Examples with Accessor org.mvel2.compiler.Accessor used on opensource projects

Example 11 with Accessor

use of org.mvel2.compiler.Accessor in project mvel by mikebrock.

the class ASMAccessorOptimizer method propHandlerByteCodePut.

private void propHandlerByteCodePut(String property, Object ctx, Class handler, Object value) {
    PropertyHandler ph = getPropertyHandler(handler);
    if (ph instanceof ProducesBytecode) {
        assert debug("<<3rd-Party Code Generation>>");
        ((ProducesBytecode) ph).produceBytecodePut(mv, property, variableFactory);
        ph.setProperty(property, ctx, variableFactory, value);
    } else {
        throw new RuntimeException("unable to compileShared: custom accessor does not support producing bytecode: " + ph.getClass().getName());
    }
}

Example 12 with Accessor

use of org.mvel2.compiler.Accessor in project mvel by mikebrock.

the class ReflectiveAccessorOptimizer method optimizeSetAccessor.

public Accessor optimizeSetAccessor(ParserContext pCtx, char[] property, int start, int offset, Object ctx, Object thisRef, VariableResolverFactory factory, boolean rootThisRef, Object value, Class ingressType) {
    this.rootNode = this.currNode = null;
    this.expr = property;
    this.start = start;
    this.first = true;
    this.length = start + offset;
    this.ctx = ctx;
    this.thisRef = thisRef;
    this.variableFactory = factory;
    this.ingressType = ingressType;
    char[] root = null;
    int split = findLastUnion();
    PropertyVerifier verifier = new PropertyVerifier(property, this.pCtx = pCtx);
    if (split != -1) {
        root = subset(property, 0, split++);
        //todo: must use the property verifier.
        property = subset(property, split, property.length - split);
    }
    if (root != null) {
        this.length = end = (this.expr = root).length;
        compileGetChain();
        ctx = this.val;
    }
    if (ctx == null) {
        throw new PropertyAccessException("could not access property: " + new String(property, this.start, length) + "; parent is null: " + new String(expr), expr, this.start);
    }
    try {
        this.length = end = (this.expr = property).length;
        int st;
        this.cursor = st = 0;
        skipWhitespace();
        if (collection) {
            st = cursor;
            if (cursor == end)
                throw new PropertyAccessException("unterminated '['", expr, this.start);
            if (scanTo(']'))
                throw new PropertyAccessException("unterminated '['", expr, this.start);
            String ex = new String(property, st, cursor - st);
            if (ctx instanceof Map) {
                if (MVEL.COMPILER_OPT_ALLOW_OVERRIDE_ALL_PROPHANDLING && hasPropertyHandler(Map.class)) {
                    propHandlerSet(ex, ctx, Map.class, value);
                } else {
                    //noinspection unchecked
                    ((Map) ctx).put(eval(ex, ctx, variableFactory), convert(value, returnType = verifier.analyze()));
                    addAccessorNode(new MapAccessorNest(ex, returnType));
                }
                return rootNode;
            } else if (ctx instanceof List) {
                if (MVEL.COMPILER_OPT_ALLOW_OVERRIDE_ALL_PROPHANDLING && hasPropertyHandler(List.class)) {
                    propHandlerSet(ex, ctx, List.class, value);
                } else {
                    //noinspection unchecked
                    ((List) ctx).set(eval(ex, ctx, variableFactory, Integer.class), convert(value, returnType = verifier.analyze()));
                    addAccessorNode(new ListAccessorNest(ex, returnType));
                }
                return rootNode;
            } else if (MVEL.COMPILER_OPT_ALLOW_OVERRIDE_ALL_PROPHANDLING && hasPropertyHandler(ctx.getClass())) {
                propHandlerSet(ex, ctx, ctx.getClass(), value);
                return rootNode;
            } else if (ctx.getClass().isArray()) {
