https://www.kjson.com/static/kj2025/codemirror5.65.2/simple.js

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
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      if (val.unicode) flags += "u"
72      val = val.source;
73    } else {
74      val = String(val);
75    }
76    return new RegExp((caret === false ? "" : "^") + "(?:" + val + ")", flags);
77  }
78
79  function asToken(val) {
80    if (!val) return null;
81    if (val.apply) return val
82    if (typeof val == "string") return val.replace(/\./g, " ");
83    var result = [];
84    for (var i = 0; i < val.length; i++)
85      result.push(val[i] && val[i].replace(/\./g, " "));
86    return result;
87  }
88
89  function Rule(data, states) {
90    if (data.next || data.push) ensureState(states, data.next || data.push);
91    this.regex = toRegex(data.regex);
92    this.token = asToken(data.token);
93    this.data = data;
94  }
95
96  function tokenFunction(states, config) {
97    return function(stream, state) {
98      if (state.pending) {
99        var pend = state.pending.shift();
100        if (state.pending.length == 0) state.pending = null;
101        stream.pos += pend.text.length;
102        return pend.token;
103      }
104
105      if (state.local) {
106        if (state.local.end && stream.match(state.local.end)) {
107          var tok = state.local.endToken || null;
108          state.local = state.localState = null;
109          return tok;
110        } else {
111          var tok = state.local.mode.token(stream, state.localState), m;
112          if (state.local.endScan && (m = state.local.endScan.exec(stream.current())))
113            stream.pos = stream.start + m.index;
114          return tok;
115        }
116      }
117
118      var curState = states[state.state];
119      for (var i = 0; i < curState.length; i++) {
120        var rule = curState[i];
121        var matches = (!rule.data.sol || stream.sol()) && stream.match(rule.regex);
122        if (matches) {
123          if (rule.data.next) {
124            state.state = rule.data.next;
125          } else if (rule.data.push) {
126            (state.stack || (state.stack = [])).push(state.state);
127            state.state = rule.data.push;
128          } else if (rule.data.pop && state.stack && state.stack.length) {
129            state.state = state.stack.pop();
130          }
131
132          if (rule.data.mode)
133            enterLocalMode(config, state, rule.data.mode, rule.token);
134          if (rule.data.indent)
135            state.indent.push(stream.indentation() + config.indentUnit);
136          if (rule.data.dedent)
137            state.indent.pop();
138          var token = rule.token
139          if (token && token.apply) token = token(matches)
140          if (matches.length > 2 && rule.token && typeof rule.token != "string") {
141            for (var j = 2; j < matches.length; j++)
142              if (matches[j])
143                (state.pending || (state.pending = [])).push({text: matches[j], token: rule.token[j - 1]});
144            stream.backUp(matches[0].length - (matches[1] ? matches[1].length : 0));
145            return token[0];
146          } else if (token && token.join) {
147            return token[0];
148          } else {
149            return token;
150          }
151        }
152      }
153      stream.next();
154      return null;
155    };
156  }
157
158  function cmp(a, b) {
159    if (a === b) return true;
160    if (!a || typeof a != "object" || !b || typeof b != "object") return false;

161    var props = 0;
162    for (var prop in a) if (a.hasOwnProperty(prop)) {
163      if (!b.hasOwnProperty(prop) || !cmp(a[prop], b[prop])) return false;
164      props++;
165    }
166    for (var prop in b) if (b.hasOwnProperty(prop)) props--;
167    return props == 0;
168  }
169
170  function enterLocalMode(config, state, spec, token) {
171    var pers;
172    if (spec.persistent) for (var p = state.persistentStates; p && !pers; p = p.next)
173      if (spec.spec ? cmp(spec.spec, p.spec) : spec.mode == p.mode) pers = p;
174    var mode = pers ? pers.mode : spec.mode || CodeMirror.getMode(config, spec.spec);
175    var lState = pers ? pers.state : CodeMirror.startState(mode);
176    if (spec.persistent && !pers)
177      state.persistentStates = {mode: mode, spec: spec.spec, state: lState, next: state.persistentStates};
178
179    state.localState = lState;
180    state.local = {mode: mode,
181                   end: spec.end && toRegex(spec.end),
182                   endScan: spec.end && spec.forceEnd !== false && toRegex(spec.end, false),
183                   endToken: token && token.join ? token[token.length - 1] : token};
184  }
185
186  function indexOf(val, arr) {
187    for (var i = 0; i < arr.length; i++) if (arr[i] === val) return true;
188  }
189
190  function indentFunction(states, meta) {
191    return function(state, textAfter, line) {
192      if (state.local && state.local.mode.indent)
193        return state.local.mode.indent(state.localState, textAfter, line);
194      if (state.indent == null || state.local || meta.dontIndentStates && indexOf(state.state, meta.dontIndentStates) > -1)
195        return CodeMirror.Pass;
196
197      var pos = state.indent.length - 1, rules = states[state.state];
198      scan: for (;;) {
199        for (var i = 0; i < rules.length; i++) {
200          var rule = rules[i];
201          if (rule.data.dedent && rule.data.dedentIfLineStart !== false) {
202            var m = rule.regex.exec(textAfter);
203            if (m && m[0]) {
204              pos--;
205              if (rule.next || rule.push) rules = states[rule.next || rule.push];
206              textAfter = textAfter.slice(m[0].length);
207              continue scan;
208            }
209          }
210        }
211        break;
212      }
213      return pos < 0 ? 0 : state.indent[pos];
214    };
215  }
216});