nargo_bridge/
lib.rs

1#![warn(missing_docs)]
2
3use nargo_types::{BridgeField, BridgeType, Result, TypeBridge};
4use std::{fs, path::Path};
5use tracing::info;
6
7/// Nargo bridge for generating TypeScript types.
8pub struct NargoBridge {
9    types: Vec<BridgeType>,
10}
11
12impl NargoBridge {
13    /// Create a new bridge instance.
14    pub fn new() -> Self {
15        Self { types: Vec::new() }
16    }
17
18    /// Register a type for bridging.
19    pub fn register<T: TypeBridge>(&mut self) {
20        self.types.push(T::bridge_info());
21    }
22
23    /// Generate TypeScript types to the output path.
24    pub fn generate(&self, output_path: &Path) -> Result<()> {
25        let mut ts_code = String::new();
26        ts_code.push_str("// Generated by nargo-bridge. DO NOT EDIT.\n\n");
27
28        for ty in &self.types {
29            ts_code.push_str(&format!("export interface {} {{\n", ty.name));
30            for field in &ty.fields {
31                let ts_type = self.map_to_ts(&field.ty);
32                ts_code.push_str(&format!("  {}: {};\n", field.name, ts_type));
33            }
34            ts_code.push_str("}\n\n");
35        }
36
37        if let Some(parent) = output_path.parent() {
38            fs::create_dir_all(parent)?;
39        }
40        fs::write(output_path, ts_code)?;
41        info!("Generated TS bridge to {}", output_path.display());
42        Ok(())
43    }
44
45    fn map_to_ts(&self, rust_type: &str) -> String {
46        match rust_type {
47            "String" | "&str" => "string".to_string(),
48            "u8" | "u16" | "u32" | "u64" | "i8" | "i16" | "i32" | "i64" | "f32" | "f64" | "usize" => "number".to_string(),
49            "bool" => "boolean".to_string(),
50            _ if rust_type.starts_with("Vec<") => {
51                let inner = &rust_type[4..rust_type.len() - 1];
52                format!("{}[]", self.map_to_ts(inner))
53            }
54            _ if rust_type.starts_with("Option<") => {
55                let inner = &rust_type[7..rust_type.len() - 1];
56                format!("{} | null", self.map_to_ts(inner))
57            }
58            _ => rust_type.to_string(),
59        }
60    }
61}
62
63impl Default for NargoBridge {
64    fn default() -> Self {
65        Self::new()
66    }
67}
nargo_bridge/lib.rs

nargo_bridge/
lib.rs
