use of org.mvel2.OptimizationFailure in project mvel by mvel.
the class ASMAccessorOptimizer method getMethod.
@SuppressWarnings({ "unchecked" })
private Object getMethod(Object ctx, String name) throws IllegalAccessException, InvocationTargetException {
assert debug("\n ** {method: " + name + "}");
int st = cursor;
String tk = cursor != end && expr[cursor] == '(' && ((cursor = balancedCapture(expr, cursor, '(')) - st) > 1 ? new String(expr, st + 1, cursor - st - 1) : "";
cursor++;
Object[] preConvArgs;
Object[] args;
Class[] argTypes;
ExecutableStatement[] es;
List<char[]> subtokens;
if (tk.length() == 0) {
args = preConvArgs = ParseTools.EMPTY_OBJ_ARR;
argTypes = ParseTools.EMPTY_CLS_ARR;
es = null;
subtokens = null;
} else {
subtokens = parseParameterList(tk.toCharArray(), 0, -1);
es = new ExecutableStatement[subtokens.size()];
args = new Object[subtokens.size()];
argTypes = new Class[subtokens.size()];
preConvArgs = new Object[es.length];
for (int i = 0; i < subtokens.size(); i++) {
assert debug("subtoken[" + i + "] { " + new String(subtokens.get(i)) + " }");
preConvArgs[i] = args[i] = (es[i] = (ExecutableStatement) subCompileExpression(subtokens.get(i), pCtx)).getValue(this.thisRef, this.thisRef, variableFactory);
if (es[i].isExplicitCast())
argTypes[i] = es[i].getKnownEgressType();
}
if (pCtx.isStrictTypeEnforcement()) {
for (int i = 0; i < args.length; i++) {
argTypes[i] = es[i].getKnownEgressType();
}
} else {
for (int i = 0; i < args.length; i++) {
if (argTypes[i] != null)
continue;
if (es[i].getKnownEgressType() == Object.class) {
argTypes[i] = args[i] == null ? null : args[i].getClass();
} else {
argTypes[i] = es[i].getKnownEgressType();
}
}
}
}
if (first && variableFactory != null && variableFactory.isResolveable(name)) {
Object ptr = variableFactory.getVariableResolver(name).getValue();
if (ptr instanceof Method) {
ctx = ((Method) ptr).getDeclaringClass();
name = ((Method) ptr).getName();
} else if (ptr instanceof MethodStub) {
ctx = ((MethodStub) ptr).getClassReference();
name = ((MethodStub) ptr).getMethodName();
} else if (ptr instanceof FunctionInstance) {
if (es != null && es.length != 0) {
compiledInputs.addAll(Arrays.asList(es));
intPush(es.length);
assert debug("ANEWARRAY [" + es.length + "]");
mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");
assert debug("ASTORE 4");
mv.visitVarInsn(ASTORE, 4);
for (int i = 0; i < es.length; i++) {
assert debug("ALOAD 4");
mv.visitVarInsn(ALOAD, 4);
intPush(i);
loadField(i);
assert debug("ALOAD 1");
mv.visitVarInsn(ALOAD, 1);
assert debug("ALOAD 3");
mv.visitIntInsn(ALOAD, 3);
assert debug("INVOKEINTERFACE ExecutableStatement.getValue");
mv.visitMethodInsn(INVOKEINTERFACE, NAMESPACE + "compiler/ExecutableStatement", "getValue", "(Ljava/lang/Object;L" + NAMESPACE + "integration/VariableResolverFactory;)Ljava/lang/Object;");
assert debug("AASTORE");
mv.visitInsn(AASTORE);
}
} else {
assert debug("ACONST_NULL");
mv.visitInsn(ACONST_NULL);
assert debug("CHECKCAST java/lang/Object");
mv.visitTypeInsn(CHECKCAST, "[Ljava/lang/Object;");
assert debug("ASTORE 4");
mv.visitVarInsn(ASTORE, 4);
}
if (variableFactory.isIndexedFactory() && variableFactory.isTarget(name)) {
loadVariableByIndex(variableFactory.variableIndexOf(name));
} else {
loadVariableByName(name);
}
checkcast(FunctionInstance.class);
assert debug("ALOAD 1");
mv.visitVarInsn(ALOAD, 1);
assert debug("ALOAD 2");
mv.visitVarInsn(ALOAD, 2);
assert debug("ALOAD 3");
mv.visitVarInsn(ALOAD, 3);
assert debug("ALOAD 4");
mv.visitVarInsn(ALOAD, 4);
assert debug("INVOKEVIRTUAL Function.call");
mv.visitMethodInsn(INVOKEVIRTUAL, getInternalName(FunctionInstance.class), "call", "(Ljava/lang/Object;Ljava/lang/Object;L" + NAMESPACE + "integration/VariableResolverFactory;[Ljava/lang/Object;)Ljava/lang/Object;");
return ((FunctionInstance) ptr).call(ctx, thisRef, variableFactory, args);
} else {
throw new OptimizationFailure("attempt to optimize a method call for a reference that does not point to a method: " + name + " (reference is type: " + (ctx != null ? ctx.getClass().getName() : null) + ")");
}
first = false;
} else if (returnType != null && returnType.isPrimitive()) {
// noinspection unchecked
wrapPrimitive(returnType);
}
/**
* If the target object is an instance of java.lang.Class itself then do not
* adjust the Class scope target.
