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MiniRobotLanguage (MRL)
RET. Statement
RETurn from Gosub
Intention
Return from a Subroutine that was called using any of the statements below.
Returns to the line/statement following the Subroutine call.
A subroutine can be called with any of the following Instructions / Instruction-groups:
• JSR. - Jump SubRoutine (Label) (Same as GSB.)
• STW. - Description with the "W", or "V"-Option
• ! SCW - Search-Child-Window with the "W", or "V"-Option
• ITW. with the "W", or "V"-Option
• ICW. with the "W", or "V"-Option
• any other of the JIX. - Jumps, when using the ":"-Label Option
• any of the FEX.-Enumeration Instructions
Syntax
RET.[P1]
Parameter Explanation
P1 - (optional) how many level you want to jump up. If omitted, the RET. Instruction will bring you just up one level. If you want to get to the Top-Level, for example in case of errors, you can write:
RET.all
this will bring you in one strike to the Top-Level of the Script. Note that all levels below have been removed from the Subprogram-Return Stack.
Speed in Ticks:
This Command uses typically between 10 to 20 Ticks.
Example
'***********************************************
' Example 1 - without Parameters,
'***********************************************
[First.txt]
DBM.2
JSR.Laba
CAL.$$AAA=3+(9*$$AAA)+2.5
PRT. Resultat ist: $$AAA
END.
:Laba
: $$AAA=10
RET.
'***********************************************
' Example 2 - with Parameter
'***********************************************
DBM.2
: $$LAA=Laba
JSR.$$LAA|10
CAL.$$AAA=3+(9*$$AAA)+2.5
PRT. Resultat ist: $$AAA
END\
:Laba
: $$AAA=§§_01
PRT. $$AAA
RET.
Remarks
Please do not intermix RET. with RTS, because RTS is used to Return from Subprograms which are called with JNF.
Limitations:
There are no relevant depth limitations or limitations about recursive functions.
See also:
• JSR. - Jump SubRoutine (Label)
• RTS. - ReTurn from Subprogram
• JME. - Jump on More or Equal
• JLE. - Jump on Less or Equal