synchronized (functionToSource) {
for (int i = 0; i != functions.length; ++i) {
FunctionSource fsource = sourceInfo.functionSource(i);
functionToSource.put(functions[i], fsource);
}
}
callback.updateSourceText(sourceInfo);
}
public static ScriptableObject require(
Context cx, Scriptable thisObj, Object[] args, Function funObj)
throws ScriptException, IOException {
String functionName = "require";
int argsCount = args.length;
if (argsCount != 1) {
HostObjectUtil.invalidNumberOfArgs(
CommonManager.HOST_OBJECT_NAME, functionName, argsCount, false);
}
if (!(args[0] instanceof String)) {
HostObjectUtil.invalidArgsError(
CommonManager.HOST_OBJECT_NAME, functionName, "1", "string", args[0], false);
}
String moduleId = (String) args[0];
int dotIndex = moduleId.lastIndexOf(".");
if (moduleId.length() == dotIndex + 1) {
String msg = "Invalid file path for require method : " + moduleId;
log.error(msg);
throw new ScriptException(msg);
}
JaggeryContext jaggeryContext = CommonManager.getJaggeryContext();
Map<String, ScriptableObject> requiredModules =
(Map<String, ScriptableObject>)
jaggeryContext.getProperty(Constants.JAGGERY_REQUIRED_MODULES);
ScriptableObject object = requiredModules.get(moduleId);
if (object != null) {
return object;
}
if (dotIndex == -1) {
object = CommonManager.require(cx, thisObj, args, funObj);
initModule(cx, jaggeryContext, moduleId, object);
} else {
object = (ScriptableObject) cx.newObject(thisObj);
object.setPrototype(thisObj);
object.setParentScope(null);
String ext = moduleId.substring(dotIndex + 1);
if (ext.equalsIgnoreCase("json")) {
object = executeScript(jaggeryContext, object, moduleId, true, true, false);
} else if (ext.equalsIgnoreCase("js")) {
object = executeScript(jaggeryContext, object, moduleId, false, true, false);
} else if (ext.equalsIgnoreCase("jag")) {
object = executeScript(jaggeryContext, object, moduleId, false, false, false);
} else {
String msg = "Unsupported file type for require() method : ." + ext;
log.error(msg);
throw new ScriptException(msg);
}
}
requiredModules.put(moduleId, object);
return object;
}
private void parseDirective(String token) {
int index = token.indexOf(Constants.DIRECTIVE_EQUALS);
String directiveName = token.substring(0, index).trim();
if (directiveName.length() == 0) return;
String value = token.substring(index + Constants.DIRECTIVE_EQUALS.length()).trim();
if (directiveName.equals(Constants.MANDATORY_DIRECTIVE)) parseMandatory(value);
directives.put(directiveName, value);
}
private void parseAttribute(String token) {
int index = token.indexOf(Constants.ATTRIBUTE_EQUALS);
String attributeName = token.substring(0, index).trim();
if (attributeName.length() == 0) return;
Object value = token.substring(index + Constants.ATTRIBUTE_EQUALS.length()).trim();
if (attributeName.equals(Constants.VERSION_ATTRIBUTE))
version = Version.parseVersion((String) value);
attributes.put(attributeName, value);
}
PageInfo getPageInfo(ScriptContext context, String path) throws IOException {
PageInfo info = null;
if (pageInfoCache != null) info = this.pageInfoCache.get(path);
if (info == null) {
String file = prefix + path + suffix;
String actualPath = FileHelper.findRecursive(file);
String source = FileHelper.read(actualPath);
Object object = context.evaluate(source, path);
info = new PageInfo((BaseFunction) object, actualPath);
if (pageInfoCache != null) pageInfoCache.put(path, info);
}
return info;
}
private static ScriptableObject executeScript(
JaggeryContext jaggeryContext,
ScriptableObject scope,
String fileURL,
final boolean isJSON,
boolean isBuilt,
boolean isIncludeOnce)
throws ScriptException {
Stack<String> includesCallstack = CommonManager.getCallstack(jaggeryContext);
Map<String, Boolean> includedScripts = CommonManager.getIncludes(jaggeryContext);
ServletContext context = (ServletContext) jaggeryContext.getProperty(Constants.SERVLET_CONTEXT);
String parent = includesCallstack.lastElement();
String keys[] = WebAppManager.getKeys(context.getContextPath(), parent, fileURL);
fileURL = getNormalizedScriptPath(keys);
if (includesCallstack.search(fileURL) != -1) {
return scope;
}
if (isIncludeOnce && includedScripts.get(fileURL) != null) {
return scope;
}
ScriptReader source;
RhinoEngine engine = jaggeryContext.getEngine();
if (isBuilt) {
source =
new ScriptReader(context.getResourceAsStream(fileURL)) {
@Override
protected void build() throws IOException {
try {
if (isJSON) {
sourceReader =
new StringReader("(" + HostObjectUtil.streamToString(sourceIn) + ")");
} else {
sourceReader = new StringReader(HostObjectUtil.streamToString(sourceIn));
}
} catch (ScriptException e) {
throw new IOException(e);
}
}
};
} else {
source = new ScriptReader(context.getResourceAsStream(fileURL));
}
ScriptCachingContext sctx =
new ScriptCachingContext(jaggeryContext.getTenantId(), keys[0], keys[1], keys[2]);
sctx.setSecurityDomain(new JaggerySecurityDomain(fileURL, context));
long lastModified = WebAppManager.getScriptLastModified(context, fileURL);
sctx.setSourceModifiedTime(lastModified);
includedScripts.put(fileURL, true);
includesCallstack.push(fileURL);
if (isJSON) {
scope = (ScriptableObject) engine.eval(source, scope, sctx);
} else {
engine.exec(source, scope, sctx);
}
includesCallstack.pop();
return scope;
}
static {
// This list contains all the 3 characters or less built-in global
// symbols available in a browser. Please add to this list if you
// see anything missing.
