simple.js (8099B)
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("resource://devtools/client/shared/sourceeditor/codemirror/lib/codemirror.js")); 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 (val.apply) return val 81 if (typeof val == "string") return val.replace(/\./g, " "); 82 var result = []; 83 for (var i = 0; i < val.length; i++) 84 result.push(val[i] && val[i].replace(/\./g, " ")); 85 return result; 86 } 87 88 function Rule(data, states) { 89 if (data.next || data.push) ensureState(states, data.next || data.push); 90 this.regex = toRegex(data.regex); 91 this.token = asToken(data.token); 92 this.data = data; 93 } 94 95 function tokenFunction(states, config) { 96 return function(stream, state) { 97 if (state.pending) { 98 var pend = state.pending.shift(); 99 if (state.pending.length == 0) state.pending = null; 100 stream.pos += pend.text.length; 101 return pend.token; 102 } 103 104 if (state.local) { 105 if (state.local.end && stream.match(state.local.end)) { 106 var tok = state.local.endToken || null; 107 state.local = state.localState = null; 108 return tok; 109 } else { 110 var tok = state.local.mode.token(stream, state.localState), m; 111 if (state.local.endScan && (m = state.local.endScan.exec(stream.current()))) 112 stream.pos = stream.start + m.index; 113 return tok; 114 } 115 } 116 117 var curState = states[state.state]; 118 for (var i = 0; i < curState.length; i++) { 119 var rule = curState[i]; 120 var matches = (!rule.data.sol || stream.sol()) && stream.match(rule.regex); 121 if (matches) { 122 if (rule.data.next) { 123 state.state = rule.data.next; 124 } else if (rule.data.push) { 125 (state.stack || (state.stack = [])).push(state.state); 126 state.state = rule.data.push; 127 } else if (rule.data.pop && state.stack && state.stack.length) { 128 state.state = state.stack.pop(); 129 } 130 131 if (rule.data.mode) 132 enterLocalMode(config, state, rule.data.mode, rule.token); 133 if (rule.data.indent) 134 state.indent.push(stream.indentation() + config.indentUnit); 135 if (rule.data.dedent) 136 state.indent.pop(); 137 var token = rule.token 138 if (token && token.apply) token = token(matches) 139 if (matches.length > 2 && rule.token && typeof rule.token != "string") { 140 state.pending = []; 141 for (var j = 2; j < matches.length; j++) 142 if (matches[j]) 143 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 });