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Add environment variable support for modules (#331)

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* Add 'expor env' dummy command

* (WIP) Abstract away module exportables as Overlay

* Switch to Overlays for use/hide

Works for decls only right now.

* Fix passing import patterns of hide to eval

* Simplify use/hide of decls

* Add ImportPattern as Expr; Add use env eval

Still no parsing of "export env" so I can't test it yet.

* Refactor export parsing; Add InternalError

* Add env var export and activation; Misc changes

Now it is possible to `use` env var that was exported from a module.

This commit also adds some new errors and other small changes.

* Add env var hiding

* Fix eval not recognizing hidden decls

Without this change, calling `hide foo`, the evaluator does not know
whether a custom command named "foo" was hidden during parsing,
therefore, it is not possible to reliably throw an error about the "foo"
name not found.

* Add use/hide/export env var tests; Cleanup; Notes

* Ignore hide env related tests for now

* Fix main branch merge mess

* Fixed multi-word export def

* Fix hiding tests on Windows

* Remove env var hiding for now
This commit is contained in:
Jakub Žádník 2021-11-16 01:16:06 +02:00 committed by GitHub
parent ab22619f4a
commit 5459d30a24
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
22 changed files with 1050 additions and 261 deletions
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41
crates/nu-command/src/core_commands/export.rs Normal file
View File

@ -0,0 +1,41 @@
use nu_engine::get_full_help;
use nu_protocol::{
ast::Call,
engine::{Command, EngineState, Stack},
IntoPipelineData, PipelineData, Signature, Value,
};
#[derive(Clone)]
pub struct ExportCommand;
impl Command for ExportCommand {
fn name(&self) -> &str {
"export"
}
fn signature(&self) -> Signature {
Signature::build("export")
}
fn usage(&self) -> &str {
"Export custom commands or environment variables from a module."
}
fn run(
&self,
engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
Ok(Value::String {
val: get_full_help(
&ExportCommand.signature(),
&ExportCommand.examples(),
engine_state,
),
span: call.head,
}
.into_pipeline_data())
}
}

2
crates/nu-command/src/core_commands/export_def.rs
View File

@ -16,7 +16,7 @@ impl Command for ExportDef {
fn signature(&self) -> nu_protocol::Signature {
Signature::build("export def")
.required("target", SyntaxShape::String, "definition name")
.required("name", SyntaxShape::String, "definition name")
.required("params", SyntaxShape::Signature, "parameters")
.required(
"block",

41
crates/nu-command/src/core_commands/export_env.rs Normal file
View File

@ -0,0 +1,41 @@
use nu_protocol::ast::Call;
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
#[derive(Clone)]
pub struct ExportEnv;
impl Command for ExportEnv {
fn name(&self) -> &str {
"export env"
}
fn usage(&self) -> &str {
"Export a block from a module that will be evaluated as an environment variable when imported."
}
fn signature(&self) -> nu_protocol::Signature {
Signature::build("export env")
.required(
"name",
SyntaxShape::String,
"name of the environment variable",
)
.required(
"block",
SyntaxShape::Block(Some(vec![])),
"body of the environment variable definition",
)
}
fn run(
&self,
_engine_state: &EngineState,
_stack: &mut Stack,
call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
//TODO: Add the env to stack
Ok(PipelineData::new(call.head))
}
}

4
crates/nu-command/src/core_commands/mod.rs
View File

@ -2,7 +2,9 @@ mod alias;
mod def;
mod do_;
mod echo;
mod export;
mod export_def;
mod export_env;
mod for_;
mod help;
mod hide;
@ -16,7 +18,9 @@ pub use alias::Alias;
pub use def::Def;
pub use do_::Do;
pub use echo::Echo;
pub use export::ExportCommand;
pub use export_def::ExportDef;
pub use export_env::ExportEnv;
pub use for_::For;
pub use help::Help;
pub use hide::Hide;

85
crates/nu-command/src/core_commands/use_.rs
View File

@ -1,6 +1,7 @@
use nu_protocol::ast::Call;
use nu_engine::eval_block;
use nu_protocol::ast::{Call, Expr, Expression, ImportPatternMember};
use nu_protocol::engine::{Command, EngineState, Stack};
use nu_protocol::{PipelineData, Signature, SyntaxShape};
use nu_protocol::{PipelineData, ShellError, Signature, Span, SyntaxShape};
#[derive(Clone)]
pub struct Use;
@ -20,11 +21,85 @@ impl Command for Use {
fn run(
&self,
_engine_state: &EngineState,
_stack: &mut Stack,
engine_state: &EngineState,
stack: &mut Stack,
call: &Call,
_input: PipelineData,
) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
) -> Result<PipelineData, ShellError> {
let import_pattern = if let Some(Expression {
expr: Expr::ImportPattern(pat),
..
}) = call.positional.get(0)
{
pat
} else {
return Err(ShellError::InternalError(
"Got something else than import pattern".into(),
));
};
if let Some(block_id) = engine_state.find_module(&import_pattern.head.name) {
let overlay = &engine_state.get_block(block_id).overlay;
let env_vars_to_use = if import_pattern.members.is_empty() {
overlay.env_vars_with_head(&import_pattern.head.name)
} else {
match &import_pattern.members[0] {
ImportPatternMember::Glob { .. } => overlay.env_vars(),
ImportPatternMember::Name { name, span } => {
let mut output = vec![];
if let Some(id) = overlay.get_env_var_id(name) {
output.push((name.clone(), id));
} else if !overlay.has_decl(name) {
return Err(ShellError::EnvVarNotFoundAtRuntime(*span));
}
output
}
ImportPatternMember::List { names } => {
let mut output = vec![];
for (name, span) in names {
if let Some(id) = overlay.get_env_var_id(name) {
output.push((name.clone(), id));
} else if !overlay.has_decl(name) {
return Err(ShellError::EnvVarNotFoundAtRuntime(*span));
}
}
output
}
}
};
for (name, block_id) in env_vars_to_use {
let name = if let Ok(s) = String::from_utf8(name.clone()) {
s
} else {
return Err(ShellError::NonUtf8(import_pattern.head.span));
};
let block = engine_state.get_block(block_id);
// TODO: Add string conversions (e.g. int to string)
// TODO: Later expand env to take all Values
let val = if let Ok(s) =
eval_block(engine_state, stack, block, PipelineData::new(call.head))?
.into_value(Span::unknown())
.as_string()
{
s
} else {
return Err(ShellError::EnvVarNotAString(import_pattern.span()));
};
stack.add_env_var(name, val);
}
} else {
return Err(ShellError::EnvVarNotFoundAtRuntime(call.positional[0].span));
}
Ok(PipelineData::new(call.head))
}
}

2
crates/nu-command/src/default_context.rs
View File

@ -39,7 +39,9 @@ pub fn create_default_context() -> EngineState {
Do,
Each,
Echo,
ExportCommand,
ExportDef,
ExportEnv,
External,
First,
For,

3
crates/nu-engine/src/eval.rs
View File

@ -225,6 +225,9 @@ pub fn eval_expression(
value.follow_cell_path(&cell_path.tail)
}
Expr::ImportPattern(_) => Ok(Value::Nothing {
span: Span::unknown(),
}),
Expr::RowCondition(_, expr) => eval_expression(engine_state, stack, expr),
Expr::Call(call) => {
// FIXME: protect this collect with ctrl-c

