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

Example 1 with ParserContext

use of org.mvel2.ParserContext in project drools by kiegroup.

the class ResultVerifier method isSuccess.

protected Boolean isSuccess(VerifyField currentField) {
    String s = "__fact__." + currentField.getFieldName() + " " + currentField.getOperator() + " __expected__";
    CompiledExpression expression = new ExpressionCompiler(s, parserContext).compile();
    return (Boolean) MVELSafeHelper.getEvaluator().executeExpression(expression, variables);
}

Example 2 with ParserContext

use of org.mvel2.ParserContext in project drools by kiegroup.

the class DefaultEnumClassBuilder method buildFields.

protected void buildFields(ClassWriter cw, EnumClassDefinition classDef) {
    FieldVisitor fv;
    for (FieldDefinition fld : classDef.getFieldsDefinitions()) {
        fv = cw.visitField(ACC_PRIVATE + ACC_FINAL, fld.getName(), BuildUtils.getTypeDescriptor(fld.getTypeName()), null, null);
        fv.visitEnd();
    }
    {
        fv = cw.visitField(ACC_PRIVATE + ACC_STATIC, "$context", "Lorg/mvel2/ParserContext;", null, null);
        fv.visitEnd();
    }
}

Example 3 with ParserContext

use of org.mvel2.ParserContext in project drools by kiegroup.

the class DefaultEnumClassBuilder method buildGettersAndSetters.

protected void buildGettersAndSetters(ClassWriter cw, EnumClassDefinition classDef) {
    MethodVisitor mv;
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "values", "()[" + BuildUtils.getTypeDescriptor(classDef.getClassName()), null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, BuildUtils.getInternalType(classDef.getClassName()), "$VALUES", "[" + BuildUtils.getTypeDescriptor(classDef.getClassName()));
        mv.visitMethodInsn(INVOKEVIRTUAL, "[" + BuildUtils.getTypeDescriptor(classDef.getClassName()), "clone", "()Ljava/lang/Object;");
        mv.visitTypeInsn(CHECKCAST, "[" + BuildUtils.getTypeDescriptor(classDef.getClassName()));
        mv.visitInsn(ARETURN);
        mv.visitMaxs(1, 0);
        mv.visitEnd();
    }
    for (FieldDefinition fld : classDef.getFieldsDefinitions()) {
        mv = cw.visitMethod(ACC_PUBLIC, BuildUtils.getterName(fld.getName(), fld.getTypeName()), "()" + BuildUtils.getTypeDescriptor(fld.getTypeName()), null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, BuildUtils.getInternalType(classDef.getName()), fld.getName(), BuildUtils.getTypeDescriptor(fld.getTypeName()));
        mv.visitInsn(BuildUtils.returnType(fld.getTypeName()));
        mv.visitMaxs(BuildUtils.sizeOf(fld.getTypeName()), 1);
        mv.visitEnd();
        mv = cw.visitMethod(ACC_PUBLIC, BuildUtils.setterName(fld.getName(), fld.getTypeName()), "(" + BuildUtils.getTypeDescriptor(fld.getTypeName()) + ")V", null, null);
        mv.visitCode();
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 1 + BuildUtils.sizeOf(fld.getTypeName()));
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "get$context", "()Lorg/mvel2/ParserContext;", null, null);
        mv.visitCode();
        mv.visitFieldInsn(GETSTATIC, BuildUtils.getInternalType(classDef.getName()), "$context", "Lorg/mvel2/ParserContext;");
        mv.visitInsn(ARETURN);
        mv.visitMaxs(1, 0);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC + ACC_STATIC, "set$context", "(Lorg/mvel2/ParserContext;)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(PUTSTATIC, BuildUtils.getInternalType(classDef.getName()), "$context", "Lorg/mvel2/ParserContext;");
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
}

Example 4 with ParserContext

use of org.mvel2.ParserContext in project drools by kiegroup.

the class MVELTest method test1.

@Test
public void test1() {
    final ParserContext pc = new ParserContext();
    pc.addInput("x", String.class);
    pc.setStrongTyping(true);
    final Object o = MVEL.compileExpression("x.startsWith('d')", pc);
    final Map vars = new HashMap();
    vars.put("x", "d");
    MVEL.executeExpression(o, vars);
    System.out.println(o);
}

Example 5 with ParserContext

use of org.mvel2.ParserContext in project drools by kiegroup.

the class QueryElementBuilder method getParserContext.

private ParserContext getParserContext(RuleBuildContext context) {
    MVELDialectRuntimeData data = (MVELDialectRuntimeData) context.getPkg().getDialectRuntimeRegistry().getDialectData("mvel");
    ParserConfiguration conf = data.getParserConfiguration();
    conf.setClassLoader(context.getKnowledgeBuilder().getRootClassLoader());
    return new ParserContext(conf);
}