swc_css_parser/
error.rs

1use std::borrow::Cow;
2
3use swc_atoms::Atom;
4use swc_common::{
5    errors::{DiagnosticBuilder, Handler},
6    Span,
7};
8
9/// Size is same as a size of a pointer.
10#[derive(Debug, Clone, PartialEq, Eq)]
11pub struct Error {
12    inner: Box<(Span, ErrorKind)>,
13}
14
15impl Error {
16    pub fn kind(&self) -> &ErrorKind {
17        &self.inner.1
18    }
19
20    pub fn into_inner(self) -> Box<(Span, ErrorKind)> {
21        self.inner
22    }
23
24    pub fn new(span: Span, kind: ErrorKind) -> Self {
25        Error {
26            inner: Box::new((span, kind)),
27        }
28    }
29
30    pub fn message(&self) -> Cow<'static, str> {
31        match &self.inner.1 {
32            ErrorKind::Eof => "Unexpected end of file".into(),
33
34            // Lexer
35            ErrorKind::InvalidEscape => "An invalid escape".into(),
36            ErrorKind::UnterminatedString => "Unterminated string".into(),
37            ErrorKind::NewlineInString => "Newline in string".into(),
38            ErrorKind::UnterminatedUrl => "Unterminated url".into(),
39            ErrorKind::UnexpectedCharInUrl => "Unexpected character in url".into(),
40
41            // Parser
42            ErrorKind::EofButExpected(s) => {
43                format!("Unexpected end of file, but expected {s}").into()
44            }
45            ErrorKind::Ignore => "Not an error".into(),
46            ErrorKind::UnexpectedChar(c) => format!("Unexpected character `{c:?}`").into(),
47            ErrorKind::Expected(s) => format!("Expected {s}").into(),
48            ErrorKind::Unexpected(s) => format!("Unexpected {s}").into(),
49            ErrorKind::ExpectedButGot(s) => format!("Expected {s}").into(),
50            ErrorKind::ExpectedSelectorText => "Expected a text for selector".into(),
51            ErrorKind::UnterminatedBlockComment => "Unterminated block comment".into(),
52            ErrorKind::InvalidCharsetAtRule => "Invalid @charset at-rule".into(),
53            ErrorKind::InvalidTypeSelector => "Invalid type selector".into(),
54            ErrorKind::InvalidSelector => "Invalid selector".into(),
55            ErrorKind::InvalidAttrSelectorName => "Invalid attribute name".into(),
56            ErrorKind::InvalidAttrSelectorMatcher => "Invalid attribute matcher".into(),
57            ErrorKind::InvalidAttrSelectorMatcherValue => "Invalid attribute matcher value".into(),
58            ErrorKind::InvalidAttrSelectorModifier => "Invalid attribute modifier".into(),
59            ErrorKind::ExpectedNumber => "Expected a number".into(),
60            ErrorKind::InvalidSupportQuery => "Invalid support query".into(),
61            ErrorKind::InvalidMediaQuery => "Invalid media query".into(),
62            ErrorKind::InvalidLayerBlockAtRule => "Invalid @layer block at-rule".into(),
63            ErrorKind::UnknownAtRuleNotTerminated => "Unknown @rule is not terminated".into(),
64            ErrorKind::InvalidDeclarationValue => "Expected a property value".into(),
65            ErrorKind::InvalidAnPlusBMicrosyntax => "Invalid An+B microsyntax".into(),
66            ErrorKind::InvalidCustomIdent(s) => {
67                format!("The CSS-wide keywords are not valid custom ident, found '{s}'").into()
68            }
69            ErrorKind::InvalidKeyframesName(s) => {
70                format!("{s} is not valid name for keyframes").into()
71            }
72            ErrorKind::InvalidScopeAtRule => "Invalid @scope at-rule".into(),
73            ErrorKind::ValueAtRule => "@value at-rule is deprecated".into(),
74        }
75    }
76
77    pub fn to_diagnostics<'a>(&self, handler: &'a Handler) -> DiagnosticBuilder<'a> {
78        handler.struct_span_err(self.inner.0, &self.message())
79    }
80}
81
82#[derive(Debug, Clone, PartialEq, Eq)]
83#[non_exhaustive]
84pub enum ErrorKind {
85    Eof,
86
87    // Lexing errors
88    InvalidEscape,
89    UnterminatedString,
90    NewlineInString,
91    UnterminatedUrl,
92    UnexpectedCharInUrl,
93
94    // Parser errors
95    Ignore,
96    EofButExpected(&'static str),
97    UnexpectedChar(char),
98    Expected(&'static str),
99    Unexpected(&'static str),
100    ExpectedButGot(&'static str),
101    ExpectedSelectorText,
102    UnterminatedBlockComment,
103    InvalidCharsetAtRule,
104    InvalidTypeSelector,
105    InvalidSelector,
106    InvalidDeclarationValue,
107    InvalidAttrSelectorName,
108    InvalidAttrSelectorMatcher,
109    InvalidAttrSelectorMatcherValue,
110    InvalidAttrSelectorModifier,
111    ExpectedNumber,
112    InvalidSupportQuery,
113    InvalidLayerBlockAtRule,
114    InvalidMediaQuery,
115    InvalidAnPlusBMicrosyntax,
116    InvalidCustomIdent(Atom),
117    InvalidKeyframesName(&'static str),
118    InvalidScopeAtRule,
119
120    UnknownAtRuleNotTerminated,
121
122    ValueAtRule,
123}
swc_css_parser/error.rs

swc_css_parser/
error.rs
