1 |
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2 |
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3 |
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4 | (function(mod) {
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5 | if (typeof exports == "object" && typeof module == "object")
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6 | mod(require("../../lib/codemirror"));
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7 | else if (typeof define == "function" && define.amd)
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8 | define(["../../lib/codemirror"], mod);
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9 | else
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10 | mod(CodeMirror);
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11 | })(function(CodeMirror) {
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12 | "use strict";
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13 |
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14 | CodeMirror.defineSimpleMode = function(name, states) {
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15 | CodeMirror.defineMode(name, function(config) {
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16 | return CodeMirror.simpleMode(config, states);
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17 | });
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18 | };
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19 |
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20 | CodeMirror.simpleMode = function(config, states) {
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21 | ensureState(states, "start");
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22 | var states_ = {}, meta = states.meta || {}, hasIndentation = false;
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23 | for (var state in states) if (state != meta && states.hasOwnProperty(state)) {
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24 | var list = states_[state] = [], orig = states[state];
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25 | for (var i = 0; i < orig.length; i++) {
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26 | var data = orig[i];
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27 | list.push(new Rule(data, states));
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28 | if (data.indent || data.dedent) hasIndentation = true;
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29 | }
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30 | }
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31 | var mode = {
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32 | startState: function() {
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33 | return {state: "start", pending: null,
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34 | local: null, localState: null,
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35 | indent: hasIndentation ? [] : null};
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36 | },
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37 | copyState: function(state) {
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38 | var s = {state: state.state, pending: state.pending,
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39 | local: state.local, localState: null,
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40 | indent: state.indent && state.indent.slice(0)};
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41 | if (state.localState)
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42 | s.localState = CodeMirror.copyState(state.local.mode, state.localState);
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43 | if (state.stack)
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44 | s.stack = state.stack.slice(0);
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45 | for (var pers = state.persistentStates; pers; pers = pers.next)
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46 | s.persistentStates = {mode: pers.mode,
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47 | spec: pers.spec,
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48 | state: pers.state == state.localState ? s.localState : CodeMirror.copyState(pers.mode, pers.state),
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49 | next: s.persistentStates};
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50 | return s;
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51 | },
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52 | token: tokenFunction(states_, config),
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53 | innerMode: function(state) { return state.local && {mode: state.local.mode, state: state.localState}; },
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54 | indent: indentFunction(states_, meta)
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55 | };
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56 | if (meta) for (var prop in meta) if (meta.hasOwnProperty(prop))
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57 | mode[prop] = meta[prop];
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58 | return mode;
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59 | };
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60 |
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61 | function ensureState(states, name) {
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62 | if (!states.hasOwnProperty(name))
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63 | throw new Error("Undefined state " + name + " in simple mode");
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64 | }
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65 |
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66 | function toRegex(val, caret) {
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67 | if (!val) return /(?:)/;
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68 | var flags = "";
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69 | if (val instanceof RegExp) {
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70 | if (val.ignoreCase) flags = "i";
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71 | val = val.source;
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72 | } else {
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73 | val = String(val);
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74 | }
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75 | return new RegExp((caret === false ? "" : "^") + "(?:" + val + ")", flags);
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76 | }
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77 |
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78 | function asToken(val) {
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79 | if (!val) return null;
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80 | if (val.apply) return val
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81 | if (typeof val == "string") return val.replace(/\./g, " ");
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82 | var result = [];
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83 | for (var i = 0; i < val.length; i++)
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84 | result.push(val[i] && val[i].replace(/\./g, " "));
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85 | return result;
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86 | }
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87 |
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88 | function Rule(data, states) {
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89 | if (data.next || data.push) ensureState(states, data.next || data.push);
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90 | this.regex = toRegex(data.regex);
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91 | this.token = asToken(data.token);
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92 | this.data = data;
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93 | }
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94 |
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95 | function tokenFunction(states, config) {
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96 | return function(stream, state) {
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97 | if (state.pending) {
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98 | var pend = state.pending.shift();
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99 | if (state.pending.length == 0) state.pending = null;
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100 | stream.pos += pend.text.length;
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101 | return pend.token;
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102 | }
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103 |
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104 | if (state.local) {
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105 | if (state.local.end && stream.match(state.local.end)) {
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106 | var tok = state.local.endToken || null;
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107 | state.local = state.localState = null;
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108 | return tok;
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109 | } else {
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110 | var tok = state.local.mode.token(stream, state.localState), m;
