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|
use ra_db::FileId;
use ra_syntax::{
SyntaxNode, SyntaxNodePtr, AstNode, SmolStr, TextRange, ast,
SyntaxKind::{self, NAME},
};
use hir::{ModuleSource, FieldSource, Name, ImplItem};
use crate::{FileSymbol, db::RootDatabase};
/// `NavigationTarget` represents and element in the editor's UI which you can
/// click on to navigate to a particular piece of code.
///
/// Typically, a `NavigationTarget` corresponds to some element in the source
/// code, like a function or a struct, but this is not strictly required.
#[derive(Debug, Clone)]
pub struct NavigationTarget {
file_id: FileId,
name: SmolStr,
kind: SyntaxKind,
full_range: TextRange,
focus_range: Option<TextRange>,
container_name: Option<SmolStr>,
}
impl NavigationTarget {
/// When `focus_range` is specified, returns it. otherwise
/// returns `full_range`
pub fn range(&self) -> TextRange {
self.focus_range.unwrap_or(self.full_range)
}
pub fn name(&self) -> &SmolStr {
&self.name
}
pub fn container_name(&self) -> Option<&SmolStr> {
self.container_name.as_ref()
}
pub fn kind(&self) -> SyntaxKind {
self.kind
}
pub fn file_id(&self) -> FileId {
self.file_id
}
pub fn full_range(&self) -> TextRange {
self.full_range
}
/// A "most interesting" range withing the `full_range`.
///
/// Typically, `full_range` is the whole syntax node,
/// including doc comments, and `focus_range` is the range of the identifier.
pub fn focus_range(&self) -> Option<TextRange> {
self.focus_range
}
pub(crate) fn from_bind_pat(file_id: FileId, pat: &ast::BindPat) -> NavigationTarget {
NavigationTarget::from_named(file_id, pat)
}
pub(crate) fn from_symbol(symbol: FileSymbol) -> NavigationTarget {
NavigationTarget {
file_id: symbol.file_id,
name: symbol.name.clone(),
kind: symbol.ptr.kind(),
full_range: symbol.ptr.range(),
focus_range: symbol.name_range,
container_name: symbol.container_name.clone(),
}
}
pub(crate) fn from_scope_entry(
file_id: FileId,
name: Name,
ptr: SyntaxNodePtr,
) -> NavigationTarget {
NavigationTarget {
file_id,
name: name.to_string().into(),
full_range: ptr.range(),
focus_range: None,
kind: NAME,
container_name: None,
}
}
pub(crate) fn from_module(db: &RootDatabase, module: hir::Module) -> NavigationTarget {
let (file_id, source) = module.definition_source(db);
let file_id = file_id.as_original_file();
let name = module.name(db).map(|it| it.to_string().into()).unwrap_or_default();
match source {
ModuleSource::SourceFile(node) => {
NavigationTarget::from_syntax(file_id, name, None, node.syntax())
}
ModuleSource::Module(node) => {
NavigationTarget::from_syntax(file_id, name, None, node.syntax())
}
}
}
pub(crate) fn from_module_to_decl(db: &RootDatabase, module: hir::Module) -> NavigationTarget {
let name = module.name(db).map(|it| it.to_string().into()).unwrap_or_default();
if let Some((file_id, source)) = module.declaration_source(db) {
let file_id = file_id.as_original_file();
return NavigationTarget::from_syntax(file_id, name, None, source.syntax());
}
NavigationTarget::from_module(db, module)
}
pub(crate) fn from_function(db: &RootDatabase, func: hir::Function) -> NavigationTarget {
let (file_id, fn_def) = func.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*fn_def)
}
pub(crate) fn from_field(db: &RootDatabase, field: hir::StructField) -> NavigationTarget {
let (file_id, field) = field.source(db);
let file_id = file_id.original_file(db);
match field {
FieldSource::Named(it) => NavigationTarget::from_named(file_id, &*it),
FieldSource::Pos(it) => {
NavigationTarget::from_syntax(file_id, "".into(), None, it.syntax())
}
}
}
pub(crate) fn from_def(db: &RootDatabase, module_def: hir::ModuleDef) -> NavigationTarget {
match module_def {
hir::ModuleDef::Module(module) => NavigationTarget::from_module(db, module),
hir::ModuleDef::Function(func) => NavigationTarget::from_function(db, func),
hir::ModuleDef::Struct(s) => {
let (file_id, node) = s.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*node)
}
hir::ModuleDef::Const(s) => {
let (file_id, node) = s.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*node)
}
hir::ModuleDef::Static(s) => {
let (file_id, node) = s.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*node)
}
hir::ModuleDef::Enum(e) => {
let (file_id, node) = e.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*node)
}
hir::ModuleDef::EnumVariant(var) => {
let (file_id, node) = var.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*node)
}
hir::ModuleDef::Trait(e) => {
let (file_id, node) = e.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*node)
}
hir::ModuleDef::TypeAlias(e) => {
let (file_id, node) = e.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*node)
}
}
}
pub(crate) fn from_impl_block(
db: &RootDatabase,
impl_block: hir::ImplBlock,
) -> NavigationTarget {
let (file_id, node) = impl_block.source(db);
NavigationTarget::from_syntax(
file_id.as_original_file(),
"impl".into(),
None,
node.syntax(),
)
}
pub(crate) fn from_impl_item(db: &RootDatabase, impl_item: hir::ImplItem) -> NavigationTarget {
match impl_item {
ImplItem::Method(f) => NavigationTarget::from_function(db, f),
ImplItem::Const(c) => {
let (file_id, node) = c.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*node)
}
ImplItem::TypeAlias(a) => {
let (file_id, node) = a.source(db);
NavigationTarget::from_named(file_id.original_file(db), &*node)
}
}
}
#[cfg(test)]
pub(crate) fn assert_match(&self, expected: &str) {
let actual = self.debug_render();
test_utils::assert_eq_text!(expected.trim(), actual.trim(),);
}
#[cfg(test)]
pub(crate) fn debug_render(&self) -> String {
let mut buf = format!(
"{} {:?} {:?} {:?}",
self.name(),
self.kind(),
self.file_id(),
self.full_range()
);
if let Some(focus_range) = self.focus_range() {
buf.push_str(&format!(" {:?}", focus_range))
}
if let Some(container_name) = self.container_name() {
buf.push_str(&format!(" {}", container_name))
}
buf
}
/// Allows `NavigationTarget` to be created from a `NameOwner`
pub(crate) fn from_named(file_id: FileId, node: &impl ast::NameOwner) -> NavigationTarget {
let name = node.name().map(|it| it.text().clone()).unwrap_or_default();
let focus_range = node.name().map(|it| it.syntax().range());
NavigationTarget::from_syntax(file_id, name, focus_range, node.syntax())
}
fn from_syntax(
file_id: FileId,
name: SmolStr,
focus_range: Option<TextRange>,
node: &SyntaxNode,
) -> NavigationTarget {
NavigationTarget {
file_id,
name,
kind: node.kind(),
full_range: node.range(),
focus_range,
// ptr: Some(LocalSyntaxPtr::new(node)),
container_name: None,
}
}
}
|
