oak_json/builder/
mod.rs

1use crate::{
2    JsonLanguage,
3    ast::{JsonNull, JsonRoot, JsonValue},
4    lexer::JsonLexer,
5    parser::JsonParser,
6};
7use oak_core::{Builder, BuilderCache, Lexer, OakDiagnostics, Parser, SourceText, TextEdit, parser::session::ParseSession, source::Source};
8
9/// JSON AST 构建器
10#[derive(Clone)]
11pub struct JsonBuilder<'config> {
12    config: &'config JsonLanguage,
13}
14
15impl<'config> JsonBuilder<'config> {
16    pub fn new(config: &'config JsonLanguage) -> Self {
17        Self { config }
18    }
19}
20
21impl<'config> Builder<JsonLanguage> for JsonBuilder<'config> {
22    fn build<'a, S: Source + ?Sized>(&self, source: &S, edits: &[TextEdit], _cache: &'a mut impl BuilderCache<JsonLanguage>) -> OakDiagnostics<JsonRoot> {
23        let parser = JsonParser::new(self.config);
24        let lexer = JsonLexer::new(self.config);
25
26        let mut cache = ParseSession::<JsonLanguage>::default();
27        lexer.lex(source, edits, &mut cache);
28        let parse_result = parser.parse(source, edits, &mut cache);
29
30        match parse_result.result {
31            Ok(green_tree) => {
32                let source_text = SourceText::new(source.get_text_in((0..source.length()).into()));
33                match self.build_root(green_tree.clone(), &source_text) {
34                    Ok(ast_root) => OakDiagnostics { result: Ok(ast_root), diagnostics: parse_result.diagnostics },
35                    Err(build_error) => {
36                        let mut diagnostics = parse_result.diagnostics;
37                        diagnostics.push(build_error.clone());
38                        OakDiagnostics { result: Err(build_error), diagnostics }
39                    }
40                }
41            }
42            Err(parse_error) => OakDiagnostics { result: Err(parse_error), diagnostics: parse_result.diagnostics },
43        }
44    }
45}
46
47impl<'config> JsonBuilder<'config> {
48    fn build_root(&self, _green_tree: oak_core::GreenNode<JsonLanguage>, _source: &SourceText) -> Result<JsonRoot, oak_core::OakError> {
49        // TODO: 从 GreenNode 构建 AST
50        Ok(JsonRoot { value: JsonValue::Null(JsonNull { span: (0..0).into() }) })
51    }
52}
oak_json/builder/mod.rs

oak_json/builder/
mod.rs