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111 | if (state.local.endScan && (m = state.local.endScan.exec(stream.current())))
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112 | stream.pos = stream.start + m.index;
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113 | return tok;
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114 | }
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115 | }
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116 |
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117 | var curState = states[state.state];
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118 | for (var i = 0; i < curState.length; i++) {
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119 | var rule = curState[i];
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120 | var matches = (!rule.data.sol || stream.sol()) && stream.match(rule.regex);
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121 | if (matches) {
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122 | if (rule.data.next) {
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123 | state.state = rule.data.next;
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124 | } else if (rule.data.push) {
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125 | (state.stack || (state.stack = [])).push(state.state);
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126 | state.state = rule.data.push;
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127 | } else if (rule.data.pop && state.stack && state.stack.length) {
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128 | state.state = state.stack.pop();
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129 | }
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130 |
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131 | if (rule.data.mode)
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132 | enterLocalMode(config, state, rule.data.mode, rule.token);
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133 | if (rule.data.indent)
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134 | state.indent.push(stream.indentation() + config.indentUnit);
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135 | if (rule.data.dedent)
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136 | state.indent.pop();
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137 | var token = rule.token
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138 | if (token && token.apply) token = token(matches)
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139 | if (matches.length > 2 && rule.token && typeof rule.token != "string") {
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140 | state.pending = [];
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141 | for (var j = 2; j < matches.length; j++)
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142 | if (matches[j])
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143 | state.pending.push({text: matches[j], token: rule.token[j - 1]});
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144 | stream.backUp(matches[0].length - (matches[1] ? matches[1].length : 0));
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145 | return token[0];
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146 | } else if (token && token.join) {
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147 | return token[0];
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148 | } else {
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149 | return token;
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150 | }
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151 | }
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152 | }
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153 | stream.next();
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154 | return null;
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155 | };
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156 | }
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157 |
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158 | function cmp(a, b) {
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159 | if (a === b) return true;
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160 | if (!a || typeof a != "object" || !b || typeof b != "object") return false;
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161 | var props = 0;
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162 | for (var prop in a) if (a.hasOwnProperty(prop)) {
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163 | if (!b.hasOwnProperty(prop) || !cmp(a[prop], b[prop])) return false;
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164 | props++;
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165 | }
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166 | for (var prop in b) if (b.hasOwnProperty(prop)) props--;
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167 | return props == 0;
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168 | }
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169 |
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170 | function enterLocalMode(config, state, spec, token) {
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171 | var pers;
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172 | if (spec.persistent) for (var p = state.persistentStates; p && !pers; p = p.next)
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173 | if (spec.spec ? cmp(spec.spec, p.spec) : spec.mode == p.mode) pers = p;
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174 | var mode = pers ? pers.mode : spec.mode || CodeMirror.getMode(config, spec.spec);
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175 | var lState = pers ? pers.state : CodeMirror.startState(mode);
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176 | if (spec.persistent && !pers)
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177 | state.persistentStates = {mode: mode, spec: spec.spec, state: lState, next: state.persistentStates};
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178 |
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179 | state.localState = lState;
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180 | state.local = {mode: mode,
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181 | end: spec.end && toRegex(spec.end),
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182 | endScan: spec.end && spec.forceEnd !== false && toRegex(spec.end, false),
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183 | endToken: token && token.join ? token[token.length - 1] : token};
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184 | }
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185 |
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186 | function indexOf(val, arr) {
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187 | for (var i = 0; i < arr.length; i++) if (arr[i] === val) return true;
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188 | }
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189 |
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190 | function indentFunction(states, meta) {
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191 | return function(state, textAfter, line) {
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192 | if (state.local && state.local.mode.indent)
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193 | return state.local.mode.indent(state.localState, textAfter, line);
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194 | if (state.indent == null || state.local || meta.dontIndentStates && indexOf(state.state, meta.dontIndentStates) > -1)
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195 | return CodeMirror.Pass;
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196 |
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197 | var pos = state.indent.length - 1, rules = states[state.state];
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198 | scan: for (;;) {
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199 | for (var i = 0; i < rules.length; i++) {
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200 | var rule = rules[i];
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201 | if (rule.data.dedent && rule.data.dedentIfLineStart !== false) {
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202 | var m = rule.regex.exec(textAfter);
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203 | if (m && m[0]) {
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204 | pos--;
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205 | if (rule.next || rule.push) rules = states[rule.next || rule.push];
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206 | textAfter = textAfter.slice(m[0].length);
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207 | continue scan;
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208 | }
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209 | }
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210 | }
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211 | break;
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212 | }
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213 | return pos < 0 ? 0 : state.indent[pos];
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214 | };
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215 | }
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216 | });
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