Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide/src/view_syntax_tree.rs')
| -rw-r--r-- | crates/ide/src/view_syntax_tree.rs | 107 |
1 files changed, 68 insertions, 39 deletions
diff --git a/crates/ide/src/view_syntax_tree.rs b/crates/ide/src/view_syntax_tree.rs index 218ee15a7d..407720864b 100644 --- a/crates/ide/src/view_syntax_tree.rs +++ b/crates/ide/src/view_syntax_tree.rs @@ -1,41 +1,50 @@ use hir::Semantics; -use ide_db::{FileId, RootDatabase}; -use span::TextRange; +use ide_db::{ + line_index::{LineCol, LineIndex}, + FileId, LineIndexDatabase, RootDatabase, +}; +use span::{TextRange, TextSize}; use stdx::format_to; use syntax::{ ast::{self, IsString}, AstNode, AstToken, NodeOrToken, SourceFile, SyntaxNode, SyntaxToken, WalkEvent, }; +use triomphe::Arc; // Feature: Show Syntax Tree // // Shows a tree view with the syntax tree of the current file // -// |=== -// | Editor | Panel Name -// -// | VS Code | **Rust Syntax Tree** -// |=== +// | Editor | Panel Name | +// |---------|-------------| +// | VS Code | **Rust Syntax Tree** | pub(crate) fn view_syntax_tree(db: &RootDatabase, file_id: FileId) -> String { let sema = Semantics::new(db); + let line_index = db.line_index(file_id); let parse = sema.parse_guess_edition(file_id); - syntax_node_to_json(parse.syntax(), None) + + let ctx = SyntaxTreeCtx { line_index, in_string: None }; + + syntax_node_to_json(parse.syntax(), &ctx) } -fn syntax_node_to_json(node: &SyntaxNode, ctx: Option<InStringCtx>) -> String { +fn syntax_node_to_json(node: &SyntaxNode, ctx: &SyntaxTreeCtx) -> String { let mut result = String::new(); for event in node.preorder_with_tokens() { match event { WalkEvent::Enter(it) => { let kind = it.kind(); - let (text_range, inner_range_str) = match &ctx { - Some(ctx) => { + let (text_range, inner_range_str) = match &ctx.in_string { + Some(in_string) => { + let start_pos = TextPosition::new(&ctx.line_index, it.text_range().start()); + let end_pos = TextPosition::new(&ctx.line_index, it.text_range().end()); + let inner_start: u32 = it.text_range().start().into(); - let inner_end: u32 = it.text_range().end().into(); + let inner_end: u32 = it.text_range().start().into(); - let mut true_start = inner_start + ctx.offset; - let mut true_end = inner_end + ctx.offset; - for pos in &ctx.marker_positions { + let mut true_start = inner_start + in_string.offset; + let mut true_end = inner_end + in_string.offset; + for pos in &in_string.marker_positions { if *pos >= inner_end { break; } @@ -48,39 +57,33 @@ fn syntax_node_to_json(node: &SyntaxNode, ctx: Option<InStringCtx>) -> String { let true_range = TextRange::new(true_start.into(), true_end.into()); - ( - true_range, - format!( - r#","istart":{:?},"iend":{:?}"#, - it.text_range().start(), - it.text_range().end() - ), - ) + (true_range, format!(r#","istart":{start_pos},"iend":{end_pos}"#,)) } None => (it.text_range(), "".to_owned()), }; - let start = text_range.start(); - let end = text_range.end(); + + let start = TextPosition::new(&ctx.line_index, text_range.start()); + let end = TextPosition::new(&ctx.line_index, text_range.end()); match it { NodeOrToken::Node(_) => { format_to!( result, - r#"{{"type":"Node","kind":"{kind:?}","start":{start:?},"end":{end:?}{inner_range_str},"children":["# + r#"{{"type":"Node","kind":"{kind:?