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
89
90
|
/*
Copyright 2023-2024 Gabriel Bjørnager Jensen.
This file is part of eAS.
eAS is free software: you can redistribute it
and/or modify it under the terms of the GNU
General Public License as published by the Free
Software Foundation, either version 3 of the
License, or (at your option) any later version.
eAS is distributed in the hope that it will
be useful, but WITHOUT ANY WARRANTY; without
even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU
General Public License along with eAS. If not,
see <https://www.gnu.org/licenses/>.
*/
use crate::error::Error;
use crate::node::Node;
use crate::source_location::SourceLocation;
use crate::token::Token;
macro_rules! complete_node {
($nodes: expr, $new_node: expr, $flag: ident) => {{
$nodes.push($new_node);
$flag = true;
continue;
}};
}
impl Node {
#[must_use]
pub fn parse(tokens: &[(SourceLocation, Token)]) -> Result<Vec<Self>, Error> {
assert!(tokens.len() > 0x0);
let mut file: Option<&str> = None;
let mut nodes: Vec<Self> = Vec::new();
let mut got_end = false;
let mut node_complete = true;
for (location, token) in tokens {
use Token::*;
file = Some(location.file());
match token {
Word(word) => match word.as_str() {
| "CODE16"
| "code16"
| "THUMB"
| "thumb"
=> complete_node!(nodes, Node::Code16, node_complete),
| "ARM"
| "arm"
| "CODE32"
| "code32"
=> complete_node!(nodes, Node::Code32, node_complete),
| "END"
| "end"
=> {
got_end = true;
complete_node!(nodes, Node::End, node_complete);
},
_ => return Err(Error::UnknownMnemonic(word.clone(), location.clone())),
},
Return => {
if !node_complete { return Err(Error::IncompleteNode(location.clone())) };
continue;
},
_ => {},
};
}
if !got_end { return Err(Error::EndOfFile(file.unwrap().to_string())) };
return Ok(nodes);
}
}
|
