// 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,
hooks = parserConfig.hooks || {};
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 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";
openClose["covergroup"] = "endgroup";
for (var i in noIndentKeywords) {
var keyword = noIndentKeywords[i];
if (openClose[keyword]) {
openClose[keyword] = undefined;
}
}
// Keywords which open statements that are ended with a semi-colon
var statementKeywords = words("always always_comb always_ff always_latch assert assign assume else export for foreach forever if import initial repeat while");
function tokenBase(stream, state) {
var ch = stream.peek(), style;
if (hooks[ch] && (style = hooks[ch](stream, state)) != false) return style;
if (hooks.tokenBase && (style = hooks.tokenBase(stream, state)) != false)
return style;
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 multiple 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) {
var state = {
tokenize: null,
context: new Context((basecolumn || 0) - indentUnit, 0, "top", false),
indented: 0,
startOfLine: true
};
if (hooks.startState) hooks.startState(state);
return state;
},
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 (hooks.token) {
// Call hook, with an optional return value of a style to override verilog styling.
var style = hooks.token(stream, state);
if (style !== undefined) {
return style;
}
}
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") {
if (curKeyword == "function" && ctx && (ctx.type == "statement" || ctx.type == "endgroup")) {
// The 'function' keyword can appear in some other contexts where it actually does not
// indicate a function (import/export DPI and covergroup definitions).
// Do nothing in this case
} else if (curKeyword == "task" && ctx && ctx.type == "statement") {
// Same thing for task
} else {
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;
if (hooks.indent) {
var fromHook = hooks.indent(state);
if (fromHook >= 0) return fromHook;
}
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: "verilog"
});
// TL-Verilog mode.
// See tl-x.org for language spec.
// See the mode in action at makerchip.com.
// Contact: steve.hoover@redwoodeda.com
// TLV Identifier prefixes.
// Note that sign is not treated separately, so "+/-" versions of numeric identifiers
// are included.
var tlvIdentifierStyle = {
"|": "link",
">": "property", // Should condition this off for > TLV 1c.
"$": "variable",
"$$": "variable",
"?$": "qualifier",
"?*": "qualifier",
"-": "hr",
"/": "property",
"/-": "property",
"@": "variable-3",
"@-": "variable-3",
"@++": "variable-3",
"@+=": "variable-3",
"@+=-": "variable-3",
"@--": "variable-3",
"@-=": "variable-3",
"%+": "tag",
"%-": "tag",
"%": "tag",
">>": "tag",
"<<": "tag",
"<>": "tag",
"#": "tag", // Need to choose a style for this.
"^": "attribute",
"^^": "attribute",
"^!": "attribute",
"*": "variable-2",
"**": "variable-2",
"\\": "keyword",
"\"": "comment"
};
// Lines starting with these characters define scope (result in indentation).
var tlvScopePrefixChars = {
"/": "beh-hier",
">": "beh-hier",
"-": "phys-hier",
"|": "pipe",
"?": "when",
"@": "stage",
"\\": "keyword"
};
var tlvIndentUnit = 3;
var tlvTrackStatements = false;
var tlvIdentMatch = /^([~!@#\$%\^&\*-\+=\?\/\\\|'"<>]+)([\d\w_]*)/; // Matches an identifiere.
// Note that ':' is excluded, because of it's use in [:].
var tlvFirstLevelIndentMatch = /^[! ] /;
var tlvLineIndentationMatch = /^[! ] */;
var tlvCommentMatch = /^\/[\/\*]/;
// Returns a style specific to the scope at the given indentation column.
// Type is one of: "indent", "scope-ident", "before-scope-ident".
function tlvScopeStyle(state, indentation, type) {
// Begin scope.
var depth = indentation / tlvIndentUnit; // TODO: Pass this in instead.
return "tlv-" + state.tlvIndentationStyle[depth] + "-" + type;
}
// Return true if the next thing in the stream is an identifier with a mnemonic.
function tlvIdentNext(stream) {
var match;
return (match = stream.match(tlvIdentMatch, false)) && match[2].length > 0;
}
CodeMirror.defineMIME("text/x-tlv", {
name: "verilog",
hooks: {
electricInput: false,
// Return undefined for verilog tokenizing, or style for TLV token (null not used).
// Standard CM styles are used for most formatting, but some TL-Verilog-specific highlighting
// can be enabled with the definition of cm-tlv-* styles, including highlighting for:
// - M4 tokens
// - TLV scope indentation
// - Statement delimitation (enabled by tlvTrackStatements)
token: function(stream, state) {
var style = undefined;
var match; // Return value of pattern matches.
// Set highlighting mode based on code region (TLV or SV).
if (stream.sol() && ! state.tlvInBlockComment) {
// Process region.
if (stream.peek() == '\\') {
style = "def";
stream.skipToEnd();
if (stream.string.match(/\\SV/)) {
state.tlvCodeActive = false;
} else if (stream.string.match(/\\TLV/)){
state.tlvCodeActive = true;
}
}
// Correct indentation in the face of a line prefix char.
if (state.tlvCodeActive && stream.pos == 0 &&
(state.indented == 0) && (match = stream.match(tlvLineIndentationMatch, false))) {
state.indented = match[0].length;
}
// Compute indentation state:
// o Auto indentation on next line
// o Indentation scope styles
var indented = state.indented;
var depth = indented / tlvIndentUnit;
if (depth <= state.tlvIndentationStyle.length) {
// not deeper than current scope
var blankline = stream.string.length == indented;
var chPos = depth * tlvIndentUnit;
if (chPos < stream.string.length) {
var bodyString = stream.string.slice(chPos);
var ch = bodyString[0];
if (tlvScopePrefixChars[ch] && ((match = bodyString.match(tlvIdentMatch)) &&
tlvIdentifierStyle[match[1]])) {
// This line begins scope.
