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Plugin json (#474)

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* json encoder

* thread to pass messages

* description for example
This commit is contained in:
Fernando Herrera
2021-12-12 11:50:35 +00:00
committed by GitHub
parent f8e6620e48
commit 4d7dd23779
30 changed files with 1010 additions and 523 deletions
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8
crates/nu-parser/src/errors.rs
View File

@ -65,6 +65,10 @@ pub enum ParseError {
)]
UnexpectedKeyword(String, #[label("unexpected {0}")] Span),
#[error("Incorrect value")]
#[diagnostic(code(nu::parser::incorrect_value), url(docsrs), help("{2}"))]
IncorrectValue(String, #[label("unexpected {0}")] Span, String),
#[error("Multiple rest params.")]
#[diagnostic(code(nu::parser::multiple_rest_params), url(docsrs))]
MultipleRestParams(#[label = "multiple rest params"] Span),
@ -187,9 +191,9 @@ pub enum ParseError {
#[diagnostic(code(nu::parser::export_not_found), url(docsrs))]
ExportNotFound(#[label = "could not find imports"] Span),
#[error("File not found: {0}")]
#[error("File not found")]
#[diagnostic(code(nu::parser::file_not_found), url(docsrs))]
FileNotFound(String),
FileNotFound(String, #[label("File not found: {0}")] Span),
#[error("{0}")]
#[diagnostic()]

