1// CodeMirror, copyright (c) by Marijn Haverbeke and others
  2// Distributed under an MIT license: https://codemirror.net/LICENSE
  3
  4(function(mod) {
  5  if (typeof exports == "object" && typeof module == "object") // CommonJS
  6    mod(require("../../lib/codemirror"));
  7  else if (typeof define == "function" && define.amd) // AMD
  8    define(["../../lib/codemirror"], mod);
  9  else // Plain browser env
 10    mod(CodeMirror);
 11})(function(CodeMirror) {
 12"use strict";
 13
 14CodeMirror.defineMode("octave", function() {
 15  function wordRegexp(words) {
 16    return new RegExp("^((" + words.join(")|(") + "))\\b");
 17  }
 18
 19  var singleOperators = new RegExp("^[\\+\\-\\*/&|\\^~<>!@'\\\\]");
 20  var singleDelimiters = new RegExp('^[\\(\\[\\{\\},:=;\\.]');
 21  var doubleOperators = new RegExp("^((==)|(~=)|(<=)|(>=)|(<<)|(>>)|(\\.[\\+\\-\\*/\\^\\\\]))");
 22  var doubleDelimiters = new RegExp("^((!=)|(\\+=)|(\\-=)|(\\*=)|(/=)|(&=)|(\\|=)|(\\^=))");
 23  var tripleDelimiters = new RegExp("^((>>=)|(<<=))");
 24  var expressionEnd = new RegExp("^[\\]\\)]");
 25  var identifiers = new RegExp("^[_A-Za-z\xa1-\uffff][_A-Za-z0-9\xa1-\uffff]*");
 26
 27  var builtins = wordRegexp([
 28    'error', 'eval', 'function', 'abs', 'acos', 'atan', 'asin', 'cos',
 29    'cosh', 'exp', 'log', 'prod', 'sum', 'log10', 'max', 'min', 'sign', 'sin', 'sinh',
 30    'sqrt', 'tan', 'reshape', 'break', 'zeros', 'default', 'margin', 'round', 'ones',
 31    'rand', 'syn', 'ceil', 'floor', 'size', 'clear', 'zeros', 'eye', 'mean', 'std', 'cov',
 32    'det', 'eig', 'inv', 'norm', 'rank', 'trace', 'expm', 'logm', 'sqrtm', 'linspace', 'plot',
 33    'title', 'xlabel', 'ylabel', 'legend', 'text', 'grid', 'meshgrid', 'mesh', 'num2str',
 34    'fft', 'ifft', 'arrayfun', 'cellfun', 'input', 'fliplr', 'flipud', 'ismember'
 35  ]);
 36
 37  var keywords = wordRegexp([
 38    'return', 'case', 'switch', 'else', 'elseif', 'end', 'endif', 'endfunction',
 39    'if', 'otherwise', 'do', 'for', 'while', 'try', 'catch', 'classdef', 'properties', 'events',
 40    'methods', 'global', 'persistent', 'endfor', 'endwhile', 'printf', 'sprintf', 'disp', 'until',
 41    'continue', 'pkg'
 42  ]);
 43
 44
 45  // tokenizers
 46  function tokenTranspose(stream, state) {
 47    if (!stream.sol() && stream.peek() === '\'') {
 48      stream.next();
 49      state.tokenize = tokenBase;
 50      return 'operator';
 51    }
 52    state.tokenize = tokenBase;
 53    return tokenBase(stream, state);
 54  }
 55
 56
 57  function tokenComment(stream, state) {
 58    if (stream.match(/^.*%}/)) {
 59      state.tokenize = tokenBase;
 60      return 'comment';
 61    };
 62    stream.skipToEnd();
 63    return 'comment';
 64  }
 65
 66  function tokenBase(stream, state) {
 67    // whitespaces
 68    if (stream.eatSpace()) return null;
 69
 70    // Handle one line Comments
 71    if (stream.match('%{')){
 72      state.tokenize = tokenComment;
 73      stream.skipToEnd();
 74      return 'comment';
 75    }
 76
 77    if (stream.match(/^[%#]/)){
 78      stream.skipToEnd();
 79      return 'comment';
 80    }
 81
 82    // Handle Number Literals
 83    if (stream.match(/^[0-9\.+-]/, false)) {
 84      if (stream.match(/^[+-]?0x[0-9a-fA-F]+[ij]?/)) {
 85        stream.tokenize = tokenBase;
 86        return 'number'; };
 87      if (stream.match(/^[+-]?\d*\.\d+([EeDd][+-]?\d+)?[ij]?/)) { return 'number'; };
 88      if (stream.match(/^[+-]?\d+([EeDd][+-]?\d+)?[ij]?/)) { return 'number'; };
 89    }
 90    if (stream.match(wordRegexp(['nan','NaN','inf','Inf']))) { return 'number'; };
 91
 92    // Handle Strings
 93    var m = stream.match(/^"(?:[^"]|"")*("|$)/) || stream.match(/^'(?:[^']|'')*('|$)/)
 94    if (m) { return m[1] ? 'string' : "string error"; }
 95
 96    // Handle words
 97    if (stream.match(keywords)) { return 'keyword'; } ;
 98    if (stream.match(builtins)) { return 'builtin'; } ;
 99    if (stream.match(identifiers)) { return 'variable'; } ;
100
101    if (stream.match(singleOperators) || stream.match(doubleOperators)) { return 'operator'; };
102    if (stream.match(singleDelimiters) || stream.match(doubleDelimiters) || stream.match(tripleDelimiters)) { return null; };
103
104    if (stream.match(expressionEnd)) {
105      state.tokenize = tokenTranspose;
106      return null;
107    };
108
109
110    // Handle non-detected items
111    stream.next();
112    return 'error';
113  };
114
115
116  return {
117    startState: function() {
118      return {
119        tokenize: tokenBase
120      };
121    },
122
123    token: function(stream, state) {
124      var style = state.tokenize(stream, state);
125      if (style === 'number' || style === 'variable'){
126        state.tokenize = tokenTranspose;
127      }
128      return style;
129    },
130
131    lineComment: '%',
132
133    fold: 'indent'
134  };
135});
136
137CodeMirror.defineMIME("text/x-octave", "octave");
138
139});