css-tree - npm Package Compare versions

Comparing version 1.0.0-alpha.33 to 1.0.0-alpha.34

CHANGELOG.md

@@ -1,7 +0,20 @@
-## 1.0.0-alpha.33 (July 12, 2019)
+## 1.0.0-alpha.34 (July 27, 2019)
 
+- Tokenizer
+    - Added `isBOM()` function
+    - Added `charCodeCategory()` function
+    - Removed `firstCharOffset()` function (use `isBOM()` instead)
+    - Removed `CHARCODE` dictionary
+    - Removed `INPUT_STREAM_CODE*` dictionaries
 - Lexer
+    - Allowed comments in matching value (just ignore them like whitespaces)
+    - Increased iteration count in value matching from 10k up to 15k
+    - Fixed missed `debugger` (#104)
+
+## 1.0.0-alpha.33 (July 11, 2019)
+
+- Lexer
     - Fixed low priority productions matching by changing an approach for robust one (#103)
 
-## 1.0.0-alpha.32 (July 12, 2019)
+## 1.0.0-alpha.32 (July 11, 2019)
 
@@ -8,0 +21,0 @@ - Lexer

data/patch.json

@@ -542,7 +542,7 @@ {
       "comment": "https://developer.mozilla.org/en-US/docs/Web/CSS/-ms-filter",
-      "syntax": "'progid:' [ <ident-token> '.' ]* [ <ident-token> | <function-token> <any-value>? ')' ]"
+      "syntax": "'progid:' [ <ident-token> '.' ]* [ <ident-token> | <function-token> <any-value>? ) ]"
     },
     "-ms-filter-function-legacy": {
       "comment": "https://developer.mozilla.org/en-US/docs/Web/CSS/-ms-filter",
-      "syntax": "<ident-token> | <function-token> <any-value>? ')'"
+      "syntax": "<ident-token> | <function-token> <any-value>? )"
     },
@@ -549,0 +549,0 @@ "-ms-filter": {

