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mhchemParser.ts
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mhchemParser.ts
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/*!
**************************************************************************
*
* mhchemParser.ts
* 4.2.2
*
* Parser for the \ce command and \pu command for MathJax and Co.
*
* mhchem's \ce is a tool for writing beautiful chemical equations easily.
* mhchem's \pu is a tool for writing physical units easily.
*
* -----------------------------------------------------------------------
*
* Copyright 2015-2023 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
* or in file LICENSE.txt
*
* 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.
*
* -----------------------------------------------------------------------
*
* https://github.com/mhchem/mhchemParser
*
**************************************************************************
*/
export class mhchemParser {
static toTex(input: string, type: "tex" | "ce" | "pu"): string {
return _mhchemTexify.go(_mhchemParser.go(input, type), type !== "tex");
}
}
//
// Coding Style
// - use '' for identifiers that can by minified/uglified
// - use "" for strings that need to stay untouched
//
// Helper funtion: _mhchemCreateTransitions
// convert { 'letter': { 'state': { action_: 'output' } } } to { 'state' => [ { pattern: 'letter', task: { action_: [{type_: 'output'}] } } ] }
// with expansion of 'a|b' to 'a' and 'b' (at 2 places)
//
function _mhchemCreateTransitions(o: TransitionsRaw): Transitions {
let pattern: PatternName, state: StateNameCombined;
//
// 1. Collect all states
//
let transitions: Transitions = {};
for (pattern in o) {
for (state in o[pattern]) {
let stateArray = state.split("|") as StateName[];
o[pattern][state].stateArray = stateArray;
for (let i=0; i<stateArray.length; i++) {
transitions[stateArray[i]] = [];
}
}
}
//
// 2. Fill states
//
for (pattern in o) {
for (state in o[pattern]) {
let stateArray = o[pattern as PatternName][state].stateArray || [];
for (let i=0; i<stateArray.length; i++) {
//
// 2a. Normalize actions into array: 'text=' ==> [{type_:'text='}]
// (Note to myself: Resolving the function here would be problematic. It would need .bind (for *this*) and currying (for *option*).)
//
const p = o[pattern as PatternName][state];
p.action_ = [].concat(p.action_);
for (let k=0; k<p.action_.length; k++) {
if (typeof p.action_[k] === "string") {
p.action_[k] = { type_: p.action_[k] } as ActionNameWithParameter<ActionNameUsingMString>;
}
}
//
// 2.b Multi-insert
//
const patternArray = pattern.split("|") as PatternName[];
for (let j=0; j<patternArray.length; j++) {
if (stateArray[i] === '*') { // insert into all
let t: StateName;
for (t in transitions) {
transitions[t].push({ pattern: patternArray[j], task: p } as Transition);
}
} else {
transitions[stateArray[i]].push({ pattern: patternArray[j], task: p } as Transition);
}
}
}
}
}
return transitions;
};
const _mhchemParser: MhchemParser = {
//
// Parses mhchem \ce syntax
//
// Call like
// go("H2O");
//
go: function (input, stateMachine) {
if (!input) { return []; }
if (stateMachine === undefined) { stateMachine = 'ce'; }
let state: StateName = '0';
let buffer: Buffer = {};
buffer['parenthesisLevel'] = 0;
input = input.replace(/\n/g, " ");
input = input.replace(/[\u2212\u2013\u2014\u2010]/g, "-");
input = input.replace(/[\u2026]/g, "...");
//
// Looks through _mhchemParser.transitions, to execute a matching action
// (recursive)
//
let lastInput;
let watchdog = 10;
let output: Parsed[] = [];
while (true) {
if (lastInput !== input) {
watchdog = 10;
lastInput = input;
} else {
watchdog--;
}
//
// Find actions in transition table
//
let machine = _mhchemParser.stateMachines[stateMachine];