// Next line gets indented one level.
indented += tlvIndentUnit;
// Style the next level of indentation (except non-region keyword identifiers,
// which are statements themselves)
if (!(ch == "\\" && chPos > 0)) {
state.tlvIndentationStyle[depth] = tlvScopePrefixChars[ch];
if (tlvTrackStatements) {state.statementComment = false;}
depth++;
}
}
}
// Clear out deeper indentation levels unless line is blank.
if (!blankline) {
while (state.tlvIndentationStyle.length > depth) {
state.tlvIndentationStyle.pop();
}
}
}
// Set next level of indentation.
state.tlvNextIndent = indented;
}
if (state.tlvCodeActive) {
// Highlight as TLV.
var beginStatement = false;
if (tlvTrackStatements) {
// This starts a statement if the position is at the scope level
// and we're not within a statement leading comment.
beginStatement =
(stream.peek() != " ") && // not a space
(style === undefined) && // not a region identifier
!state.tlvInBlockComment && // not in block comment
//!stream.match(tlvCommentMatch, false) && // not comment start
(stream.column() == state.tlvIndentationStyle.length * tlvIndentUnit); // at scope level
if (beginStatement) {
if (state.statementComment) {
// statement already started by comment
beginStatement = false;
}
state.statementComment =
stream.match(tlvCommentMatch, false); // comment start
}
}
var match;
if (style !== undefined) {
// Region line.
style += " " + tlvScopeStyle(state, 0, "scope-ident")
} else if (((stream.pos / tlvIndentUnit) < state.tlvIndentationStyle.length) &&
(match = stream.match(stream.sol() ? tlvFirstLevelIndentMatch : /^ /))) {
// Indentation
style = // make this style distinct from the previous one to prevent
// codemirror from combining spans
"tlv-indent-" + (((stream.pos % 2) == 0) ? "even" : "odd") +
// and style it
" " + tlvScopeStyle(state, stream.pos - tlvIndentUnit, "indent");
// Style the line prefix character.
if (match[0].charAt(0) == "!") {
style += " tlv-alert-line-prefix";
}
// Place a class before a scope identifier.
if (tlvIdentNext(stream)) {
style += " " + tlvScopeStyle(state, stream.pos, "before-scope-ident");
}
} else if (state.tlvInBlockComment) {
// In a block comment.
if (stream.match(/^.*?\*\//)) {
// Exit block comment.
state.tlvInBlockComment = false;
if (tlvTrackStatements && !stream.eol()) {
// Anything after comment is assumed to be real statement content.
state.statementComment = false;
}
} else {
stream.skipToEnd();
}
style = "comment";
} else if ((match = stream.match(tlvCommentMatch)) && !state.tlvInBlockComment) {
// Start comment.
if (match[0] == "//") {
// Line comment.
stream.skipToEnd();
} else {
// Block comment.
state.tlvInBlockComment = true;
}
style = "comment";
} else if (match = stream.match(tlvIdentMatch)) {
// looks like an identifier (or identifier prefix)
var prefix = match[1];
var mnemonic = match[2];
if (// is identifier prefix
(prefix in tlvIdentifierStyle) &&
// has mnemonic or we're at the end of the line (maybe it hasn't been typed yet)
(mnemonic.length > 0 || stream.eol())) {
style = tlvIdentifierStyle[prefix];
if (stream.column() == state.indented) {
// Begin scope.
style += " " + tlvScopeStyle(state, stream.column(), "scope-ident")
}
} else {
// Just swallow one character and try again.
// This enables subsequent identifier match with preceding symbol character, which
// is legal within a statement. (Eg, !$reset). It also enables detection of
// comment start with preceding symbols.
stream.backUp(stream.current().length - 1);
style = "tlv-default";
}
} else if (stream.match(/^\t+/)) {
// Highlight tabs, which are illegal.
style = "tlv-tab";
} else if (stream.match(/^[\[\]{}\(\);\:]+/)) {
// [:], (), {}, ;.
style = "meta";
} else if (match = stream.match(/^[mM]4([\+_])?[\w\d_]*/)) {
// m4 pre proc
style = (match[1] == "+") ? "tlv-m4-plus" : "tlv-m4";
} else if (stream.match(/^ +/)){
// Skip over spaces.
if (stream.eol()) {
// Trailing spaces.
style = "error";
} else {
// Non-trailing spaces.
style = "tlv-default";
}
} else if (stream.match(/^[\w\d_]+/)) {
// alpha-numeric token.
style = "number";
} else {
// Eat the next char w/ no formatting.
stream.next();
style = "tlv-default";
}
if (beginStatement) {
style += " tlv-statement";
}
} else {
if (stream.match(/^[mM]4([\w\d_]*)/)) {
// m4 pre proc
style = "tlv-m4";
}
}
return style;
},
indent: function(state) {
return (state.tlvCodeActive == true) ? state.tlvNextIndent : -1;
},
startState: function(state) {
state.tlvIndentationStyle = []; // Styles to use for each level of indentation.
state.tlvCodeActive = true; // True when we're in a TLV region (and at beginning of file).
state.tlvNextIndent = -1; // The number of spaces to autoindent the next line if tlvCodeActive.
state.tlvInBlockComment = false; // True inside /**/ comment.
if (tlvTrackStatements) {
state.statementComment = false; // True inside a statement's header comment.
}
}
}
});
});