10
crates/nu-parser/src/errors.rs
View File

@ -81,6 +81,10 @@ pub enum ParseError {
#[diagnostic(code(nu::parser::module_not_found), url(docsrs))]
ModuleNotFound(#[label = "module not found"] Span),
#[error("Not found.")]
#[diagnostic(code(nu::parser::not_found), url(docsrs))]
NotFound(#[label = "did not find anything under this name"] Span),
#[error("Duplicate command definition within a block.")]
#[diagnostic(code(nu::parser::duplicate_command_def), url(docsrs))]
DuplicateCommandDef(#[label = "defined more than once"] Span),
@ -141,6 +145,10 @@ pub enum ParseError {
#[diagnostic(code(nu::parser::unknown_state), url(docsrs))]
UnknownState(String, #[label("{0}")] Span),
#[error("Internal error.")]
#[diagnostic(code(nu::parser::unknown_state), url(docsrs))]
InternalError(String, #[label("{0}")] Span),
#[error("Parser incomplete.")]
#[diagnostic(code(nu::parser::parser_incomplete), url(docsrs))]
IncompleteParser(#[label = "parser support missing for this expression"] Span),
@ -175,7 +183,7 @@ pub enum ParseError {
#[diagnostic(code(nu::parser::missing_import_pattern), url(docsrs))]
WrongImportPattern(#[label = "invalid import pattern structure"] Span),
#[error("Module export not found.")]
#[error("Export not found.")]
#[diagnostic(code(nu::parser::export_not_found), url(docsrs))]
ExportNotFound(#[label = "could not find imports"] Span),

23
crates/nu-parser/src/flatten.rs
View File

@ -1,4 +1,6 @@
use nu_protocol::ast::{Block, Expr, Expression, PathMember, Pipeline, Statement};
use nu_protocol::ast::{
Block, Expr, Expression, ImportPatternMember, PathMember, Pipeline, Statement,
};
use nu_protocol::{engine::StateWorkingSet, Span};
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd)]
@ -133,6 +135,25 @@ pub fn flatten_expression(
}
output
}
Expr::ImportPattern(import_pattern) => {
let mut output = vec![(import_pattern.head.span, FlatShape::String)];
for member in &import_pattern.members {
match member {
ImportPatternMember::Glob { span } => output.push((*span, FlatShape::String)),
ImportPatternMember::Name { span, .. } => {
output.push((*span, FlatShape::String))
}
ImportPatternMember::List { names } => {
for (_, span) in names {
output.push((*span, FlatShape::String));
}
}
}
}
output
}
Expr::Range(from, next, to, op) => {
let mut output = vec![];
if let Some(f) = from {

