|
|
CodeMirror.defineMode("rust", function() {
|
|
|
var indentUnit = 4, altIndentUnit = 2;
|
|
|
var valKeywords = {
|
|
|
"if": "if-style", "while": "if-style", "else": "else-style",
|
|
|
"do": "else-style", "ret": "else-style", "fail": "else-style",
|
|
|
"break": "atom", "cont": "atom", "const": "let", "resource": "fn",
|
|
|
"let": "let", "fn": "fn", "for": "for", "alt": "alt", "iface": "iface",
|
|
|
"impl": "impl", "type": "type", "enum": "enum", "mod": "mod",
|
|
|
"as": "op", "true": "atom", "false": "atom", "assert": "op", "check": "op",
|
|
|
"claim": "op", "native": "ignore", "unsafe": "ignore", "import": "else-style",
|
|
|
"export": "else-style", "copy": "op", "log": "op", "log_err": "op",
|
|
|
"use": "op", "bind": "op", "self": "atom"
|
|
|
};
|
|
|
var typeKeywords = function() {
|
|
|
var keywords = {"fn": "fn", "block": "fn", "obj": "obj"};
|
|
|
var atoms = "bool uint int i8 i16 i32 i64 u8 u16 u32 u64 float f32 f64 str char".split(" ");
|
|
|
for (var i = 0, e = atoms.length; i < e; ++i) keywords[atoms[i]] = "atom";
|
|
|
return keywords;
|
|
|
}();
|
|
|
var operatorChar = /[+\-*&%=<>!?|\.@]/;
|
|
|
|
|
|
// Tokenizer
|
|
|
|
|
|
// Used as scratch variable to communicate multiple values without
|
|
|
// consing up tons of objects.
|
|
|
var tcat, content;
|
|
|
function r(tc, style) {
|
|
|
tcat = tc;
|
|
|
return style;
|
|
|
}
|
|
|
|
|
|
function tokenBase(stream, state) {
|
|
|
var ch = stream.next();
|
|
|
if (ch == '"') {
|
|
|
state.tokenize = tokenString;
|
|
|
return state.tokenize(stream, state);
|
|
|
}
|
|
|
if (ch == "'") {
|
|
|
tcat = "atom";
|
|
|
if (stream.eat("\\")) {
|
|
|
if (stream.skipTo("'")) { stream.next(); return "string"; }
|
|
|
else { return "error"; }
|
|
|
} else {
|
|
|
stream.next();
|
|
|
return stream.eat("'") ? "string" : "error";
|
|
|
}
|
|
|
}
|
|
|
if (ch == "/") {
|
|
|
if (stream.eat("/")) { stream.skipToEnd(); return "comment"; }
|
|
|
if (stream.eat("*")) {
|
|
|
state.tokenize = tokenComment(1);
|
|
|
return state.tokenize(stream, state);
|
|
|
}
|
|
|
}
|
|
|
if (ch == "#") {
|
|
|
if (stream.eat("[")) { tcat = "open-attr"; return null; }
|
|
|
stream.eatWhile(/\w/);
|
|
|
return r("macro", "meta");
|
|
|
}
|
|
|
if (ch == ":" && stream.match(":<")) {
|
|
|
return r("op", null);
|
|
|
}
|
|
|
if (ch.match(/\d/) || (ch == "." && stream.eat(/\d/))) {
|
|
|
var flp = false;
|
|
|
if (!stream.match(/^x[\da-f]+/i) && !stream.match(/^b[01]+/)) {
|
|
|
stream.eatWhile(/\d/);
|
|
|
if (stream.eat(".")) { flp = true; stream.eatWhile(/\d/); }
|
|
|
if (stream.match(/^e[+\-]?\d+/i)) { flp = true; }
|
|
|
}
|
|
|
if (flp) stream.match(/^f(?:32|64)/);
|
|
|
else stream.match(/^[ui](?:8|16|32|64)/);
|
|
|
return r("atom", "number");
|
|
|
}
|
|
|
if (ch.match(/[()\[\]{}:;,]/)) return r(ch, null);
|
|
|
if (ch == "-" && stream.eat(">")) return r("->", null);
|
|
|
if (ch.match(operatorChar)) {
|
|
|
stream.eatWhile(operatorChar);
|
|
|
return r("op", null);
|
|
|
}
|
|
|
stream.eatWhile(/\w/);
|
|
|
content = stream.current();
|
|
|
if (stream.match(/^::\w/)) {
|
|
|
stream.backUp(1);
|
|
|
return r("prefix", "variable-2");
|
|
|
}
|
|
|
if (state.keywords.propertyIsEnumerable(content))
|
|
|
return r(state.keywords[content], content.match(/true|false/) ? "atom" : "keyword");
|
|
|
return r("name", "variable");
|
|
|
}
|
|
|
|
|
|
function tokenString(stream, state) {
|
|
|
var ch, escaped = false;
|
|
|
while (ch = stream.next()) {
|
|
|
if (ch == '"' && !escaped) {
|
|
|
state.tokenize = tokenBase;
|
|
|
return r("atom", "string");
|
|
|
}
|
|
|
escaped = !escaped && ch == "\\";
|
|
|
}
|
|
|
// Hack to not confuse the parser when a string is split in
|
|
|
// pieces.
