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mchem.js
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mchem.js
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/*************************************************************
*
* MathJax/extensions/TeX/mhchem.js
*
* Implements the \ce command for handling chemical formulas
* from the mhchem LaTeX package.
*
* ---------------------------------------------------------------------
*
* Copyright (c) 2011-2015 The MathJax Consortium
* Copyright (c) 2015-2016 Martin Hensel
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//
// Core parser for mhchem syntax (recursive)
//
var mhchemParser = {};
//
// Parses mchem \ce syntax
//
// Call like
// go("H2O");
//
// Looks through mhchemParser.transitions, to execute a matching action
// (recursive)
//
mhchemParser.go = function(input, stateMachine) {
if (!input) { return input; }
if (stateMachine === undefined) { stateMachine = 'ce'; }
var state = '0';
//
// String buffers for parsing:
//
// buffer.a == amount
// buffer.o == element
// buffer.b == left-side superscript
// buffer.p == left-side subscript
// buffer.q == right-side subscript
// buffer.d == right-side superscript
//
// buffer.r == arrow
// buffer.rdt == arrow, script above, type
// buffer.rd == arrow, script above, content
// buffer.rqt == arrow, script below, type
// buffer.rq == arrow, script below, content
//
// buffer.text
// buffer.rm
// etc.
//
// buffer.parenthesisLevel == int, starting at 0
// buffer.sb == bool, space before
// buffer.beginsWithBond == bool
//
// These letters are also used as state names.
//
// Other states:
// 0 == begin of main part (arrow/operator unlikely)
// 1 == next entity
// 2 == next entity (arrow/operator unlikely)
// 3 == next atom
// c == macro
//
var buffer = {};
buffer['parenthesisLevel'] = 0;
input = input.replace(/[\u2212\u2013\u2014\u2010]/g, "-");
var lastInput, watchdog;
var output = [];
while (true) {
if (lastInput !== input) {
watchdog = 10;
lastInput = input;
} else {
watchdog--;
}
//
// Look for matching string in transition table
//
var machine = mhchemParser.stateMachines[stateMachine];
var iTmax = machine.transitions.length;
iterateTransitions:
for (var iT=0; iT<iTmax; iT++) {
var t = machine.transitions[iT];
var matches = mhchemParser.matchh(t.matchh, input);
if (matches) {
var tasks = t.actions[state] || t.actions['*'] || null;
if (tasks) {
//
// Execute action
//
var actions = mhchemParser.concatNotUndefined([], tasks.action);
var iAmax = actions.length;
for (var iA=0; iA<iAmax; iA++) {
var a = actions[iA];
var o;
var option = undefined;
if (a.type) {
option = a.option;
a = a.type;
}
if (typeof a === "string") {
if (machine.actions[a]) {
o = machine.actions[a](buffer, matches.matchh, option);
} else if (mhchemParser.actions[a]) {
o = mhchemParser.actions[a](buffer, matches.matchh, option);
} else {
throw ["MhchemBugA", "mhchem bug A. Please report. (" + a + ")"]; // Trying to use non-existing action
}
} else if (typeof a === "function") {
o = a(buffer, matches.matchh);
}
output = mhchemParser.concatNotUndefined(output, o);
}
//
// Set next state,
// Shorten input,
// Continue with next character
// (= apply only one transition per position)
//
state = tasks.nextState || state;
if (input.length > 0) {
if (!tasks.revisit) {
input = matches.remainder;
}
if (!tasks.toContinue) {
break iterateTransitions;
}
} else {
return output;
}
}
}
}
//
// Prevent infinite loop
//
if (watchdog <= 0) {
throw ["MhchemBugU", "mhchem bug U. Please report."]; // Unexpected character
}
}
};
mhchemParser.concatNotUndefined = function(a, b) {
if (!b) { return a; }
if (!a) { return [].concat(b); }
return a.concat(b);
};
//
// Matching patterns
// either regexps or function that return null or {match:"a", remainder:"bc"}
//
mhchemParser.patterns = {
// property names must not look like integers ("2") for correct property traversal order, later on
'empty': /^$/,
'else': /^./,
'else2': /^./,
'space': /^\s/,
'space A': /^\s(?=[A-Z\\$])/,
'a-z': /^[a-z]/,
'x': /^x/,
'x$': /^x$/,
'i$': /^i$/,
'letters': /^(?:[a-zA-Z\u03B1-\u03C9\u0391-\u03A9?@]|(?:\\(?:alpha|beta|gamma|delta|epsilon|zeta|eta|theta|iota|kappa|lambda|mu|nu|xi|omicron|pi|rho|sigma|tau|upsilon|phi|chi|psi|omega|Gamma|Delta|Theta|Lambda|Xi|Pi|Sigma|Upsilon|Phi|Psi|Omega)(?:\s+|\{\}|(?![a-zA-Z]))))+/,
