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slint/tools/lsp/language.rs
Tobias Hunger 0ff8e2cdb6 compiler: Rework path handling 
Add some code to do platform-independent path processing.

This is necessary aas WASM does e.g. not have any absolute paths and
such and the compiler tended to produce wrong results in that case.

Side-effect: We no longer need to depend on `dunce`
2023-10-10 20:04:47 +02:00

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// Copyright © SixtyFPS GmbH <info@slint.dev>
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-1.1 OR LicenseRef-Slint-commercial
// cSpell: ignore descr rfind unindented
mod completion;
mod goto;
mod properties;
mod semantic_tokens;
#[cfg(test)]
mod test;
use crate::common::{PreviewApi, Result};
use crate::language::properties::find_element_indent;
use crate::util::{map_node, map_range, map_token, to_lsp_diag};
#[cfg(target_arch = "wasm32")]
use crate::wasm_prelude::*;
use i_slint_compiler::object_tree::ElementRc;
use i_slint_compiler::parser::{syntax_nodes, NodeOrToken, SyntaxKind, SyntaxNode, SyntaxToken};
use i_slint_compiler::pathutils::clean_path;
use i_slint_compiler::CompilerConfiguration;
use i_slint_compiler::{diagnostics::BuildDiagnostics, langtype::Type};
use i_slint_compiler::{typeloader::TypeLoader, typeregister::TypeRegister};
use lsp_types::request::{
CodeActionRequest, CodeLensRequest, ColorPresentationRequest, Completion, DocumentColor,
DocumentHighlightRequest, DocumentSymbolRequest, ExecuteCommand, GotoDefinition, HoverRequest,
PrepareRenameRequest, Rename, SemanticTokensFullRequest,
};
use lsp_types::{
ClientCapabilities, CodeActionOrCommand, CodeActionProviderCapability, CodeLens,
CodeLensOptions, Color, ColorInformation, ColorPresentation, Command, CompletionOptions,
DocumentSymbol, DocumentSymbolResponse, Hover, InitializeParams, InitializeResult, OneOf,
Position, PrepareRenameResponse, PublishDiagnosticsParams, RenameOptions,
SemanticTokensFullOptions, SemanticTokensLegend, SemanticTokensOptions, ServerCapabilities,
ServerInfo, TextDocumentSyncCapability, TextEdit, Url, WorkDoneProgressOptions, WorkspaceEdit,
};
use std::cell::RefCell;
use std::collections::HashMap;
use std::future::Future;
use std::path::PathBuf;
use std::pin::Pin;
use std::rc::Rc;
const QUERY_PROPERTIES_COMMAND: &str = "slint/queryProperties";
const REMOVE_BINDING_COMMAND: &str = "slint/removeBinding";
const SHOW_PREVIEW_COMMAND: &str = "slint/showPreview";
const SET_BINDING_COMMAND: &str = "slint/setBinding";
const SET_DESIGN_MODE_COMMAND: &str = "slint/setDesignMode";
const TOGGLE_DESIGN_MODE_COMMAND: &str = "slint/toggleDesignMode";
pub fn uri_to_file(uri: &lsp_types::Url) -> Option<PathBuf> {
let Ok(path) = uri.to_file_path() else { return None };
let cleaned_path = clean_path(&path);
Some(cleaned_path)
}
fn command_list() -> Vec<String> {
vec![
QUERY_PROPERTIES_COMMAND.into(),
REMOVE_BINDING_COMMAND.into(),
#[cfg(any(feature = "preview", feature = "preview-lense"))]
SHOW_PREVIEW_COMMAND.into(),
#[cfg(any(feature = "preview", feature = "preview-lense"))]
SET_DESIGN_MODE_COMMAND.into(),
SET_BINDING_COMMAND.into(),
#[cfg(any(feature = "preview", feature = "preview-lense"))]
TOGGLE_DESIGN_MODE_COMMAND.into(),
]
}
fn create_show_preview_command(
pretty: bool,
file: &lsp_types::Url,
component_name: &str,
) -> Command {
let title = format!("{}Show Preview", if pretty { &"▶ " } else { &"" });
Command::new(
title,
SHOW_PREVIEW_COMMAND.into(),
Some(vec![file.as_str().into(), component_name.into()]),
)
}
/// A cache of loaded documents
pub struct DocumentCache {
pub(crate) documents: TypeLoader,
versions: HashMap<Url, i32>,
}
impl DocumentCache {
pub fn new(config: CompilerConfiguration) -> Self {
let documents =
TypeLoader::new(TypeRegister::builtin(), config, &mut BuildDiagnostics::default());
Self { documents, versions: Default::default() }
}
pub fn document_version(&self, target_uri: &lsp_types::Url) -> Option<i32> {
self.versions.get(target_uri).cloned()
}
}
pub struct Context {
pub document_cache: RefCell<DocumentCache>,
pub server_notifier: crate::ServerNotifier,
pub init_param: InitializeParams,
pub preview: Box<dyn PreviewApi>,
}
#[derive(Default)]
pub struct RequestHandler(
pub HashMap<
&'static str,
Box<
dyn Fn(
serde_json::Value,
Rc<Context>,
) -> Pin<Box<dyn Future<Output = Result<serde_json::Value>>>>,
>,
>,
);
impl RequestHandler {
pub fn register<
R: lsp_types::request::Request,
Fut: Future<Output = Result<R::Result>> + 'static,
>(
&mut self,
handler: fn(R::Params, Rc<Context>) -> Fut,
) where
R::Params: 'static,
{
self.0.insert(
R::METHOD,
Box::new(move |value, ctx| {
Box::pin(async move {
let params = serde_json::from_value(value)
.map_err(|e| format!("error when deserializing request: {e:?}"))?;