*/
boolean classTarget = false;
Class<?> cls = currType != null ? currType : ((classTarget = ctx instanceof Class) ? (Class<?>) ctx : ctx.getClass());
currType = null;
Method m;
Class[] parameterTypes = null;
/**
* Try to find an instance method from the class target.
*/
if ((m = getBestCandidate(argTypes, name, cls, cls.getMethods(), false, classTarget)) != null) {
parameterTypes = m.getParameterTypes();
}
if (m == null && classTarget) {
/**
* If we didn't find anything, maybe we're looking for the actual java.lang.Class methods.
*/
if ((m = getBestCandidate(argTypes, name, cls, Class.class.getMethods(), false)) != null) {
parameterTypes = m.getParameterTypes();
}
}
// If we didn't find anything and the declared class is different from the actual one try also with the actual one
if (m == null && cls != ctx.getClass() && !(ctx instanceof Class)) {
cls = ctx.getClass();
if ((m = getBestCandidate(argTypes, name, cls, cls.getMethods(), false, classTarget)) != null) {
parameterTypes = m.getParameterTypes();
}
}
if (es != null && m != null && m.isVarArgs() && (es.length != parameterTypes.length || !(es[es.length - 1] instanceof ExecutableAccessor))) {
// normalize ExecutableStatement for varargs
ExecutableStatement[] varArgEs = new ExecutableStatement[parameterTypes.length];
int varArgStart = parameterTypes.length - 1;
for (int i = 0; i < varArgStart; i++) varArgEs[i] = es[i];
String varargsTypeName = parameterTypes[parameterTypes.length - 1].getComponentType().getName();
String varArgExpr;
if ("null".equals(tk)) {
// if null is the token no need for wrapping
varArgExpr = tk;
} else {
StringBuilder sb = new StringBuilder("new ").append(varargsTypeName).append("[] {");
for (int i = varArgStart; i < subtokens.size(); i++) {
sb.append(subtokens.get(i));
if (i < subtokens.size() - 1)
sb.append(",");
}
varArgExpr = sb.append("}").toString();
}
char[] token = varArgExpr.toCharArray();
varArgEs[varArgStart] = ((ExecutableStatement) subCompileExpression(token, pCtx));
es = varArgEs;
if (preConvArgs.length == parameterTypes.length - 1) {
// empty vararg
Object[] preConvArgsForVarArg = new Object[parameterTypes.length];
for (int i = 0; i < preConvArgs.length; i++) preConvArgsForVarArg[i] = preConvArgs[i];
preConvArgsForVarArg[parameterTypes.length - 1] = Array.newInstance(parameterTypes[parameterTypes.length - 1].getComponentType(), 0);
preConvArgs = preConvArgsForVarArg;
}
}
int inputsOffset = compiledInputs.size();
if (es != null) {
for (ExecutableStatement e : es) {
if (e instanceof ExecutableLiteral) {
continue;
}
compiledInputs.add(e);
}
}
if (first) {
assert debug("ALOAD 1 (D) ");
mv.visitVarInsn(ALOAD, 1);
}
if (m == null) {
StringAppender errorBuild = new StringAppender();
if (parameterTypes != null) {
for (int i = 0; i < args.length; i++) {
errorBuild.append(parameterTypes[i] != null ? parameterTypes[i].getClass().getName() : null);
if (i < args.length - 1)
errorBuild.append(", ");
}
}
if ("size".equals(name) && args.length == 0 && cls.isArray()) {
anyArrayCheck(cls);
assert debug("ARRAYLENGTH");
mv.visitInsn(ARRAYLENGTH);
wrapPrimitive(int.class);
return getLength(ctx);
}
throw new CompileException("unable to resolve method: " + cls.getName() + "." + name + "(" + errorBuild.toString() + ") [arglength=" + args.length + "]", expr, st);
} else {
m = getWidenedTarget(m);
if (es != null) {