'\\greek': /^\\(?:alpha|beta|gamma|delta|epsilon|zeta|eta|theta|iota|kappa|lambda|mu|nu|xi|omicron|pi|rho|sigma|tau|upsilon|phi|chi|psi|omega|Gamma|Delta|Theta|Lambda|Xi|Pi|Sigma|Upsilon|Phi|Psi|Omega)(?:\s+|\{\}|(?![a-zA-Z]))/,
'one lowercase latin letter $': /^(?:([a-z])(?:$|[^a-zA-Z]))$/,
'$one lowercase latin letter$ $': /^\$(?:([a-z])(?:$|[^a-zA-Z]))\$$/,
'one lowercase greek letter $': /^(?:\$?[\u03B1-\u03C9]\$?|\$?\\(?:alpha|beta|gamma|delta|epsilon|zeta|eta|theta|iota|kappa|lambda|mu|nu|xi|omicron|pi|rho|sigma|tau|upsilon|phi|chi|psi|omega)\s*\$?)(?:\s+|\{\}|(?![a-zA-Z]))$/,
'digits': /^[0-9]+/,
'-9.,9': /^[+\-]?(?:[0-9]+(?:[,.][0-9]+)?|[0-9]*(?:\.[0-9]+))/,
'-9.,9 no missing 0': /^[+\-]?[0-9]+(?:[.,][0-9]+)?/,
'(-)(9.,9)(e)(99)': function (input) {
var m = input.match(/^([+\-]?)([0-9]+(?:[,.][0-9]+)?|[0-9]*(?:\.[0-9]+)?)(?:([eE])([+\-]?[0-9]+))?\s*/);
if (m && m[0]) {
return { matchh: m.splice(1), remainder: input.substr(m[0].length) };
}
return null;
},
'state of aggregation $': function (input) { // or crystal system
var a = this['_findObserveGroups'](input, "", /^\([a-z]{1,3}(?=[\),])/, ")", "");
if (a && a.remainder.match(/^($|[\s,;\)\]\}])/)) return a;
var m = input.match(/^(?:\(\$(?:\\ca\s+)?[amothc]\$\))/); // crystal system
if (m) {
return { matchh: m[0], remainder: input.substr(m[0].length) };
}
return null;
},
'\{[(': /^(?:\\\{|\[|\()/,
')]\}': /^(?:\)|\]|\\\})/,
', ': /^[,;]\s*/,
',': /^[,;]/,
'.': /^[.]/,
'. ': /^([.\u22C5\u00B7\u2022])\s*/,
'...': /^\.\.\.(?=$|[^.])/,
'* ': /^([*])\s*/,
'^{(...)}': function (input) { return this['_findObserveGroups'](input, "^{", "", "", "}"); },
'^($...$)': function (input) { return this['_findObserveGroups'](input, "^", "$", "$", ""); },
'^a': /^\^([0-9]+|[^\\_])/,
'^\\x{}{}': function (input) { return this['_findObserveGroups'](input, "^", /^\\[a-zA-Z]+\{/, "}", "", "", "{", "}", "", true); },
'^\\x{}': function (input) { return this['_findObserveGroups'](input, "^", /^\\[a-zA-Z]+\{/, "}", ""); },
'^\\x': /^\^(\\[a-zA-Z]+)\s*/,
'^(-1)': /^\^(-\d)/,
'\'': /^'/,
'_{(...)}': function (input) { return this['_findObserveGroups'](input, "_{", "", "", "}"); },
'_($...$)': function (input) { return this['_findObserveGroups'](input, "_", "$", "$", ""); },
'_9': /^_([+\-]?[0-9]+|[^\\])/,
'_\\x{}{}': function (input) { return this['_findObserveGroups'](input, "_", /^\\[a-zA-Z]+\{/, "}", "", "", "{", "}", "", true); },
'_\\x{}': function (input) { return this['_findObserveGroups'](input, "_", /^\\[a-zA-Z]+\{/, "}", ""); },
'_\\x': /^_(\\[a-zA-Z]+)\s*/,
'^_': /^(?:\^(?=_)|\_(?=\^)|[\^_]$)/,
'{}': /^\{\}/,
'{...}': function (input) { return this['_findObserveGroups'](input, "", "{", "}", ""); },
'{(...)}': function (input) { return this['_findObserveGroups'](input, "{", "", "", "}"); },
'$...$': function (input) { return this['_findObserveGroups'](input, "", "$", "$", ""); },
'${(...)}$': function (input) { return this['_findObserveGroups'](input, "${", "", "", "}$"); },
'$(...)$': function (input) { return this['_findObserveGroups'](input, "$", "", "", "$"); },
'=<>': /^[=<>]/,
'#': /^[#\u2261]/,
'+': /^\+/,
'-$': /^-(?=[\s_},;\]/]|$|\([a-z]+\))/, // -space -, -; -] -/ -$ -state-of-aggregation
'-9': /^-(?=[0-9])/,
'- orbital overlap': /^-(?=(?:[spd]|sp)(?:$|[\s,;\)\]\}]))/,
'-': /^-/,
'operator': /^(?:[+]|(?:[\-=<>]|<<|>>|\\pm|\$\\pm\$|\\approx|\$\\approx\$)(?=\s+|$|-?[0-9]))/,
'arrowUpDown': /^(?:v|\(v\)|\^|\(\^\))(?=$|[\s,;\)\]\}])/,
'\\bond{(...)}': function (input) { return this['_findObserveGroups'](input, "\\bond{", "", "", "}"); },
'->': /^(?:<->|<-->|->|<-|<=>>|<<=>|<=>|[\u2192\u27F6\u21CC])/,
'CMT': /^[CMT](?=\[)/,
'[(...)]': function (input) { return this['_findObserveGroups'](input, "[", "", "", "]"); },
'&': /^(&)\s*/,
'\\\\': /^(\\\\)\s*/,
'\\,': /^(?:\\[,\ ;:])/, // \\x - but output no space before
'\\x{}{}': function (input) { return this['_findObserveGroups'](input, "", /^\\[a-zA-Z]+\{/, "}", "", "", "{", "}", "", true); },
'\\x{}': function (input) { return this['_findObserveGroups'](input, "", /^\\[a-zA-Z]+\{/, "}", ""); },
'\\ca': /^\\ca(?:\s+|(?![a-zA-Z]))/,
'\\x': /^(?:\\[a-zA-Z]+\s*|\\[_&{}%])/,
'orbital': /^(?:[0-9]{1,2}[spdfgh]|[0-9]{0,2}sp)(?=$|[^a-zA-Z])/, // only those with numbers in front, because the others will be formatted correctly anyway
'others': /^[\/~|]/,
