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