84 lines
2.5 KiB
JavaScript
84 lines
2.5 KiB
JavaScript
/*
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Compiles Mithril templates
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Requires sweet.js (https://github.com/mozilla/sweet.js)
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Installation: npm install -g sweet.js
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Usage: sjs --module /template-compiler.sjs --output <output-filename>.js <input-filename>.js
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*/
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macro m_impl {
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case { _ ($selector, $dynAttrs ..., $children ...) } => {
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var selectorSyntax = #{$selector};
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var selector = unwrapSyntax(selectorSyntax);
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var dynAttrsSyntax = #{$dynAttrs ...};
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try {
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var dynAttrs = unwrapSyntax(dynAttrsSyntax);
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var parser = /(?:(^|#|\.)([^#\.\[\]]+))|(\[.+?\])/g;
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var attrParser = /\[(.+?)=("|'|)(.+?)\2\]/;
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var _match = null;
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var classes = [];
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var cell = {tag: "div", attrs: {}, children: []};
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while (_match = parser.exec(selector)) {
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if (_match[1] == "") cell.tag = _match[2];
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else if (_match[1] == "#") cell.attrs.id = _match[2];
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else if (_match[1] == ".") classes.push(_match[2]);
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else if (_match[3][0] == "[") {
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var pair = attrParser.exec(_match[3]);
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cell.attrs[pair[1]] = pair[3];
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}
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}
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if (classes.length > 0) cell.attrs["class"] = classes.join(" ");
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var tag = makeValue(cell.tag, #{here});
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var attrsBody = Object.keys(cell.attrs).reduce(function(memo, attrName) {
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return memo.concat([
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makeValue(attrName, #{here}),
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makePunc(":", #{here}),
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makeValue(cell.attrs[attrName], #{here}),
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makePunc(",", #{here})
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]);
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}, []).concat(dynAttrs.inner);
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var attrs = [makeDelim("{}", attrsBody, #{here})];
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letstx $tag = [tag], $attrs = attrs;
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return #{ ({tag: $tag, attrs: $attrs , children: $children ...}) };
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}
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catch (e) {
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return #{ m_impl($tag, {}, [$dynAttrs ..., $children ...]) }
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}
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}
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case { _ ($selector, $partial ...) } => {
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var partialSyntax = #{$partial ...};
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try {
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var partial = unwrapSyntax(partialSyntax);
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var isTag = partial.inner && partial.inner.length > 2 && (partial.inner[0].token.value == "tag" && partial.inner[1].token.value == ":")
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return !isTag ? #{m_impl($selector, $partial ..., [])} : #{m_impl($selector, {}, $partial ...)};
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}
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catch (e) {
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return #{m_impl($selector, {}, $partial ...)}
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}
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}
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case { _ ($selector) } => {
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return #{m_impl($selector, {}, [])};
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}
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}
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let m = macro {
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case { _ ($selector, $dynAttrs ..., $children ...) } => {
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return #{m_impl($selector, $dynAttrs ..., $children ...)}
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}
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case { _ ($selector, $partial ...) } => {
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return #{m_impl($selector, $partial ...)}
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}
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case { _ ($selector) } => {
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return #{m_impl($selector, {}, [])};
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}
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case { _ } => {
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return #{m};
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}
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}
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export m;
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