handler(params, ctx).await.map(|x| serde_json::to_value(x).unwrap())
})
}),
);
}
}
pub fn server_initialize_result(client_cap: &ClientCapabilities) -> InitializeResult {
InitializeResult {
capabilities: ServerCapabilities {
completion_provider: Some(CompletionOptions {
resolve_provider: None,
trigger_characters: Some(vec![".".to_owned()]),
work_done_progress_options: WorkDoneProgressOptions::default(),
all_commit_characters: None,
completion_item: None,
}),
definition_provider: Some(OneOf::Left(true)),
text_document_sync: Some(TextDocumentSyncCapability::Kind(
lsp_types::TextDocumentSyncKind::FULL,
)),
code_action_provider: Some(CodeActionProviderCapability::Simple(true)),
execute_command_provider: Some(lsp_types::ExecuteCommandOptions {
commands: command_list(),
..Default::default()
}),
document_symbol_provider: Some(OneOf::Left(true)),
color_provider: Some(true.into()),
code_lens_provider: Some(CodeLensOptions { resolve_provider: Some(true) }),
semantic_tokens_provider: Some(
SemanticTokensOptions {
legend: SemanticTokensLegend {
token_types: semantic_tokens::LEGEND_TYPES.to_vec(),
token_modifiers: semantic_tokens::LEGEND_MODS.to_vec(),
},
full: Some(SemanticTokensFullOptions::Bool(true)),
..Default::default()
}
.into(),
),
document_highlight_provider: Some(OneOf::Left(true)),
rename_provider: Some(
if client_cap
.text_document
.as_ref()
.and_then(|td| td.rename.as_ref())
.and_then(|r| r.prepare_support)
.unwrap_or(false)
{
OneOf::Right(RenameOptions {
prepare_provider: Some(true),
work_done_progress_options: WorkDoneProgressOptions::default(),
})
} else {
OneOf::Left(true)
},
),
..ServerCapabilities::default()
},
server_info: Some(ServerInfo {
name: env!("CARGO_PKG_NAME").to_string(),
version: Some(env!("CARGO_PKG_VERSION").to_string()),
}),
offset_encoding: Some("utf-8".to_string()),
}
}
pub fn register_request_handlers(rh: &mut RequestHandler) {
rh.register::<GotoDefinition, _>(|params, ctx| async move {
let document_cache = &mut ctx.document_cache.borrow_mut();
let result = token_descr(
document_cache,
&params.text_document_position_params.text_document.uri,
&params.text_document_position_params.position,
)
.and_then(|token| goto::goto_definition(document_cache, token.0));
Ok(result)
});
rh.register::<Completion, _>(|params, ctx| async move {
let document_cache = &mut ctx.document_cache.borrow_mut();
let result = token_descr(
document_cache,
&params.text_document_position.text_document.uri,
&params.text_document_position.position,
)
.and_then(|token| {
completion::completion_at(
document_cache,
token.0,
token.1,
ctx.init_param
.capabilities
.text_document
.as_ref()
.and_then(|t| t.completion.as_ref()),
)
.map(Into::into)
});
Ok(result)
});
rh.register::<HoverRequest, _>(|_params, _ctx| async move {
/*let result =
token_descr(document_cache, params.text_document_position_params).map(|x| Hover {
contents: lsp_types::HoverContents::Scalar(MarkedString::from_language_code(
"text".into(),
format!("{:?}", x.token),
)),
range: None,
});
let resp = Response::new_ok(id, result);
connection.sender.send(Message::Response(resp))?;*/
Ok(None::<Hover>)
});
rh.register::<CodeActionRequest, _>(|params, ctx| async move {
let document_cache = &mut ctx.document_cache.borrow_mut();
let result = token_descr(document_cache, &params.text_document.uri, &params.range.start)
.and_then(|(token, _)| {
get_code_actions(document_cache, token, &ctx.init_param.capabilities)
});
Ok(result)
});
rh.register::<ExecuteCommand, _>(|params, ctx| async move {
if params.command.as_str() == SHOW_PREVIEW_COMMAND {
#[cfg(feature = "preview")]
show_preview_command(&params.arguments, &ctx)?;
return Ok(None::<serde_json::Value>);
}
if params.command.as_str() == SET_DESIGN_MODE_COMMAND {
#[cfg(feature = "preview")]
set_design_mode(&params.arguments, &ctx)?;
return Ok(None::<serde_json::Value>);
}
if params.command.as_str() == TOGGLE_DESIGN_MODE_COMMAND {
#[cfg(feature = "preview")]
toggle_design_mode(&params.arguments, &ctx)?;
return Ok(None::<serde_json::Value>);
}
if params.command.as_str() == QUERY_PROPERTIES_COMMAND {
return Ok(Some(query_properties_command(&params.arguments, &ctx)?));
}
if params.command.as_str() == SET_BINDING_COMMAND {
return Ok(Some(set_binding_command(&params.arguments, &ctx).await?));
}
if params.command.as_str() == REMOVE_BINDING_COMMAND {
return Ok(Some(remove_binding_command(&params.arguments, &ctx).await?));
}
Ok(None::<serde_json::Value>)
});
rh.register::<DocumentColor, _>(|params, ctx| async move {
let document_cache = &mut ctx.document_cache.borrow_mut();
Ok(get_document_color(document_cache, &params.text_document).unwrap_or_default())
});
rh.register::<ColorPresentationRequest, _>(|params, _ctx| async move {
// Convert the color from the color picker to a string representation. This could try to produce a minimal
// representation.
