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