private static byte[] visitEnd() {
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
cw.visit(Opcodes.V1_1, Opcodes.ACC_PUBLIC, RubyIDClassName, null, "java/lang/Object", null);
Method staticBlock = Method.getMethod("void <clinit> ()V");
GeneratorAdapter staticBlockMg =
new GeneratorAdapter(Opcodes.ACC_STATIC, staticBlock, null, null, cw);
for (Map.Entry<String, String> e : idMap.entrySet()) {
cw.visitField(
Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC,
e.getValue(),
Types.RUBY_ID_TYPE.getDescriptor(),
null,
null);
staticBlockMg.push(e.getKey());
staticBlockMg.invokeStatic(
Type.getType(RubyID.class),
Method.getMethod("com.xruby.runtime.lang.RubyID intern(String)"));
staticBlockMg.putStatic(
Type.getType("L" + RubyIDClassName + ";"), e.getValue(), Types.RUBY_ID_TYPE);
}
staticBlockMg.returnValue();
staticBlockMg.endMethod();
cw.visitEnd();
return cw.toByteArray();
}
public static void main(final String args[]) throws Exception {
// Generates the bytecode corresponding to the following Java class:
//
// public class Example {
// public static void main (String[] args) {
// System.out.println("Hello world!");
// }
// }
// creates a ClassWriter for the Example public class,
// which inherits from Object
ClassWriter cw = new ClassWriter(0);
cw.visit(V1_1, ACC_PUBLIC, "Example", null, "java/lang/Object", null);
// creates a MethodWriter for the (implicit) constructor
MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
// pushes the 'this' variable
mw.visitVarInsn(ALOAD, 0);
// invokes the super class constructor
mw.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
mw.visitInsn(RETURN);
// this code uses a maximum of one stack element and one local variable
mw.visitMaxs(1, 1);
mw.visitEnd();
// creates a MethodWriter for the 'main' method
mw = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "main", "([Ljava/lang/String;)V", null, null);
// pushes the 'out' field (of type PrintStream) of the System class
mw.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
// pushes the "Hello World!" String constant
mw.visitLdcInsn("Hello world!");
// invokes the 'println' method (defined in the PrintStream class)
mw.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V");
mw.visitInsn(RETURN);
// this code uses a maximum of two stack elements and two local
// variables
mw.visitMaxs(2, 2);
mw.visitEnd();
// gets the bytecode of the Example class, and loads it dynamically
byte[] code = cw.toByteArray();
FileOutputStream fos = new FileOutputStream("Example.class");
fos.write(code);
fos.close();
Helloworld loader = new Helloworld();
Class<?> exampleClass = loader.defineClass("Example", code, 0, code.length);
// uses the dynamically generated class to print 'Helloworld'
exampleClass.getMethods()[0].invoke(null, new Object[] {null});
// ------------------------------------------------------------------------
// Same example with a GeneratorAdapter (more convenient but slower)
// ------------------------------------------------------------------------
cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
cw.visit(V1_1, ACC_PUBLIC, "Example", null, "java/lang/Object", null);
// creates a GeneratorAdapter for the (implicit) constructor
Method m = Method.getMethod("void <init> ()");
GeneratorAdapter mg = new GeneratorAdapter(ACC_PUBLIC, m, null, null, cw);
mg.loadThis();
mg.invokeConstructor(Type.getType(Object.class), m);
mg.returnValue();
mg.endMethod();
// creates a GeneratorAdapter for the 'main' method
m = Method.getMethod("void main (String[])");
mg = new GeneratorAdapter(ACC_PUBLIC + ACC_STATIC, m, null, null, cw);
mg.getStatic(Type.getType(System.class), "out", Type.getType(PrintStream.class));
mg.push("Hello world!");
mg.invokeVirtual(Type.getType(PrintStream.class), Method.getMethod("void println (String)"));
mg.returnValue();
mg.endMethod();
cw.visitEnd();
code = cw.toByteArray();
loader = new Helloworld();
exampleClass = loader.defineClass("Example", code, 0, code.length);
// uses the dynamically generated class to print 'Helloworld'
exampleClass.getMethods()[0].invoke(null, new Object[] {null});
}
public final class ASMUtil {
// private static final int VERSION_2=1;
// private static final int VERSION_3=2;
public static final short TYPE_ALL = 0;
public static final short TYPE_BOOLEAN = 1;
public static final short TYPE_NUMERIC = 2;
public static final short TYPE_STRING = 4;
// private static int version=0;
private static final Method CONSTRUCTOR_OBJECT = Method.getMethod("void <init> ()");
private static final Method _SRC_NAME = new Method("_srcName", Types.STRING, new Type[] {});
// private static final String VERSION_MESSAGE = "you use an invalid version of the ASM Jar,
// please update your jar files";
private static long id = 0;
/**
* Gibt zurueck ob das direkt uebergeordnete Tag mit dem uebergebenen Full-Name (Namespace und
* Name) existiert.
