groovy - Binding 'and' to && -

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i'm trying build groovy dsl binds and &&:

def binding = new binding([     and: && ])  def shell = new groovyshell(binding) println shell.evaluate '''         true , false     ''' }

however i'm getting compile-time error:

>groovyc andor.groovy org.codehaus.groovy.control.multiplecompilationerrorsexception: startup failed: andor.groovy: 2: unexpected token: && @ line 2, column 7.         and: &&          ^  1 error

how can bind "and" && operator?

groovy parses left operand right left(operand).getright(). turning and && operator parser related, , doubt able without tweaking groovy source code, antlr, etc.

to snippet working, code intercepts boolean::call metaprogramming, creating new eboolean object. uses getproperty method intercept getright() part:

import org.codehaus.groovy.control.compilerconfiguration  class eboolean {     boolean left     op op     def getproperty(string property) {         def right = boolean.parseboolean(property)         op == op.and ? left && right : null     } }  class meta {     {          boolean.metaclass.call { op op ->             new eboolean(left: delegate, op: op)         }     } }  enum op { , }  binding = new binding([ and: op.and ])  def compilerconfig = new compilerconfiguration( scriptbaseclass: delegatingscript.class.name)  def shell = new groovyshell(this.class.classloader, binding, compilerconfig) script = shell.parse( '''         true , false     ''' )  script.setdelegate new meta()  assert script.run() == false

it works, it's pretty specific, , hard use generically. won't work if want variable name context, a=false; true , a. binding won't much, doesn't work variables declared def inside scripts:


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