github.com/jancarloviray/community@v0.41.1-0.20170124221257-33a66c87cf2f/app/public/codemirror/addon/mode/simple.js (about)

     1  // CodeMirror, copyright (c) by Marijn Haverbeke and others
     2  // Distributed under an MIT license: http://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  
    14    CodeMirror.defineSimpleMode = function(name, states) {
    15      CodeMirror.defineMode(name, function(config) {
    16        return CodeMirror.simpleMode(config, states);
    17      });
    18    };
    19  
    20    CodeMirror.simpleMode = function(config, states) {
    21      ensureState(states, "start");
    22      var states_ = {}, meta = states.meta || {}, hasIndentation = false;
    23      for (var state in states) if (state != meta && states.hasOwnProperty(state)) {
    24        var list = states_[state] = [], orig = states[state];
    25        for (var i = 0; i < orig.length; i++) {
    26          var data = orig[i];
    27          list.push(new Rule(data, states));
    28          if (data.indent || data.dedent) hasIndentation = true;
    29        }
    30      }
    31      var mode = {
    32        startState: function() {
    33          return {state: "start", pending: null,
    34                  local: null, localState: null,
    35                  indent: hasIndentation ? [] : null};
    36        },
    37        copyState: function(state) {
    38          var s = {state: state.state, pending: state.pending,
    39                   local: state.local, localState: null,
    40                   indent: state.indent && state.indent.slice(0)};
    41          if (state.localState)
    42            s.localState = CodeMirror.copyState(state.local.mode, state.localState);
    43          if (state.stack)
    44            s.stack = state.stack.slice(0);
    45          for (var pers = state.persistentStates; pers; pers = pers.next)
    46            s.persistentStates = {mode: pers.mode,
    47                                  spec: pers.spec,
    48                                  state: pers.state == state.localState ? s.localState : CodeMirror.copyState(pers.mode, pers.state),
    49                                  next: s.persistentStates};
    50          return s;
    51        },
    52        token: tokenFunction(states_, config),
    53        innerMode: function(state) { return state.local && {mode: state.local.mode, state: state.localState}; },
    54        indent: indentFunction(states_, meta)
    55      };
    56      if (meta) for (var prop in meta) if (meta.hasOwnProperty(prop))
    57        mode[prop] = meta[prop];
    58      return mode;
    59    };
    60  
    61    function ensureState(states, name) {
    62      if (!states.hasOwnProperty(name))
    63        throw new Error("Undefined state " + name + " in simple mode");
    64    }
    65  
    66    function toRegex(val, caret) {
    67      if (!val) return /(?:)/;
    68      var flags = "";
    69      if (val instanceof RegExp) {
    70        if (val.ignoreCase) flags = "i";
    71        val = val.source;
    72      } else {
    73        val = String(val);
    74      }
    75      return new RegExp((caret === false ? "" : "^") + "(?:" + val + ")", flags);
    76    }
    77  
    78    function asToken(val) {
    79      if (!val) return null;
    80      if (typeof val == "string") return val.replace(/\./g, " ");
    81      var result = [];
    82      for (var i = 0; i < val.length; i++)
    83        result.push(val[i] && val[i].replace(/\./g, " "));
    84      return result;
    85    }
    86  
    87    function Rule(data, states) {
    88      if (data.next || data.push) ensureState(states, data.next || data.push);
    89      this.regex = toRegex(data.regex);
    90      this.token = asToken(data.token);
    91      this.data = data;
    92    }
    93  
    94    function tokenFunction(states, config) {
    95      return function(stream, state) {
    96        if (state.pending) {
    97          var pend = state.pending.shift();
    98          if (state.pending.length == 0) state.pending = null;
    99          stream.pos += pend.text.length;
   100          return pend.token;
   101        }
   102  
   103        if (state.local) {
   104          if (state.local.end && stream.match(state.local.end)) {
   105            var tok = state.local.endToken || null;
   106            state.local = state.localState = null;
   107            return tok;
   108          } else {
   109            var tok = state.local.mode.token(stream, state.localState), m;
   110            if (state.local.endScan && (m = state.local.endScan.exec(stream.current())))