*
* @param el Startelement, von wo aus gesucht werden soll.
* @param fullName Name des gesuchten Tags.
* @return Existiert ein solches Tag oder nicht.
*/
public static boolean hasAncestorTag(Tag tag, String fullName) {
return getAncestorTag(tag, fullName) != null;
}
/**
* Gibt das uebergeordnete CFXD Tag Element zurueck, falls dies nicht existiert wird null
* zurueckgegeben.
*
* @param el Element von dem das parent Element zurueckgegeben werden soll.
* @return uebergeordnete CFXD Tag Element
*/
public static Tag getParentTag(Tag tag) {
Statement p = tag.getParent();
if (p == null) return null;
p = p.getParent();
if (p instanceof Tag) return (Tag) p;
return null;
}
public static boolean isParentTag(Tag tag, String fullName) {
Tag p = getParentTag(tag);
if (p == null) return false;
return p.getFullname().equalsIgnoreCase(fullName);
}
public static boolean isParentTag(Tag tag, Class clazz) {
Tag p = getParentTag(tag);
if (p == null) return false;
return p.getClass() == clazz;
}
public static boolean hasAncestorRetryFCStatement(Statement stat, String label) {
return getAncestorRetryFCStatement(stat, null, label) != null;
}
public static boolean hasAncestorBreakFCStatement(Statement stat, String label) {
return getAncestorBreakFCStatement(stat, null, label) != null;
}
public static boolean hasAncestorContinueFCStatement(Statement stat, String label) {
return getAncestorContinueFCStatement(stat, null, label) != null;
}
public static FlowControlRetry getAncestorRetryFCStatement(
Statement stat, List<FlowControlFinal> finallyLabels, String label) {
return (FlowControlRetry) getAncestorFCStatement(stat, finallyLabels, FlowControl.RETRY, label);
}
public static FlowControlBreak getAncestorBreakFCStatement(
Statement stat, List<FlowControlFinal> finallyLabels, String label) {
return (FlowControlBreak) getAncestorFCStatement(stat, finallyLabels, FlowControl.BREAK, label);
}
public static FlowControlContinue getAncestorContinueFCStatement(
Statement stat, List<FlowControlFinal> finallyLabels, String label) {
return (FlowControlContinue)
getAncestorFCStatement(stat, finallyLabels, FlowControl.CONTINUE, label);
}
private static FlowControl getAncestorFCStatement(
Statement stat, List<FlowControlFinal> finallyLabels, int flowType, String label) {
Statement parent = stat;
FlowControlFinal fcf;
while (true) {
parent = parent.getParent();
if (parent == null) return null;
if (((flowType == FlowControl.RETRY && parent instanceof FlowControlRetry)
|| (flowType == FlowControl.CONTINUE && parent instanceof FlowControlContinue)
|| (flowType == FlowControl.BREAK && parent instanceof FlowControlBreak))
&& labelMatch((FlowControl) parent, label)) {
if (parent instanceof ScriptBody) {
List<FlowControlFinal> _finallyLabels =
finallyLabels == null ? null : new ArrayList<FlowControlFinal>();
FlowControl scriptBodyParent =
getAncestorFCStatement(parent, _finallyLabels, flowType, label);
if (scriptBodyParent != null) {
if (finallyLabels != null) {
Iterator<FlowControlFinal> it = _finallyLabels.iterator();
while (it.hasNext()) {
finallyLabels.add(it.next());
}
}
return scriptBodyParent;
}
return (FlowControl) parent;
}
return (FlowControl) parent;
}
// only if not last
if (finallyLabels != null) {
fcf = parent.getFlowControlFinal();
if (fcf != null) {
finallyLabels.add(fcf);
}
}
}
}
private static boolean labelMatch(FlowControl fc, String label) {
if (StringUtil.isEmpty(label, true)) return true;
String fcl = fc.getLabel();
if (StringUtil.isEmpty(fcl, true)) return false;
return label.trim().equalsIgnoreCase(fcl.trim());
}
public static void leadFlow(BytecodeContext bc, Statement stat, int flowType, String label)
throws BytecodeException {
List<FlowControlFinal> finallyLabels = new ArrayList<FlowControlFinal>();
FlowControl fc;
String name;
if (FlowControl.BREAK == flowType) {
fc = ASMUtil.getAncestorBreakFCStatement(stat, finallyLabels, label);
name = "break";
} else if (FlowControl.CONTINUE == flowType) {
fc = ASMUtil.getAncestorContinueFCStatement(stat, finallyLabels, label);
name = "continue";
} else {
fc = ASMUtil.getAncestorRetryFCStatement(stat, finallyLabels, label);
name = "retry";
}
if (fc == null)
throw new BytecodeException(
