// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/5/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("crystal", function(config) {
function wordRegExp(words, end) {
return new RegExp((end ? "" : "^") + "(?:" + words.join("|") + ")" + (end ? "$" : "\\b"));
}
function chain(tokenize, stream, state) {
state.tokenize.push(tokenize);
return tokenize(stream, state);
}
var operators = /^(?:[-+/%|&^]|\*\*?|[<>]{2})/;
var conditionalOperators = /^(?:[=!]~|===|<=>|[<>=!]=?|[|&]{2}|~)/;
var indexingOperators = /^(?:\[\][?=]?)/;
var anotherOperators = /^(?:\.(?:\.{2})?|->|[?:])/;
var idents = /^[a-z_\u009F-\uFFFF][a-zA-Z0-9_\u009F-\uFFFF]*/;
var types = /^[A-Z_\u009F-\uFFFF][a-zA-Z0-9_\u009F-\uFFFF]*/;
var keywords = wordRegExp([
"abstract", "alias", "as", "asm", "begin", "break", "case", "class", "def", "do",
"else", "elsif", "end", "ensure", "enum", "extend", "for", "fun", "if",
"include", "instance_sizeof", "lib", "macro", "module", "next", "of", "out", "pointerof",
"private", "protected", "rescue", "return", "require", "select", "sizeof", "struct",
"super", "then", "type", "typeof", "uninitialized", "union", "unless", "until", "when", "while", "with",
"yield", "__DIR__", "__END_LINE__", "__FILE__", "__LINE__"
]);
var atomWords = wordRegExp(["true", "false", "nil", "self"]);
var indentKeywordsArray = [
"def", "fun", "macro",
"class", "module", "struct", "lib", "enum", "union",
"do", "for"
];
var indentKeywords = wordRegExp(indentKeywordsArray);
var indentExpressionKeywordsArray = ["if", "unless", "case", "while", "until", "begin", "then"];
var indentExpressionKeywords = wordRegExp(indentExpressionKeywordsArray);
var dedentKeywordsArray = ["end", "else", "elsif", "rescue", "ensure"];
var dedentKeywords = wordRegExp(dedentKeywordsArray);
var dedentPunctualsArray = ["\\)", "\\}", "\\]"];
var dedentPunctuals = new RegExp("^(?:" + dedentPunctualsArray.join("|") + ")$");
var nextTokenizer = {
"def": tokenFollowIdent, "fun": tokenFollowIdent, "macro": tokenMacroDef,
"class": tokenFollowType, "module": tokenFollowType, "struct": tokenFollowType,
"lib": tokenFollowType, "enum": tokenFollowType, "union": tokenFollowType
};
var matching = {"[": "]", "{": "}", "(": ")", "<": ">"};
function tokenBase(stream, state) {
if (stream.eatSpace()) {
return null;
}
// Macros
if (state.lastToken != "\\" && stream.match("{%", false)) {
return chain(tokenMacro("%", "%"), stream, state);
}
if (state.lastToken != "\\" && stream.match("{{", false)) {
return chain(tokenMacro("{", "}"), stream, state);
}
// Comments
if (stream.peek() == "#") {
stream.skipToEnd();
return "comment";
}
// Variables and keywords
var matched;
if (stream.match(idents)) {
stream.eat(/[?!]/);
matched = stream.current();
if (stream.eat(":")) {
return "atom";
} else if (state.lastToken == ".") {
return "property";
} else if (keywords.test(matched)) {
if (indentKeywords.test(matched)) {
if (!(matched == "fun" && state.blocks.indexOf("lib") >= 0) && !(matched == "def" && state.lastToken == "abstract")) {
state.blocks.push(matched);
state.currentIndent += 1;
}
} else if ((state.lastStyle == "operator" || !state.lastStyle) && indentExpressionKeywords.test(matched)) {
state.blocks.push(matched);
state.currentIndent += 1;
} else if (matched == "end") {
state.blocks.pop();
state.currentIndent -= 1;
}
if (nextTokenizer.hasOwnProperty(matched)) {
state.tokenize.push(nextTokenizer[matched]);
}
return "keyword";
} else if (atomWords.test(matched)) {
return "atom";
}
return "variable";
}
// Class variables and instance variables
// or attributes
if (stream.eat("@")) {
if (stream.peek() == "[") {
return chain(tokenNest("[", "]", "meta"), stream, state);
}
stream.eat("@");
stream.match(idents) || stream.match(types);
return "variable-2";
}
// Constants and types
if (stream.match(types)) {
return "tag";
}
// Symbols or ':' operator
if (stream.eat(":")) {
if (stream.eat("\"")) {
return chain(tokenQuote("\"", "atom", false), stream, state);
} else if (stream.match(idents) || stream.match(types) ||
stream.match(operators) || stream.match(conditionalOperators) || stream.match(indexingOperators)) {
return "atom";
}
stream.eat(":");
return "operator";
}
// Strings
if (stream.eat("\"")) {
return chain(tokenQuote("\"", "string", true), stream, state);
}
// Strings or regexps or macro variables or '%' operator
if (stream.peek() == "%") {
var style = "string";
var embed = true;
var delim;
if (stream.match("%r")) {
// Regexps
style = "string-2";
delim = stream.next();
} else if (stream.match("%w")) {
embed = false;
delim = stream.next();
} else if (stream.match("%q")) {
embed = false;
delim = stream.next();
} else {
if(delim = stream.match(/^%([^\w\s=])/)) {
delim = delim[1];
} else if (stream.match(/^%[a-zA-Z_\u009F-\uFFFF][\w\u009F-\uFFFF]*/)) {
// Macro variables
return "meta";
} else if (stream.eat('%')) {
// '%' operator
return "operator";
}
}
if (matching.hasOwnProperty(delim)) {
delim = matching[delim];
}
return chain(tokenQuote(delim, style, embed), stream, state);
}
// Here Docs
if (matched = stream.match(/^<<-('?)([A-Z]\w*)\1/)) {
return chain(tokenHereDoc(matched[2], !matched[1]), stream, state)
}
// Characters
if (stream.eat("'")) {
stream.match(/^(?:[^']|\\(?:[befnrtv0'"]|[0-7]{3}|u(?:[0-9a-fA-F]{4}|\{[0-9a-fA-F]{1,6}\})))/);
stream.eat("'");
return "atom";
}
// Numbers
if (stream.eat("0")) {
if (stream.eat("x")) {
stream.match(/^[0-9a-fA-F_]+/);
} else if (stream.eat("o")) {
stream.match(/^[0-7_]+/);
} else if (stream.eat("b")) {
stream.match(/^[01_]+/);
}
return "number";
}
if (stream.eat(/^\d/)) {
stream.match(/^[\d_]*(?:\.[\d_]+)?(?:[eE][+-]?\d+)?/);
return "number";
}
// Operators
if (stream.match(operators)) {
stream.eat("="); // Operators can follow assign symbol.
