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Make get_env_var return a reference to a Value (#13987)

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# Description
Title says it all, changes `EngineState::get_env_var` to return a
`Option<&'a Value>` instead of an owned `Option<Value>`. This avoids
some unnecessary clones.

I also made a similar change to the `PluginExecutionContext` trait.
This commit is contained in:
Ian Manske
2024-10-02 04:05:48 -07:00
committed by GitHub
parent f03ba6793e
commit 157494e803
17 changed files with 74 additions and 51 deletions
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5
crates/nu-cmd-plugin/src/util.rs
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@ -95,8 +95,9 @@ pub(crate) fn get_plugin_dirs(
let working_set = StateWorkingSet::new(engine_state);
let value = working_set
.find_variable(b"$NU_PLUGIN_DIRS")
.and_then(|var_id| working_set.get_constant(var_id).ok().cloned())
.or_else(|| stack.get_env_var(engine_state, "NU_PLUGIN_DIRS"));
.and_then(|var_id| working_set.get_constant(var_id).ok())
.or_else(|| stack.get_env_var(engine_state, "NU_PLUGIN_DIRS"))
.cloned(); // TODO: avoid this clone
// Get all of the strings in the list, if possible
value