name + " must be inside a loop (for,while,do-while,<cfloop>,<cfwhile> ...)",
stat.getStart());
GeneratorAdapter adapter = bc.getAdapter();
Label end;
if (FlowControl.BREAK == flowType) end = ((FlowControlBreak) fc).getBreakLabel();
else if (FlowControl.CONTINUE == flowType) end = ((FlowControlContinue) fc).getContinueLabel();
else end = ((FlowControlRetry) fc).getRetryLabel();
// first jump to all final labels
FlowControlFinal[] arr = finallyLabels.toArray(new FlowControlFinal[finallyLabels.size()]);
if (arr.length > 0) {
FlowControlFinal fcf;
for (int i = 0; i < arr.length; i++) {
fcf = arr[i];
// first
if (i == 0) {
adapter.visitJumpInsn(Opcodes.GOTO, fcf.getFinalEntryLabel());
}
// last
if (arr.length == i + 1) fcf.setAfterFinalGOTOLabel(end);
else fcf.setAfterFinalGOTOLabel(arr[i + 1].getFinalEntryLabel());
}
} else bc.getAdapter().visitJumpInsn(Opcodes.GOTO, end);
}
public static boolean hasAncestorTryStatement(Statement stat) {
return getAncestorTryStatement(stat) != null;
}
public static Statement getAncestorTryStatement(Statement stat) {
Statement parent = stat;
while (true) {
parent = parent.getParent();
if (parent == null) return null;
if (parent instanceof TagTry) {
return parent;
} else if (parent instanceof TryCatchFinally) {
return parent;
}
}
}
/**
* Gibt ein uebergeordnetes Tag mit dem uebergebenen Full-Name (Namespace und Name) zurueck, falls
* ein solches existiert, andernfalls wird null zurueckgegeben.
*
* @param el Startelement, von wo aus gesucht werden soll.
* @param fullName Name des gesuchten Tags.
* @return uebergeornetes Element oder null.
*/
public static Tag getAncestorTag(Tag tag, String fullName) {
Statement parent = tag;
while (true) {
parent = parent.getParent();
if (parent == null) return null;
if (parent instanceof Tag) {
tag = (Tag) parent;
if (tag.getFullname().equalsIgnoreCase(fullName)) return tag;
}
}
}
/**
* extract the content of a attribut
*
* @param cfxdTag
* @param attrName
* @return attribute value
* @throws EvaluatorException
*/
public static Boolean getAttributeBoolean(Tag tag, String attrName) throws EvaluatorException {
Boolean b = getAttributeLiteral(tag, attrName).getBoolean(null);
if (b == null)
throw new EvaluatorException("attribute [" + attrName + "] must be a constant boolean value");
return b;
}
/**
* extract the content of a attribut
*
* @param cfxdTag
* @param attrName
* @return attribute value
* @throws EvaluatorException
*/
public static Boolean getAttributeBoolean(Tag tag, String attrName, Boolean defaultValue) {
Literal lit = getAttributeLiteral(tag, attrName, null);
if (lit == null) return defaultValue;
return lit.getBoolean(defaultValue);
}
/**
* extract the content of a attribut
*
* @param cfxdTag
* @param attrName
* @return attribute value
* @throws EvaluatorException
*/
public static String getAttributeString(Tag tag, String attrName) throws EvaluatorException {
return getAttributeLiteral(tag, attrName).getString();
}
/**
* extract the content of a attribut
*
* @param cfxdTag
* @param attrName
* @return attribute value
* @throws EvaluatorException
*/
public static String getAttributeString(Tag tag, String attrName, String defaultValue) {
Literal lit = getAttributeLiteral(tag, attrName, null);
if (lit == null) return defaultValue;
return lit.getString();
}
/**
* extract the content of a attribut
*
* @param cfxdTag
* @param attrName
* @return attribute value
* @throws EvaluatorException
*/
public static Literal getAttributeLiteral(Tag tag, String attrName) throws EvaluatorException {
Attribute attr = tag.getAttribute(attrName);
if (attr != null && attr.getValue() instanceof Literal) return ((Literal) attr.getValue());
throw new EvaluatorException("attribute [" + attrName + "] must be a constant value");
}
/**
* extract the content of a attribut
*
* @param cfxdTag
* @param attrName
* @return attribute value
* @throws EvaluatorException
*/
public static Literal getAttributeLiteral(Tag tag, String attrName, Literal defaultValue) {
Attribute attr = tag.getAttribute(attrName);
if (attr != null && attr.getValue() instanceof Literal) return ((Literal) attr.getValue());
return defaultValue;
}
/**
* Prueft ob das das angegebene Tag in der gleichen Ebene nach dem angegebenen Tag vorkommt.
