86 lines
3.0 KiB
JavaScript
86 lines
3.0 KiB
JavaScript
|
// CodeMirror, copyright (c) by Marijn Haverbeke and others
|
||
|
|
// Distributed under an MIT license: http://codemirror.net/LICENSE
|
||
|
|
|
||
|
|
// Utility function that allows modes to be combined. The mode given
|
||
|
|
// as the base argument takes care of most of the normal mode
|
||
|
|
// functionality, but a second (typically simple) mode is used, which
|
||
|
|
// can override the style of text. Both modes get to parse all of the
|
||
|
|
// text, but when both assign a non-null style to a piece of code, the
|
||
|
|
// overlay wins, unless the combine argument was true and not overridden,
|
||
|
|
// or state.overlay.combineTokens was true, in which case the styles are
|
||
|
|
// combined.
|
||
|
|
|
||
|
|
(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.overlayMode = function(base, overlay, combine) {
|
||
|
|
return {
|
||
|
|
startState: function() {
|
||
|
|
return {
|
||
|
|
base: CodeMirror.startState(base),
|
||
|
|
overlay: CodeMirror.startState(overlay),
|
||
|
|
basePos: 0, baseCur: null,
|
||
|
|
overlayPos: 0, overlayCur: null,
|
||
|
|
streamSeen: null
|
||
|
|
};
|
||
|
|
},
|
||
|
|
copyState: function(state) {
|
||
|
|
return {
|
||
|
|
base: CodeMirror.copyState(base, state.base),
|
||
|
|
overlay: CodeMirror.copyState(overlay, state.overlay),
|
||
|
|
basePos: state.basePos, baseCur: null,
|
||
|
|
overlayPos: state.overlayPos, overlayCur: null
|
||
|
|
};
|
||
|
|
},
|
||
|
|
|
||
|
|
token: function(stream, state) {
|
||
|
|
if (stream != state.streamSeen ||
|
||
|
|
Math.min(state.basePos, state.overlayPos) < stream.start) {
|
||
|
|
state.streamSeen = stream;
|
||
|
|
state.basePos = state.overlayPos = stream.start;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (stream.start == state.basePos) {
|
||
|
|
state.baseCur = base.token(stream, state.base);
|
||
|
|
state.basePos = stream.pos;
|
||
|
|
}
|
||
|
|
if (stream.start == state.overlayPos) {
|
||
|
|
stream.pos = stream.start;
|
||
|
|
state.overlayCur = overlay.token(stream, state.overlay);
|
||
|
|
state.overlayPos = stream.pos;
|
||
|
|
}
|
||
|
|
stream.pos = Math.min(state.basePos, state.overlayPos);
|
||
|
|
|
||
|
|
// state.overlay.combineTokens always takes precedence over combine,
|
||
|
|
// unless set to null
|
||
|
|
if (state.overlayCur == null) return state.baseCur;
|
||
|
|
else if (state.baseCur != null &&
|
||
|
|
state.overlay.combineTokens ||
|
||
|
|
combine && state.overlay.combineTokens == null)
|
||
|
|
return state.baseCur + " " + state.overlayCur;
|
||
|
|
else return state.overlayCur;
|
||
|
|
},
|
||
|
|
|
||
|
|
indent: base.indent && function(state, textAfter) {
|
||
|
|
return base.indent(state.base, textAfter);
|
||
|
|
},
|
||
|
|
electricChars: base.electricChars,
|
||
|
|
|
||
|
|
innerMode: function(state) { return {state: state.base, mode: base}; },
|
||
|
|
|
||
|
|
blankLine: function(state) {
|
||
|
|
if (base.blankLine) base.blankLine(state.base);
|
||
|
|
if (overlay.blankLine) overlay.blankLine(state.overlay);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
};
|
||
|
|
|
||
|
|
});
|