'\\frac{(...)}': function (input) { return this['_findObserveGroups'](input, "\\frac{", "", "", "}", "{", "", "", "}"); },
'\\overset{(...)}': function (input) { return this['_findObserveGroups'](input, "\\overset{", "", "", "}", "{", "", "", "}"); },
'\\underset{(...)}': function (input) { return this['_findObserveGroups'](input, "\\underset{", "", "", "}", "{", "", "", "}"); },
'\\underbrace{(...)}': function (input) { return this['_findObserveGroups'](input, "\\underbrace{", "", "", "}_", "{", "", "", "}"); },
'\\color{(...)}0': function (input) { return this['_findObserveGroups'](input, "\\color{", "", "", "}"); },
'\\color{(...)}{(...)}1': function (input) { return this['_findObserveGroups'](input, "\\color{", "", "", "}", "{", "", "", "}"); },
'\\color(...){(...)}2': function (input) { return this['_findObserveGroups'](input, "\\color", "\\", "", /^(?=\{)/, "{", "", "", "}"); },
'\\ce{(...)}': function (input) { return this['_findObserveGroups'](input, "\\ce{", "", "", "}"); },
'oxidation$': /^(?:[+\-]?\s?[IVX]+|\\pm\s*0|\$\\pm\$\s*0)$/, // 0 could be oxidation or charge
'roman numeral': /^[IVX]+/,
'1/2$': /^[+\-]?[0-9]+\/[0-9]+$/,
'amount': function (input) {
var matchh;
var a = this['_findObserveGroups'](input, "", "$", "$", "");
if (a) { // e.g. $2n-1$, $-$
matchh = a.matchh.match(/^\$(?:\(?[+\-]?(?:[0-9]*[a-z]?[+\-])?[0-9]*[a-z](?:[+\-][0-9]*[a-z]?)?\)?|\+|-)\$$/);
if (matchh) {
return { matchh: matchh[0], remainder: input.substr(matchh[0].length) };
}
} else { // e.g. 2, 0.5, 1/2, -2, +, \pm0
matchh = input.match(/^(?:(?:(?:\([+\-]?[0-9]+\/[0-9]+\)|[+\-]?[0-9]+\/[0-9]+|[+\-]?[0-9]+[.,][0-9]+|[+\-]?\.[0-9]+|[+\-]?[0-9]+)(?:[a-z](?=\s*[A-Z]))?)|[+\-]?[a-z](?=\s*[A-Z])|\+(?!\s)|\\pm(?:\s+|(?![a-zA-Z])))/);
if (matchh) {
return { matchh: matchh[0], remainder: input.substr(matchh[0].length) };
}
}
return null;
},
'amount2': function (input) { return this['amount'](input); },
'(KV letters),': /^(?:[A-Z][a-z]{0,2}|i)(?=,)/,
'formula$': function (input) {
if (input.match(/^\([a-z]+\)$/)) return null; // state of aggregation = no formula
var matchh = input.match(/^(?:[a-z]|(?:[0-9\ \+\-\,\.\(\)]+[a-z])+[0-9\ \+\-\,\.\(\)]*|(?:[a-z][0-9\ \+\-\,\.\(\)]+)+[a-z]?)$/);
if (matchh) {
return { matchh: matchh[0], remainder: input.substr(matchh[0].length) };
}
return null;
},
'uprightEntities': /^(?:pH|pOH|pC|pK|iPr|iBu)(?=$|[^a-zA-Z])/,
'dissociationConstant1': /^(p)?K(?:_?(a|b|w))(?=$|[^a-zA-Z])/,
'dissociationConstant2': /^(p)?K(?:_{(a|b|w)})/,
'/': /^\s*(\/)\s*/,
'//': /^\s*(\/\/)\s*/,
'*': /^\s*\*\s*/,
'_findObserveGroups': function (input, begExcl, begIncl, endIncl, endExcl, beg2Excl, beg2Incl, end2Incl, end2Excl, combine) {
var matchh = this['__match'](input, begExcl);
if (matchh === null) return null;
input = input.substr(matchh.length);
matchh = this['__match'](input, begIncl);
if (matchh === null) return null;
var e = this['__findObserveGroups'](input, matchh.length, endIncl || endExcl);
if (e === null) return null;
var match1 = input.substring(0, (endIncl ? e.endMatchEnd : e.endMatchBegin));
if (!(beg2Excl || beg2Incl)) {
return {
matchh: match1,
remainder: input.substr(e.endMatchEnd)
};
} else {
var group2 = this['_findObserveGroups'](input.substr(e.endMatchEnd), beg2Excl, beg2Incl, end2Incl, end2Excl);
if (group2 === null) return null;
var matchRet = [match1, group2.matchh];
if (combine) { matchRet = matchRet.join(""); }
return {
matchh: matchRet,
remainder: group2.remainder
};
}
},
'__match': function (input, pattern) {
if (typeof pattern === "string") {
if (input.indexOf(pattern) !== 0) return null;
return pattern;
} else {
var matchh = input.match(pattern);
if (!matchh) return null;
return matchh[0];
}
},
'__findObserveGroups': function (input, i, endChars) {
var braces = 0;
while (i < input.length) {
var a = input.charAt(i);
var matchh = this['__match'](input.substr(i), endChars);
if (matchh !== null && braces === 0) {
return { endMatchBegin: i, endMatchEnd: i + matchh.length };
} else if (a === "{") {
braces++;
} else if (a === "}") {
if (braces === 0) {
throw ["ExtraCloseMissingOpen", "Extra close brace or missing open brace"];
} else {
braces--;
}
}
i++;
}
if (braces > 0) {
return null;
}
return null;
}
};
//
// Matching function
// e.g. matchh("a", input) will look for the regexp called "a" and see if it matches
// returns null or {matchh:"a", remainder:"bc"}
