90 lines
2.1 KiB
JavaScript
90 lines
2.1 KiB
JavaScript
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// Skip text characters for text token, place those to pending buffer
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// and increment current pos
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'use strict';
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// Rule to skip pure text
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// '{}$%@~+=:' reserved for extentions
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// !, ", #, $, %, &, ', (, ), *, +, ,, -, ., /, :, ;, <, =, >, ?, @, [, \, ], ^, _, `, {, |, }, or ~
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// !!!! Don't confuse with "Markdown ASCII Punctuation" chars
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// http://spec.commonmark.org/0.15/#ascii-punctuation-character
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function isTerminatorChar(ch) {
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switch (ch) {
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case 0x0A/* \n */:
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case 0x21/* ! */:
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case 0x23/* # */:
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case 0x24/* $ */:
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case 0x25/* % */:
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case 0x26/* & */:
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case 0x2A/* * */:
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case 0x2B/* + */:
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case 0x2D/* - */:
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case 0x3A/* : */:
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case 0x3C/* < */:
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case 0x3D/* = */:
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case 0x3E/* > */:
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case 0x40/* @ */:
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case 0x5B/* [ */:
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case 0x5C/* \ */:
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case 0x5D/* ] */:
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case 0x5E/* ^ */:
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case 0x5F/* _ */:
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case 0x60/* ` */:
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case 0x7B/* { */:
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case 0x7D/* } */:
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case 0x7E/* ~ */:
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return true;
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default:
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return false;
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}
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}
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module.exports = function text(state, silent) {
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var pos = state.pos;
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while (pos < state.posMax && !isTerminatorChar(state.src.charCodeAt(pos))) {
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pos++;
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}
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if (pos === state.pos) { return false; }
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if (!silent) { state.pending += state.src.slice(state.pos, pos); }
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state.pos = pos;
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return true;
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};
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// Alternative implementation, for memory.
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//
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// It costs 10% of performance, but allows extend terminators list, if place it
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// to `ParcerInline` property. Probably, will switch to it sometime, such
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// flexibility required.
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/*
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var TERMINATOR_RE = /[\n!#$%&*+\-:<=>@[\\\]^_`{}~]/;
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module.exports = function text(state, silent) {
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var pos = state.pos,
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idx = state.src.slice(pos).search(TERMINATOR_RE);
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// first char is terminator -> empty text
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if (idx === 0) { return false; }
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// no terminator -> text till end of string
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if (idx < 0) {
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if (!silent) { state.pending += state.src.slice(pos); }
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state.pos = state.src.length;
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return true;
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}
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if (!silent) { state.pending += state.src.slice(pos, pos + idx); }
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state.pos += idx;
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return true;
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};*/
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