265 lines
9.0 KiB
JavaScript
265 lines
9.0 KiB
JavaScript
/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
|
|
/* vim: set ts=2 et sw=2 tw=80: */
|
|
|
|
/*************************************************************
|
|
*
|
|
* MathJax/extensions/TeX/newcommand.js
|
|
*
|
|
* Implements the \newcommand, \newenvironment and \def
|
|
* macros, and is loaded automatically when needed.
|
|
*
|
|
* ---------------------------------------------------------------------
|
|
*
|
|
* Copyright (c) 2009-2013 The MathJax Consortium
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
MathJax.Extension["TeX/newcommand"] = {
|
|
version: "2.3"
|
|
};
|
|
|
|
MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
|
|
|
|
var TEX = MathJax.InputJax.TeX;
|
|
var TEXDEF = TEX.Definitions;
|
|
|
|
TEXDEF.Add({
|
|
macros: {
|
|
newcommand: 'NewCommand',
|
|
renewcommand: 'NewCommand',
|
|
newenvironment: 'NewEnvironment',
|
|
renewenvironment: 'NewEnvironment',
|
|
def: 'MacroDef',
|
|
let: 'Let'
|
|
}
|
|
},null,true);
|
|
|
|
TEX.Parse.Augment({
|
|
|
|
/*
|
|
* Implement \newcommand{\name}[n]{...}
|
|
*/
|
|
NewCommand: function (name) {
|
|
var cs = this.trimSpaces(this.GetArgument(name)),
|
|
n = this.GetBrackets(name),
|
|
opt = this.GetBrackets(name),
|
|
def = this.GetArgument(name);
|
|
if (cs.charAt(0) === "\\") {cs = cs.substr(1)}
|
|
if (!cs.match(/^(.|[a-z]+)$/i)) {
|
|
TEX.Error(["IllegalControlSequenceName",
|
|
"Illegal control sequence name for %1",name]);
|
|
}
|
|
if (n) {
|
|
n = this.trimSpaces(n);
|
|
if (!n.match(/^[0-9]+$/)) {
|
|
TEX.Error(["IllegalParamNumber",
|
|
"Illegal number of parameters specified in %1",name]);
|
|
}
|
|
}
|
|
this.setDef(cs,['Macro',def,n,opt]);
|
|
},
|
|
|
|
/*
|
|
* Implement \newenvironment{name}[n][default]{begincmd}{endcmd}
|
|
*/
|
|
NewEnvironment: function (name) {
|
|
var env = this.trimSpaces(this.GetArgument(name)),
|
|
n = this.GetBrackets(name),
|
|
bdef = this.GetArgument(name),
|
|
edef = this.GetArgument(name);
|
|
if (n) {
|
|
n = this.trimSpaces(n);
|
|
if (!n.match(/^[0-9]+$/)) {
|
|
TEX.Error(["IllegalParamNumber",
|
|
"Illegal number of parameters specified in %1",name]);
|
|
}
|
|
}
|
|
this.setEnv(env,['BeginEnv','EndEnv',bdef,edef,n]);
|
|
},
|
|
|
|
/*
|
|
* Implement \def command
|
|
*/
|
|
MacroDef: function (name) {
|
|
var cs = this.GetCSname(name),
|
|
params = this.GetTemplate(name,"\\"+cs),
|
|
def = this.GetArgument(name);
|
|
if (!(params instanceof Array)) {this.setDef(cs,['Macro',def,params])}
|
|
else {this.setDef(cs,['MacroWithTemplate',def].concat(params))}
|
|
},
|
|
|
|
/*
|
|
* Implements the \let command
|
|
*/
|
|
Let: function (name) {
|
|
var cs = this.GetCSname(name), macro;
|
|
var c = this.GetNext(); if (c === "=") {this.i++; c = this.GetNext()}
|
|
//
|
|
// All \let commands create entries in the macros array, but we
|
|
// have to look in the various mathchar and delimiter arrays if
|
|
// the source isn't a macro already, and attach the data to a
|
|
// macro with the proper routine to process it.
|
|
//
|
|
// A command of the form \let\cs=char produces a macro equivalent
|
|
// to \def\cs{char}, which is as close as MathJax can get for this.
|
|
// So \let\bgroup={ is possible, but doesn't work as it does in TeX.
