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Add environment variable support for modules (#331)

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* Add 'expor env' dummy command

* (WIP) Abstract away module exportables as Overlay

* Switch to Overlays for use/hide

Works for decls only right now.

* Fix passing import patterns of hide to eval

* Simplify use/hide of decls

* Add ImportPattern as Expr; Add use env eval

Still no parsing of "export env" so I can't test it yet.

* Refactor export parsing; Add InternalError

* Add env var export and activation; Misc changes

Now it is possible to `use` env var that was exported from a module.

This commit also adds some new errors and other small changes.

* Add env var hiding

* Fix eval not recognizing hidden decls

Without this change, calling `hide foo`, the evaluator does not know
whether a custom command named "foo" was hidden during parsing,
therefore, it is not possible to reliably throw an error about the "foo"
name not found.

* Add use/hide/export env var tests; Cleanup; Notes

* Ignore hide env related tests for now

* Fix main branch merge mess

* Fixed multi-word export def

* Fix hiding tests on Windows

* Remove env var hiding for now
This commit is contained in:
Jakub Žádník
2021-11-16 01:16:06 +02:00
committed by GitHub
parent ab22619f4a
commit 5459d30a24
22 changed files with 1050 additions and 261 deletions
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16
crates/nu-protocol/src/shell_error.rs
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@ -84,6 +84,18 @@ pub enum ShellError {
#[diagnostic(code(nu::shell::variable_not_found), url(docsrs))]
VariableNotFoundAtRuntime(#[label = "variable not found"] Span),
#[error("Environment variable not found")]
#[diagnostic(code(nu::shell::variable_not_found), url(docsrs))]
EnvVarNotFoundAtRuntime(#[label = "environment variable not found"] Span),
#[error("Environment variable is not a string")]
#[diagnostic(code(nu::shell::variable_not_found), url(docsrs))]
EnvVarNotAString(#[label = "does not evaluate to a string"] Span),
#[error("Not found.")]
#[diagnostic(code(nu::parser::not_found), url(docsrs))]
NotFound(#[label = "did not find anything under this name"] Span),
#[error("Can't convert to {0}.")]
#[diagnostic(code(nu::shell::cant_convert), url(docsrs))]
CantConvert(String, String, #[label("can't convert {1} to {0}")] Span),
@ -190,6 +202,10 @@ pub enum ShellError {
#[error("Name not found")]
#[diagnostic(code(nu::shell::name_not_found), url(docsrs))]
DidYouMean(String, #[label("did you mean '{0}'?")] Span),
#[error("Non-UTF8 string.")]
#[diagnostic(code(nu::parser::non_utf8), url(docsrs))]
NonUtf8(#[label = "non-UTF8 string"] Span),
}
impl From<std::io::Error> for ShellError {