dist/default-syntax.json

@@ -1,1 +0,1 @@
-{"generic":true,"types":{"absolute-size":"xx-small | x-small | small | medium | large | x-large | xx-large","alpha-value":"<number> | <percentage>","angle-percentage":"<angle> | <percentage>","angular-color-hint":"<angle-percentage>","angular-color-stop":"<color> && <color-stop-angle>?","angular-color-stop-list":"[ <angular-color-stop> [, <angular-color-hint> ]? ]# , <angular-color-stop>","animateable-feature":"scroll-position | contents | <custom-ident>","attachment":"scroll | fixed | local","attr()":"attr( <attr-name> <type-or-unit>? [, <attr-fallback> ]? )","attr-matcher":"[ '~' | '|' | '^' | '$' | '*' ]? '='","attr-modifier":"i | s","attribute-selector":"'[' <wq-name> ']' | '[' <wq-name> <attr-matcher> [ <string-token> | <ident-token> ] <attr-modifier>? ']'","auto-repeat":"repeat( [ auto-fill | auto-fit ] , [ <line-names>? <fixed-size> ]+ <line-names>? )","auto-track-list":"[ <line-names>? [ <fixed-size> | <fixed-repeat> ] ]* <line-names>? <auto-repeat> [ <line-names>? [ <fixed-size> | <fixed-repeat> ] ]* <line-names>?","baseline-position":"[ first | last ]? baseline","basic-shape":"<inset()> | <circle()> | <ellipse()> | <polygon()>","bg-image":"none | <image>","bg-layer":"<bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box> || <box>","bg-position":"[ [ left | center | right | top | bottom | <length-percentage> ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ] | [ center | [ left | right ] <length-percentage>? ] && [ center | [ top | bottom ] <length-percentage>? ] ]","bg-size":"[ <length-percentage> | auto ]{1,2} | cover | contain","blur()":"blur( <length> )","blend-mode":"normal | multiply | screen | overlay | darken | lighten | color-dodge | color-burn | hard-light | soft-light | difference | exclusion | hue | saturation | color | luminosity","box":"border-box | padding-box | content-box","brightness()":"brightness( <number-percentage> )","calc()":"calc( <calc-sum> )","calc-sum":"<calc-product> [ [ '+' | '-' ] <calc-product> ]*","calc-product":"<calc-value> [ '*' <calc-value> | '/' <number> ]*","calc-value":"<number> | <dimension> | <percentage> | ( <calc-sum> )","cf-final-image":"<image> | <color>","cf-mixing-image":"<percentage>? && <image>","circle()":"circle( [ <shape-radius> ]? [ at <position> ]? )","clamp()":"clamp( <calc-sum>#{3} )","class-selector":"'.' <ident-token>","clip-source":"<url>","color":"<rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>","color-stop":"<color-stop-length> | <color-stop-angle>","color-stop-angle":"<angle-percentage>{1,2}","color-stop-length":"<length-percentage>{1,2}","color-stop-list":"[ <linear-color-stop> [, <linear-color-hint> ]? ]# , <linear-color-stop>","combinator":"'>' | '+' | '~' | [ '||' ]","common-lig-values":"[ common-ligatures | no-common-ligatures ]","compat":"searchfield | textarea | push-button | button-bevel | slider-horizontal | checkbox | radio | square-button | menulist | menulist-button | listbox | meter | progress-bar","composite-style":"clear | copy | source-over | source-in | source-out | source-atop | destination-over | destination-in | destination-out | destination-atop | xor","compositing-operator":"add | subtract | intersect | exclude","compound-selector":"[ <type-selector>? <subclass-selector>* [ <pseudo-element-selector> <pseudo-class-selector>* ]* ]!","compound-selector-list":"<compound-selector>#","complex-selector":"<compound-selector> [ <combinator>? <compound-selector> ]*","complex-selector-list":"<complex-selector>#","conic-gradient()":"conic-gradient( [ from <angle> ]? [ at <position> ]? , <angular-color-stop-list> )","contextual-alt-values":"[ contextual | no-contextual ]","content-distribution":"space-between | space-around | space-evenly | stretch","content-list":"[ <string> | contents | <url> | <quote> | <attr()> | counter( <ident> , <'list-style-type'>? ) ]+","content-position":"center | start | end | flex-start | flex-end","content-replacement":"<image>","contrast()":"contrast( [ <number-percentage> ] )","counter()":"counter( <custom-ident> , [ <counter-style> | none ]? )","counter-style":"<counter-style-name> | symbols( )","counter-style-name":"<custom-ident>","counters()":"counters( <custom-ident> , <string> , [ <counter-style> | none ]? )","cross-fade()":"cross-fade( <cf-mixing-image> , <cf-final-image>? )","cubic-bezier-timing-function":"ease | ease-in | ease-out | ease-in-out | cubic-bezier( <number> , <number> , <number> , <number> )","deprecated-system-color":"ActiveBorder | ActiveCaption | AppWorkspace | Background | ButtonFace | ButtonHighlight | ButtonShadow | ButtonText | CaptionText | GrayText | Highlight | HighlightText | InactiveBorder | InactiveCaption | InactiveCaptionText | InfoBackground | InfoText | Menu | MenuText | Scrollbar | ThreeDDarkShadow | ThreeDFace | ThreeDHighlight | ThreeDLightShadow | ThreeDShadow | Window | WindowFrame | WindowText","discretionary-lig-values":"[ discretionary-ligatures | no-discretionary-ligatures ]","display-box":"contents | none","display-inside":"flow | flow-root | table | flex | grid | ruby","display-internal":"table-row-group | table-header-group | table-footer-group | table-row | table-cell | table-column-group | table-column | table-caption | ruby-base | ruby-text | ruby-base-container | ruby-text-container","display-legacy":"inline-block | inline-list-item | inline-table | inline-flex | inline-grid","display-listitem":"<display-outside>? && [ flow | flow-root ]? && list-item","display-outside":"block | inline | run-in","drop-shadow()":"drop-shadow( <length>{2,3} <color>? )","east-asian-variant-values":"[ jis78 | jis83 | jis90 | jis04 | simplified | traditional ]","east-asian-width-values":"[ full-width | proportional-width ]","element()":"element( <id-selector> )","ellipse()":"ellipse( [ <shape-radius>{2} ]? [ at <position> ]? )","ending-shape":"circle | ellipse","env()":"env( <custom-ident> , <declaration-value>? )","explicit-track-list":"[ <line-names>? <track-size> ]+ <line-names>?","family-name":"<string> | <custom-ident>+","feature-tag-value":"<string> [ <integer> | on | off ]?","feature-type":"@stylistic | @historical-forms | @styleset | @character-variant | @swash | @ornaments | @annotation","feature-value-block":"<feature-type> '{' <feature-value-declaration-list> '}'","feature-value-block-list":"<feature-value-block>+","feature-value-declaration":"<custom-ident> : <integer>+ ;","feature-value-declaration-list":"<feature-value-declaration>","feature-value-name":"<custom-ident>","fill-rule":"nonzero | evenodd","filter-function":"<blur()> | <brightness()> | <contrast()> | <drop-shadow()> | <grayscale()> | <hue-rotate()> | <invert()> | <opacity()> | <saturate()> | <sepia()>","filter-function-list":"[ <filter-function> | <url> ]+","final-bg-layer":"<'background-color'> || <bg-image> || <bg-position> [ / <bg-size> ]? || <repeat-style> || <attachment> || <box> || <box>","fit-content()":"fit-content( [ <length> | <percentage> ] )","fixed-breadth":"<length-percentage>","fixed-repeat":"repeat( [ <positive-integer> ] , [ <line-names>? <fixed-size> ]+ <line-names>? )","fixed-size":"<fixed-breadth> | minmax( <fixed-breadth> , <track-breadth> ) | minmax( <inflexible-breadth> , <fixed-breadth> )","font-stretch-absolute":"normal | ultra-condensed | extra-condensed | condensed | semi-condensed | semi-expanded | expanded | extra-expanded | ultra-expanded | <percentage>","font-variant-css21":"[ normal | small-caps ]","font-weight-absolute":"normal | bold | <number>","frequency-percentage":"<frequency> | <percentage>","general-enclosed":"[ <function-token> <any-value> ) ] | ( <ident> <any-value> )","generic-family":"serif | sans-serif | cursive | fantasy | monospace | -apple-system","generic-name":"serif | sans-serif | cursive | fantasy | monospace","geometry-box":"<shape-box> | fill-box | stroke-box | view-box","gradient":"<linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()> | <-legacy-gradient>","grayscale()":"grayscale( <number-percentage> )","grid-line":"auto | <custom-ident> | [ <integer> && <custom-ident>? ] | [ span && [ <integer> || <custom-ident> ] ]","historical-lig-values":"[ historical-ligatures | no-historical-ligatures ]","hsl()":"hsl( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsl( <hue> , <percentage> , <percentage> , <alpha-value>? )","hsla()":"hsla( <hue> <percentage> <percentage> [ / <alpha-value> ]? ) | hsla( <hue> , <percentage> , <percentage> , <alpha-value>? )","hue":"<number> | <angle>","hue-rotate()":"hue-rotate( <angle> )","image":"<url> | <image()> | <image-set()> | <element()> | <cross-fade()> | <gradient>","image()":"image( <image-tags>? [ <image-src>? , <color>? ]! )","image-set()":"image-set( <image-set-option># )","image-set-option":"[ <image> | <string> ] <resolution>","image-src":"<url> | <string>","image-tags":"ltr | rtl","inflexible-breadth":"<length> | <percentage> | min-content | max-content | auto","inset()":"inset( <length-percentage>{1,4} [ round <'border-radius'> ]? )","invert()":"invert( <number-percentage> )","keyframes-name":"<custom-ident> | <string>","keyframe-block":"<keyframe-selector># { <declaration-list> }","keyframe-block-list":"<keyframe-block>+","keyframe-selector":"from | to | <percentage>","leader()":"leader( <leader-type> )","leader-type":"dotted | solid | space | <string>","length-percentage":"<length> | <percentage>","line-names":"'[' <custom-ident>* ']'","line-name-list":"[ <line-names> | <name-repeat> ]+","line-style":"none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset","line-width":"<length> | thin | medium | thick","linear-color-hint":"<length-percentage>","linear-color-stop":"<color> <color-stop-length>?","linear-gradient()":"linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )","mask-layer":"<mask-reference> || <position> [ / <bg-size> ]? || <repeat-style> || <geometry-box> || [ <geometry-box> | no-clip ] || <compositing-operator> || <masking-mode>","mask-position":"[ <length-percentage> | left | center | right ] [ <length-percentage> | top | center | bottom ]?","mask-reference":"none | <image> | <mask-source>","mask-source":"<url>","masking-mode":"alpha | luminance | match-source","matrix()":"matrix( <number>#{6} )","matrix3d()":"matrix3d( <number>#{16} )","max()":"max( <calc-sum># )","media-and":"<media-in-parens> [ and <media-in-parens> ]+","media-condition":"<media-not> | <media-and> | <media-or> | <media-in-parens>","media-condition-without-or":"<media-not> | <media-and> | <media-in-parens>","media-feature":"( [ <mf-plain> | <mf-boolean> | <mf-range> ] )","media-in-parens":"( <media-condition> ) | <media-feature> | <general-enclosed>","media-not":"not <media-in-parens>","media-or":"<media-in-parens> [ or <media-in-parens> ]+","media-query":"<media-condition> | [ not | only ]? <media-type> [ and <media-condition-without-or> ]?","media-query-list":"<media-query>#","media-type":"<ident>","mf-boolean":"<mf-name>","mf-name":"<ident>","mf-plain":"<mf-name> : <mf-value>","mf-range":"<mf-name> [ '<' | '>' ]? '='? <mf-value> | <mf-value> [ '<' | '>' ]? '='? <mf-name> | <mf-value> '<' '='? <mf-name> '<' '='? <mf-value> | <mf-value> '>' '='? <mf-name> '>' '='? <mf-value>","mf-value":"<number> | <dimension> | <ident> | <ratio>","min()":"min( <calc-sum># )","minmax()":"minmax( [ <length> | <percentage> | <flex> | min-content | max-content | auto ] , [ <length> | <percentage> | <flex> | min-content | max-content | auto ] )","named-color":"transparent | aliceblue | antiquewhite | aqua | aquamarine | azure | beige | bisque | black | blanchedalmond | blue | blueviolet | brown | burlywood | cadetblue | chartreuse | chocolate | coral | cornflowerblue | cornsilk | crimson | cyan | darkblue | darkcyan | darkgoldenrod | darkgray | darkgreen | darkgrey | darkkhaki | darkmagenta | darkolivegreen | darkorange | darkorchid | darkred | darksalmon | darkseagreen | darkslateblue | darkslategray | darkslategrey | darkturquoise | darkviolet | deeppink | deepskyblue | dimgray | dimgrey | dodgerblue | firebrick | floralwhite | forestgreen | fuchsia | gainsboro | ghostwhite | gold | goldenrod | gray | green | greenyellow | grey | honeydew | hotpink | indianred | indigo | ivory | khaki | lavender | lavenderblush | lawngreen | lemonchiffon | lightblue | lightcoral | lightcyan | lightgoldenrodyellow | lightgray | lightgreen | lightgrey | lightpink | lightsalmon | lightseagreen | lightskyblue | lightslategray | lightslategrey | lightsteelblue | lightyellow | lime | limegreen | linen | magenta | maroon | mediumaquamarine | mediumblue | mediumorchid | mediumpurple | mediumseagreen | mediumslateblue | mediumspringgreen | mediumturquoise | mediumvioletred | midnightblue | mintcream | mistyrose | moccasin | navajowhite | navy | oldlace | olive | olivedrab | orange | orangered | orchid | palegoldenrod | palegreen | paleturquoise | palevioletred | papayawhip | peachpuff | peru | pink | plum | powderblue | purple | rebeccapurple | red | rosybrown | royalblue | saddlebrown | salmon | sandybrown | seagreen | seashell | sienna | silver | skyblue | slateblue | slategray | slategrey | snow | springgreen | steelblue | tan | teal | thistle | tomato | turquoise | violet | wheat | white | whitesmoke | yellow | yellowgreen | <-non-standard-color>","namespace-prefix":"<ident>","ns-prefix":"[ <ident-token> | '*' ]? '|'","number-percentage":"<number> | <percentage>","numeric-figure-values":"[ lining-nums | oldstyle-nums ]","numeric-fraction-values":"[ diagonal-fractions | stacked-fractions ]","numeric-spacing-values":"[ proportional-nums | tabular-nums ]","nth":"<an-plus-b> | even | odd","opacity()":"opacity( [ <number-percentage> ] )","overflow-position":"unsafe | safe","outline-radius":"<length> | <percentage>","page-body":"<declaration>? [ ; <page-body> ]? | <page-margin-box> <page-body>","page-margin-box":"<page-margin-box-type> '{' <declaration-list> '}'","page-margin-box-type":"@top-left-corner | @top-left | @top-center | @top-right | @top-right-corner | @bottom-left-corner | @bottom-left | @bottom-center | @bottom-right | @bottom-right-corner | @left-top | @left-middle | @left-bottom | @right-top | @right-middle | @right-bottom","page-selector-list":"[ <page-selector># ]?","page-selector":"<pseudo-page>+ | <ident> <pseudo-page>*","perspective()":"perspective( <length> )","polygon()":"polygon( <fill-rule>? , [ <length-percentage> <length-percentage> ]# )","position":"[ [ left | center | right ] || [ top | center | bottom ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ]? | [ [ left | right ] <length-percentage> ] && [ [ top | bottom ] <length-percentage> ] ]","pseudo-class-selector":"':' <ident-token> | ':' <function-token> <any-value> ')'","pseudo-element-selector":"':' <pseudo-class-selector>","pseudo-page":": [ left | right | first | blank ]","quote":"open-quote | close-quote | no-open-quote | no-close-quote","radial-gradient()":"radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )","relative-selector":"<combinator>? <complex-selector>","relative-selector-list":"<relative-selector>#","relative-size":"larger | smaller","repeat-style":"repeat-x | repeat-y | [ repeat | space | round | no-repeat ]{1,2}","repeating-linear-gradient()":"repeating-linear-gradient( [ <angle> | to <side-or-corner> ]? , <color-stop-list> )","repeating-radial-gradient()":"repeating-radial-gradient( [ <ending-shape> || <size> ]? [ at <position> ]? , <color-stop-list> )","rgb()":"rgb( <percentage>{3} [ / <alpha-value> ]? ) | rgb( <number>{3} [ / <alpha-value> ]? ) | rgb( <percentage>#{3} , <alpha-value>? ) | rgb( <number>#{3} , <alpha-value>? )","rgba()":"rgba( <percentage>{3} [ / <alpha-value> ]? ) | rgba( <number>{3} [ / <alpha-value> ]? ) | rgba( <percentage>#{3} , <alpha-value>? ) | rgba( <number>#{3} , <alpha-value>? )","rotate()":"rotate( [ <angle> | <zero> ] )","rotate3d()":"rotate3d( <number> , <number> , <number> , [ <angle> | <zero> ] )","rotateX()":"rotateX( [ <angle> | <zero> ] )","rotateY()":"rotateY( [ <angle> | <zero> ] )","rotateZ()":"rotateZ( [ <angle> | <zero> ] )","saturate()":"saturate( <number-percentage> )","scale()":"scale( <number> , <number>? )","scale3d()":"scale3d( <number> , <number> , <number> )","scaleX()":"scaleX( <number> )","scaleY()":"scaleY( <number> )","scaleZ()":"scaleZ( <number> )","self-position":"center | start | end | self-start | self-end | flex-start | flex-end","shape-radius":"<length-percentage> | closest-side | farthest-side","skew()":"skew( [ <angle> | <zero> ] , [ <angle> | <zero> ]? )","skewX()":"skewX( [ <angle> | <zero> ] )","skewY()":"skewY( [ <angle> | <zero> ] )","sepia()":"sepia( <number-percentage> )","shadow":"inset? && <length>{2,4} && <color>?","shadow-t":"[ <length>{2,3} && <color>? ]","shape":"rect( <top> , <right> , <bottom> , <left> ) | rect( <top> <right> <bottom> <left> )","shape-box":"<box> | margin-box","side-or-corner":"[ left | right ] || [ top | bottom ]","single-animation":"<time> || <timing-function> || <time> || <single-animation-iteration-count> || <single-animation-direction> || <single-animation-fill-mode> || <single-animation-play-state> || [ none | <keyframes-name> ]","single-animation-direction":"normal | reverse | alternate | alternate-reverse","single-animation-fill-mode":"none | forwards | backwards | both","single-animation-iteration-count":"infinite | <number>","single-animation-play-state":"running | paused","single-transition":"[ none | <single-transition-property> ] || <time> || <timing-function> || <time>","single-transition-property":"all | <custom-ident>","size":"closest-side | farthest-side | closest-corner | farthest-corner | <length> | <length-percentage>{2}","step-position":"jump-start | jump-end | jump-none | jump-both | start | end","step-timing-function":"step-start | step-end | steps( <integer> [, <step-position> ]? )","subclass-selector":"<id-selector> | <class-selector> | <attribute-selector> | <pseudo-class-selector>","supports-condition":"not <supports-in-parens> | <supports-in-parens> [ and <supports-in-parens> ]* | <supports-in-parens> [ or <supports-in-parens> ]*","supports-in-parens":"( <supports-condition> ) | <supports-feature> | <general-enclosed>","supports-feature":"<supports-decl> | <supports-selector-fn>","supports-decl":"( <declaration> )","supports-selector-fn":"selector( <complex-selector> )","symbol":"<string> | <image> | <custom-ident>","target":"<target-counter()> | <target-counters()> | <target-text()>","target-counter()":"target-counter( [ <string> | <url> ] , <custom-ident> , <counter-style>? )","target-counters()":"target-counters( [ <string> | <url> ] , <custom-ident> , <string> , <counter-style>? )","target-text()":"target-text( [ <string> | <url> ] , [ content | before | after | first-letter ]? )","time-percentage":"<time> | <percentage>","timing-function":"linear | <cubic-bezier-timing-function> | <step-timing-function>","track-breadth":"<length-percentage> | <flex> | min-content | max-content | auto","track-list":"[ <line-names>? 