73 lines
2.1 KiB
Forth
73 lines
2.1 KiB
Forth
# Scripting Support
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This is the scripting interface words for use with retro-unix
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or other interfaces providing device type 9 support.
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## Rev. 0
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The initial version of this I/O device provides support for some
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basic interactions.
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- obtaining the name of the script
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- obtaining the number of arguments passed
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- obtaining the arguments passed
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- "including" a file (which has RETRO process the file as inuput)
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## Rev. 1
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In 2020.10, the device was extended to add support for new additional
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introspection and control of the `include` process.
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- obtaining the current file name
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- obtaining the current line number
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- direct RETRO to ignore the rest of the current line
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- direct RETRO to ignore any remaining lines in the file
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## Rev. 2
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Adds support for `abort`.
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## Rev. 3
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Adds support for obtaining current source line text
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# The Code
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~~~
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{{
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:script:operation
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#9 io:scan-for
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dup n:negative? [ drop 'Error:_device_(0009)_not_found s:put nl ] if;
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io:invoke ;
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---reveal---
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:script:arguments (-n) #0 script:operation ;
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:script:get-argument (n-s) s:empty swap #1 script:operation ;
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:include (s-) #2 script:operation ;
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:script:name (-s) s:empty #3 script:operation ;
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:script:current-file (-s) s:empty #4 script:operation ;
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:script:current-line (-n) #5 script:operation class:data ; immediate
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:script:ignore-to-eol (-) #6 script:operation ;
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:script:abort-include (-) #7 script:operation ;
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:abort (-) &Compiler v:off #8 script:operation ;
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:script:current-line-text (-s) s:empty [ #9 script:operation ] sip ;
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}}
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~~~
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## d:source
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~~~
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'interface/scripting.retro s:keep
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dup 'abort d:lookup d:source store
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dup 'script:abort-include d:lookup d:source store
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dup 'script:ignore-to-eol d:lookup d:source store
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dup 'script:current-line d:lookup d:source store
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dup 'script:current-file d:lookup d:source store
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dup 'script:name d:lookup d:source store
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dup 'include d:lookup d:source store
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dup 'script:get-argument d:lookup d:source store
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dup 'script:arguments d:lookup d:source store
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drop
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~~~
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