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/*
* Author: Constantin Jucovschi (c.jucovschi@jacobs-university.de)
* Licence: MIT
*/
CodeMirror.defineMode("stex", function(cmCfg, modeCfg)
{
function pushCommand(state, command) {
state.cmdState.push(command);
}
function peekCommand(state) {
if (state.cmdState.length>0)
return state.cmdState[state.cmdState.length-1];
else
return null;
}
function popCommand(state) {
if (state.cmdState.length>0) {
var plug = state.cmdState.pop();
plug.closeBracket();
}
}
function applyMostPowerful(state) {
var context = state.cmdState;
for (var i = context.length - 1; i >= 0; i--) {
var plug = context[i];
if (plug.name=="DEFAULT")
continue;
return plug.styleIdentifier();
}
return null;
}
function addPluginPattern(pluginName, cmdStyle, brackets, styles) {
return function () {
this.name=pluginName;
this.bracketNo = 0;
this.style=cmdStyle;
this.styles = styles;
this.brackets = brackets;
this.styleIdentifier = function(content) {
if (this.bracketNo<=this.styles.length)
return this.styles[this.bracketNo-1];
else
return null;
};
this.openBracket = function(content) {
this.bracketNo++;
return "bracket";
};
this.closeBracket = function(content) {
};
}
}
var plugins = new Array();
plugins["importmodule"] = addPluginPattern("importmodule", "tag", "{[", ["string", "builtin"]);
plugins["documentclass"] = addPluginPattern("documentclass", "tag", "{[", ["", "atom"]);
plugins["usepackage"] = addPluginPattern("documentclass", "tag", "[", ["atom"]);
plugins["begin"] = addPluginPattern("documentclass", "tag", "[", ["atom"]);
plugins["end"] = addPluginPattern("documentclass", "tag", "[", ["atom"]);
plugins["DEFAULT"] = function () {
this.name="DEFAULT";
this.style="tag";
this.styleIdentifier = function(content) {
};
this.openBracket = function(content) {
};
this.closeBracket = function(content) {
};
};
function setState(state, f) {
state.f = f;
}
function normal(source, state) {
if (source.match(/^\\[a-zA-Z@]+/)) {
var cmdName = source.current();
cmdName = cmdName.substr(1, cmdName.length-1);
var plug;
if (plugins.hasOwnProperty(cmdName)) {
plug = plugins[cmdName];
} else {
plug = plugins["DEFAULT"];
}
plug = new plug();
pushCommand(state, plug);
setState(state, beginParams);
return plug.style;
}
// escape characters
if (source.match(/^\\[$&%#{}_]/)) {
return "tag";
}
// white space control characters
if (source.match(/^\\[,;!\/]/)) {
return "tag";
}
var ch = source.next();
if (ch == "%") {
// special case: % at end of its own line; stay in same state
if (!source.eol()) {
setState(state, inCComment);
}
return "comment";
}
else if (ch=='}' || ch==']') {
plug = peekCommand(state);
if (plug) {
plug.closeBracket(ch);
setState(state, beginParams);
} else
return "error";
return "bracket";
} else if (ch=='{' || ch=='[') {
plug = plugins["DEFAULT"];
plug = new plug();
pushCommand(state, plug);
return "bracket";
}
else if (/\d/.test(ch)) {
source.eatWhile(/[\w.%]/);
return "atom";
}
else {
source.eatWhile(/[\w-_]/);
return applyMostPowerful(state);
}
}
function inCComment(source, state) {
source.skipToEnd();
setState(state, normal);
return "comment";
}
function beginParams(source, state) {
var ch = source.peek();
if (ch == '{' || ch == '[') {
var lastPlug = peekCommand(state);
var style = lastPlug.openBracket(ch);
source.eat(ch);
setState(state, normal);
return "bracket";
}
if (/[ \t\r]/.test(ch)) {
source.eat(ch);
return null;
}
setState(state, normal);
lastPlug = peekCommand(state);
if (lastPlug) {
popCommand(state);
}
return normal(source, state);
}
return {
startState: function() { return { f:normal, cmdState:[] }; },
copyState: function(s) { return { f: s.f, cmdState: s.cmdState.slice(0, s.cmdState.length) }; },
token: function(stream, state) {
var t = state.f(stream, state);
var w = stream.current();
return t;
}
};
});
CodeMirror.defineMIME("text/x-stex", "stex");
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