191 lines
6.6 KiB
JavaScript
191 lines
6.6 KiB
JavaScript
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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://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.registerHelper("wordChars", "r", /[\w.]/);
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CodeMirror.defineMode("r", function(config) {
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function wordObj(words) {
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var res = {};
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for (var i = 0; i < words.length; ++i) res[words[i]] = true;
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return res;
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}
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var commonAtoms = ["NULL", "NA", "Inf", "NaN", "NA_integer_", "NA_real_", "NA_complex_", "NA_character_", "TRUE", "FALSE"];
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var commonBuiltins = ["list", "quote", "bquote", "eval", "return", "call", "parse", "deparse"];
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var commonKeywords = ["if", "else", "repeat", "while", "function", "for", "in", "next", "break"];
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var commonBlockKeywords = ["if", "else", "repeat", "while", "function", "for"];
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CodeMirror.registerHelper("hintWords", "r", commonAtoms.concat(commonBuiltins, commonKeywords));
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var atoms = wordObj(commonAtoms);
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var builtins = wordObj(commonBuiltins);
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var keywords = wordObj(commonKeywords);
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var blockkeywords = wordObj(commonBlockKeywords);
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var opChars = /[+\-*\/^<>=!&|~$:]/;
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var curPunc;
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function tokenBase(stream, state) {
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curPunc = null;
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var ch = stream.next();
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if (ch == "#") {
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stream.skipToEnd();
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return "comment";
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} else if (ch == "0" && stream.eat("x")) {
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stream.eatWhile(/[\da-f]/i);
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return "number";
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} else if (ch == "." && stream.eat(/\d/)) {
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stream.match(/\d*(?:e[+\-]?\d+)?/);
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return "number";
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} else if (/\d/.test(ch)) {
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stream.match(/\d*(?:\.\d+)?(?:e[+\-]\d+)?L?/);
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return "number";
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} else if (ch == "'" || ch == '"') {
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state.tokenize = tokenString(ch);
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return "string";
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} else if (ch == "`") {
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stream.match(/[^`]+`/);
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return "variable-3";
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} else if (ch == "." && stream.match(/.(?:[.]|\d+)/)) {
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return "keyword";
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} else if (/[a-zA-Z\.]/.test(ch)) {
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stream.eatWhile(/[\w\.]/);
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var word = stream.current();
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if (atoms.propertyIsEnumerable(word)) return "atom";
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if (keywords.propertyIsEnumerable(word)) {
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// Block keywords start new blocks, except 'else if', which only starts
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// one new block for the 'if', no block for the 'else'.
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if (blockkeywords.propertyIsEnumerable(word) &&
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!stream.match(/\s*if(\s+|$)/, false))
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curPunc = "block";
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return "keyword";
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}
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if (builtins.propertyIsEnumerable(word)) return "builtin";
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return "variable";
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} else if (ch == "%") {
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if (stream.skipTo("%")) stream.next();
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return "operator variable-2";
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} else if (
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(ch == "<" && stream.eat("-")) ||
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(ch == "<" && stream.match("<-")) ||
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(ch == "-" && stream.match(/>>?/))
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) {
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return "operator arrow";
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} else if (ch == "=" && state.ctx.argList) {
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return "arg-is";
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} else if (opChars.test(ch)) {
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if (ch == "$") return "operator dollar";
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stream.eatWhile(opChars);
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return "operator";
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} else if (/[\(\){}\[\];]/.test(ch)) {
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curPunc = ch;
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if (ch == ";") return "semi";
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return null;
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} else {
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return null;
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}
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}
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function tokenString(quote) {
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return function(stream, state) {
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if (stream.eat("\\")) {
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var ch = stream.next();
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if (ch == "x") stream.match(/^[a-f0-9]{2}/i);
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else if ((ch == "u" || ch == "U") && stream.eat("{") && stream.skipTo("}")) stream.next();
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else if (ch == "u") stream.match(/^[a-f0-9]{4}/i);
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else if (ch == "U") stream.match(/^[a-f0-9]{8}/i);
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else if (/[0-7]/.test(ch)) stream.match(/^[0-7]{1,2}/);
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return "string-2";
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} else {
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var next;
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while ((next = stream.next()) != null) {
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if (next == quote) { state.tokenize = tokenBase; break; }
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if (next == "\\") { stream.backUp(1); break; }
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}
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return "string";
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}
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};
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}
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var ALIGN_YES = 1, ALIGN_NO = 2, BRACELESS = 4
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function push(state, type, stream) {
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state.ctx = {type: type,
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indent: state.indent,
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flags: 0,
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column: stream.column(),
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prev: state.ctx};
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}
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function setFlag(state, flag) {
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var ctx = state.ctx
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state.ctx = {type: ctx.type,
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indent: ctx.indent,
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flags: ctx.flags | flag,
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column: ctx.column,
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prev: ctx.prev}
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}
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function pop(state) {
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state.indent = state.ctx.indent;
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state.ctx = state.ctx.prev;
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}
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return {
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startState: function() {
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return {tokenize: tokenBase,
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ctx: {type: "top",
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indent: -config.indentUnit,
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flags: ALIGN_NO},
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indent: 0,
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afterIdent: false};
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},
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token: function(stream, state) {
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if (stream.sol()) {
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if ((state.ctx.flags & 3) == 0) state.ctx.flags |= ALIGN_NO
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if (state.ctx.flags & BRACELESS) pop(state)
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state.indent = stream.indentation();
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}
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if (stream.eatSpace()) return null;
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var style = state.tokenize(stream, state);
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if (style != "comment" && (state.ctx.flags & ALIGN_NO) == 0) setFlag(state, ALIGN_YES)
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if ((curPunc == ";" || curPunc == "{" || curPunc == "}") && state.ctx.type == "block") pop(state);
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if (curPunc == "{") push(state, "}", stream);
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else if (curPunc == "(") {
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push(state, ")", stream);
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if (state.afterIdent) state.ctx.argList = true;
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}
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else if (curPunc == "[") push(state, "]", stream);
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else if (curPunc == "block") push(state, "block", stream);
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else if (curPunc == state.ctx.type) pop(state);
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else if (state.ctx.type == "block" && style != "comment") setFlag(state, BRACELESS)
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state.afterIdent = style == "variable" || style == "keyword";
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return style;
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},
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indent: function(state, textAfter) {
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if (state.tokenize != tokenBase) return 0;
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var firstChar = textAfter && textAfter.charAt(0), ctx = state.ctx,
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closing = firstChar == ctx.type;
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if (ctx.flags & BRACELESS) ctx = ctx.prev
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if (ctx.type == "block") return ctx.indent + (firstChar == "{" ? 0 : config.indentUnit);
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else if (ctx.flags & ALIGN_YES) return ctx.column + (closing ? 0 : 1);
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else return ctx.indent + (closing ? 0 : config.indentUnit);
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},
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lineComment: "#"
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};
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});
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CodeMirror.defineMIME("text/x-rsrc", "r");
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});
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