devalang_core/core/lexer/
mod.rs

1pub mod handler;
2pub mod token;
3
4use crate::core::{
5    lexer::{handler::driver::handle_content_lexing, token::Token},
6    utils::path::normalize_path,
7};
8use std::fs;
9use std::path::Path;
10
11pub struct Lexer {}
12
13impl Default for Lexer {
14    fn default() -> Self {
15        Self::new()
16    }
17}
18
19impl Lexer {
20    pub fn new() -> Self {
21        Lexer {}
22    }
23
24    pub fn lex_from_source(&self, source: &str) -> Result<Vec<Token>, String> {
25        handle_content_lexing(source.to_string())
26    }
27
28    pub fn lex_tokens(&self, entrypoint: &str) -> Result<Vec<Token>, String> {
29        let path = normalize_path(entrypoint);
30        let resolved_path = Self::resolve_entry_path(&path)?;
31
32        let file_content = fs::read_to_string(&resolved_path).map_err(|e| {
33            format!(
34                "Failed to read the entrypoint file '{}': {}",
35                resolved_path, e
36            )
37        })?;
38
39        handle_content_lexing(file_content).map_err(|e| format!("Failed to lex the content: {}", e))
40    }
41
42    fn resolve_entry_path(path: &str) -> Result<String, String> {
43        let candidate = Path::new(path);
44
45        if candidate.is_dir() {
46            let index_path = candidate.join("index.deva");
47            if index_path.exists() {
48                Ok(index_path.to_string_lossy().replace("\\", "/"))
49            } else {
50                Err(format!(
51                    "Expected 'index.deva' in directory '{}', but it was not found",
52                    path
53                ))
54            }
55        } else if candidate.is_file() {
56            return Ok(path.to_string());
57        } else {
58            return Err(format!(
59                "Provided entrypoint '{}' is not a valid file or directory",
60                path
61            ));
62        }
63    }
64}
devalang_core/core/lexer/mod.rs

devalang_core/core/lexer/
mod.rs
