Subversion-Projekte lars-tiefland.ci

// CodeMirror, copyright (c) by Marijn Haverbeke and others

// Distributed under an MIT license: http://codemirror.net/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.defineSimpleMode = function(name, states) {

    CodeMirror.defineMode(name, function(config) {

      return CodeMirror.simpleMode(config, states);

    });

  };

  CodeMirror.simpleMode = function(config, states) {

    ensureState(states, "start");

    var states_ = {}, meta = states.meta || {}, hasIndentation = false;

    for (var state in states) if (state != meta && states.hasOwnProperty(state)) {

      var list = states_[state] = [], orig = states[state];

      for (var i = 0; i < orig.length; i++) {

        var data = orig[i];

        list.push(new Rule(data, states));

        if (data.indent || data.dedent) hasIndentation = true;

      }

    }

    var mode = {

      startState: function() {

        return {state: "start", pending: null,

                local: null, localState: null,

                indent: hasIndentation ? [] : null};

      },

      copyState: function(state) {

        var s = {state: state.state, pending: state.pending,

                 local: state.local, localState: null,

                 indent: state.indent && state.indent.slice(0)};

        if (state.localState)

          s.localState = CodeMirror.copyState(state.local.mode, state.localState);

        if (state.stack)

          s.stack = state.stack.slice(0);

        for (var pers = state.persistentStates; pers; pers = pers.next)

          s.persistentStates = {mode: pers.mode,

                                spec: pers.spec,

                                state: pers.state == state.localState ? s.localState : CodeMirror.copyState(pers.mode, pers.state),

                                next: s.persistentStates};

        return s;

      },

      token: tokenFunction(states_, config),

      innerMode: function(state) { return state.local && {mode: state.local.mode, state: state.localState}; },

      indent: indentFunction(states_, meta)

    };

    if (meta) for (var prop in meta) if (meta.hasOwnProperty(prop))

      mode[prop] = meta[prop];

    return mode;

  };

  function ensureState(states, name) {

    if (!states.hasOwnProperty(name))

      throw new Error("Undefined state " + name + "in simple mode");

  }

  function toRegex(val, caret) {

    if (!val) return /(?:)/;

    var flags = "";

    if (val instanceof RegExp) {

      if (val.ignoreCase) flags = "i";

      val = val.source;

    } else {

      val = String(val);

    }

    return new RegExp((caret === false ? "" : "^") + "(?:" + val + ")", flags);

  }

  function asToken(val) {

    if (!val) return null;

    if (typeof val == "string") return val.replace(/\./g, " ");

    var result = [];

    for (var i = 0; i < val.length; i++)

      result.push(val[i] && val[i].replace(/\./g, " "));

    return result;

  }

  function Rule(data, states) {

    if (data.next || data.push) ensureState(states, data.next || data.push);

    this.regex = toRegex(data.regex);

    this.token = asToken(data.token);

    this.data = data;

  }

  function tokenFunction(states, config) {

    return function(stream, state) {

      if (state.pending) {

        var pend = state.pending.shift();

        if (state.pending.length == 0) state.pending = null;

        stream.pos += pend.text.length;

        return pend.token;

      }

      if (state.local) {

        if (state.local.end && stream.match(state.local.end)) {

          var tok = state.local.endToken || null;

          state.local = state.localState = null;

          return tok;

        } else {

          var tok = state.local.mode.token(stream, state.localState), m;

          if (state.local.endScan && (m = state.local.endScan.exec(stream.current())))

            stream.pos = stream.start + m.index;

          return tok;

        }

      }

      var curState = states[state.state];

      for (var i = 0; i < curState.length; i++) {

        var rule = curState[i];

        var matches = (!rule.data.sol || stream.sol()) && stream.match(rule.regex);

        if (matches) {

          if (rule.data.next) {

            state.state = rule.data.next;

          } else if (rule.data.push) {

            (state.stack || (state.stack = [])).push(state.state);

            state.state = rule.data.push;

          } else if (rule.data.pop && state.stack && state.stack.length) {

            state.state = state.stack.pop();

          }

          if (rule.data.mode)

            enterLocalMode(config, state, rule.data.mode, rule.token);

          if (rule.data.indent)

            state.indent.push(stream.indentation() + config.indentUnit);

          if (rule.data.dedent)

            state.indent.pop();

          if (matches.length > 2) {

            state.pending = [];

            for (var j = 2; j < matches.length; j++)

              if (matches[j])

                state.pending.push({text: matches[j], token: rule.token[j - 1]});

            stream.backUp(matches[0].length - (matches[1] ? matches[1].length : 0));

            return rule.token[0];

          } else if (rule.token && rule.token.join) {

            return rule.token[0];

          } else {

            return rule.token;

          }

        }

      }

      stream.next();

      return null;

    };

  }

  function cmp(a, b) {

    if (a === b) return true;

    if (!a || typeof a != "object" || !b || typeof b != "object") return false;

    var props = 0;

    for (var prop in a) if (a.hasOwnProperty(prop)) {

      if (!b.hasOwnProperty(prop) || !cmp(a[prop], b[prop])) return false;

      props++;

    }

    for (var prop in b) if (b.hasOwnProperty(prop)) props--;

    return props == 0;

  }

  function enterLocalMode(config, state, spec, token) {

    var pers;

    if (spec.persistent) for (var p = state.persistentStates; p && !pers; p = p.next)

      if (spec.spec ? cmp(spec.spec, p.spec) : spec.mode == p.mode) pers = p;

    var mode = pers ? pers.mode : spec.mode || CodeMirror.getMode(config, spec.spec);

    var lState = pers ? pers.state : CodeMirror.startState(mode);

    if (spec.persistent && !pers)

      state.persistentStates = {mode: mode, spec: spec.spec, state: lState, next: state.persistentStates};

    state.localState = lState;

    state.local = {mode: mode,

                   end: spec.end && toRegex(spec.end),

                   endScan: spec.end && spec.forceEnd !== false && toRegex(spec.end, false),

                   endToken: token && token.join ? token[token.length - 1] : token};

  }

  function indexOf(val, arr) {

    for (var i = 0; i < arr.length; i++) if (arr[i] === val) return true;

  }

  function indentFunction(states, meta) {

    return function(state, textAfter, line) {

      if (state.local && state.local.mode.indent)

        return state.local.mode.indent(state.localState, textAfter, line);

      if (state.indent == null || state.local || meta.dontIndentStates && indexOf(state.state, meta.dontIndentStates) > -1)

        return CodeMirror.Pass;

      var pos = state.indent.length - 1, rules = states[state.state];

      scan: for (;;) {

        for (var i = 0; i < rules.length; i++) {

          var rule = rules[i];

          if (rule.data.dedent && rule.data.dedentIfLineStart !== false) {

            var m = rule.regex.exec(textAfter);

            if (m && m[0]) {

              pos--;

              if (rule.next || rule.push) rules = states[rule.next || rule.push];

              textAfter = textAfter.slice(m[0].length);

              continue scan;

            }

          }

        }

        break;

      }

      return pos < 0 ? 0 : state.indent[pos];

    };

  }

});