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kernfamily4
Level 7

Global String Functions in SG App

I am trying to use the global string functions in my app and I am receiving compile error messages. Do I need to include something for these functions to work? I noticed the SG example files do not have Makefiles. Do I need one with some reference to the global functions?

Here is some test code that is in my Init function of my main scene component:

   '** Trim off "List" from the FilterName and add "ID"
   FilterName = "CategoryList"
   Pos = Instr(FilterName, 1, "List")
   Key = Left (FilterName, Pos - 1) + "ID"

Here are the errors I am receiving:

--- Syntax Error. Builtin function call expected. (compile error &h9d) in pkg:/components/TestScene.xml(15)
--- Syntax Error. Builtin function call expected. (compile error &h9d) in pkg:/components/TestScene.xml(16)

I am unable to find any explanations for error messages in the documentation.

I also tried this code and received the same error messages:

   '** Trim off "List" from the FilterName and add "ID"

   FilterName = CreateObject ("roString")
   FilterName = "CategoryList"
   Pos = FilterName.Instr(1, "List")
   Key = FilterName.Left (Pos) + "ID"

Any help would be appreciated. Thanks.
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2 Replies
EnTerr
Level 8

Re: Global String Functions in SG App

POS is a reserved word in BrightScript, see https://sdkdocs.roku.com/display/sdkdoc/Reserved+Words

You should never, ever - never ever - use one of the reserved words as variable name, it won't work. 
I agree, the diagnostic does not help. In its defense, pos(0) is an obscure function (related to PRINT).
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kernfamily4
Level 7

Re: Global String Functions in SG App

Thank you,

I never thought to check the reserved word list. In my defense, the message did not mention reserved words. On the other hand, POS is a function in many languages, so I should have known better.

Have a great day
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