42 lines
1.7 KiB
Markdown
42 lines
1.7 KiB
Markdown
Schala
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======
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## The experimental programming language meta-interpreter
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Schala is a Rust-language framework written to make it easy to
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create and experiment with toy programming languages. It provides
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a common REPL, and a typeclass `ProgrammingLanguage` with methods
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for tokenizing text, parsing tokens, evaluating an abstract syntax tree,
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and other tasks that are common to all programming languages.
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Schala started out life as an experiment in writing a Javascript-like
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programming language that would never encounter any kind of runtime
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value error, but rather always return `null` under any kind of error
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condition. I had seen one too many Javascript `Uncaught TypeError:
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Cannot read property ___ of undefined` messages, and I was a bit frustrated.
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Plus I had always wanted to write a programming langauge from scratch,
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and Rust is a fun language to program in.
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Over time I became interested in playing around with other sorts
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of programming languages as well, and wanted to make the process
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as general as possible. I changed the name of the project to
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Schala, after the Princess of Zeal from *Chrono Trigger*, because I
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like classic JRPGs and because it sounds sort of like Scala, and I am
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continuing to work on the project as my time permits.
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### Reference works
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Here's a partial list of resources I've made use of in the process
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of learning how to write a programming language.
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#### Evaluation
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*Understanding Computation*, Tom Stuart, O'Reilly 2013
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#### Parsing
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http://journal.stuffwithstuff.com/2011/03/19/pratt-parsers-expression-parsing-made-easy/
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[Crafting Interpreters](http://www.craftinginterpreters.com/)
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#### LLVM
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http://blog.ulysse.io/2016/07/03/llvm-getting-started.html
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