Yehuda Katz e4226def16 Extract core stuff into own crates ... This commit extracts five new crates: - nu-source, which contains the core source-code handling logic in Nu, including Text, Span, and also the pretty.rs-based debug logic - nu-parser, which is the parser and expander logic - nu-protocol, which is the bulk of the types and basic conveniences used by plugins - nu-errors, which contains ShellError, ParseError and error handling conveniences - nu-textview, which is the textview plugin extracted into a crate One of the major consequences of this refactor is that it's no longer possible to `impl X for Spanned<Y>` outside of the `nu-source` crate, so a lot of types became more concrete (Value became a concrete type instead of Spanned<Value>, for example). This also turned a number of inherent methods in the main nu crate into plain functions (impl Value {} became a bunch of functions in the `value` namespace in `crate::data::value`).		2019-12-02 10:54:12 -08:00
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nu-errors	Extract core stuff into own crates	2019-12-02 10:54:12 -08:00
nu-parser	Extract core stuff into own crates	2019-12-02 10:54:12 -08:00
nu-protocol	Extract core stuff into own crates	2019-12-02 10:54:12 -08:00
nu-source	Extract nu_source into a crate	2019-11-25 07:37:33 -08:00
nu-textview	Extract core stuff into own crates	2019-12-02 10:54:12 -08:00