*
* @param tag Ausgangspunkt, nach diesem tag darf das angegebene nicht vorkommen.
* @param nameToFind Tag Name der nicht vorkommen darf
* @return kommt das Tag vor.
*/
public static boolean hasSisterTagAfter(Tag tag, String nameToFind) {
Body body = (Body) tag.getParent();
List<Statement> stats = body.getStatements();
Iterator<Statement> it = stats.iterator();
Statement other;
boolean isAfter = false;
while (it.hasNext()) {
other = it.next();
if (other instanceof Tag) {
if (isAfter) {
if (((Tag) other).getTagLibTag().getName().equals(nameToFind)) return true;
} else if (other == tag) isAfter = true;
}
}
return false;
}
/**
* Prueft ob das angegebene Tag innerhalb seiner Ebene einmalig ist oder nicht.
*
* @param tag Ausgangspunkt, nach diesem tag darf das angegebene nicht vorkommen.
* @return kommt das Tag vor.
*/
public static boolean hasSisterTagWithSameName(Tag tag) {
Body body = (Body) tag.getParent();
List<Statement> stats = body.getStatements();
Iterator<Statement> it = stats.iterator();
Statement other;
String name = tag.getTagLibTag().getName();
while (it.hasNext()) {
other = it.next();
if (other != tag
&& other instanceof Tag
&& ((Tag) other).getTagLibTag().getName().equals(name)) return true;
}
return false;
}
/**
* remove this tag from his parent body
*
* @param tag
*/
public static void remove(Tag tag) {
Body body = (Body) tag.getParent();
body.getStatements().remove(tag);
}
/**
* replace src with trg
*
* @param src
* @param trg
*/
public static void replace(Tag src, Tag trg, boolean moveBody) {
trg.setParent(src.getParent());
Body p = (Body) src.getParent();
List<Statement> stats = p.getStatements();
Iterator<Statement> it = stats.iterator();
Statement stat;
int count = 0;
while (it.hasNext()) {
stat = it.next();
if (stat == src) {
if (moveBody && src.getBody() != null) src.getBody().setParent(trg);
stats.set(count, trg);
break;
}
count++;
}
}
public static Page getAncestorPage(Statement stat) throws BytecodeException {
Statement parent = stat;
while (true) {
parent = parent.getParent();
if (parent == null) {
throw new BytecodeException("missing parent Statement of Statement", stat.getStart());
// return null;
}
if (parent instanceof Page) return (Page) parent;
}
}
public static Page getAncestorPage(Statement stat, Page defaultValue) {
Statement parent = stat;
while (true) {
parent = parent.getParent();
if (parent == null) {
return defaultValue;
}
if (parent instanceof Page) return (Page) parent;
}
}
public static void listAncestor(Statement stat) {
Statement parent = stat;
aprint.o(stat);
while (true) {
parent = parent.getParent();
if (parent instanceof Page)
aprint.o("page-> " + ((Page) parent).getPageSource().getDisplayPath());
else aprint.o("parent-> " + parent);
if (parent == null) break;
}
}
public static Tag getAncestorComponent(Statement stat) throws BytecodeException {
// print.ln("getAncestorPage:"+stat);
Statement parent = stat;
while (true) {
parent = parent.getParent();
// print.ln(" - "+parent);
if (parent == null) {
throw new BytecodeException("missing parent Statement of Statement", stat.getStart());
// return null;
}
if (parent instanceof TagComponent)
// if(parent instanceof Tag && "component".equals(((Tag)parent).getTagLibTag().getName()))
return (Tag) parent;
}
}
public static Statement getRoot(Statement stat) {
while (true) {
if (isRoot(stat)) {
return stat;
}
stat = stat.getParent();
}
}
public static boolean isRoot(Statement statement) {
// return statement instanceof Page || (statement instanceof Tag &&
// "component".equals(((Tag)statement).getTagLibTag().getName()));
return statement instanceof Page || statement instanceof TagComponent;
}
public static void invokeMethod(GeneratorAdapter adapter, Type type, Method method) {
if (type.getClass().isInterface()) adapter.invokeInterface(type, method);
else adapter.invokeVirtual(type, method);
}
public static byte[] createPojo(
String className, ASMProperty[] properties, Class parent, Class[] interfaces, String srcName)
throws PageException {
className = className.replace('.', '/');
className = className.replace('\\', '/');
className = ListUtil.trim(className, "/");
String[] inter = null;
if (interfaces != null) {