let requested_color = params.color;
let color_literal = if requested_color.alpha < 1. {
format!(
"#{:0>2x}{:0>2x}{:0>2x}{:0>2x}",
(requested_color.red * 255.) as u8,
(requested_color.green * 255.) as u8,
(requested_color.blue * 255.) as u8,
(requested_color.alpha * 255.) as u8
)
} else {
format!(
"#{:0>2x}{:0>2x}{:0>2x}",
(requested_color.red * 255.) as u8,
(requested_color.green * 255.) as u8,
(requested_color.blue * 255.) as u8,
)
};
Ok(vec![ColorPresentation { label: color_literal, ..Default::default() }])
});
rh.register::<DocumentSymbolRequest, _>(|params, ctx| async move {
let document_cache = &mut ctx.document_cache.borrow_mut();
Ok(get_document_symbols(document_cache, &params.text_document))
});
rh.register::<CodeLensRequest, _>(|params, ctx| async move {
let document_cache = &mut ctx.document_cache.borrow_mut();
Ok(get_code_lenses(document_cache, &params.text_document))
});
rh.register::<SemanticTokensFullRequest, _>(|params, ctx| async move {
let document_cache = &mut ctx.document_cache.borrow_mut();
Ok(semantic_tokens::get_semantic_tokens(document_cache, &params.text_document))
});
rh.register::<DocumentHighlightRequest, _>(|_params, ctx| async move {
let document_cache = &mut ctx.document_cache.borrow_mut();
let uri = _params.text_document_position_params.text_document.uri;
if let Some((tk, _off)) =
token_descr(document_cache, &uri, &_params.text_document_position_params.position)
{
let p = tk.parent();
if p.kind() == SyntaxKind::QualifiedName
&& p.parent().map_or(false, |n| n.kind() == SyntaxKind::Element)
{
if let Some(range) = map_node(&p) {
ctx.preview.highlight(uri_to_file(&uri), _off)?;
return Ok(Some(vec![lsp_types::DocumentHighlight { range, kind: None }]));
}
}
if let Some(value) = find_element_id_for_highlight(&tk, &p) {
ctx.preview.highlight(None, 0)?;
return Ok(Some(
value
.into_iter()
.map(|r| lsp_types::DocumentHighlight {
range: map_range(&p.source_file, r),
kind: None,
})
.collect(),
));
}
}
ctx.preview.highlight(None, 0)?;
Ok(None)
});
rh.register::<Rename, _>(|params, ctx| async move {
let mut document_cache = ctx.document_cache.borrow_mut();
let uri = params.text_document_position.text_document.uri;
if let Some((tk, _off)) =
token_descr(&mut document_cache, &uri, &params.text_document_position.position)
{
let p = tk.parent();
if let Some(value) = find_element_id_for_highlight(&tk, &tk.parent()) {
let edits = value
.into_iter()
.map(|r| TextEdit {
range: map_range(&p.source_file, r),
new_text: params.new_name.clone(),
})
.collect();
return Ok(Some(WorkspaceEdit {
changes: Some(std::iter::once((uri, edits)).collect()),
..Default::default()
}));
}
};
Err("This symbol cannot be renamed. (Only element id can be renamed at the moment)".into())
});
rh.register::<PrepareRenameRequest, _>(|params, ctx| async move {
let mut document_cache = ctx.document_cache.borrow_mut();
let uri = params.text_document.uri;
if let Some((tk, _off)) = token_descr(&mut document_cache, &uri, &params.position) {
if find_element_id_for_highlight(&tk, &tk.parent()).is_some() {
return Ok(map_token(&tk).map(PrepareRenameResponse::Range));
}
};
Ok(None)
});
}
#[cfg(feature = "preview")]
pub fn show_preview_command(params: &[serde_json::Value], ctx: &Rc<Context>) -> Result<()> {
let document_cache = &mut ctx.document_cache.borrow_mut();
let config = &document_cache.documents.compiler_config;
let e = || "InvalidParameter";
let url = if let serde_json::Value::String(s) = params.get(0).ok_or_else(e)? {
Url::parse(s)?
} else {
return Err(e().into());
};
let component =
params.get(1).and_then(|v| v.as_str()).filter(|v| !v.is_empty()).map(|v| v.to_string());
let path = uri_to_file(&url).unwrap_or_default();
ctx.preview.load_preview(
crate::common::PreviewComponent {
path,
component,
include_paths: config.include_paths.clone(),
style: config.style.clone().unwrap_or_default(),
},
crate::common::PostLoadBehavior::ShowAfterLoad,
);
Ok(())
}
#[cfg(feature = "preview")]
pub fn set_design_mode(params: &[serde_json::Value], ctx: &Rc<Context>) -> Result<()> {
let e = || "InvalidParameter";
let enable = if let serde_json::Value::Bool(b) = params.get(0).ok_or_else(e)? {
b
} else {
return Err(e().into());
};
ctx.preview.set_design_mode(*enable);
Ok(())
}
#[cfg(feature = "preview")]
pub fn toggle_design_mode(_params: &[serde_json::Value], ctx: &Rc<Context>) -> Result<()> {
ctx.preview.set_design_mode(!ctx.preview.design_mode());
Ok(())
}
pub fn query_properties_command(
params: &[serde_json::Value],
ctx: &Rc<Context>,
) -> Result<serde_json::Value> {
let document_cache = &mut ctx.document_cache.borrow_mut();
let text_document_uri = serde_json::from_value::<lsp_types::TextDocumentIdentifier>(
params.get(0).ok_or("No text document provided")?.clone(),
)?
.uri;
let position = serde_json::from_value::<lsp_types::Position>(
params.get(1).ok_or("No position provided")?.clone(),
)?;
let source_version = if let Some(v) = document_cache.document_version(&text_document_uri) {
v
} else {
return Ok(serde_json::to_value(properties::QueryPropertyResponse::no_element_response(
text_document_uri.to_string(),
-1,
))
.expect("Failed to serialize none-element property query result!"));
};
if let Some(element) = element_at_position(document_cache, &text_document_uri, &position) {
properties::query_properties(&text_document_uri, source_version, &element)
.map(|r| serde_json::to_value(r).expect("Failed to serialize property query result!"))
} else {
Ok(serde_json::to_value(properties::QueryPropertyResponse::no_element_response(
text_document_uri.to_string(),
source_version,
))
.expect("Failed to serialize none-element property query result!"))
}
}
pub async fn set_binding_command(
params: &[serde_json::Value],
ctx: &Rc<Context>,
) -> Result<serde_json::Value> {
let text_document = serde_json::from_value::<lsp_types::OptionalVersionedTextDocumentIdentifier>(
params.get(0).ok_or("No text document provided")?.clone(),
)?;
let element_range = serde_json::from_value::<lsp_types::Range>(
params.get(1).ok_or("No element range provided")?.clone(),
)?;
let property_name = serde_json::from_value::<String>(
params.get(2).ok_or("No property name provided")?.clone(),
)?;
let new_expression =
serde_json::from_value::<String>(params.get(3).ok_or("No expression provided")?.clone())?;
let dry_run = {
if let Some(p) = params.get(4) {
serde_json::from_value::<bool>(p.clone())
} else {
Ok(true)
}
}?;
let (result, edit) = {
let document_cache = &mut ctx.document_cache.borrow_mut();
let uri = text_document.uri;
if let Some(source_version) = text_document.version {
if let Some(current_version) = document_cache.document_version(&uri) {
if current_version != source_version {
return Err(
"Document version mismatch. Please refresh your property information"
.into(),
);
}
} else {
return Err(format!("Document with uri {uri} not found in cache").into());
}
}
let element =
element_at_position(document_cache, &uri, &element_range.start).ok_or_else(|| {
format!("No element found at the given start position {:?}", &element_range.start)
})?;
let node_range = map_node(
element
.borrow()
.node
.as_ref()
.ok_or("The element was found, but had no range defined!")?,
)
.ok_or("Failed to map node")?;
if node_range.start != element_range.start {
return Err(format!(
"Element found, but does not start at the expected place (){:?} != {:?}).",
node_range.start, element_range.start
)
.into());
}
if node_range.end != element_range.end {
return Err(format!(
"Element found, but does not end at the expected place (){:?} != {:?}).",
node_range.end, element_range.end
)
.into());
}
properties::set_binding(document_cache, &uri, &element, &property_name, new_expression)?
