use of org.mvel2.optimizers.impl.refl.nodes.MethodAccessor in project drools by kiegroup.
the class MVELConditionEvaluator method isEvaluated.
private static boolean isEvaluated(ASTNode node) {
node = unwrapSubstatement(node);
if (node == null) {
return true;
}
if (node instanceof Contains) {
return ((Contains) node).getFirstStatement().getAccessor() != null;
}
if (node instanceof BooleanNode) {
return isEvaluated(((BooleanNode) node).getLeft()) && isEvaluated(((BooleanNode) node).getRight());
}
Accessor accessor = node.getAccessor();
if (accessor == null) {
return node instanceof LiteralNode;
}
if (accessor instanceof AccessorNode) {
AccessorNode nextNode = ((AccessorNode) accessor).getNextNode();
if (nextNode instanceof MethodAccessor && ((MethodAccessor) nextNode).getParms() != null) {
for (ExecutableStatement param : ((MethodAccessor) nextNode).getParms()) {
if (!isFullyEvaluated(param)) {
return false;
}
}
}
}
return true;
}
use of org.mvel2.optimizers.impl.refl.nodes.MethodAccessor in project drools by kiegroup.
the class ConditionAnalyzer method analyzeAccessorInvocation.
private Invocation analyzeAccessorInvocation(AccessorNode accessorNode, ASTNode containingNode, Invocation formerInvocation, Class<?> variableType) {
if (accessorNode instanceof GetterAccessor) {
return new MethodInvocation(((GetterAccessor) accessorNode).getMethod(), variableType == null ? conditionClass : variableType.getName());
}
if (accessorNode instanceof MethodAccessor) {
MethodAccessor methodAccessor = (MethodAccessor) accessorNode;
Method method = methodAccessor.getMethod();
MethodInvocation invocation = new MethodInvocation(method);
boolean isVarArgs = method.isVarArgs();
readInvocationParams(invocation, methodAccessor.getParms(), methodAccessor.getParameterTypes(), isVarArgs);
return invocation;
}
if (accessorNode instanceof ConstructorAccessor) {
ConstructorAccessor constructorAccessor = (ConstructorAccessor) accessorNode;
Constructor constructor = constructorAccessor.getConstructor();
ConstructorInvocation invocation = new ConstructorInvocation(constructor);
readInvocationParams(invocation, constructorAccessor.getParameters(), constructorAccessor.getParameterTypes(), constructor.isVarArgs());
return invocation;
}
if (accessorNode instanceof ArrayAccessor) {
ArrayAccessor arrayAccessor = (ArrayAccessor) accessorNode;
return new ArrayAccessInvocation(formerInvocation != null ? formerInvocation.getReturnType() : Object[].class, new FixedExpression(int.class, arrayAccessor.getIndex()));
}
if (accessorNode instanceof ArrayAccessorNest) {
ArrayAccessorNest arrayAccessorNest = (ArrayAccessorNest) accessorNode;
ExecutableAccessor index = (ExecutableAccessor) arrayAccessorNest.getIndex();
return new ArrayAccessInvocation(formerInvocation != null ? formerInvocation.getReturnType() : Object[].class, analyzeNode(index.getNode()));
}
if (accessorNode instanceof ArrayLength) {
return new ArrayLengthInvocation();
}
if (accessorNode instanceof ListAccessor) {
Class<?> listType = getListType(formerInvocation);
ListAccessor listAccessor = (ListAccessor) accessorNode;
return new ListAccessInvocation(listType, new FixedExpression(int.class, listAccessor.getIndex()));
}
if (accessorNode instanceof ListAccessorNest) {
Class<?> listType = getListType(formerInvocation);
ListAccessorNest listAccessorNest = (ListAccessorNest) accessorNode;
ExecutableAccessor index = (ExecutableAccessor) listAccessorNest.getIndex();
return new ListAccessInvocation(listType, analyzeNode(index.getNode()));
}
if (accessorNode instanceof MapAccessor) {
MapAccessor mapAccessor = (MapAccessor) accessorNode;
return new MapAccessInvocation(Object.class, Object.class, new FixedExpression(Object.class, mapAccessor.getProperty()));
}
if (accessorNode instanceof MapAccessorNest) {
Class<?> keyType = Object.class;
Class<?> valueType = Object.class;
Type[] generics = getGenerics(formerInvocation);
if (generics != null && generics.length == 2 && generics[0] instanceof Class) {
keyType = (Class<?>) generics[0];
if (generics[1] instanceof Class)
valueType = (Class<?>) generics[1];
}
MapAccessorNest mapAccessor = (MapAccessorNest) accessorNode;
ExecutableStatement statement = mapAccessor.getProperty();
if (statement instanceof ExecutableLiteral) {
return new MapAccessInvocation(keyType, valueType, new FixedExpression(keyType, ((ExecutableLiteral) statement).getLiteral()));
} else {
return new MapAccessInvocation(keyType, valueType, analyzeNode(((ExecutableAccessor) statement).getNode()));
}
}
if (accessorNode instanceof FieldAccessor) {
return new FieldAccessInvocation(((FieldAccessor) accessorNode).getField());
}
if (accessorNode instanceof StaticVarAccessor) {
Field field = ((StaticVarAccessor) accessorNode).getField();
return new FieldAccessInvocation(field);
}
if (accessorNode instanceof ThisValueAccessor) {
return new ThisInvocation(accessorNode.getNextNode() == null ? containingNode.getEgressType() : Object.class);
}
throw new RuntimeException("Unknown AccessorNode type: " + accessorNode.getClass().getName());
}
use of org.mvel2.optimizers.impl.refl.nodes.MethodAccessor in project drools by kiegroup.
