HackMD/public/vendor/codemirror/addon/mode/multiplex.js

123 lines
4.5 KiB
JavaScript

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
(function(mod) {
if (typeof exports == "object" && typeof module == "object") // CommonJS
mod(require("../../lib/codemirror"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
CodeMirror.multiplexingMode = function(outer /*, others */) {
// Others should be {open, close, mode [, delimStyle] [, innerStyle]} objects
var others = Array.prototype.slice.call(arguments, 1);
function indexOf(string, pattern, from, returnEnd) {
if (typeof pattern == "string") {
var found = string.indexOf(pattern, from);
return returnEnd && found > -1 ? found + pattern.length : found;
}
var m = pattern.exec(from ? string.slice(from) : string);
return m ? m.index + from + (returnEnd ? m[0].length : 0) : -1;
}
return {
startState: function() {
return {
outer: CodeMirror.startState(outer),
innerActive: null,
inner: null
};
},
copyState: function(state) {
return {
outer: CodeMirror.copyState(outer, state.outer),
innerActive: state.innerActive,
inner: state.innerActive && CodeMirror.copyState(state.innerActive.mode, state.inner)
};
},
token: function(stream, state) {
if (!state.innerActive) {
var cutOff = Infinity, oldContent = stream.string;
for (var i = 0; i < others.length; ++i) {
var other = others[i];
var found = indexOf(oldContent, other.open, stream.pos);
if (found == stream.pos) {
if (!other.parseDelimiters) stream.match(other.open);
state.innerActive = other;
state.inner = CodeMirror.startState(other.mode, outer.indent ? outer.indent(state.outer, "") : 0);
return other.delimStyle && (other.delimStyle + " " + other.delimStyle + "-open");
} else if (found != -1 && found < cutOff) {
cutOff = found;
}
}
if (cutOff != Infinity) stream.string = oldContent.slice(0, cutOff);
var outerToken = outer.token(stream, state.outer);
if (cutOff != Infinity) stream.string = oldContent;
return outerToken;
} else {
var curInner = state.innerActive, oldContent = stream.string;
if (!curInner.close && stream.sol()) {
state.innerActive = state.inner = null;
return this.token(stream, state);
}
var found = curInner.close ? indexOf(oldContent, curInner.close, stream.pos, curInner.parseDelimiters) : -1;
if (found == stream.pos && !curInner.parseDelimiters) {
stream.match(curInner.close);
state.innerActive = state.inner = null;
return curInner.delimStyle && (curInner.delimStyle + " " + curInner.delimStyle + "-close");
}
if (found > -1) stream.string = oldContent.slice(0, found);
var innerToken = curInner.mode.token(stream, state.inner);
if (found > -1) stream.string = oldContent;
if (found == stream.pos && curInner.parseDelimiters)
state.innerActive = state.inner = null;
if (curInner.innerStyle) {
if (innerToken) innerToken = innerToken + " " + curInner.innerStyle;
else innerToken = curInner.innerStyle;
}
return innerToken;
}
},
indent: function(state, textAfter) {
var mode = state.innerActive ? state.innerActive.mode : outer;
if (!mode.indent) return CodeMirror.Pass;
return mode.indent(state.innerActive ? state.inner : state.outer, textAfter);
},
blankLine: function(state) {
var mode = state.innerActive ? state.innerActive.mode : outer;
if (mode.blankLine) {
mode.blankLine(state.innerActive ? state.inner : state.outer);
}
if (!state.innerActive) {
for (var i = 0; i < others.length; ++i) {
var other = others[i];
if (other.open === "\n") {
state.innerActive = other;
state.inner = CodeMirror.startState(other.mode, mode.indent ? mode.indent(state.outer, "") : 0);
}
}
} else if (state.innerActive.close === "\n") {
state.innerActive = state.inner = null;
}
},
electricChars: outer.electricChars,
innerMode: function(state) {
return state.inner ? {state: state.inner, mode: state.innerActive.mode} : {state: state.outer, mode: outer};
}
};
};
});