R Under development (unstable) (2024-02-16 r85931 ucrt) -- "Unsuffered Consequences"
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> library("R.rsp")
R.rsp v0.46.0 successfully loaded. See ?R.rsp for help.
> 
> x <- rstring("A random integer in [1,100]: <%=sample(1:100, size=1)%>\n")
> cat(x)
A random integer in [1,100]: 23
> 
> # Passing arguments
> x <- rstring("A random integer in [1,<%=K%>]: <%=sample(1:K, size=1)%>\n", args=list(K=50))
> cat(x)
A random integer in [1,50]: 28
> 
> x <- rstring("A random integer in [1,<%=K%>]: <%=sample(1:K, size=1)%>\n", args=list(K=50), verbose = TRUE)
rstring() for default...
 Length of RSP string: 57
 rstring() for RspString...
  Assigning RSP arguments to processing environment...
   Environment: R_GlobalEnv
   RSP arguments:
   List of 1
    $ K: num 50
   Variables assigned: [1] K
     member data.class dimension objectSize
   1      K    numeric         1         56
  Assigning RSP arguments to processing environment...done
  Parse RSP string to RSP document...
   Parse environment: R_GlobalEnv
     member data.class dimension objectSize
   1      K    numeric         1         56
   Parsing RSP string...
    Compile until: '*'
    Return as: 'RspDocument'
    Dropping 'empty' RSP comments...
     Length of RSP string before: 57
     No 'empty' RSP comments found.
    Dropping 'empty' RSP comments...done
    Dropping 'paired' RSP comments...
     Length of RSP string before: 57
     No 'paired' RSP comments found.
    Dropping 'paired' RSP comments...done
    Processing RSP preprocessing directives...
     Length of RSP string before: 57
     No RSP preprocessing directives found.
    Processing RSP preprocessing directives...done
    Processing RSP expressions...
     Length of RSP string before: 57
     Number of (unparsed) RSP expressions found: 2
     Length of RSP string after: 57
    Processing RSP expressions...done
   Parsing RSP string...done
   RspDocument:
   Source: NA
   Total number of RSP constructs: 5
   Number of RspCodeChunk(s): 2
   Number of RspText(s): 3
   Content type: NA
  Parse RSP string to RSP document...done
  rstring() for RspDocument...
   Coerce RSP document to source code...
    Language: R
    Generated source code:
    ## = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
     ## This is a self-contained R script generated from an RSP document.
     ## It may be evaluated using source() as is.
    
    [...]
    
    ## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
     ## RSP source code script [END]
     ## - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
   Coerce RSP document to source code...done
   rstring() for RspRSourceCode...
    Environment: R_GlobalEnv
   rstring() for RspRSourceCode...done
  rstring() for RspDocument...done
 rstring() for RspString...done
rstring() for default...done
> cat(x)
A random integer in [1,50]: 18
> 
> proc.time()
   user  system elapsed 
   0.39    0.06    0.43