let t: Transition[] = machine.transitions[state] || machine.transitions['*'];
iterateTransitions:
for (let i=0; i<t.length; i++) {
let matches = _mhchemParser.patterns.match_(t[i].pattern, input);
if (matches) {
//
// Execute actions
//
const task = t[i].task;
for (let iA=0; iA<task.action_.length; iA++) {
let o: undefined | Parsed | Parsed[];
//
// Find and execute action
//
if (machine.actions[task.action_[iA].type_]) {
o = machine.actions[task.action_[iA].type_](buffer, matches.match_ as any, task.action_[iA].option);
} else if (_mhchemParser.actions[task.action_[iA].type_]) {
o = _mhchemParser.actions[task.action_[iA].type_](buffer, matches.match_ as any, task.action_[iA].option);
} else {
throw ["MhchemBugA", "mhchem bug A. Please report. (" + task.action_[iA].type_ + ")"]; // Trying to use non-existing action
}
//
// Add output
//
_mhchemParser.concatArray(output, o);
}
//
// Set next state,
// Shorten input,
// Continue with next character
// (= apply only one transition per position)
//
state = task.nextState || state;
if (input.length > 0) {
if (!task.revisit) {
input = matches.remainder;
}
if (!task.toContinue) {
break iterateTransitions;
}
} else {
return output;
}
}
}
//
// Prevent infinite loop
//
if (watchdog <= 0) {
throw ["MhchemBugU", "mhchem bug U. Please report."]; // Unexpected character
}
}
},
concatArray: function (a, b) {
if (b) {
if (Array.isArray(b)) {
for (let iB=0; iB<b.length; iB++) { // a.push(...b); is slower
a.push(b[iB]);
}
} else {
a.push(b);
}
}
},
patterns: {
//
// Matching patterns
// either regexps or function that return null or {match_:"a", remainder:"bc"}
//
patterns: {
// property names must not look like integers ("2") for correct property traversal order, later on
'empty': /^$/,
'else': /^./,
'else2': /^./,
'space': /^\s/,
'space A': /^\s(?=[A-Z\\$])/,
'space$': /^\s$/,
'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) {
const match = input.match(/^(\+\-|\+\/\-|\+|\-|\\pm\s?)?([0-9]+(?:[,.][0-9]+)?|[0-9]*(?:\.[0-9]+))?(\((?:[0-9]+(?:[,.][0-9]+)?|[0-9]*(?:\.[0-9]+))\))?(?:(?:([eE])|\s*(\*|x|\\times|\u00D7)\s*10\^)([+\-]?[0-9]+|\{[+\-]?[0-9]+\}))?/);
if (match && match[0]) { // could also match ""
return { match_: match.slice(1), remainder: input.substring(match[0].length) };
}
return null;
},
'(-)(9)^(-9)': /^(\+\-|\+\/\-|\+|\-|\\pm\s?)?([0-9]+(?:[,.][0-9]+)?|[0-9]*(?:\.[0-9]+)?)\^([+\-]?[0-9]+|\{[+\-]?[0-9]+\})/,
'state of aggregation $': function (input) { // ... or crystal system
const a = _mhchemParser.patterns.findObserveGroups(input, "", /^\([a-z]{1,3}(?=[\),])/, ")", ""); // (aq), (aq,$\infty$), (aq, sat)
if (a && a.remainder.match(/^($|[\s,;\)\]\}])/)) { return a; } // AND end of 'phrase'
const match = input.match(/^(?:\((?:\\ca\s?)?\$[amothc]\$\))/); // OR crystal system ($o$) (\ca$c$)
if (match) {
return { match_: match[0], remainder: input.substring(match[0].length) };
}
return null;
} as PatternFunction<string>,
'_{(state of aggregation)}$': /^_\{(\([a-z]{1,3}\))\}/,
'{[(': /^(?:\\\{|\[|\()/,
')]}': /^(?:\)|\]|\\\})/,
', ': /^[,;]\s*/,
',': /^[,;]/,
'.': /^[.]/,
'. __* ': /^([.\u22C5\u00B7\u2022]|[*])\s*/,
'...': /^\.\.\.(?=$|[^.])/,
'^{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "^{", "", "", "}"); } as PatternFunction<string>,
'^($...$)': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "^", "$", "$", ""); } as PatternFunction<string>,
'^a': /^\^([0-9]+|[^\\_])/,
'^\\x{}{}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "^", /^\\[a-zA-Z]+\{/, "}", "", "", "{", "}", "", true); } as PatternFunction<string>,
'^\\x{}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "^", /^\\[a-zA-Z]+\{/, "}", ""); } as PatternFunction<string>,
'^\\x': /^\^(\\[a-zA-Z]+)\s*/,
'^(-1)': /^\^(-?\d+)/,
'\'': /^'/,