inter = new String[interfaces.length];
for (int i = 0; i < inter.length; i++) {
inter[i] = interfaces[i].getName().replace('.', '/');
}
}
// CREATE CLASS
ClassWriter cw = ASMUtil.getClassWriter();
cw.visit(
Opcodes.V1_6,
Opcodes.ACC_PUBLIC,
className,
null,
parent.getName().replace('.', '/'),
inter);
String md5;
try {
md5 = createMD5(properties);
} catch (Throwable t) {
md5 = "";
t.printStackTrace();
}
FieldVisitor fv =
cw.visitField(
Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_STATIC,
"_md5_",
"Ljava/lang/String;",
null,
md5);
fv.visitEnd();
// Constructor
GeneratorAdapter adapter =
new GeneratorAdapter(Opcodes.ACC_PUBLIC, CONSTRUCTOR_OBJECT, null, null, cw);
adapter.loadThis();
adapter.invokeConstructor(toType(parent, true), CONSTRUCTOR_OBJECT);
adapter.returnValue();
adapter.endMethod();
// properties
for (int i = 0; i < properties.length; i++) {
createProperty(cw, className, properties[i]);
}
// complexType src
if (!StringUtil.isEmpty(srcName)) {
GeneratorAdapter _adapter =
new GeneratorAdapter(
Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_STATIC,
_SRC_NAME,
null,
null,
cw);
_adapter.push(srcName);
_adapter.returnValue();
_adapter.endMethod();
}
cw.visitEnd();
return cw.toByteArray();
}
private static void createProperty(ClassWriter cw, String classType, ASMProperty property)
throws PageException {
String name = property.getName();
Type type = property.getASMType();
Class clazz = property.getClazz();
cw.visitField(Opcodes.ACC_PRIVATE, name, type.toString(), null, null).visitEnd();
int load = loadFor(type);
// int sizeOf=sizeOf(type);
// get<PropertyName>():<type>
Type[] types = new Type[0];
Method method =
new Method(
(clazz == boolean.class ? "get" : "get") + StringUtil.ucFirst(name), type, types);
GeneratorAdapter adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, method, null, null, cw);
Label start = new Label();
adapter.visitLabel(start);
adapter.visitVarInsn(Opcodes.ALOAD, 0);
adapter.visitFieldInsn(Opcodes.GETFIELD, classType, name, type.toString());
adapter.returnValue();
Label end = new Label();
adapter.visitLabel(end);
adapter.visitLocalVariable("this", "L" + classType + ";", null, start, end, 0);
adapter.visitEnd();
adapter.endMethod();
// set<PropertyName>(object):void
types = new Type[] {type};
method = new Method("set" + StringUtil.ucFirst(name), Types.VOID, types);
adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, method, null, null, cw);
start = new Label();
adapter.visitLabel(start);
adapter.visitVarInsn(Opcodes.ALOAD, 0);
adapter.visitVarInsn(load, 1);
adapter.visitFieldInsn(Opcodes.PUTFIELD, classType, name, type.toString());
adapter.visitInsn(Opcodes.RETURN);
end = new Label();
adapter.visitLabel(end);
adapter.visitLocalVariable("this", "L" + classType + ";", null, start, end, 0);
adapter.visitLocalVariable(name, type.toString(), null, start, end, 1);
// adapter.visitMaxs(0, 0);//.visitMaxs(sizeOf+1, sizeOf+1);// hansx
adapter.visitEnd();
adapter.endMethod();
}
public static int loadFor(Type type) {
if (type.equals(Types.BOOLEAN_VALUE)
|| type.equals(Types.INT_VALUE)
|| type.equals(Types.CHAR)
|| type.equals(Types.SHORT_VALUE)) return Opcodes.ILOAD;
if (type.equals(Types.FLOAT_VALUE)) return Opcodes.FLOAD;
if (type.equals(Types.LONG_VALUE)) return Opcodes.LLOAD;
if (type.equals(Types.DOUBLE_VALUE)) return Opcodes.DLOAD;
return Opcodes.ALOAD;
}
public static int sizeOf(Type type) {
if (type.equals(Types.LONG_VALUE) || type.equals(Types.DOUBLE_VALUE)) return 2;
return 1;
}
/**
* translate a string cfml type definition to a Type Object
*
* @param cfType
* @param axistype
* @return
* @throws PageException
*/
public static Type toType(String cfType, boolean axistype) throws PageException {
return toType(Caster.cfTypeToClass(cfType), axistype);
}
/**
* translate a string cfml type definition to a Type Object
*
* @param cfType
* @param axistype
* @return
* @throws PageException
*/
public static Type toType(Class type, boolean axistype) {
if (axistype) type = AxisCaster.toAxisTypeClass(type);
return Type.getType(type);
}
public static String createMD5(ASMProperty[] props) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < props.length; i++) {