};
if !dry_run {
if let Some(edit) = edit {
let response = ctx
.server_notifier
.send_request::<lsp_types::request::ApplyWorkspaceEdit>(
lsp_types::ApplyWorkspaceEditParams { label: Some("set binding".into()), edit },
)?
.await?;
if !response.applied {
return Err(response
.failure_reason
.unwrap_or("Operation failed, no specific reason given".into())
.into());
}
}
}
Ok(serde_json::to_value(result).expect("Failed to serialize set_binding result!"))
}
pub async fn remove_binding_command(
params: &[serde_json::Value],
ctx: &Rc<Context>,
) -> Result<serde_json::Value> {
let text_document = serde_json::from_value::<lsp_types::OptionalVersionedTextDocumentIdentifier>(
params.get(0).ok_or("No text document provided")?.clone(),
)?;
let element_range = serde_json::from_value::<lsp_types::Range>(
params.get(1).ok_or("No element range provided")?.clone(),
)?;
let property_name = serde_json::from_value::<String>(
params.get(2).ok_or("No property name provided")?.clone(),
)?;
let edit = {
let document_cache = &mut ctx.document_cache.borrow_mut();
let uri = text_document.uri;
if let Some(source_version) = text_document.version {
if let Some(current_version) = document_cache.document_version(&uri) {
if current_version != source_version {
return Err(
"Document version mismatch. Please refresh your property information"
.into(),
);
}
} else {
return Err(format!("Document with uri {uri} not found in cache").into());
}
}
let element =
element_at_position(document_cache, &uri, &element_range.start).ok_or_else(|| {
format!("No element found at the given start position {:?}", &element_range.start)
})?;
let node_range = map_node(
element
.borrow()
.node
.as_ref()
.ok_or("The element was found, but had no range defined!")?,
)
.ok_or("Failed to map node")?;
if node_range.start != element_range.start {
return Err(format!(
"Element found, but does not start at the expected place (){:?} != {:?}).",
node_range.start, element_range.start
)
.into());
}
if node_range.end != element_range.end {
return Err(format!(
"Element found, but does not end at the expected place (){:?} != {:?}).",
node_range.end, element_range.end
)
.into());
}
properties::remove_binding(document_cache, &uri, &element, &property_name)?
};
let response = ctx
.server_notifier
.send_request::<lsp_types::request::ApplyWorkspaceEdit>(
lsp_types::ApplyWorkspaceEditParams { label: Some("set binding".into()), edit },
)?
.await?;
if !response.applied {
return Err(response
.failure_reason
.unwrap_or("Operation failed, no specific reason given".into())
.into());
}
Ok(serde_json::to_value(()).expect("Failed to serialize ()!"))
}
pub(crate) async fn reload_document_impl(
ctx: Option<&Rc<Context>>,
mut content: String,
uri: lsp_types::Url,
version: i32,
document_cache: &mut DocumentCache,
) -> HashMap<Url, Vec<lsp_types::Diagnostic>> {
let Some(path) = uri_to_file(&uri) else { return Default::default() };
if path.extension().map_or(false, |e| e == "rs") {
content = match i_slint_compiler::lexer::extract_rust_macro(content) {
Some(content) => content,
// A rust file without a rust macro, just ignore it
None => return [(uri, vec![])].into_iter().collect(),
};
}
document_cache.versions.insert(uri.clone(), version);
if let Some(ctx) = ctx {
ctx.preview.set_contents(&path, &content);
}
let mut diag = BuildDiagnostics::default();
document_cache.documents.load_file(&path, &path, content, false, &mut diag).await;
// Always provide diagnostics for all files. Empty diagnostics clear any previous ones.
let mut lsp_diags: HashMap<Url, Vec<lsp_types::Diagnostic>> = core::iter::once(&path)
.chain(diag.all_loaded_files.iter())
.map(|path| {
let uri = Url::from_file_path(path).unwrap();
(uri, Default::default())
})
.collect();
for d in diag.into_iter() {
#[cfg(not(target_arch = "wasm32"))]
if d.source_file().unwrap().is_relative() {
continue;
}
let uri = Url::from_file_path(d.source_file().unwrap()).unwrap();
lsp_diags.entry(uri).or_default().push(to_lsp_diag(&d));
}
lsp_diags
}
pub async fn reload_document(
ctx: &Rc<Context>,
content: String,
uri: lsp_types::Url,
version: i32,
document_cache: &mut DocumentCache,
) -> Result<()> {
let lsp_diags = reload_document_impl(Some(ctx), content, uri, version, document_cache).await;
for (uri, diagnostics) in lsp_diags {
ctx.server_notifier.send_notification(
"textDocument/publishDiagnostics".into(),
PublishDiagnosticsParams { uri, diagnostics, version: None },
)?;
}
Ok(())
}
fn get_document_and_offset<'a>(
document_cache: &'a mut DocumentCache,
text_document_uri: &'a Url,
pos: &'a Position,
) -> Option<(&'a i_slint_compiler::object_tree::Document, u32)> {
let path = uri_to_file(&text_document_uri)?;
let doc = document_cache.documents.get_document(&path)?;
let o = doc.node.as_ref()?.source_file.offset(pos.line as usize + 1, pos.character as usize + 1)
as u32;
doc.node.as_ref()?.text_range().contains_inclusive(o.into()).then_some((doc, o))
}
fn element_contains(element: &i_slint_compiler::object_tree::ElementRc, offset: u32) -> bool {
element.borrow().node.as_ref().map_or(false, |n| n.text_range().contains(offset.into()))
}
pub fn element_at_position(
document_cache: &mut DocumentCache,
text_document_uri: &Url,
pos: &Position,
) -> Option<i_slint_compiler::object_tree::ElementRc> {
let (doc, offset) = get_document_and_offset(document_cache, text_document_uri, pos)?;
for component in &doc.inner_components {
