language-servers/rust-analyzer
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This commit is contained in:
Aleksey Kladov 2019-03-30 13:25:53 +03:00
parent dec9bde108
commit 9e213385c9
50 changed files with 1026 additions and 1227 deletions
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33
crates/ra_ide_api/src/syntax_tree.rs
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@ -1,8 +1,9 @@
use ra_db::SourceDatabase;
use crate::db::RootDatabase;
use ra_syntax::{
SourceFile, SyntaxNode, TextRange, AstNode,
algo::{self, visit::{visitor, Visitor}}, ast::{self, AstToken}
SourceFile, TextRange, AstNode, SyntaxToken, SyntaxElement,
algo,
SyntaxKind::{STRING, RAW_STRING},
};
pub use ra_db::FileId;
@ -14,11 +15,15 @@ pub(crate) fn syntax_tree(
) -> String {
if let Some(text_range) = text_range {
let file = db.parse(file_id);
let node = algo::find_covering_node(file.syntax(), text_range);
if let Some(tree) = syntax_tree_for_string(node, text_range) {
return tree;
}
let node = match algo::find_covering_element(file.syntax(), text_range) {
SyntaxElement::Node(node) => node,
SyntaxElement::Token(token) => {
if let Some(tree) = syntax_tree_for_string(token, text_range) {
return tree;
}
token.parent()
}
};
node.debug_dump()
} else {
@ -28,19 +33,19 @@ pub(crate) fn syntax_tree(
/// Attempts parsing the selected contents of a string literal
/// as rust syntax and returns its syntax tree
fn syntax_tree_for_string(node: &SyntaxNode, text_range: TextRange) -> Option<String> {
fn syntax_tree_for_string(token: SyntaxToken, text_range: TextRange) -> Option<String> {
// When the range is inside a string
// we'll attempt parsing it as rust syntax
// to provide the syntax tree of the contents of the string
visitor()
.visit(|node: &ast::String| syntax_tree_for_token(node, text_range))
.visit(|node: &ast::RawString| syntax_tree_for_token(node, text_range))
.accept(node)?
match token.kind() {
STRING | RAW_STRING => syntax_tree_for_token(token, text_range),
_ => None,
}
}
fn syntax_tree_for_token<T: AstToken>(node: &T, text_range: TextRange) -> Option<String> {
fn syntax_tree_for_token(node: SyntaxToken, text_range: TextRange) -> Option<String> {
// Range of the full node
let node_range = node.syntax().range();
let node_range = node.range();
let text = node.text().to_string();
// We start at some point inside the node