diff --git a/doc/tutorial/build.js b/doc/tutorial/build.js index 7318b2a0400..308954b0be9 100644 --- a/doc/tutorial/build.js +++ b/doc/tutorial/build.js @@ -1,4 +1,22 @@ var fs = require("fs"), md = require("./lib/markdown"); +CodeMirror = require("./lib/codemirror-node"); +require("./lib/codemirror-rust"); + +md.Markdown.dialects.Maruku.block.code = function code(block, next) { + if (block.match(/^ /)) { + var text = block.replace(/(^|\n) /g, "$1"), accum = [], curstr = "", curstyle = null; + function add(str, style) { + if (style != curstyle) { + if (curstyle) accum.push(["span", {"class": "cm-" + curstyle}, curstr]); + else if (curstr) accum.push(curstr); + curstr = str; curstyle = style; + } else curstr += str; + } + CodeMirror.runMode(text, "rust", add); + add("", "bogus"); // Flush pending string. + return [["pre", {"class": "cm-s-default"}].concat(accum)]; + } +}; function markdown(str) { return md.toHTML(str, "Maruku"); } @@ -19,6 +37,7 @@ function fileDates(file, c) { function head(title) { return "" + + "" + "" + title + "\n"; } diff --git a/doc/tutorial/data.md b/doc/tutorial/data.md index d09359f198d..638db23cb08 100644 --- a/doc/tutorial/data.md +++ b/doc/tutorial/data.md @@ -13,11 +13,11 @@ types). ## Records -Rust record types are written `{field1: TYPE, field2: TYPE [, -...]}`, and record literals are written in the same way, but with -expressions instead of types. They are quite similar to C structs, and -even laid out the same way in memory (so you can read from a Rust -struct in C, and vice-versa). +Rust record types are written `{field1: TYPE, field2: TYPE [, ...]}`, +and record literals are written in the same way, but with expressions +instead of types. They are quite similar to C structs, and even laid +out the same way in memory (so you can read from a Rust struct in C, +and vice-versa). The dot operator is used to access record fields (`mypoint.x`). @@ -100,6 +100,8 @@ equivalent to an `enum` in C: This will define `north`, `east`, `south`, and `west` as constants, all of which have type `direction`. + + There is a special case for tags with a single variant. These are used to define new types in such a way that the new name is not just a synonym for an existing type, but its own distinct type. If you say: diff --git a/doc/tutorial/lib/codemirror-node.js b/doc/tutorial/lib/codemirror-node.js new file mode 100644 index 00000000000..fac4c076d48 --- /dev/null +++ b/doc/tutorial/lib/codemirror-node.js @@ -0,0 +1,124 @@ +exports.htmlEscape = function(text) { + var replacements = {"<": "<", ">": ">", + "&": "&", "\"": """}; + return text.replace(/[<>&"]/g, function(character) { + return replacements[character]; + }); +}; + +exports.splitLines = function(string){return string.split(/\r?\n/);}; + +// Counts the column offset in a string, taking tabs into account. +// Used mostly to find indentation. +function countColumn(string, end) { + if (end == null) { + end = string.search(/[^\s\u00a0]/); + if (end == -1) end = string.length; + } + for (var i = 0, n = 0; i < end; ++i) { + if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); + else ++n; + } + return n; +} + +function StringStream(string) { + this.pos = this.start = 0; + this.string = string; +} +StringStream.prototype = { + eol: function() {return this.pos >= this.string.length;}, + sol: function() {return this.pos == 0;}, + peek: function() {return this.string.charAt(this.pos);}, + next: function() { + if (this.pos < this.string.length) + return this.string.charAt(this.pos++); + }, + eat: function(match) { + var ch = this.string.charAt(this.pos); + if (typeof match == "string") var ok = ch == match; + else var ok = ch && (match.test ? match.test(ch) : match(ch)); + if (ok) {++this.pos; return ch;} + }, + eatWhile: function(match) { + var start = this.pos; + while (this.eat(match)){} + return this.pos > start; + }, + eatSpace: function() { + var start = this.pos; + while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; + return this.pos > start; + }, + skipToEnd: function() {this.pos = this.string.length;}, + skipTo: function(ch) { + var found = this.string.indexOf(ch, this.pos); + if (found > -1) {this.pos = found; return true;} + }, + backUp: function(n) {this.pos -= n;}, + column: function() {return countColumn(this.string, this.start);}, + indentation: function() {return countColumn(this.string);}, + match: function(pattern, consume, caseInsensitive) { + if (typeof pattern == "string") { + function cased(str) {return caseInsensitive ? str.toLowerCase() : str;} + if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) { + if (consume !== false) this.pos += pattern.length; + return true; + } + } + else { + var match = this.string.slice(this.pos).match(pattern); + if (match && consume !