521
crates/nu-parser/src/parse_keywords.rs
View File

@ -1,8 +1,12 @@
use nu_protocol::{
ast::{Block, Call, Expr, Expression, ImportPattern, ImportPatternMember, Pipeline, Statement},
ast::{
Block, Call, Expr, Expression, ImportPattern, ImportPatternHead, ImportPatternMember,
Pipeline, Statement,
},
engine::StateWorkingSet,
span, DeclId, Span, SyntaxShape, Type, CONFIG_VARIABLE_ID,
span, Exportable, Overlay, Span, SyntaxShape, Type, CONFIG_VARIABLE_ID,
};
use std::collections::HashMap;
use std::path::Path;
#[cfg(feature = "plugin")]
@ -63,6 +67,7 @@ pub fn parse_def(
let name = working_set.get_span_contents(spans[0]);
if name == b"def" {
// TODO: Convert all 'expect("internal error: ...")' to ParseError::InternalError
let def_decl_id = working_set
.find_decl(b"def")
.expect("internal error: missing def command");
@ -113,10 +118,8 @@ pub fn parse_def(
*declaration = signature.into_block_command(block_id);
} else {
error = error.or_else(|| {
// FIXME: add a variant to ParseError that represents internal errors
Some(ParseError::UnknownState(
"Internal error: Predeclaration failed to add declaration"
.into(),
Some(ParseError::InternalError(
"Predeclaration failed to add declaration".into(),
spans[1],
))
});
@ -238,8 +241,8 @@ pub fn parse_alias(
(
garbage_statement(spans),
Some(ParseError::UnknownState(
"internal error: alias statement unparseable".into(),
Some(ParseError::InternalError(
"Alias statement unparseable".into(),
span(spans),
)),
)
@ -248,66 +251,231 @@ pub fn parse_alias(
pub fn parse_export(
working_set: &mut StateWorkingSet,
spans: &[Span],
) -> (Statement, Option<ParseError>) {
let bytes = working_set.get_span_contents(spans[0]);
) -> (Statement, Option<Exportable>, Option<ParseError>) {
let mut error = None;
if bytes == b"export" && spans.len() >= 3 {
let export_name = working_set.get_span_contents(spans[1]);
match export_name {
b"def" => {
let (stmt, err) = parse_def(working_set, &spans[1..]);
let export_def_decl_id = working_set
.find_decl(b"export def")
.expect("internal error: missing 'export def' command");
// Trying to warp the 'def' call into the 'export def' in a very clumsy way
let stmt = if let Statement::Pipeline(ref pipe) = stmt {
if !pipe.expressions.is_empty() {
if let Expr::Call(ref call) = pipe.expressions[0].expr {
let mut call = call.clone();
call.head = span(&spans[0..=1]);
call.decl_id = export_def_decl_id;
Statement::Pipeline(Pipeline::from_vec(vec![Expression {
expr: Expr::Call(call),
span: span(spans),
ty: Type::Unknown,
custom_completion: None,
}]))
} else {
stmt
}
} else {
stmt
}
} else {
stmt
};
(stmt, err)
}
_ => (
let export_span = if let Some(sp) = spans.get(0) {
if working_set.get_span_contents(*sp) != b"export" {
return (
garbage_statement(spans),
Some(ParseError::Expected(
// TODO: Fill in more as they come
"def keyword".into(),
spans[1],
None,
Some(ParseError::UnknownState(
"expected export statement".into(),
span(spans),
)),
),
);
}
*sp
} else {
(
return (
garbage_statement(spans),
None,
Some(ParseError::UnknownState(
// TODO: fill in more export types as they come
"Expected structure: export def [] {}".into(),
"got empty input for parsing export statement".into(),
span(spans),
)),
)
}
);
};
let export_decl_id = if let Some(id) = working_set.find_decl(b"export") {
id
} else {
return (
garbage_statement(spans),
None,
Some(ParseError::InternalError(
"missing export command".into(),
export_span,
)),
);
};
let mut call = Box::new(Call {
head: spans[0],
decl_id: export_decl_id,
positional: vec![],
named: vec![],
});
let exportable = if let Some(kw_span) = spans.get(1) {
let kw_name = working_set.get_span_contents(*kw_span);
match kw_name {
b"def" => {
let (stmt, err) = parse_def(working_set, &spans[1..]);
error = error.or(err);
let export_def_decl_id = if let Some(id) = working_set.find_decl(b"export def") {
id
} else {
return (
garbage_statement(spans),
None,
Some(ParseError::InternalError(
"missing 'export def' command".into(),
export_span,
)),
);
};
// Trying to warp the 'def' call into the 'export def' in a very clumsy way
if let Statement::Pipeline(ref pipe) = stmt {
if let Some(Expression {
expr: Expr::Call(ref def_call),
..
}) = pipe.expressions.get(0)
{
call = def_call.clone();
call.head = span(&spans[0..=1]);
call.decl_id = export_def_decl_id;
} else {
error = error.or_else(|| {
Some(ParseError::InternalError(
"unexpected output from parsing a definition".into(),
span(&spans[1..]),
))
});
}
} else {
error = error.or_else(|| {
Some(ParseError::InternalError(
"unexpected output from parsing a definition".into(),
span(&spans[1..]),
))
});
};
if error.is_none() {
let decl_name = working_set.get_span_contents(spans[2]);
let decl_name = trim_quotes(decl_name);
if let Some(decl_id) = working_set.find_decl(decl_name) {
Some(Exportable::Decl(decl_id))
} else {
error = error.or_else(|| {
Some(ParseError::InternalError(
"failed to find added declaration".into(),
span(&spans[1..]),
))
});
None
}
} else {
None
}
}
b"env" => {
if let Some(id) = working_set.find_decl(b"export env") {
call.decl_id = id;
} else {
return (
garbage_statement(spans),
None,
Some(ParseError::InternalError(
"missing 'export env' command".into(),
export_span,
)),
);
}
call.head = span(&spans[0..=1]);
if let Some(name_span) = spans.get(2) {
let (name_expr, err) = parse_string(working_set, *name_span);
error = error.or(err);
call.positional.push(name_expr);
if let Some(block_span) = spans.get(3) {
let (block_expr, err) = parse_block_expression(
working_set,
&SyntaxShape::Block(None),
*block_span,
);
error = error.or(err);
let exportable = if let Expression {
expr: Expr::Block(block_id),
..
} = block_expr
{
Some(Exportable::EnvVar(block_id))
} else {
error = error.or_else(|| {
Some(ParseError::InternalError(
"block was not parsed as a block".into(),
*block_span,
))
});
None
};
call.positional.push(block_expr);
exportable
} else {
let err_span = Span {
start: name_span.end,
end: name_span.end,
};
error = error.or_else(|| {
Some(ParseError::MissingPositional("block".into(), err_span))
});
None
}
} else {
let err_span = Span {
start: kw_span.end,
end: kw_span.end,
};
error = error.or_else(|| {
Some(ParseError::MissingPositional(
"environment variable name".into(),
err_span,
))
});
None
}
}
_ => {
error = error.or_else(|| {
Some(ParseError::Expected(
// TODO: Fill in more keywords as they come
"def or env keyword".into(),
spans[1],
))
});
None
}
}
} else {
error = error.or_else(|| {
Some(ParseError::MissingPositional(
"def or env keyword".into(), // TODO: keep filling more keywords as they come
Span {
start: export_span.end,
end: export_span.end,
},
))
});
None
};
(
Statement::Pipeline(Pipeline::from_vec(vec![Expression {
expr: Expr::Call(call),
span: span(spans),
ty: Type::Unknown,
custom_completion: None,
}])),
exportable,
error,
)
}
pub fn parse_module_block(
@ -327,12 +495,13 @@ pub fn parse_module_block(
error = error.or(err);
for pipeline in &output.block {
// TODO: Should we add export env predecls as well?
if pipeline.commands.len() == 1 {
parse_def_predecl(working_set, &pipeline.commands[0].parts);
}
}
let mut exports: Vec<(Vec<u8>, DeclId)> = vec![];
let mut overlay = Overlay::new();
let block: Block = output
.block
@ -349,29 +518,40 @@ pub fn parse_module_block(
(stmt, err)
}
// TODO: Currently, it is not possible to define a private env var.
// TODO: Exported env vars are usable iside the module only if correctly
// exported by the user. For example:
//
// > module foo { export env a { "2" }; export def b [] { $nu.env.a } }
//
// will work only if you call `use foo *; b` but not with `use foo; foo b`
// since in the second case, the name of the env var would be $nu.env."foo a".
b"export" => {
let (stmt, err) = parse_export(working_set, &pipeline.commands[0].parts);
let (stmt, exportable, err) =
parse_export(working_set, &pipeline.commands[0].parts);
if err.is_none() {
let decl_name =
// parts[2] is safe since it's checked in parse_export already
working_set.get_span_contents(pipeline.commands[0].parts[2]);
let name_span = pipeline.commands[0].parts[2];
let name = working_set.get_span_contents(name_span);
let name = trim_quotes(name);
let decl_name = trim_quotes(decl_name);
let decl_id = working_set
.find_decl(decl_name)
.expect("internal error: failed to find added declaration");
exports.push((decl_name.into(), decl_id));
match exportable {
Some(Exportable::Decl(decl_id)) => {
overlay.add_decl(name, decl_id);
}
Some(Exportable::EnvVar(block_id)) => {
overlay.add_env_var(name, block_id);
}
None => {} // None should always come with error from parse_export()
