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