2021-01-20 08:25:34 -06:00
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use ide_db::SymbolKind;
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2020-08-12 11:26:51 -05:00
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use syntax::{
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2020-07-30 13:51:43 -05:00
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ast::{self, AttrsOwner, GenericParamsOwner, NameOwner},
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2021-03-11 10:14:41 -06:00
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match_ast, AstNode, AstToken, NodeOrToken, SourceFile, SyntaxNode, SyntaxToken, TextRange,
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WalkEvent,
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2019-01-02 07:29:08 -06:00
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};
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#[derive(Debug, Clone)]
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pub struct StructureNode {
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pub parent: Option<usize>,
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pub label: String,
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pub navigation_range: TextRange,
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pub node_range: TextRange,
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pub kind: SymbolKind,
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pub detail: Option<String>,
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pub deprecated: bool,
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2019-01-02 07:29:08 -06:00
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}
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2020-05-30 18:54:54 -05:00
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// Feature: File Structure
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//
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// Provides a tree of the symbols defined in the file. Can be used to
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//
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// * fuzzy search symbol in a file (super useful)
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// * draw breadcrumbs to describe the context around the cursor
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// * draw outline of the file
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//
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// |===
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// | Editor | Shortcut
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//
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// | VS Code | kbd:[Ctrl+Shift+O]
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// |===
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2020-11-02 09:31:38 -06:00
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pub(crate) fn file_structure(file: &SourceFile) -> Vec<StructureNode> {
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2019-01-02 07:29:08 -06:00
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let mut res = Vec::new();
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let mut stack = Vec::new();
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2021-03-11 10:14:41 -06:00
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for event in file.syntax().preorder_with_tokens() {
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match event {
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WalkEvent::Enter(NodeOrToken::Node(node)) => {
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if let Some(mut symbol) = structure_node(&node) {
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symbol.parent = stack.last().copied();
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stack.push(res.len());
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res.push(symbol);
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}
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}
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2021-03-11 10:14:41 -06:00
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WalkEvent::Leave(NodeOrToken::Node(node)) => {
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2019-07-19 04:56:47 -05:00
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if structure_node(&node).is_some() {
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stack.pop().unwrap();
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}
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}
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2021-03-11 10:14:41 -06:00
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WalkEvent::Enter(NodeOrToken::Token(token)) => {
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if let Some(mut symbol) = structure_token(token) {
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symbol.parent = stack.last().copied();
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stack.push(res.len());
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res.push(symbol);
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}
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}
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WalkEvent::Leave(NodeOrToken::Token(token)) => {
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if structure_token(token).is_some() {
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stack.pop().unwrap();
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}
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}
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2019-01-02 07:29:08 -06:00
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}
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}
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res
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}
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2019-01-07 07:53:24 -06:00
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fn structure_node(node: &SyntaxNode) -> Option<StructureNode> {
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2020-12-17 05:29:05 -06:00
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fn decl<N: NameOwner + AttrsOwner>(node: N, kind: SymbolKind) -> Option<StructureNode> {
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decl_with_detail(&node, None, kind)
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}
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fn decl_with_type_ref<N: NameOwner + AttrsOwner>(
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node: &N,
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type_ref: Option<ast::Type>,
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kind: SymbolKind,
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) -> Option<StructureNode> {
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let detail = type_ref.map(|type_ref| {
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let mut detail = String::new();
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collapse_ws(type_ref.syntax(), &mut detail);
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detail
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});
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decl_with_detail(node, detail, kind)
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}
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fn decl_with_detail<N: NameOwner + AttrsOwner>(
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node: &N,
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detail: Option<String>,
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kind: SymbolKind,
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) -> Option<StructureNode> {
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let name = node.name()?;
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Some(StructureNode {
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parent: None,