}
}
(stmt, err)
}
_ => (
garbage_statement(&pipeline.commands[0].parts),
Some(ParseError::Expected(
"def or export keyword".into(),
Some(ParseError::UnexpectedKeyword(
"expected def or export keyword".into(),
pipeline.commands[0].parts[0],
)),
),
@ -391,7 +571,7 @@ pub fn parse_module_block(
working_set.exit_scope();
(block.with_exports(exports), error)
(block.with_overlay(overlay), error)
}
pub fn parse_module(
@ -488,10 +668,8 @@ pub fn parse_use(
let bytes = working_set.get_span_contents(spans[0]);
if bytes == b"use" && spans.len() >= 2 {
let mut import_pattern_exprs: Vec<Expression> = vec![];
for span in spans[1..].iter() {
let (expr, err) = parse_string(working_set, *span);
import_pattern_exprs.push(expr);
let (_, err) = parse_string(working_set, *span);
error = error.or(err);
}
@ -500,16 +678,16 @@ pub fn parse_use(
let (import_pattern, err) = parse_import_pattern(working_set, &spans[1..]);
error = error.or(err);
let (import_pattern, exports) =
if let Some(block_id) = working_set.find_module(&import_pattern.head) {
let (import_pattern, overlay) =
if let Some(block_id) = working_set.find_module(&import_pattern.head.name) {
(
import_pattern,
working_set.get_block(block_id).exports.clone(),
working_set.get_block(block_id).overlay.clone(),
)
} else {
// TODO: Do not close over when loading module from file
// It could be a file
if let Ok(module_filename) = String::from_utf8(import_pattern.head) {
if let Ok(module_filename) = String::from_utf8(import_pattern.head.name) {
let module_path = Path::new(&module_filename);
let module_name = if let Some(stem) = module_path.file_stem() {
stem.to_string_lossy().to_string()
@ -533,10 +711,13 @@ pub fn parse_use(
(
ImportPattern {
head: module_name.into(),
head: ImportPatternHead {
name: module_name.into(),
span: spans[1],
},
members: import_pattern.members,
},
working_set.get_block(block_id).exports.clone(),
working_set.get_block(block_id).overlay.clone(),
)
} else {
return (
@ -552,42 +733,31 @@ pub fn parse_use(
}
};
let exports = if import_pattern.members.is_empty() {
exports
.into_iter()
.map(|(name, id)| {
let mut new_name = import_pattern.head.to_vec();
new_name.push(b' ');
new_name.extend(&name);
(new_name, id)
})
.collect()
let decls_to_use = if import_pattern.members.is_empty() {
overlay.decls_with_head(&import_pattern.head.name)
} else {
match &import_pattern.members[0] {
ImportPatternMember::Glob { .. } => exports,
ImportPatternMember::Glob { .. } => overlay.decls(),
ImportPatternMember::Name { name, span } => {
let new_exports: Vec<(Vec<u8>, usize)> =
exports.into_iter().filter(|x| &x.0 == name).collect();
let mut output = vec![];
if new_exports.is_empty() {
if let Some(id) = overlay.get_decl_id(name) {
output.push((name.clone(), id));
} else if !overlay.has_env_var(name) {
error = error.or(Some(ParseError::ExportNotFound(*span)))
}
new_exports
output
}
ImportPatternMember::List { names } => {
let mut output = vec![];
for (name, span) in names {
let mut new_exports: Vec<(Vec<u8>, usize)> = exports
.iter()
.filter_map(|x| if &x.0 == name { Some(x.clone()) } else { None })
.collect();
if new_exports.is_empty() {
error = error.or(Some(ParseError::ExportNotFound(*span)))
} else {
output.append(&mut new_exports)
if let Some(id) = overlay.get_decl_id(name) {
output.push((name.clone(), id));
} else if !overlay.has_env_var(name) {
error = error.or(Some(ParseError::ExportNotFound(*span)));
break;
}
}
@ -596,18 +766,25 @@ pub fn parse_use(
}
};
// Extend the current scope with the module's exports
working_set.activate_overlay(exports);
// Extend the current scope with the module's overlay
working_set.add_decls(decls_to_use);
// Create the Use command call
let use_decl_id = working_set
.find_decl(b"use")
.expect("internal error: missing use command");
let import_pattern_expr = Expression {
expr: Expr::ImportPattern(import_pattern),
span: span(&spans[1..]),
ty: Type::List(Box::new(Type::String)),
custom_completion: None,
};
let call = Box::new(Call {
head: spans[0],
decl_id: use_decl_id,
positional: import_pattern_exprs,
positional: vec![import_pattern_expr],
named: vec![],
});
@ -639,26 +816,37 @@ pub fn parse_hide(
let bytes = working_set.get_span_contents(spans[0]);
if bytes == b"hide" && spans.len() >= 2 {
let (name_expr, err) = parse_string(working_set, spans[1]);
error = error.or(err);
for span in spans[1..].iter() {
let (_, err) = parse_string(working_set, *span);
error = error.or(err);
}
let (import_pattern, err) = parse_import_pattern(working_set, &spans[1..]);
error = error.or(err);
let (is_module, exported_names): (bool, Vec<Vec<u8>>) =
if let Some(block_id) = working_set.find_module(&import_pattern.head) {
(
true,
working_set
.get_block(block_id)
.exports
.iter()
.map(|(name, _)| name.clone())
.collect(),
)
let (is_module, overlay) =
if let Some(block_id) = working_set.find_module(&import_pattern.head.name) {
(true, working_set.get_block(block_id).overlay.clone())
} else if import_pattern.members.is_empty() {
// The pattern head can be e.g. a function name, not just a module
(false, vec![import_pattern.head.clone()])
if let Some(id) = working_set.find_decl(&import_pattern.head.name) {
let mut decls = HashMap::new();
decls.insert(import_pattern.head.name.clone(), id);
(
false,
Overlay {
decls,
env_vars: HashMap::new(),
},
)
} else {
// TODO: Or it could be an env var
return (
garbage_statement(spans),
Some(ParseError::ModuleNotFound(spans[1])),
);
}
} else {
return (
garbage_statement(spans),
@ -667,68 +855,38 @@ pub fn parse_hide(
};
// This kind of inverts the import pattern matching found in parse_use()
let names_to_hide = if import_pattern.members.is_empty() {
let decls_to_hide = if import_pattern.members.is_empty() {
if is_module {
exported_names
.into_iter()
.map(|name| {
let mut new_name = import_pattern.head.to_vec();
new_name.push(b' ');
new_name.extend(&name);
new_name
})
.collect()
overlay.decls_with_head(&import_pattern.head.name)
} else {
exported_names
overlay.decls()
}
} else {
match &import_pattern.members[0] {
ImportPatternMember::Glob { .. } => exported_names
.into_iter()
.map(|name| {
let mut new_name = import_pattern.head.to_vec();
new_name.push(b' ');
new_name.extend(&name);
new_name
})
.collect(),
ImportPatternMember::Glob { .. } => {
overlay.decls_with_head(&import_pattern.head.name)
}
ImportPatternMember::Name { name, span } => {
let new_exports: Vec<Vec<u8>> = exported_names
.into_iter()
.filter(|n| n == name)
.map(|n| {
let mut new_name = import_pattern.head.to_vec();
new_name.push(b' ');
new_name.extend(&n);
new_name
})
.collect();
let mut output = vec![];
if new_exports.is_empty() {
error = error.or(Some(ParseError::ExportNotFound(*span)))
if let Some(item) = overlay.decl_with_head(name, &import_pattern.head.name) {
output.push(item);
} else if !overlay.has_env_var(name) {
error = error.or(Some(ParseError::ExportNotFound(*span)));
}
new_exports
output
}
ImportPatternMember::List { names } => {
let mut output = vec![];
for (name, span) in names {
let mut new_exports: Vec<Vec<u8>> = exported_names
.iter()
.filter_map(|n| if n == name { Some(n.clone()) } else { None })
.map(|n| {
let mut new_name = import_pattern.head.to_vec();
new_name.push(b' ');
new_name.extend(n);
new_name
})
.collect();
if new_exports.is_empty() {
error = error.or(Some(ParseError::ExportNotFound(*span)))
} else {
output.append(&mut new_exports)
if let Some(item) = overlay.decl_with_head(name, &import_pattern.head.name)
{
output.push(item);
} else if !overlay.has_env_var(name) {
error = error.or(Some(ParseError::ExportNotFound(*span)));
break;
}
}
@ -737,23 +895,26 @@ pub fn parse_hide(
}
};
for name in names_to_hide {
// TODO: `use spam; use spam foo; hide foo` will hide both `foo` and `spam foo` since
// they point to the same DeclId. Do we want to keep it that way?
if working_set.hide_decl(&name).is_none() {
error = error.or_else(|| Some(ParseError::UnknownCommand(spans[1])));
}
}
// TODO: `use spam; use spam foo; hide foo` will hide both `foo` and `spam foo` since
// they point to the same DeclId. Do we want to keep it that way?
working_set.hide_decls(&decls_to_hide);
// Create the Hide command call
let hide_decl_id = working_set
.find_decl(b"hide")
.expect("internal error: missing hide command");
let import_pattern_expr = Expression {
expr: Expr::ImportPattern(import_pattern),
span: span(&spans[1..]),
ty: Type::List(Box::new(Type::String)),
custom_completion: None,
};
let call = Box::new(Call {
head: spans[0],
decl_id: hide_decl_id,
positional: vec![name_expr],
positional: vec![import_pattern_expr],
named: vec![],
});

