Refactor and expand data types.

[joseedil]

This is being done in the refactor-datatypes branch, but it breaks the API.

The rational is the following:

• Attributes.hs will hold datatypes for all SVG attributes and attributes groups.
• ContentTypes.hs will hold datatypes for all SVG content types. So far those are in CssTypes.hs.
• Elements.hs will contain the elements data types.

[joseedil]

Content types: Everything is implemented.
Checking against the standard is still required.

• <angle>
• <anything>
• <basic-shape>
• <clock-value>
• <color>
• <coordinate>
• <frequency>
• <funcIRI>
• <ICCColor>
• <integer>
• <IRI>
• <Length>
• <length-percentage> - This is commented so far in favor of <length> which includes a percentage format.
• <list-of-Ts>
• <name>
• <number> - This one breaks the parser and almost everything else. Earlier implementation confounded <number> and <length>.
• <number-optional-number>
• <opacity-value>
• <paint>
• <percentage>
• <time>
• <transform-list>
• <units> - This is not part of the standard but it is useful to define some attributes.
• <URL>

[joseedil]

Attibutes: this is a big list, here are just what is missing, many of them because of the content types above.

• begin
• by
• clip-path
• contentScriptType
• contentStyleType
• cursor
• d - Very relevant for paths!
• decelerate - Definition is missing in the SVG website.
• display
• dur
• end
• filter
• font-family
• font-variant
• from
• g1
• g2
• glyph-name
• gradientTransform
• hreflang - Definition is missing in the SVG website.
• id
• keyPoints
• keySplines
• keyTimes
• mask
• max
• media
• min
• offset - Definition is missing in the SVG website.
• path
• ping - Definition is missing in the SVG website.
• points
• referrerPolicy - Definition is missing in the SVG website.
• rel - Definition is missing in the SVG website.
• repeatDur
• requiredExtensions - Definition is missing in the SVG website.
• requiredFeatures
• speed - Definition is missing in the SVG website.
• stop-color
• style
• text-decoration
• to
• transform-origin - Definition is missing in the SVG website.
• u1
• u2
• unicode-range
• values
• xlink:actuate - Definition is missing in the SVG website.
• xlink:arcrole
• xlink:href
• xlink:role - Definition is missing in the SVG website.
• xml:base

[joseedil]

Those are the SVG elements. Everything is missing so far.

• <a>
• <animate>
• <animateMotion>
• <animateTransform>
• <circle>
• <clipPath>
• <color-profile>
• <defs>
• <desc>
• <discard>
• <ellipse>
• <feBlend>
• <feColorMatrix>
• <feComponentTransfer>
• <feComposite>
• <feConvolveMatrix>
• <feDiffuseLighting>
• <feDisplacementMap>
• <feDistantLight>
• <feDropShadow>
• <feFlood>
• <feFuncA>
• <feFuncB>
• <feFuncG>
• <feFuncR>
• <feGaussianBlur>
• <feImage>
• <feMerge>
• <feMergeNode>
• <feMorphology>
• <feOffset>
• <fePointLight>
• <feSpecularLighting>
• <feSpotLight>
• <feTile>
• <feTurbulence>
• <filter>
• <foreignObject>
• <g>
• <hatch>
• <hatchpath>
• <image>
• <line>
• <linearGradient>
• <marker>
• <mask>
• <mesh>
• <meshgradient>
• <meshpatch>
• <meshrow>
• <metadata>
• <mpath>
• <path>
• <pattern>
• <polygon>
• <polyline>
• <radialGradient>
• <rect>
• <script>
• <set>
• <solidcolor>
• <stop>
• <style>
• <svg>
• <switch>
• <symbol>
• <text>
• <textPath>
• <title>
• <tspan>
• <unknown>
• <use>
• <view\>

[lemmih]

How much has to be implemented before we can merge this into master?