//
mhchemParser.matchh = function (m, input) {
var pattern = mhchemParser.patterns[m];
if (pattern === undefined) {
throw ["MhchemBugP", "mhchem bug P. Please report. (" + m + ")"]; // Trying to use non-existing pattern
} else if (typeof pattern === "function") {
return mhchemParser.patterns[m](input); // cannot use cached var pattern here, because some pattern functions need this===mhchemParser
} else { // RegExp
var matchh = input.match(pattern);
if (matchh) {
var mm;
if (matchh[2]) {
mm = [ matchh[1], matchh[2] ];
} else if (matchh[1]) {
mm = matchh[1];
} else {
mm = matchh[0];
}
return { matchh: mm, remainder: input.substr(matchh[0].length) };
}
return null;
}
};
//
// Generic state machine actions
//
mhchemParser.actions = {
'a=': function (buffer, m) { buffer.a = (buffer.a || "") + m; },
'b=': function (buffer, m) { buffer.b = (buffer.b || "") + m; },
'p=': function (buffer, m) { buffer.p = (buffer.p || "") + m; },
'o=': function (buffer, m) { buffer.o = (buffer.o || "") + m; },
'q=': function (buffer, m) { buffer.q = (buffer.q || "") + m; },
'd=': function (buffer, m) { buffer.d = (buffer.d || "") + m; },
'rm=': function (buffer, m) { buffer.rm = (buffer.rm || "") + m; },
'text=': function (buffer, m) { buffer.text = (buffer.text || "") + m; },
'insert': function (buffer, m, a) { return { type: a }; },
'insert+p1': function (buffer, m, a) { return { type: a, p1: m }; },
'insert+p1+p2': function (buffer, m, a) { return { type: a, p1: m[0], p2: m[1] }; },
'copy': function (buffer, m) { return m; },
'rm': function (buffer, m) { return { type: 'rm', p1: m }; },
'text': function (buffer, m) { return mhchemParser.go(m, 'text'); },
'{text}': function (buffer, m) {
var ret = [ "{" ];
ret = mhchemParser.concatNotUndefined(ret, mhchemParser.go(m, 'text'));
ret = mhchemParser.concatNotUndefined(ret, "}");
return ret;
},
'tex-math': function (buffer, m) { return mhchemParser.go(m, 'tex-math'); },
'tex-math tight': function (buffer, m) { return mhchemParser.go(m, 'tex-math tight'); },
'bond': function (buffer, m, k) { return { type: 'bond', kind: k || m }; },
'color0-output': function (buffer, m) { return { type: 'color0', color: m[0] }; },
'ce': function (buffer, m) { return mhchemParser.go(m); },
'1/2': function (buffer, m) {
var ret;
if (m.match(/^[+\-]/)) {
ret = [ m.substr(0, 1) ];
m = m.substr(1);
}
var n = m.match(/^([0-9]+)\/([0-9]+)$/);
ret = mhchemParser.concatNotUndefined(ret, { type: 'frac', p1: n[1], p2: n[2] } );
return ret;
},
'9,9': function (buffer, m) { return mhchemParser.go(m, '9,9'); }
};
//
// State machine definitions
//
mhchemParser.stateMachines = {};
//
// convert { 'a': { '*': { action: 'output' } } } to [ { matchh: 'a', actions: { '*': { action: 'output' } } } ]
// with expansion of 'a|b' to 'a' and 'b' (at 2 places)
//
mhchemParser.createTransitions = function (o) {
var a, b, s, i;
//
// 1. o ==> oo, expanding 'a|b'
//
var oo = {};
for (a in o) {
if (a.indexOf("|") !== -1) {
s = a.split("|");
for (i=0; i<s.length; i++) {
oo[s[i]] = o[a];
}
} else {
oo[a] = o[a];
}
}
//
// 2. oo ==> transition array
//
var transitions = [];
for (a in oo) {
var actions = {};
var ooa = oo[a];
for (b in ooa) {
//
// expanding action-state:'a|b' if needed
//
if (b.indexOf("|") !== -1) {
s = b.split("|");
for (i=0; i<s.length; i++) {
actions[s[i]] = ooa[b];
}
} else {
actions[b] = ooa[b];
}
}
transitions.push( { matchh: a, actions: actions } );
}
return transitions;
};
//
//
// \ce state machines
//
//
// Transitions and actions of main parser
//
mhchemParser.stateMachines['ce'] = {
transitions: mhchemParser.createTransitions({
'empty': {
'*': { action: 'output' } },
'else': {
'0|1|2': { action: 'beginsWithBond=false', revisit: true, toContinue: true } },
'CMT': {
'r': { action: 'rdt=', nextState: 'rt' },
'rd': { action: 'rqt=', nextState: 'rdt' } },
'arrowUpDown': {
'0|1|2|as': { action: [ 'sb=false', 'output', 'operator' ], nextState: '1' } },
'dissociationConstant1|dissociationConstant2': {
'0|1|2': { action: [ { type: 'output', option: 1 }, { type: 'insert+p1+p2', option: 'dissociationConstant' } ], nextState: '1' } },
'uprightEntities': {
'0|1|2': { action: [ 'o=', 'output' ], nextState: '1' } },
'orbital': {
'0|1|2|3': { action: 'o=', nextState: 'o' } },
'->': {
'0|1|2|3': { action: 'r=', nextState: 'r' },
'a|as': { action: [ 'output', 'r=' ], nextState: 'r' },
