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Merge pull request #883 from jonathandturner/magic_env_vars

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Add support for $nu:config and $nu:env
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Jonathan Turner 2019-10-29 07:22:44 +13:00 committed by GitHub
commit bc309705a9
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1 changed files with 19 additions and 5 deletions
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24
src/evaluate/evaluator.rs
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@ -5,6 +5,7 @@ use crate::parser::{
CommandRegistry, Text,
};
use crate::prelude::*;
use crate::TaggedDictBuilder;
use derive_new::new;
use indexmap::IndexMap;
use log::trace;
@ -164,11 +165,24 @@ fn evaluate_reference(
trace!("Evaluating {} with Scope {}", name, scope);
match name {
hir::Variable::It(_) => Ok(scope.it.item.clone().tagged(tag)),
hir::Variable::Other(inner) => Ok(scope
.vars
.get(inner.slice(source))
.map(|v| v.clone())
.unwrap_or_else(|| Value::nothing().tagged(tag))),
hir::Variable::Other(inner) => match inner.slice(source) {
x if x == "nu:env" => {
let mut dict = TaggedDictBuilder::new(&tag);
for v in std::env::vars() {
dict.insert(v.0, Value::string(v.1));
}
Ok(dict.into_tagged_value())
}
x if x == "nu:config" => {
let config = crate::data::config::read(tag.clone(), &None)?;
Ok(Value::row(config).tagged(tag))
}
x => Ok(scope
.vars
.get(x)
.map(|v| v.clone())
.unwrap_or_else(|| Value::nothing().tagged(tag))),
},
}
}