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smalltalk.js
168 lines
| 4.4 KiB
| application/javascript
|
JavascriptLexer
r1 | // 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.defineMode('smalltalk', function(config) { | ||||
var specialChars = /[+\-\/\\*~<>=@%|&?!.,:;^]/; | ||||
var keywords = /true|false|nil|self|super|thisContext/; | ||||
var Context = function(tokenizer, parent) { | ||||
this.next = tokenizer; | ||||
this.parent = parent; | ||||
}; | ||||
var Token = function(name, context, eos) { | ||||
this.name = name; | ||||
this.context = context; | ||||
this.eos = eos; | ||||
}; | ||||
var State = function() { | ||||
this.context = new Context(next, null); | ||||
this.expectVariable = true; | ||||
this.indentation = 0; | ||||
this.userIndentationDelta = 0; | ||||
}; | ||||
State.prototype.userIndent = function(indentation) { | ||||
this.userIndentationDelta = indentation > 0 ? (indentation / config.indentUnit - this.indentation) : 0; | ||||
}; | ||||
var next = function(stream, context, state) { | ||||
var token = new Token(null, context, false); | ||||
var aChar = stream.next(); | ||||
if (aChar === '"') { | ||||
token = nextComment(stream, new Context(nextComment, context)); | ||||
} else if (aChar === '\'') { | ||||
token = nextString(stream, new Context(nextString, context)); | ||||
} else if (aChar === '#') { | ||||
if (stream.peek() === '\'') { | ||||
stream.next(); | ||||
token = nextSymbol(stream, new Context(nextSymbol, context)); | ||||
} else { | ||||
if (stream.eatWhile(/[^\s.{}\[\]()]/)) | ||||
token.name = 'string-2'; | ||||
else | ||||
token.name = 'meta'; | ||||
} | ||||
} else if (aChar === '$') { | ||||
if (stream.next() === '<') { | ||||
stream.eatWhile(/[^\s>]/); | ||||
stream.next(); | ||||
} | ||||
token.name = 'string-2'; | ||||
} else if (aChar === '|' && state.expectVariable) { | ||||
token.context = new Context(nextTemporaries, context); | ||||
} else if (/[\[\]{}()]/.test(aChar)) { | ||||
token.name = 'bracket'; | ||||
token.eos = /[\[{(]/.test(aChar); | ||||
if (aChar === '[') { | ||||
state.indentation++; | ||||
} else if (aChar === ']') { | ||||
state.indentation = Math.max(0, state.indentation - 1); | ||||
} | ||||
} else if (specialChars.test(aChar)) { | ||||
stream.eatWhile(specialChars); | ||||
token.name = 'operator'; | ||||
token.eos = aChar !== ';'; // ; cascaded message expression | ||||
} else if (/\d/.test(aChar)) { | ||||
stream.eatWhile(/[\w\d]/); | ||||
token.name = 'number'; | ||||
} else if (/[\w_]/.test(aChar)) { | ||||
stream.eatWhile(/[\w\d_]/); | ||||
token.name = state.expectVariable ? (keywords.test(stream.current()) ? 'keyword' : 'variable') : null; | ||||
} else { | ||||
token.eos = state.expectVariable; | ||||
} | ||||
return token; | ||||
}; | ||||
var nextComment = function(stream, context) { | ||||
stream.eatWhile(/[^"]/); | ||||
return new Token('comment', stream.eat('"') ? context.parent : context, true); | ||||
}; | ||||
var nextString = function(stream, context) { | ||||
stream.eatWhile(/[^']/); | ||||
return new Token('string', stream.eat('\'') ? context.parent : context, false); | ||||
}; | ||||
var nextSymbol = function(stream, context) { | ||||
stream.eatWhile(/[^']/); | ||||
return new Token('string-2', stream.eat('\'') ? context.parent : context, false); | ||||
}; | ||||
var nextTemporaries = function(stream, context) { | ||||
var token = new Token(null, context, false); | ||||
var aChar = stream.next(); | ||||
if (aChar === '|') { | ||||
token.context = context.parent; | ||||
token.eos = true; | ||||
} else { | ||||
stream.eatWhile(/[^|]/); | ||||
token.name = 'variable'; | ||||
} | ||||
return token; | ||||
}; | ||||
return { | ||||
startState: function() { | ||||
return new State; | ||||
}, | ||||
token: function(stream, state) { | ||||
state.userIndent(stream.indentation()); | ||||
if (stream.eatSpace()) { | ||||
return null; | ||||
} | ||||
var token = state.context.next(stream, state.context, state); | ||||
state.context = token.context; | ||||
state.expectVariable = token.eos; | ||||
return token.name; | ||||
}, | ||||
blankLine: function(state) { | ||||
state.userIndent(0); | ||||
}, | ||||
indent: function(state, textAfter) { | ||||
var i = state.context.next === next && textAfter && textAfter.charAt(0) === ']' ? -1 : state.userIndentationDelta; | ||||
return (state.indentation + i) * config.indentUnit; | ||||
}, | ||||
electricChars: ']' | ||||
}; | ||||
}); | ||||
CodeMirror.defineMIME('text/x-stsrc', {name: 'smalltalk'}); | ||||
}); | ||||