forked from extern/nushell
85 lines
2.9 KiB
Rust
85 lines
2.9 KiB
Rust
use crate::object::base::OF64;
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use crate::object::{Primitive, TaggedDictBuilder, Value};
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use crate::prelude::*;
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fn convert_yaml_value_to_nu_value(v: &serde_yaml::Value, tag: impl Into<Tag>) -> Tagged<Value> {
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let tag = tag.into();
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match v {
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serde_yaml::Value::Bool(b) => Value::Primitive(Primitive::Boolean(*b)).tagged(tag),
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serde_yaml::Value::Number(n) if n.is_i64() => {
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Value::Primitive(Primitive::Int(n.as_i64().unwrap())).tagged(tag)
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}
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serde_yaml::Value::Number(n) if n.is_f64() => {
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Value::Primitive(Primitive::Float(OF64::from(n.as_f64().unwrap()))).tagged(tag)
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}
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serde_yaml::Value::String(s) => Value::string(s).tagged(tag),
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serde_yaml::Value::Sequence(a) => Value::List(
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a.iter()
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.map(|x| convert_yaml_value_to_nu_value(x, tag))
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.collect(),
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)
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.tagged(tag),
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serde_yaml::Value::Mapping(t) => {
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let mut collected = TaggedDictBuilder::new(tag);
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for (k, v) in t.iter() {
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match k {
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serde_yaml::Value::String(k) => {
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collected.insert_tagged(k.clone(), convert_yaml_value_to_nu_value(v, tag));
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}
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_ => unimplemented!("Unknown key type"),
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}
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}
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collected.into_tagged_value()
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}
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serde_yaml::Value::Null => Value::Primitive(Primitive::Nothing).tagged(tag),
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x => unimplemented!("Unsupported yaml case: {:?}", x),
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}
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}
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pub fn from_yaml_string_to_value(
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s: String,
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tag: impl Into<Tag>,
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) -> serde_yaml::Result<Tagged<Value>> {
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let v: serde_yaml::Value = serde_yaml::from_str(&s)?;
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Ok(convert_yaml_value_to_nu_value(&v, tag))
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}
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pub fn from_yaml(
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args: CommandArgs,
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_registry: &CommandRegistry,
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) -> Result<OutputStream, ShellError> {
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let span = args.name_span();
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let out = args.input;
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Ok(out
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.values
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.map(move |a| {
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let value_tag = a.tag();
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match a.item {
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Value::Primitive(Primitive::String(s)) => {
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match from_yaml_string_to_value(s, value_tag) {
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Ok(x) => ReturnSuccess::value(x),
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Err(_) => Err(ShellError::labeled_error_with_secondary(
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"Could not parse as YAML",
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"input cannot be parsed as YAML",
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span,
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"value originates from here",
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value_tag.span,
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)),
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}
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}
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_ => Err(ShellError::labeled_error_with_secondary(
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"Expected a string from pipeline",
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"requires string input",
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span,
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"value originates from here",
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a.span(),
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)),
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}
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})
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.to_output_stream())
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}
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