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label: name.text().to_string(),
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navigation_range: name.syntax().text_range(),
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node_range: node.syntax().text_range(),
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kind,
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detail,
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deprecated: node.attrs().filter_map(|x| x.simple_name()).any(|x| x == "deprecated"),
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})
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}
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2019-01-24 11:21:17 -06:00
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fn collapse_ws(node: &SyntaxNode, output: &mut String) {
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let mut can_insert_ws = false;
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node.text().for_each_chunk(|chunk| {
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for line in chunk.lines() {
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let line = line.trim();
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if line.is_empty() {
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if can_insert_ws {
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output.push(' ');
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2019-07-19 04:56:47 -05:00
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can_insert_ws = false;
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}
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} else {
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output.push_str(line);
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can_insert_ws = true;
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2019-01-24 11:21:17 -06:00
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}
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}
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2019-07-19 12:29:59 -05:00
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})
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2019-01-24 11:21:17 -06:00
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}
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2019-10-05 09:03:03 -05:00
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match_ast! {
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match node {
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2020-07-30 07:51:08 -05:00
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ast::Fn(it) => {
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2019-10-05 09:03:03 -05:00
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let mut detail = String::from("fn");
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2020-07-30 08:36:21 -05:00
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if let Some(type_param_list) = it.generic_param_list() {
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2019-10-05 09:03:03 -05:00
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collapse_ws(type_param_list.syntax(), &mut detail);
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}
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if let Some(param_list) = it.param_list() {
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collapse_ws(param_list.syntax(), &mut detail);
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}
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if let Some(ret_type) = it.ret_type() {
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detail.push_str(" ");
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collapse_ws(ret_type.syntax(), &mut detail);
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}
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2019-01-24 11:21:17 -06:00
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2020-12-17 05:29:05 -06:00
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decl_with_detail(&it, Some(detail), SymbolKind::Function)
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2019-10-05 09:03:03 -05:00
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},
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ast::Struct(it) => decl(it, SymbolKind::Struct),
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ast::Union(it) => decl(it, SymbolKind::Union),
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ast::Enum(it) => decl(it, SymbolKind::Enum),
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ast::Variant(it) => decl(it, SymbolKind::Variant),
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ast::Trait(it) => decl(it, SymbolKind::Trait),
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ast::Module(it) => decl(it, SymbolKind::Module),
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ast::TypeAlias(it) => decl_with_type_ref(&it, it.ty(), SymbolKind::TypeAlias),
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ast::RecordField(it) => decl_with_type_ref(&it, it.ty(), SymbolKind::Field),
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ast::Const(it) => decl_with_type_ref(&it, it.ty(), SymbolKind::Const),
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ast::Static(it) => decl_with_type_ref(&it, it.ty(), SymbolKind::Static),
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2020-07-30 11:28:28 -05:00
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ast::Impl(it) => {
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2020-07-31 13:23:52 -05:00
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let target_type = it.self_ty()?;
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let target_trait = it.trait_();
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2019-10-05 09:03:03 -05:00
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let label = match target_trait {
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None => format!("impl {}", target_type.syntax().text()),
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Some(t) => {
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format!("impl {} for {}", t.syntax().text(), target_type.syntax().text(),)
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}
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};
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let node = StructureNode {
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parent: None,
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label,
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navigation_range: target_type.syntax().text_range(),
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node_range: it.syntax().text_range(),
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2020-12-17 05:29:05 -06:00
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kind: SymbolKind::Impl,
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2019-10-05 09:03:03 -05:00
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detail: None,
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deprecated: false,
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};
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Some(node)
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},
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ast::MacroRules(it) => decl(it, SymbolKind::Macro),
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_ => None,
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}
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}
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2019-01-02 07:29:08 -06:00
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}
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2021-03-11 10:14:41 -06:00
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fn structure_token(token: SyntaxToken) -> Option<StructureNode> {
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if let Some(comment) = ast::Comment::cast(token) {
