Examples with ParserContext org.mvel2.ParserContext used on opensource projects

Example 56 with ParserContext

use of org.mvel2.ParserContext in project mvel by mikebrock.

the class WithTests method testWithAndEnumInPackageImport.

public void testWithAndEnumInPackageImport() {
    ParserConfiguration pconf = new ParserConfiguration();
    pconf.addPackageImport(MyEnum.class.getPackage().getName());
    ParserContext pCtx = new ParserContext(pconf);
    pCtx.setStrongTyping(true);
    pCtx.addInput("thing", Thing.class);
    Thing thing = new Thing("xxx");
    Map<String, Object> vars = new HashMap<String, Object>();
    vars.put("thing", thing);
    ExecutableStatement stmt = (ExecutableStatement) MVEL.compileExpression("with( thing ) { myEnum = MyEnum.FULL_DOCUMENTATION }", pCtx);
    MVEL.executeExpression(stmt, null, vars);
    assertEquals(MyEnum.FULL_DOCUMENTATION, thing.getMyEnum());
}

Example 57 with ParserContext

use of org.mvel2.ParserContext in project mvel by mikebrock.

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;
    this.returnType = type;
    this.compiledInputs = new ArrayList<ExecutableStatement>();
    this.ctx = ctx;
    this.thisRef = thisRef;
    this.variableFactory = factory;
    _initJIT();
    literal = true;
    _getAccessor(o, type);
    _finishJIT();
    try {
        Accessor compiledAccessor = _initializeAccessor();
        if (property != null && length > start) {
            return new Union(compiledAccessor, property, start, length);
        } else {
            return compiledAccessor;
        }
    } catch (Exception e) {
        throw new OptimizationFailure("could not optimize collection", e);
    }
}

Example 58 with ParserContext

use of org.mvel2.ParserContext in project mvel by mikebrock.

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(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(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);
    }
}

Example 59 with ParserContext

use of org.mvel2.ParserContext in project mvel by mikebrock.

the class ArraysTests method testArrayLength.

public void testArrayLength() {
    ParserContext context = new ParserContext();
    context.setStrongTyping(true);
    context.addInput("x", String[].class);
    ExecutableStatement stmt = (ExecutableStatement) MVEL.compileExpression("x.length", context);
}

Example 60 with ParserContext

use of org.mvel2.ParserContext in project mvel by mikebrock.

the class ArraysTests method testArrayCoercion1.

public void testArrayCoercion1() {
    ParserContext ctx = new ParserContext();
    ctx.setStrongTyping(true);
    ctx.addInput("bar", Bar.class);
    Serializable s = compileSetExpression("bar.intarray[0]", ctx);
    Foo foo = new Foo();
    executeSetExpression(s, foo, "12");
    assertEquals(12, foo.getBar().getIntarray()[0].intValue());
    foo = new Foo();
    executeSetExpression(s, foo, "13");
    assertEquals(13, foo.getBar().getIntarray()[0].intValue());
    OptimizerFactory.setDefaultOptimizer("ASM");
    ctx = new ParserContext();
    ctx.setStrongTyping(true);
    ctx.addInput("bar", Bar.class);
    s = compileSetExpression("bar.intarray[0]", ctx);
    foo = new Foo();
    executeSetExpression(s, foo, "12");
    assertEquals(12, foo.getBar().getIntarray()[0].intValue());
    executeSetExpression(s, foo, "13");
    assertEquals(13, foo.getBar().getIntarray()[0].intValue());
}