From 7821c56be7fc1699f6fb748e45f4765162b75ba9 Mon Sep 17 00:00:00 2001 From: Ville Penttinen Date: Mon, 8 Apr 2019 16:04:58 +0300 Subject: Move structure to display/structure --- .../display/snapshots/tests__file_structure.snap | 182 ++++++++++++++++++++ crates/ra_ide_api/src/display/structure.rs | 190 +++++++++++++++++++++ 2 files changed, 372 insertions(+) create mode 100644 crates/ra_ide_api/src/display/snapshots/tests__file_structure.snap create mode 100644 crates/ra_ide_api/src/display/structure.rs (limited to 'crates/ra_ide_api/src/display') diff --git a/crates/ra_ide_api/src/display/snapshots/tests__file_structure.snap b/crates/ra_ide_api/src/display/snapshots/tests__file_structure.snap new file mode 100644 index 000000000..32dd99484 --- /dev/null +++ b/crates/ra_ide_api/src/display/snapshots/tests__file_structure.snap @@ -0,0 +1,182 @@ +--- +created: "2019-04-08T09:44:50.196004400Z" +creator: insta@0.7.4 +source: crates/ra_ide_api/src/display/structure.rs +expression: structure +--- +[ + StructureNode { + parent: None, + label: "Foo", + navigation_range: [8; 11), + node_range: [1; 26), + kind: STRUCT_DEF, + detail: None, + deprecated: false + }, + StructureNode { + parent: Some( + 0 + ), + label: "x", + navigation_range: [18; 19), + node_range: [18; 24), + kind: NAMED_FIELD_DEF, + detail: Some( + "i32" + ), + deprecated: false + }, + StructureNode { + parent: None, + label: "m", + navigation_range: [32; 33), + node_range: [28; 158), + kind: MODULE, + detail: None, + deprecated: false + }, + StructureNode { + parent: Some( + 2 + ), + label: "bar1", + navigation_range: [43; 47), + node_range: [40; 52), + kind: FN_DEF, + detail: Some( + "fn()" + ), + deprecated: false + }, + StructureNode { + parent: Some( + 2 + ), + label: "bar2", + navigation_range: [60; 64), + node_range: [57; 81), + kind: FN_DEF, + detail: Some( + "fn(t: T) -> T" + ), + deprecated: false + }, + StructureNode { + parent: Some( + 2 + ), + label: "bar3", + navigation_range: [89; 93), + node_range: [86; 156), + kind: FN_DEF, + detail: Some( + "fn(a: A, b: B) -> Vec< u32 >" + ), + deprecated: false + }, + StructureNode { + parent: None, + label: "E", + navigation_range: [165; 166), + node_range: [160; 180), + kind: ENUM_DEF, + detail: None, + deprecated: false + }, + StructureNode { + parent: Some( + 6 + ), + label: "X", + navigation_range: [169; 170), + node_range: [169; 170), + kind: ENUM_VARIANT, + detail: None, + deprecated: false + }, + StructureNode { + parent: Some( + 6 + ), + label: "Y", + navigation_range: [172; 173), + node_range: [172; 178), + kind: ENUM_VARIANT, + detail: None, + deprecated: false + }, + StructureNode { + parent: None, + label: "T", + navigation_range: [186; 187), + node_range: [181; 193), + kind: TYPE_ALIAS_DEF, + detail: Some( + "()" + ), + deprecated: false + }, + StructureNode { + parent: None, + label: "S", + navigation_range: [201; 202), + node_range: [194; 213), + kind: STATIC_DEF, + detail: Some( + "i32" + ), + deprecated: false + }, + StructureNode { + parent: None, + label: "C", + navigation_range: [220; 221), + node_range: [214; 232), + kind: CONST_DEF, + detail: Some( + "i32" + ), + deprecated: false + }, + StructureNode { + parent: None, + label: "impl E", + navigation_range: [239; 240), + node_range: [234; 243), + kind: IMPL_BLOCK, + detail: None, + deprecated: false + }, + StructureNode { + parent: None, + label: "impl fmt::Debug for E", + navigation_range: [265; 266), + node_range: [245; 269), + kind: IMPL_BLOCK, + detail: None, + deprecated: false + }, + StructureNode { + parent: None, + label: "obsolete", + navigation_range: [288; 296), + node_range: [271; 301), + kind: FN_DEF, + detail: Some( + "fn()" + ), + deprecated: true + }, + StructureNode { + parent: None, + label: "very_obsolete", + navigation_range: [341; 354), + node_range: [303; 359), + kind: FN_DEF, + detail: Some( + "fn()" + ), + deprecated: true + } +] diff --git a/crates/ra_ide_api/src/display/structure.rs b/crates/ra_ide_api/src/display/structure.rs new file mode 100644 index 000000000..ec2c9bbc6 --- /dev/null +++ b/crates/ra_ide_api/src/display/structure.rs @@ -0,0 +1,190 @@ +use crate::TextRange; + +use ra_syntax::{ + algo::visit::{visitor, Visitor}, + ast::{self, AttrsOwner, NameOwner, TypeParamsOwner, TypeAscriptionOwner}, + AstNode, SourceFile, SyntaxKind, SyntaxNode, WalkEvent, +}; + +#[derive(Debug, Clone)] +pub struct StructureNode { + pub parent: Option, + pub label: String, + pub navigation_range: TextRange, + pub node_range: TextRange, + pub kind: SyntaxKind, + pub detail: Option, + pub deprecated: bool, +} + +pub fn file_structure(file: &SourceFile) -> Vec { + let mut res = Vec::new(); + let mut stack = Vec::new(); + + for event in file.syntax().preorder() { + match event { + WalkEvent::Enter(node) => { + if let Some(mut symbol) = structure_node(node) { + symbol.parent = stack.last().map(|&n| n); + stack.push(res.len()); + res.push(symbol); + } + } + WalkEvent::Leave(node) => { + if structure_node(node).is_some() { + stack.pop().unwrap(); + } + } + } + } + res +} + +fn structure_node(node: &SyntaxNode) -> Option { + fn decl(node: &N) -> Option { + decl_with_detail(node, None) + } + + fn decl_with_ascription( + node: &N, + ) -> Option { + decl_with_type_ref(node, node.ascribed_type()) + } + + fn decl_with_type_ref( + node: &N, + type_ref: Option<&ast::TypeRef>, + ) -> Option { + let detail = type_ref.map(|type_ref| { + let mut detail = String::new(); + collapse_ws(type_ref.syntax(), &mut detail); + detail + }); + decl_with_detail(node, detail) + } + + fn decl_with_detail( + node: &N, + detail: Option, + ) -> Option { + let name = node.name()?; + + Some(StructureNode { + parent: None, + label: name.text().to_string(), + navigation_range: name.syntax().range(), + node_range: node.syntax().range(), + kind: node.syntax().kind(), + detail, + deprecated: node.attrs().filter_map(|x| x.as_named()).any(|x| x == "deprecated"), + }) + } + + fn collapse_ws(node: &SyntaxNode, output: &mut String) { + let mut can_insert_ws = false; + for line in node.text().chunks().flat_map(|chunk| chunk.lines()) { + let line = line.trim(); + if line.is_empty() { + if can_insert_ws { + output.push_str(" "); + can_insert_ws = false; + } + } else { + output.push_str(line); + can_insert_ws = true; + } + } + } + + visitor() + .visit(|fn_def: &ast::FnDef| { + let mut detail = String::from("fn"); + if let Some(type_param_list) = fn_def.type_param_list() { + collapse_ws(type_param_list.syntax(), &mut detail); + } + if let Some(param_list) = fn_def.param_list() { + collapse_ws(param_list.syntax(), &mut detail); + } + if let Some(ret_type) = fn_def.ret_type() { + detail.push_str(" "); + collapse_ws(ret_type.syntax(), &mut detail); + } + + decl_with_detail(fn_def, Some(detail)) + }) + .visit(decl::) + .visit(decl::) + .visit(decl::) + .visit(decl::) + .visit(decl::) + .visit(|td: &ast::TypeAliasDef| decl_with_type_ref(td, td.type_ref())) + .visit(decl_with_ascription::) + .visit(decl_with_ascription::) + .visit(decl_with_ascription::) + .visit(|im: &ast::ImplBlock| { + let target_type = im.target_type()?; + let target_trait = im.target_trait(); + let label = match target_trait { + None => format!("impl {}", target_type.syntax().text()), + Some(t) => { + format!("impl {} for {}", t.syntax().text(), target_type.syntax().text(),) + } + }; + + let node = StructureNode { + parent: None, + label, + navigation_range: target_type.syntax().range(), + node_range: im.syntax().range(), + kind: im.syntax().kind(), + detail: None, + deprecated: false, + }; + Some(node) + }) + .accept(node)? +} + +#[cfg(test)] +mod tests { + use super::*; + use insta::assert_debug_snapshot_matches; + + #[test] + fn test_file_structure() { + let file = SourceFile::parse( + r#" +struct Foo { + x: i32 +} + +mod m { + fn bar1() {} + fn bar2(t: T) -> T {} + fn bar3(a: A, + b: B) -> Vec< + u32 + > {} +} + +enum E { X, Y(i32) } +type T = (); +static S: i32 = 92; +const C: i32 = 92; + +impl E {} + +impl fmt::Debug for E {} + +#[deprecated] +fn obsolete() {} + +#[deprecated(note = "for awhile")] +fn very_obsolete() {} +"#, + ); + let structure = file_structure(&file); + assert_debug_snapshot_matches!("file_structure", structure); + } +} -- cgit v1.2.3