I'm having issues with closures/"methods" in groovy. The way they don't let you call them unless they're already defined is highly upsetting.
Code:
def pageOne = {
show("You are on page one.");
pageTwo()
}
def pageTwo = {
show("You are on page two.");
}
pageOne()
The above code will not work because I'm calling pageTwo before it's defined. If I moved it around, it would work fine.
Code:
def pageTwo = {
show("You are on page two.");
}
def pageOne = {
show("You are on page one.");
pageTwo()
}
pageOne()
But then what if I want to go to page one again?
Code:
def pageTwo = {
show("You are on page two.");
pageOne()
}
def pageOne = {
show("You are on page one.");
pageTwo()
}
pageOne()
Then it's an issue again.
I tried going around it by having a dynamic method, such as
Code:
def goToPage = {
page ->
switch (page) {
case 0:
break;
case 1:
show("You are on page one.")
break;
case 2:
show("You are on page two.")
break;
}
}
goToPage(1);
And this works fine, until you want to switch pages from within the page closure.
Code:
def goToPage = {
page ->
switch (page) {
case 0:
break;
case 1:
show("You are on page one.")
goToPage(2);
break;
case 2:
show("You are on page two.")
break;
}
}
goToPage(1);
after some fumbling about, this is a solution that I found, but it's extremely cumbersome.
Code:
def pageToGoTo = 1;
def pagesEnded = false;
def goToPage = {
page ->
switch (page) {
case 0:
break;
case 1:
showButton("You are on page one.")
pageToGoTo = 2;
break;
case 2:
showButton("You are on page two.")
pageToGoTo = 3;
break;
case 3:
showButton("You are on page three.")
pageToGoTo = 1;
break;
}
}
def pageNav = {
while (!pagesEnded) {
goToPage(pageToGoTo);
}
}
pageNav()
In the end, I will make do with what I can come up with, but I'm curious how other script writers tackled this, or if doti himself has any ideas.
Basically, I'd like to be able to declare a closure, basically promising the compiler that it's defined somewhere, and then it allowing me to use it even before its defined. I don't mess with groovy outside of sexscripts, so I'm not sure if using methods instead of closures will help, I suspect it would, but the compiler does not let me use methods in the script, I assume it's a security thing? (doti?)
method attempt
Code:
def static doWhatever () {
// doing stuff
}
comes up with
Code:
script15384246411491261545393.groovy: 42: Method definition not expected here. Please define the method at an appropriate place or perhaps try using a block/Closure instead. at line: 42 column: 3. File: script15384246411491261545393.groovy @ line 42, column 3.
def static doWhatever () {
^
1 error
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