'*': { action: [ 'output', 'r=' ], nextState: 'r' } },
'+': {
'o': { action: 'd= kv', nextState: 'd' },
'd|D': { action: 'd=', nextState: 'd' },
'q': { action: 'd=', nextState: 'qd' },
'qd|qD': { action: 'd=', nextState: 'qd' },
'dq': { action: [ 'output', 'd=' ], nextState: 'd' },
'3': { action: [ 'sb=false', 'output', 'operator' ], nextState: '0' } },
'amount': {
'0|2': { action: 'a=', nextState: 'a' } },
'operator': {
'0|1|2|a|as': { action: [ 'sb=false', 'output', 'operator' ], nextState: '0' } },
'-$': {
'o|q': { action: [ 'charge or bond', 'output' ], nextState: 'qd' },
'd': { action: 'd=', nextState: 'd' },
'D': { action: [ 'output', { type: 'bond', option: "-" } ], nextState: '3' },
'q': { action: 'd=', nextState: 'qd' },
'qd': { action: 'd=', nextState: 'qd' },
'qD|dq': { action: [ 'output', { type: 'bond', option: "-" } ], nextState: '3' } },
'-9': {
'3|o': { action: [ 'output', { type: 'insert', option: 'hyphen' } ], nextState: '3' } },
'- orbital overlap': {
'o': { action: { type: '- after o', option: true }, nextState: '2' },
'd': { action: { type: '- after d', option: true }, nextState: '2' } },
'-': {
'0|1|2': { action: [ { type: 'output', option: 1 }, 'beginsWithBond=true', { type: 'bond', option: "-" } ], nextState: '3' },
'3': { action: { type: 'bond', option: "-" } },
'a': { action: [ 'output', { type: 'insert', option: 'hyphen' } ], nextState: '2' },
'as': { action: [ { type: 'output', option: 2 }, { type: 'bond', option: "-" } ], nextState: '3' },
'b': { action: 'b=' },
'o': { action: '- after o', nextState: '2' },
'q': { action: '- after o', nextState: '2' },
'd|qd|dq': { action: '- after d', nextState: '2' },
'D|qD|p': { action: [ 'output', { type: 'bond', option: "-" } ], nextState: '3' } },
'amount2': {
'1|3': { action: 'a=', nextState: 'a' } },
'letters': {
'0|1|2|3|a|as|b|p|bp|o': { action: 'o=', nextState: 'o' },
'q|dq': { action: ['output', 'o='], nextState: 'o' },
'd|D|qd|qD': { action: 'o after d', nextState: 'o' } },
'digits': {
'o': { action: 'q=', nextState: 'q' },
'd|D': { action: 'q=', nextState: 'dq' },
'q': { action: [ 'output', 'o=' ], nextState: 'o' },
'a': { action: 'o=', nextState: 'o' } },
'space A': {
'b|p|bp': {} },
'space': {
'a': { nextState: 'as' },
'0': { action: 'sb=false' },
'1|2': { action: 'sb=true' },
'r|rt|rd|rdt|rdq': { action: 'output', nextState: '0' },
'*': { action: [ 'output', 'sb=true' ], nextState: '1'} },
'&': {
'1|2': { action: [ 'output', 'copy' ] },
'*': { action: [ 'output', 'copy' ], nextState: '0' } },
'\\\\': {
'1|2': { action: [ 'output', 'copy', { type: 'insert', option: 'space' } ] }, // space, so that we don't get \\[
'*': { action: [ 'output', 'copy', { type: 'insert', option: 'space' } ], nextState: '0' } },
'[(...)]': {
'r|rt': { action: 'rd=', nextState: 'rd' },
'rd|rdt': { action: 'rq=', nextState: 'rdq' } },
'...': {
'o|d|D|dq|qd|qD': { action: [ 'output', { type: 'bond', option: "..." } ], nextState: '3' },
'*': { action: [ { type: 'output', option: 1 }, { type: 'insert', option: 'ellipsis' } ], nextState: '1' } },
'. |* ': {
'*': { action: [ 'output', { type: 'insert', option: 'addition compound' } ], nextState: '1' } },
'state of aggregation $': {
'*': { action: [ 'output', 'state of aggregation' ], nextState: '1' } },
'\{[(': {
'a|as|o': { action: [ 'o=', 'output', 'parenthesisLevel++' ], nextState: '2' },
'0|1|2|3': { action: [ 'o=', 'output', 'parenthesisLevel++' ], nextState: '2' },
'*': { action: [ 'output', 'o=', 'output', 'parenthesisLevel++' ], nextState: '2' } },
')]\}': {
'0|1|2|3|b|p|bp|o': { action: [ 'o=', 'parenthesisLevel--' ], nextState: 'o' },
'a|as|d|D|q|qd|qD|dq': { action: [ 'output', 'o=', 'parenthesisLevel--' ], nextState: 'o' } },
', ': {
'*': { action: [ 'output', 'comma' ], nextState: '0' } },
'^_': { // ^ and _ without a sensible argument
'*': { } },
'^{(...)}|^($...$)': {
'0|1|2|as': { action: 'b=', nextState: 'b' },
'p': { action: 'b=', nextState: 'bp' },
'3|o': { action: 'd= kv', nextState: 'D' },
'q': { action: 'd=', nextState: 'qD' },
'd|D|qd|qD|dq': { action: [ 'output', 'd=' ], nextState: 'D' } },
'^a|^\\x{}{}|^\\x{}|^\\x|\'': {
'0|1|2|as': { action: 'b=', nextState: 'b' },
'p': { action: 'b=', nextState: 'bp' },
'3|o': { action: 'd= kv', nextState: 'd' },
'q': { action: 'd=', nextState: 'qd' },
'd|qd|D|qD|': { action: 'd=' },