builtin.add("NaN");
builtin.add("top");
ones = new ArrayList<String>();
for (char c = 'a'; c <= 'z'; c++) ones.add(Character.toString(c));
for (char c = 'A'; c <= 'Z'; c++) ones.add(Character.toString(c));
twos = new ArrayList<String>();
for (int i = 0; i < ones.size(); i++) {
String one = ones.get(i);
for (char c = 'a'; c <= 'z'; c++) twos.add(one + Character.toString(c));
for (char c = 'A'; c <= 'Z'; c++) twos.add(one + Character.toString(c));
for (char c = '0'; c <= '9'; c++) twos.add(one + Character.toString(c));
}
// Remove two-letter JavaScript reserved words and built-in globals...
twos.remove("as");
twos.remove("is");
twos.remove("do");
twos.remove("if");
twos.remove("in");
twos.removeAll(builtin);
threes = new ArrayList<String>();
for (int i = 0; i < twos.size(); i++) {
String two = twos.get(i);
for (char c = 'a'; c <= 'z'; c++) threes.add(two + Character.toString(c));
for (char c = 'A'; c <= 'Z'; c++) threes.add(two + Character.toString(c));
for (char c = '0'; c <= '9'; c++) threes.add(two + Character.toString(c));
}
// Remove three-letter JavaScript reserved words and built-in globals...
threes.remove("for");
threes.remove("int");
threes.remove("new");
threes.remove("try");
threes.remove("use");
threes.remove("var");
threes.removeAll(builtin);
// That's up to ((26+26)*(1+(26+26+10)))*(1+(26+26+10))-8
// (206,380 symbols per scope)
// The following list comes from
// org/mozilla/javascript/Decompiler.java...
// 注意：此处并为认为地设定键与值的acsii码相等，比如Token.ASSIGN是89,而'='为61
literals.put(new Integer(Token.GET), "get ");
literals.put(new Integer(Token.SET), "set ");
literals.put(new Integer(Token.TRUE), "true");
literals.put(new Integer(Token.FALSE), "false");
literals.put(new Integer(Token.NULL), "null");
literals.put(new Integer(Token.THIS), "this");
literals.put(new Integer(Token.FUNCTION), "function");
literals.put(new Integer(Token.COMMA), ",");
literals.put(new Integer(Token.LC), "{");
literals.put(new Integer(Token.RC), "}");
literals.put(new Integer(Token.LP), "(");
literals.put(new Integer(Token.RP), ")");
literals.put(new Integer(Token.LB), "[");
literals.put(new Integer(Token.RB), "]");
literals.put(new Integer(Token.DOT), ".");
literals.put(new Integer(Token.NEW), "new ");
literals.put(new Integer(Token.DELPROP), "delete ");
literals.put(new Integer(Token.IF), "if");
literals.put(new Integer(Token.ELSE), "else");
literals.put(new Integer(Token.FOR), "for");
literals.put(new Integer(Token.IN), " in ");
literals.put(new Integer(Token.WITH), "with");
literals.put(new Integer(Token.WHILE), "while");
literals.put(new Integer(Token.DO), "do");
literals.put(new Integer(Token.TRY), "try");
literals.put(new Integer(Token.CATCH), "catch");
literals.put(new Integer(Token.FINALLY), "finally");
literals.put(new Integer(Token.THROW), "throw");
literals.put(new Integer(Token.SWITCH), "switch");
literals.put(new Integer(Token.BREAK), "break");
literals.put(new Integer(Token.CONTINUE), "continue");
literals.put(new Integer(Token.CASE), "case");
literals.put(new Integer(Token.DEFAULT), "default");
literals.put(new Integer(Token.RETURN), "return");
literals.put(new Integer(Token.VAR), "var ");
literals.put(new Integer(Token.SEMI), ";");
literals.put(new Integer(Token.ASSIGN), "=");
literals.put(new Integer(Token.ASSIGN_ADD), "+=");
literals.put(new Integer(Token.ASSIGN_SUB), "-=");
literals.put(new Integer(Token.ASSIGN_MUL), "*=");
literals.put(new Integer(Token.ASSIGN_DIV), "/=");
literals.put(new Integer(Token.ASSIGN_MOD), "%=");
literals.put(new Integer(Token.ASSIGN_BITOR), "|=");
literals.put(new Integer(Token.ASSIGN_BITXOR), "^=");
literals.put(new Integer(Token.ASSIGN_BITAND), "&=");
literals.put(new Integer(Token.ASSIGN_LSH), "<<=");
