turtle.js
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// 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("turtle", function(config) {
var indentUnit = config.indentUnit;
var curPunc;
function wordRegexp(words) {
return new RegExp("^(?:" + words.join("|") + ")$", "i");
}
var ops = wordRegexp([]);
var keywords = wordRegexp(["@prefix", "@base", "a"]);
var operatorChars = /[*+\-<>=&|]/;
function tokenBase(stream, state) {
var ch = stream.next();
curPunc = null;
if (ch == "<" && !stream.match(/^[\s\u00a0=]/, false)) {
stream.match(/^[^\s\u00a0>]*>?/);
return "atom";
}
else if (ch == "\"" || ch == "'") {
state.tokenize = tokenLiteral(ch);
return state.tokenize(stream, state);
}
else if (/[{}\(\),\.;\[\]]/.test(ch)) {
curPunc = ch;
return null;
}
else if (ch == "#") {
stream.skipToEnd();
return "comment";
}
else if (operatorChars.test(ch)) {
stream.eatWhile(operatorChars);
return null;
}
else if (ch == ":") {
return "operator";
} else {
stream.eatWhile(/[_\w\d]/);
if(stream.peek() == ":") {
return "variable-3";
} else {
var word = stream.current();
if(keywords.test(word)) {
return "meta";
}
if(ch >= "A" && ch <= "Z") {
return "comment";
} else {
return "keyword";
}
}
var word = stream.current();
if (ops.test(word))
return null;
else if (keywords.test(word))
return "meta";
else
return "variable";
}
}
function tokenLiteral(quote) {
return function(stream, state) {
var escaped = false, ch;
while ((ch = stream.next()) != null) {
if (ch == quote && !escaped) {
state.tokenize = tokenBase;
break;
}
escaped = !escaped && ch == "\\";
}
return "string";
};
}
function pushContext(state, type, col) {
state.context = {prev: state.context, indent: state.indent, col: col, type: type};
}
function popContext(state) {
state.indent = state.context.indent;
state.context = state.context.prev;
}
return {
startState: function() {
return {tokenize: tokenBase,
context: null,
indent: 0,
col: 0};
},
token: function(stream, state) {
if (stream.sol()) {
if (state.context && state.context.align == null) state.context.align = false;
state.indent = stream.indentation();
}
if (stream.eatSpace()) return null;
var style = state.tokenize(stream, state);
if (style != "comment" && state.context && state.context.align == null && state.context.type != "pattern") {
state.context.align = true;
}
if (curPunc == "(") pushContext(state, ")", stream.column());
else if (curPunc == "[") pushContext(state, "]", stream.column());
else if (curPunc == "{") pushContext(state, "}", stream.column());
else if (/[\]\}\)]/.test(curPunc)) {
while (state.context && state.context.type == "pattern") popContext(state);
if (state.context && curPunc == state.context.type) popContext(state);
}
else if (curPunc == "." && state.context && state.context.type == "pattern") popContext(state);
else if (/atom|string|variable/.test(style) && state.context) {
if (/[\}\]]/.test(state.context.type))
pushContext(state, "pattern", stream.column());
else if (state.context.type == "pattern" && !state.context.align) {
state.context.align = true;
state.context.col = stream.column();
}
}
return style;
},
indent: function(state, textAfter) {
var firstChar = textAfter && textAfter.charAt(0);
var context = state.context;
if (/[\]\}]/.test(firstChar))
while (context && context.type == "pattern") context = context.prev;
var closing = context && firstChar == context.type;
if (!context)
return 0;
else if (context.type == "pattern")
return context.col;
else if (context.align)
return context.col + (closing ? 0 : 1);
else
return context.indent + (closing ? 0 : indentUnit);
},
lineComment: "#"
};
});
CodeMirror.defineMIME("text/turtle", "turtle");
});