'dq': { action: [ 'output', 'd=' ], nextState: 'd' } },
'_{(...)}|_($...$)|_9|_\\x{}{}|_\\x{}|_\\x': {
'0|1|2|as': { action: 'p=', nextState: 'p' },
'b': { action: 'p=', nextState: 'bp' },
'3|o': { action: 'q=', nextState: 'q' },
'd|D': { action: 'q=', nextState: 'dq' },
'q|qd|qD|dq': { action: [ 'output', 'q=' ], nextState: 'q' } },
'=<>': {
'0|1|2|3|a|as|o|q|d|D|qd|qD|dq': { action: [ { type: 'output', option: 2 }, 'bond' ], nextState: '3' } },
'#': {
'0|1|2|3|a|as|o': { action: [ { type: 'output', option: 2 }, { type: 'bond', option: "#" } ], nextState: '3' } },
'{}': {
'*': { action: { type: 'output', option: 1 }, nextState: '1' } },
'{...}': {
'0|1|2|3|a|as|b|p|bp': { action: 'o=', nextState: 'o' },
'o|d|D|q|qd|qD|dq': { action: [ 'output', 'o=' ], nextState: 'o' } },
'$...$': {
'a': { action: 'a=' }, // 2$n$
'0|1|2|3|as|b|p|bp|o': { action: 'o=', nextState: 'o' }, // not 'amount'
'as|o': { action: 'o=' },
'q|d|D|qd|qD|dq': { action: [ 'output', 'o=' ], nextState: 'o' } },
'\\bond{(...)}': {
'*': { action: [ { type: 'output', option: 2 }, 'bond' ], nextState: "3" } },
'\\frac{(...)}': {
'*': { action: [ { type: 'output', option: 1 }, 'frac-output' ], nextState: '3' } },
'\\overset{(...)}': {
'*': { action: [ { type: 'output', option: 2 }, 'overset-output' ], nextState: '3' } },
'\\underset{(...)}': {
'*': { action: [ { type: 'output', option: 2 }, 'underset-output' ], nextState: '3' } },
'\\underbrace{(...)}': {
'*': { action: [ { type: 'output', option: 2 }, 'underbrace-output' ], nextState: '3' } },
'\\color{(...)}{(...)}1|\\color(...){(...)}2': {
'*': { action: [ { type: 'output', option: 2 }, 'color-output' ], nextState: '3' } },
'\\color{(...)}0': {
'*': { action: [ { type: 'output', option: 2 }, 'color0-output' ] } },
'\\ce{(...)}': {
'*': { action: [ { type: 'output', option: 2 }, 'ce' ], nextState: '3' } },
'\\,': {
'*': { action: [ { type: 'output', option: 1 }, 'copy' ], nextState: '1' } },
'\\ca': {
'*': { action: [ { type: 'output', option: 1 }, { type: 'insert', option: 'circa' } ], nextState: '3' } },
'\\x{}{}|\\x{}|\\x': {
'0|1|2|3|a|as|b|p|bp|o|c0': { action: [ 'o=', 'output' ], nextState: '3' },
'*': { action: ['output', 'o=', 'output' ], nextState: '3' } },
'others': {
'*': { action: [ { type: 'output', option: 1 }, 'copy' ], nextState: '3' } },
'else2': {
'a': { action: 'a to o', nextState: 'o', revisit: true },
'as': { action: [ { type: 'output' }, 'sb=true' ], nextState: '1', revisit: true },
'r|rt|rd|rdt|rdq': { action: [ 'output' ], nextState: '0', revisit: true },
'*': { action: [ 'output', 'copy' ], nextState: '3' } }
}),
actions: {
'o after d': function (buffer, m) {
var ret;
if (buffer.d.match(/^[0-9]+$/)) {
var tmp = buffer.d;
buffer.d = undefined;
ret = this['output'](buffer);
buffer.b = tmp;
} else {
ret = this['output'](buffer);
}
mhchemParser.actions['o='](buffer, m);
return ret;
},
'd= kv': function (buffer, m) {
buffer.d = m;
buffer['d-type'] = 'kv';
},
'charge or bond': function (buffer, m) {
if (buffer['beginsWithBond']) {
var ret = mhchemParser.concatNotUndefined(ret, this['output'](buffer));
ret = mhchemParser.concatNotUndefined(ret, mhchemParser.actions['bond'](buffer, m, "-"));
return ret;
} else {
buffer.d = m;
}
},
'- after o': function (buffer, m, isOrbitalOverlap) {
var hyphenFollows = isOrbitalOverlap || this['_hyphenFollows'](buffer, m);
var ret = mhchemParser.concatNotUndefined(null, this['output'](buffer, m));
if (hyphenFollows) {
ret = mhchemParser.concatNotUndefined(ret, { type: 'hyphen' });
} else {
ret = mhchemParser.concatNotUndefined(ret, mhchemParser.actions['bond'](buffer, m, "-"));
}
return ret;
},
'- after d': function (buffer, m, isOrbitalOverlap) {
var hyphenFollows = isOrbitalOverlap || this['_hyphenFollows'](buffer, m);
var ret;
if (hyphenFollows) {
ret = mhchemParser.concatNotUndefined(ret, this['output'](buffer, m));
ret = mhchemParser.concatNotUndefined(ret, { type: 'hyphen' });
} else {
var c1 = mhchemParser.matchh('digits', buffer.d || '');
if (c1 && c1.remainder==='') {
ret = mhchemParser.concatNotUndefined(null, mhchemParser.actions['d='](buffer, m));
ret = mhchemParser.concatNotUndefined(ret, this['output'](buffer));
} else {
ret = mhchemParser.concatNotUndefined(ret, this['output'](buffer, m));
ret = mhchemParser.concatNotUndefined(ret, mhchemParser.actions['bond'](buffer, m, "-"));