the class ModifyInterceptor method extractMethod.
private Method extractMethod(WithNode.ParmValuePair parmValuePair) {
Serializable setExpression = parmValuePair.getSetExpression();
if (setExpression != null) {
SetterAccessor setterAccessor = (SetterAccessor) ((CompiledAccExpression) setExpression).getAccessor();
return setterAccessor.getMethod();
} else {
ExecutableAccessor accessor = (ExecutableAccessor) parmValuePair.getStatement();
AccessorNode accessorNode = (AccessorNode) accessor.getNode().getAccessor();
MethodAccessor methodAccessor = (MethodAccessor) accessorNode.getNextNode();
return methodAccessor.getMethod();
}
}
use of org.mvel2.optimizers.impl.refl.nodes.MethodAccessor in project mvel by mikebrock.
the class ReflectiveAccessorOptimizer 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) throws Exception {
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[] args;
Class[] argTypes;
ExecutableStatement[] es;
if (tk.length() == 0) {
args = ParseTools.EMPTY_OBJ_ARR;
argTypes = ParseTools.EMPTY_CLS_ARR;
es = null;
} else {
List<char[]> subtokens = parseParameterList(tk.toCharArray(), 0, -1);
es = new ExecutableStatement[subtokens.size()];
args = new Object[subtokens.size()];
argTypes = new Class[subtokens.size()];
for (int i = 0; i < subtokens.size(); i++) {
try {
args[i] = (es[i] = (ExecutableStatement) subCompileExpression(subtokens.get(i), pCtx)).getValue(this.thisRef, thisRef, variableFactory);
} catch (CompileException e) {
throw ErrorUtil.rewriteIfNeeded(e, this.expr, this.start);
}
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 Function) {
Function func = (Function) ptr;
if (!name.equals(func.getName())) {
getBeanProperty(ctx, name);
addAccessorNode(new DynamicFunctionAccessor(es));
} else {
addAccessorNode(new FunctionAccessor((Function) ptr, es));
}
return ((Function) 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;
}
if (ctx == null) {
throw new PropertyAccessException("null pointer or function not found: " + name, this.expr, this.start);
}
boolean classTarget = false;
Class<?> cls = currType != null ? currType : ((classTarget = ctx instanceof Class) ? (Class<?>) ctx : ctx.getClass());
currType = null;
Method m;
Class[] parameterTypes = null;
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 (m == null) {
StringAppender errorBuild = new StringAppender();
if ("size".equals(name) && args.length == 0 && cls.isArray()) {
addAccessorNode(new ArrayLength());
return getLength(ctx);
}
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);
} else {
if (es != null) {
ExecutableStatement cExpr;
for (int i = 0; i < es.length; i++) {
cExpr = (ExecutableStatement) es[i];
if (cExpr.getKnownIngressType() == null) {
cExpr.setKnownIngressType(parameterTypes[i]);
cExpr.computeTypeConversionRule();
}
if (!cExpr.isConvertableIngressEgress()) {
args[i] = convert(args[i], parameterTypes[i]);
}
}
} else {
/**
* Coerce any types if required.
*/
for (int i = 0; i < args.length; i++) args[i] = convert(args[i], parameterTypes[i]);
}
Object o = getWidenedTarget(m).invoke(ctx, args);
if (hasNullMethodHandler()) {
addAccessorNode(new MethodAccessorNH(getWidenedTarget(m), (ExecutableStatement[]) es, getNullMethodHandler()));
if (o == null)
o = getNullMethodHandler().getProperty(m.getName(), ctx, variableFactory);
} else {
addAccessorNode(new MethodAccessor(getWidenedTarget(m), (ExecutableStatement[]) es));
}
/**
* return the response.
