]>
Commit | Line | Data |
---|---|---|
1 | // Utility function that allows modes to be combined. The mode given | |
2 | // as the base argument takes care of most of the normal mode | |
3 | // functionality, but a second (typically simple) mode is used, which | |
4 | // can override the style of text. Both modes get to parse all of the | |
5 | // text, but when both assign a non-null style to a piece of code, the | |
6 | // overlay wins, unless the combine argument was true, in which case | |
7 | // the styles are combined. | |
8 | ||
9 | // overlayParser is the old, deprecated name | |
10 | CodeMirror.overlayMode = CodeMirror.overlayParser = function(base, overlay, combine) { | |
11 | return { | |
12 | startState: function() { | |
13 | return { | |
14 | base: CodeMirror.startState(base), | |
15 | overlay: CodeMirror.startState(overlay), | |
16 | basePos: 0, baseCur: null, | |
17 | overlayPos: 0, overlayCur: null | |
18 | }; | |
19 | }, | |
20 | copyState: function(state) { | |
21 | return { | |
22 | base: CodeMirror.copyState(base, state.base), | |
23 | overlay: CodeMirror.copyState(overlay, state.overlay), | |
24 | basePos: state.basePos, baseCur: null, | |
25 | overlayPos: state.overlayPos, overlayCur: null | |
26 | }; | |
27 | }, | |
28 | ||
29 | token: function(stream, state) { | |
30 | if (stream.start == state.basePos) { | |
31 | state.baseCur = base.token(stream, state.base); | |
32 | state.basePos = stream.pos; | |
33 | } | |
34 | if (stream.start == state.overlayPos) { | |
35 | stream.pos = stream.start; | |
36 | state.overlayCur = overlay.token(stream, state.overlay); | |
37 | state.overlayPos = stream.pos; | |
38 | } | |
39 | stream.pos = Math.min(state.basePos, state.overlayPos); | |
40 | if (stream.eol()) state.basePos = state.overlayPos = 0; | |
41 | ||
42 | if (state.overlayCur == null) return state.baseCur; | |
43 | if (state.baseCur != null && combine) return state.baseCur + " " + state.overlayCur; | |
44 | else return state.overlayCur; | |
45 | }, | |
46 | ||
47 | indent: base.indent && function(state, textAfter) { | |
48 | return base.indent(state.base, textAfter); | |
49 | }, | |
50 | electricChars: base.electricChars, | |
51 | ||
52 | innerMode: function(state) { return {state: state.base, mode: base}; }, | |
53 | ||
54 | blankLine: function(state) { | |
55 | if (base.blankLine) base.blankLine(state.base); | |
56 | if (overlay.blankLine) overlay.blankLine(state.overlay); | |
57 | } | |
58 | }; | |
59 | }; |