'_{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "_{", "", "", "}"); } as PatternFunction<string>,
'_($...$)': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "_", "$", "$", ""); } as PatternFunction<string>,
'_9': /^_([+\-]?[0-9]+|[^\\])/,
'_\\x{}{}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "_", /^\\[a-zA-Z]+\{/, "}", "", "", "{", "}", "", true); } as PatternFunction<string>,
'_\\x{}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "_", /^\\[a-zA-Z]+\{/, "}", ""); } as PatternFunction<string>,
'_\\x': /^_(\\[a-zA-Z]+)\s*/,
'^_': /^(?:\^(?=_)|\_(?=\^)|[\^_]$)/,
'{}^': /^\{\}(?=\^)/,
'{}': /^\{\}/,
'{...}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "", "{", "}", ""); } as PatternFunction<string>,
'{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "{", "", "", "}"); } as PatternFunction<string>,
'$...$': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "", "$", "$", ""); } as PatternFunction<string>,
'${(...)}$__$(...)$': function (input) {
return _mhchemParser.patterns.findObserveGroups(input, "${", "", "", "}$") || _mhchemParser.patterns.findObserveGroups(input, "$", "", "", "$");
} as PatternFunction<string>,
'=<>': /^[=<>]/,
'#': /^[#\u2261]/,
'+': /^\+/,
'-$': /^-(?=[\s_},;\]/]|$|\([a-z]+\))/, // -space -, -; -] -/ -$ -state-of-aggregation
'-9': /^-(?=[0-9])/,
'- orbital overlap': /^-(?=(?:[spd]|sp)(?:$|[\s,;\)\]\}]))/,
'-': /^-/,
'pm-operator': /^(?:\\pm|\$\\pm\$|\+-|\+\/-)/,
'operator': /^(?:\+|(?:[\-=<>]|<<|>>|\\approx|\$\\approx\$)(?=\s|$|-?[0-9]))/,
'arrowUpDown': /^(?:v|\(v\)|\^|\(\^\))(?=$|[\s,;\)\]\}])/,
'\\bond{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "\\bond{", "", "", "}"); } as PatternFunction<string>,
'->': /^(?:<->|<-->|->|<-|<=>>|<<=>|<=>|[\u2192\u27F6\u21CC])/,
'CMT': /^[CMT](?=\[)/,
'[(...)]': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "[", "", "", "]"); } as PatternFunction<string>,
'1st-level escape': /^(&|\\\\|\\hline)\s*/,
'\\,': /^(?:\\[,\ ;:])/, // \\x - but output no space before
'\\x{}{}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "", /^\\[a-zA-Z]+\{/, "}", "", "", "{", "}", "", true); } as PatternFunction<string>,
'\\x{}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "", /^\\[a-zA-Z]+\{/, "}", ""); } as PatternFunction<string>,
'\\ca': /^\\ca(?:\s+|(?![a-zA-Z]))/,
'\\x': /^(?:\\[a-zA-Z]+\s*|\\[_&{}%])/,
'orbital': /^(?:[0-9]{1,2}[spdfgh]|[0-9]{0,2}sp)(?=$|[^a-zA-Z])/, // only those with numbers in front, because the others will be formatted correctly anyway
'others': /^[\/~|]/,
'\\frac{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "\\frac{", "", "", "}", "{", "", "", "}"); } as PatternFunction<string[]>,
'\\overset{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "\\overset{", "", "", "}", "{", "", "", "}"); } as PatternFunction<string[]>,
'\\underset{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "\\underset{", "", "", "}", "{", "", "", "}"); } as PatternFunction<string[]>,
'\\underbrace{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "\\underbrace{", "", "", "}_", "{", "", "", "}"); } as PatternFunction<string[]>,
'\\color{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "\\color{", "", "", "}"); } as PatternFunction<string>,
'\\color{(...)}{(...)}': function (input) {
return _mhchemParser.patterns.findObserveGroups(input, "\\color{", "", "", "}", "{", "", "", "}") ||
_mhchemParser.patterns.findObserveGroups(input, "\\color", "\\", "", /^(?=\{)/, "{", "", "", "}");
} as PatternFunction<string[]>,
'\\ce{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "\\ce{", "", "", "}"); } as PatternFunction<string>,
'\\pu{(...)}': function (input) { return _mhchemParser.patterns.findObserveGroups(input, "\\pu{", "", "", "}"); } as PatternFunction<string>,
