214 lines
7.7 KiB
JavaScript
214 lines
7.7 KiB
JavaScript
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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: http://codemirror.net/LICENSE
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(function(mod) {
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if (typeof exports == "object" && typeof module == "object") // CommonJS
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mod(require("../../lib/codemirror"));
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else if (typeof define == "function" && define.amd) // AMD
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define(["../../lib/codemirror"], mod);
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else // Plain browser env
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mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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CodeMirror.defineSimpleMode = function(name, states) {
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CodeMirror.defineMode(name, function(config) {
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return CodeMirror.simpleMode(config, states);
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});
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};
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CodeMirror.simpleMode = function(config, states) {
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ensureState(states, "start");
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var states_ = {}, meta = states.meta || {}, hasIndentation = false;
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for (var state in states) if (state != meta && states.hasOwnProperty(state)) {
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var list = states_[state] = [], orig = states[state];
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for (var i = 0; i < orig.length; i++) {
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var data = orig[i];
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list.push(new Rule(data, states));
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if (data.indent || data.dedent) hasIndentation = true;
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}
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}
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var mode = {
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startState: function() {
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return {state: "start", pending: null,
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local: null, localState: null,
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indent: hasIndentation ? [] : null};
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},
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copyState: function(state) {
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var s = {state: state.state, pending: state.pending,
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local: state.local, localState: null,
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indent: state.indent && state.indent.slice(0)};
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if (state.localState)
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s.localState = CodeMirror.copyState(state.local.mode, state.localState);
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if (state.stack)
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s.stack = state.stack.slice(0);
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for (var pers = state.persistentStates; pers; pers = pers.next)
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s.persistentStates = {mode: pers.mode,
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spec: pers.spec,
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state: pers.state == state.localState ? s.localState : CodeMirror.copyState(pers.mode, pers.state),
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next: s.persistentStates};
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return s;
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},
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token: tokenFunction(states_, config),
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innerMode: function(state) { return state.local && {mode: state.local.mode, state: state.localState}; },
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indent: indentFunction(states_, meta)
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};
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if (meta) for (var prop in meta) if (meta.hasOwnProperty(prop))
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mode[prop] = meta[prop];
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return mode;
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};
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function ensureState(states, name) {
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if (!states.hasOwnProperty(name))
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throw new Error("Undefined state " + name + " in simple mode");
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}
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function toRegex(val, caret) {
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if (!val) return /(?:)/;
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var flags = "";
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if (val instanceof RegExp) {
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if (val.ignoreCase) flags = "i";
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val = val.source;
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} else {
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val = String(val);
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}
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return new RegExp((caret === false ? "" : "^") + "(?:" + val + ")", flags);
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}
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function asToken(val) {
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if (!val) return null;
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if (typeof val == "string") return val.replace(/\./g, " ");
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var result = [];
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for (var i = 0; i < val.length; i++)
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result.push(val[i] && val[i].replace(/\./g, " "));
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return result;
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}
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function Rule(data, states) {
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if (data.next || data.push) ensureState(states, data.next || data.push);
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this.regex = toRegex(data.regex);
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this.token = asToken(data.token);
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this.data = data;
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}
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function tokenFunction(states, config) {
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return function(stream, state) {
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if (state.pending) {
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var pend = state.pending.shift();
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if (state.pending.length == 0) state.pending = null;
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stream.pos += pend.text.length;
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return pend.token;
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}
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if (state.local) {
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if (state.local.end && stream.match(state.local.end)) {
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var tok = state.local.endToken || null;
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state.local = state.localState = null;
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return tok;
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} else {
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var tok = state.local.mode.token(stream, state.localState), m;
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if (state.local.endScan && (m = state.local.endScan.exec(stream.current())))
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stream.pos = stream.start + m.index;
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return tok;
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}
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}
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var curState = states[state.state];
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for (var i = 0; i < curState.length; i++) {
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var rule = curState[i];
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var matches = (!rule.data.sol || stream.sol()) && stream.match(rule.regex);
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if (matches) {
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if (rule.data.next) {
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state.state = rule.data.next;
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} else if (rule.data.push) {
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(state.stack || (state.stack = [])).push(state.state);
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state.state = rule.data.push;
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} else if (rule.data.pop && state.stack && state.stack.length) {
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state.state = state.stack.pop();
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}
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if (rule.data.mode)
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enterLocalMode(config, state, rule.data.mode, rule.token);
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if (rule.data.indent)
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state.indent.push(stream.indentation() + config.indentUnit);
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if (rule.data.dedent)
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state.indent.pop();
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if (matches.length > 2) {
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state.pending = [];
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for (var j = 2; j < matches.length; j++)
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if (matches[j])
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state.pending.push({text: matches[j], token: rule.token[j - 1]});
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stream.backUp(matches[0].length - (matches[1] ? matches[1].length : 0));
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return rule.token[0];
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} else if (rule.token && rule.token.join) {
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return rule.token[0];
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} else {
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return rule.token;
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}
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}
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}
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stream.next();
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return null;
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};
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}
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function cmp(a, b) {
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if (a === b) return true;
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if (!a || typeof a != "object" || !b || typeof b != "object") return false;
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var props = 0;
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for (var prop in a) if (a.hasOwnProperty(prop)) {
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if (!b.hasOwnProperty(prop) || !cmp(a[prop], b[prop])) return false;
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props++;
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}
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for (var prop in b) if (b.hasOwnProperty(prop)) props--;
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return props == 0;
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}
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function enterLocalMode(config, state, spec, token) {
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var pers;
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if (spec.persistent) for (var p = state.persistentStates; p && !pers; p = p.next)
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if (spec.spec ? cmp(spec.spec, p.spec) : spec.mode == p.mode) pers = p;
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var mode = pers ? pers.mode : spec.mode || CodeMirror.getMode(config, spec.spec);
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var lState = pers ? pers.state : CodeMirror.startState(mode);
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if (spec.persistent && !pers)
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state.persistentStates = {mode: mode, spec: spec.spec, state: lState, next: state.persistentStates};
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state.localState = lState;
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state.local = {mode: mode,
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end: spec.end && toRegex(spec.end),
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endScan: spec.end && spec.forceEnd !== false && toRegex(spec.end, false),
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endToken: token && token.join ? token[token.length - 1] : token};
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}
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function indexOf(val, arr) {
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for (var i = 0; i < arr.length; i++) if (arr[i] === val) return true;
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}
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function indentFunction(states, meta) {
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return function(state, textAfter, line) {
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if (state.local && state.local.mode.indent)
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return state.local.mode.indent(state.localState, textAfter, line);
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if (state.indent == null || state.local || meta.dontIndentStates && indexOf(state.state, meta.dontIndentStates) > -1)
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return CodeMirror.Pass;
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var pos = state.indent.length - 1, rules = states[state.state];
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scan: for (;;) {
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for (var i = 0; i < rules.length; i++) {
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var rule = rules[i];
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if (rule.data.dedent && rule.data.dedentIfLineStart !== false) {
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var m = rule.regex.exec(textAfter);
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if (m && m[0]) {
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pos--;
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if (rule.next || rule.push) rules = states[rule.next || rule.push];
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textAfter = textAfter.slice(m[0].length);
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continue scan;
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}
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}
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}
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break;
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}
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return pos < 0 ? 0 : state.indent[pos];
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};
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}
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});
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