43
crates/nu-parser/src/parser.rs
View File

@ -7,8 +7,9 @@ use crate::{
use nu_protocol::{
ast::{
Block, Call, CellPath, Expr, Expression, FullCellPath, ImportPattern, ImportPatternMember,
Operator, PathMember, Pipeline, RangeInclusion, RangeOperator, Statement,
Block, Call, CellPath, Expr, Expression, FullCellPath, ImportPattern, ImportPatternHead,
ImportPatternMember, Operator, PathMember, Pipeline, RangeInclusion, RangeOperator,
Statement,
},
engine::StateWorkingSet,
span, Flag, PositionalArg, Signature, Span, Spanned, SyntaxShape, Type, Unit, VarId,
@ -1788,12 +1789,18 @@ pub fn parse_import_pattern(
) -> (ImportPattern, Option<ParseError>) {
let mut error = None;
let head = if let Some(head_span) = spans.get(0) {
working_set.get_span_contents(*head_span).to_vec()
let (head, head_span) = if let Some(head_span) = spans.get(0) {
(
working_set.get_span_contents(*head_span).to_vec(),
head_span,
)
} else {
return (
ImportPattern {
head: vec![],
head: ImportPatternHead {
name: vec![],
span: Span::unknown(),
},
members: vec![],
},
Some(ParseError::WrongImportPattern(span(spans))),
@ -1806,7 +1813,10 @@ pub fn parse_import_pattern(
if tail == b"*" {
(
ImportPattern {
head,
head: ImportPatternHead {
name: head,
span: *head_span,
},
members: vec![ImportPatternMember::Glob { span: *tail_span }],
},
error,
@ -1830,7 +1840,10 @@ pub fn parse_import_pattern(
(
ImportPattern {
head,
head: ImportPatternHead {
name: head,
span: *head_span,
},
members: vec![ImportPatternMember::List { names: output }],
},
error,
@ -1838,7 +1851,10 @@ pub fn parse_import_pattern(
}
_ => (
ImportPattern {
head,
head: ImportPatternHead {
name: head,
span: *head_span,
},
members: vec![],
},
Some(ParseError::ExportNotFound(result.span)),
@ -1848,7 +1864,10 @@ pub fn parse_import_pattern(
let tail = trim_quotes(tail);
(
ImportPattern {
head,
head: ImportPatternHead {
name: head,
span: *head_span,
},
members: vec![ImportPatternMember::Name {
name: tail.to_vec(),
span: *tail_span,
@ -1860,7 +1879,10 @@ pub fn parse_import_pattern(
} else {
(
ImportPattern {
head,
head: ImportPatternHead {
name: head,
span: *head_span,
},
members: vec![],
},
None,
@ -3419,6 +3441,7 @@ pub fn find_captures_in_expr(
let result = find_captures_in_expr(working_set, &cell_path.head, seen);
output.extend(&result);
}
Expr::ImportPattern(_) => {}
Expr::Garbage => {}
Expr::GlobPattern(_) => {}
Expr::Int(_) => {}

12
crates/nu-protocol/src/ast/block.rs
View File

@ -1,6 +1,6 @@
use std::ops::{Index, IndexMut};
use crate::{DeclId, Signature, VarId};
use crate::{Overlay, Signature, VarId};
use super::Statement;
@ -8,7 +8,7 @@ use super::Statement;
pub struct Block {
pub signature: Box<Signature>,
pub stmts: Vec<Statement>,
pub exports: Vec<(Vec<u8>, DeclId)>, // Assuming just defs for now
pub overlay: Overlay,
pub captures: Vec<VarId>,
}
@ -47,16 +47,16 @@ impl Block {
Self {
signature: Box::new(Signature::new("")),
stmts: vec![],
exports: vec![],
overlay: Overlay::new(),
captures: vec![],
}
}
pub fn with_exports(self, exports: Vec<(Vec<u8>, DeclId)>) -> Self {
pub fn with_overlay(self, overlay: Overlay) -> Self {
Self {
signature: self.signature,
stmts: self.stmts,
exports,
overlay,
captures: self.captures,
}
}
@ -70,7 +70,7 @@ where
Self {
signature: Box::new(Signature::new("")),
stmts: stmts.collect(),
exports: vec![],
overlay: Overlay::new(),
captures: vec![],
}
}

3
crates/nu-protocol/src/ast/expr.rs
View File

@ -1,5 +1,5 @@
use super::{Call, CellPath, Expression, FullCellPath, Operator, RangeOperator};
use crate::{BlockId, Signature, Span, Spanned, Unit, VarId};
use crate::{ast::ImportPattern, BlockId, Signature, Span, Spanned, Unit, VarId};
#[derive(Debug, Clone)]
pub enum Expr {
@ -31,6 +31,7 @@ pub enum Expr {
String(String),
CellPath(CellPath),
FullCellPath(Box<FullCellPath>),
ImportPattern(ImportPattern),
Signature(Box<Signature>),
Garbage,
}

2
crates/nu-protocol/src/ast/expression.rs
View File

@ -131,6 +131,7 @@ impl Expression {
}
false
}
Expr::ImportPattern(_) => false,
Expr::Filepath(_) => false,
Expr::Float(_) => false,
Expr::FullCellPath(full_cell_path) => {
@ -282,6 +283,7 @@ impl Expression {
.head
.replace_in_variable(working_set, new_var_id);
}
Expr::ImportPattern(_) => {}
Expr::Garbage => {}
Expr::GlobPattern(_) => {}
Expr::Int(_) => {}

30
crates/nu-protocol/src/ast/import_pattern.rs
View File

@ -1,4 +1,4 @@
use crate::Span;
use crate::{span, Span};
#[derive(Debug, Clone)]
pub enum ImportPatternMember {
@ -7,8 +7,34 @@ pub enum ImportPatternMember {
List { names: Vec<(Vec<u8>, Span)> },
}
#[derive(Debug, Clone)]
pub struct ImportPatternHead {
pub name: Vec<u8>,
pub span: Span,
}
#[derive(Debug, Clone)]
pub struct ImportPattern {
pub head: Vec<u8>,
pub head: ImportPatternHead,
pub members: Vec<ImportPatternMember>,
}
impl ImportPattern {
pub fn span(&self) -> Span {
let mut spans = vec![self.head.span];
for member in &self.members {
match member {
ImportPatternMember::Glob { span } => spans.push(*span),
ImportPatternMember::Name { name: _, span } => spans.push(*span),
ImportPatternMember::List { names } => {
for (_, span) in names {
spans.push(*span);
}
}
}
}
span(&spans)
}
}