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slashed-zero ]","font-variant-position":"normal | sub | super","font-weight":"<font-weight-absolute> | bolder | lighter","gap":"<'row-gap'> <'column-gap'>?","grid":"<'grid-template'> | <'grid-template-rows'> / [ auto-flow && dense? ] <'grid-auto-columns'>? | [ auto-flow && dense? ] <'grid-auto-rows'>? / <'grid-template-columns'>","grid-area":"<grid-line> [ / <grid-line> ]{0,3}","grid-auto-columns":"<track-size>+","grid-auto-flow":"[ row | column ] || dense","grid-auto-rows":"<track-size>+","grid-column":"<grid-line> [ / <grid-line> ]?","grid-column-end":"<grid-line>","grid-column-gap":"<length-percentage>","grid-column-start":"<grid-line>","grid-gap":"<'grid-row-gap'> <'grid-column-gap'>?","grid-row":"<grid-line> [ / <grid-line> ]?","grid-row-end":"<grid-line>","grid-row-gap":"<length-percentage>","grid-row-start":"<grid-line>","grid-template":"none | [ <'grid-template-rows'> / <'grid-template-columns'> ] | [ <line-names>? <string> <track-size>? <line-names>? ]+ [ / <explicit-track-list> ]?","grid-template-areas":"none | <string>+","grid-template-columns":"none | <track-list> | <auto-track-list>","grid-template-rows":"none | <track-list> | <auto-track-list>","hanging-punctuation":"none | [ first || [ force-end | allow-end ] || last ]","height":"[ <length> | <percentage> ] && [ border-box | content-box ]? | available | min-content | max-content | fit-content | auto","hyphens":"none | manual | auto","image-orientation":"from-image | <angle> | [ <angle>? flip ]","image-rendering":"auto | crisp-edges | pixelated | optimizeSpeed | optimizeQuality | <-non-standard-image-rendering>","image-resolution":"[ from-image || <resolution> ] && snap?","ime-mode":"auto | normal | active | inactive | disabled","initial-letter":"normal | [ <number> <integer>? ]","initial-letter-align":"[ auto | alphabetic | hanging | ideographic ]","inline-size":"<'width'>","inset":"<'top'>{1,4}","inset-block":"<'top'>{1,2}","inset-block-end":"<'top'>","inset-block-start":"<'top'>","inset-inline":"<'top'>{1,2}","inset-inline-end":"<'top'>","inset-inline-start":"<'top'>","isolation":"auto | isolate","justify-content":"normal | <content-distribution> | <overflow-position>? [ <content-position> | left | right ]","justify-items":"normal | stretch | <baseline-position> | <overflow-position>? [ <self-position> | left | right ] | legacy | legacy && [ left | right | center ]","justify-self":"auto | normal | stretch | <baseline-position> | <overflow-position>? [ <self-position> | left | right ]","left":"<length> | <percentage> | auto","letter-spacing":"normal | <length-percentage>","line-break":"auto | loose | normal | strict","line-clamp":"none | <integer>","line-height":"normal | <number> | <length> | <percentage>","line-height-step":"<length>","list-style":"<'list-style-type'> || <'list-style-position'> || <'list-style-image'>","list-style-image":"<url> | none","list-style-position":"inside | outside","list-style-type":"<counter-style> | <string> | none","margin":"[ <length> | <percentage> | auto ]{1,4}","margin-block":"<'margin-left'>{1,2}","margin-block-end":"<'margin-left'>","margin-block-start":"<'margin-left'>","margin-bottom":"<length> | <percentage> | auto","margin-inline":"<'margin-left'>{1,2}","margin-inline-end":"<'margin-left'>","margin-inline-start":"<'margin-left'>","margin-left":"<length> | <percentage> | auto","margin-right":"<length> | <percentage> | auto","margin-top":"<length> | <percentage> | auto","mask":"<mask-layer>#","mask-border":"<'mask-border-source'> || <'mask-border-slice'> [ / <'mask-border-width'>? [ / <'mask-border-outset'> ]? ]? || <'mask-border-repeat'> || <'mask-border-mode'>","mask-border-mode":"luminance | alpha","mask-border-outset":"[ <length> | <number> ]{1,4}","mask-border-repeat":"[ stretch | repeat | round | space ]{1,2}","mask-border-slice":"<number-percentage>{1,4} fill?","mask-border-source":"none | <image>","mask-border-width":"[ <length-percentage> | <number> | auto ]{1,4}","mask-clip":"[ <geometry-box> | no-clip ]#","mask-composite":"<compositing-operator>#","mask-image":"<mask-reference>#","mask-mode":"<masking-mode>#","mask-origin":"<geometry-box>#","mask-position":"<position>#","mask-repeat":"<repeat-style>#","mask-size":"<bg-size>#","mask-type":"luminance | alpha","max-block-size":"<'max-width'>","max-height":"<length> | <percentage> | none | max-content | min-content | fit-content | fill-available","max-inline-size":"<'max-width'>","max-lines":"none | <integer>","max-width":"<length> | <percentage> | none | max-content | min-content | fit-content | fill-available | <-non-standard-width>","min-block-size":"<'min-width'>","min-height":"<length> | <percentage> | auto | max-content | min-content | fit-content | fill-available","min-inline-size":"<'min-width'>","min-width":"<length> | <percentage> | auto | max-content | min-content | fit-content | fill-available | <-non-standard-width>","mix-blend-mode":"<blend-mode>","object-fit":"fill | contain | cover | none | scale-down","object-position":"<position>","offset":"[ <'offset-position'>? [ <'offset-path'> [ <'offset-distance'> || <'offset-rotate'> ]? ]? ]! [ / <'offset-anchor'> ]?","offset-anchor":"auto | <position>","offset-distance":"<length-percentage>","offset-path":"none | ray( [ <angle> && <size>? && contain? ] ) | <path()> | <url> | [ <basic-shape> || <geometry-box> ]","offset-position":"auto | <position>","offset-rotate":"[ auto | reverse ] || <angle>","opacity":"<number-zero-one>","order":"<integer>","orphans":"<integer>","outline":"[ <'outline-color'> || <'outline-style'> || <'outline-width'> ]","outline-color":"<color> | invert","outline-offset":"<length>","outline-style":"auto | <'border-style'>","outline-width":"<line-width>","overflow":"[ visible | hidden | clip | scroll | auto ]{1,2} | <-non-standard-overflow>","overflow-anchor":"auto | none","overflow-block":"visible | hidden | clip | scroll | auto","overflow-clip-box":"padding-box | content-box","overflow-inline":"visible | hidden | clip | scroll | auto","overflow-wrap":"normal | break-word | anywhere","overflow-x":"visible | hidden | clip | scroll | auto","overflow-y":"visible | hidden | clip | scroll | auto","overscroll-behavior":"[ contain | none | auto ]{1,2}","overscroll-behavior-x":"contain | none | auto","overscroll-behavior-y":"contain | none | auto","padding":"[ <length> | <percentage> ]{1,4}","padding-block":"<'padding-left'>{1,2}","padding-block-end":"<'padding-left'>","padding-block-start":"<'padding-left'>","padding-bottom":"<length> | <percentage>","padding-inline":"<'padding-left'>{1,2}","padding-inline-end":"<'padding-left'>","padding-inline-start":"<'padding-left'>","padding-left":"<length> | <percentage>","padding-right":"<length> | <percentage>","padding-top":"<length> | <percentage>","page-break-after":"auto | always | avoid | left | right | recto | verso","page-break-before":"auto | always | avoid | left | right | recto | verso","page-break-inside":"auto | avoid","paint-order":"normal | [ fill || stroke || markers ]","perspective":"none | <length>","perspective-origin":"<position>","place-content":"<'align-content'> <'justify-content'>?","place-items":"<'align-items'> <'justify-items'>?","place-self":"<'align-self'> <'justify-self'>?","pointer-events":"auto | none | visiblePainted | visibleFill | visibleStroke | visible | painted | fill | stroke | all | inherit","position":"static | relative | absolute | sticky | fixed | -webkit-sticky","quotes":"none | [ <string> <string> ]+","resize":"none | both | horizontal | vertical | block | inline","right":"<length> | <percentage> | auto","rotate":"none | <angle> | [ x | y | z | <number>{3} ] && <angle>","row-gap":"normal | <length-percentage>","ruby-align":"start | center | space-between | space-around","ruby-merge":"separate | collapse | auto","ruby-position":"over | under | inter-character","scale":"none | <number>{1,3}","scrollbar-color":"auto | dark | light | <color>{2}","scrollbar-width":"auto | thin | none","scroll-behavior":"auto | smooth","scroll-margin":"<length>{1,4}","scroll-margin-block":"<length>{1,2}","scroll-margin-block-start":"<length>","scroll-margin-block-end":"<length>","scroll-margin-bottom":"<length>","scroll-margin-inline":"<length>{1,2}","scroll-margin-inline-start":"<length>","scroll-margin-inline-end":"<length>","scroll-margin-left":"<length>","scroll-margin-right":"<length>","scroll-margin-top":"<length>","scroll-padding":"[ auto | <length-percentage> ]{1,4}","scroll-padding-block":"[ auto | <length-percentage> ]{1,2}","scroll-padding-block-start":"auto | <length-percentage>","scroll-padding-block-end":"auto | <length-percentage>","scroll-padding-bottom":"auto | <length-percentage>","scroll-padding-inline":"[ auto | <length-percentage> ]{1,2}","scroll-padding-inline-start":"auto | <length-percentage>","scroll-padding-inline-end":"auto | <length-percentage>","scroll-padding-left":"auto | <length-percentage>","scroll-padding-right":"auto | <length-percentage>","scroll-padding-top":"auto | <length-percentage>","scroll-snap-align":"[ none | start | end | center ]{1,2}","scroll-snap-coordinate":"none | <position>#","scroll-snap-destination":"<position>","scroll-snap-points-x":"none | repeat( <length-percentage> )","scroll-snap-points-y":"none | repeat( <length-percentage> )","scroll-snap-stop":"normal | always","scroll-snap-type":"none | [ x | y | block | inline | both ] [ mandatory | proximity ]?","scroll-snap-type-x":"none | mandatory | proximity","scroll-snap-type-y":"none | mandatory | proximity","shape-image-threshold":"<number>","shape-margin":"<length-percentage>","shape-outside":"none | <shape-box> || <basic-shape> | <image>","tab-size":"<integer> | <length>","table-layout":"auto | fixed","text-align":"start | end | left | right | center | justify | match-parent","text-align-last":"auto | start | end | left | right | center | justify","text-combine-upright":"none | all | [ digits <integer>? ]","text-decoration":"<'text-decoration-line'> || <'text-decoration-style'> || <'text-decoration-color'>","text-decoration-color":"<color>","text-decoration-line":"none | [ underline || overline || line-through || blink ]","text-decoration-skip":"none | [ objects || [ spaces | [ leading-spaces || trailing-spaces ] ] || edges || box-decoration ]","text-decoration-skip-ink":"auto | none","text-decoration-style":"solid | double | dotted | dashed | wavy","text-emphasis":"<'text-emphasis-style'> || <'text-emphasis-color'>","text-emphasis-color":"<color>","text-emphasis-position":"[ over | under ] && [ right | left ]","text-emphasis-style":"none | [ [ filled | open ] || [ dot | circle | double-circle | triangle | sesame ] ] | <string>","text-indent":"<length-percentage> && hanging? && each-line?","text-justify":"auto | inter-character | inter-word | none","text-orientation":"mixed | upright | sideways","text-overflow":"[ clip | ellipsis | <string> ]{1,2}","text-rendering":"auto | optimizeSpeed | optimizeLegibility | geometricPrecision","text-shadow":"none | <shadow-t>#","text-size-adjust":"none | auto | <percentage>","text-transform":"none | capitalize | uppercase | lowercase | full-width | full-size-kana","text-underline-position":"auto | [ under || [ left | right ] ]","top":"<length> | <percentage> | auto","touch-action":"auto | none | [ [ pan-x | pan-left | pan-right ] || [ pan-y | pan-up | pan-down ] || pinch-zoom ] | manipulation","transform":"none | <transform-list>","transform-box":"border-box | fill-box | view-box","transform-origin":"[ <length-percentage> | left | center | right | top | bottom ] | [ [ <length-percentage> | left | center | right ] && [ <length-percentage> | top | center | bottom ] ] <length>?","transform-style":"flat | preserve-3d","transition":"<single-transition>#","transition-delay":"<time>#","transition-duration":"<time>#","transition-property":"none | <single-transition-property>#","transition-timing-function":"<timing-function>#","translate":"none | <length-percentage> [ <length-percentage> <length>? ]?","unicode-bidi":"normal | embed | isolate | bidi-override | isolate-override | plaintext | -moz-isolate | -moz-isolate-override | -moz-plaintext | -webkit-isolate","user-select":"auto | text | none | contain | all","vertical-align":"baseline | sub | super | text-top | text-bottom | middle | top | bottom | <percentage> | <length>","visibility":"visible | hidden | collapse","white-space":"normal | pre | nowrap | pre-wrap | pre-line","widows":"<integer>","width":"[ <length> | <percentage> ] && [ border-box | content-box ]? | available | min-content | max-content | fit-content | auto","will-change":"auto | <animateable-feature>#","word-break":"normal | break-all | keep-all | break-word","word-spacing":"normal | <length-percentage>","word-wrap":"normal | break-word","writing-mode":"horizontal-tb | vertical-rl | vertical-lr | sideways-rl | sideways-lr | <svg-writing-mode>","z-index":"auto | <integer>","zoom":"normal | reset | <number> | <percentage>","-moz-background-clip":"padding | border","-moz-border-radius-bottomleft":"<'border-bottom-left-radius'>","-moz-border-radius-bottomright":"<'border-bottom-right-radius'>","-moz-border-radius-topleft":"<'border-top-left-radius'>","-moz-border-radius-topright":"<'border-bottom-right-radius'>","-moz-osx-font-smoothing":"auto | grayscale","-moz-user-select":"none | text | all | -moz-none","-ms-flex-align":"start | end | center | baseline | stretch","-ms-flex-item-align":"auto | start | end | center | baseline | stretch","-ms-flex-line-pack":"start | end | center | justify | distribute | stretch","-ms-flex-negative":"<'flex-shrink'>","-ms-flex-pack":"start | end | center | justify | distribute","-ms-flex-order":"<integer>","-ms-flex-positive":"<'flex-grow'>","-ms-flex-preferred-size":"<'flex-basis'>","-ms-interpolation-mode":"nearest-neighbor | bicubic","-ms-grid-column-align":"start | end | center | stretch","-ms-grid-row-align":"start | end | center | stretch","-webkit-background-clip":"[ <box> | border | padding | content | text ]#","-webkit-column-break-after":"always | auto | avoid","-webkit-column-break-before":"always | auto | avoid","-webkit-column-break-inside":"always | auto | avoid","-webkit-font-smoothing":"auto | none | antialiased | subpixel-antialiased","-webkit-mask-box-image":"[ <url> | <gradient> | none ] [ <length-percentage>{4} <-webkit-mask-box-repeat>{2} ]?","-webkit-print-color-adjust":"economy | exact","-webkit-text-security":"none | circle | disc | square","-webkit-user-drag":"none | element | auto","-webkit-user-select":"auto | none | text | all","alignment-baseline":"auto | baseline | before-edge | text-before-edge | middle | central | after-edge | text-after-edge | ideographic | alphabetic | hanging | mathematical","baseline-shift":"baseline | sub | super | <svg-length>","behavior":"<url>+","clip-rule":"nonzero | evenodd","cue":"<'cue-before'> <'cue-after'>?","cue-after":"<url> <decibel>? | none","cue-before":"<url> <decibel>? | none","dominant-baseline":"auto | use-script | no-change | reset-size | ideographic | alphabetic | hanging | mathematical | central | middle | text-after-edge | text-before-edge","fill":"<paint>","fill-opacity":"<number-zero-one>","fill-rule":"nonzero | evenodd","glyph-orientation-horizontal":"<angle>","glyph-orientation-vertical":"<angle>","kerning":"auto | <svg-length>","marker":"none | <url>","marker-end":"none | <url>","marker-mid":"none | <url>","marker-start":"none | <url>","pause":"<'pause-before'> <'pause-after'>?","pause-after":"<time> | none | x-weak | weak | medium | strong | x-strong","pause-before":"<time> | none | x-weak | weak | medium | strong | x-strong","rest":"<'rest-before'> <'rest-after'>?","rest-after":"<time> | none | x-weak | weak | medium | strong | x-strong","rest-before":"<time> | none | x-weak | weak | medium | strong | x-strong","shape-rendering":"auto | optimizeSpeed | crispEdges | geometricPrecision","src":"[ <url> [ format( <string># ) ]? | local( <family-name> ) ]#","speak":"auto | none | normal","speak-as":"normal | spell-out || digits || [ literal-punctuation | no-punctuation ]","stroke":"<paint>","stroke-dasharray":"none | [ <svg-length>+ ]#","stroke-dashoffset":"<svg-length>","stroke-linecap":"butt | round | square","stroke-linejoin":"miter | round | bevel","stroke-miterlimit":"<number-one-or-greater>","stroke-opacity":"<number-zero-one>","stroke-width":"<svg-length>","text-anchor":"start | middle | end","unicode-range":"<urange>#","voice-balance":"<number> | left | center | right | leftwards | rightwards","voice-duration":"auto | <time>","voice-family":"[ [ <family-name> | <generic-voice> ] , ]* [ <family-name> | <generic-voice> ] | preserve","voice-pitch":"<frequency> && absolute | [ [ x-low | low | medium | high | x-high ] || [ <frequency> | <semitones> | <percentage> ] ]","voice-range":"<frequency> && absolute | [ [ x-low | low | medium | high | x-high ] || [ <frequency> | <semitones> | <percentage> ] ]","voice-rate":"[ normal | x-slow | slow | medium | fast | x-fast ] || <percentage>","voice-stress":"normal | strong | moderate | none | reduced","voice-volume":"silent | [ [ x-soft | soft | medium | loud | x-loud ] || <decibel> ]"}}