let mut element = component.root_element.clone();
while element_contains(&element, offset) {
if let Some(c) =
element.clone().borrow().children.iter().find(|c| element_contains(c, offset))
{
element = c.clone();
} else {
return Some(element);
}
}
}
None
}
/// return the token, and the offset within the file
fn token_descr(
document_cache: &mut DocumentCache,
text_document_uri: &Url,
pos: &Position,
) -> Option<(SyntaxToken, u32)> {
let (doc, o) = get_document_and_offset(document_cache, text_document_uri, pos)?;
let node = doc.node.as_ref()?;
let token = token_at_offset(node, o)?;
Some((token, o))
}
/// Return the token that matches best the token at cursor position
pub fn token_at_offset(doc: &syntax_nodes::Document, offset: u32) -> Option<SyntaxToken> {
let mut taf = doc.token_at_offset(offset.into());
let token = match (taf.next(), taf.next()) {
(None, _) => doc.last_token()?,
(Some(t), None) => t,
(Some(l), Some(r)) => match (l.kind(), r.kind()) {
// Prioritize identifier
(SyntaxKind::Identifier, _) => l,
(_, SyntaxKind::Identifier) => r,
// then the dot
(SyntaxKind::Dot, _) => l,
(_, SyntaxKind::Dot) => r,
// de-prioritize the white spaces
(SyntaxKind::Whitespace, _) => r,
(SyntaxKind::Comment, _) => r,
(_, SyntaxKind::Whitespace) => l,
(_, SyntaxKind::Comment) => l,
_ => l,
},
};
Some(SyntaxToken { token, source_file: doc.source_file.clone() })
}
fn has_experimental_client_capability(capabilities: &ClientCapabilities, name: &str) -> bool {
capabilities
.experimental
.as_ref()
.and_then(|o| o.get(name).and_then(|v| v.as_bool()))
.unwrap_or(false)
}
fn get_code_actions(
document_cache: &mut DocumentCache,
token: SyntaxToken,
client_capabilities: &ClientCapabilities,
) -> Option<Vec<CodeActionOrCommand>> {
let node = token.parent();
let uri = Url::from_file_path(token.source_file.path()).ok()?;
let mut result = vec![];
let component = syntax_nodes::Component::new(node.clone())
.or_else(|| {
syntax_nodes::DeclaredIdentifier::new(node.clone())
.and_then(|n| n.parent())
.and_then(syntax_nodes::Component::new)
})
.or_else(|| {
syntax_nodes::QualifiedName::new(node.clone())
.and_then(|n| n.parent())
.and_then(syntax_nodes::Element::new)
.and_then(|n| n.parent())
.and_then(syntax_nodes::Component::new)
});
#[cfg(feature = "preview-lense")]
{
if let Some(component) = &component {
if let Some(component_name) =
i_slint_compiler::parser::identifier_text(&component.DeclaredIdentifier())
{
result.push(CodeActionOrCommand::Command(create_show_preview_command(
false,
&uri,
&component_name,
)))
}
}
}
if token.kind() == SyntaxKind::StringLiteral && node.kind() == SyntaxKind::Expression {
let r = map_range(&token.source_file, node.text_range());
let edits = vec![
TextEdit::new(lsp_types::Range::new(r.start, r.start), "@tr(".into()),
TextEdit::new(lsp_types::Range::new(r.end, r.end), ")".into()),
];
result.push(CodeActionOrCommand::CodeAction(lsp_types::CodeAction {
title: "Wrap in `@tr()`".into(),
edit: Some(WorkspaceEdit {
changes: Some(std::iter::once((uri, edits)).collect()),
..Default::default()
}),
..Default::default()
}));
} else if token.kind() == SyntaxKind::Identifier
&& node.kind() == SyntaxKind::QualifiedName
&& node.parent().map(|n| n.kind()) == Some(SyntaxKind::Element)
&& has_experimental_client_capability(client_capabilities, "snippetTextEdit")
{
let r = map_range(&token.source_file, node.parent().unwrap().text_range());
let element = element_at_position(document_cache, &uri, &r.start);
let element_indent = element.as_ref().and_then(find_element_indent);
let indented_lines = node
.parent()
.unwrap()
.text()
.to_string()
.lines()
.map(|line| if line.is_empty() { line.to_string() } else { format!(" {}", line) })
.collect::<Vec<String>>();
let edits = vec![TextEdit::new(
lsp_types::Range::new(r.start, r.end),
format!(
"${{0:element}} {{\n{}{}\n}}",
element_indent.unwrap_or("".into()),
indented_lines.join("\n")
),
)];
result.push(CodeActionOrCommand::CodeAction(lsp_types::CodeAction {
title: "Wrap in element".into(),
kind: Some(lsp_types::CodeActionKind::REFACTOR),
edit: Some(WorkspaceEdit {
changes: Some(std::iter::once((uri.clone(), edits)).collect()),
..Default::default()
}),
..Default::default()
}));
// Collect all normal, repeated, and conditional sub-elements and any
// whitespace in between for substituting the parent element with its
// sub-elements, dropping its own properties, callbacks etc.
fn is_sub_element(kind: SyntaxKind) -> bool {
match kind {
SyntaxKind::SubElement => true,
SyntaxKind::RepeatedElement => true,
SyntaxKind::ConditionalElement => true,
_ => return false,
}
}
let sub_elements = node
.parent()
.unwrap()
.children_with_tokens()
.skip_while(|n| !is_sub_element(n.kind()))
.filter(|n| match n {
NodeOrToken::Node(_) => is_sub_element(n.kind()),
NodeOrToken::Token(t) => {
t.kind() == SyntaxKind::Whitespace
&& t.next_sibling_or_token().map_or(false, |n| is_sub_element(n.kind()))
}
})
.collect::<Vec<_>>();
if match component {
// A top-level component element can only be removed if it contains
// exactly one sub-element (without any condition or assignment)
// that can substitute the component element.
Some(_) => {
sub_elements.len() == 1
&& sub_elements
.first()
.and_then(|n| n.as_node().unwrap().first_child_or_token().map(|n| n.kind()))
== Some(SyntaxKind::Element)
}
// Any other element can be removed in favor of one or more sub-elements.