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let text = comment.text().trim();
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2021-03-12 03:01:43 -06:00
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if let Some(region_name) = text.strip_prefix("// region:").map(str::trim) {
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2021-03-11 10:14:41 -06:00
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return Some(StructureNode {
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parent: None,
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label: region_name.to_string(),
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navigation_range: comment.syntax().text_range(),
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node_range: comment.syntax().text_range(),
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kind: SymbolKind::Region,
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detail: None,
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deprecated: false,
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});
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}
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}
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None
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}
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2019-01-02 07:29:08 -06:00
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#[cfg(test)]
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mod tests {
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2020-08-21 06:19:31 -05:00
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use expect_test::{expect, Expect};
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2020-07-01 10:59:44 -05:00
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2019-01-02 07:29:08 -06:00
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use super::*;
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2020-07-01 10:59:44 -05:00
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fn check(ra_fixture: &str, expect: Expect) {
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let file = SourceFile::parse(ra_fixture).ok().unwrap();
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let structure = file_structure(&file);
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expect.assert_debug_eq(&structure)
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}
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2019-01-02 07:29:08 -06:00
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#[test]
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fn test_file_structure() {
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check(
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2019-01-02 07:29:08 -06:00
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r#"
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struct Foo {
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x: i32
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}
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mod m {
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2019-01-24 11:21:17 -06:00
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fn bar1() {}
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fn bar2<T>(t: T) -> T {}
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fn bar3<A,
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B>(a: A,
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b: B) -> Vec<
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u32
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> {}
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2019-01-02 07:29:08 -06:00
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}
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enum E { X, Y(i32) }
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type T = ();
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static S: i32 = 92;
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const C: i32 = 92;
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impl E {}
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impl fmt::Debug for E {}
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2019-02-05 16:05:46 -06:00
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2019-06-28 16:08:02 -05:00
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macro_rules! mc {
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() => {}
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}
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2020-01-10 14:49:46 -06:00
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#[macro_export]
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macro_rules! mcexp {
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() => {}
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}
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2020-01-10 17:06:31 -06:00
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/// Doc comment
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macro_rules! mcexp {
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() => {}
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}
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2019-02-05 16:05:46 -06:00
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#[deprecated]
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fn obsolete() {}
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#[deprecated(note = "for awhile")]
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fn very_obsolete() {}
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2021-03-11 10:14:41 -06:00
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// region: Some region name
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// endregion
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2021-03-14 05:52:04 -05:00
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// region: dontpanic
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mod m {
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fn f() {}
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// endregion
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fn g() {}
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}
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2019-01-02 07:29:08 -06:00
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"#,
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2020-07-01 10:59:44 -05:00
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expect![[r#"
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[
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StructureNode {
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parent: None,
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label: "Foo",
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navigation_range: 8..11,
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node_range: 1..26,
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2020-12-17 05:29:05 -06:00
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kind: Struct,
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2020-07-01 10:59:44 -05:00
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detail: None,
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deprecated: false,
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},
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StructureNode {
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parent: Some(
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0,
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),
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label: "x",
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navigation_range: 18..19,
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node_range: 18..24,
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2020-12-17 05:29:05 -06:00
