Groovy Script From Code

groovy-script-from-code.groovy

public static String getClosureBody(final Closure closure) {
    def node = closure.getMetaClass().getClassNode().getDeclaredMethods("doCall")[0].getCode();
    def writer = new StringWriter()
    node.visit(new AstNodeToGremlinScriptVisitor(writer))
    return writer.toString()
}

class AstNodeToGremlinScriptVisitor extends AstNodeToScriptVisitor {
def AstNodeToGremlinScriptVisitor(Writer writer, boolean showScriptFreeForm = true, boolean showScriptClass = true) {
    super(writer, showScriptFreeForm, showScriptClass)
}

@Override
void visitReturnStatement(ReturnStatement statement) {
    // printLineBreak()
    // print 'return '
    statement.getExpression().visit(this)
    printLineBreak()
}