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// 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];
};
}
});
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