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
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174

// This file is part of css. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT. No part of predicator, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2017 The developers of css. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/css/master/COPYRIGHT.

use {
    crate::domain::at_rules::counter_style::System,
    cssparser::{
        BasicParseErrorKind,
        CowRcStr,
        ParseError,
        ParseErrorKind,
        SourceLocation,
        Token,
    },
    selectors::parser::{SelectorParseError, SelectorParseErrorKind},
};

/// Represents all the things that can go wrong when parsing.
#[derive(Debug)]
pub enum CustomParseError<'i> {
    // @-rule
    UnsupportedAtRule(CowRcStr<'i>),
    InvalidParseState,

    // @charset
    UnexpectedCharsetAtRule,

    // @counter-style
    UnsupportedCounterStyleProperty(CowRcStr<'i>),
    InvalidCounterStyleWithoutSymbols(System),
    InvalidCounterStyleNotEnoughSymbols(System),
    InvalidCounterStyleWithoutAdditiveSymbols,
    InvalidCounterStyleExtendsWithSymbols,
    InvalidCounterStyleExtendsWithAdditiveSymbols,
    CounterStyleSystemIsNotKnown(CowRcStr<'i>),
    CounterStyleSymbolsCanNotBeEmpty,
    CounterStyleRangesCanNotHaveStartGreaterThanEnd(i32, i32),
    CounterStylePadMinLengthCanNotBeNegative(i32),
    CounterStyleAdditiveTupleWeightCanNotBeNegative(i32),
    CounterStyleAdditiveSymbolsCanNotHaveASecondWeightEqualToOrGreaterThanTheFirst,
    DecimalOrDiscIsNotAllowedInACounterStyleIdentInACounterStyleAtRule,
    NoneIsNotAllowedInACounterStyleIdent,

    // @document
    DocumentAtRuleUrlMatchingFunctionWasInvalid,
    BadUrlInDeclarationValueBlock(CowRcStr<'i>),
    BadStringInDeclarationValueBlock(CowRcStr<'i>),
    UnbalancedCloseParenthesisInDeclarationValueBlock,
    UnbalancedCloseSquareBracketInDeclarationValueBlock,
    UnbalancedCloseCurlyBracketInDeclarationValueBlock,

    // @font-face
    UnsupportedFontFaceProperty(CowRcStr<'i>),

    // @font-feature-values
    InvalidFontLanguageOverrideIdentifier(CowRcStr<'i>),
    InvalidFontLanguageOverrideOpenTypeLanguageTag(CowRcStr<'i>),
    FontFeatureSettingOpenTypeFeatureTagMustBeFourCharacters(CowRcStr<'i>),
    FontFeatureSettingOpenTypeFeatureTagMustBePrintableAscii(CowRcStr<'i>),
    FontFeatureSettingIfNotAnIntegerMustBeOnOrOff(CowRcStr<'i>),
    FontFeatureSettingIntegerMustBePositive(i32),
    FontFaceAtRuleFontWeightWasNotAValidIdentifierOrInteger,
    FontFaceAtRuleFontFamilyCanNotBeGeneric,

    // @import
    AtRuleImportMustBeBeforeAnyRuleExceptAtRuleCharset,

    // @keyframes
    KeyframePercentageWasNotBetweenZeroAndOneInclusive(f32),
    ImportantIsNotAllowedInKeyframePropertyDeclarationValues,
    UnexpectedTokenWhenParsingZoom(Token<'i>),

    // @media
    InvalidMediaType(CowRcStr<'i>),
    DeprecatedMediaType(CowRcStr<'i>),
    UnrecognisedMediaType(CowRcStr<'i>),
    DeprecatedMediaQueryExpression(CowRcStr<'i>),
    UnsupportedMediaQueryExpression(CowRcStr<'i>),
    RatioNumeratorCanNotBeNegativeOrZero(i32),
    RatioDivisorCanNotBeNegativeOrZero(i32),
    MediaGridMustBeEitherZeroOrOne(i32),
    MediaTransform3DMustBeEitherZeroOrOne(i32),
    MediaTypeIsOnlyOptionalIfQualifiedIsNotSpecified,

    // @namespace
    AtRuleNamespaceMustBeBeforeAnyRuleExceptAtRuleCharsetAndAtRuleImport,
    UnexpectedTokenForAtNamespaceRuleNamespaceValue(Token<'i>),

    // @page
    InvalidPageSelectorPseudoClass(CowRcStr<'i>),
    FontRelativeLengthsAreNotAllowedInAPageAtRule,
    ViewportLengthsAreNotAllowedInAPageAtRule,

    // @supports
    InvalidSupportsCondition(CowRcStr<'i>),

    // @viewport
    UnexpectedViewportProperty(CowRcStr<'i>),

    // selectors
    SpecificSelectorParseError(Box<SelectorParseError<'i>>),
    ThereAreNoSelectors,
    SelectorIsInvalidInContext(String),
    UnsupportedPseudoClassOrElement(String),
    NonTreeStructuralPseudoClassScopeIsObsoleteAsOfFirefox55,

    // custom ident
    UnexpectedCustomIdent(CowRcStr<'i>),
    CustomIdentWasExcluded(CowRcStr<'i>),

    // numbers & units
    CouldNotParseCssSignedNumber(
        crate::domain::numbers::CssNumberConversionError,
        f32,
    ),
    CouldNotParseCssUnsignedNumber(
        crate::domain::numbers::CssNumberConversionError,
        f32,
    ),
    CouldNotParseDimensionLessNumber(f32),
    CouldNotParseDimension(f32, CowRcStr<'i>),
    UnsignedIntegersCanNotBeNegative(i32),
    UnsignedIntegersCanNotBeFloats(f32),

    // expressions (calc(), var(), attr())
    UnknownFunctionInValueExpression(CowRcStr<'i>),
    CssVariablesInVarExpressionsMustStartWithTwoDashes(CowRcStr<'i>),

    // required for From<SelectorParseErrorKind>
    SelectorParseErrorKind(SelectorParseErrorKind<'i>),
}

impl<'i> CustomParseError<'i> {
    #[inline(always)]
    pub(crate) fn unexpectedToken<T>(
        unexpectedToken: &Token<'i>,
    ) -> Result<T, ParseError<'i, CustomParseError<'i>>> {
        Err(ParseError {
            kind: ParseErrorKind::Basic(BasicParseErrorKind::UnexpectedToken(
                unexpectedToken.clone(),
            )),
            location: SourceLocation { line: 0, column: 0 },
        })
    }

    #[inline(always)]
    pub(crate) fn dimensionless<T>(
        value: f32,
    ) -> Result<T, ParseError<'i, CustomParseError<'i>>> {
        Err(ParseError {
            kind: ParseErrorKind::Custom(
                CustomParseError::CouldNotParseDimensionLessNumber(value),
            ),
            location: SourceLocation {
                line: value as u32,
                column: 0,
            },
        })
    }
}

impl<'i> From<CustomParseError<'i>> for ParseError<'i, CustomParseError<'i>> {
    fn from(error: CustomParseError) -> ParseError<CustomParseError> {
        ParseError {
            kind: ParseErrorKind::Custom(error),
            location: SourceLocation { line: 0, column: 0 },
        }
    }
}

impl<'i> From<SelectorParseErrorKind<'i>> for CustomParseError<'i> {
    fn from(error: SelectorParseErrorKind) -> CustomParseError {
        CustomParseError::SelectorParseErrorKind(error)
    }
}