                if (MVEL.COMPILER_OPT_ALLOW_OVERRIDE_ALL_PROPHANDLING && hasPropertyHandler(Array.class)) {
                    propHandlerSet(ex, ctx, Array.class, value);
                } else {
                    //noinspection unchecked
                    Array.set(ctx, eval(ex, ctx, variableFactory, Integer.class), convert(value, getBaseComponentType(ctx.getClass())));
                    addAccessorNode(new ArrayAccessorNest(ex));
                }
                return rootNode;
            } else {
                throw new PropertyAccessException("cannot bind to collection property: " + new String(property) + ": not a recognized collection type: " + ctx.getClass(), expr, this.st);
            }
        } else if (MVEL.COMPILER_OPT_ALLOW_OVERRIDE_ALL_PROPHANDLING && hasPropertyHandler(ctx.getClass())) {
            propHandlerSet(new String(property), ctx, ctx.getClass(), value);
            return rootNode;
        }
        String tk = new String(property, 0, length);
        if (hasSetListeners()) {
            notifySetListeners(ctx, tk, variableFactory, value);
            addAccessorNode(new Notify(tk));
        }
        Member member = getFieldOrWriteAccessor(ctx.getClass(), tk, value == null ? null : ingressType);
        if (member instanceof Field) {
            Field fld = (Field) member;
            if (value != null && !fld.getType().isAssignableFrom(value.getClass())) {
                if (!canConvert(fld.getType(), value.getClass())) {
                    throw new CompileException("cannot convert type: " + value.getClass() + ": to " + fld.getType(), this.expr, this.start);
                }
                fld.set(ctx, convert(value, fld.getType()));
                addAccessorNode(new DynamicFieldAccessor(fld));
            } else if (value == null && fld.getType().isPrimitive()) {
                fld.set(ctx, PropertyTools.getPrimitiveInitialValue(fld.getType()));
                addAccessorNode(new FieldAccessor(fld));
            } else {
                fld.set(ctx, value);
                addAccessorNode(new FieldAccessor(fld));
            }
        } else if (member != null) {
            Method meth = (Method) member;
            if (value != null && !meth.getParameterTypes()[0].isAssignableFrom(value.getClass())) {
                if (!canConvert(meth.getParameterTypes()[0], value.getClass())) {
                    throw new CompileException("cannot convert type: " + value.getClass() + ": to " + meth.getParameterTypes()[0], this.expr, this.start);
                }
                meth.invoke(ctx, convert(value, meth.getParameterTypes()[0]));
            } else if (value == null && meth.getParameterTypes()[0].isPrimitive()) {
                meth.invoke(ctx, PropertyTools.getPrimitiveInitialValue(meth.getParameterTypes()[0]));
            } else {
                meth.invoke(ctx, value);
            }
            addAccessorNode(new SetterAccessor(meth));
        } else if (ctx instanceof Map) {
            //noinspection unchecked
            ((Map) ctx).put(tk, value);
            addAccessorNode(new MapAccessor(tk));
        } else {
            throw new PropertyAccessException("could not access property (" + tk + ") in: " + ingressType.getName(), this.expr, this.start);
        }
    } catch (InvocationTargetException e) {
        throw new PropertyAccessException("could not access property: " + new String(property), this.expr, st, e);
    } catch (IllegalAccessException e) {
        throw new PropertyAccessException("could not access property: " + new String(property), this.expr, st, e);
    } catch (IllegalArgumentException e) {
        throw new PropertyAccessException("error binding property: " + new String(property) + " (value <<" + value + ">>::" + (value == null ? "null" : value.getClass().getCanonicalName()) + ")", this.expr, st, e);
    }
    return rootNode;
}

Example 13 with Accessor

use of org.mvel2.compiler.Accessor in project mvel by mikebrock.

the class AbstractOptimizer method tryStaticAccess.