lib/common/OffsetToLocation.js

 var adoptBuffer = require('./adopt-buffer');
-var firstCharOffset = require('../tokenizer/utils').firstCharOffset;
+var isBOM = require('../tokenizer').isBOM;
 
@@ -8,3 +8,3 @@ var N = 10;
 
-function computeLinesAndColumns(host, startOffset, source) {
+function computeLinesAndColumns(host, source) {
     var sourceLength = source.length;
@@ -15,2 +15,3 @@ var lines = adoptBuffer(host.lines, sourceLength); // +1
     var column = host.startColumn;
+    var startOffset = source.length > 0 ? isBOM(source.charCodeAt(0)) : 0;
 
@@ -59,3 +60,3 @@ for (var i = startOffset; i < sourceLength; i++) { // -1
         if (!this.linesAndColumnsComputed) {
-            computeLinesAndColumns(this, firstCharOffset(this.source), this.source);
+            computeLinesAndColumns(this, this.source);
             this.linesAndColumnsComputed = true;
@@ -62,0 +63,0 @@ }

lib/common/TokenStream.js

@@ -8,3 +8,3 @@ var constants = require('../tokenizer/const');
 
-var NULL = 0;
+var EOF = TYPE.EOF;
 var WHITESPACE = TYPE.WhiteSpace;
@@ -39,3 +39,3 @@ var COMMENT = TYPE.Comment;
 
-        return NULL;
+        return EOF;
     },
@@ -187,3 +187,3 @@ lookupOffset: function(offset) {
             this.eof = true;
-            this.tokenType = NULL;
+            this.tokenType = EOF;
             this.tokenStart = this.tokenEnd = this.source.length;
@@ -194,3 +194,3 @@ }
     dump: function() {
-        var offset = 0;
+        var offset = this.firstCharOffset;
 
@@ -197,0 +197,0 @@ return Array.prototype.slice.call(this.offsetAndType, 0, this.tokenCount).map(function(item, idx) {

lib/lexer/generic-an-plus-b.js

 var isDigit = require('../tokenizer').isDigit;
 var cmpChar = require('../tokenizer').cmpChar;
 var TYPE = require('../tokenizer').TYPE;
-var CHARCODE = require('../tokenizer').CHARCODE;
 
