2019-08-19 07:16:39 +02:00
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use crate::commands::WholeStreamCommand;
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2019-08-01 05:25:59 +02:00
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use crate::prelude::*;
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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`).
2019-11-26 03:30:48 +01:00
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use nu_errors::ShellError;
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2019-12-04 20:52:31 +01:00
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use nu_protocol::{Signature, TaggedDictBuilder, UntaggedValue};
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2019-08-01 05:25:59 +02:00
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2019-08-19 07:16:39 +02:00
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pub struct Tags;
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2020-05-29 10:22:52 +02:00
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#[async_trait]
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2019-08-19 07:16:39 +02:00
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impl WholeStreamCommand for Tags {
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fn name(&self) -> &str {
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"tags"
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}
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fn signature(&self) -> Signature {
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Signature::build("tags")
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}
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2019-08-30 00:52:32 +02:00
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fn usage(&self) -> &str {
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"Read the tags (metadata) for values."
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}
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2020-05-29 10:22:52 +02:00
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async fn run(
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2019-08-30 00:52:32 +02:00
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&self,
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args: CommandArgs,
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registry: &CommandRegistry,
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) -> Result<OutputStream, ShellError> {
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tags(args, registry)
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}
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2019-08-19 07:16:39 +02:00
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}
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fn tags(args: CommandArgs, _registry: &CommandRegistry) -> Result<OutputStream, ShellError> {
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2019-08-01 05:25:59 +02:00
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Ok(args
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.input
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.map(move |v| {
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2019-08-05 10:54:29 +02:00
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let mut tags = TaggedDictBuilder::new(v.tag());
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2019-08-01 05:25:59 +02:00
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{
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2019-09-29 07:13:56 +02:00
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let anchor = v.anchor();
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2019-11-21 15:33:14 +01:00
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let span = v.tag.span;
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2019-08-05 10:54:29 +02:00
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let mut dict = TaggedDictBuilder::new(v.tag());
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2019-12-04 20:52:31 +01:00
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dict.insert_untagged("start", UntaggedValue::int(span.start() as i64));
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dict.insert_untagged("end", UntaggedValue::int(span.end() as i64));
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2019-11-21 15:33:14 +01:00
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tags.insert_value("span", dict.into_value());
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2019-08-10 22:18:14 +02:00
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2019-10-13 06:12:43 +02:00
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match anchor {
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2019-09-29 07:18:59 +02:00
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Some(AnchorLocation::File(source)) => {
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2019-12-04 20:52:31 +01:00
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tags.insert_untagged("anchor", UntaggedValue::string(source));
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2019-08-01 05:25:59 +02:00
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}
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2019-09-29 07:18:59 +02:00
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Some(AnchorLocation::Url(source)) => {
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2019-12-04 20:52:31 +01:00
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tags.insert_untagged("anchor", UntaggedValue::string(source));
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2019-08-01 05:25:59 +02:00
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}
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_ => {}
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}
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}
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2019-11-21 15:33:14 +01:00
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tags.into_value()
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2019-08-01 05:25:59 +02:00
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})
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.to_output_stream())
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}
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2020-05-18 14:56:01 +02:00
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#[cfg(test)]
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mod tests {
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use super::Tags;
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#[test]
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fn examples_work_as_expected() {
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use crate::examples::test as test_examples;
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test_examples(Tags {})
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}
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}
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