pegjs.js
3.48 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
// 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"), require("../javascript/javascript"));
else if (typeof define == "function" && define.amd) // AMD
define(["../../lib/codemirror", "../javascript/javascript"], mod);
else // Plain browser env
mod(CodeMirror);
})(function(CodeMirror) {
"use strict";
CodeMirror.defineMode("pegjs", function (config) {
var jsMode = CodeMirror.getMode(config, "javascript");
function identifier(stream) {
return stream.match(/^[a-zA-Z_][a-zA-Z0-9_]*/);
}
return {
startState: function () {
return {
inString: false,
stringType: null,
inComment: false,
inChracterClass: false,
braced: 0,
lhs: true,
localState: null
};
},
token: function (stream, state) {
if (stream)
//check for state changes
if (!state.inString && !state.inComment && ((stream.peek() == '"') || (stream.peek() == "'"))) {
state.stringType = stream.peek();
stream.next(); // Skip quote
state.inString = true; // Update state
}
if (!state.inString && !state.inComment && stream.match(/^\/\*/)) {
state.inComment = true;
}
//return state
if (state.inString) {
while (state.inString && !stream.eol()) {
if (stream.peek() === state.stringType) {
stream.next(); // Skip quote
state.inString = false; // Clear flag
} else if (stream.peek() === '\\') {
stream.next();
stream.next();
} else {
stream.match(/^.[^\\\"\']*/);
}
}
return state.lhs ? "property string" : "string"; // Token style
} else if (state.inComment) {
while (state.inComment && !stream.eol()) {
if (stream.match(/\*\//)) {
state.inComment = false; // Clear flag
} else {
stream.match(/^.[^\*]*/);
}
}
return "comment";
} else if (state.inChracterClass) {
while (state.inChracterClass && !stream.eol()) {
if (!(stream.match(/^[^\]\\]+/) || stream.match(/^\\./))) {
state.inChracterClass = false;
}
}
} else if (stream.peek() === '[') {
stream.next();
state.inChracterClass = true;
return 'bracket';
} else if (stream.match(/^\/\//)) {
stream.skipToEnd();
return "comment";
} else if (state.braced || stream.peek() === '{') {
if (state.localState === null) {
state.localState = jsMode.startState();
}
var token = jsMode.token(stream, state.localState);
var text = stream.current();
if (!token) {
for (var i = 0; i < text.length; i++) {
if (text[i] === '{') {
state.braced++;
} else if (text[i] === '}') {
state.braced--;
}
};
}
return token;
} else if (identifier(stream)) {
if (stream.peek() === ':') {
return 'variable';
}
return 'variable-2';
} else if (['[', ']', '(', ')'].indexOf(stream.peek()) != -1) {
stream.next();
return 'bracket';
} else if (!stream.eatSpace()) {
stream.next();
}
return null;
}
};
}, "javascript");
});