S2OJ/uoj/1/js/codemirror/mode/verilog/verilog.js
2018-09-20 17:21:40 +08:00

360 lines
12 KiB
JavaScript

// 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("verilog", function(config, parserConfig) {
var indentUnit = config.indentUnit,
statementIndentUnit = parserConfig.statementIndentUnit || indentUnit,
dontAlignCalls = parserConfig.dontAlignCalls,
noIndentKeywords = parserConfig.noIndentKeywords || [],
multiLineStrings = parserConfig.multiLineStrings;
function words(str) {
var obj = {}, words = str.split(" ");
for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
return obj;
}
/**
* Keywords from IEEE 1800-2012
*/
var keywords = words(
"accept_on alias always always_comb always_ff always_latch and assert assign assume automatic before begin bind " +
"bins binsof bit break buf bufif0 bufif1 byte case casex casez cell chandle checker class clocking cmos config " +
"const constraint context continue cover covergroup coverpoint cross deassign default defparam design disable " +
"dist do edge else end endcase endchecker endclass endclocking endconfig endfunction endgenerate endgroup " +
"endinterface endmodule endpackage endprimitive endprogram endproperty endspecify endsequence endtable endtask " +
"enum event eventually expect export extends extern final first_match for force foreach forever fork forkjoin " +
"function generate genvar global highz0 highz1 if iff ifnone ignore_bins illegal_bins implements implies import " +
"incdir include initial inout input inside instance int integer interconnect interface intersect join join_any " +
"join_none large let liblist library local localparam logic longint macromodule matches medium modport module " +
"nand negedge nettype new nexttime nmos nor noshowcancelled not notif0 notif1 null or output package packed " +
"parameter pmos posedge primitive priority program property protected pull0 pull1 pulldown pullup " +
"pulsestyle_ondetect pulsestyle_onevent pure rand randc randcase randsequence rcmos real realtime ref reg " +
"reject_on release repeat restrict return rnmos rpmos rtran rtranif0 rtranif1 s_always s_eventually s_nexttime " +
"s_until s_until_with scalared sequence shortint shortreal showcancelled signed small soft solve specify " +
"specparam static string strong strong0 strong1 struct super supply0 supply1 sync_accept_on sync_reject_on " +
"table tagged task this throughout time timeprecision timeunit tran tranif0 tranif1 tri tri0 tri1 triand trior " +
"trireg type typedef union unique unique0 unsigned until until_with untyped use uwire var vectored virtual void " +
"wait wait_order wand weak weak0 weak1 while wildcard wire with within wor xnor xor");
/** Operators from IEEE 1800-2012
unary_operator ::=
+ | - | ! | ~ | & | ~& | | | ~| | ^ | ~^ | ^~
binary_operator ::=
+ | - | * | / | % | == | != | === | !== | ==? | !=? | && | || | **
| < | <= | > | >= | & | | | ^ | ^~ | ~^ | >> | << | >>> | <<<
| -> | <->
inc_or_dec_operator ::= ++ | --
unary_module_path_operator ::=
! | ~ | & | ~& | | | ~| | ^ | ~^ | ^~
binary_module_path_operator ::=
== | != | && | || | & | | | ^ | ^~ | ~^
*/
var isOperatorChar = /[\+\-\*\/!~&|^%=?:]/;
var isBracketChar = /[\[\]{}()]/;
var unsignedNumber = /\d[0-9_]*/;
var decimalLiteral = /\d*\s*'s?d\s*\d[0-9_]*/i;
var binaryLiteral = /\d*\s*'s?b\s*[xz01][xz01_]*/i;
var octLiteral = /\d*\s*'s?o\s*[xz0-7][xz0-7_]*/i;
var hexLiteral = /\d*\s*'s?h\s*[0-9a-fxz?][0-9a-fxz?_]*/i;
var realLiteral = /(\d[\d_]*(\.\d[\d_]*)?E-?[\d_]+)|(\d[\d_]*\.\d[\d_]*)/i;
var closingBracketOrWord = /^((\w+)|[)}\]])/;
var closingBracket = /[)}\]]/;
var curPunc;
var curKeyword;
// Block openings which are closed by a matching keyword in the form of ("end" + keyword)
// E.g. "task" => "endtask"
var blockKeywords = words(
"case checker class clocking config function generate group interface module package" +
"primitive program property specify sequence table task"
);
// Opening/closing pairs
var openClose = {};
for (var keyword in blockKeywords) {
openClose[keyword] = "end" + keyword;
}
openClose["begin"] = "end";
openClose["casex"] = "endcase";
openClose["casez"] = "endcase";
openClose["do" ] = "while";
openClose["fork" ] = "join;join_any;join_none";
// This is a bit of a hack but will work to not indent after import/epxort statements
// as long as the function/task name is on the same line
openClose["import"] = "function;task";
openClose["export"] = "function;task";
for (var i in noIndentKeywords) {
var keyword = noIndentKeywords[i];
if (openClose[keyword]) {
openClose[keyword] = undefined;
}
}
var statementKeywords = words("always always_comb always_ff always_latch assert assign assume else for foreach forever if initial repeat while");