ExecutableStatement cExpr;
for (int i = 0; i < es.length; i++) {
if ((cExpr = es[i]).getKnownIngressType() == null) {
cExpr.setKnownIngressType(parameterTypes[i]);
cExpr.computeTypeConversionRule();
}
if (!cExpr.isConvertableIngressEgress() && i < args.length) {
args[i] = convert(args[i], paramTypeVarArgsSafe(parameterTypes, i, m.isVarArgs()));
}
}
} else {
/**
* Coerce any types if required.
*/
for (int i = 0; i < args.length; i++) {
args[i] = convert(args[i], paramTypeVarArgsSafe(parameterTypes, i, m.isVarArgs()));
}
}
if (m.getParameterTypes().length == 0) {
if ((m.getModifiers() & STATIC) != 0) {
assert debug("INVOKESTATIC " + m.getName());
mv.visitMethodInsn(INVOKESTATIC, getInternalName(m.getDeclaringClass()), m.getName(), getMethodDescriptor(m));
} else {
assert debug("CHECKCAST " + getInternalName(m.getDeclaringClass()));
mv.visitTypeInsn(CHECKCAST, getInternalName(m.getDeclaringClass()));
if (m.getDeclaringClass().isInterface()) {
assert debug("INVOKEINTERFACE " + m.getName());
mv.visitMethodInsn(INVOKEINTERFACE, getInternalName(m.getDeclaringClass()), m.getName(), getMethodDescriptor(m));
} else {
assert debug("INVOKEVIRTUAL " + m.getName());
mv.visitMethodInsn(INVOKEVIRTUAL, getInternalName(m.getDeclaringClass()), m.getName(), getMethodDescriptor(m));
}
}
returnType = m.getReturnType();
stacksize++;
} else {
if ((m.getModifiers() & STATIC) == 0) {
assert debug("CHECKCAST " + getInternalName(cls));
mv.visitTypeInsn(CHECKCAST, getInternalName(cls));
}
Class<?> aClass = m.getParameterTypes()[m.getParameterTypes().length - 1];
if (m.isVarArgs()) {
if (es == null || es.length == (m.getParameterTypes().length - 1)) {
ExecutableStatement[] executableStatements = new ExecutableStatement[m.getParameterTypes().length];
if (es != null) {
System.arraycopy(es, 0, executableStatements, 0, es.length);
}
executableStatements[executableStatements.length - 1] = new ExecutableLiteral(Array.newInstance(aClass, 0));
es = executableStatements;
}
}
for (int i = 0; es != null && i < es.length; i++) {
if (es[i] instanceof ExecutableLiteral) {
ExecutableLiteral literal = (ExecutableLiteral) es[i];
if (literal.getLiteral() == null) {
assert debug("ICONST_NULL");
mv.visitInsn(ACONST_NULL);
continue;
} else if (parameterTypes[i] == int.class && literal.intOptimized()) {
intPush(literal.getInteger32());
continue;
} else if (parameterTypes[i] == int.class && preConvArgs[i] instanceof Integer) {
intPush((Integer) preConvArgs[i]);
continue;
} else if (parameterTypes[i] == boolean.class) {
boolean bool = DataConversion.convert(literal.getLiteral(), Boolean.class);
assert debug(bool ? "ICONST_1" : "ICONST_0");
mv.visitInsn(bool ? ICONST_1 : ICONST_0);
continue;
} else {
Object lit = literal.getLiteral();
if (parameterTypes[i] == Object.class) {
if (isPrimitiveWrapper(lit.getClass())) {
if (lit.getClass() == Integer.class) {
intPush((Integer) lit);
} else {
assert debug("LDC " + lit);
mv.visitLdcInsn(lit);
}
wrapPrimitive(lit.getClass());
} else if (lit instanceof String) {
mv.visitLdcInsn(lit);
checkcast(Object.class);
}
continue;
} else if (canConvert(parameterTypes[i], lit.getClass())) {
Object c = convert(lit, parameterTypes[i]);
if (c instanceof Class) {
ldcClassConstant((Class) c);
} else {
assert debug("LDC " + lit + " (" + lit.getClass().getName() + ")");
mv.visitLdcInsn(convert(lit, parameterTypes[i]));