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kind: Field,
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2020-07-01 10:59:44 -05:00
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detail: Some(
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"i32",
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),
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deprecated: false,
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},
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StructureNode {
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parent: None,
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label: "m",
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navigation_range: 32..33,
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node_range: 28..158,
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2020-12-17 05:29:05 -06:00
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kind: Module,
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2020-07-01 10:59:44 -05:00
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detail: None,
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deprecated: false,
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},
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StructureNode {
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parent: Some(
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2,
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),
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label: "bar1",
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navigation_range: 43..47,
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node_range: 40..52,
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2020-12-17 05:29:05 -06:00
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kind: Function,
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2020-07-01 10:59:44 -05:00
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detail: Some(
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"fn()",
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),
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deprecated: false,
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},
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StructureNode {
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parent: Some(
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2,
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),
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label: "bar2",
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navigation_range: 60..64,
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node_range: 57..81,
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2020-12-17 05:29:05 -06:00
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kind: Function,
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2020-07-01 10:59:44 -05:00
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detail: Some(
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"fn<T>(t: T) -> T",
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),
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deprecated: false,
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},
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StructureNode {
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|
|
|
parent: Some(
|
|
|
|
2,
|
|
|
|
),
|
|
|
|
label: "bar3",
|
|
|
|
navigation_range: 89..93,
|
|
|
|
node_range: 86..156,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Function,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: Some(
|
|
|
|
"fn<A, B>(a: A, b: B) -> Vec< u32 >",
|
|
|
|
),
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "E",
|
|
|
|
navigation_range: 165..166,
|
|
|
|
node_range: 160..180,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Enum,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: Some(
|
|
|
|
6,
|
|
|
|
),
|
|
|
|
label: "X",
|
|
|
|
navigation_range: 169..170,
|
|
|
|
node_range: 169..170,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Variant,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: Some(
|
|
|
|
6,
|
|
|
|
),
|
|
|
|
label: "Y",
|
|
|
|
navigation_range: 172..173,
|
|
|
|
node_range: 172..178,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Variant,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "T",
|
|
|
|
navigation_range: 186..187,
|
|
|
|
node_range: 181..193,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: TypeAlias,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: Some(
|
|
|
|
"()",
|
|
|
|
),
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "S",
|
|
|
|
navigation_range: 201..202,
|
|
|
|
node_range: 194..213,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Static,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: Some(
|
|
|
|
"i32",
|
|
|
|
),
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "C",
|
|
|
|
navigation_range: 220..221,
|
|
|
|
node_range: 214..232,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Const,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: Some(
|
|
|
|
"i32",
|
|
|
|
),
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "impl E",
|
|
|
|
navigation_range: 239..240,
|
|
|
|
node_range: 234..243,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Impl,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "impl fmt::Debug for E",
|
|
|
|
navigation_range: 265..266,
|
|
|
|
node_range: 245..269,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Impl,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "mc",
|
|
|
|
navigation_range: 284..286,
|
|
|
|
node_range: 271..303,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Macro,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "mcexp",
|
|
|
|
navigation_range: 334..339,
|
|
|
|
node_range: 305..356,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Macro,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "mcexp",
|
|
|
|
navigation_range: 387..392,
|
|
|
|
node_range: 358..409,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Macro,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "obsolete",
|
|
|
|
navigation_range: 428..436,
|
|
|
|
node_range: 411..441,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Function,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: Some(
|
|
|
|
"fn()",
|
|
|
|
),
|
|
|
|
deprecated: true,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "very_obsolete",
|
|
|
|
navigation_range: 481..494,
|
|
|
|
node_range: 443..499,
|
2020-12-17 05:29:05 -06:00
|
|
|
kind: Function,
|
2020-07-01 10:59:44 -05:00
|
|
|
detail: Some(
|
|
|
|
"fn()",
|
|
|
|
),
|
|
|
|
deprecated: true,
|
|
|
|
},
|
2021-03-11 10:14:41 -06:00
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "Some region name",
|
|
|
|
navigation_range: 501..528,
|
|
|
|
node_range: 501..528,
|
|
|
|
kind: Region,
|
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
2021-03-14 05:52:04 -05:00
|
|
|
StructureNode {
|
|
|
|
parent: None,
|
|
|
|
label: "m",
|
|
|
|
navigation_range: 568..569,
|
|
|
|
node_range: 543..606,
|
|
|
|
kind: Module,
|
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: Some(
|
|
|
|
20,
|
|
|
|
),
|
|
|
|
label: "dontpanic",
|
|
|
|
navigation_range: 543..563,
|
|
|
|
node_range: 543..563,
|
|
|
|
kind: Region,
|
|
|
|
detail: None,
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: Some(
|
|
|
|
20,
|
|
|
|
),
|
|
|
|
label: "f",
|
|
|
|
navigation_range: 575..576,
|
|
|
|
node_range: 572..581,
|
|
|
|
kind: Function,
|
|
|
|
detail: Some(
|
|
|
|
"fn()",
|
|
|
|
),
|
|
|
|
deprecated: false,
|
|
|
|
},
|
|
|
|
StructureNode {
|
|
|
|
parent: Some(
|
|
|
|
20,
|
|
|
|
),
|
|
|
|
label: "g",
|
|
|
|
navigation_range: 598..599,
|
|
|
|
node_range: 582..604,
|
|
|
|
kind: Function,
|
|
|
|
detail: Some(
|
|
|
|
"fn()",
|
|
|
|
),
|
|
|
|
deprecated: false,
|
|
|
|
},
|
2020-07-01 10:59:44 -05:00
|
|
|
]
|
|
|
|
"#]],
|
|
|
|
);
|
2019-01-02 07:29:08 -06:00
|
|
|
}
|
|
|
|
}
|