I'm less sure of the cause within Pico-8 but the solution is similar: it needs leading spaces preserved. I see a similar issue for a space before a "local" keyword being collapsed and causing problems. (picotool's own parser doesn't see the problem because I implemented short-if as a formal part of the grammar before I realized that Pico-8 was using a preprocessor replacement.)
Pico-8 doesn't recognize the "if" as a short-if and fails to insert the "then" and "end" keywords before parsing the Lua.
#Python minify code#
Refactored AST walking code to make it easier to build tools that read or transform the parser tree. But if you do want to build against it, patience with non-backwards compatible changes will be appreciated. This project has already gotten away from me a bit, so I'm not sure how far I'll take it. There are known issues regarding parsing and token counting, and the library APIs are incomplete and messy. There is much more luafmt can do by analyzing the AST, but this is not yet implemented.Īs of today, this is very much a v0.1 early release. The current version of this tool is simple and only adjusts indentation. The inspirational use case for this library is actually luafmt, which re-formats the Lua code of a cart to be easier to read. Minifying reduces the (uncompressed) character count to 65% of the original size on average. Here is a chart of the character count, minified character count, and token count of 496 carts that have been posted to the BBS, relative to the Pico-8 maximums:Īs shown, even un-minified code tends to stay below the token count, percentage-wise. All luamin does is make the code difficult to read, without much benefit. The Pico-8 community benefits more from published carts with code that is easy to read and well commented. Statistically, you'll run out of tokens before you run out of characters. I've included the Lua minifier (luamin) as an example tool, though I don't actually think it's a good idea to use it. All game data can be transformed or created with Python code and written to a. Additional modules provide access to the graphics, map, sound, and music data. The Python library includes a hand-written Lua parser with support for Pico-8 features, with API access to the token stream and abstract syntax tree. printast: prints a visualization of the Lua parser abstract syntax tree (AST).listtokens: prints a visualization of Lua tokens.luafind: searches for lines of Lua code containing a string or matching a pattern.p8 cart with Lua rewritten to use a minimal number of characters, to make it difficult to read p8 cart with Lua rewritten with regular formatting, to make it easier to read listlua: prints the Lua region of a cart.build: builds a cart from pieces of other carts.Picotool currently includes the following tools:
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