|
|
|
return r("op", "string");
|
|
|
}
|
|
|
|
|
|
function tokenComment(depth) {
|
|
|
return function(stream, state) {
|
|
|
var lastCh = null, ch;
|
|
|
while (ch = stream.next()) {
|
|
|
if (ch == "/" && lastCh == "*") {
|
|
|
if (depth == 1) {
|
|
|
state.tokenize = tokenBase;
|
|
|
break;
|
|
|
} else {
|
|
|
state.tokenize = tokenComment(depth - 1);
|
|
|
return state.tokenize(stream, state);
|
|
|
}
|
|
|
}
|
|
|
if (ch == "*" && lastCh == "/") {
|
|
|
state.tokenize = tokenComment(depth + 1);
|
|
|
return state.tokenize(stream, state);
|
|
|
}
|
|
|
lastCh = ch;
|
|
|
}
|
|
|
return "comment";
|
|
|
};
|
|
|
}
|
|
|
|
|
|
// Parser
|
|
|
|
|
|
var cx = {state: null, stream: null, marked: null, cc: null};
|
|
|
function pass() {
|
|
|
for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);
|
|
|
}
|
|
|
function cont() {
|
|
|
pass.apply(null, arguments);
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
function pushlex(type, info) {
|
|
|
var result = function() {
|
|
|
var state = cx.state;
|
|
|
state.lexical = {indented: state.indented, column: cx.stream.column(),
|
|
|
type: type, prev: state.lexical, info: info};
|
|
|
};
|
|
|
result.lex = true;
|
|
|
return result;
|
|
|
}
|
|
|
function poplex() {
|
|
|
var state = cx.state;
|
|
|
if (state.lexical.prev) {
|
|
|
if (state.lexical.type == ")")
|
|
|
state.indented = state.lexical.indented;
|
|
|
state.lexical = state.lexical.prev;
|
|
|
}
|
|
|
}
|
|
|
function typecx() { cx.state.keywords = typeKeywords; }
|
|
|
function valcx() { cx.state.keywords = valKeywords; }
|
|
|
poplex.lex = typecx.lex = valcx.lex = true;
|
|
|
|
|
|
function commasep(comb, end) {
|
|
|
function more(type) {
|
|
|
if (type == ",") return cont(comb, more);
|
|
|
if (type == end) return cont();
|
|
|
return cont(more);
|
|
|
}
|
|
|
return function(type) {
|
|
|
if (type == end) return cont();
|
|
|
return pass(comb, more);
|
|
|
};
|
|
|
}
|
|
|
|
|
|
function stat_of(comb, tag) {
|
|
|
return cont(pushlex("stat", tag), comb, poplex, block);
|
|
|
}
|
|
|
function block(type) {
|
|
|
if (type == "}") return cont();
|
|
|
if (type == "let") return stat_of(letdef1, "let");
|
|
|
if (type == "fn") return stat_of(fndef);
|
|
|
if (type == "type") return cont(pushlex("stat"), tydef, endstatement, poplex, block);
|
|
|
if (type == "enum") return stat_of(enumdef);
|
|
|
if (type == "mod") return stat_of(mod);
|
|
|
if (type == "iface") return stat_of(iface);
|
|
|
if (type == "impl") return stat_of(impl);
|
|
|
if (type == "open-attr") return cont(pushlex("]"), commasep(expression, "]"), poplex);
|
|
|
if (type == "ignore" || type.match(/[\]\);,]/)) return cont(block);
|
|
|
return pass(pushlex("stat"), expression, poplex, endstatement, block);
|
|
|
}
|
|
|
function endstatement(type) {
|
|
|
if (type == ";") return cont();
|
|
|
return pass();
|
|
|
}
|
|
|
function expression(type) {
|
|
|
if (type == "atom" || type == "name") return cont(maybeop);
|
|
|
if (type == "{") return cont(pushlex("}"), exprbrace, poplex);
|
|
|
if (type.match(/[\[\(]/)) return matchBrackets(type, expression);
|
|
|
if (type.match(/[\]\)\};,]/)) return pass();