@@ -12,5 +11,5 @@ var DELIM = TYPE.Delim;
 var DIMENSION = TYPE.Dimension;
-var PLUSSIGN = CHARCODE.PlusSign;
-var HYPHENMINUS = CHARCODE.HyphenMinus;
-var N = 110; // 'n'.charCodeAt(0)
+var PLUSSIGN = 0x002B;    // U+002B PLUS SIGN (+)
+var HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
+var N = 0x006E;           // U+006E LATIN SMALL LETTER N (n)
 var DISALLOW_SIGN = true;
@@ -17,0 +16,0 @@ var ALLOW_SIGN = false;

lib/lexer/generic-urange.js

 var isHexDigit = require('../tokenizer').isHexDigit;
 var cmpChar = require('../tokenizer').cmpChar;
 var TYPE = require('../tokenizer').TYPE;
-var CHARCODE = require('../tokenizer').CHARCODE;
 
@@ -10,6 +9,6 @@ var IDENT = TYPE.Ident;
 var DIMENSION = TYPE.Dimension;
-var PLUSSIGN = CHARCODE.PlusSign;
-var HYPHENMINUS = CHARCODE.HyphenMinus;
-var QUESTIONMARK = CHARCODE.QuestionMark;
-var U = 117; // 'u'.charCodeAt()
+var PLUSSIGN = 0x002B;     // U+002B PLUS SIGN (+)
+var HYPHENMINUS = 0x002D;  // U+002D HYPHEN-MINUS (-)
+var QUESTIONMARK = 0x003F; // U+003F QUESTION MARK (?)
+var U = 0x0075;            // U+0075 LATIN SMALL LETTER U (u)
 
@@ -16,0 +15,0 @@ function isDelim(token, code) {

lib/lexer/generic.js

@@ -1,8 +0,8 @@
-var tokenizerUtils = require('../tokenizer/utils');
-var isIdentifierStart = tokenizerUtils.isIdentifierStart;
-var isHexDigit = tokenizerUtils.isHexDigit;
-var isDigit = tokenizerUtils.isDigit;
-var cmpStr = tokenizerUtils.cmpStr;
-var consumeNumber = tokenizerUtils.consumeNumber;
-var TYPE = require('../tokenizer/const').TYPE;
+var tokenizer = require('../tokenizer');
+var isIdentifierStart = tokenizer.isIdentifierStart;
+var isHexDigit = tokenizer.isHexDigit;
+var isDigit = tokenizer.isDigit;
+var cmpStr = tokenizer.cmpStr;
+var consumeNumber = tokenizer.consumeNumber;
+var TYPE = tokenizer.TYPE;
 var anPlusB = require('./generic-an-plus-b');
@@ -399,3 +399,2 @@ var urange = require('./generic-urange');
     return function(token, getNextToken, opts) {
-        debugger;
         if (token === null || token.type !== TYPE.Dimension) {
@@ -402,0 +401,0 @@ return 0;

lib/lexer/match.js

@@ -17,14 +17,18 @@ var hasOwnProperty = Object.prototype.hasOwnProperty;
 
-var ITERATION_LIMIT = 10000;
+var ITERATION_LIMIT = 15000;
 var totalIterationCount = 0;
 
-function mapList(list, fn) {
-    var result = [];
+function reverseList(list) {
+    var prev = null;
+    var next = null;
+    var item = list;
 
-    while (list) {
-        result.unshift(fn(list));
-        list = list.prev;
+    while (item !== null) {
+        next = item.prev;
+        item.prev = prev;
+        prev = item;
+        item = next;
     }
 
-    return result;
+    return prev;
 }
@@ -59,9 +63,9 @@
 
-    var ch = token.value.charAt(token.value.length - 1);
-
     return (
-        ch === ',' ||
-        ch === '(' ||
-        ch === '[' ||
-        ch === '/'
+        token.type === TYPE.Comma ||
+        token.type === TYPE.Function ||
+        token.type === TYPE.LeftParenthesis ||
+        token.type === TYPE.LeftSquareBracket ||
+        token.type === TYPE.LeftCurlyBracket ||
+        token.type === TYPE.Delim
     );
@@ -75,8 +79,7 @@ }
 
-    var ch = token.value.charAt(0);
-
     return (
-        ch === ')' ||
-        ch === ']' ||
-        ch === '/'
+        token.type === TYPE.RightParenthesis ||
+        token.type === TYPE.RightSquareBracket ||
+        token.type === TYPE.RightCurlyBracket ||
+        token.type === TYPE.Delim
     );
@@ -90,3 +93,3 @@ }
             token = tokenIndex < tokens.length ? tokens[tokenIndex] : null;
-        } while (token !== null && !/\S/.test(token.value));
+        } while (token !== null && (token.type === TYPE.WhiteSpace || token.type === TYPE.Comment));
     }
@@ -107,3 +110,2 @@
             tokenIndex: tokenIndex,
-            token: token,
             prev: prev
@@ -144,3 +146,3 @@ };
         syntaxStack = {
-            syntax: state,
+            syntax: state.syntax,
             opts: state.syntax.opts || (syntaxStack !== null && syntaxStack.opts) || null,
@@ -198,2 +200,10 @@ prev: syntaxStack
     while (exitReason === null && ++iterationCount < ITERATION_LIMIT) {
+        // function mapList(list, fn) {
+        //     var result = [];
+        //     while (list) {
+        //         result.unshift(fn(list));
+        //         list = list.prev;
+        //     }
+        //     return result;
+        // }
         // console.log('--\n',
@@ -203,6 +213,4 @@ //     '#' + iterationCount,
         //         match: mapList(matchStack, x => x.type === TOKEN ? x.token && x.token.value : x.syntax ? ({ [OPEN_SYNTAX]: '<', [CLOSE_SYNTAX]: '</' }[x.type] || x.type) + '!' + x.syntax.name : null),
-        //         elseStack: mapList(elseStack, x => x.id),
-        //         thenStack: mapList(thenStack, x => x.id),
         //         token: token && token.value,
-        //         tokenCursor,
+        //         tokenIndex,
         //         syntax: syntax.type + (syntax.id ? ' #' + syntax.id : '')
@@ -233,3 +241,3 @@ //     }, { depth: null })
                 if (state === DISALLOW_EMPTY) {
-                    if (thenStack.matchStack.token === matchStack.token) {
+                    if (thenStack.matchStack === matchStack) {
                         state = MISMATCH;
@@ -243,3 +251,3 @@ break;
                 // close syntax if needed
-                while (syntaxStack !== null && thenStack.syntaxStack !== syntaxStack) {
+                while (thenStack.syntaxStack !== syntaxStack) {
                     closeSyntax();
@@ -276,3 +284,3 @@ }
                 tokenIndex = elseStack.tokenIndex;
-                token = elseStack.token;
+                token = tokenIndex < tokens.length ? tokens[tokenIndex] : null;
 
@@ -380,6 +388,6 @@ // pop stack
                 var opts = syntaxStack !== null ? syntaxStack.opts : null;
-                var tokenCount = Math.floor(state.fn(token, getNextToken, opts));
+                var lastTokenIndex = tokenIndex + Math.floor(state.fn(token, getNextToken, opts));
 
-                if (!isNaN(tokenCount) && tokenCount > 0) {
-                    for (var lastTokenIndex = tokenIndex + tokenCount; tokenIndex < lastTokenIndex;) {
+                if (!isNaN(lastTokenIndex) && lastTokenIndex > tokenIndex) {
+                    while (tokenIndex < lastTokenIndex) {
                         addTokenToMatch();
@@ -449,3 +457,2 @@ }
                         addTokenToMatch();
-
                         state = MATCH;
@@ -463,3 +470,2 @@ break;
                     addTokenToMatch();
-
                     state = MATCH;
@@ -475,3 +481,2 @@ break;
                     addTokenToMatch();
-
                     state = MATCH;
@@ -485,3 +490,3 @@ break;
             case 'Comma':
-                if (token !== null && token.value === ',') {
+                if (token !== null && token.type === TYPE.Comma) {
                     if (isCommaContextStart(matchStack.token)) {
@@ -507,3 +512,3 @@ state = MISMATCH;
                 if (areStringsEqualCaseInsensitive(string, state.value)) {
-                    for (; tokenIndex < lastTokenIndex;) {
+                    while (tokenIndex < lastTokenIndex) {
                         addTokenToMatch();
@@ -526,13 +531,17 @@ }
 
-    if (exitReason === null) {
-        console.warn('[csstree-match] BREAK after ' + ITERATION_LIMIT + ' iterations');
-        exitReason = EXIT_REASON_ITERATION_LIMIT;
-    }
+    switch (exitReason) {
+        case null:
+            console.warn('[csstree-match] BREAK after ' + ITERATION_LIMIT + ' iterations');
+            exitReason = EXIT_REASON_ITERATION_LIMIT;
+            matchStack = null;
+            break;
 
-    if (exitReason === EXIT_REASON_MATCH) {
-        while (syntaxStack !== null) {
-            closeSyntax();
-        }
-    } else {
-        matchStack = null;
+        case EXIT_REASON_MATCH:
+            while (syntaxStack !== null) {
+                closeSyntax();
+            }
+            break;
+
+        default:
+            matchStack = null;
     }
@@ -553,13 +562,29 @@
     if (matchResult.match !== null) {
-        matchResult.match = mapList(matchResult.match, function(item) {
-            if (item.type === OPEN_SYNTAX || item.type === CLOSE_SYNTAX) {
-                return { type: item.type, syntax: item.syntax };
+        var item = reverseList(matchResult.match).prev;
+
+        matchResult.match = [];
+
+        while (item !== null) {
+            switch (item.type) {
+                case STUB:
+                    break;
+
+                case OPEN_SYNTAX:
+                case CLOSE_SYNTAX:
+                    matchResult.match.push({
+                        type: item.type,
+                        syntax: item.syntax
+                    });
+                    break;
+
+                default:
+                    matchResult.match.push({
+                        token: item.token.value,
+                        node: item.token.node
+                    });
+                    break;
             }
 
-            return {
-                syntax: item.syntax,
-                token: item.token && item.token.value,
-                node: item.token && item.token.node
-            };
-        }).slice(1);
+            item = item.prev;
+        }
     }
@@ -577,3 +602,3 @@
 
-    var cursor = matchResult.match;
+    var item = matchResult.match;
     var host = matchResult.match = {
@@ -583,33 +608,21 @@ syntax: matchGraph.syntax || null,
     };
-    var stack = [host];
+    var hostStack = [host];
 
-    // revert a list
-    var prev = null;
-    var next = null;
-    while (cursor !== null) {
-        next = cursor.prev;
-        cursor.prev = prev;
-        prev = cursor;
-        cursor = next;
-    }
+    // revert a list and start with 2nd item since 1st is a stub item
+    item = reverseList(item).prev;
 