== false) this.pos += match[0].length; + return match; + } + }, + current: function(){return this.string.slice(this.start, this.pos);} +}; +exports.StringStream = StringStream; + +exports.startState = function(mode, a1, a2) { + return mode.startState ? mode.startState(a1, a2) : true; +}; + +var modes = {}, mimeModes = {}; +exports.defineMode = function(name, mode) { modes[name] = mode; }; +exports.defineMIME = function(mime, spec) { mimeModes[mime] = spec; }; +exports.getMode = function(options, spec) { + if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) + spec = mimeModes[spec]; + if (typeof spec == "string") + var mname = spec, config = {}; + else if (spec != null) + var mname = spec.name, config = spec; + var mfactory = modes[mname]; + if (!mfactory) throw new Error("Unknown mode: " + spec); + return mfactory(options, config || {}); +}; + +exports.runMode = function(string, modespec, callback) { + var mode = exports.getMode({indentUnit: 2}, modespec); + var isNode = callback.nodeType == 1; + if (isNode) { + var node = callback, accum = []; + callback = function(string, style) { + if (string == "\n") + accum.push("
"); + else if (style) + accum.push("" + exports.htmlEscape(string) + ""); + else + accum.push(exports.htmlEscape(string)); + } + } + var lines = exports.splitLines(string), state = exports.startState(mode); + for (var i = 0, e = lines.length; i < e; ++i) { + if (i) callback("\n"); + var stream = new exports.StringStream(lines[i]); + while (!stream.eol()) { + var style = mode.token(stream, state); + callback(stream.current(), style, i, stream.start); + stream.start = stream.pos; + } + } + if (isNode) + node.innerHTML = accum.join(""); +}; diff --git a/doc/tutorial/lib/codemirror-rust.js b/doc/tutorial/lib/codemirror-rust.js new file mode 100644 index 00000000000..8a251c9a616 --- /dev/null +++ b/doc/tutorial/lib/codemirror-rust.js @@ -0,0 +1,405 @@ +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", "obj": "fn", + "lambda": "fn", "type": "type", "tag": "tag", "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" + }; + 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 block(type) { + if (type == "}") return cont(); + if (type == "let") return cont(pushlex("stat", "let"), letdef1, poplex, block); + if (type == "fn") return cont(pushlex("stat"), fndef, poplex, block); + if (type == "type") return cont(pushlex("stat"), tydef, endstatement, poplex, block); + if (type == "tag") return cont(pushlex("stat"), tagdef, poplex, block); + if (type == "mod") return cont(pushlex("stat"), mod, poplex, block); + 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(recliteral); + return pass(block); + } + function recliteral(type) { + if (content == "mutable" || content == "with") {cx.marked = "keyword"; return cont(recliteral);} + if (content.match(/^\w*$/)) {cx.marked = "variable"; return cont(recliteral);} + if (type == ":") return cont(expression, recliteral); + if (type == "}") return cont(); + return cont(recliteral); + } + 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 == ";") 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 (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); + 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 tagdef(type) { + if (type == "name") {cx.marked = "def"; return cont(tagdef);} + if (content == "<") return cont(typarams, tagdef); + if (content == "=") return cont(typecx, rtype, valcx, endstatement); + if (type == "{") return cont(pushlex("}"), typecx, tagblock, valcx, poplex); + return cont(tagdef); + } + function tagblock(type) { + if (type == "}") return cont(); + if (type == "(") return cont(pushlex(")"), commasep(rtype, ")"), poplex, tagblock); + if (content.match(/^\w+$/)) cx.marked = "def"; + return cont(tagblock); + } + function mod(type) { + if (type == "name") {cx.marked = "def"; return cont(mod);} + if (type == "{") return cont(pushlex("}"), block, poplex); + return pass(); + } + function typarams(type) { + if (content == ">") return cont(); + if (content == ",") return cont(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); + 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"); diff --git a/doc/tutorial/lib/markdown.js b/doc/tutorial/lib/markdown.js index f19d0529953..4d3bfaeb77f 100644 --- a/doc/tutorial/lib/markdown.js +++ b/doc/tutorial/lib/markdown.js @@ -252,8 +252,6 @@ Markdown.prototype.toTree = function toTree( source, custom_root ) { Markdown.prototype.debug = function () { var args = Array.prototype.slice.call( arguments); args.unshift(this.debug_indent); - if (typeof print !== "undefined") - print.apply( print, args ); if (typeof console !== "undefined" && typeof console.log !== "undefined") console.log.apply( null, args ); } @@ -1125,6 +1123,10 @@ Markdown.dialects.Maruku.block.definition_list = function definition_list( block return [ list ]; } +Markdown.dialects.Maruku.block.html_paragraph = function html_paragraph( block, next ) { + if (block.match(/^<\w/)) return [["RAW", block.toString()]]; +} + Markdown.dialects.Maruku.inline[ "{:" ] = function inline_meta( text, matches, out ) { if ( !out.length ) { return [ 2, "{:" ]; @@ -1297,6 +1299,7 @@ function render_tree( jsonml ) { var tag = jsonml.shift(), attributes = {}, content = []; + if (tag == "RAW") return jsonml[0]; if ( jsonml.length && typeof jsonml[ 0 ] === "object" && !