|
|
|
if (type == "if-style") return cont(expression, expression);
|
|
|
if (type == "else-style" || type == "op") return cont(expression);
|
|
|
if (type == "for") return cont(pattern, maybetype, inop, expression, expression);
|
|
|
if (type == "alt") return cont(expression, altbody);
|
|
|
if (type == "fn") return cont(fndef);
|
|
|
if (type == "macro") return cont(macro);
|
|
|
return cont();
|
|
|
}
|
|
|
function maybeop(type) {
|
|
|
if (content == ".") return cont(maybeprop);
|
|
|
if (content == "::<"){return cont(typarams, maybeop);}
|
|
|
if (type == "op" || content == ":") return cont(expression);
|
|
|
if (type == "(" || type == "[") return matchBrackets(type, expression);
|
|
|
return pass();
|
|
|
}
|
|
|
function maybeprop(type) {
|
|
|
if (content.match(/^\w+$/)) {cx.marked = "variable"; return cont(maybeop);}
|
|
|
return pass(expression);
|
|
|
}
|
|
|
function exprbrace(type) {
|
|
|
if (type == "op") {
|
|
|
if (content == "|") return cont(blockvars, poplex, pushlex("}", "block"), block);
|
|
|
if (content == "||") return cont(poplex, pushlex("}", "block"), block);
|
|
|
}
|
|
|
if (content == "mutable" || (content.match(/^\w+$/) && cx.stream.peek() == ":"
|
|
|
&& !cx.stream.match("::", false)))
|
|
|
return pass(record_of(expression));
|
|
|
return pass(block);
|
|
|
}
|
|
|
function record_of(comb) {
|
|
|
function ro(type) {
|
|
|
if (content == "mutable" || content == "with") {cx.marked = "keyword"; return cont(ro);}
|
|
|
if (content.match(/^\w*$/)) {cx.marked = "variable"; return cont(ro);}
|
|
|
if (type == ":") return cont(comb, ro);
|
|
|
if (type == "}") return cont();
|
|
|
return cont(ro);
|
|
|
}
|
|
|
return ro;
|
|
|
}
|
|
|
function blockvars(type) {
|
|
|
if (type == "name") {cx.marked = "def"; return cont(blockvars);}
|
|
|
if (type == "op" && content == "|") return cont();
|
|
|
return cont(blockvars);
|
|
|
}
|
|
|
|
|
|
function letdef1(type) {
|
|
|
if (type.match(/[\]\)\};]/)) return cont();
|
|
|
if (content == "=") return cont(expression, letdef2);
|
|
|
if (type == ",") return cont(letdef1);
|
|
|
return pass(pattern, maybetype, letdef1);
|
|
|
}
|
|
|
function letdef2(type) {
|
|
|
if (type.match(/[\]\)\};,]/)) return pass(letdef1);
|
|
|
else return pass(expression, letdef2);
|
|
|
}
|
|
|
function maybetype(type) {
|
|
|
if (type == ":") return cont(typecx, rtype, valcx);
|
|
|
return pass();
|
|
|
}
|
|
|
function inop(type) {
|
|
|
if (type == "name" && content == "in") {cx.marked = "keyword"; return cont();}
|
|
|
return pass();
|
|
|
}
|
|
|
function fndef(type) {
|
|
|
if (content == "@" || content == "~") {cx.marked = "keyword"; return cont(fndef);}
|
|
|
if (type == "name") {cx.marked = "def"; return cont(fndef);}
|
|
|
if (content == "<") return cont(typarams, fndef);
|
|
|
if (type == "{") return pass(expression);
|
|
|
if (type == "(") return cont(pushlex(")"), commasep(argdef, ")"), poplex, fndef);
|
|
|
if (type == "->") return cont(typecx, rtype, valcx, fndef);
|
|
|
if (type == ";") return cont();
|
|
|
return cont(fndef);
|
|
|
}
|
|
|
function tydef(type) {
|
|
|
if (type == "name") {cx.marked = "def"; return cont(tydef);}