}
}
return ret;
},
'_hyphenFollows': function (buffer, m) {
var c1 = mhchemParser.matchh('orbital', buffer.o || '');
var c2 = mhchemParser.matchh('one lowercase greek letter $', buffer.o || '');
var c3 = mhchemParser.matchh('one lowercase latin letter $', buffer.o || '');
var c4 = mhchemParser.matchh('$one lowercase latin letter$ $', buffer.o || '');
var hyphenFollows = m==="-" && ( c1 && c1.remainder==='' || c2 || c3 || c4 );
if (hyphenFollows && !buffer.a && !buffer.b && !buffer.p && !buffer.d && !buffer.q && !c1 && c3) {
buffer.o = '$' + buffer.o + '$';
}
return hyphenFollows;
},
'a to o': function (buffer, m) {
buffer.o = buffer.a;
buffer.a = undefined;
},
'sb=true': function (buffer, m) { buffer.sb = true; },
'sb=false': function (buffer, m) { buffer.sb = false; },
'beginsWithBond=true': function (buffer, m) { buffer.beginsWithBond = true; },
'beginsWithBond=false': function (buffer, m) { buffer.beginsWithBond = false; },
'parenthesisLevel++': function (buffer, m) { buffer.parenthesisLevel++; },
'parenthesisLevel--': function (buffer, m) { buffer.parenthesisLevel--; },
'state of aggregation': function (buffer, m) {
m = mhchemParser.go(m, 'o');
return { type: 'state of aggregation', p1: m };
},
'comma': function (buffer, m) {
var a = m.replace(/\s*$/, '');
var withSpace = (a !== m);
if (withSpace && buffer['parenthesisLevel'] === 0) {
return { type: 'comma enumeration L', p1: a };
} else {
return { type: 'comma enumeration M', p1: a };
}
},
'output': function (buffer, m, entityFollows) {
// entityFollows:
// undefined = if we have nothing else to output, also ignore the just read space (buffer.sb)
// 1 = an entity follows, never omit the space if there was one just read before (can only apply to state 1)
// 2 = 1 + the entity can have an amount, so output a\, instead of converting it to o (can only apply to states a|as)
var ret;
if (!buffer.r) {
ret = [];
if (!buffer.a && !buffer.b && !buffer.p && !buffer.o && !buffer.q && !buffer.d && !entityFollows) {
ret = null;
} else {
if (buffer.sb) {
ret.push({ type: 'entitySkip' });
}
if (!buffer.o && !buffer.q && !buffer.d && !buffer.b && !buffer.p && entityFollows!==2) {
buffer.o = buffer.a;
buffer.a = undefined;
} else if (!buffer.o && !buffer.q && !buffer.d && (buffer.b || buffer.p)) {
buffer.o = buffer.a;
buffer.d = buffer.b;
buffer.q = buffer.p;
buffer.a = buffer.b = buffer.p = undefined;
} else {
if (buffer.o && buffer['d-type']==='kv' && mhchemParser.matchh('oxidation$', buffer.d || '')) {
buffer['d-type'] = 'oxidation';
} else if (buffer.o && buffer['d-type']==='kv' && !buffer.q) {
buffer['d-type'] = undefined;
}
}
buffer.a = mhchemParser.go(buffer.a, 'a');
buffer.b = mhchemParser.go(buffer.b, 'bd');
buffer.p = mhchemParser.go(buffer.p, 'pq');
buffer.o = mhchemParser.go(buffer.o, 'o');
if (buffer['d-type'] === 'oxidation') {
buffer.d = mhchemParser.go(buffer.d, 'd-oxidation');
} else {
buffer.d = mhchemParser.go(buffer.d, 'bd');
}
buffer.q = mhchemParser.go(buffer.q, 'pq');
ret.push({
type: 'chemfive',
a: buffer.a,
b: buffer.b,
p: buffer.p,
o: buffer.o,
q: buffer.q,
d: buffer.d,
'd-type': buffer['d-type']
});
}
} else { // r
if (buffer.rdt === 'M') {
buffer.rd = mhchemParser.go(buffer.rd, 'tex-math');
} else if (buffer.rdt === 'T') {
buffer.rd = [ { type: 'text', p1: buffer.rd } ];
} else {
buffer.rd = mhchemParser.go(buffer.rd);
}
if (buffer.rqt === 'M') {
buffer.rq = mhchemParser.go(buffer.rq, 'tex-math');
} else if (buffer.rqt === 'T') {
buffer.rq = [ { type: 'text', p1: buffer.rq } ];
} else {
buffer.rq = mhchemParser.go(buffer.rq);
}
ret = {
type: 'arrow',
r: buffer.r,
rd: buffer.rd,
rq: buffer.rq
};
}
for (var p in buffer) {
if (p !== 'parenthesisLevel' && p !== 'beginsWithBond') {
delete buffer[p];
}
}
return ret;
},
'frac-output': function (buffer, m) {
return { type: 'frac-ce', p1: mhchemParser.go(m[0]), p2: mhchemParser.go(m[1]) };
},
'overset-output': function (buffer, m) {
return { type: 'overset', p1: mhchemParser.go(m[0]), p2: mhchemParser.go(m[1]) };
},
'underset-output': function (buffer, m) {
return { type: 'underset', p1: mhchemParser.go(m[0]), p2: mhchemParser.go(m[1]) };
},
'underbrace-output': function (buffer, m) {
return { type: 'underbrace', p1: mhchemParser.go(m[0]), p2: mhchemParser.go(m[1]) };
},
'color-output': function (buffer, m) {