None => sub_elements.iter().any(|n| n.kind() == SyntaxKind::SubElement),
} {
let unindented_lines = sub_elements
.iter()
.map(|n| match n {
NodeOrToken::Node(n) => n
.text()
.to_string()
.lines()
.map(|line| line.strip_prefix(" ").unwrap_or(line).to_string())
.collect::<Vec<_>>()
.join("\n"),
NodeOrToken::Token(t) => {
t.text().strip_suffix(" ").unwrap_or(t.text()).to_string()
}
})
.collect::<Vec<String>>();
let edits = vec![TextEdit::new(
lsp_types::Range::new(r.start, r.end),
unindented_lines.concat(),
)];
result.push(CodeActionOrCommand::CodeAction(lsp_types::CodeAction {
title: "Remove element".into(),
kind: Some(lsp_types::CodeActionKind::REFACTOR),
edit: Some(WorkspaceEdit {
changes: Some(std::iter::once((uri, edits)).collect()),
..Default::default()
}),
..Default::default()
}));
}
}
(!result.is_empty()).then_some(result)
}
fn get_document_color(
document_cache: &mut DocumentCache,
text_document: &lsp_types::TextDocumentIdentifier,
) -> Option<Vec<ColorInformation>> {
let mut result = Vec::new();
let uri_path = uri_to_file(&text_document.uri)?;
let doc = document_cache.documents.get_document(&uri_path)?;
let root_node = doc.node.as_ref()?;
let mut token = root_node.first_token()?;
loop {
if token.kind() == SyntaxKind::ColorLiteral {
(|| -> Option<()> {
let range = map_token(&token)?;
let col = i_slint_compiler::literals::parse_color_literal(token.text())?;
let shift = |s: u32| -> f32 { ((col >> s) & 0xff) as f32 / 255. };
result.push(ColorInformation {
range,
color: Color {
alpha: shift(24),
red: shift(16),
green: shift(8),
blue: shift(0),
},
});
Some(())
})();
}
token = match token.next_token() {
Some(token) => token,
None => break Some(result),
}
}
}
fn get_document_symbols(
document_cache: &mut DocumentCache,
text_document: &lsp_types::TextDocumentIdentifier,
) -> Option<DocumentSymbolResponse> {
let uri_path = uri_to_file(&text_document.uri)?;
let doc = document_cache.documents.get_document(&uri_path)?;
// DocumentSymbol doesn't implement default and some field depends on features or are deprecated
let ds: DocumentSymbol = serde_json::from_value(
serde_json::json!({ "name" : "", "kind": 255, "range" : lsp_types::Range::default(), "selectionRange": lsp_types::Range::default() })
)
.unwrap();
let inner_components = doc.inner_components.clone();
let inner_types = doc.inner_types.clone();
let mut r = inner_components
.iter()
.filter_map(|c| {
let root_element = c.root_element.borrow();
let element_node = root_element.node.as_ref()?;
let component_node = syntax_nodes::Component::new(element_node.parent()?)?;
let selection_range = map_node(&component_node.DeclaredIdentifier())?;
Some(DocumentSymbol {
range: map_node(&component_node)?,
selection_range,
name: c.id.clone(),
kind: if c.is_global() {
lsp_types::SymbolKind::OBJECT
} else {
lsp_types::SymbolKind::CLASS
},
children: gen_children(&c.root_element, &ds),
..ds.clone()
})
})
.collect::<Vec<_>>();
r.extend(inner_types.iter().filter_map(|c| match c {
Type::Struct { name: Some(name), node: Some(node), .. } => Some(DocumentSymbol {
range: map_node(node.parent().as_ref()?)?,
selection_range: map_node(node)?,
name: name.clone(),
kind: lsp_types::SymbolKind::STRUCT,
..ds.clone()
}),
Type::Enumeration(enumeration) => enumeration.node.as_ref().and_then(|node| {
Some(DocumentSymbol {
range: map_node(node.parent().as_ref()?)?,
selection_range: map_node(node)?,
name: enumeration.name.clone(),
kind: lsp_types::SymbolKind::ENUM,
..ds.clone()
})
}),
_ => None,
}));
fn gen_children(elem: &ElementRc, ds: &DocumentSymbol) -> Option<Vec<DocumentSymbol>> {
let r = elem
.borrow()
.children
.iter()
.filter_map(|child| {
let e = child.borrow();
Some(DocumentSymbol {
range: map_node(e.node.as_ref()?)?,
selection_range: map_node(e.node.as_ref()?.QualifiedName().as_ref()?)?,
name: e.base_type.to_string(),
detail: (!e.id.is_empty()).then(|| e.id.clone()),
kind: lsp_types::SymbolKind::VARIABLE,
children: gen_children(child, ds),
..ds.clone()
})
})
.collect::<Vec<_>>();
(!r.is_empty()).then_some(r)
}
r.sort_by(|a, b| {
if a.range.start.line.cmp(&b.range.start.line) == std::cmp::Ordering::Less {
std::cmp::Ordering::Less
} else if a.range.start.line.cmp(&b.range.start.line) == std::cmp::Ordering::Equal {
a.range.start.character.cmp(&b.range.start.character)
} else {
std::cmp::Ordering::Greater
}
});
Some(r.into())
}
fn get_code_lenses(
document_cache: &mut DocumentCache,
text_document: &lsp_types::TextDocumentIdentifier,
) -> Option<Vec<CodeLens>> {
if cfg!(feature = "preview-lense") {
let filepath = uri_to_file(&text_document.uri)?;
let doc = document_cache.documents.get_document(&filepath)?;
let inner_components = doc.inner_components.clone();
let mut r = vec![];
// Handle preview lens
r.extend(inner_components.iter().filter(|c| !c.is_global()).filter_map(|c| {
Some(CodeLens {
range: map_node(c.root_element.borrow().node.as_ref()?)?,
command: Some(create_show_preview_command(true, &text_document.uri, c.id.as_str())),
data: None,
})
}));
Some(r)
} else {
None
}
}
/// If the token is matching a Element ID, return the list of all element id in the same component
fn find_element_id_for_highlight(
token: &SyntaxToken,
parent: &SyntaxNode,
) -> Option<Vec<rowan::TextRange>> {
fn is_element_id(tk: &SyntaxToken, parent: &SyntaxNode) -> bool {
if tk.kind() != SyntaxKind::Identifier {
return false;
}
if parent.kind() == SyntaxKind::SubElement {
return true;
};
if parent.kind() == SyntaxKind::QualifiedName
&& matches!(
parent.parent().map(|n| n.kind()),
Some(SyntaxKind::Expression | SyntaxKind::StatePropertyChange)
)
{
let mut c = parent.children_with_tokens();
if let Some(NodeOrToken::Token(first)) = c.next() {
return first.text_range() == tk.text_range()
&& matches!(c.next(), Some(NodeOrToken::Token(second)) if second.kind() == SyntaxKind::Dot);
}
}
false
}
if is_element_id(token, parent) {
// An id: search all use of the id in this Component
let mut candidate = parent.parent();
while let Some(c) = candidate {
if c.kind() == SyntaxKind::Component {
let mut ranges = Vec::new();
let mut found_definition = false;
recurse(&mut ranges, &mut found_definition, c, token.text());
fn recurse(
ranges: &mut Vec<rowan::TextRange>,
found_definition: &mut bool,
c: SyntaxNode,
text: &str,
) {
for x in c.children_with_tokens() {
match x {
NodeOrToken::Node(n) => recurse(ranges, found_definition, n, text),
NodeOrToken::Token(tk) => {
if is_element_id(&tk, &c) && tk.text() == text {
ranges.push(tk.text_range());
if c.kind() == SyntaxKind::SubElement {
*found_definition = true;
}
}
}
}
}
}
if !found_definition {
return None;
}
return Some(ranges);
}
candidate = c.parent()
}
}
None
}
pub async fn load_configuration(ctx: &Context) -> Result<()> {
if !ctx
.init_param
.capabilities
.workspace
.as_ref()
.and_then(|w| w.configuration)
.unwrap_or(false)
{
return Ok(());
}
let r = ctx
.server_notifier
.send_request::<lsp_types::request::WorkspaceConfiguration>(
lsp_types::ConfigurationParams {
items: vec![lsp_types::ConfigurationItem {
scope_uri: None,
section: Some("slint".into()),
}],
},
)?