'oxidation$': /^(?:[+-][IVX]+|(?:\\pm|\$\\pm\$|\+-|\+\/-)\s*0)$/, // -IV to +IX, +-0 // "0" could be oxidation or charge - but renders the same
'd-oxidation$': /^(?:[+-]?[IVX]+|(?:\\pm|\$\\pm\$|\+-|\+\/-)\s*0)$/,
'1/2$': /^[+\-]?(?:[0-9]+|\$[a-z]\$|[a-z])\/[0-9]+(?:\$[a-z]\$|[a-z])?$/,
'amount': function (input) {
let match;
// e.g. 2, 0.5, 1/2, -2, n/2, +; $a$ could be added later in parsing
match = input.match(/^(?:(?:(?:\([+\-]?[0-9]+\/[0-9]+\)|[+\-]?(?:[0-9]+|\$[a-z]\$|[a-z])\/[0-9]+|[+\-]?[0-9]+[.,][0-9]+|[+\-]?\.[0-9]+|[+\-]?[0-9]+)(?:[a-z](?=\s*[A-Z]))?)|[+\-]?[a-z](?=\s*[A-Z])|\+(?!\s))/);
if (match) {
return { match_: match[0], remainder: input.substring(match[0].length) };
}
const a = _mhchemParser.patterns.findObserveGroups(input, "", "$", "$", "") as MatchResult<string>;
if (a) { // e.g. $2n-1$, $-$
match = a.match_.match(/^\$(?:\(?[+\-]?(?:[0-9]*[a-z]?[+\-])?[0-9]*[a-z](?:[+\-][0-9]*[a-z]?)?\)?|\+|-)\$$/);
if (match) {
return { match_: match[0], remainder: input.substring(match[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
const match = input.match(/^(?:[a-z]|(?:[0-9\ \+\-\,\.\(\)]+[a-z])+[0-9\ \+\-\,\.\(\)]*|(?:[a-z][0-9\ \+\-\,\.\(\)]+)+[a-z]?)$/);
if (match) {
return { match_: match[0], remainder: input.substring(match[0].length) };
}
return null;
},
'uprightEntities': /^(?:pH|pOH|pC|pK|iPr|iBu)(?=$|[^a-zA-Z])/,
'/': /^\s*(\/)\s*/,
'//': /^\s*(\/\/)\s*/,
'*': /^\s*[*.]\s*/
},
findObserveGroups: function (input, begExcl, begIncl, endIncl, endExcl, beg2Excl, beg2Incl, end2Incl, end2Excl, combine) {
const _match = function (input: string, pattern: string | RegExp) : string | string[] | null {
if (typeof pattern === "string") {
if (input.indexOf(pattern) !== 0) { return null; }
return pattern;
} else {
const match = input.match(pattern);
if (!match) { return null; }
return match[0];
}
};
const _findObserveGroups = function (input: string, i: number, endChars: string | RegExp): {endMatchBegin: number, endMatchEnd: number} | null {
let braces = 0;
while (i < input.length) {
let a = input.charAt(i);
const match = _match(input.substring(i), endChars);
if (match !== null && braces === 0) {
return { endMatchBegin: i, endMatchEnd: i + match.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;
};
let match = _match(input, begExcl);
if (match === null) { return null; }
input = input.substring(match.length);
match = _match(input, begIncl);
if (match === null) { return null; }
const e = _findObserveGroups(input, match.length, endIncl || endExcl);
if (e === null) { return null; }
const match1 = input.substring(0, (endIncl ? e.endMatchEnd : e.endMatchBegin));
if (!(beg2Excl || beg2Incl)) {
return {
match_: match1,
remainder: input.substring(e.endMatchEnd)
};
} else {
const group2 = this.findObserveGroups(input.substring(e.endMatchEnd), beg2Excl, beg2Incl, end2Incl, end2Excl);
if (group2 === null) { return null; }
const matchRet: string[] = [match1, group2.match_];
return {
match_: (combine ? matchRet.join("") : matchRet),
remainder: group2.remainder
};
}
},
//
// Matching function
// e.g. match("a", input) will look for the regexp called "a" and see if it matches
// returns null or {match_:"a", remainder:"bc"}
//
match_: function (m, input) {
const pattern = _mhchemParser.patterns.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.patterns[m] as unknown as PatternFunction<string | string[]>)(input); // cannot use cached variable pattern here, because some pattern functions need this===mhchemParser
} else { // RegExp
const match = input.match(pattern);
if (match) {
if (match.length > 2) {
return { match_: match.slice(1), remainder: input.substring(match[0].length) };
} else {
return { match_: match[1] || match[0], remainder: input.substring(match[0].length) };
}
}
return null;
}
}
},
//
// Generic state machine actions
//
actions: {