sb.append("name:" + props[i].getName() + ";");
if (props[i] instanceof Property) {
sb.append("type:" + ((Property) props[i]).getType() + ";");
} else {
try {
sb.append("type:" + props[i].getASMType() + ";");
} catch (PageException e) {
}
}
}
try {
return MD5.getDigestAsString(sb.toString());
} catch (IOException e) {
return "";
}
}
public static void removeLiterlChildren(Tag tag, boolean recursive) {
Body body = tag.getBody();
if (body != null) {
List<Statement> list = body.getStatements();
Statement[] stats = list.toArray(new Statement[list.size()]);
PrintOut po;
Tag t;
for (int i = 0; i < stats.length; i++) {
if (stats[i] instanceof PrintOut) {
po = (PrintOut) stats[i];
if (po.getExpr() instanceof Literal) {
body.getStatements().remove(po);
}
} else if (recursive && stats[i] instanceof Tag) {
t = (Tag) stats[i];
if (t.getTagLibTag().isAllowRemovingLiteral()) {
removeLiterlChildren(t, recursive);
}
}
}
}
}
public static synchronized String getId() {
if (id < 0) id = 0;
return StringUtil.addZeros(++id, 6);
}
public static boolean isEmpty(Body body) {
return body == null || body.isEmpty();
}
/**
* @param adapter
* @param expr
* @param mode
*/
public static void pop(GeneratorAdapter adapter, Expression expr, int mode) {
if (mode == Expression.MODE_VALUE && (expr instanceof ExprDouble)) adapter.pop2();
else adapter.pop();
}
public static void pop(GeneratorAdapter adapter, Type type) {
if (type.equals(Types.DOUBLE_VALUE)) adapter.pop2();
else if (type.equals(Types.VOID)) ;
else adapter.pop();
}
public static ClassWriter getClassWriter() {
return new ClassWriter(ClassWriter.COMPUTE_MAXS); // |ClassWriter.COMPUTE_FRAMES);
}
public static String createOverfowMethod(
String prefix, int id) { // pattern is used in function callstackget
if (StringUtil.isEmpty(prefix)) prefix = "call";
return prefix + "_" + StringUtil.addZeros(id, 6);
}
public static boolean isOverfowMethod(String name) {
return name.length() > 6
&& Decision.isNumeric(name.substring(name.length() - 6, name.length()));
// return name.startsWith("_call") && name.length()>=11;
}
public static boolean isDotKey(ExprString expr) {
return expr instanceof LitString && !((LitString) expr).fromBracket();
}
public static String toString(Expression exp, String defaultValue) {
try {
return toString(exp);
} catch (BytecodeException e) {
return defaultValue;
}
}
public static String toString(Expression exp) throws BytecodeException {
if (exp instanceof Variable) {
return toString(VariableString.toExprString(exp));
} else if (exp instanceof VariableString) {
return ((VariableString) exp).castToString();
} else if (exp instanceof Literal) {
return ((Literal) exp).toString();
}
return null;
}
public static Boolean toBoolean(Attribute attr, Position start) throws BytecodeException {
if (attr == null) throw new BytecodeException("attribute does not exist", start);
if (attr.getValue() instanceof Literal) {
Boolean b = ((Literal) attr.getValue()).getBoolean(null);
if (b != null) return b;
}
throw new BytecodeException(
"attribute [" + attr.getName() + "] must be a constant boolean value", start);
}
public static Boolean toBoolean(Attribute attr, int line, Boolean defaultValue) {
if (attr == null) return defaultValue;
if (attr.getValue() instanceof Literal) {
Boolean b = ((Literal) attr.getValue()).getBoolean(null);
if (b != null) return b;
}
return defaultValue;
}
public static boolean isCFC(Statement s) {
Statement p;
while ((p = s.getParent()) != null) {
s = p;
}
return true;
}
public static boolean isLiteralAttribute(
Tag tag, String attrName, short type, boolean required, boolean throwWhenNot)
throws EvaluatorException {
return isLiteralAttribute(tag, tag.getAttribute(attrName), type, required, throwWhenNot);
}
public static boolean isLiteralAttribute(
Tag tag, Attribute attr, short type, boolean required, boolean throwWhenNot)
throws EvaluatorException {
String strType = "/constant";
if (attr != null && !isNull(attr.getValue())) {
switch (type) {
case TYPE_ALL:
if (attr.getValue() instanceof Literal) return true;
break;
case TYPE_BOOLEAN:
if (CastBoolean.toExprBoolean(attr.getValue()) instanceof LitBoolean) return true;
strType = " boolean";
break;