*/
return o;
}
}
use of org.mvel2.optimizers.impl.refl.nodes.MethodAccessor in project drools by kiegroup.
the class ConditionAnalyzer method analyzeAccessorInvocation.
private Invocation analyzeAccessorInvocation(AccessorNode accessorNode, ASTNode containingNode, Invocation formerInvocation, Class<?> variableType) {
if (accessorNode instanceof GetterAccessor) {
return new MethodInvocation(((GetterAccessor) accessorNode).getMethod(), variableType == null ? conditionClass : variableType.getName());
}
if (accessorNode instanceof MethodAccessor) {
MethodAccessor methodAccessor = (MethodAccessor) accessorNode;
Method method = methodAccessor.getMethod();
MethodInvocation invocation = new MethodInvocation(method);
boolean isVarArgs = method.isVarArgs();
readInvocationParams(invocation, methodAccessor.getParms(), methodAccessor.getParameterTypes(), isVarArgs);
return invocation;
}
if (accessorNode instanceof ConstructorAccessor) {
ConstructorAccessor constructorAccessor = (ConstructorAccessor) accessorNode;
Constructor constructor = constructorAccessor.getConstructor();
ConstructorInvocation invocation = new ConstructorInvocation(constructor);
readInvocationParams(invocation, constructorAccessor.getParameters(), constructorAccessor.getParameterTypes(), constructor.isVarArgs());
return invocation;
}
if (accessorNode instanceof ArrayAccessor) {
ArrayAccessor arrayAccessor = (ArrayAccessor) accessorNode;
return new ArrayAccessInvocation(formerInvocation != null ? formerInvocation.getReturnType() : Object[].class, new FixedExpression(int.class, arrayAccessor.getIndex()));
}
if (accessorNode instanceof ArrayAccessorNest) {
ArrayAccessorNest arrayAccessorNest = (ArrayAccessorNest) accessorNode;
ExecutableAccessor index = (ExecutableAccessor) arrayAccessorNest.getIndex();
return new ArrayAccessInvocation(formerInvocation != null ? formerInvocation.getReturnType() : Object[].class, analyzeNode(index.getNode()));
}
if (accessorNode instanceof ArrayLength) {
return new ArrayLengthInvocation();
}
if (accessorNode instanceof ListAccessor) {
Class<?> listType = getListType(formerInvocation);
ListAccessor listAccessor = (ListAccessor) accessorNode;
return new ListAccessInvocation(listType, new FixedExpression(int.class, listAccessor.getIndex()));
}
if (accessorNode instanceof ListAccessorNest) {
Class<?> listType = getListType(formerInvocation);
ListAccessorNest listAccessorNest = (ListAccessorNest) accessorNode;
ExecutableAccessor index = (ExecutableAccessor) listAccessorNest.getIndex();
return new ListAccessInvocation(listType, analyzeNode(index.getNode()));
}
if (accessorNode instanceof MapAccessor) {
MapAccessor mapAccessor = (MapAccessor) accessorNode;
return new MapAccessInvocation(Object.class, Object.class, new FixedExpression(Object.class, mapAccessor.getProperty()));
}
if (accessorNode instanceof MapAccessorNest) {
Class<?> keyType = Object.class;
Class<?> valueType = Object.class;
Type[] generics = getGenerics(formerInvocation);
if (generics != null && generics.length == 2 && generics[0] instanceof Class) {
keyType = (Class<?>) generics[0];
if (generics[1] instanceof Class)
valueType = (Class<?>) generics[1];
}
MapAccessorNest mapAccessor = (MapAccessorNest) accessorNode;
ExecutableStatement statement = mapAccessor.getProperty();
if (statement instanceof ExecutableLiteral) {
return new MapAccessInvocation(keyType, valueType, new FixedExpression(keyType, ((ExecutableLiteral) statement).getLiteral()));
} else {
return new MapAccessInvocation(keyType, valueType, analyzeNode(((ExecutableAccessor) statement).getNode()));
}
}
if (accessorNode instanceof FieldAccessor) {
return new FieldAccessInvocation(((FieldAccessor) accessorNode).getField());
}
if (accessorNode instanceof StaticVarAccessor) {
Field field = ((StaticVarAccessor) accessorNode).getField();
return new FieldAccessInvocation(field);
}
if (accessorNode instanceof ThisValueAccessor) {
return new ThisInvocation(accessorNode.getNextNode() == null ? containingNode.getEgressType() : Object.class);
}
throw new RuntimeException("Unknown AccessorNode type: " + accessorNode.getClass().getName());
}
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