Creating a DSL
summary
A text DSL is used to encode supplier discount and rebate rules for automatic margin calculation and it proves readable enough for non-developers to copy paste and edit; implementation uses a hand‑written parser producing an AST with location info, a small interpreter rather than codegen, and Babel code‑frame for precise errors; avoids PEG.js and big regex pitfalls and adds a web syntax highlighter and autocomplete; an experimental Rust+WASM JavaScript sandbox is pursued for heavier plugin needs.
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chapters (7)
- 0:00Start
- 1:37What is a domain specific language?
- 8:01DSL vs. General Purpose
- 10:58Compiler
- 13:58Regular Expression
- 15:52Define an AST
- 33:14Alternative
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