'a=': function (buffer, m) { buffer.a = (buffer.a || "") + m; return undefined; },
'b=': function (buffer, m) { buffer.b = (buffer.b || "") + m; return undefined; },
'p=': function (buffer, m) { buffer.p = (buffer.p || "") + m; return undefined; },
'o=': function (buffer, m) { buffer.o = (buffer.o || "") + m; return undefined; },
'o=+p1': function (buffer, _m, a: string) { buffer.o = (buffer.o || "") + a; return undefined; },
'q=': function (buffer, m) { buffer.q = (buffer.q || "") + m; return undefined; },
'd=': function (buffer, m) { buffer.d = (buffer.d || "") + m; return undefined; },
'rm=': function (buffer, m) { buffer.rm = (buffer.rm || "") + m; return undefined; },
'text=': function (buffer, m) { buffer.text_ = (buffer.text_ || "") + m; return undefined; },
'insert': function (_buffer, _m, a: string) { return { type_: a } as Parsed; },
'insert+p1': function (_buffer, m, a) { return { type_: a, p1: m } as Parsed; },
'insert+p1+p2': function (_buffer, m, a) { return { type_: a, p1: m[0], p2: m[1] } as Parsed; },
'copy': function (_buffer, m) { return m; },
'write': function (_buffer, _m, a: string) { return a; },
'rm': function (_buffer, m) { return { type_: 'rm', p1: m }; },
'text': function (_buffer, m) { return _mhchemParser.go(m, 'text'); },
'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: BondName, k: BondName) { return { type_: 'bond', kind_: k || m }; },
'color0-output': function (_buffer, m) { return { type_: 'color0', color: m }; },
'ce': function (_buffer, m) { return _mhchemParser.go(m, 'ce'); },
'pu': function (_buffer, m) { return _mhchemParser.go(m, 'pu'); },
'1/2': function (_buffer, m) {
let ret: Parsed[] = [];
if (m.match(/^[+\-]/)) {
ret.push(m.substring(0, 1));
m = m.substring(1);
}
const n = m.match(/^([0-9]+|\$[a-z]\$|[a-z])\/([0-9]+)(\$[a-z]\$|[a-z])?$/);
n[1] = n[1].replace(/\$/g, "");
ret.push({ type_: 'frac', p1: n[1], p2: n[2] });
if (n[3]) {
n[3] = n[3].replace(/\$/g, "");
ret.push({ type_: 'tex-math', p1: n[3] });
}
return ret;
},
'9,9': function (_buffer, m) { return _mhchemParser.go(m, '9,9'); }
},
//
// Definition of state machines
//
stateMachines: {
//
// TeX state machine
//
'tex': {
transitions: _mhchemCreateTransitions({
'empty': {
'0': { action_: 'copy' } },
'\\ce{(...)}': {
'0': { action_: [ { type_: 'write', option: "{" }, 'ce', { type_: 'write', option: "}" }] } },
'\\pu{(...)}': {
'0': { action_: [ { type_: 'write', option: "{" }, 'pu', { type_: 'write', option: "}" }] } },
'else': {
'0': { action_: 'copy' } },
}),
actions: {}
},
//
// \ce state machines
//
//#region ce
'ce': { // main parser
transitions: _mhchemCreateTransitions({
'empty': {
'*': { action_: 'output' } },
'else': {
'0|1|2': { action_: 'beginsWithBond=false', revisit: true, toContinue: true } },
'oxidation$': {
'0': { action_: 'oxidation-output' } },
'CMT': {
'r': { action_: 'rdt=', nextState: 'rt' },
'rd': { action_: 'rqt=', nextState: 'rdt' } },
'arrowUpDown': {
'0|1|2|as': { action_: [ 'sb=false', 'output', 'operator' ], 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' } },
'pm-operator': {
'0|1|2|a|as': { action_: [ 'sb=false', 'output', { type_: 'operator', option: '\\pm' } ], nextState: '0' } },
'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_: [ 'output', { type_: 'insert', option: 'hyphen' } ], nextState: '2' },
'd': { action_: [ 'output', { type_: 'insert', option: 'hyphen' } ], 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_: { type_: '- after o/d', option: false }, nextState: '2' },
'q': { action_: { type_: '- after o/d', option: false }, nextState: '2' },
'd|qd|dq': { action_: { type_: '- after o/d', option: true }, 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': { action_: [] } },
'space': {
'a': { action_: [], 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'} },
