zen_expression/intellisense/
mod.rs

1use crate::arena::UnsafeArena;
2use crate::intellisense::scope::IntelliSenseScope;
3use crate::intellisense::types::provider::TypesProvider;
4use crate::lexer::Lexer;
5use crate::parser::{Node, Parser};
6use crate::variable::VariableType;
7use serde::Serialize;
8use std::cell::RefCell;
9
10mod scope;
11mod types;
12
13#[derive(Debug, Serialize)]
14#[serde(rename_all = "camelCase")]
15pub struct IntelliSenseToken {
16    pub span: (u32, u32),
17    pub kind: VariableType,
18    pub node_kind: &'static str,
19    pub error: Option<String>,
20}
21
22pub struct IntelliSense<'arena> {
23    arena: UnsafeArena<'arena>,
24    lexer: Lexer<'arena>,
25}
26
27impl<'arena> IntelliSense<'arena> {
28    pub fn new() -> Self {
29        Self {
30            arena: UnsafeArena::new(),
31            lexer: Lexer::new(),
32        }
33    }
34
35    pub fn type_check(
36        &mut self,
37        source: &'arena str,
38        data: &VariableType,
39    ) -> Option<Vec<IntelliSenseToken>> {
40        let arena = self.arena.get();
41
42        let tokens = self.lexer.tokenize(source).ok()?;
43        let parser = Parser::try_new(tokens, &arena).map(|p| p.standard()).ok()?;
44
45        let parser_result = parser.with_metadata().parse();
46        let ast = parser_result.root;
47        let metadata = parser_result.metadata?;
48
49        let type_data = TypesProvider::generate(
50            ast,
51            IntelliSenseScope {
52                pointer_data: data.shallow_clone(),
53                root_data: data.shallow_clone(),
54                current_data: data.shallow_clone(),
55                ..Default::default()
56            },
57        );
58
59        let results = RefCell::new(Vec::new());
60        ast.walk(|node| {
61            let addr = node as *const Node as usize;
62            let mut r = results.borrow_mut();
63            let typ = type_data.get_type(node);
64
65            r.push(IntelliSenseToken {
66                span: node
67                    .span()
68                    .or_else(|| metadata.get(&addr).map(|s| s.span))
69                    .unwrap_or_default(),
70                node_kind: node.into(),
71                error: typ.map(|t| t.error.clone()).flatten(),
72                kind: typ
73                    .map(|t| t.kind.clone())
74                    .unwrap_or_else(|| VariableType::Any),
75            });
76        });
77
78        self.arena.with_mut(|a| a.reset());
79        Some(results.into_inner())
80    }
81
82    pub fn type_check_unary(
83        &mut self,
84        source: &'arena str,
85        data: &VariableType,
86    ) -> Option<Vec<IntelliSenseToken>> {
87        let arena = self.arena.get();
88
89        let tokens = self.lexer.tokenize(source).ok()?;
90        let parser = Parser::try_new(tokens, &arena).map(|p| p.unary()).ok()?;
91
92        let parser_result = parser.with_metadata().parse();
93        let ast = parser_result.root;
94        let metadata = parser_result.metadata?;
95
96        let type_data = TypesProvider::generate(
97            ast,
98            IntelliSenseScope {
99                pointer_data: data.shallow_clone(),
100                root_data: data.shallow_clone(),
101                current_data: data.shallow_clone(),
102                ..Default::default()
103            },
104        );
105
106        let results = RefCell::new(Vec::new());
107        ast.walk(|node| {
108            let addr = node as *const Node as usize;
109            let mut r = results.borrow_mut();
110            let typ = type_data.get_type(node);
111
112            r.push(IntelliSenseToken {
113                span: metadata.get(&addr).map(|s| s.span).unwrap_or_default(),
114                node_kind: node.into(),
115                error: typ.map(|t| t.error.clone()).flatten(),
116                kind: typ
117                    .map(|t| t.kind.clone())
118                    .unwrap_or_else(|| VariableType::Any),
119            });
120        });
121
122        self.arena.with_mut(|a| a.reset());
123        Some(results.into_inner())
124    }
125}
126
127#[cfg(test)]
128mod tests {
129    use crate::intellisense::IntelliSense;
130    use crate::variable::VariableType;
131    use serde_json::json;
132
133    #[test]
134    fn sample_test() {
135        let mut is = IntelliSense::new();
136
137        let data = json!({ "customer": { "firstName": "John", "lastName": "Doe", "array": [{"a": 5}, {"a": 6}] } });
138        let data_type: VariableType = data.into();
139
140        let typ = is.type_check("customer.array[0]", &data_type);
141        println!("{:?}", typ);
142    }
143
144    #[test]
145    fn sample_test_unary() {
146        let mut is = IntelliSense::new();
147
148        let data = json!({ "customer": { "firstName": "John", "lastName": "Doe" }, "$": 10});
149        let data_type: VariableType = data.into();
150
151        let typ = is.type_check_unary("> 10", &data_type);
152        println!("{typ:?}");
153    }
154}
zen_expression/intellisense/mod.rs

zen_expression/intellisense/
mod.rs
