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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("elm", function() {
function switchState(source, setState, f) {
setState(f);
return f(source, setState);
}
// These should all be Unicode extended, as per the Haskell 2010 report
var smallRE = /[a-z_]/;
var largeRE = /[A-Z]/;
var digitRE = /[0-9]/;
var hexitRE = /[0-9A-Fa-f]/;
var octitRE = /[0-7]/;
var idRE = /[a-z_A-Z0-9\']/;
var symbolRE = /[-!#$%&*+.\/<=>?@\\^|~:\u03BB\u2192]/;
var specialRE = /[(),;[\]`{}]/;
var whiteCharRE = /[ \t\v\f]/; // newlines are handled in tokenizer
function normal() {
return function (source, setState) {
if (source.eatWhile(whiteCharRE)) {
return null;
}
var ch = source.next();
if (specialRE.test(ch)) {
if (ch == '{' && source.eat('-')) {
var t = "comment";
if (source.eat('#')) t = "meta";
return switchState(source, setState, ncomment(t, 1));
}
return null;
}
if (ch == '\'') {
if (source.eat('\\'))
source.next(); // should handle other escapes here
else
source.next();
if (source.eat('\''))
return "string";
return "error";
}
if (ch == '"') {
return switchState(source, setState, stringLiteral);
}
if (largeRE.test(ch)) {
source.eatWhile(idRE);
if (source.eat('.'))
return "qualifier";
return "variable-2";
}
if (smallRE.test(ch)) {
var isDef = source.pos === 1;
source.eatWhile(idRE);
return isDef ? "variable-3" : "variable";
}
if (digitRE.test(ch)) {
if (ch == '0') {
if (source.eat(/[xX]/)) {
source.eatWhile(hexitRE); // should require at least 1
return "integer";
}
if (source.eat(/[oO]/)) {
source.eatWhile(octitRE); // should require at least 1
return "number";
}
}
source.eatWhile(digitRE);
var t = "number";
if (source.eat('.')) {
t = "number";
source.eatWhile(digitRE); // should require at least 1
}
if (source.eat(/[eE]/)) {
t = "number";
source.eat(/[-+]/);
source.eatWhile(digitRE); // should require at least 1
}
return t;
}
if (symbolRE.test(ch)) {
if (ch == '-' && source.eat(/-/)) {
source.eatWhile(/-/);
if (!source.eat(symbolRE)) {
source.skipToEnd();
return "comment";
}
}
source.eatWhile(symbolRE);
return "builtin";
}
return "error";
}
}
function ncomment(type, nest) {
if (nest == 0) {
return normal();
}
return function(source, setState) {
var currNest = nest;
while (!source.eol()) {
var ch = source.next();
if (ch == '{' && source.eat('-')) {
++currNest;
} else if (ch == '-' && source.eat('}')) {
--currNest;
if (currNest == 0) {
setState(normal());
return type;
}
}
}
setState(ncomment(type, currNest));
return type;
}
}
function stringLiteral(source, setState) {
while (!source.eol()) {
var ch = source.next();
if (ch == '"') {
setState(normal());
return "string";
}
if (ch == '\\') {
if (source.eol() || source.eat(whiteCharRE)) {
setState(stringGap);
return "string";
}
if (!source.eat('&')) source.next(); // should handle other escapes here
}
}
setState(normal());
return "error";
}
function stringGap(source, setState) {
if (source.eat('\\')) {
return switchState(source, setState, stringLiteral);
}
source.next();
setState(normal());
return "error";
}
var wellKnownWords = (function() {
var wkw = {};
var keywords = [
"case", "of", "as",
"if", "then", "else",
"let", "in",
"infix", "infixl", "infixr",
"type", "alias",
"input", "output", "foreign", "loopback",
"module", "where", "import", "exposing",
"_", "..", "|", ":", "=", "\\", "\"", "->", "<-"
];
for (var i = keywords.length; i--;)
wkw[keywords[i]] = "keyword";
return wkw;
})();
return {
startState: function () { return { f: normal() }; },
copyState: function (s) { return { f: s.f }; },
token: function(stream, state) {
var t = state.f(stream, function(s) { state.f = s; });
var w = stream.current();
return (wellKnownWords.hasOwnProperty(w)) ? wellKnownWords[w] : t;
}
};
});
CodeMirror.defineMIME("text/x-elm", "elm");
});
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