'1st-level escape': {
'1|2': { action_: [ 'output', { type_: 'insert+p1', option: '1st-level escape' } ] },
'*': { action_: [ 'output', { type_: 'insert+p1', option: '1st-level escape' } ], 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 $': {
'*': { action_: [ 'output', 'state of aggregation' ], nextState: '1' } },
'{[(': {
'a|as|o': { action_: [ 'o=', 'output', 'parenthesisLevel++' ], nextState: '2' },
'0|1|2|3': { action_: [ 'o=', 'output', 'parenthesisLevel++' ], nextState: '2' },
'*': { action_: [ 'output', 'o=', 'output', 'parenthesisLevel++' ], nextState: '2' } },
')]}': {
'0|1|2|3|b|p|bp|o': { action_: [ 'o=', 'parenthesisLevel--' ], nextState: 'o' },
'a|as|d|D|q|qd|qD|dq': { action_: [ 'output', 'o=', 'parenthesisLevel--' ], nextState: 'o' } },
', ': {
'*': { action_: [ 'output', 'comma' ], nextState: '0' } },
'^_': { // ^ and _ without a sensible argument
'*': { action_: [] } },
'^{(...)}|^($...$)': {
'0|1|2|as': { action_: 'b=', nextState: 'b' },
'p': { action_: 'b=', nextState: 'bp' },
'3|o': { action_: 'd= kv', nextState: 'D' },
'q': { action_: 'd=', nextState: 'qD' },
'd|D|qd|qD|dq': { action_: [ 'output', 'd=' ], nextState: 'D' } },
'^a|^\\x{}{}|^\\x{}|^\\x|\'': {
'0|1|2|as': { action_: 'b=', nextState: 'b' },
'p': { action_: 'b=', nextState: 'bp' },
'3|o': { action_: 'd= kv', nextState: 'd' },
'q': { action_: 'd=', nextState: 'qd' },
'd|qd|D|qD': { action_: 'd=' },
'dq': { action_: [ 'output', 'd=' ], nextState: 'd' } },
'_{(state of aggregation)}$': {
'd|D|q|qd|qD|dq': { action_: [ 'output', 'q=' ], nextState: 'q' } },
'_{(...)}|_($...$)|_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 }, { type_: 'insert', option: 'tinySkip' } ], nextState: '1' } },
'{}': {
'*': { 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{(...)}{(...)}': {
'*': { action_: [ { type_: 'output', option: 2 }, 'color-output' ], nextState: '3' } },
'\\color{(...)}': {
'*': { action_: [ { type_: 'output', option: 2 }, 'color0-output' ] } },
'\\ce{(...)}': {
'*': { action_: [ { type_: 'output', option: 2 }, 'ce' ], nextState: '3' } },
'\\,': {
'*': { action_: [ { type_: 'output', option: 1 }, 'copy' ], nextState: '1' } },
'\\pu{(...)}': {
'*': { action_: [ 'output', { type_: 'write', option: "{" }, 'pu', { type_: 'write', option: "}" } ], 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_: [ '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) {
let ret;
if ((buffer.d || "").match(/^[1-9][0-9]*$/)) {
const tmp = buffer.d;
buffer.d = undefined;
ret = this['output'](buffer);
ret.push({ type_: 'tinySkip' });
buffer.b = tmp;
} else {
ret = this['output'](buffer);
}
_mhchemParser.actions['o='](buffer, m);
return ret;
},
'd= kv': function (buffer, m) {
buffer.d = m;
buffer.dType = 'kv';
return undefined;
},
'charge or bond': function (buffer, m): undefined | Parsed[] {
if (buffer['beginsWithBond']) {
let ret: Parsed[] = [];
_mhchemParser.concatArray(ret, this['output'](buffer));
_mhchemParser.concatArray(ret, _mhchemParser.actions['bond'](buffer, m, "-"));
return ret;
} else {
buffer.d = m;
return undefined;
}
},
'- after o/d': function (buffer, m, isAfterD) {
let c1 = _mhchemParser.patterns.match_('orbital', buffer.o || "");
const c2 = _mhchemParser.patterns.match_('one lowercase greek letter $', buffer.o || "");
const c3 = _mhchemParser.patterns.match_('one lowercase latin letter $', buffer.o || "");
const c4 = _mhchemParser.patterns.match_('$one lowercase latin letter$ $', buffer.o || "");
const hyphenFollows = m==="-" && ( c1 && c1.remainder==="" || c2 || c3 || c4 );
if (hyphenFollows && !buffer.a && !buffer.b && !buffer.p && !buffer.d && !buffer.q && !c1 && c3) {
buffer.o = '$' + buffer.o + '$';
}
let ret: Parsed[] = [];
if (hyphenFollows) {
_mhchemParser.concatArray(ret, this['output'](buffer));