250
crates/nu-parser/src/parse_keywords.rs
View File

@ -12,7 +12,7 @@ use std::collections::{HashMap, HashSet};
use crate::{
lex, lite_parse,
parser::{
check_name, garbage, garbage_statement, parse, parse_block_expression,
check_call, check_name, garbage, garbage_statement, parse, parse_block_expression,
parse_import_pattern, parse_internal_call, parse_signature, parse_string, trim_quotes,
},
ParseError,
@ -719,7 +719,10 @@ pub fn parse_use(
);
}
} else {
error = error.or(Some(ParseError::FileNotFound(module_filename)));
error = error.or(Some(ParseError::FileNotFound(
module_filename,
import_pattern.head.span,
)));
(ImportPattern::new(), Overlay::new())
}
} else {
@ -1059,7 +1062,7 @@ pub fn parse_source(
}
}
} else {
error = error.or(Some(ParseError::FileNotFound(filename)));
error = error.or(Some(ParseError::FileNotFound(filename, spans[1])));
}
} else {
return (
@ -1093,14 +1096,12 @@ pub fn parse_register(
working_set: &mut StateWorkingSet,
spans: &[Span],
) -> (Statement, Option<ParseError>) {
use std::{path::PathBuf, str::FromStr};
use nu_plugin::plugin::{get_signature, PluginDeclaration};
use nu_plugin::{get_signature, EncodingType, PluginDeclaration};
use nu_protocol::Signature;
let name = working_set.get_span_contents(spans[0]);
if name != b"register" {
// Checking that the function is used with the correct name
// Maybe this is not necessary but it is a sanity check
if working_set.get_span_contents(spans[0]) != b"register" {
return (
garbage_statement(spans),
Some(ParseError::UnknownState(
@ -1110,119 +1111,132 @@ pub fn parse_register(
);
}
if let Some(decl_id) = working_set.find_decl(b"register") {
let (call, call_span, mut err) =
parse_internal_call(working_set, spans[0], &spans[1..], decl_id);
let error = {
match spans.len() {
1 => Some(ParseError::MissingPositional(
"plugin location".into(),
spans[0],
// Parsing the spans and checking that they match the register signature
// Using a parsed call makes more sense than checking for how many spans are in the call
// Also, by creating a call, it can be checked if it matches the declaration signature
let (call, call_span) = match working_set.find_decl(b"register") {
None => {
return (
garbage_statement(spans),
Some(ParseError::UnknownState(
"internal error: Register declaration not found".into(),
span(spans),
)),
2 => {
let name_expr = working_set.get_span_contents(spans[1]);
String::from_utf8(name_expr.to_vec())
.map_err(|_| ParseError::NonUtf8(spans[1]))
.and_then(|name| {
canonicalize(&name).map_err(|e| ParseError::FileNotFound(e.to_string()))
})
.and_then(|path| {
if path.exists() & path.is_file() {
get_signature(path.as_path())
.map_err(|err| {
ParseError::LabeledError(
"Error getting signatures".into(),
err.to_string(),
spans[0],
)
})
.map(|signatures| (path, signatures))
} else {
Err(ParseError::FileNotFound(format!("{:?}", path)))
}
})
.map(|(path, signatures)| {
for signature in signatures {
// create plugin command declaration (need struct impl Command)
// store declaration in working set
let plugin_decl = PluginDeclaration::new(path.clone(), signature);
)
}
Some(decl_id) => {
let (call, call_span, mut err) =
parse_internal_call(working_set, spans[0], &spans[1..], decl_id);
let decl = working_set.get_decl(decl_id);
working_set.add_decl(Box::new(plugin_decl));
}
working_set.mark_plugins_file_dirty();
})
.err()
}
3 => {
let filename_slice = working_set.get_span_contents(spans[1]);
let signature = working_set.get_span_contents(spans[2]);
String::from_utf8(filename_slice.to_vec())
.map_err(|_| ParseError::NonUtf8(spans[1]))
.and_then(|name| {
PathBuf::from_str(name.as_str()).map_err(|_| {
ParseError::InternalError(
format!("Unable to create path from string {}", name),
spans[0],
)
})
})
.and_then(|path_inner| {
serde_json::from_slice::<Signature>(signature)
.map_err(|_| {
ParseError::LabeledError(
"Signature deserialization error".into(),
"unable to deserialize signature".into(),
spans[0],
)
})
.map(|signature| (path_inner, signature))
})
.and_then(|(path, signature)| {
if path.exists() & path.is_file() {
let plugin_decl = PluginDeclaration::new(path, signature);
working_set.add_decl(Box::new(plugin_decl));
working_set.mark_plugins_file_dirty();
Ok(())
} else {
Err(ParseError::FileNotFound(format!("{:?}", path)))
}
})
.err()
}
_ => {
let span = spans[3..].iter().fold(spans[3], |acc, next| Span {
start: acc.start,
end: next.end,
});
Some(ParseError::ExtraPositional(span))
}
err = check_call(call_span, &decl.signature(), &call).or(err);
if err.is_some() {
return (
Statement::Pipeline(Pipeline::from_vec(vec![Expression {
expr: Expr::Call(call),
span: call_span,
ty: Type::Unknown,
custom_completion: None,
}])),
err,
);
}
};
err = error.or(err);
(call, call_span)
}
};
(
Statement::Pipeline(Pipeline::from_vec(vec![Expression {
expr: Expr::Call(call),
span: call_span,
ty: Type::Unknown,
custom_completion: None,
}])),
err,
)
} else {
(
garbage_statement(spans),
Some(ParseError::UnknownState(
"internal error: Register declaration not found".into(),
span(spans),
)),
)
// Extracting the required arguments from the call and keeping them together in a tuple
// The ? operator is not used because the error has to be kept to be printed in the shell
// For that reason the values are kept in a result that will be passed at the end of this call
let arguments = call
.positional
.get(0)
.map(|expr| {
let name_expr = working_set.get_span_contents(expr.span);
String::from_utf8(name_expr.to_vec())
.map_err(|_| ParseError::NonUtf8(spans[1]))
.and_then(|name| {
canonicalize(&name).map_err(|_| ParseError::FileNotFound(name, expr.span))
})
.and_then(|path| {
if path.exists() & path.is_file() {
Ok(path)
} else {
Err(ParseError::FileNotFound(format!("{:?}", path), expr.span))
}
})
})
.expect("required positional has being checked")
.and_then(|path| {
call.get_flag_expr("encoding")
.map(|expr| {
EncodingType::try_from_bytes(working_set.get_span_contents(expr.span))
.ok_or_else(|| {
ParseError::IncorrectValue(
"wrong encoding".into(),
expr.span,
"Encodings available: capnp and json".into(),
)
})
})
.expect("required named has being checked")
.map(|encoding| (path, encoding))
});
// Signature is the only optional value from the call and will be used to decide if
// the plugin is called to get the signatures or to use the given signature
let signature = call.positional.get(1).map(|expr| {
let signature = working_set.get_span_contents(expr.span);
serde_json::from_slice::<Signature>(signature).map_err(|_| {
ParseError::LabeledError(
"Signature deserialization error".into(),
"unable to deserialize signature".into(),
spans[0],
)
})
});
let error = match signature {
Some(signature) => arguments.and_then(|(path, encoding)| {
signature.map(|signature| {
let plugin_decl = PluginDeclaration::new(path, signature, encoding);
working_set.add_decl(Box::new(plugin_decl));
working_set.mark_plugins_file_dirty();
})
}),
None => arguments.and_then(|(path, encoding)| {
get_signature(path.as_path(), &encoding)
.map_err(|err| {
ParseError::LabeledError(
"Error getting signatures".into(),
err.to_string(),
spans[0],
)
})
.map(|signatures| {
for signature in signatures {
// create plugin command declaration (need struct impl Command)
// store declaration in working set
let plugin_decl =
PluginDeclaration::new(path.clone(), signature, encoding.clone());
working_set.add_decl(Box::new(plugin_decl));
}
working_set.mark_plugins_file_dirty();
})
}),
}
.err();
(
Statement::Pipeline(Pipeline::from_vec(vec![Expression {
expr: Expr::Call(call),
span: call_span,
ty: Type::Nothing,
custom_completion: None,
}])),
error,
)
}

2
crates/nu-parser/src/parser.rs
View File

@ -82,7 +82,7 @@ pub fn trim_quotes(bytes: &[u8]) -> &[u8] {
}
}
fn check_call(command: Span, sig: &Signature, call: &Call) -> Option<ParseError> {
pub fn check_call(command: Span, sig: &Signature, call: &Call) -> Option<ParseError> {
// Allow the call to pass if they pass in the help flag
if call.named.iter().any(|(n, _)| n.item == "help") {
return None;