literals.put(new Integer(Token.ASSIGN_RSH), ">>=");
literals.put(new Integer(Token.ASSIGN_URSH), ">>>=");
literals.put(new Integer(Token.HOOK), "?");
literals.put(new Integer(Token.OBJECTLIT), ":");
literals.put(new Integer(Token.COLON), ":");
literals.put(new Integer(Token.OR), "||");
literals.put(new Integer(Token.AND), "&&");
literals.put(new Integer(Token.BITOR), "|");
literals.put(new Integer(Token.BITXOR), "^");
literals.put(new Integer(Token.BITAND), "&");
literals.put(new Integer(Token.SHEQ), "===");
literals.put(new Integer(Token.SHNE), "!==");
literals.put(new Integer(Token.EQ), "==");
literals.put(new Integer(Token.NE), "!=");
literals.put(new Integer(Token.LE), "<=");
literals.put(new Integer(Token.LT), "<");
literals.put(new Integer(Token.GE), ">=");
literals.put(new Integer(Token.GT), ">");
literals.put(new Integer(Token.INSTANCEOF), " instanceof ");
literals.put(new Integer(Token.LSH), "<<");
literals.put(new Integer(Token.RSH), ">>");
literals.put(new Integer(Token.URSH), ">>>");
literals.put(new Integer(Token.TYPEOF), "typeof");
literals.put(new Integer(Token.VOID), "void ");
literals.put(new Integer(Token.CONST), "const ");
literals.put(new Integer(Token.NOT), "!");
literals.put(new Integer(Token.BITNOT), "~");
literals.put(new Integer(Token.POS), "+");
literals.put(new Integer(Token.NEG), "-");
literals.put(new Integer(Token.INC), "++");
literals.put(new Integer(Token.DEC), "--");
literals.put(new Integer(Token.ADD), "+");
literals.put(new Integer(Token.SUB), "-");
literals.put(new Integer(Token.MUL), "*");
literals.put(new Integer(Token.DIV), "/");
literals.put(new Integer(Token.MOD), "%");
literals.put(new Integer(Token.COLONCOLON), "::");
literals.put(new Integer(Token.DOTDOT), "..");
literals.put(new Integer(Token.DOTQUERY), ".(");
literals.put(new Integer(Token.XMLATTR), "@");
literals.put(new Integer(Token.LET), "let ");
literals.put(new Integer(Token.YIELD), "yield ");
// See
// http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Reserved_Words
// JavaScript 1.5 reserved words
reserved.add("break");
reserved.add("case");
reserved.add("catch");
reserved.add("continue");
reserved.add("default");
reserved.add("delete");
reserved.add("do");
reserved.add("else");
reserved.add("finally");
reserved.add("for");
reserved.add("function");
reserved.add("if");
reserved.add("in");
reserved.add("instanceof");
reserved.add("new");
reserved.add("return");
reserved.add("switch");
reserved.add("this");
reserved.add("throw");
reserved.add("try");
reserved.add("typeof");
reserved.add("var");
reserved.add("void");
reserved.add("while");
reserved.add("with");
// Words reserved for future use
reserved.add("abstract");
reserved.add("boolean");
reserved.add("byte");
reserved.add("char");
reserved.add("class");
reserved.add("const");
reserved.add("debugger");
reserved.add("double");
reserved.add("enum");
reserved.add("export");
reserved.add("extends");
reserved.add("final");
reserved.add("float");
reserved.add("goto");
reserved.add("implements");
reserved.add("import");
reserved.add("int");
reserved.add("interface");
reserved.add("long");
reserved.add("native");
reserved.add("package");
reserved.add("private");
reserved.add("protected");
reserved.add("public");
reserved.add("short");
reserved.add("static");
reserved.add("super");
reserved.add("synchronized");
reserved.add("throws");
reserved.add("transient");
reserved.add("volatile");
// These are not reserved, but should be taken into account
// in isValidIdentifier (See jslint source code)
reserved.add("arguments");
reserved.add("eval");
reserved.add("true");
reserved.add("false");
reserved.add("Infinity");
reserved.add("NaN");
reserved.add("null");
reserved.add("undefined");
}