98
crates/nu-protocol/src/engine/engine_state.rs
View File

@ -7,41 +7,41 @@ use std::{
};
// Tells whether a decl etc. is visible or not
// TODO: When adding new exportables (env vars, aliases, etc.), parametrize the ID type with generics
#[derive(Debug, Clone)]
struct Visibility {
ids: HashMap<DeclId, bool>,
decl_ids: HashMap<DeclId, bool>,
}
impl Visibility {
fn new() -> Self {
Visibility {
ids: HashMap::new(),
decl_ids: HashMap::new(),
}
}
fn is_id_visible(&self, id: &DeclId) -> bool {
*self.ids.get(id).unwrap_or(&true) // by default it's visible
fn is_decl_id_visible(&self, decl_id: &DeclId) -> bool {
*self.decl_ids.get(decl_id).unwrap_or(&true) // by default it's visible
}
fn hide_id(&mut self, id: &DeclId) {
self.ids.insert(*id, false);
fn hide_decl_id(&mut self, decl_id: &DeclId) {
self.decl_ids.insert(*decl_id, false);
}
fn use_id(&mut self, id: &DeclId) {
self.ids.insert(*id, true);
fn use_decl_id(&mut self, decl_id: &DeclId) {
self.decl_ids.insert(*decl_id, true);
}
fn merge_with(&mut self, other: Visibility) {
// overwrite own values with the other
self.ids.extend(other.ids);
self.decl_ids.extend(other.decl_ids);
// self.env_var_ids.extend(other.env_var_ids);
}
fn append(&mut self, other: &Visibility) {
// take new values from other but keep own values
for (id, visible) in other.ids.iter() {
if !self.ids.contains_key(id) {
self.ids.insert(*id, *visible);
for (decl_id, visible) in other.decl_ids.iter() {
if !self.decl_ids.contains_key(decl_id) {
self.decl_ids.insert(*decl_id, *visible);
}
}
}
@ -53,6 +53,7 @@ pub struct ScopeFrame {
predecls: HashMap<Vec<u8>, DeclId>, // temporary storage for predeclarations
pub decls: HashMap<Vec<u8>, DeclId>,
pub aliases: HashMap<Vec<u8>, Vec<Span>>,
pub env_vars: HashMap<Vec<u8>, BlockId>,
pub modules: HashMap<Vec<u8>, BlockId>,
visibility: Visibility,
}
@ -64,6 +65,7 @@ impl ScopeFrame {
predecls: HashMap::new(),
decls: HashMap::new(),
aliases: HashMap::new(),
env_vars: HashMap::new(),
modules: HashMap::new(),
visibility: Visibility::new(),
}
@ -232,7 +234,7 @@ impl EngineState {
visibility.append(&scope.visibility);
if let Some(decl_id) = scope.decls.get(name) {
if visibility.is_id_visible(decl_id) {
if visibility.is_decl_id_visible(decl_id) {
return Some(*decl_id);
}
}
@ -241,6 +243,16 @@ impl EngineState {
None
}
pub fn find_module(&self, name: &[u8]) -> Option<BlockId> {
for scope in self.scope.iter().rev() {
if let Some(block_id) = scope.modules.get(name) {
return Some(*block_id);
}
}
None
}
pub fn find_commands_by_prefix(&self, name: &[u8]) -> Vec<Vec<u8>> {
let mut output = vec![];
@ -457,11 +469,24 @@ impl<'a> StateWorkingSet<'a> {
.expect("internal error: missing required scope frame");
scope_frame.decls.insert(name, decl_id);
scope_frame.visibility.use_id(&decl_id);
scope_frame.visibility.use_decl_id(&decl_id);
decl_id
}
pub fn add_decls(&mut self, decls: Vec<(Vec<u8>, DeclId)>) {
let scope_frame = self
.delta
.scope
.last_mut()
.expect("internal error: missing required scope frame");
for (name, decl_id) in decls {
scope_frame.decls.insert(name, decl_id);
scope_frame.visibility.use_decl_id(&decl_id);
}
}
pub fn add_predecl(&mut self, decl: Box<dyn Command>) -> Option<DeclId> {
let name = decl.name().as_bytes().to_vec();
@ -486,7 +511,7 @@ impl<'a> StateWorkingSet<'a> {
if let Some(decl_id) = scope_frame.predecls.remove(name) {
scope_frame.decls.insert(name.into(), decl_id);
scope_frame.visibility.use_id(&decl_id);
scope_frame.visibility.use_decl_id(&decl_id);
return Some(decl_id);
}
@ -517,9 +542,9 @@ impl<'a> StateWorkingSet<'a> {
visibility.append(&scope.visibility);
if let Some(decl_id) = scope.decls.get(name) {
if visibility.is_id_visible(decl_id) {
if visibility.is_decl_id_visible(decl_id) {
// Hide decl only if it's not already hidden
last_scope_frame.visibility.hide_id(decl_id);
last_scope_frame.visibility.hide_decl_id(decl_id);
return Some(*decl_id);
}
}
@ -528,12 +553,34 @@ impl<'a> StateWorkingSet<'a> {
None
}
pub fn hide_decls(&mut self, decls: &[(Vec<u8>, DeclId)]) {
for decl in decls.iter() {
self.hide_decl(&decl.0); // let's assume no errors
}
}
pub fn add_block(&mut self, block: Block) -> BlockId {
self.delta.blocks.push(block);
self.num_blocks() - 1
}
pub fn add_env_var(&mut self, name_span: Span, block: Block) -> BlockId {
self.delta.blocks.push(block);
let block_id = self.num_blocks() - 1;
let name = self.get_span_contents(name_span).to_vec();
let scope_frame = self
.delta
.scope
.last_mut()
.expect("internal error: missing required scope frame");
scope_frame.env_vars.insert(name, block_id);
block_id
}
pub fn add_module(&mut self, name: &str, block: Block) -> BlockId {
let name = name.as_bytes().to_vec();
@ -551,19 +598,6 @@ impl<'a> StateWorkingSet<'a> {
block_id
}
pub fn activate_overlay(&mut self, overlay: Vec<(Vec<u8>, DeclId)>) {
let scope_frame = self
.delta
.scope
.last_mut()
.expect("internal error: missing required scope frame");
for (name, decl_id) in overlay {
scope_frame.decls.insert(name, decl_id);
scope_frame.visibility.use_id(&decl_id);
}
}
pub fn next_span_start(&self) -> usize {
let permanent_span_start = self.permanent_state.next_span_start();
@ -665,7 +699,7 @@ impl<'a> StateWorkingSet<'a> {
visibility.append(&scope.visibility);
if let Some(decl_id) = scope.decls.get(name) {
if visibility.is_id_visible(decl_id) {
if visibility.is_decl_id_visible(decl_id) {
return Some(*decl_id);
}
}

5
crates/nu-protocol/src/engine/stack.rs
View File

@ -38,6 +38,7 @@ impl Stack {
env_vars: HashMap::new(),
}
}
pub fn get_var(&self, var_id: VarId) -> Result<Value, ShellError> {
if let Some(v) = self.vars.get(&var_id) {
return Ok(v.clone());
@ -87,6 +88,10 @@ impl Stack {
None
}
pub fn remove_env_var(&mut self, name: &str) -> Option<String> {
self.env_vars.remove(name)
}
pub fn get_config(&self) -> Result<Config, ShellError> {
let config = self.get_var(CONFIG_VARIABLE_ID);

6
crates/nu-protocol/src/exportable.rs Normal file
View File

@ -0,0 +1,6 @@
use crate::{BlockId, DeclId};
pub enum Exportable {
Decl(DeclId),
EnvVar(BlockId),
}

4
crates/nu-protocol/src/lib.rs
View File

@ -2,7 +2,9 @@ pub mod ast;
mod config;
pub mod engine;
mod example;
mod exportable;
mod id;
mod overlay;
mod pipeline_data;
mod shell_error;
mod signature;
@ -15,7 +17,9 @@ pub use value::Value;
pub use config::*;
pub use engine::{CONFIG_VARIABLE_ID, IN_VARIABLE_ID, NU_VARIABLE_ID, SCOPE_VARIABLE_ID};
pub use example::*;
pub use exportable::*;
pub use id::*;
pub use overlay::*;
pub use pipeline_data::*;
pub use shell_error::*;
pub use signature::*;