case TYPE_NUMERIC:
if (CastDouble.toExprDouble(attr.getValue()) instanceof LitDouble) return true;
strType = " numeric";
break;
case TYPE_STRING:
if (CastString.toExprString(attr.getValue()) instanceof LitString) return true;
strType = " string";
break;
}
if (!throwWhenNot) return false;
throw new EvaluatorException(
"Attribute ["
+ attr.getName()
+ "] of the Tag ["
+ tag.getFullname()
+ "] must be a literal"
+ strType
+ " value. "
+ "attributes java class type "
+ attr.getValue().getClass().getName());
}
if (required) {
if (!throwWhenNot) return false;
throw new EvaluatorException(
"Attribute [" + attr.getName() + "] of the Tag [" + tag.getFullname() + "] is required");
}
return false;
}
public static boolean isNull(Expression expr) {
if (expr instanceof NullExpression) return true;
if (expr instanceof Cast) {
return isNull(((Cast) expr).getExpr());
}
return false;
}
public static boolean isRefType(Type type) {
return !(type == Types.BYTE_VALUE
|| type == Types.BOOLEAN_VALUE
|| type == Types.CHAR
|| type == Types.DOUBLE_VALUE
|| type == Types.FLOAT_VALUE
|| type == Types.INT_VALUE
|| type == Types.LONG_VALUE
|| type == Types.SHORT_VALUE);
}
public static Type toRefType(Type type) {
if (type == Types.BYTE_VALUE) return Types.BYTE;
if (type == Types.BOOLEAN_VALUE) return Types.BOOLEAN;
if (type == Types.CHAR) return Types.CHARACTER;
if (type == Types.DOUBLE_VALUE) return Types.DOUBLE;
if (type == Types.FLOAT_VALUE) return Types.FLOAT;
if (type == Types.INT_VALUE) return Types.INTEGER;
if (type == Types.LONG_VALUE) return Types.LONG;
if (type == Types.SHORT_VALUE) return Types.SHORT;
return type;
}
/**
* return value type only when there is one
*
* @param type
* @return
*/
public static Type toValueType(Type type) {
if (type == Types.BYTE) return Types.BYTE_VALUE;
if (type == Types.BOOLEAN) return Types.BOOLEAN_VALUE;
if (type == Types.CHARACTER) return Types.CHAR;
if (type == Types.DOUBLE) return Types.DOUBLE_VALUE;
if (type == Types.FLOAT) return Types.FLOAT_VALUE;
if (type == Types.INTEGER) return Types.INT_VALUE;
if (type == Types.LONG) return Types.LONG_VALUE;
if (type == Types.SHORT) return Types.SHORT_VALUE;
return type;
}
public static Class getValueTypeClass(Type type, Class defaultValue) {
if (type == Types.BYTE_VALUE) return byte.class;
if (type == Types.BOOLEAN_VALUE) return boolean.class;
if (type == Types.CHAR) return char.class;
if (type == Types.DOUBLE_VALUE) return double.class;
if (type == Types.FLOAT_VALUE) return float.class;
if (type == Types.INT_VALUE) return int.class;
if (type == Types.LONG_VALUE) return long.class;
if (type == Types.SHORT_VALUE) return short.class;
return defaultValue;
}
public static ASMProperty[] toASMProperties(Property[] properties) {
ASMProperty[] asmp = new ASMProperty[properties.length];
for (int i = 0; i < asmp.length; i++) {
asmp[i] = (ASMProperty) properties[i];
}
return asmp;
}
public static boolean containsComponent(Body body) {
if (body == null) return false;
Iterator<Statement> it = body.getStatements().iterator();
while (it.hasNext()) {
if (it.next() instanceof TagComponent) return true;
}
return false;
}
public static void dummy1(BytecodeContext bc) {
bc.getAdapter()
.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/System", "currentTimeMillis", "()J");
bc.getAdapter().visitInsn(Opcodes.POP2);
}
public static void dummy2(BytecodeContext bc) {
bc.getAdapter().visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/System", "nanoTime", "()J");
bc.getAdapter().visitInsn(Opcodes.POP2);
}
/**
* convert a clas array to a type array
*
* @param classes
* @return
*/
public static Type[] toTypes(Class<?>[] classes) {
if (classes == null || classes.length == 0) return new Type[0];
Type[] types = new Type[classes.length];
for (int i = 0; i < classes.length; i++) {
types[i] = Type.getType(classes[i]);
}
return types;
}
public static String display(ExprString name) {
if (name instanceof Literal) {
if (name instanceof Identifier) return ((Identifier) name).getRaw();
return ((Literal) name).getString();
}
return name.toString();
}
public static Literal cachedWithinValue(Expression val) throws EvaluatorException {
if (val instanceof Literal) {
