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CodeMirror.defineMode("go", function(config, parserConfig) {
var indentUnit = config.indentUnit;
var keywords = {
"break":true, "case":true, "chan":true, "const":true, "continue":true,
"default":true, "defer":true, "else":true, "fallthrough":true, "for":true,
"func":true, "go":true, "goto":true, "if":true, "import":true,
"interface":true, "map":true, "package":true, "range":true, "return":true,
"select":true, "struct":true, "switch":true, "type":true, "var":true,
"bool":true, "byte":true, "complex64":true, "complex128":true,
"float32":true, "float64":true, "int8":true, "int16":true, "int32":true,
"int64":true, "string":true, "uint8":true, "uint16":true, "uint32":true,
"uint64":true, "int":true, "uint":true, "uintptr":true
};
var atoms = {
"true":true, "false":true, "iota":true, "nil":true, "append":true,
"cap":true, "close":true, "complex":true, "copy":true, "imag":true,
"len":true, "make":true, "new":true, "panic":true, "print":true,
"println":true, "real":true, "recover":true
};
var blockKeywords = {
"else":true, "for":true, "func":true, "if":true, "interface":true,
"select":true, "struct":true, "switch":true
};
var isOperatorChar = /[+\-*&^%:=<>!|\/]/;
var curPunc;
function tokenBase(stream, state) {
var ch = stream.next();
if (ch == '"' || ch == "'" || ch == "`") {
state.tokenize = tokenString(ch);
return state.tokenize(stream, state);
}
if (/[\d\.]/.test(ch)) {
if (ch == ".") {
stream.match(/^[0-9]+([eE][\-+]?[0-9]+)?/);
} else if (ch == "0") {
stream.match(/^[xX][0-9a-fA-F]+/) || stream.match(/^0[0-7]+/);
} else {
stream.match(/^[0-9]*\.?[0-9]*([eE][\-+]?[0-9]+)?/);
}
return "number";
}
if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
curPunc = ch;
return null
}
if (ch == "/") {
if (stream.eat("*")) {
state.tokenize = tokenComment;
return tokenComment(stream, state);
}
if (stream.eat("/")) {
stream.skipToEnd();
return "comment";
}
}
if (isOperatorChar.test(ch)) {
stream.eatWhile(isOperatorChar);
return "operator";
}
stream.eatWhile(/[\w\$_]/);
var cur = stream.current();
if (keywords.propertyIsEnumerable(cur)) {
if (cur == "case" || cur == "default") curPunc = "case";
return "keyword";
}
if (atoms.propertyIsEnumerable(cur)) return "atom";
return "word";
}
function tokenString(quote) {
return function(stream, state) {
var escaped = false, next, end = false;
while ((next = stream.next()) != null) {
if (next == quote && !escaped) {end = true; break;}
escaped = !escaped && next == "\\";
}
if (end || !(escaped || quote == "`"))
state.tokenize = tokenBase;
return "string";
};
}
function tokenComment(stream, state) {
var maybeEnd = false, ch;
while (ch = stream.next()) {
if (ch == "/" && maybeEnd) {
state.tokenize = tokenBase;
break;
}
maybeEnd = (ch == "*");
}
return "comment";
}
function Context(indented, column, type, align, prev) {
this.indented = indented;
this.column = column;
this.type = type;
this.align = align;
this.prev = prev;
}
function pushContext(state, col, type) {
return state.context = new Context(state.indented, col, type, null, state.context);
}
function popContext(state) {
var t = state.context.type;
if (t == ")" || t == "]" || t == "}")
state.indented = state.context.indented;
return state.context = state.context.prev;
}
// Interface
return {
startState: function(basecolumn) {
return {
tokenize: null,
context: new Context((basecolumn || 0) - indentUnit, 0, "top", false),
indented: 0,
startOfLine: true
};
},
token: function(stream, state) {
var ctx = state.context;
if (stream.sol()) {
if (ctx.align == null) ctx.align = false;
state.indented = stream.indentation();
state.startOfLine = true;
if (ctx.type == "case") ctx.type = "}";
}
if (stream.eatSpace()) return null;
curPunc = null;
var style = (state.tokenize || tokenBase)(stream, state);
if (style == "comment") return style;
if (ctx.align == null) ctx.align = true;
if (curPunc == "{") pushContext(state, stream.column(), "}");
else if (curPunc == "[") pushContext(state, stream.column(), "]");
else if (curPunc == "(") pushContext(state, stream.column(), ")");
else if (curPunc == "case") ctx.type = "case"
else if (curPunc == "}" && ctx.type == "}") ctx = popContext(state);
else if (curPunc == ctx.type) popContext(state);
state.startOfLine = false;
return style;
},
indent: function(state, textAfter) {
if (state.tokenize != tokenBase && state.tokenize != null) return 0;
var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);
if (ctx.type == "case" && /^(?:case|default)\b/.test(textAfter)) {
state.context.type = "}";
return ctx.indented;
}
var closing = firstChar == ctx.type;
if (ctx.align) return ctx.column + (closing ? 0 : 1);
else return ctx.indented + (closing ? 0 : indentUnit);
},
electricChars: "{}:"
};
});
CodeMirror.defineMIME("text/x-go", "go");
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