44 lines
1.2 KiB
JavaScript
44 lines
1.2 KiB
JavaScript
// Literal nodes are for plain strings in the regular expression. They are
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// rendered as labels with the value of the literal quoted.
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import _ from 'lodash';
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export default {
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type: 'literal',
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// Renders the literal into the currently set container.
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_render() {
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return this.renderLabel(['\u201c', this.literal, '\u201d'])
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.then(label => {
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var spans = label.selectAll('tspan');
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// The quote marks get some styling to lighten their color so they are
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// distinct from the actual literal value.
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spans[0].addClass('quote');
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spans[2].addClass('quote');
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label.select('rect').attr({
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rx: 3,
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ry: 3
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});
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return label;
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});
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},
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// Merges this literal with another. Literals come back as single characters
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// during parsing, and must be post-processed into multi-character literals
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// for rendering. This processing is done in [Match](./match.html).
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merge(other) {
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this.literal += other.literal;
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},
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setup() {
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// Value of the literal.
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this.literal = this.properties.literal.textValue;
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// Ordinal value of the literal for use in
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// [CharsetRange](./charset_range.html).
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this.ordinal = this.literal.charCodeAt(0);
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}
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};
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