if (isPrimitiveWrapper(parameterTypes[i])) {
wrapPrimitive(lit.getClass());
}
}
continue;
} else {
throw new OptimizationNotSupported();
}
}
}
assert debug("ALOAD 0");
mv.visitVarInsn(ALOAD, 0);
assert debug("GETFIELD p" + inputsOffset);
mv.visitFieldInsn(GETFIELD, className, "p" + inputsOffset, "L" + NAMESPACE + "compiler/ExecutableStatement;");
inputsOffset++;
assert debug("ALOAD 2");
mv.visitVarInsn(ALOAD, 2);
assert debug("ALOAD 3");
mv.visitVarInsn(ALOAD, 3);
assert debug("INVOKEINTERFACE ExecutableStatement.getValue");
mv.visitMethodInsn(INVOKEINTERFACE, getInternalName(ExecutableStatement.class), "getValue", "(Ljava/lang/Object;L" + NAMESPACE + "integration/VariableResolverFactory;)Ljava/lang/Object;");
if (parameterTypes[i].isPrimitive()) {
if (preConvArgs[i] == null || (parameterTypes[i] != String.class && !parameterTypes[i].isAssignableFrom(preConvArgs[i].getClass()))) {
ldcClassConstant(getWrapperClass(parameterTypes[i]));
assert debug("INVOKESTATIC DataConversion.convert");
mv.visitMethodInsn(INVOKESTATIC, NAMESPACE + "DataConversion", "convert", "(Ljava/lang/Object;Ljava/lang/Class;)Ljava/lang/Object;");
}
unwrapPrimitive(parameterTypes[i]);
} else if (preConvArgs[i] == null || (parameterTypes[i] != String.class && !parameterTypes[i].isAssignableFrom(preConvArgs[i].getClass()))) {
ldcClassConstant(parameterTypes[i]);
assert debug("INVOKESTATIC DataConversion.convert");
mv.visitMethodInsn(INVOKESTATIC, NAMESPACE + "DataConversion", "convert", "(Ljava/lang/Object;Ljava/lang/Class;)Ljava/lang/Object;");
assert debug("CHECKCAST " + getInternalName(parameterTypes[i]));
mv.visitTypeInsn(CHECKCAST, getInternalName(parameterTypes[i]));
} else if (parameterTypes[i] == String.class) {
assert debug("<<<DYNAMIC TYPE OPTIMIZATION STRING>>");
mv.visitMethodInsn(INVOKESTATIC, "java/lang/String", "valueOf", "(Ljava/lang/Object;)Ljava/lang/String;");
} else {
assert debug("<<<DYNAMIC TYPING BYPASS>>>");
assert debug("<<<OPT. JUSTIFICATION " + parameterTypes[i] + "=" + preConvArgs[i].getClass() + ">>>");
assert debug("CHECKCAST " + getInternalName(parameterTypes[i]));
mv.visitTypeInsn(CHECKCAST, getInternalName(parameterTypes[i]));
}
}
if ((m.getModifiers() & STATIC) != 0) {
assert debug("INVOKESTATIC: " + m.getName());
mv.visitMethodInsn(INVOKESTATIC, getInternalName(m.getDeclaringClass()), m.getName(), getMethodDescriptor(m));
} else {
if (m.getDeclaringClass().isInterface() && (m.getDeclaringClass() != cls || (ctx != null && ctx.getClass() != m.getDeclaringClass()))) {
assert debug("INVOKEINTERFACE: " + getInternalName(m.getDeclaringClass()) + "." + m.getName());
mv.visitMethodInsn(INVOKEINTERFACE, getInternalName(m.getDeclaringClass()), m.getName(), getMethodDescriptor(m));
} else {
assert debug("INVOKEVIRTUAL: " + getInternalName(cls) + "." + m.getName());
mv.visitMethodInsn(INVOKEVIRTUAL, getInternalName(cls), m.getName(), getMethodDescriptor(m));
}
}
returnType = m.getReturnType();
stacksize++;
}
Object o = m.invoke(ctx, normalizeArgsForVarArgs(parameterTypes, args, m.isVarArgs()));
if (hasNullMethodHandler()) {
writeOutNullHandler(m, 1);
if (o == null)
o = getNullMethodHandler().getProperty(m.getName(), ctx, variableFactory);
}
currType = toNonPrimitiveType(m.getReturnType());
return o;
}
}
use of org.mvel2.OptimizationFailure in project mvel by mvel.