|
|
|
if (content == "<") return cont(typarams, tydef);
|
|
|
if (content == "=") return cont(typecx, rtype, valcx);
|
|
|
return cont(tydef);
|
|
|
}
|
|
|
function enumdef(type) {
|
|
|
if (type == "name") {cx.marked = "def"; return cont(enumdef);}
|
|
|
if (content == "<") return cont(typarams, enumdef);
|
|
|
if (content == "=") return cont(typecx, rtype, valcx, endstatement);
|
|
|
if (type == "{") return cont(pushlex("}"), typecx, enumblock, valcx, poplex);
|
|
|
return cont(enumdef);
|
|
|
}
|
|
|
function enumblock(type) {
|
|
|
if (type == "}") return cont();
|
|
|
if (type == "(") return cont(pushlex(")"), commasep(rtype, ")"), poplex, enumblock);
|
|
|
if (content.match(/^\w+$/)) cx.marked = "def";
|
|
|
return cont(enumblock);
|
|
|
}
|
|
|
function mod(type) {
|
|
|
if (type == "name") {cx.marked = "def"; return cont(mod);}
|
|
|
if (type == "{") return cont(pushlex("}"), block, poplex);
|
|
|
return pass();
|
|
|
}
|
|
|
function iface(type) {
|
|
|
if (type == "name") {cx.marked = "def"; return cont(iface);}
|
|
|
if (content == "<") return cont(typarams, iface);
|
|
|
if (type == "{") return cont(pushlex("}"), block, poplex);
|
|
|
return pass();
|
|
|
}
|
|
|
function impl(type) {
|
|
|
if (content == "<") return cont(typarams, impl);
|
|
|
if (content == "of" || content == "for") {cx.marked = "keyword"; return cont(rtype, impl);}
|
|
|
if (type == "name") {cx.marked = "def"; return cont(impl);}
|
|
|
if (type == "{") return cont(pushlex("}"), block, poplex);
|
|
|
return pass();
|
|
|
}
|
|
|
function typarams(type) {
|
|
|
if (content == ">") return cont();
|
|
|
if (content == ",") return cont(typarams);
|
|
|
if (content == ":") return cont(rtype, typarams);
|
|
|
return pass(rtype, typarams);
|
|
|
}
|
|
|
function argdef(type) {
|
|
|
if (type == "name") {cx.marked = "def"; return cont(argdef);}
|
|
|
if (type == ":") return cont(typecx, rtype, valcx);
|
|
|
return pass();
|
|
|
}
|
|
|
function rtype(type) {
|
|
|
if (type == "name") {cx.marked = "variable-3"; return cont(rtypemaybeparam); }
|
|
|
if (content == "mutable") {cx.marked = "keyword"; return cont(rtype);}
|
|
|
if (type == "atom") return cont(rtypemaybeparam);
|
|
|
if (type == "op" || type == "obj") return cont(rtype);
|
|
|
if (type == "fn") return cont(fntype);
|
|
|
if (type == "{") return cont(pushlex("{"), record_of(rtype), poplex);
|
|
|
return matchBrackets(type, rtype);
|
|
|
}
|
|
|
function rtypemaybeparam(type) {
|
|
|
if (content == "<") return cont(typarams);
|
|
|
return pass();
|
|
|
}
|
|
|
function fntype(type) {
|
|
|
if (type == "(") return cont(pushlex("("), commasep(rtype, ")"), poplex, fntype);
|
|
|
if (type == "->") return cont(rtype);
|
|
|
return pass();
|
|
|
}
|
|
|
function pattern(type) {
|
|
|
if (type == "name") {cx.marked = "def"; return cont(patternmaybeop);}
|
|
|
if (type == "atom") return cont(patternmaybeop);
|
|
|
if (type == "op") return cont(pattern);
|
|
|
if (type.match(/[\]\)\};,]/)) return pass();
|
|
|
return matchBrackets(type, pattern);
|
|
|
}
|
|
|
function patternmaybeop(type) {
|
|
|
if (type == "op" && content == ".") return cont();
