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enable cargo build --features=extra to build plugins (#448)

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This commit is contained in:
Darren Schroeder
2021-12-07 14:06:34 -06:00
committed by GitHub
parent 8d027a0617
commit 512dcf0988
10 changed files with 244 additions and 150 deletions
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59
crates/nu_plugin_example/src/nu/mod.rs Normal file
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use crate::Example;
use nu_plugin::{EvaluatedCall, LabeledError, Plugin};
use nu_protocol::{Category, Signature, SyntaxShape, Value};
impl Plugin for Example {
fn signature(&self) -> Vec<Signature> {
// It is possible to declare multiple signature in a plugin
// Each signature will be converted to a command declaration once the
// plugin is registered to nushell
vec![
Signature::build("test-1")
.desc("Signature test 1 for plugin. Returns Value::Nothing")
.required("a", SyntaxShape::Int, "required integer value")
.required("b", SyntaxShape::String, "required string value")
.switch("flag", "a flag for the signature", Some('f'))
.optional("opt", SyntaxShape::Int, "Optional number")
.named("named", SyntaxShape::String, "named string", Some('n'))
.rest("rest", SyntaxShape::String, "rest value string")
.category(Category::Experimental),
Signature::build("test-2")
.desc("Signature test 2 for plugin. Returns list of records")
.required("a", SyntaxShape::Int, "required integer value")
.required("b", SyntaxShape::String, "required string value")
.switch("flag", "a flag for the signature", Some('f'))
.optional("opt", SyntaxShape::Int, "Optional number")
.named("named", SyntaxShape::String, "named string", Some('n'))
.rest("rest", SyntaxShape::String, "rest value string")
.category(Category::Experimental),
Signature::build("test-3")
.desc("Signature test 3 for plugin. Returns labeled error")
.required("a", SyntaxShape::Int, "required integer value")
.required("b", SyntaxShape::String, "required string value")
.switch("flag", "a flag for the signature", Some('f'))
.optional("opt", SyntaxShape::Int, "Optional number")
.named("named", SyntaxShape::String, "named string", Some('n'))
.rest("rest", SyntaxShape::String, "rest value string")
.category(Category::Experimental),
]
}
fn run(
&mut self,
name: &str,
call: &EvaluatedCall,
input: &Value,
) -> Result<Value, LabeledError> {
// You can use the name to identify what plugin signature was called
match name {
"test-1" => self.test1(call, input),
"test-2" => self.test2(call, input),
"test-3" => self.test3(call, input),
_ => Err(LabeledError {
label: "Plugin call with wrong name signature".into(),
msg: "using the wrong signature".into(),
span: Some(call.head),
}),
}
}
}