the class ASMAccessorOptimizer method optimizeObjectCreation.
public Accessor optimizeObjectCreation(ParserContext pCtx, char[] property, int start, int offset, Object ctx, Object thisRef, VariableResolverFactory factory) {
_initJIT();
compiledInputs = new ArrayList<ExecutableStatement>();
this.start = cursor = start;
this.end = start + offset;
this.length = this.end - this.start;
this.ctx = ctx;
this.thisRef = thisRef;
this.variableFactory = factory;
this.pCtx = pCtx;
String[] cnsRes = captureContructorAndResidual(property, start, offset);
List<char[]> constructorParms = parseMethodOrConstructor(cnsRes[0].toCharArray());
try {
if (constructorParms != null) {
for (char[] constructorParm : constructorParms) {
compiledInputs.add((ExecutableStatement) subCompileExpression(constructorParm, pCtx));
}
Class cls = findClass(factory, new String(subset(property, 0, findFirst('(', start, length, property))), pCtx);
assert debug("NEW " + getInternalName(cls));
mv.visitTypeInsn(NEW, getInternalName(cls));
assert debug("DUP");
mv.visitInsn(DUP);
Object[] parms = new Object[constructorParms.size()];
int i = 0;
for (ExecutableStatement es : compiledInputs) {
parms[i++] = es.getValue(ctx, factory);
}
Constructor cns = getBestConstructorCandidate(parms, cls, pCtx.isStrongTyping());
if (cns == null) {
StringBuilder error = new StringBuilder();
for (int x = 0; x < parms.length; x++) {
error.append(parms[x].getClass().getName());
if (x + 1 < parms.length)
error.append(", ");
}
throw new CompileException("unable to find constructor: " + cls.getName() + "(" + error.toString() + ")", expr, st);
}
this.returnType = cns.getDeclaringClass();
Class tg;
for (i = 0; i < constructorParms.size(); i++) {
assert debug("ALOAD 0");
mv.visitVarInsn(ALOAD, 0);
assert debug("GETFIELD p" + i);
mv.visitFieldInsn(GETFIELD, className, "p" + i, "L" + NAMESPACE + "compiler/ExecutableStatement;");
assert debug("ALOAD 2");
mv.visitVarInsn(ALOAD, 2);
assert debug("ALOAD 3");
mv.visitVarInsn(ALOAD, 3);
assert debug("INVOKEINTERFACE " + NAMESPACE + "compiler/ExecutableStatement.getValue");
mv.visitMethodInsn(INVOKEINTERFACE, "" + NAMESPACE + "compiler/ExecutableStatement", "getValue", "(Ljava/lang/Object;L" + NAMESPACE + "integration/VariableResolverFactory;)Ljava/lang/Object;");
tg = cns.getParameterTypes()[i].isPrimitive() ? getWrapperClass(cns.getParameterTypes()[i]) : cns.getParameterTypes()[i];
if (parms[i] != null && !parms[i].getClass().isAssignableFrom(cns.getParameterTypes()[i])) {
ldcClassConstant(tg);
assert debug("INVOKESTATIC " + NAMESPACE + "DataConversion.convert");
mv.visitMethodInsn(INVOKESTATIC, "" + NAMESPACE + "DataConversion", "convert", "(Ljava/lang/Object;Ljava/lang/Class;)Ljava/lang/Object;");