/**
   * Try static access of the property, and return an instance of the Field, Method of Class if successful.
   *
   * @return - Field, Method or Class instance.
   */
protected Object tryStaticAccess() {
    int begin = cursor;
    try {
        /**
       * Try to resolve this *smartly* as a static class reference.
       *
       * This starts at the end of the token and starts to step backwards to figure out whether
       * or not this may be a static class reference.  We search for method calls simply by
       * inspecting for ()'s.  The first union area we come to where no brackets are present is our
       * test-point for a class reference.  If we find a class, we pass the reference to the
       * property accessor along  with trailing methods (if any).
       *
       */
        boolean meth = false;
        // int end = start + length;
        int last = end;
        for (int i = end - 1; i > start; i--) {
            switch(expr[i]) {
                case '.':
                    if (!meth) {
                        try {
                            String test = new String(expr, start, (cursor = last) - start);
                            return Class.forName(test, true, pCtx != null ? pCtx.getParserConfiguration().getClassLoader() : currentThread().getContextClassLoader());
                        } catch (ClassNotFoundException e) {
                            Class cls = Class.forName(new String(expr, start, i - start), true, pCtx != null ? pCtx.getParserConfiguration().getClassLoader() : currentThread().getContextClassLoader());
                            String name = new String(expr, i + 1, end - i - 1);
                            try {
                                return cls.getField(name);
                            } catch (NoSuchFieldException nfe) {
                                for (Method m : cls.getMethods()) {
                                    if (name.equals(m.getName()))
                                        return m;
                                }
                                return null;
                            }
                        }
                    }
                    meth = false;
                    last = i;
                    break;
                case '}':
                    i--;
                    for (int d = 1; i > start && d != 0; i--) {
                        switch(expr[i]) {
                            case '}':
                                d++;
                                break;
                            case '{':
                                d--;
                                break;
                            case '"':
                            case '\'':
                                char s = expr[i];
                                while (i > start && (expr[i] != s && expr[i - 1] != '\\')) i--;
                        }
                    }
                    break;
                case ')':
                    i--;
                    for (int d = 1; i > start && d != 0; i--) {
                        switch(expr[i]) {
                            case ')':
                                d++;
                                break;
                            case '(':
                                d--;
                                break;
                            case '"':
                            case '\'':
                                char s = expr[i];
                                while (i > start && (expr[i] != s && expr[i - 1] != '\\')) i--;
                        }
                    }
                    meth = true;
                    last = i++;
                    break;
                case '\'':
                    while (--i > start) {
                        if (expr[i] == '\'' && expr[i - 1] != '\\') {
                            break;
                        }
                    }
                    break;
                case '"':
                    while (--i > start) {
                        if (expr[i] == '"' && expr[i - 1] != '\\') {
                            break;
                        }
                    }
                    break;
            }
        }
    } catch (Exception cnfe) {
        cursor = begin;
    }
    return null;
}

Example 14 with Accessor

use of org.mvel2.compiler.Accessor in project mvel by mikebrock.

the class OptimizerFactory method setDefaultOptimizer.

public static void setDefaultOptimizer(String name) {
    try {
        //noinspection unchecked
        AccessorOptimizer ao = accessorCompilers.get(defaultOptimizer = name);
        ao.init();
        setThreadAccessorOptimizer(ao.getClass());
    } catch (Exception e) {
        throw new RuntimeException("unable to instantiate accessor compiler", e);
    }
}

Example 15 with Accessor

use of org.mvel2.compiler.Accessor in project mvel by mikebrock.

the class ASTNode method optimize.

private Object optimize(Object ctx, Object thisValue, VariableResolverFactory factory) {
    if ((fields & DEOP) != 0) {
        fields ^= DEOP;
    }
    AccessorOptimizer optimizer;
    Object retVal = null;
    if ((fields & NOJIT) != 0 || factory != null && factory.isResolveable(nameCache)) {
        optimizer = getAccessorCompiler(SAFE_REFLECTIVE);
    } else {
        optimizer = getDefaultAccessorCompiler();
    }
    ParserContext pCtx;
    if ((fields & PCTX_STORED) != 0) {
        pCtx = (ParserContext) literal;
    } else {
        pCtx = new ParserContext(new ParserConfiguration(getInjectedImports(factory), null));
    }
    try {
        pCtx.optimizationNotify();
        setAccessor(optimizer.optimizeAccessor(pCtx, expr, start, offset, ctx, thisValue, factory, true, egressType));
    } catch (OptimizationNotSupported ne) {
        setAccessor((optimizer = getAccessorCompiler(SAFE_REFLECTIVE)).optimizeAccessor(pCtx, expr, start, offset, ctx, thisValue, factory, true, null));
    }
    if (accessor == null) {
        return get(expr, start, offset, ctx, factory, thisValue);
    }
    if (retVal == null) {
        retVal = optimizer.getResultOptPass();
    }
    if (egressType == null) {
        egressType = optimizer.getEgressType();
    }
    return retVal;
}