.await?;
let document_cache = &mut ctx.document_cache.borrow_mut();
for v in r {
if let Some(o) = v.as_object() {
if let Some(ip) = o.get("includePath").and_then(|v| v.as_array()) {
if !ip.is_empty() {
document_cache.documents.compiler_config.include_paths =
ip.iter().filter_map(|x| x.as_str()).map(PathBuf::from).collect();
}
}
if let Some(style) =
o.get("preview").and_then(|v| v.as_object()?.get("style")?.as_str())
{
if !style.is_empty() {
document_cache.documents.compiler_config.style = Some(style.into());
}
}
}
}
// Always load the widgets so we can auto-complete them
let mut diag = BuildDiagnostics::default();
document_cache.documents.import_component("std-widgets.slint", "StyleMetrics", &mut diag).await;
let cc = &document_cache.documents.compiler_config;
let empty_string = String::new();
ctx.preview.config_changed(&cc.style.as_ref().unwrap_or(&empty_string), &cc.include_paths);
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
use test::{complex_document_cache, loaded_document_cache};
#[test]
fn test_reload_document_invalid_contents() {
let (_, url, diag) = loaded_document_cache("This is not valid!".into());
assert!(diag.len() == 1); // Only one URL is known
let diagnostics = diag.get(&url).expect("URL not found in result");
assert_eq!(diagnostics.len(), 1);
assert_eq!(diagnostics[0].severity, Some(lsp_types::DiagnosticSeverity::ERROR));
}
#[test]
fn test_reload_document_valid_contents() {
let (_, url, diag) =
loaded_document_cache(r#"export component Main inherits Rectangle { }"#.into());
assert!(diag.len() == 1); // Only one URL is known
let diagnostics = diag.get(&url).expect("URL not found in result");
assert!(diagnostics.is_empty());
}
#[test]
fn test_text_document_color_no_color_set() {
let (mut dc, url, _) = loaded_document_cache(
r#"
component Main inherits Rectangle { }
"#
.into(),
);
let result = get_document_color(&mut dc, &lsp_types::TextDocumentIdentifier { uri: url })
.expect("Color Vec was returned");
assert!(result.is_empty());
}
#[test]
fn test_text_document_color_rgba_color() {
let (mut dc, url, _) = loaded_document_cache(
r#"
component Main inherits Rectangle {
background: #1200FF80;
}
"#
.into(),
);
let result = get_document_color(&mut dc, &lsp_types::TextDocumentIdentifier { uri: url })
.expect("Color Vec was returned");
assert_eq!(result.len(), 1);
let start = &result[0].range.start;
assert_eq!(start.line, 2);
assert_eq!(start.character, 28); // TODO: Why is this not 30?
let end = &result[0].range.end;
assert_eq!(end.line, 2);
assert_eq!(end.character, 37); // TODO: Why is this not 39?
let color = &result[0].color;
assert_eq!(f64::trunc(color.red as f64 * 255.0), 18.0);
assert_eq!(f64::trunc(color.green as f64 * 255.0), 0.0);
assert_eq!(f64::trunc(color.blue as f64 * 255.0), 255.0);
assert_eq!(f64::trunc(color.alpha as f64 * 255.0), 128.0);
}
fn id_at_position(
dc: &mut DocumentCache,
url: &Url,
line: u32,
character: u32,
) -> Option<String> {
let result = element_at_position(dc, url, &Position { line, character })?;
let element = result.borrow();
Some(element.id.clone())
}
fn base_type_at_position(
dc: &mut DocumentCache,
url: &Url,
line: u32,
character: u32,
) -> Option<String> {
let result = element_at_position(dc, url, &Position { line, character })?;
let element = result.borrow();
Some(format!("{}", &element.base_type))
}
#[test]
fn test_element_at_position_no_element() {
let (mut dc, url, _) = complex_document_cache();
assert_eq!(id_at_position(&mut dc, &url, 0, 10), None);
// TODO: This is past the end of the line and should thus return None
assert_eq!(id_at_position(&mut dc, &url, 42, 90), Some(String::new()));
assert_eq!(id_at_position(&mut dc, &url, 1, 0), None);
assert_eq!(id_at_position(&mut dc, &url, 55, 1), None);
assert_eq!(id_at_position(&mut dc, &url, 56, 5), None);
}
#[test]
fn test_element_at_position_no_such_document() {
let (mut dc, _, _) = complex_document_cache();
assert_eq!(
id_at_position(&mut dc, &Url::parse("https://foo.bar/baz").unwrap(), 5, 0),
None
);
}
#[test]
fn test_element_at_position_root() {
let (mut dc, url, _) = complex_document_cache();
assert_eq!(id_at_position(&mut dc, &url, 2, 30), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 2, 32), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 2, 42), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 3, 0), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 3, 53), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 4, 19), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 5, 0), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 6, 8), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 6, 15), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 6, 23), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 8, 15), Some("root".to_string()));
assert_eq!(id_at_position(&mut dc, &url, 12, 3), Some("root".to_string())); // right before child // TODO: Seems wrong!
assert_eq!(id_at_position(&mut dc, &url, 51, 5), Some("root".to_string())); // right after child // TODO: Why does this not work?
