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d56377aea9
Right now, when opening a shell with `script/ghci`, you can encounter a tremendous slowdown by turning on pretty-printing (with `pretty`) then printing any value (`[0..3]` should work). This stems from the fact that our `.ghci` specifies the `prettyShow` function, defined in Semantic.Util, as its `-interactive-print` function. While this is a good choice of a pretty-printer, the fact that it is in Util, a file which imports many modules and uses fancy types, is not good: pretty-printing cannot begin until Util is recompiled and linked in. This explains why benchmarking this slowdown revealed nothing but `dlsym` calls: we thought it was due to linking in the tree-sitter libraries, but it was actually waiting for Util to compile and link in. The fix is simple: define `prettyShow` in another module. This should provide significant speedups to our developer workflow.
43 lines
1.4 KiB
Plaintext
43 lines
1.4 KiB
Plaintext
-- Load the pretty-show & hscolour packages for use with :pretty.
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:set -package pretty-show -package hscolour
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-- See docs/💡ProTip!.md
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:undef pretty
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:def pretty \ _ -> return ":set -interactive-print Semantic.Util.Pretty.prettyShow"
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-- See docs/💡ProTip!.md
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:undef no-pretty
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:def no-pretty \_ -> return ":set -interactive-print System.IO.print"
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-- See docs/💡ProTip!.md
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:undef r
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:def r \_ -> return (unlines [":reload", ":pretty"])
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-- See docs/💡ProTip!.md for documentation & examples.
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:{
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assignmentExample lang = case lang of
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"Python" -> mk "py" "python"
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"Go" -> mk "go" "go"
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"Ruby" -> mk "rb" "ruby"
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"JavaScript" -> mk "js" "typescript"
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"TypeScript" -> mk "ts" "typescript"
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"Haskell" -> mk "hs" "haskell"
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"Markdown" -> mk "md" "markdown"
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"JSON" -> mk "json" "json"
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"Java" -> mk "java" "java"
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"PHP" -> mk "php" "php"
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_ -> mk "" ""
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where mk fileExtension parser = putStrLn ("example: fmap (() <$) . runTask . parse " ++ parser ++ "Parser =<< Semantic.Util.blob \"example." ++ fileExtension ++ "\"") >> return ("import Parsing.Parser\nimport Semantic.Task\nimport Semantic.Util")
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:}
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:undef assignment
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:def assignment assignmentExample
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-- Enable breaking on errors for code written in the repl.
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:seti -fbreak-on-error
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-- Continue loading after warnings when in the repl.
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:set -Wwarn
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-- Use a cyan lambda as the prompt.
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:set prompt "\ESC[1;36m\STXλ \ESC[m\STX"
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