if (cns.getParameterTypes()[i].isPrimitive()) {
unwrapPrimitive(cns.getParameterTypes()[i]);
} else {
assert debug("CHECKCAST " + getInternalName(tg));
mv.visitTypeInsn(CHECKCAST, getInternalName(tg));
}
} else {
assert debug("CHECKCAST " + getInternalName(cns.getParameterTypes()[i]));
mv.visitTypeInsn(CHECKCAST, getInternalName(cns.getParameterTypes()[i]));
}
}
assert debug("INVOKESPECIAL " + getInternalName(cls) + ".<init> : " + getConstructorDescriptor(cns));
mv.visitMethodInsn(INVOKESPECIAL, getInternalName(cls), "<init>", getConstructorDescriptor(cns));
_finishJIT();
Accessor acc = _initializeAccessor();
if (cnsRes.length > 1 && cnsRes[1] != null && !cnsRes[1].trim().equals("")) {
return new Union(pCtx, acc, cnsRes[1].toCharArray(), 0, cnsRes[1].length());
}
return acc;
} else {
Class cls = findClass(factory, new String(property), pCtx);
assert debug("NEW " + getInternalName(cls));
mv.visitTypeInsn(NEW, getInternalName(cls));
assert debug("DUP");
mv.visitInsn(DUP);
Constructor cns = cls.getConstructor(EMPTYCLS);
assert debug("INVOKESPECIAL <init>");
mv.visitMethodInsn(INVOKESPECIAL, getInternalName(cls), "<init>", getConstructorDescriptor(cns));
_finishJIT();
Accessor acc = _initializeAccessor();
if (cnsRes.length > 1 && cnsRes[1] != null && !cnsRes[1].trim().equals("")) {
return new Union(pCtx, acc, cnsRes[1].toCharArray(), 0, cnsRes[1].length());
}
return acc;
}
} catch (ClassNotFoundException e) {
throw new CompileException("class or class reference not found: " + new String(property), property, st);
} catch (Exception e) {
throw new OptimizationFailure("could not optimize construtor: " + new String(property), e);
}
}
use of org.mvel2.OptimizationFailure in project mvel by mvel.
the class ASMAccessorOptimizer method optimizeCollection.
public Accessor optimizeCollection(ParserContext pCtx, Object o, Class type, char[] property, int start, int offset, Object ctx, Object thisRef, VariableResolverFactory factory) {
this.expr = property;
this.cursor = this.start = start;
this.end = start + offset;
this.length = offset;
type = toNonPrimitiveArray(type);
this.returnType = type;
this.compiledInputs = new ArrayList<ExecutableStatement>();
this.ctx = ctx;
this.thisRef = thisRef;
this.variableFactory = factory;
this.pCtx = pCtx;
_initJIT();
literal = true;
_getAccessor(o, type);
_finishJIT();
try {
Accessor compiledAccessor = _initializeAccessor();
if (property != null && length > start) {
return new Union(pCtx, compiledAccessor, property, start, length);
} else {
return compiledAccessor;
}
} catch (Exception e) {
throw new OptimizationFailure("could not optimize collection", e);
}
}
use of org.mvel2.OptimizationFailure in project mvel by mvel.
the class ReflectiveAccessorOptimizer method getMethod.