|
|
|
if (content == "to") {cx.marked = "keyword"; return cont(pattern);}
|
|
|
else return pass();
|
|
|
}
|
|
|
function altbody(type) {
|
|
|
if (type == "{") return cont(pushlex("}", "alt"), altblock1, poplex);
|
|
|
return pass();
|
|
|
}
|
|
|
function altblock1(type) {
|
|
|
if (type == "}") return cont();
|
|
|
if (type == "|") return cont(altblock1);
|
|
|
if (content == "when") {cx.marked = "keyword"; return cont(expression, altblock2);}
|
|
|
if (type.match(/[\]\);,]/)) return cont(altblock1);
|
|
|
return pass(pattern, altblock2);
|
|
|
}
|
|
|
function altblock2(type) {
|
|
|
if (type == "{") return cont(pushlex("}", "alt"), block, poplex, altblock1);
|
|
|
else return pass(altblock1);
|
|
|
}
|
|
|
|
|
|
function macro(type) {
|
|
|
if (type.match(/[\[\(\{]/)) return matchBrackets(type, expression);
|
|
|
return pass();
|
|
|
}
|
|
|
function matchBrackets(type, comb) {
|
|
|
if (type == "[") return cont(pushlex("]"), commasep(comb, "]"), poplex);
|
|
|
if (type == "(") return cont(pushlex(")"), commasep(comb, ")"), poplex);
|
|
|
if (type == "{") return cont(pushlex("}"), commasep(comb, "}"), poplex);
|
|
|
return cont();
|
|
|
}
|
|
|
|
|
|
function parse(state, stream, style) {
|
|
|
var cc = state.cc;
|
|
|
// Communicate our context to the combinators.
|
|
|
// (Less wasteful than consing up a hundred closures on every call.)
|
|
|
cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc;
|
|
|
|
|
|
while (true) {
|
|
|
var combinator = cc.length ? cc.pop() : block;
|
|
|
if (combinator(tcat)) {
|
|
|
while(cc.length && cc[cc.length - 1].lex)
|
|
|
cc.pop()();
|
|
|
return cx.marked || style;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return {
|
|
|
startState: function() {
|
|
|
return {
|
|
|
tokenize: tokenBase,
|
|
|
cc: [],
|
|
|
lexical: {indented: -indentUnit, column: 0, type: "top", align: false},
|
|
|
keywords: valKeywords,
|
|
|
indented: 0
|
|
|
};
|
|
|
},
|
|
|
|
|
|
token: function(stream, state) {
|
|
|
if (stream.sol()) {
|
|
|
if (!state.lexical.hasOwnProperty("align"))
|
|
|
state.lexical.align = false;
|
|
|
state.indented = stream.indentation();
|
|
|
}
|
|
|
if (stream.eatSpace()) return null;
|
|
|
tcat = content = null;
|
|
|
var style = state.tokenize(stream, state);
|
|
|
if (style == "comment") return style;
|
|
|
if (!state.lexical.hasOwnProperty("align"))
|
|
|
state.lexical.align = true;
|
|
|
if (tcat == "prefix") return style;
|
|
|
if (!content) content = stream.current();
|
|
|
return parse(state, stream, style);
|
|
|
},
|
|
|
|
|
|
indent: function(state, textAfter) {
|
|
|
if (state.tokenize != tokenBase) return 0;
|
|
|
var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical,
|
|
|
type = lexical.type, closing = firstChar == type;
|
|
|
if (type == "stat") return lexical.indented + indentUnit;
|
|
|
if (lexical.align) return lexical.column + (closing ? 0 : 1);
|
|
|
return lexical.indented + (closing ? 0 : (lexical.info == "alt" ? altIndentUnit : indentUnit));
|
|
|
},
|
|
|
|
|
|
electricChars: "{}"
|
|
|
};
|
|
|
});
|
|
|
|
|
|
CodeMirror.defineMIME("text/x-rustsrc", "rust");
|
|
|
|