-    // init the cursor to start with 2nd item since 1st is a stub item
-    cursor = prev.prev;
-
     // build a tree
-    while (cursor !== null && cursor.syntax !== null) {
-        var entry = cursor;
-
-        switch (entry.type) {
+    while (item !== null) {
+        switch (item.type) {
             case OPEN_SYNTAX:
                 host.match.push(host = {
-                    syntax: entry.syntax,
+                    syntax: item.syntax,
                     match: []
                 });
-                stack.push(host);
+                hostStack.push(host);
                 break;
 
             case CLOSE_SYNTAX:
-                stack.pop();
-                host = stack[stack.length - 1];
+                hostStack.pop();
+                host = hostStack[hostStack.length - 1];
                 break;
@@ -619,9 +632,9 @@
                 host.match.push({
-                    syntax: entry.syntax || null,
-                    token: entry.token.value,
-                    node: entry.token.node
+                    syntax: item.syntax || null,
+                    token: item.token.value,
+                    node: item.token.node
                 });
         }
 
-        cursor = cursor.prev;
+        item = item.prev;
     }
@@ -628,0 +641,0 @@

lib/parser/create.js

@@ -20,3 +20,3 @@ var OffsetToLocation = require('../common/OffsetToLocation');
 var NUMBER = TYPE.Number;
-var NUMBERSIGN = constants.CHARCODE.NumberSign;
+var NUMBERSIGN = 0x0023; // U+0023 NUMBER SIGN (#)
 var NULL = 0;
@@ -23,0 +23,0 @@

lib/syntax/node/AnPlusB.js

 var cmpChar = require('../../tokenizer').cmpChar;
 var isDigit = require('../../tokenizer').isDigit;
 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
@@ -11,5 +10,5 @@ var WHITESPACE = TYPE.WhiteSpace;
 var DIMENSION = TYPE.Dimension;
-var PLUSSIGN = CHARCODE.PlusSign;
-var HYPHENMINUS = CHARCODE.HyphenMinus;
-var N = 110; // 'n'.charCodeAt(0)
+var PLUSSIGN = 0x002B;    // U+002B PLUS SIGN (+)
+var HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
+var N = 0x006E;           // U+006E LATIN SMALL LETTER N (n)
 var DISALLOW_SIGN = true;
@@ -16,0 +15,0 @@ var ALLOW_SIGN = false;

lib/syntax/node/AttributeSelector.js

 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
@@ -9,8 +8,8 @@ var IDENT = TYPE.Ident;
 var RIGHTSQUAREBRACKET = TYPE.RightSquareBracket;
-var DOLLARSIGN = CHARCODE.DollarSign;
-var ASTERISK = CHARCODE.Asterisk;
-var EQUALSSIGN = CHARCODE.EqualsSign;
-var CIRCUMFLEXACCENT = CHARCODE.CircumflexAccent;
-var VERTICALLINE = CHARCODE.VerticalLine;
-var TILDE = CHARCODE.Tilde;
+var DOLLARSIGN = 0x0024;       // U+0024 DOLLAR SIGN ($)
+var ASTERISK = 0x002A;         // U+002A ASTERISK (*)
+var EQUALSSIGN = 0x003D;       // U+003D EQUALS SIGN (=)
+var CIRCUMFLEXACCENT = 0x005E; // U+005E (^)
+var VERTICALLINE = 0x007C;     // U+007C VERTICAL LINE (|)
+var TILDE = 0x007E;            // U+007E TILDE (~)
 
@@ -17,0 +16,0 @@ function getAttributeName() {

lib/syntax/node/ClassSelector.js

 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
 var IDENT = TYPE.Ident;
-var FULLSTOP = CHARCODE.FullStop;
+var FULLSTOP = 0x002E; // U+002E FULL STOP (.)
 
@@ -7,0 +6,0 @@ // '.' ident

lib/syntax/node/Combinator.js

 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
 var IDENT = TYPE.Ident;
-var PLUSSIGN = CHARCODE.PlusSign;
-var SOLIDUS = CHARCODE.Solidus;
-var GREATERTHANSIGN = CHARCODE.GreaterThanSign;
-var TILDE = CHARCODE.Tilde;
+var PLUSSIGN = 0x002B;        // U+002B PLUS SIGN (+)
+var SOLIDUS = 0x002F;         // U+002F SOLIDUS (/)
+var GREATERTHANSIGN = 0x003E; // U+003E GREATER-THAN SIGN (>)
+var TILDE = 0x007E;           // U+007E TILDE (~)
 
@@ -10,0 +9,0 @@ // + | > | ~ | /deep/

lib/syntax/node/Comment.js

 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
-var ASTERISK = CHARCODE.Asterisk;
-var SOLIDUS = CHARCODE.Solidus;
 var COMMENT = TYPE.Comment;
+var ASTERISK = 0x002A;        // U+002A ASTERISK (*)
+var SOLIDUS = 0x002F;         // U+002F SOLIDUS (/)
 
@@ -8,0 +7,0 @@ // '/*' .* '*/'

lib/syntax/node/Declaration.js

 var isCustomProperty = require('../../utils/names').isCustomProperty;
 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 var rawMode = require('./Raw').mode;
@@ -11,9 +10,9 @@
 var DELIM = TYPE.Delim;
-var EXCLAMATIONMARK = CHARCODE.ExclamationMark;
-var SOLIDUS = CHARCODE.Solidus;
-var ASTERISK = CHARCODE.Asterisk;
-var AMPERSAND = CHARCODE.Ampersand;
-var DOLLARSIGN = CHARCODE.DollarSign;
-var PLUSSIGN = CHARCODE.PlusSign;
-var NUMBERSIGN = CHARCODE.NumberSign;
+var EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
+var NUMBERSIGN = 0x0023;      // U+0023 NUMBER SIGN (#)
+var DOLLARSIGN = 0x0024;      // U+0024 DOLLAR SIGN ($)
+var AMPERSAND = 0x0026;       // U+0026 ANPERSAND (&)
+var ASTERISK = 0x002A;        // U+002A ASTERISK (*)
+var PLUSSIGN = 0x002B;        // U+002B PLUS SIGN (+)
+var SOLIDUS = 0x002F;         // U+002F SOLIDUS (/)
 
@@ -20,0 +19,0 @@ function consumeValueRaw(startToken) {

lib/syntax/node/Ratio.js

 var isDigit = require('../../tokenizer').isDigit;
 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
 var NUMBER = TYPE.Number;
 var DELIM = TYPE.Delim;
-var SOLIDUS = CHARCODE.Solidus;
-var FULLSTOP = CHARCODE.FullStop;
+var SOLIDUS = 0x002F;  // U+002F SOLIDUS (/)
+var FULLSTOP = 0x002E; // U+002E FULL STOP (.)
 
@@ -10,0 +9,0 @@ // Terms of <ratio> should be a positive numbers (not zero or negative)

lib/syntax/node/Raw.js

 var tokenizer = require('../../tokenizer');
 var TYPE = tokenizer.TYPE;
-var CHARCODE = tokenizer.CHARCODE;
 
-var EXCLAMATIONMARK = CHARCODE.ExclamationMark;
 var WhiteSpace = TYPE.WhiteSpace;
@@ -10,2 +8,3 @@ var Semicolon = TYPE.Semicolon;
 var Delim = TYPE.Delim;
+var EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
 
@@ -12,0 +11,0 @@ function getOffsetExcludeWS() {

lib/syntax/node/StyleSheet.js

 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
@@ -9,3 +8,3 @@ var WHITESPACE = TYPE.WhiteSpace;
 var CDC = TYPE.CDC;
-var EXCLAMATIONMARK = CHARCODE.ExclamationMark;
+var EXCLAMATIONMARK = 0x0021; // U+0021 EXCLAMATION MARK (!)
 
@@ -12,0 +11,0 @@ function consumeRaw(startToken) {

lib/syntax/node/TypeSelector.js

 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
 var IDENT = TYPE.Ident;
-var ASTERISK = CHARCODE.Asterisk;
-var VERTICALLINE = CHARCODE.VerticalLine;
+var ASTERISK = 0x002A;     // U+002A ASTERISK (*)
+var VERTICALLINE = 0x007C; // U+007C VERTICAL LINE (|)
 
@@ -8,0 +7,0 @@ function eatIdentifierOrAsterisk() {

lib/syntax/node/UnicodeRange.js

@@ -5,3 +5,2 @@ var isHexDigit = require('../../tokenizer').isHexDigit;
 var NAME = require('../../tokenizer').NAME;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
@@ -11,6 +10,6 @@ var IDENT = TYPE.Ident;
 var DIMENSION = TYPE.Dimension;
-var PLUSSIGN = CHARCODE.PlusSign;
-var HYPHENMINUS = CHARCODE.HyphenMinus;
-var QUESTIONMARK = CHARCODE.QuestionMark;
-var U = 117; // 'u'.charCodeAt()
+var PLUSSIGN = 0x002B;     // U+002B PLUS SIGN (+)
+var HYPHENMINUS = 0x002D;  // U+002D HYPHEN-MINUS (-)
+var QUESTIONMARK = 0x003F; // U+003F QUESTION MARK (?)
+var U = 0x0075;            // U+0075 LATIN SMALL LETTER U (u)
 
@@ -17,0 +16,0 @@ function eatHexSequence(offset, allowDash) {

lib/syntax/scope/default.js

 var cmpChar = require('../../tokenizer').cmpChar;
 var cmpStr = require('../../tokenizer').cmpStr;
 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
@@ -18,8 +17,8 @@ var IDENT = TYPE.Ident;
 var DELIM = TYPE.Delim;
-var PLUSSIGN = CHARCODE.PlusSign;
-var HYPHENMINUS = CHARCODE.HyphenMinus;
-var SOLIDUS = CHARCODE.Solidus;
-var ASTERISK = CHARCODE.Asterisk;
-var NUMBERSIGN = CHARCODE.NumberSign;
-var U = 117; // 'u'.charCodeAt(0)
+var NUMBERSIGN = 0x0023;  // U+0023 NUMBER SIGN (#)
+var ASTERISK = 0x002A;    // U+002A ASTERISK (*)
+var PLUSSIGN = 0x002B;    // U+002B PLUS SIGN (+)
+var HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-)
+var SOLIDUS = 0x002F;     // U+002F SOLIDUS (/)
+var U = 0x0075;           // U+0075 LATIN SMALL LETTER U (u)
 
@@ -26,0 +25,0 @@ module.exports = function defaultRecognizer(context) {

lib/syntax/scope/selector.js

 var TYPE = require('../../tokenizer').TYPE;
-var CHARCODE = require('../../tokenizer').CHARCODE;
 