return "operator";
}
if (stream.match(conditionalOperators) || stream.match(anotherOperators)) {
return "operator";
}
// Parens and braces
if (matched = stream.match(/[({[]/, false)) {
matched = matched[0];
return chain(tokenNest(matched, matching[matched], null), stream, state);
}
// Escapes
if (stream.eat("\\")) {
stream.next();
return "meta";
}
stream.next();
return null;
}
function tokenNest(begin, end, style, started) {
return function (stream, state) {
if (!started && stream.match(begin)) {
state.tokenize[state.tokenize.length - 1] = tokenNest(begin, end, style, true);
state.currentIndent += 1;
return style;
}
var nextStyle = tokenBase(stream, state);
if (stream.current() === end) {
state.tokenize.pop();
state.currentIndent -= 1;
nextStyle = style;
}
return nextStyle;
};
}
function tokenMacro(begin, end, started) {
return function (stream, state) {
if (!started && stream.match("{" + begin)) {
state.currentIndent += 1;
state.tokenize[state.tokenize.length - 1] = tokenMacro(begin, end, true);
return "meta";
}
if (stream.match(end + "}")) {
state.currentIndent -= 1;
state.tokenize.pop();
return "meta";
}
return tokenBase(stream, state);
};
}
function tokenMacroDef(stream, state) {
if (stream.eatSpace()) {
return null;
}
var matched;
if (matched = stream.match(idents)) {
if (matched == "def") {
return "keyword";
}
stream.eat(/[?!]/);
}
state.tokenize.pop();
return "def";
}
function tokenFollowIdent(stream, state) {
if (stream.eatSpace()) {
return null;
}
if (stream.match(idents)) {
stream.eat(/[!?]/);
} else {
stream.match(operators) || stream.match(conditionalOperators) || stream.match(indexingOperators);
}
state.tokenize.pop();
return "def";
}
function tokenFollowType(stream, state) {
if (stream.eatSpace()) {
return null;
}
stream.match(types);
state.tokenize.pop();
return "def";
}
function tokenQuote(end, style, embed) {
return function (stream, state) {
var escaped = false;
while (stream.peek()) {
if (!escaped) {
if (stream.match("{%", false)) {
state.tokenize.push(tokenMacro("%", "%"));
return style;
}
if (stream.match("{{", false)) {
state.tokenize.push(tokenMacro("{", "}"));
return style;
}
if (embed && stream.match("#{", false)) {
state.tokenize.push(tokenNest("#{", "}", "meta"));
return style;
}
var ch = stream.next();
if (ch == end) {
state.tokenize.pop();
return style;
}
escaped = embed && ch == "\\";
} else {
stream.next();
escaped = false;
}
}
return style;
};
}
function tokenHereDoc(phrase, embed) {
return function (stream, state) {
if (stream.sol()) {
stream.eatSpace()
if (stream.match(phrase)) {
state.tokenize.pop();
return "string";
}
}
var escaped = false;
while (stream.peek()) {
if (!escaped) {
if (stream.match("{%", false)) {
state.tokenize.push(tokenMacro("%", "%"));
return "string";
}
if (stream.match("{{", false)) {
state.tokenize.push(tokenMacro("{", "}"));
return "string";
}
if (embed && stream.match("#{", false)) {
state.tokenize.push(tokenNest("#{", "}", "meta"));
return "string";
}
escaped = embed && stream.next() == "\\";
} else {
stream.next();
escaped = false;
}
}
return "string";
}
}
return {
startState: function () {
return {
tokenize: [tokenBase],
currentIndent: 0,
lastToken: null,
lastStyle: null,
blocks: []
};
},
token: function (stream, state) {
var style = state.tokenize[state.tokenize.length - 1](stream, state);
var token = stream.current();
if (style && style != "comment") {
state.lastToken = token;
state.lastStyle = style;
}
return style;
},
indent: function (state, textAfter) {
textAfter = textAfter.replace(/^\s*(?:\{%)?\s*|\s*(?:%\})?\s*$/g, "");
if (dedentKeywords.test(textAfter) || dedentPunctuals.test(textAfter)) {
return config.indentUnit * (state.currentIndent - 1);
}
return config.indentUnit * state.currentIndent;
},
fold: "indent",
electricInput: wordRegExp(dedentPunctualsArray.concat(dedentKeywordsArray), true),
lineComment: '#'
};
});
CodeMirror.defineMIME("text/x-crystal", "crystal");
});
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