82 lines
3.0 KiB
JavaScript
82 lines
3.0 KiB
JavaScript
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CodeMirror.multiplexingMode = function(outer /*, others */) {
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// Others should be {open, close, mode [, delimStyle]} objects
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var others = Array.prototype.slice.call(arguments, 1);
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var n_others = others.length;
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function indexOf(string, pattern, from) {
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if (typeof pattern == "string") return string.indexOf(pattern, from);
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var m = pattern.exec(from ? string.slice(from) : string);
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return m ? m.index + from : -1;
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}
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return {
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startState: function() {
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return {
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outer: CodeMirror.startState(outer),
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innerActive: null,
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inner: null
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};
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},
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copyState: function(state) {
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return {
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outer: CodeMirror.copyState(outer, state.outer),
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innerActive: state.innerActive,
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inner: state.innerActive && CodeMirror.copyState(state.innerActive.mode, state.inner)
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};
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},
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token: function(stream, state) {
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if (!state.innerActive) {
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var cutOff = Infinity, oldContent = stream.string;
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for (var i = 0; i < n_others; ++i) {
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var other = others[i];
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var found = indexOf(oldContent, other.open, stream.pos);
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if (found == stream.pos) {
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stream.match(other.open);
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state.innerActive = other;
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state.inner = CodeMirror.startState(other.mode, outer.indent ? outer.indent(state.outer, "") : 0);
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return other.delimStyle;
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} else if (found != -1 && found < cutOff) {
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cutOff = found;
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}
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}
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if (cutOff != Infinity) stream.string = oldContent.slice(0, cutOff);
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var outerToken = outer.token(stream, state.outer);
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if (cutOff != Infinity) stream.string = oldContent;
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return outerToken;
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} else {
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var curInner = state.innerActive, oldContent = stream.string;
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var found = indexOf(oldContent, curInner.close, stream.pos);
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if (found == stream.pos) {
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stream.match(curInner.close);
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state.innerActive = state.inner = null;
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return curInner.delimStyle;
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}
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if (found > -1) stream.string = oldContent.slice(0, found);
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var innerToken = curInner.mode.token(stream, state.inner);
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if (found > -1) stream.string = oldContent;
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var cur = stream.current(), found = cur.indexOf(curInner.close);
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if (found > -1) stream.backUp(cur.length - found);
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return innerToken;
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}
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},
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indent: function(state, textAfter) {
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var mode = state.innerActive ? state.innerActive.mode : outer;
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if (!mode.indent) return CodeMirror.Pass;
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return mode.indent(state.innerActive ? state.inner : state.outer, textAfter);
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},
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compareStates: function(a, b) {
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if (a.innerActive != b.innerActive) return false;
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var mode = a.innerActive || outer;
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if (!mode.compareStates) return CodeMirror.Pass;
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return mode.compareStates(a.innerActive ? a.inner : a.outer,
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b.innerActive ? b.inner : b.outer);
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},
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electricChars: outer.electricChars
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};
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};
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