@SuppressWarnings({ "unchecked" })
private Object getMethod(Object ctx, String name, Object[] args, Class[] argTypes, ExecutableStatement[] es) throws Exception {
if (first && variableFactory != null && variableFactory.isResolveable(name)) {
Object ptr = variableFactory.getVariableResolver(name).getValue();
if (ptr instanceof Method) {
ctx = ((Method) ptr).getDeclaringClass();
name = ((Method) ptr).getName();
} else if (ptr instanceof MethodStub) {
ctx = ((MethodStub) ptr).getClassReference();
name = ((MethodStub) ptr).getMethodName();
} else if (ptr instanceof FunctionInstance) {
FunctionInstance func = (FunctionInstance) ptr;
if (!name.equals(func.getFunction().getName())) {
getBeanProperty(ctx, name);
addAccessorNode(new DynamicFunctionAccessor(es));
} else {
addAccessorNode(new FunctionAccessor(func, es));
}
return func.call(ctx, thisRef, variableFactory, args);
} else {
throw new OptimizationFailure("attempt to optimize a method call for a reference that does not point to a method: " + name + " (reference is type: " + (ctx != null ? ctx.getClass().getName() : null) + ")");
}
first = false;
}
if (ctx == null && currType == null) {
throw new PropertyAccessException("null pointer or function not found: " + name, this.expr, this.start, pCtx);
}
boolean classTarget = false;
Class<?> cls = currType != null ? currType : ((classTarget = ctx instanceof Class) ? (Class<?>) ctx : ctx.getClass());
currType = null;
Method m;
Class[] parameterTypes = null;
/**
* Try to find an instance method from the class target.
*/
if ((m = getBestCandidate(argTypes, name, cls, cls.getMethods(), false, classTarget)) != null) {
parameterTypes = m.getParameterTypes();
}
if (m == null && classTarget) {
/**
* If we didn't find anything, maybe we're looking for the actual java.lang.Class methods.
*/
if ((m = getBestCandidate(argTypes, name, cls, Class.class.getMethods(), false)) != null) {
parameterTypes = m.getParameterTypes();
}
}
// If we didn't find anything and the declared class is different from the actual one try also with the actual one
if (m == null && ctx != null && cls != ctx.getClass() && !(ctx instanceof Class)) {
cls = ctx.getClass();
if ((m = getBestCandidate(argTypes, name, cls, cls.getMethods(), false, classTarget)) != null) {
parameterTypes = m.getParameterTypes();
}
}
if (m == null) {
StringAppender errorBuild = new StringAppender();
if ("size".equals(name) && args.length == 0 && cls.isArray()) {
addAccessorNode(new ArrayLength());
return getLength(ctx);
}
// if it is not already using this as context try to access the method this
if (ctx != this.thisRef && this.thisRef != null) {
addAccessorNode(new ThisValueAccessor());
return getMethod(this.thisRef, name, args, argTypes, es);
}
for (int i = 0; i < args.length; i++) {
errorBuild.append(args[i] != null ? args[i].getClass().getName() : null);
if (i < args.length - 1)
errorBuild.append(", ");
}
throw new PropertyAccessException("unable to resolve method: " + cls.getName() + "." + name + "(" + errorBuild.toString() + ") [arglength=" + args.length + "]", this.expr, this.st, pCtx);
}
if (es != null) {
ExecutableStatement cExpr;
for (int i = 0; i < es.length; i++) {
cExpr = es[i];
if (cExpr.getKnownIngressType() == null) {
cExpr.setKnownIngressType(paramTypeVarArgsSafe(parameterTypes, i, m.isVarArgs()));
cExpr.computeTypeConversionRule();
}
if (!cExpr.isConvertableIngressEgress()) {
args[i] = convert(args[i], paramTypeVarArgsSafe(parameterTypes, i, m.isVarArgs()));
}
}
} else {
/**
* Coerce any types if required.
*/
for (int i = 0; i < args.length; i++) args[i] = convert(args[i], paramTypeVarArgsSafe(parameterTypes, i, m.isVarArgs()));
}
Method method = getWidenedTarget(cls, m);
Object o = ctx != null ? method.invoke(ctx, normalizeArgsForVarArgs(parameterTypes, args, m.isVarArgs())) : null;
if (hasNullMethodHandler()) {
addAccessorNode(new MethodAccessorNH(method, (ExecutableStatement[]) es, getNullMethodHandler()));
if (o == null)
o = getNullMethodHandler().getProperty(m.getName(), ctx, variableFactory);
} else {
addAccessorNode(new MethodAccessor(method, (ExecutableStatement[]) es));
}
/**
* return the response.
*/
currType = toNonPrimitiveType(method.getReturnType());
return o;
}
use of org.mvel2.OptimizationFailure in project mvel by mikebrock.
the class PropertyAccessor method getMethod.
/**
* Find an appropriate method, execute it, and return it's response.