ret.push({ type_: 'hyphen' });
} else {
c1 = _mhchemParser.patterns.match_('digits', buffer.d || "");
if (isAfterD && c1 && c1.remainder==='') {
_mhchemParser.concatArray(ret, _mhchemParser.actions['d='](buffer, m));
_mhchemParser.concatArray(ret, this['output'](buffer));
} else {
_mhchemParser.concatArray(ret, this['output'](buffer));
_mhchemParser.concatArray(ret, _mhchemParser.actions['bond'](buffer, m, "-"));
}
}
return ret;
},
'a to o': function (buffer) {
buffer.o = buffer.a;
buffer.a = undefined;
return undefined;
},
'sb=true': function (buffer) { buffer.sb = true; return undefined; },
'sb=false': function (buffer) { buffer.sb = false; return undefined; },
'beginsWithBond=true': function (buffer) { buffer['beginsWithBond'] = true; return undefined; },
'beginsWithBond=false': function (buffer) { buffer['beginsWithBond'] = false; return undefined; },
'parenthesisLevel++': function (buffer) { buffer['parenthesisLevel']++; return undefined; },
'parenthesisLevel--': function (buffer) { buffer['parenthesisLevel']--; return undefined; },
'state of aggregation': function (_buffer, m) {
return { type_: 'state of aggregation', p1: _mhchemParser.go(m, 'o') };
},
'comma': function (buffer, m) {
const a = m.replace(/\s*$/, '');
const 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)
let ret: Parsed | Parsed[];
if (!buffer.r) {
ret = [];
if (!buffer.a && !buffer.b && !buffer.p && !buffer.o && !buffer.q && !buffer.d && !entityFollows) {
//ret = [];
} 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.dType==='kv' && _mhchemParser.patterns.match_('d-oxidation$', buffer.d || "")) {
buffer.dType = 'oxidation';
} else if (buffer.o && buffer.dType==='kv' && !buffer.q) {
buffer.dType = undefined;
}
}
ret.push({
type_: 'chemfive',
a: _mhchemParser.go(buffer.a, 'a'),
b: _mhchemParser.go(buffer.b, 'bd'),
p: _mhchemParser.go(buffer.p, 'pq'),
o: _mhchemParser.go(buffer.o, 'o'),
q: _mhchemParser.go(buffer.q, 'pq'),
d: _mhchemParser.go(buffer.d, (buffer.dType === 'oxidation' ? 'oxidation' : 'bd')),
dType: buffer.dType
});
}
} else { // r
let rd: Parsed[];
if (buffer.rdt === 'M') {
rd = _mhchemParser.go(buffer.rd, 'tex-math');
} else if (buffer.rdt === 'T') {
rd = [ { type_: 'text', p1: buffer.rd || "" } ];
} else {
rd = _mhchemParser.go(buffer.rd, 'ce');
}
let rq: Parsed[];
if (buffer.rqt === 'M') {
rq = _mhchemParser.go(buffer.rq, 'tex-math');
} else if (buffer.rqt === 'T') {
rq = [ { type_: 'text', p1: buffer.rq || ""} ];
} else {
rq = _mhchemParser.go(buffer.rq, 'ce');
}
ret = {
type_: 'arrow',
r: buffer.r,
rd: rd,
rq: rq
};
}
for (const p in buffer) {
if (p !== 'parenthesisLevel' && p !== 'beginsWithBond') {
//@ts-ignore
delete buffer[p];
}
}
return ret;
},
'oxidation-output': function (_buffer, m) {
let ret = [ "{" ];
_mhchemParser.concatArray(ret, _mhchemParser.go(m, 'oxidation'));
ret.push("}");
return ret;
},
'frac-output': function (_buffer, m) {
return { type_: 'frac-ce', p1: _mhchemParser.go(m[0], 'ce'), p2: _mhchemParser.go(m[1], 'ce') };
},
'overset-output': function (_buffer, m) {
return { type_: 'overset', p1: _mhchemParser.go(m[0], 'ce'), p2: _mhchemParser.go(m[1], 'ce') };
},
'underset-output': function (_buffer, m) {
return { type_: 'underset', p1: _mhchemParser.go(m[0], 'ce'), p2: _mhchemParser.go(m[1], 'ce') };
},
'underbrace-output': function (_buffer, m) {
return { type_: 'underbrace', p1: _mhchemParser.go(m[0], 'ce'), p2: _mhchemParser.go(m[1], 'ce') };
},
'color-output': function (_buffer, m) {
return { type_: 'color', color1: m[0], color2: _mhchemParser.go(m[1], 'ce') };
},
'r=': function (buffer, m: ArrowName) { buffer.r = m; return undefined; },
'rdt=': function (buffer, m) { buffer.rdt = m; return undefined; },
'rd=': function (buffer, m) { buffer.rd = m; return undefined; },
