blob: 66d132e1f94533ca1b0fa75ebe30a4a8ec87ee78 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
#![feature(box_patterns)]
#![feature(trace_macros)]
#![feature(proc_macro_hygiene)]
mod normalize;
pub use crate::normalize::*;
pub mod imports;
pub mod typecheck;
use dhall_core::*;
use std::fmt;
use std::fs::File;
use std::io::Read;
use std::path::Path;
#[derive(Debug)]
pub enum DhallError {
ParseError(parser::ParseError),
IOError(std::io::Error),
}
impl From<parser::ParseError> for DhallError {
fn from(e: parser::ParseError) -> Self {
DhallError::ParseError(e)
}
}
impl From<std::io::Error> for DhallError {
fn from(e: std::io::Error) -> Self {
DhallError::IOError(e)
}
}
impl fmt::Display for DhallError {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
use self::DhallError::*;
match self {
ParseError(e) => e.fmt(f),
IOError(e) => e.fmt(f),
}
}
}
/// `source_pool` is a Vec of strings to be used to store the contents of imported files.
/// No ideal but necessary for lifetime reasons for now.
pub fn load_dhall_file<'i, 'a: 'i>(
f: &Path,
source_pool: &'a mut Vec<String>,
_resolve_imports: bool,
) -> Result<Expr_<String, X, X>, DhallError> {
source_pool.push(String::new());
let mut buffer = source_pool.last_mut().unwrap();
File::open(f)?.read_to_string(&mut buffer)?;
let expr = parser::parse_expr(&*buffer)?;
let expr = expr.take_ownership_of_labels();
let expr = imports::resolve_imports(&expr);
Ok(expr)
}
|