   111              stream.pos = stream.start + m.index;
   112            return tok;
   113          }
   114        }
   115  
   116        var curState = states[state.state];
   117        for (var i = 0; i < curState.length; i++) {
   118          var rule = curState[i];
   119          var matches = (!rule.data.sol || stream.sol()) && stream.match(rule.regex);
   120          if (matches) {
   121            if (rule.data.next) {
   122              state.state = rule.data.next;
   123            } else if (rule.data.push) {
   124              (state.stack || (state.stack = [])).push(state.state);
   125              state.state = rule.data.push;
   126            } else if (rule.data.pop && state.stack && state.stack.length) {
   127              state.state = state.stack.pop();
   128            }
   129  
   130            if (rule.data.mode)
   131              enterLocalMode(config, state, rule.data.mode, rule.token);
   132            if (rule.data.indent)
   133              state.indent.push(stream.indentation() + config.indentUnit);
   134            if (rule.data.dedent)
   135              state.indent.pop();
   136            if (matches.length > 2) {
   137              state.pending = [];
   138              for (var j = 2; j < matches.length; j++)
   139                if (matches[j])
   140                  state.pending.push({text: matches[j], token: rule.token[j - 1]});
   141              stream.backUp(matches[0].length - (matches[1] ? matches[1].length : 0));
   142              return rule.token[0];
   143            } else if (rule.token && rule.token.join) {
   144              return rule.token[0];
   145            } else {
   146              return rule.token;
   147            }
   148          }
   149        }
   150        stream.next();
   151        return null;
   152      };
   153    }
   154  
   155    function cmp(a, b) {
   156      if (a === b) return true;
   157      if (!a || typeof a != "object" || !b || typeof b != "object") return false;
   158      var props = 0;
   159      for (var prop in a) if (a.hasOwnProperty(prop)) {
   160        if (!b.hasOwnProperty(prop) || !cmp(a[prop], b[prop])) return false;
   161        props++;
   162      }
   163      for (var prop in b) if (b.hasOwnProperty(prop)) props--;
   164      return props == 0;
   165    }
   166  
   167    function enterLocalMode(config, state, spec, token) {
   168      var pers;
   169      if (spec.persistent) for (var p = state.persistentStates; p && !pers; p = p.next)
   170        if (spec.spec ? cmp(spec.spec, p.spec) : spec.mode == p.mode) pers = p;
   171      var mode = pers ? pers.mode : spec.mode || CodeMirror.getMode(config, spec.spec);
   172      var lState = pers ? pers.state : CodeMirror.startState(mode);
   173      if (spec.persistent && !pers)
   174        state.persistentStates = {mode: mode, spec: spec.spec, state: lState, next: state.persistentStates};
   175  
   176      state.localState = lState;
   177      state.local = {mode: mode,
   178                     end: spec.end && toRegex(spec.end),
   179                     endScan: spec.end && spec.forceEnd !== false && toRegex(spec.end, false),
   180                     endToken: token && token.join ? token[token.length - 1] : token};
   181    }
   182  
   183    function indexOf(val, arr) {
   184      for (var i = 0; i < arr.length; i++) if (arr[i] === val) return true;
   185    }
   186  
   187    function indentFunction(states, meta) {
   188      return function(state, textAfter, line) {
   189        if (state.local && state.local.mode.indent)
   190          return state.local.mode.indent(state.localState, textAfter, line);
   191        if (state.indent == null || state.local || meta.dontIndentStates && indexOf(state.state, meta.dontIndentStates) > -1)
   192          return CodeMirror.Pass;
   193  
   194        var pos = state.indent.length - 1, rules = states[state.state];
   195        scan: for (;;) {
   196          for (var i = 0; i < rules.length; i++) {
   197            var rule = rules[i];
   198            if (rule.data.dedent && rule.data.dedentIfLineStart !== false) {
   199              var m = rule.regex.exec(textAfter);
   200              if (m && m[0]) {
   201                pos--;
   202                if (rule.next || rule.push) rules = states[rule.next || rule.push];
   203                textAfter = textAfter.slice(m[0].length);
   204                continue scan;
   205              }
   206            }
   207          }
   208          break;
   209        }
   210        return pos < 0 ? 0 : state.indent[pos];
   211      };
   212    }
   213  });