Difference between revisions of "Goto"
From Wiki
(→Description) |
|||
| (5 intermediate revisions by 4 users not shown) | |||
| Line 1: | Line 1: | ||
| − | + | {{command header|Flow Control}} | |
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | ||
| − | + | {{body|goto {label}|The ''goto'' command moves the execution to another part of the script. The destination point is given by a [[label]].}} | |
| − | The | + | |
| − | |||
| − | + | {{note| | |
| − | A label | + | *Don't goto out of a [[sub]]. Always use [[return]]! EasyUO will probably not crash but it is VERY bad programming style. |
| + | *A label in the code must be followed by a colon, where as gotoing to the label does <b>not</b> require a following colon. | ||
| + | *Inline comments do not work with labels in EasyUO 1.4.}} | ||
| − | |||
| − | |||
| − | |||
==== Example ==== | ==== Example ==== | ||
| Line 27: | Line 20: | ||
</pre> | </pre> | ||
| − | === | + | ==== Simulating a Switch Statement ==== |
| + | |||
| + | Switch structures (like seen in C/C++) can be simulated in EasyUO using the goto statement: | ||
| + | |||
| + | <pre> | ||
| + | set %a #random % 3 + 1 | ||
| + | goto case , %a | ||
| + | |||
| + | case1: | ||
| + | display ok One | ||
| + | goto case_exit | ||
| + | |||
| + | case2: | ||
| + | display ok Two | ||
| + | goto case_exit | ||
| + | |||
| + | case3: | ||
| + | display ok Three | ||
| + | goto case_exit | ||
| + | |||
| + | case_exit: | ||
| + | halt</pre> | ||
| − | + | == Related Commands == | |
| − | {| | + | {| style="background:gainsboro; color:black; border: 2px #aaa solid;" |
| − | | Width= | + | | Width=250px align=center | [[label]] |
| − | + | ||
|} | |} | ||
| + | =See Also= | ||
| + | {{Flow Control}} | ||
Latest revision as of 16:58, 5 September 2007
Synopsis
goto {label}
Description
The goto command moves the execution to another part of the script. The destination point is given by a label.
| Note: |
Example
loop: if %donotloop goto exit goto loop exit:
Simulating a Switch Statement
Switch structures (like seen in C/C++) can be simulated in EasyUO using the goto statement:
set %a #random % 3 + 1 goto case , %a case1: display ok One goto case_exit case2: display ok Two goto case_exit case3: display ok Three goto case_exit case_exit: halt
Related Commands
| label |
See Also
Flow Control
- Flow control commands allow scripts to make decisions based on the evaluation of boolean expressions.
| break | Jumps to first statement outside of loop |
| call | Transfers execution to another script file |
| continue | Jumps execution of a loop to next iteration |
| exit | Exits a called script |
| for | Creates a counting loop |
| gosub | Transfers execution to the matching sub |
| goto | Jumps to another part of the script given by a label |
| halt | Stops the script |
| if | Executes code based on the evaluation of an expression |
| pause | Temporarily stops the execution of the current script |
| repeat..until | Creates a loop that checks condition after execution |
| return | Returns from a sub |
| stop | Ends the script |
| while | Creates a loop that checks condition before execution |