|
|
//
|
|
if (c === "\\") {
|
|
name = this.GetCSname(name);
|
|
macro = this.csFindMacro(name);
|
|
if (!macro) {
|
|
if (TEXDEF.mathchar0mi[name]) {macro = ["csMathchar0mi",TEXDEF.mathchar0mi[name]]} else
|
|
if (TEXDEF.mathchar0mo[name]) {macro = ["csMathchar0mo",TEXDEF.mathchar0mo[name]]} else
|
|
if (TEXDEF.mathchar7[name]) {macro = ["csMathchar7",TEXDEF.mathchar7[name]]} else
|
|
if (TEXDEF.delimiter["\\"+name] != null) {macro = ["csDelimiter",TEXDEF.delimiter["\\"+name]]}
|
|
}
|
|
} else {macro = ["Macro",c]; this.i++}
|
|
this.setDef(cs,macro);
|
|
},
|
|
|
|
/*
|
|
* Routines to set the macro and environment definitions
|
|
* (overridden by begingroup to make localized versions)
|
|
*/
|
|
setDef: function (name,value) {value.isUser = true; TEXDEF.macros[name] = value},
|
|
setEnv: function (name,value) {value.isUser = true; TEXDEF.environment[name] = value},
|
|
|
|
/*
|
|
* Get a CS name or give an error
|
|
*/
|
|
GetCSname: function (cmd) {
|
|
var c = this.GetNext();
|
|
if (c !== "\\") {
|
|
TEX.Error(["MissingCS",
|
|
"%1 must be followed by a control sequence", cmd])
|
|
}
|
|
var cs = this.trimSpaces(this.GetArgument(cmd));
|
|
return cs.substr(1);
|
|
},
|
|
|
|
/*
|
|
* Get a \def parameter template
|
|
*/
|
|
GetTemplate: function (cmd,cs) {
|
|
var c, params = [], n = 0;
|
|
c = this.GetNext(); var i = this.i;
|
|
while (this.i < this.string.length) {
|
|
c = this.GetNext();
|
|
if (c === '#') {
|
|
if (i !== this.i) {params[n] = this.string.substr(i,this.i-i)}
|
|
c = this.string.charAt(++this.i);
|
|
if (!c.match(/^[1-9]$/)) {
|
|
TEX.Error(["CantUseHash2",
|
|
"Illegal use of # in template for %1",cs]);
|
|
}
|
|
if (parseInt(c) != ++n) {
|
|
TEX.Error(["SequentialParam",
|
|
"Parameters for %1 must be numbered sequentially",cs]);
|
|
}
|
|
i = this.i+1;
|
|
} else if (c === '{') {
|
|
if (i !== this.i) {params[n] = this.string.substr(i,this.i-i)}
|
|
if (params.length > 0) {return [n,params]} else {return n}
|
|
}
|
|
this.i++;
|
|
}
|
|
TEX.Error(["MissingReplacementString",
|
|
"Missing replacement string for definition of %1",cmd]);
|
|
},
|
|
|
|
/*
|
|
* Process a macro with a parameter template
|
|
*/
|
|
MacroWithTemplate: function (name,text,n,params) {
|
|
if (n) {
|
|
var args = []; this.GetNext();
|
|
if (params[0] && !this.MatchParam(params[0])) {
|
|
TEX.Error(["MismatchUseDef",
|
|
"Use of %1 doesn't match its definition",name]);
|
|
}
|
|
for (var i = 0; i < n; i++) {args.push(this.GetParameter(name,params[i+1]))}
|
|
text = this.SubstituteArgs(args,text);
|
|
}
|
|
this.string = this.AddArgs(text,this.string.slice(this.i));
|
|
this.i = 0;
|
|
if (++this.macroCount > TEX.config.MAXMACROS) {
|
|
TEX.Error(["MaxMacroSub1",
|
|
"MathJax maximum macro substitution count exceeded; " +
|
|
"is there a recursive macro call?"]);
|
|
}
|
|
},
|
|
|
|
/*
|
|
* Process a user-defined environment
|
|
*/
|
|
BeginEnv: function (begin,bdef,edef,n) {
|
|
if (n) {
|
|
var args = [];
|
|
for (var i = 0; i < n; i++) {args.push(this.GetArgument("\\begin{"+name+"}"))}
|
|
bdef = this.SubstituteArgs(args,bdef);
|
|
edef = this.SubstituteArgs(args,edef);
|
|
}
|
|
begin.edef = edef;
|
|
this.string = this.AddArgs(bdef,this.string.slice(this.i)); this.i = 0;
|
|
return begin;
|
|
},
|
|
EndEnv: function (begin,row) {
|
|
this.string = this.AddArgs(begin.edef,this.string.slice(this.i)); this.i = 0
|
|
return row;
|
|
},
|
|
|
|
/*
|
|
* Find a single parameter delimited by a trailing template
|
|
*/
|
|
GetParameter: function (name,param) {
|
|
if (param == null) {return this.GetArgument(name)}
|
|
var i = this.i, j = 0, hasBraces = 0;
|
|
while (this.i < this.string.length) {
|
|
if (this.string.charAt(this.i) === '{') {
|
|
if (this.i === i) {hasBraces = 1}
|
|
this.GetArgument(name); j = this.i - i;
|
|
} else if (this.MatchParam(param)) {
|
|
if (hasBraces) {i++; j -= 2}
|
|
return this.string.substr(i,j);
|
|
} else {
|
|
this.i++; j++; hasBraces = 0;
|
|
}
|
|
}
|
|
TEX.Error(["RunawayArgument","Runaway argument for %1?",name]);
|
|
},
|
|
|
|
/*
|
|
* Check if a template is at the current location.
|
|
* (The match must be exact, with no spacing differences. TeX is
|
|
* a little more forgiving than this about spaces after macro names)
|
|
*/
|
|
MatchParam: function (param) {
|
|
if (this.string.substr(this.i,param.length) !== param) {return 0}
|
|
this.i += param.length;
|
|
return 1;
|
|
}
|
|
|
|
});
|
|
|
|
TEX.Environment = function (name) {
|
|
TEXDEF.environment[name] = ['BeginEnv','EndEnv'].concat([].slice.call(arguments,1));
|
|
TEXDEF.environment[name].isUser = true;
|
|
}
|
|
|
|
MathJax.Hub.Startup.signal.Post("TeX newcommand Ready");
|
|
|
|
});
|
|
|
|
MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/newcommand.js");
|