Validate the param of rand function in compile step

[xinghuayu007]

Proposed changes

The param of rand() function should be literal, but current compiler ingore to validate the literal param of rand function, it is validated in execution step. This PR make it validated in compile step, anbd make it more earlier to find the usage error of rand() function.

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• [] Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• [] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [] Documentation Update (if none of the other choices apply)
• [] Code refactor (Modify the code structure, format the code, etc...)

Checklist

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• [] I have create an issue on (Fix #ISSUE), and have described the bug/feature there in detail
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Further comments

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[kangkaisen]

+1

[morningman]

Hi @xinghuayu007 , you have to rebase to master to solve the conflict.

[xinghuayu007]

Hi @xinghuayu007 , you have to rebase to master to solve the conflict.

done

[kangkaisen]

+1