return { type: 'color', color1: m[0], color2: mhchemParser.go(m[1]) };
},
'r=': function (buffer, m) { buffer.r = (buffer.r || '') + m; },
'rdt=': function (buffer, m) { buffer.rdt = (buffer.rdt || '') + m; },
'rd=': function (buffer, m) { buffer.rd = (buffer.rd || '') + m; },
'rqt=': function (buffer, m) { buffer.rqt = (buffer.rqt || '') + m; },
'rq=': function (buffer, m) { buffer.rq = (buffer.rq || '') + m; },
'operator': function (buffer, m) { return { type: 'operator', kind: m }; }
}
};
//
// Transitions and actions of a parser
//
mhchemParser.stateMachines['a'] = {
transitions: mhchemParser.createTransitions({
'empty': {
'*': {} },
'1/2$': {
'0': { action: '1/2' } },
'else': {
'0': { nextState: '1', revisit: true } },
'$(...)$': {
'*': { action:'tex-math tight', nextState: '1' } },
',': {
'*': { action:{ type: 'insert', option: 'commaDecimal' } } },
'else2': {
'*': { action: 'copy' } }
}),
actions: {}
};
//
// Transitions and actions of o parser
//
mhchemParser.stateMachines['o'] = {
transitions: mhchemParser.createTransitions({
'empty': {
'*': {} },
'1/2$': {
'0': { action: '1/2' } },
'else': {
'0': { nextState: '1', revisit: true } },
'letters': {
'*': { action: 'rm' } },
'\\x{}{}|\\x{}|\\x': {
'*': { action: 'copy' } },
'${(...)}$|$(...)$': {
'*': { action: 'tex-math' } },
'{(...)}': {
'*': { action: '{text}' } },
'else2': {
'*': { action: 'copy' } }
}),
actions: {}
};
//
// Transitions and actions of text parser
//
mhchemParser.stateMachines['text'] = {
transitions: mhchemParser.createTransitions({
'empty': {
'*': { action: 'output' } },
'{...}': {
'*': { action: 'text=' } },
'${(...)}$|$(...)$': {
'*': { action: 'tex-math' } },
'\\greek': {
'*': { action: [ 'output', 'rm' ] } },
'\\,|\\x{}{}|\\x{}|\\x': {
'*': { action: [ 'output', 'copy' ] } },
'else': {
'*': { action: 'text=' } }
}),
actions: {
'output': function (buffer, m) {
if (buffer.text) {
var ret = { type: 'text', p1: buffer.text };
for (var p in buffer) { delete buffer[p]; }
return ret;
}
return null;
}
}
};
//
// Transitions and actions of pq parser
//
mhchemParser.stateMachines['pq'] = {
transitions: mhchemParser.createTransitions({
'empty': {
'*': {} },
'state of aggregation $': {
'*': { action: 'state of aggregation' } },
'i$': {
'0': { nextState: '!f', revisit: true } },
'(KV letters),': {
'0': { action: 'rm', nextState: '0' } },
'formula$': {
'0': { nextState: 'f', revisit: true } },
'1/2$': {
'0': { action: '1/2' } },
'else': {
'0': { nextState: '!f', revisit: true } },
'${(...)}$|$(...)$': {
'*': { action: 'tex-math' } },
'{(...)}': {
'*': { action: 'text' } },
'a-z': {
'f': { action: 'tex-math' } },
'letters': {
'*': { action: 'rm' } },
'-9.,9': {
'*': { action: '9,9' } },
',': {
'*': { action: { type: 'insert+p1', option: 'comma enumeration S' } } },
'\\color{(...)}{(...)}1|\\color(...){(...)}2': {
'*': { action: 'color-output' } },
'\\color{(...)}0': {
'*': { action: 'color0-output' } },
'\\ce{(...)}': {
'*': { action: 'ce' } },
'\\,|\\x{}{}|\\x{}|\\x': {
'*': { action: 'copy' } },
'else2': {
'*': { action: 'copy' } }
}),
actions: {
'state of aggregation': function (buffer, m) {
m = mhchemParser.go(m, 'o');
return { type: 'state of aggregation subscript', p1: m };
},
'color-output': function (buffer, m) {
return { type: 'color', color1: m[0], color2: mhchemParser.go(m[1], 'pq') };
}
}
};
//
// Transitions and actions of bd parser
//
mhchemParser.stateMachines['bd'] = {
transitions: mhchemParser.createTransitions({
'empty': {
'*': {} },
'x$': {
'0': { nextState: '!f', revisit: true } },
'formula$': {
'0': { nextState: 'f', revisit: true } },
'else': {
'0': { nextState: '!f', revisit: true } },
'-9.,9 no missing 0': {
'*': { action: '9,9' } },
'.': {
'*': { action: { type: 'insert', option: 'electron dot' } } },
'a-z': {
'f': { action: 'tex-math' } },
'x': {
'*': { action: { type: 'insert', option: 'KV x' } } },
'letters': {
'*': { action: 'rm' } },
'\'': {
'*': { action: { type: 'insert', option: 'prime' } } },
'${(...)}$|$(...)$': {
'*': { action: 'tex-math' } },
'{(...)}': {
'*': { action: 'text' } },
'\\color{(...)}{(...)}1|\\color(...){(...)}2': {
'*': { action: 'color-output' } },
'\\color{(...)}0': {
'*': { action: 'color0-output' } },
'\\ce{(...)}': {
'*': { action: 'ce' } },
'\\,|\\x{}{}|\\x{}|\\x': {
'*': { action: 'copy' } },
'else2': {
'*': { action: 'copy' } }
}),
actions: {