( jsonml[ 0 ] instanceof Array ) ) { attributes = jsonml.shift(); diff --git a/doc/tutorial/syntax.md b/doc/tutorial/syntax.md index 2b284ecafa4..a40c9822152 100644 --- a/doc/tutorial/syntax.md +++ b/doc/tutorial/syntax.md @@ -1,7 +1,5 @@ # Syntax Basics -FIXME: mention the module separator `::` somewhere - ## Braces Assuming you've programmed in any C-family language (C++, Java, @@ -75,6 +73,19 @@ only have a trailing expression when you want to use their value for something—in which case you'll have embedded it in a bigger statement, like the `let x = ...` example above. +## Identifiers + +Rust identifiers must start with an alphabetic character or an +underscore, and after that may contain any alphanumeric character, and +more underscores. + +NOTE: The parser doesn't currently recognize non-ascii alphabetic +characters. This is a bug that will eventually be fixed. + +The double-colon (`::`) is used as a module separator, so +`std::io::println` means 'the thing named `println` in the module +named `io` in the module named `std`'. + ## Types The `-> bool` in the last example is the way a function's return type @@ -158,10 +169,10 @@ Types can be given names with `type` declarations: This will provide a synonym, `monster_size`, for unsigned integers. It will not actually create a new type—`monster_size` and `uint` can be used interchangeably, and using one where the other is expected is not -a type error. Read about [single-variant tags][svt] in the next -section if you need to create a type name that's not just a synonym. +a type error. Read about [single-variant tags][svt] further on if you +need to create a type name that's not just a synonym. -[svt]: FIXME +[svt]: data.html#single_variant_tag ## Literals @@ -211,4 +222,37 @@ following it, will not appear in the resulting string literal. ## Operators -FIXME recap C-style operators, ?:, explain `as` +Rust's set of operators contains very few surprises. The main +difference with C is that `++` and `--` are missing, and that the +logical binary operators have higher precedence—in C, `x & 2 > 0` +comes out as `x & (2 > 0)`, in Rust, it means `(x & 2) > 0`, which is +more likely to be what you expect (unless you are a C veteran). + +Thus, binary arithmetic is done with `*`, `/`, `%`, `+`, and `-` +(multiply, divide, remainder, plus, minus). `-` is also a unary prefix +operator (there are no unary postfix operators in Rust) that does +negation. + +Binary shifting is done with `>>` (shift right), `>>>` (arithmetic +shift right), and `<<` (shift left). Logical bitwise operators are +`&`, `|`, and `^` (and, or, and exclusive or), and unary `!` for +bitwise negation (or boolean negation when applied to a boolean +value). + +The comparison operators are the traditional `==`, `!=`, `<`, `>`, +`<=`, and `>=`. Short-circuiting (lazy) boolean operators are written +`&&` (and) and `||` (or). + +Rust has a ternary conditional operator `?:`, as in: + + let message = badness < 10 ? "error" : "FATAL ERROR"; + +For type casting, Rust uses the binary `as` operator, which has a +precedence between the bitwise combination operators (`&`, `|`, `^`) +and the comparison operators. It takes an expression on the left side, +and a type on the right side, and will, if a meaningful conversion +exists, convert the result of the expression to the given type. + + let x: float = 4.0; + let y: uint = x as uint; + assert y == 4u; diff --git a/doc/tutorial/web/default.css b/doc/tutorial/web/default.css new file mode 100644 index 00000000000..e68f0fb378c --- /dev/null +++ b/doc/tutorial/web/default.css @@ -0,0 +1,19 @@ +.cm-s-default span.cm-keyword {color: #708;} +.cm-s-default span.cm-atom {color: #219;} +.cm-s-default span.cm-number {color: #164;} +.cm-s-default span.cm-def {color: #00f;} +.cm-s-default span.cm-variable {color: black;} +.cm-s-default span.cm-variable-2 {color: #05a;} +.cm-s-default span.cm-variable-3 {color: #0a5;} +.cm-s-default span.cm-property {color: black;} +.cm-s-default span.cm-operator {color: black;} +.cm-s-default span.cm-comment {color: #a50;} +.cm-s-default span.cm-string {color: #a11;} +.cm-s-default span.cm-string-2 {color: #f50;} +.cm-s-default span.cm-meta {color: #555;} +.cm-s-default span.cm-error {color: #f00;} +.cm-s-default span.cm-qualifier {color: #555;} +.cm-s-default span.cm-builtin {color: #30a;} +.cm-s-default span.cm-bracket {color: #cc7;} +.cm-s-default span.cm-tag {color: #170;} +.cm-s-default span.cm-attribute {color: #00c;} diff --git a/doc/tutorial/web/style.css b/doc/tutorial/web/style.css index a71180027f0..c3d8fa43441 100644 --- a/doc/tutorial/web/style.css +++ b/doc/tutorial/web/style.css @@ -18,9 +18,8 @@ code { } pre { - margin: 1.1em 12px; - border: 1px solid #CCCCCC; - padding: .4em; + margin: 1.1em 0; + padding: .4em .4em .4em 1em; font-size: 120%; }