devalang_core/core/lexer/
driver.rs

1use crate::core::lexer::{handler::driver::handle_content_lexing, token::Token};
2use devalang_utils::path::normalize_path;
3use std::fs;
4use std::path::Path;
5
6pub struct Lexer {}
7
8impl Default for Lexer {
9    fn default() -> Self {
10        Self::new()
11    }
12}
13
14impl Lexer {
15    pub fn new() -> Self {
16        Lexer {}
17    }
18
19    pub fn lex_from_source(&self, source: &str) -> Result<Vec<Token>, String> {
20        handle_content_lexing(source.to_string())
21    }
22
23    pub fn lex_tokens(&self, entrypoint: &str) -> Result<Vec<Token>, String> {
24        let path = normalize_path(entrypoint);
25        let resolved_path = Self::resolve_entry_path(&path)?;
26
27        let file_content = fs::read_to_string(&resolved_path).map_err(|e| {
28            format!(
29                "Failed to read the entrypoint file '{}': {}",
30                resolved_path, e
31            )
32        })?;
33
34        handle_content_lexing(file_content).map_err(|e| format!("Failed to lex the content: {}", e))
35    }
36
37    fn resolve_entry_path(path: &str) -> Result<String, String> {
38        let candidate = Path::new(path);
39
40        if candidate.is_dir() {
41            let index_path = candidate.join("index.deva");
42            if index_path.exists() {
43                Ok(index_path.to_string_lossy().replace("\\", "/"))
44            } else {
45                Err(format!(
46                    "Expected 'index.deva' in directory '{}', but it was not found",
47                    path
48                ))
49            }
50        } else if candidate.is_file() {
51            return Ok(path.to_string());
52        } else {
53            return Err(format!(
54                "Provided entrypoint '{}' is not a valid file or directory",
55                path
56            ));
57        }
58    }
59}
devalang_core/core/lexer/driver.rs

devalang_core/core/lexer/
driver.rs