121
crates/nu-protocol/src/overlay.rs Normal file
View File

@ -0,0 +1,121 @@
use crate::{BlockId, DeclId};
use std::collections::HashMap;
// TODO: Move the import pattern matching logic here from use/hide commands and
// parse_use/parse_hide
/// Collection of definitions that can be exported from a module
#[derive(Debug, Clone)]
pub struct Overlay {
pub decls: HashMap<Vec<u8>, DeclId>,
pub env_vars: HashMap<Vec<u8>, BlockId>,
}
impl Overlay {
pub fn new() -> Self {
Overlay {
decls: HashMap::new(),
env_vars: HashMap::new(),
}
}
pub fn add_decl(&mut self, name: &[u8], decl_id: DeclId) -> Option<DeclId> {
self.decls.insert(name.to_vec(), decl_id)
}
pub fn add_env_var(&mut self, name: &[u8], block_id: BlockId) -> Option<BlockId> {
self.env_vars.insert(name.to_vec(), block_id)
}
pub fn extend(&mut self, other: &Overlay) {
self.decls.extend(other.decls.clone());
self.env_vars.extend(other.env_vars.clone());
}
pub fn is_empty(&self) -> bool {
self.decls.is_empty() && self.env_vars.is_empty()
}
pub fn get_decl_id(&self, name: &[u8]) -> Option<DeclId> {
self.decls.get(name).copied()
}
pub fn has_decl(&self, name: &[u8]) -> bool {
self.decls.contains_key(name)
}
pub fn decl_with_head(&self, name: &[u8], head: &[u8]) -> Option<(Vec<u8>, DeclId)> {
if let Some(id) = self.get_decl_id(name) {
let mut new_name = head.to_vec();
new_name.push(b' ');
new_name.extend(name);
Some((new_name, id))
} else {
None
}
}
pub fn decls_with_head(&self, head: &[u8]) -> Vec<(Vec<u8>, DeclId)> {
self.decls
.iter()
.map(|(name, id)| {
let mut new_name = head.to_vec();
new_name.push(b' ');
new_name.extend(name);
(new_name, *id)
})
.collect()
}
pub fn decls(&self) -> Vec<(Vec<u8>, DeclId)> {
self.decls
.iter()
.map(|(name, id)| (name.clone(), *id))
.collect()
}
pub fn get_env_var_id(&self, name: &[u8]) -> Option<BlockId> {
self.env_vars.get(name).copied()
}
pub fn has_env_var(&self, name: &[u8]) -> bool {
self.env_vars.contains_key(name)
}
pub fn env_var_with_head(&self, name: &[u8], head: &[u8]) -> Option<(Vec<u8>, BlockId)> {
if let Some(id) = self.get_env_var_id(name) {
let mut new_name = head.to_vec();
new_name.push(b' ');
new_name.extend(name);
Some((new_name, id))
} else {
None
}
}
pub fn env_vars_with_head(&self, head: &[u8]) -> Vec<(Vec<u8>, BlockId)> {
self.env_vars
.iter()
.map(|(name, id)| {
let mut new_name = head.to_vec();
new_name.push(b' ');
new_name.extend(name);
(new_name, *id)
})
.collect()
}
pub fn env_vars(&self) -> Vec<(Vec<u8>, BlockId)> {
self.env_vars
.iter()
.map(|(name, id)| (name.clone(), *id))
.collect()
}
}
impl Default for Overlay {
fn default() -> Self {
Self::new()
}
}

16
crates/nu-protocol/src/shell_error.rs
View File

@ -84,6 +84,18 @@ pub enum ShellError {
#[diagnostic(code(nu::shell::variable_not_found), url(docsrs))]
VariableNotFoundAtRuntime(#[label = "variable not found"] Span),
#[error("Environment variable not found")]
#[diagnostic(code(nu::shell::variable_not_found), url(docsrs))]
EnvVarNotFoundAtRuntime(#[label = "environment variable not found"] Span),
#[error("Environment variable is not a string")]
#[diagnostic(code(nu::shell::variable_not_found), url(docsrs))]
EnvVarNotAString(#[label = "does not evaluate to a string"] Span),
#[error("Not found.")]
#[diagnostic(code(nu::parser::not_found), url(docsrs))]
NotFound(#[label = "did not find anything under this name"] Span),
#[error("Can't convert to {0}.")]
#[diagnostic(code(nu::shell::cant_convert), url(docsrs))]
CantConvert(String, String, #[label("can't convert {1} to {0}")] Span),
@ -190,6 +202,10 @@ pub enum ShellError {
#[error("Name not found")]
#[diagnostic(code(nu::shell::name_not_found), url(docsrs))]
DidYouMean(String, #[label("did you mean '{0}'?")] Span),
#[error("Non-UTF8 string.")]
#[diagnostic(code(nu::parser::non_utf8), url(docsrs))]
NonUtf8(#[label = "non-UTF8 string"] Span),
}
impl From<std::io::Error> for ShellError {