*
* @param ctx -
* @param name -
* @return -
* @throws Exception -
*/
@SuppressWarnings({ "unchecked" })
private Object getMethod(Object ctx, String name) {
int _start = cursor;
String tk = cursor != end && property[cursor] == '(' && ((cursor = balancedCapture(property, cursor, '(')) - _start) > 1 ? new String(property, _start + 1, cursor - _start - 1) : "";
cursor++;
Object[] args;
if (tk.length() == 0) {
args = ParseTools.EMPTY_OBJ_ARR;
} else {
List<char[]> subtokens = parseParameterList(tk.toCharArray(), 0, -1);
args = new Object[subtokens.size()];
for (int i = 0; i < subtokens.size(); i++) {
args[i] = eval(subtokens.get(i), thisReference, variableFactory);
}
}
if (first && variableFactory != null && variableFactory.isResolveable(name)) {
Object ptr = variableFactory.getVariableResolver(name).getValue();
if (ptr instanceof Method) {
ctx = ((Method) ptr).getDeclaringClass();
name = ((Method) ptr).getName();
} else if (ptr instanceof MethodStub) {
ctx = ((MethodStub) ptr).getClassReference();
name = ((MethodStub) ptr).getMethodName();
} else if (ptr instanceof Function) {
((Function) ptr).checkArgumentCount(args.length);
return ((Function) ptr).call(null, thisReference, variableFactory, args);
} else {
throw new OptimizationFailure("attempt to optimize a method call for a reference that does not point to a method: " + name + " (reference is type: " + (ctx != null ? ctx.getClass().getName() : null) + ")");
}
first = false;
}
if (ctx == null)
throw new CompileException("no such method or function: " + name, property, cursor);
/**
* If the target object is an instance of java.lang.Class itself then do not
* adjust the Class scope target.
*/
Class cls = (ctx instanceof Class ? (Class) ctx : ctx.getClass());
if (cls == Proto.ProtoInstance.class) {
return ((Proto.ProtoInstance) ctx).get(name).call(null, thisReference, variableFactory, args);
}
/**
* Check to see if we have already cached this method;
*/
Object[] cache = checkMethodCache(cls, createSignature(name, tk));
Method m;
Class[] parameterTypes;
if (cache != null) {
m = (Method) cache[0];
parameterTypes = (Class[]) cache[1];
} else {
m = null;
parameterTypes = null;
}
/**
* If we have not cached the method then we need to go ahead and try to resolve it.
*/
if (m == null) {
/**
* Try to find an instance method from the class target.
*/
if ((m = getBestCandidate(args, name, cls, cls.getMethods(), false)) != null) {
addMethodCache(cls, createSignature(name, tk), m);
parameterTypes = m.getParameterTypes();
}
if (m == null) {
/**
* If we didn't find anything, maybe we're looking for the actual java.lang.Class methods.
*/
if ((m = getBestCandidate(args, name, cls, cls.getClass().getDeclaredMethods(), false)) != null) {
addMethodCache(cls, createSignature(name, tk), m);
parameterTypes = m.getParameterTypes();
}
}
}
if (m == null) {
StringAppender errorBuild = new StringAppender();
for (int i = 0; i < args.length; i++) {
errorBuild.append(args[i] != null ? args[i].getClass().getName() : null);
if (i < args.length - 1)
errorBuild.append(", ");
}
if ("size".equals(name) && args.length == 0 && cls.isArray()) {
return getLength(ctx);
}
System.out.println("{ " + new String(property) + " }");
throw new PropertyAccessException("unable to resolve method: " + cls.getName() + "." + name + "(" + errorBuild.toString() + ") [arglength=" + args.length + "]", property, st);
} else {
for (int i = 0; i < args.length; i++) {
args[i] = convert(args[i], parameterTypes[i]);
}
/**
* Invoke the target method and return the response.
*/
try {
return m.invoke(ctx, args);
} catch (IllegalAccessException e) {
try {
addMethodCache(cls, createSignature(name, tk), (m = getWidenedTarget(m)));
return m.invoke(ctx, args);
} catch (Exception e2) {
throw new PropertyAccessException("unable to invoke method: " + name, property, cursor, e2);
}
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new PropertyAccessException("unable to invoke method: " + name, property, cursor, e);
}
}
}
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