Note: This is taken from the Chicken Wiki, where a more recent version could be available.
The peep extension can be loaded into the chicken compiler to interactively explore the internal database during compilation of a program.
chicken 2.621 or higher is required to use this extension.
If the readline extension is installed, the interactive prompt supports line-editing.
Pass peep to the -extend option while compiling a file. This sets the user-post-analysis-hook and will start a read-eval-print loop after all optimizations have been performed. You can enter a number of commands (described below) to inspect the analysis database and node tree.
Before the compilation starts, a file named .peeprc will be loaded, if it exists, either from the current directory, or from the user's home directory.
When the REPL is started, you can enter arbitrary Scheme expressions, including any of the following commands:
(.pp [X]) [.p] pretty-print node or other value (defaults to program graph) (.dump) [.d] dump database (.find NAME) [.f] find symbol in database (.show SYMBOL) [.s] show properties of symbol (.get SYMBOL PROP) [.g] get symbol property (.set SYMBOL PROP X) set symbol property (.select PROP ...) [.sel] return list of symbols that have given properties (.inspect [X]) [.i] inspect value (defaults to program graph) (.props) list valid symbol properties (.quit) [.q] continue compilation until finished (.continue [PASS]) [.c] continue until PASS is reached or to next analysis (.help) [.h] show this message
The special expression # holds the result of the last entered expression.
Copyright (c) 2007, Felix L. Winkelmann All rights reserved.
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