239
src/tests.rs
View File

@ -395,7 +395,7 @@ fn better_block_types() -> TestResult {
}
#[test]
fn module_imports_1() -> TestResult {
fn module_def_imports_1() -> TestResult {
run_test(
r#"module foo { export def a [] { 1 }; def b [] { 2 } }; use foo; foo a"#,
"1",
@ -403,7 +403,7 @@ fn module_imports_1() -> TestResult {
}
#[test]
fn module_imports_2() -> TestResult {
fn module_def_imports_2() -> TestResult {
run_test(
r#"module foo { export def a [] { 1 }; def b [] { 2 } }; use foo a; a"#,
"1",
@ -411,7 +411,7 @@ fn module_imports_2() -> TestResult {
}
#[test]
fn module_imports_3() -> TestResult {
fn module_def_imports_3() -> TestResult {
run_test(
r#"module foo { export def a [] { 1 }; export def b [] { 2 } }; use foo *; b"#,
"2",
@ -419,7 +419,7 @@ fn module_imports_3() -> TestResult {
}
#[test]
fn module_imports_4() -> TestResult {
fn module_def_imports_4() -> TestResult {
fail_test(
r#"module foo { export def a [] { 1 }; export def b [] { 2 } }; use foo c"#,
"not find import",
@ -427,35 +427,101 @@ fn module_imports_4() -> TestResult {
}
#[test]
fn module_imports_5() -> TestResult {
fn module_def_imports_5() -> TestResult {
run_test(
r#"module foo { export def a [] { 1 }; def b [] { 2 }; export def c [] { 3 } }; use foo [a, c]; c"#,
r#"module foo { export def a [] { 1 }; def b [] { '2' }; export def c [] { '3' } }; use foo [a, c]; c"#,
"3",
)
}
#[test]
fn module_import_uses_internal_command() -> TestResult {
fn module_env_imports_1() -> TestResult {
run_test(
r#"module foo { export env a { '1' } }; use foo; $nu.env.'foo a'"#,
"1",
)
}
#[test]
fn module_env_imports_2() -> TestResult {
run_test(
r#"module foo { export env a { '1' } }; use foo a; $nu.env.a"#,
"1",
)
}
#[test]
fn module_env_imports_3() -> TestResult {
run_test(
r#"module foo { export env a { '1' }; export env b { '2' } }; use foo *; $nu.env.b"#,
"2",
)
}
#[test]
fn module_env_imports_4() -> TestResult {
fail_test(
r#"module foo { export env a { '1' }; export env b { '2' } }; use foo c"#,
"not find import",
)
}
#[test]
fn module_env_imports_5() -> TestResult {
run_test(
r#"module foo { export env a { '1' }; export env b { '2' }; export env c { '3' } }; use foo [a, c]; $nu.env.c"#,
"3",
)
}
#[test]
fn module_def_import_uses_internal_command() -> TestResult {
run_test(
r#"module foo { def b [] { 2 }; export def a [] { b } }; use foo; foo a"#,
"2",
)
}
#[test]
fn module_env_import_uses_internal_command() -> TestResult {
run_test(
r#"module foo { def b [] { "2" }; export env a { b } }; use foo; $nu.env.'foo a'"#,
"2",
)
}
// TODO: Test the use/hide tests also as separate lines in REPL (i.e., with merging the delta in between)
#[test]
fn hides_def() -> TestResult {
fail_test(r#"def foo [] { "foo" }; hide foo; foo"#, not_found_msg())
}
#[ignore]
fn hides_env() -> TestResult {
fail_test(
r#"let-env foo = "foo"; hide foo; $nu.env.foo"#,
"did you mean",
)
}
#[test]
fn hides_def_then_redefines() -> TestResult {
// this one should fail because of predecl -- cannot have more defs with the same name in a
// block
fail_test(
r#"def foo [] { "foo" }; hide foo; def foo [] { "bar" }; foo"#,
"defined more than once",
)
}
#[ignore]
fn hides_env_then_redefines() -> TestResult {
run_test(
r#"let-env foo = "foo"; hide foo; let-env foo = "bar"; $nu.env.foo"#,
"bar",
)
}
#[test]
fn hides_def_in_scope_1() -> TestResult {
fail_test(
@ -488,40 +554,96 @@ fn hides_def_in_scope_4() -> TestResult {
)
}
#[test]
fn hide_twice_not_allowed() -> TestResult {
#[ignore]
fn hides_env_in_scope_1() -> TestResult {
fail_test(
r#"def foo [] { "foo" }; hide foo; hide foo"#,
"unknown command",
r#"let-env foo = "foo"; do { hide foo; $nu.env.foo }"#,
"did you mean",
)
}
#[ignore]
fn hides_env_in_scope_2() -> TestResult {
// TODO: Revisit this -- 'hide foo' should restore the env, not hide it completely
run_test(
r#"let-env foo = "foo"; do { let-env foo = "bar"; hide foo; $nu.env.foo }"#,
"foo",
)
}
#[ignore]
fn hides_env_in_scope_3() -> TestResult {
fail_test(
r#"let-env foo = "foo"; do { hide foo; let-env foo = "bar"; hide foo; $nu.env.foo }"#,
"did you mean",
)
}
#[ignore]
fn hides_env_in_scope_4() -> TestResult {
// TODO: Revisit this -- 'hide foo' should restore the env, not hide it completely
fail_test(
r#"let-env foo = "foo"; do { let-env foo = "bar"; hide foo; hide foo; $nu.env.foo }"#,
"did you mean",
)
}
#[test]
fn hides_import_1() -> TestResult {
fn hide_def_twice_not_allowed() -> TestResult {
fail_test(r#"def foo [] { "foo" }; hide foo; hide foo"#, "not found")
}
#[ignore]
fn hide_env_twice_not_allowed() -> TestResult {
fail_test(r#"let-env foo = "foo"; hide foo; hide foo"#, "did not find")
}
#[ignore]
fn hides_def_runs_env() -> TestResult {
// TODO: We need some precedence system to handle this. Currently, 'hide foo' hides both the
// def and env var.
run_test(
r#"let-env foo = "bar"; def foo [] { "foo" }; hide foo; $nu.env.foo"#,
"bar",
)
}
#[ignore]
fn hides_def_and_env() -> TestResult {
// TODO: We need some precedence system to handle this. Currently, 'hide foo' hides both the
// def and env var.
fail_test(
r#"module spam { export def foo [] { "foo" } }; use spam; hide spam foo; foo"#,
r#"let-env foo = "bar"; def foo [] { "foo" }; hide foo; hide foo; $nu.env.foo"#,
not_found_msg(),
)
}
#[test]
fn hides_import_2() -> TestResult {
fn hides_def_import_1() -> TestResult {
fail_test(
r#"module spam { export def foo [] { "foo" } }; use spam; hide spam *; foo"#,
r#"module spam { export def foo [] { "foo" } }; use spam; hide spam foo; spam foo"#,
not_found_msg(),
)
}
#[test]
fn hides_import_3() -> TestResult {
fn hides_def_import_2() -> TestResult {
fail_test(
r#"module spam { export def foo [] { "foo" } }; use spam; hide spam [foo]; foo"#,
r#"module spam { export def foo [] { "foo" } }; use spam; hide spam *; spam foo"#,
not_found_msg(),
)
}
#[test]
fn hides_import_4() -> TestResult {
fn hides_def_import_3() -> TestResult {
fail_test(
r#"module spam { export def foo [] { "foo" } }; use spam; hide spam [foo]; spam foo"#,
not_found_msg(),
)
}
#[test]
fn hides_def_import_4() -> TestResult {
fail_test(
r#"module spam { export def foo [] { "foo" } }; use spam foo; hide foo; foo"#,
not_found_msg(),
@ -529,7 +651,7 @@ fn hides_import_4() -> TestResult {
}
#[test]
fn hides_import_5() -> TestResult {
fn hides_def_import_5() -> TestResult {
fail_test(
r#"module spam { export def foo [] { "foo" } }; use spam *; hide foo; foo"#,
not_found_msg(),
@ -537,13 +659,61 @@ fn hides_import_5() -> TestResult {
}
#[test]
fn hides_import_6() -> TestResult {
fn hides_def_import_6() -> TestResult {
fail_test(
r#"module spam { export def foo [] { "foo" } }; use spam; hide spam; foo"#,
r#"module spam { export def foo [] { "foo" } }; use spam; hide spam; spam foo"#,
not_found_msg(),
)
}
#[ignore]
fn hides_env_import_1() -> TestResult {
fail_test(
r#"module spam { export env foo { "foo" } }; use spam; hide spam foo; $nu.env.'spam foo'"#,
"did you mean",
)
}
#[ignore]
fn hides_env_import_2() -> TestResult {
fail_test(
r#"module spam { export env foo { "foo" } }; use spam; hide spam *; $nu.env.'spam foo'"#,
"did you mean",
)
}
#[ignore]
fn hides_env_import_3() -> TestResult {
fail_test(
r#"module spam { export env foo { "foo" }; } use spam; hide spam [foo]; $nu.env.'spam foo'"#,
"did you mean",
)
}
#[ignore]
fn hides_env_import_4() -> TestResult {
fail_test(
r#"module spam { export env foo { "foo" } }; use spam foo; hide foo; $nu.env.foo"#,
"did you mean",
)
}
#[ignore]
fn hides_env_import_5() -> TestResult {
fail_test(
r#"module spam { export env foo { "foo" } }; use spam *; hide foo; $nu.env.foo"#,
"did you mean",
)
}
#[ignore]
fn hides_env_import_6() -> TestResult {
fail_test(
r#"module spam { export env foo { "foo" } }; use spam; hide spam; $nu.env.'spam foo'"#,
"did you mean",
)
}
#[test]
fn def_twice_should_fail() -> TestResult {
fail_test(
@ -553,13 +723,21 @@ fn def_twice_should_fail() -> TestResult {
}
#[test]
fn use_import_after_hide() -> TestResult {
fn use_def_import_after_hide() -> TestResult {
run_test(
r#"module spam { export def foo [] { "foo" } }; use spam foo; hide foo; use spam foo; foo"#,
"foo",
)
}
#[ignore]
fn use_env_import_after_hide() -> TestResult {
run_test(
r#"module spam { export env foo { "foo" } }; use spam foo; hide foo; use spam foo; $nu.env.foo"#,
"foo",
)
}
#[test]
fn hide_shadowed_decl() -> TestResult {
run_test(
@ -568,6 +746,15 @@ fn hide_shadowed_decl() -> TestResult {
)
}
#[ignore]
fn hide_shadowed_env() -> TestResult {
// TODO: waiting for a fix
run_test(
r#"module spam { export env foo { "bar" } }; let-env foo = "foo"; do { use spam foo; hide foo; $nu.env.foo }"#,
"foo",
)
}
#[test]
fn hides_all_decls_within_scope() -> TestResult {
fail_test(
@ -576,6 +763,14 @@ fn hides_all_decls_within_scope() -> TestResult {
)
}
#[ignore]
fn hides_all_envs_within_scope() -> TestResult {
fail_test(
r#"module spam { export env foo { "bar" } }; let-env foo = "foo"; use spam foo; hide foo; $nu.env.foo"#,
"did you mean",
)
}
#[test]
fn from_json_1() -> TestResult {
run_test(r#"('{"name": "Fred"}' | from json).name"#, "Fred")