function tokenBase(stream, state) {
var ch = stream.peek();
if (/[,;:\.]/.test(ch)) {
curPunc = stream.next();
return null;
}
if (isBracketChar.test(ch)) {
curPunc = stream.next();
return "bracket";
}
// Macros (tick-defines)
if (ch == '`') {
stream.next();
if (stream.eatWhile(/[\w\$_]/)) {
return "def";
} else {
return null;
}
}
// System calls
if (ch == '$') {
stream.next();
if (stream.eatWhile(/[\w\$_]/)) {
return "meta";
} else {
return null;
}
}
// Time literals
if (ch == '#') {
stream.next();
stream.eatWhile(/[\d_.]/);
return "def";
}
// Strings
if (ch == '"') {
stream.next();
state.tokenize = tokenString(ch);
return state.tokenize(stream, state);
}
// Comments
if (ch == "/") {
stream.next();
if (stream.eat("*")) {
state.tokenize = tokenComment;
return tokenComment(stream, state);
}
if (stream.eat("/")) {
stream.skipToEnd();
return "comment";
}
stream.backUp(1);
}
// Numeric literals
if (stream.match(realLiteral) ||
stream.match(decimalLiteral) ||
stream.match(binaryLiteral) ||
stream.match(octLiteral) ||
stream.match(hexLiteral) ||
stream.match(unsignedNumber) ||
stream.match(realLiteral)) {
return "number";
}
// Operators
if (stream.eatWhile(isOperatorChar)) {
return "meta";
}
// Keywords / plain variables
if (stream.eatWhile(/[\w\$_]/)) {
var cur = stream.current();
if (keywords[cur]) {
if (openClose[cur]) {
curPunc = "newblock";
}
if (statementKeywords[cur]) {
curPunc = "newstatement";
}
curKeyword = cur;
return "keyword";
}
return "variable";
}
stream.next();
return null;
}
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) {
var indent = state.indented;
var c = new Context(indent, col, type, null, state.context);
return state.context = c;
}
function popContext(state) {
var t = state.context.type;
if (t == ")" || t == "]" || t == "}") {
state.indented = state.context.indented;
}
return state.context = state.context.prev;
}
function isClosing(text, contextClosing) {
if (text == contextClosing) {
return true;
} else {
// contextClosing may be mulitple keywords separated by ;
var closingKeywords = contextClosing.split(";");
for (var i in closingKeywords) {
if (text == closingKeywords[i]) {
return true;
}
}
return false;
}
}
function buildElectricInputRegEx() {
// Reindentation should occur on any bracket char: {}()[]
// or on a match of any of the block closing keywords, at
// the end of a line
var allClosings = [];
for (var i in openClose) {
if (openClose[i]) {
var closings = openClose[i].split(";");
for (var j in closings) {
allClosings.push(closings[j]);
}
}
}
var re = new RegExp("[{}()\\[\\]]|(" + allClosings.join("|") + ")$");
return re;
}
// Interface
return {
// Regex to force current line to reindent
electricInput: buildElectricInputRegEx(),
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;
curKeyword = null;
var style = (state.tokenize || tokenBase)(stream, state);
if (style == "comment" || style == "meta" || style == "variable") return style;
if (ctx.align == null) ctx.align = true;
if (curPunc == ctx.type) {
popContext(state);
}
else if ((curPunc == ";" && ctx.type == "statement") ||
(ctx.type && isClosing(curKeyword, ctx.type))) {
ctx = popContext(state);
while (ctx && ctx.type == "statement") ctx = 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 (ctx && ctx.type == "endcase" && curPunc == ":") { pushContext(state, stream.column(), "statement"); }
else if (curPunc == "newstatement") {
pushContext(state, stream.column(), "statement");
} else if (curPunc == "newblock") {
var close = openClose[curKeyword];
pushContext(state, stream.column(), close);
}
state.startOfLine = false;
return style;
},
indent: function(state, textAfter) {
if (state.tokenize != tokenBase && state.tokenize != null) return CodeMirror.Pass;
var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);
if (ctx.type == "statement" && firstChar == "}") ctx = ctx.prev;
var closing = false;
var possibleClosing = textAfter.match(closingBracketOrWord);
if (possibleClosing) {
closing = isClosing(possibleClosing[0], ctx.type);
}
if (ctx.type == "statement") return ctx.indented + (firstChar == "{" ? 0 : statementIndentUnit);
else if (closingBracket.test(ctx.type) && ctx.align && !dontAlignCalls) return ctx.column + (closing ? 0 : 1);
else if (ctx.type == ")" && !closing) return ctx.indented + statementIndentUnit;
else return ctx.indented + (closing ? 0 : indentUnit);
},
blockCommentStart: "/*",
blockCommentEnd: "*/",
lineComment: "//"
};
});
CodeMirror.defineMIME("text/x-verilog", {
name: "verilog"
});
CodeMirror.defineMIME("text/x-systemverilog", {
name: "systemverilog"
});
});