@@ -12,10 +11,10 @@ var DELIM = TYPE.Delim;
 var LEFTSQUAREBRACKET = TYPE.LeftSquareBracket;
-var NUMBERSIGN = CHARCODE.NumberSign;
-var PLUSSIGN = CHARCODE.PlusSign;
-var SOLIDUS = CHARCODE.Solidus;
-var ASTERISK = CHARCODE.Asterisk;
-var FULLSTOP = CHARCODE.FullStop;
-var GREATERTHANSIGN = CHARCODE.GreaterThanSign;
-var VERTICALLINE = CHARCODE.VerticalLine;
-var TILDE = CHARCODE.Tilde;
+var NUMBERSIGN = 0x0023;      // U+0023 NUMBER SIGN (#)
+var ASTERISK = 0x002A;        // U+002A ASTERISK (*)
+var PLUSSIGN = 0x002B;        // U+002B PLUS SIGN (+)
+var SOLIDUS = 0x002F;         // U+002F SOLIDUS (/)
+var FULLSTOP = 0x002E;        // U+002E FULL STOP (.)
+var GREATERTHANSIGN = 0x003E; // U+003E GREATER-THAN SIGN (>)
+var VERTICALLINE = 0x007C;    // U+007C VERTICAL LINE (|)
+var TILDE = 0x007E;           // U+007E TILDE (~)
 
@@ -22,0 +21,0 @@ function getNode(context) {

lib/tokenizer/char-code-definitions.js

@@ -1,6 +0,1 @@
-var TAB = 9;
-var N = 10;
-var F = 12;
-var R = 13;
-var SPACE = 32;
 var EOF = 0;
@@ -81,3 +76,3 @@
 function isNewline(code) {
-    return code === R || code === N || code === F;
+    return code === 0x000A || code === 0x000D || code === 0x000C;
 }
@@ -88,3 +83,3 @@
 function isWhiteSpace(code) {
-    return isNewline(code) || code === SPACE || code === TAB;
+    return isNewline(code) || code === 0x0020 || code === 0x0009;
 }
@@ -175,2 +170,65 @@
 
+//
+// Misc
+//
+
+// detect BOM (https://en.wikipedia.org/wiki/Byte_order_mark)
+function isBOM(code) {
+    // UTF-16BE
+    if (code === 0xFEFF) {
+        return 1;
+    }
+
+    // UTF-16LE
+    if (code === 0xFFFE) {
+        return 1;
+    }
+
+    return 0;
+}
+
+// Fast code category
+//
+// https://drafts.csswg.org/css-syntax/#tokenizer-definitions
+// > non-ASCII code point
+// >   A code point with a value equal to or greater than U+0080 <control>
+// > name-start code point
+// >   A letter, a non-ASCII code point, or U+005F LOW LINE (_).
+// > name code point
+// >   A name-start code point, a digit, or U+002D HYPHEN-MINUS (-)
+// That means only ASCII code points has a special meaning and we define a maps for 0..127 codes only
+var CATEGORY = new Array(0x80);
+charCodeCategory.Eof = 0x80;
+charCodeCategory.WhiteSpace = 0x82;
+charCodeCategory.Digit = 0x83;
+charCodeCategory.NameStart = 0x84;
+charCodeCategory.NonPrintable = 0x85;
+
+for (var i = 0; i < CATEGORY.length; i++) {
+    switch (true) {
+        case isWhiteSpace(i):
+            CATEGORY[i] = charCodeCategory.WhiteSpace;
+            break;
+
+        case isDigit(i):
+            CATEGORY[i] = charCodeCategory.Digit;
+            break;
+
+        case isNameStart(i):
+            CATEGORY[i] = charCodeCategory.NameStart;
+            break;
+
+        case isNonPrintable(i):
+            CATEGORY[i] = charCodeCategory.NonPrintable;
+            break;
+
+        default:
+            CATEGORY[i] = i || charCodeCategory.Eof;
+    }
+}
+
+function charCodeCategory(code) {
+    return code < 0x80 ? CATEGORY[code] : charCodeCategory.NameStart;
+};
+
 module.exports = {
@@ -190,3 +248,6 @@ isDigit: isDigit,
     isIdentifierStart: isIdentifierStart,
-    isNumberStart: isNumberStart
+    isNumberStart: isNumberStart,
+
+    isBOM: isBOM,
+    charCodeCategory: charCodeCategory
 };

lib/tokenizer/const.js

@@ -1,14 +0,5 @@
-const charCodeDef = require('./char-code-definitions');
-
-function fillCodeTypes(array, check, type) {
-    for (var i = 0; i < array.length; i++) {
-        if (check(i)) {
-            array[i] = type;
-        }
-    }
-}
-
 // CSS Syntax Module Level 3
 // https://www.w3.org/TR/css-syntax-3/
 var TYPE = {
+    EOF: 0,                 // <EOF-token>
     Ident: 1,               // <ident-token>
@@ -46,90 +37,5 @@ Function: 2,            // <function-token>
 
-var CHARCODE = {
-    Tab:                   9,  // \t
-    LineFeed:             10,  // \n
-    FormFeed:             12,  // \f
-    CarriageReturn:       13,  // \r
-    Space:                32,
-    ExclamationMark:      33,  // !
-    QuotationMark:        34,  // "
-    NumberSign:           35,  // #
-    DollarSign:           36,  // $
-    PercentSign:          37,  // %
-    Ampersand:            38,  // &
-    Apostrophe:           39,  // '
-    LeftParenthesis:      40,  // (
-    RightParenthesis:     41,  // )
-    Asterisk:             42,  // *
-    PlusSign:             43,  // +
-    Comma:                44,  // ,
-    HyphenMinus:          45,  // -
-    FullStop:             46,  // .
-    Solidus:              47,  // /
-    Colon:                58,  // :
-    Semicolon:            59,  // ;
-    LessThanSign:         60,  // <
-    EqualsSign:           61,  // =
-    GreaterThanSign:      62,  // >
-    QuestionMark:         63,  // ?
-    CommercialAt:         64,  // @
-    LeftSquareBracket:    91,  // [
-    Backslash:            92,  // \
-    RightSquareBracket:   93,  // ]
-    CircumflexAccent:     94,  // ^
-    LowLine:              95,  // _
-    GraveAccent:          96,  // `
-    LeftCurlyBracket:    123,  // {
-    VerticalLine:        124,  // |
-    RightCurlyBracket:   125,  // }
-    Tilde:               126   // ~
-};
-
-var INPUT_STREAM_CODE_TYPE = {
-    Eof: 0x80,
-    Delim: 0x81,
-    WhiteSpace: 0x82,
-    Digit: 0x83,
-    NameStart: 0x84,
-    NonPrintable: 0x85,
-    Newline: 0x86
-};
-
-// https://drafts.csswg.org/css-syntax/#tokenizer-definitions
-// > non-ASCII code point
-// >   A code point with a value equal to or greater than U+0080 <control>
-// > name-start code point
-// >   A letter, a non-ASCII code point, or U+005F LOW LINE (_).
-// > name code point
-// >   A name-start code point, a digit, or U+002D HYPHEN-MINUS (-)
-// That means only ASCII code points has a special meaning and we define a maps for 0..127 codes only
-var SafeUint32Array = typeof Uint32Array !== 'undefined' ? Uint32Array : Array; // fallback on Array when TypedArray is not supported
-var INPUT_STREAM_CODE = new SafeUint32Array(0x80);
-var INPUT_STREAM_CODE_STRING = new SafeUint32Array(0x80);
-var INPUT_STREAM_CODE_URL = new SafeUint32Array(0x80);
-
-for (var i = 0; i < INPUT_STREAM_CODE.length; i++) {
-    INPUT_STREAM_CODE_STRING[i] =
-    INPUT_STREAM_CODE_URL[i] =
-    INPUT_STREAM_CODE[i] = i || INPUT_STREAM_CODE_TYPE.Eof;
-}
-
-fillCodeTypes(INPUT_STREAM_CODE, charCodeDef.isWhiteSpace, INPUT_STREAM_CODE_TYPE.WhiteSpace);
-fillCodeTypes(INPUT_STREAM_CODE, charCodeDef.isDigit, INPUT_STREAM_CODE_TYPE.Digit);
-fillCodeTypes(INPUT_STREAM_CODE, charCodeDef.isNameStart, INPUT_STREAM_CODE_TYPE.NameStart);
-
-fillCodeTypes(INPUT_STREAM_CODE_STRING, charCodeDef.isNewline, INPUT_STREAM_CODE_TYPE.Newline);
-
-fillCodeTypes(INPUT_STREAM_CODE_URL, charCodeDef.isWhiteSpace, INPUT_STREAM_CODE_TYPE.WhiteSpace);
-fillCodeTypes(INPUT_STREAM_CODE_URL, charCodeDef.isNonPrintable, INPUT_STREAM_CODE_TYPE.NonPrintable);
-
 module.exports = {
     TYPE: TYPE,
-    NAME: NAME,
-
-    CHARCODE: CHARCODE,
-
-    INPUT_STREAM_CODE: INPUT_STREAM_CODE,
-    INPUT_STREAM_CODE_STRING: INPUT_STREAM_CODE_STRING,
-    INPUT_STREAM_CODE_URL: INPUT_STREAM_CODE_URL,
-    INPUT_STREAM_CODE_TYPE: INPUT_STREAM_CODE_TYPE
+    NAME: NAME
 };

lib/tokenizer/index.js

@@ -6,17 +6,15 @@ var TokenStream = require('../common/TokenStream');
 var TYPE = constants.TYPE;
-var CHARCODE = constants.CHARCODE;
-var INPUT_STREAM_CODE = constants.INPUT_STREAM_CODE;
-var INPUT_STREAM_CODE_STRING = constants.INPUT_STREAM_CODE_STRING;
-var INPUT_STREAM_CODE_URL = constants.INPUT_STREAM_CODE_URL;
-var INPUT_STREAM_CODE_TYPE = constants.INPUT_STREAM_CODE_TYPE;
 
+var charCodeDefinitions = require('./char-code-definitions');
+var isNewline = charCodeDefinitions.isNewline;
+var isName = charCodeDefinitions.isName;
+var isValidEscape = charCodeDefinitions.isValidEscape;
+var isNumberStart = charCodeDefinitions.isNumberStart;
+var isIdentifierStart = charCodeDefinitions.isIdentifierStart;
+var charCodeCategory = charCodeDefinitions.charCodeCategory;
+var isBOM = charCodeDefinitions.isBOM;
+
 var utils = require('./utils');
-var firstCharOffset = utils.firstCharOffset;
 var cmpStr = utils.cmpStr;
 var getNewlineLength = utils.getNewlineLength;
-var isNewline = utils.isNewline;
-var isName = utils.isName;
-var isValidEscape = utils.isValidEscape;
-var isNumberStart = utils.isNumberStart;
-var isIdentifierStart = utils.isIdentifierStart;
 var findWhiteSpaceEnd = utils.findWhiteSpaceEnd;
@@ -28,8 +26,2 @@ var consumeEscaped = utils.consumeEscaped;
 
