toon/shared/
validation.rs

1use crate::shared::constants::{DEFAULT_DELIMITER, LIST_ITEM_MARKER};
2use crate::shared::literal_utils::{is_boolean_or_null_literal, is_numeric_like};
3
4#[must_use]
5pub fn is_valid_unquoted_key(key: &str) -> bool {
6    let mut chars = key.chars();
7    let Some(first) = chars.next() else {
8        return false;
9    };
10
11    if !(first.is_ascii_alphabetic() || first == '_') {
12        return false;
13    }
14
15    for ch in chars {
16        if ch.is_ascii_alphanumeric() || ch == '_' || ch == '.' {
17            continue;
18        }
19        return false;
20    }
21
22    true
23}
24
25#[must_use]
26pub fn is_identifier_segment(segment: &str) -> bool {
27    let mut chars = segment.chars();
28    let Some(first) = chars.next() else {
29        return false;
30    };
31
32    if !(first.is_ascii_alphabetic() || first == '_') {
33        return false;
34    }
35
36    for ch in chars {
37        if ch.is_ascii_alphanumeric() || ch == '_' {
38            continue;
39        }
40        return false;
41    }
42
43    true
44}
45
46#[must_use]
47pub fn is_safe_unquoted(value: &str, delimiter: char) -> bool {
48    if value.is_empty() {
49        return false;
50    }
51
52    if value.trim() != value {
53        return false;
54    }
55
56    if is_boolean_or_null_literal(value) || is_numeric_like(value) {
57        return false;
58    }
59
60    if value.contains(':') {
61        return false;
62    }
63
64    if value.contains('"') || value.contains('\\') {
65        return false;
66    }
67
68    if value.contains('[') || value.contains(']') || value.contains('{') || value.contains('}') {
69        return false;
70    }
71
72    if value.contains('\n') || value.contains('\r') || value.contains('\t') {
73        return false;
74    }
75
76    if value.contains(delimiter) {
77        return false;
78    }
79
80    if value.starts_with(LIST_ITEM_MARKER) {
81        return false;
82    }
83
84    true
85}
86
87#[must_use]
88pub const fn default_delimiter() -> char {
89    DEFAULT_DELIMITER
90}
toon/shared/validation.rs

toon/shared/
validation.rs
