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CodeMirror.defineMode("verilog", function(config, parserConfig) {
var indentUnit = config.indentUnit,
keywords = parserConfig.keywords || {},
blockKeywords = parserConfig.blockKeywords || {},
atoms = parserConfig.atoms || {},
hooks = parserConfig.hooks || {},
multiLineStrings = parserConfig.multiLineStrings;
var isOperatorChar = /[&|~><!\)\(*#%@+\/=?\:;}{,\.\^\-\[\]]/;
var curPunc;
function tokenBase(stream, state) {
var ch = stream.next();
if (hooks[ch]) {
var result = hooks[ch](stream, state);
if (result !== false) return result;
}
if (ch == '"') {
state.tokenize = tokenString(ch);
return state.tokenize(stream, state);
}
if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
curPunc = ch;
return null
}
if (/[\d']/.test(ch)) {
stream.eatWhile(/[\w\.']/);
return "number";
}
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 (blockKeywords.propertyIsEnumerable(cur)) curPunc = "newstatement";
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 || multiLineStrings))
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 (stream.eatSpace()) return null;
curPunc = null;
var style = (state.tokenize || tokenBase)(stream, state);
if (style == "comment" || style == "meta") return style;
if (ctx.align == null) ctx.align = true;
if ((curPunc == ";" || curPunc == ":") && ctx.type == "statement") popContext(state);
else if (curPunc == "{") pushContext(state, stream.column(), "}");
else if (curPunc == "[") pushContext(state, stream.column(), "]");
else if (curPunc == "(") pushContext(state, stream.column(), ")");
else if (curPunc == "}") {
while (ctx.type == "statement") ctx = popContext(state);
if (ctx.type == "}") ctx = popContext(state);
while (ctx.type == "statement") ctx = popContext(state);
}
else if (curPunc == ctx.type) popContext(state);
else if (ctx.type == "}" || ctx.type == "top" || (ctx.type == "statement" && curPunc == "newstatement"))
pushContext(state, stream.column(), "statement");
state.startOfLine = false;
return style;
},
indent: function(state, textAfter) {
if (state.tokenize != tokenBase && state.tokenize != null) return 0;
var firstChar = textAfter && textAfter.charAt(0), ctx = state.context, closing = firstChar == ctx.type;
if (ctx.type == "statement") return ctx.indented + (firstChar == "{" ? 0 : indentUnit);
else if (ctx.align) return ctx.column + (closing ? 0 : 1);
else return ctx.indented + (closing ? 0 : indentUnit);
},
electricChars: "{}"
};
});
(function() {
function words(str) {
var obj = {}, words = str.split(" ");
for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
return obj;
}
var verilogKeywords = "always and assign automatic begin buf bufif0 bufif1 case casex casez cell cmos config " +
"deassign default defparam design disable edge else end endcase endconfig endfunction endgenerate endmodule " +
"endprimitive endspecify endtable endtask event for force forever fork function generate genvar highz0 " +
"highz1 if ifnone incdir include initial inout input instance integer join large liblist library localparam " +
"macromodule medium module nand negedge nmos nor noshowcancelled not notif0 notif1 or output parameter pmos " +
"posedge primitive pull0 pull1 pulldown pullup pulsestyle_onevent pulsestyle_ondetect rcmos real realtime " +
"reg release repeat rnmos rpmos rtran rtranif0 rtranif1 scalared showcancelled signed small specify specparam " +
"strong0 strong1 supply0 supply1 table task time tran tranif0 tranif1 tri tri0 tri1 triand trior trireg " +
"unsigned use vectored wait wand weak0 weak1 while wire wor xnor xor";
var verilogBlockKeywords = "begin bufif0 bufif1 case casex casez config else end endcase endconfig endfunction " +
"endgenerate endmodule endprimitive endspecify endtable endtask for forever function generate if ifnone " +
"macromodule module primitive repeat specify table task while";
function metaHook(stream, state) {
stream.eatWhile(/[\w\$_]/);
return "meta";
}
// C#-style strings where "" escapes a quote.
function tokenAtString(stream, state) {
var next;
while ((next = stream.next()) != null) {
if (next == '"' && !stream.eat('"')) {
state.tokenize = null;
break;
}
}
return "string";
}
CodeMirror.defineMIME("text/x-verilog", {
name: "verilog",
keywords: words(verilogKeywords),
blockKeywords: words(verilogBlockKeywords),
atoms: words("null"),
hooks: {"`": metaHook, "$": metaHook}
});
}());
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