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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
use crate::parsing::ParseError;
use std::fmt;
use text_size::{TextRange, TextSize};
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum Location {
Offset(TextSize),
Range(TextRange),
}
impl From<TextSize> for Location {
fn from(text_size: TextSize) -> Self {
Location::Offset(text_size)
}
}
impl From<TextRange> for Location {
fn from(text_range: TextRange) -> Self {
Location::Range(text_range)
}
}
impl Location {
pub fn offset(&self) -> TextSize {
match &self {
Location::Offset(offset) => *offset,
Location::Range(range) => range.start(),
}
}
pub fn end_offset(&self) -> TextSize {
match &self {
Location::Offset(offset) => *offset,
Location::Range(range) => range.end(),
}
}
pub fn add_offset(&self, plus_offset: TextSize, minus_offset: TextSize) -> Location {
match &self {
Location::Range(range) => Location::Range(range + plus_offset - minus_offset),
Location::Offset(offset) => Location::Offset(offset + plus_offset - minus_offset),
}
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub struct SyntaxError {
kind: SyntaxErrorKind,
location: Location,
}
impl SyntaxError {
pub fn new<L: Into<Location>>(kind: SyntaxErrorKind, loc: L) -> SyntaxError {
SyntaxError {
kind,
location: loc.into(),
}
}
pub fn kind(&self) -> SyntaxErrorKind {
self.kind.clone()
}
pub fn location(&self) -> Location {
self.location.clone()
}
}
impl fmt::Display for SyntaxError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.kind.fmt(f)
}
}
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
pub enum SyntaxErrorKind {
ParseError(ParseError),
}
impl fmt::Display for SyntaxErrorKind {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use self::SyntaxErrorKind::*;
match self {
ParseError(msg) => write!(f, "{}", msg.0),
}
}
}