}","start":{start},"end":{end}{inner_range_str},"children":["# ); } NodeOrToken::Token(token) => { let comma = if token.next_sibling_or_token().is_some() { "," } else { "" }; - match parse_rust_string(token) { + match parse_rust_string(token, ctx) { Some(parsed) => { format_to!( result, - r#"{{"type":"Node","kind":"{kind:?}","start":{start:?},"end":{end:?}{inner_range_str},"children":[{parsed}]}}{comma}"# + r#"{{"type":"Node","kind":"{kind:?}","start":{start},"end":{end}{inner_range_str},"children":[{parsed}]}}{comma}"# ); } None => format_to!( result, - r#"{{"type":"Token","kind":"{kind:?}","start":{start:?},"end":{end:?}{inner_range_str}}}{comma}"# + r#"{{"type":"Token","kind":"{kind:?}","start":{start},"end":{end}{inner_range_str}}}{comma}"# ), } } @@ -99,7 +102,26 @@ fn syntax_node_to_json(node: &SyntaxNode, ctx: Option<InStringCtx>) -> String { result } -fn parse_rust_string(token: SyntaxToken) -> Option<String> { +struct TextPosition { + offset: TextSize, + line: u32, + col: u32, +} + +impl std::fmt::Display for TextPosition { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + write!(f, "[{:?},{},{}]", self.offset, self.line, self.col) + } +} + +impl TextPosition { + pub(crate) fn new(line_index: &LineIndex, offset: TextSize) -> Self { + let LineCol { line, col } = line_index.line_col(offset); + Self { offset, line, col } + } +} + +fn parse_rust_string(token: SyntaxToken, ctx: &SyntaxTreeCtx) -> Option<String> { let string_node = ast::String::cast(token)?; let text = string_node.value().ok()?; @@ -128,13 +150,20 @@ fn parse_rust_string(token: SyntaxToken) -> Option<String> { return None; } - Some(syntax_node_to_json( - node, - Some(InStringCtx { + let ctx = SyntaxTreeCtx { + line_index: ctx.line_index.clone(), + in_string: Some(InStringCtx { offset: string_node.text_range_between_quotes()?.start().into(), marker_positions, }), - )) + }; + + Some(syntax_node_to_json(node, &ctx)) +} + +struct SyntaxTreeCtx { + line_index: Arc<LineIndex>, + in_string: Option<InStringCtx>, } struct InStringCtx { @@ -160,7 +189,7 @@ mod tests { check( r#"fn foo() {}"#, expect![[ - 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r#"{"type":"Node","kind":"SOURCE_FILE","start":[0,0,0],"end":[11,0,11],"children":[{"type":"Node","kind":"FN","start":[0,0,0],"end":[11,0,11],"children":[{"type":"Token","kind":"FN_KW","start":[0,0,0],"end":[2,0,2]},{"type":"Token","kind":"WHITESPACE","start":[2,0,2],"end":[3,0,3]},{"type":"Node","kind":"NAME","start":[3,0,3],"end":[6,0,6],"children":[{"type":"Token","kind":"IDENT","start":[3,0,3],"end":[6,0,6]}]},{"type":"Node","kind":"PARAM_LIST","start":[6,0,6],"end":[8,0,8],"children":[{"type":"Token","kind":"L_PAREN","start":[6,0,6],"end":[7,0,7]},{"type":"Token","kind":"R_PAREN","start":[7,0,7],"end":[8,0,8]}]},{"type":"Token","kind":"WHITESPACE","start":[8,0,8],"end":[9,0,9]},{"type":"Node","kind":"BLOCK_EXPR","start":[9,0,9],"end":[11,0,11],"children":[{"type":"Node","kind":"STMT_LIST","start":[9,0,9],"end":[11,0,11],"children":[{"type":"Token","kind":"L_CURLY","start":[9,0,9],"end":[10,0,10]},{"type":"Token","kind":"R_CURLY","start":[10,0,10],"end":[11,0,11]}]}]}]}]}"# ]], ); @@ -173,7 +202,7 @@ fn test() { ", ""); }"#, expect![[ - 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+ 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