Literal l = (Literal) val;
// double == days
Double d = l.getDouble(null);
if (d != null) {
return new LitLong(TimeSpanImpl.fromDays(d.doubleValue()).getMillis(), null, null);
}
// request
String str = l.getString();
if (str != null && "request".equalsIgnoreCase(str.trim()))
return new LitString("request", null, null);
throw cacheWithinException();
}
// createTimespan
else if (val instanceof Variable) {
Variable var = (Variable) val;
if (var.getMembers().size() == 1) {
Member first = var.getFirstMember();
if (first instanceof BIF) {
BIF bif = (BIF) first;
if ("createTimeSpan".equalsIgnoreCase(bif.getFlf().getName())) {
Argument[] args = bif.getArguments();
int len = ArrayUtil.size(args);
if (len >= 4 && len <= 5) {
double days = toDouble(args[0].getValue());
double hours = toDouble(args[1].getValue());
double minutes = toDouble(args[2].getValue());
double seconds = toDouble(args[3].getValue());
double millis = len == 5 ? toDouble(args[4].getValue()) : 0;
return new LitLong(
new TimeSpanImpl(
(int) days, (int) hours, (int) minutes, (int) seconds, (int) millis)
.getMillis(),
null,
null);
}
}
}
}
}
throw cacheWithinException();
}
private static EvaluatorException cacheWithinException() {
return new EvaluatorException(
"value of cachedWithin must be a literal timespan, like 0.1 or createTimespan(1,2,3,4) or the string \"request\" or the string \"smart\"");
}
private static double toDouble(Expression e) throws EvaluatorException {
if (!(e instanceof Literal))
throw new EvaluatorException(
"Paremeters of the function createTimeSpan have to be literal numeric values in this context");
Double d = ((Literal) e).getDouble(null);
if (d == null)
throw new EvaluatorException(
"Paremeters of the function createTimeSpan have to be literal numeric values in this context");
return d.doubleValue();
}
public static void visitLabel(GeneratorAdapter ga, Label label) {
if (label != null) ga.visitLabel(label);
}
public static String getClassName(Resource res) throws IOException {
byte[] src = IOUtil.toBytes(res);
ClassReader cr = new ClassReader(src);
return cr.getClassName();
}
public static String getClassName(byte[] barr) {
return new ClassReader(barr).getClassName();
}
public static SourceInfo getSourceInfo(Config config, Class clazz, boolean onlyCFC)
throws IOException {
return SourceNameClassVisitor.getSourceInfo(config, clazz, onlyCFC);
}
public static boolean hasOnlyDataMembers(Variable var) {
Iterator<Member> it = var.getMembers().iterator();
Member m;
while (it.hasNext()) {
m = it.next();
if (!(m instanceof DataMember)) return false;
}
return true;
}
public static int count(List<Statement> statements, boolean recursive) {
if (statements == null) return 0;
int count = 0;
Iterator<Statement> it = statements.iterator();
while (it.hasNext()) {
count += count(it.next(), recursive);
}
return count;
}
public static int count(Statement s, boolean recursive) {
int count = 1;
if (recursive && s instanceof HasBody) {
Body b = ((HasBody) s).getBody();
if (b != null) count += count(b.getStatements(), recursive);
}
return count;
}
public static void dump(Statement s, int level) {
for (int i = 0; i < level; i++) System.err.print("-");
aprint.e(s.getClass().getName());
if (s instanceof HasBody) {
Body b = ((HasBody) s).getBody();
if (b != null) {
Iterator<Statement> it = b.getStatements().iterator();
while (it.hasNext()) {
dump(it.next(), level + 1);
}
}
}
}
public static void size(ClassWriter cw) {
try {
MethodVisitor mw = null;
Field[] fields = cw.getClass().getDeclaredFields();
Field f;
for (int i = 0; i < fields.length; i++) {
f = fields[i];
if (f.getType().getName().equals("org.objectweb.asm.MethodWriter")) {
f.setAccessible(true);
mw = (MethodVisitor) f.get(cw);
break;
}
}
} catch (Throwable t) {
// TODO Auto-generated catch block
t.printStackTrace();
}
}
public static void createEmptyStruct(GeneratorAdapter adapter) {
adapter.newInstance(Types.STRUCT_IMPL);
adapter.dup();
adapter.invokeConstructor(Types.STRUCT_IMPL, Page.INIT_STRUCT_IMPL);
}
public static void createEmptyArray(GeneratorAdapter adapter) {
adapter.newInstance(Types.ARRAY_IMPL);
adapter.dup();
adapter.invokeConstructor(Types.ARRAY_IMPL, Switch.INIT);
}
}