-var ASTERISK = CHARCODE.Asterisk;
-var HYPHENMINUS = CHARCODE.HyphenMinus;
-var GREATERTHANSIGN = CHARCODE.GreaterThanSign;
-var EXCLAMATIONMARK = CHARCODE.ExclamationMark;
-var PERCENTSIGN = CHARCODE.PercentSign;
-
 var OFFSET_MASK = 0x00FFFFFF;
@@ -59,3 +51,3 @@ var TYPE_SHIFT = 24;
         // Otherwise, if the next input code point is U+0025 PERCENTAGE SIGN (%), consume it.
-        if (getCharCode(offset) === PERCENTSIGN) {
+        if (getCharCode(offset) === 0x0025) {
             // Create a <percentage-token> with the same value as number, and return it.
@@ -80,10 +72,9 @@ type = TYPE.Percentage;
         // and the next input code point is U+0028 LEFT PARENTHESIS ((), consume it.
-        if (cmpStr(source, nameStartOffset, offset, 'url') &&
-            getCharCode(offset) === 0x0028) {
+        if (cmpStr(source, nameStartOffset, offset, 'url') && getCharCode(offset) === 0x0028) {
             // While the next two input code points are whitespace, consume the next input code point.
+            offset = findWhiteSpaceEnd(source, offset + 1);
+
             // If the next one or two input code points are U+0022 QUOTATION MARK ("), U+0027 APOSTROPHE ('),
             // or whitespace followed by U+0022 QUOTATION MARK (") or U+0027 APOSTROPHE ('),
             // then create a <function-token> with its value set to string and return it.
-            offset = findWhiteSpaceEnd(source, offset + 1);
-
             if (getCharCode(offset) === 0x0022 ||
@@ -129,3 +120,3 @@ getCharCode(offset) === 0x0027) {
 
-            switch (code < 0x80 ? INPUT_STREAM_CODE_STRING[code] : code) {
+            switch (charCodeCategory(code)) {
                 // ending code point
@@ -138,3 +129,3 @@ case endingCodePoint:
                 // EOF
-                case INPUT_STREAM_CODE_TYPE.Eof:
+                case charCodeCategory.Eof:
                     // This is a parse error. Return the <string-token>.
@@ -144,8 +135,11 @@ return;
                 // newline
-                case INPUT_STREAM_CODE_TYPE.Newline:
-                    // This is a parse error. Reconsume the current input code point,
-                    // create a <bad-string-token>, and return it.
-                    offset += getNewlineLength(source, offset, code);
-                    type = TYPE.BadString;
-                    return;
+                case charCodeCategory.WhiteSpace:
+                    if (isNewline(code)) {
+                        // This is a parse error. Reconsume the current input code point,
+                        // create a <bad-string-token>, and return it.
+                        offset += getNewlineLength(source, offset, code);
+                        type = TYPE.BadString;
+                        return;
+                    }
+                    break;
 
@@ -194,3 +188,3 @@ // U+005C REVERSE SOLIDUS (\)
 
-            switch (code < 0x80 ? INPUT_STREAM_CODE_URL[code] : code) {
+            switch (charCodeCategory(code)) {
                 // U+0029 RIGHT PARENTHESIS ())
@@ -203,3 +197,3 @@ case 0x0029:
                 // EOF
-                case INPUT_STREAM_CODE_TYPE.Eof:
+                case charCodeCategory.Eof:
                     // This is a parse error. Return the <url-token>.
@@ -209,3 +203,3 @@ return;
                 // whitespace
-                case INPUT_STREAM_CODE_TYPE.WhiteSpace:
+                case charCodeCategory.WhiteSpace:
                     // Consume as much whitespace as possible.
@@ -237,3 +231,3 @@ offset = findWhiteSpaceEnd(source, offset);
                 case 0x0028:
-                case INPUT_STREAM_CODE_TYPE.NonPrintable:
+                case charCodeCategory.NonPrintable:
                     // This is a parse error. Consume the remnants of a bad url,
@@ -273,3 +267,2 @@ // create a <bad-url-token>, and return it.
 
-    var start = firstCharOffset(source);
     var sourceLength = source.length;
@@ -279,2 +272,3 @@ var offsetAndType = adoptBuffer(stream.offsetAndType, sourceLength + 1); // +1 because of eof-token
     var tokenCount = 0;
+    var start = isBOM(getCharCode(0));
     var offset = start;
@@ -293,5 +287,5 @@ var balanceCloseType = 0;
 
-        switch (code < 0x80 ? INPUT_STREAM_CODE[code] : INPUT_STREAM_CODE_TYPE.NameStart) {
+        switch (charCodeCategory(code)) {
             // whitespace
-            case INPUT_STREAM_CODE_TYPE.WhiteSpace:
+            case charCodeCategory.WhiteSpace:
                 // Consume as much whitespace as possible. Return a <whitespace-token>.
@@ -379,4 +373,4 @@ type = TYPE.WhiteSpace;
                     // Otherwise, if the next 2 input code points are U+002D HYPHEN-MINUS U+003E GREATER-THAN SIGN (->), consume them and return a <CDC-token>.
-                    if (getCharCode(offset + 1) === HYPHENMINUS &&
-                        getCharCode(offset + 2) === GREATERTHANSIGN) {
+                    if (getCharCode(offset + 1) === 0x002D &&
+                        getCharCode(offset + 2) === 0x003E) {
                         type = TYPE.CDC;
@@ -415,3 +409,3 @@ offset = offset + 3;
                 // If the next two input code point are U+002F SOLIDUS (/) followed by a U+002A ASTERISK (*),
-                if (getCharCode(offset + 1) === ASTERISK) {
+                if (getCharCode(offset + 1) === 0x002A) {
                     // ... consume them and all following code points up to and including the first U+002A ASTERISK (*)
@@ -447,5 +441,5 @@ // followed by a U+002F SOLIDUS (/), or up to an EOF code point.
                 // If the next 3 input code points are U+0021 EXCLAMATION MARK U+002D HYPHEN-MINUS U+002D HYPHEN-MINUS (!--), ...
-                if (getCharCode(offset + 1) === EXCLAMATIONMARK &&
-                    getCharCode(offset + 2) === HYPHENMINUS &&
-                    getCharCode(offset + 3) === HYPHENMINUS) {
+                if (getCharCode(offset + 1) === 0x0021 &&
+                    getCharCode(offset + 2) === 0x002D &&
+                    getCharCode(offset + 3) === 0x002D) {
                     // ... consume them and return a <CDO-token>.
@@ -519,3 +513,3 @@ type = TYPE.CDO;
             // digit
-            case INPUT_STREAM_CODE_TYPE.Digit:
+            case charCodeCategory.Digit:
                 // Reconsume the current input code point, consume a numeric token, and return it.
@@ -526,3 +520,3 @@ consumeNumericToken();
             // name-start code point
-            case INPUT_STREAM_CODE_TYPE.NameStart:
+            case charCodeCategory.NameStart:
                 // Reconsume the current input code point, consume an ident-like token, and return it.
@@ -533,3 +527,3 @@ consumeIdentLikeToken();
             // EOF
-            case INPUT_STREAM_CODE_TYPE.Eof:
+            case charCodeCategory.Eof:
                 // Return an <EOF-token>.
@@ -577,3 +571,2 @@ break;
                 break;
-
         }
@@ -585,3 +578,3 @@
     // finalize buffers
-    offsetAndType[tokenCount] = offset;
+    offsetAndType[tokenCount] = (TYPE.EOF << TYPE_SHIFT) | offset; // <EOF-token>
     balance[tokenCount] = sourceLength;
@@ -607,6 +600,2 @@ balance[sourceLength] = sourceLength; // prevents false positive balance match with any token
 
-//
-// tokenizer
-//
-
 // extend tokenizer with constants
@@ -618,2 +607,5 @@ Object.keys(constants).forEach(function(key) {
 // extend tokenizer with static methods from utils
+Object.keys(charCodeDefinitions).forEach(function(key) {
+    tokenize[key] = charCodeDefinitions[key];
+});
 Object.keys(utils).forEach(function(key) {
@@ -620,0 +612,0 @@ tokenize[key] = utils[key];

lib/tokenizer/utils.js

@@ -5,26 +5,6 @@ var charCodeDef = require('./char-code-definitions');
 var isUppercaseLetter = charCodeDef.isUppercaseLetter;
-var isLowercaseLetter = charCodeDef.isLowercaseLetter;
-var isLetter = charCodeDef.isLetter;
-var isNonAscii = charCodeDef.isNonAscii;
-var isNameStart = charCodeDef.isNameStart;
 var isName = charCodeDef.isName;
-var isNonPrintable = charCodeDef.isNonPrintable;
-var isNewline = charCodeDef.isNewline;
 var isWhiteSpace = charCodeDef.isWhiteSpace;
 var isValidEscape = charCodeDef.isValidEscape;
-var isIdentifierStart = charCodeDef.isIdentifierStart;
-var isNumberStart = charCodeDef.isNumberStart;
 
-// detect BOM (https://en.wikipedia.org/wiki/Byte_order_mark)
-function firstCharOffset(source) {
-    if (source.length > 0) {
-        if (source.charCodeAt(0) === 0xFEFF ||  // UTF-16BE
-            source.charCodeAt(0) === 0xFFFE) {  // UTF-16LE
-            return 1;
-        }
-    }
-
-    return 0;
-}
-
 function getCharCode(source, offset) {
@@ -253,19 +233,2 @@ return offset < source.length ? source.charCodeAt(offset) : 0;
 module.exports = {
-    firstCharOffset: firstCharOffset,
-
-    isDigit: isDigit,
-    isHexDigit: isHexDigit,
-    isUppercaseLetter: isUppercaseLetter,
-    isLowercaseLetter: isLowercaseLetter,
-    isLetter: isLetter,
-    isNonAscii: isNonAscii,
-    isNameStart: isNameStart,
-    isName: isName,
-    isNonPrintable: isNonPrintable,
-    isNewline: isNewline,
-    isWhiteSpace: isWhiteSpace,
-    isValidEscape: isValidEscape,
-    isIdentifierStart: isIdentifierStart,
-    isNumberStart: isNumberStart,
-
     consumeEscaped: consumeEscaped,
@@ -272,0 +235,0 @@ consumeName: consumeName,

package.json

 {
   "name": "css-tree",
-  "version": "1.0.0-alpha.33",
+  "version": "1.0.0-alpha.34",
   "description": "CSSTree is a tool set to work with CSS, including fast detailed parser (string->AST), walker (AST traversal), generator (AST->string) and lexer (validation and matching) based on knowledge of spec and browser implementations",
@@ -5,0 +5,0 @@ "keywords": [

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