assert_eq!(id_at_position(&mut dc, &url, 52, 0), Some("root".to_string()));
}
#[test]
fn test_element_at_position_child() {
let (mut dc, url, _) = complex_document_cache();
assert_eq!(base_type_at_position(&mut dc, &url, 12, 4), Some("VerticalBox".to_string()));
assert_eq!(base_type_at_position(&mut dc, &url, 14, 22), Some("HorizontalBox".to_string()));
assert_eq!(base_type_at_position(&mut dc, &url, 15, 33), Some("Text".to_string()));
assert_eq!(base_type_at_position(&mut dc, &url, 27, 4), Some("VerticalBox".to_string()));
assert_eq!(base_type_at_position(&mut dc, &url, 28, 8), Some("Text".to_string()));
assert_eq!(base_type_at_position(&mut dc, &url, 51, 4), Some("VerticalBox".to_string()));
}
#[test]
fn test_document_symbols() {
let (mut dc, uri, _) = complex_document_cache();
let result =
get_document_symbols(&mut dc, &lsp_types::TextDocumentIdentifier { uri }).unwrap();
if let DocumentSymbolResponse::Nested(result) = result {
assert_eq!(result.len(), 1);
let first = result.get(0).unwrap();
assert_eq!(&first.name, "MainWindow");
} else {
unreachable!();
}
}
#[test]
fn test_document_symbols_hello_world() {
let (mut dc, uri, _) = loaded_document_cache(
r#"import { Button, VerticalBox } from "std-widgets.slint";
component Demo {
VerticalBox {
alignment: start;
Text {
text: "Hello World!";
font-size: 24px;
horizontal-alignment: center;
}
Image {
source: @image-url("https://slint.dev/logo/slint-logo-full-light.svg");
height: 100px;
}
HorizontalLayout { alignment: center; Button { text: "OK!"; } }
}
}
"#
.into(),
);
let result =
get_document_symbols(&mut dc, &lsp_types::TextDocumentIdentifier { uri }).unwrap();
if let DocumentSymbolResponse::Nested(result) = result {
assert_eq!(result.len(), 1);
let first = result.get(0).unwrap();
assert_eq!(&first.name, "Demo");
} else {
unreachable!();
}
}
#[test]
fn test_code_actions() {
let (mut dc, url, _) = loaded_document_cache(
r#"import { Button, VerticalBox , LineEdit, HorizontalBox} from "std-widgets.slint";
export component TestWindow inherits Window {
VerticalBox {
alignment: start;
Text {
text: "Hello World!";
font-size: 20px;
}
input := LineEdit {
placeholder-text: "Enter your name";
}
if (true): HorizontalBox {
alignment: end;
Button { text: "Cancel"; }
Button {
text: "OK";
primary: true;
}
}
}
}"#
.into(),
);
let mut capabilities = ClientCapabilities::default();
let text_literal = lsp_types::Range::new(Position::new(7, 18), Position::new(7, 32));
assert_eq!(
token_descr(&mut dc, &url, &text_literal.start)
.and_then(|(token, _)| get_code_actions(&mut dc, token, &capabilities)),
Some(vec![CodeActionOrCommand::CodeAction(lsp_types::CodeAction {
title: "Wrap in `@tr()`".into(),
edit: Some(WorkspaceEdit {
changes: Some(
std::iter::once((
url.clone(),
vec![
TextEdit::new(
lsp_types::Range::new(text_literal.start, text_literal.start),
"@tr(".into()
),
TextEdit::new(
lsp_types::Range::new(text_literal.end, text_literal.end),
")".into()
)
]
))
.collect()
),
..Default::default()
}),
..Default::default()
}),])
);
let text_element = lsp_types::Range::new(Position::new(6, 8), Position::new(9, 9));
for offset in 0..=4 {
let pos = Position::new(text_element.start.line, text_element.start.character + offset);
capabilities.experimental = None;
assert_eq!(
token_descr(&mut dc, &url, &pos).and_then(|(token, _)| get_code_actions(
&mut dc,
token,
&capabilities
)),
None
);
capabilities.experimental = Some(serde_json::json!({"snippetTextEdit": true}));
assert_eq!(
token_descr(&mut dc, &url, &pos).and_then(|(token, _)| get_code_actions(
&mut dc,
token,
&capabilities
)),
Some(vec![CodeActionOrCommand::CodeAction(lsp_types::CodeAction {
title: "Wrap in element".into(),
kind: Some(lsp_types::CodeActionKind::REFACTOR),
edit: Some(WorkspaceEdit {
changes: Some(
std::iter::once((
url.clone(),
vec![TextEdit::new(
text_element,
r#"${0:element} {
Text {
text: "Hello World!";
font-size: 20px;
}
}"#
.into()
)]
))
.collect()
),
..Default::default()
}),
..Default::default()
}),])
);
}
let horizontal_box = lsp_types::Range::new(Position::new(15, 19), Position::new(24, 9));
capabilities.experimental = None;
assert_eq!(
token_descr(&mut dc, &url, &horizontal_box.start)
.and_then(|(token, _)| get_code_actions(&mut dc, token, &capabilities)),
None
);
capabilities.experimental = Some(serde_json::json!({"snippetTextEdit": true}));
assert_eq!(
token_descr(&mut dc, &url, &horizontal_box.start)
.and_then(|(token, _)| get_code_actions(&mut dc, token, &capabilities)),
Some(vec![
CodeActionOrCommand::CodeAction(lsp_types::CodeAction {
title: "Wrap in element".into(),
kind: Some(lsp_types::CodeActionKind::REFACTOR),
edit: Some(WorkspaceEdit {
changes: Some(
std::iter::once((
url.clone(),
vec![TextEdit::new(
horizontal_box,
r#"${0:element} {
HorizontalBox {
alignment: end;
Button { text: "Cancel"; }
Button {
text: "OK";
primary: true;
}
}
}"#
.into()
)]
))
.collect()
),
..Default::default()
}),
..Default::default()
}),
CodeActionOrCommand::CodeAction(lsp_types::CodeAction {
title: "Remove element".into(),
kind: Some(lsp_types::CodeActionKind::REFACTOR),
edit: Some(WorkspaceEdit {
changes: Some(
std::iter::once((
url.clone(),
vec![TextEdit::new(
horizontal_box,
r#"Button { text: "Cancel"; }
Button {
text: "OK";
primary: true;
}"#
.into()
)]
))
.collect()
),
..Default::default()
}),
..Default::default()
})
])
);
}
}
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