'rqt=': function (buffer, m) { buffer.rqt = m; return undefined; },
'rq=': function (buffer, m) { buffer.rq = m; return undefined; },
'operator': function (_buffer, m, p1) { return { type_: 'operator', kind_: (p1 || m) } as Parsed; }
}
},
'a': {
transitions: _mhchemCreateTransitions({
'empty': {
'*': { action_: [] } },
'1/2$': {
'0': { action_: '1/2' } },
'else': {
'0': { action_: [], nextState: '1', revisit: true } },
'${(...)}$__$(...)$': {
'*': { action_: 'tex-math tight', nextState: '1' } },
',': {
'*': { action_: { type_: 'insert', option: 'commaDecimal' } } },
'else2': {
'*': { action_: 'copy' } }
}),
actions: {}
},
'o': {
transitions: _mhchemCreateTransitions({
'empty': {
'*': { action_: [] } },
'1/2$': {
'0': { action_: '1/2' } },
'else': {
'0': { action_: [], nextState: '1', revisit: true } },
'letters': {
'*': { action_: 'rm' } },
'\\ca': {
'*': { action_: { type_: 'insert', option: 'circa' } } },
'\\pu{(...)}': {
'*': { action_: [ { type_: 'write', option: "{" }, 'pu', { type_: 'write', option: "}" } ] } },
'\\x{}{}|\\x{}|\\x': {
'*': { action_: 'copy' } },
'${(...)}$__$(...)$': {
'*': { action_: 'tex-math' } },
'{(...)}': {
'*': { action_: [ { type_: 'write', option: "{" }, 'text', { type_: 'write', option: "}" } ] } },
'else2': {
'*': { action_: 'copy' } }
}),
actions: {}
},
'text': {
transitions: _mhchemCreateTransitions({
'empty': {
'*': { action_: 'output' } },
'{...}': {
'*': { action_: 'text=' } },
'${(...)}$__$(...)$': {
'*': { action_: 'tex-math' } },
'\\greek': {
'*': { action_: [ 'output', 'rm' ] } },
'\\pu{(...)}': {
'*': { action_: [ 'output', { type_: 'write', option: "{" }, 'pu', { type_: 'write', option: "}" } ] } },
'\\,|\\x{}{}|\\x{}|\\x': {
'*': { action_: [ 'output', 'copy' ] } },
'else': {
'*': { action_: 'text=' } }
}),
actions: {
'output': function (buffer): undefined | Parsed {
if (buffer.text_) {
let ret: Parsed = { type_: 'text', p1: buffer.text_ };
//@ts-ignore
for (const p in buffer) { delete buffer[p]; }
return ret;
}
return undefined;
}
}
},
'pq': {
transitions: _mhchemCreateTransitions({
'empty': {
'*': { action_: [] } },
'state of aggregation $': {
'*': { action_: 'state of aggregation' } },
'i$': {
'0': { action_: [], nextState: '!f', revisit: true } },
'(KV letters),': {
'0': { action_: 'rm', nextState: '0' } },
'formula$': {
'0': { action_: [], nextState: 'f', revisit: true } },
'1/2$': {
'0': { action_: '1/2' } },
'else': {
'0': { action_: [], 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{(...)}{(...)}': {
'*': { action_: 'color-output' } },
'\\color{(...)}': {
'*': { action_: 'color0-output' } },
'\\ce{(...)}': {
'*': { action_: 'ce' } },
'\\pu{(...)}': {
'*': { action_: [ { type_: 'write', option: "{" }, 'pu', { type_: 'write', option: "}" } ] } },
'\\,|\\x{}{}|\\x{}|\\x': {
'*': { action_: 'copy' } },
'else2': {
'*': { action_: 'copy' } }
}),
actions: {
'state of aggregation': function (_buffer, m) {
return { type_: 'state of aggregation subscript', p1: _mhchemParser.go(m, 'o') };
},
'color-output': function (_buffer, m) {
return { type_: 'color', color1: m[0], color2: _mhchemParser.go(m[1], 'pq') };
}
}
},
'bd': {
transitions: _mhchemCreateTransitions({
'empty': {
'*': { action_: [] } },
'x$': {
'0': { action_: [], nextState: '!f', revisit: true } },
'formula$': {
'0': { action_: [], nextState: 'f', revisit: true } },
'else': {
'0': { action_: [], 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{(...)}{(...)}': {
'*': { action_: 'color-output' } },
'\\color{(...)}': {
'*': { action_: 'color0-output' } },
'\\ce{(...)}': {
'*': { action_: 'ce' } },
'\\pu{(...)}': {
'*': { action_: [ { type_: 'write', option: "{" }, 'pu', { type_: 'write', option: "}" } ] } },
'\\,|\\x{}{}|\\x{}|\\x': {
'*': { action_: 'copy' } },
'else2': {