笙默考试管理系统-MyExamTest----codemirror（68）

笙默考试管理系统-MyExamTest----codemirror（68）

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目录

一、 笙默考试管理系统-MyExamTest----codemirror

三、 笙默考试管理系统-MyExamTest----codemirror

四、 笙默考试管理系统-MyExamTest----codemirror

五、 笙默考试管理系统-MyExamTest----codemirror

• 笙默考试管理系统-MyExamTest----codemirror

??}

????// Combinator utils

????var cx = {state: null, column: null, marked: null, cc: null};

????function pass() {

????????for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);

????}

????function cont() {

????????pass.apply(null, arguments);

????????return true;

????}

????function register(varname) {

????????var state = cx.state;

????????if (state.context) {

• ???????笙默考试管理系统-MyExamTest----codemirror

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???cx.marked = "def";

????????????for (var v = state.localVars; v; v = v.next)

????????????????if (v.name == varname) return;

????????????state.localVars = {name: varname, next: state.localVars};

????????}

????}

????// Combinators

????var defaultVars = {name: "this", next: {name: "arguments"}};

????function pushcontext() {

????????if (!cx.state.context) cx.state.localVars = defaultVars;

????????cx.state.context = {prev: cx.state.context, vars: cx.state.localVars};

????}

????function popcontext() {

????????cx.state.localVars = cx.state.context.vars;

????????cx.state.context = cx.state.context.prev;

}

• 笙默考试管理系统-MyExamTest----codemirror

????function pushlex(type, info) {

????????var result = function() {

????????????var state = cx.state;

????????????state.lexical = new JSLexical(state.indented, cx.stream.column(), type, null, state.lexical, info)

????????};

????????result.lex = true;

????????return result;

????}

????function poplex() {

????????var state = cx.state;

????????if (state.lexical.prev) {

????????????if (state.lexical.type == ")")

????????????????state.indented = state.lexical.indented;

????????????state.lexical = state.lexical.prev;

????????}

}

• 笙默考试管理系统-MyExamTest----codemirror

????poplex.lex = true;

????function expect(wanted) {

????????return function expecting(type) {

????????????if (type == wanted) return cont();

????????????else if (wanted == ";") return pass();

????????????else return cont(arguments.callee);

????????};

????}

????function statement(type) {

????????if (type == "var") return cont(pushlex("vardef"), vardef1, expect(";"), poplex);

????????if (type == "keyword a") return cont(pushlex("form"), expression, statement, poplex);

????????if (type == "keyword b") return cont(pushlex("form"), statement, poplex);

????????if (type == "{") return cont(pushlex("}"), block, poplex);

????????if (type == ";") return cont();

????????if (type == "function") return cont(functiondef);

????????if (type == "for") return cont(pushlex("form"), expect("("), pushlex(")"), forspec1, expect(")"),

????????????poplex, statement, poplex);

????????if (type == "variable") return cont(pushlex("stat"), maybelabel);

• 笙默考试管理系统-MyExamTest----codemirror

????????if (type == "switch") return cont(pushlex("form"), expression, pushlex("}", "switch"), expect("{"),

????????????block, poplex, poplex);

????????if (type == "case") return cont(expression, expect(":"));

????????if (type == "default") return cont(expect(":"));

????????if (type == "catch") return cont(pushlex("form"), pushcontext, expect("("), funarg, expect(")"),

????????????statement, poplex, popcontext);

????????return pass(pushlex("stat"), expression, expect(";"), poplex);

????}

????function expression(type) {

????????if (atomicTypes.hasOwnProperty(type)) return cont(maybeoperator);

????????if (type == "function") return cont(functiondef);

????????if (type == "keyword c") return cont(maybeexpression);

????????if (type == "(") return cont(pushlex(")"), expression, expect(")"), poplex, maybeoperator);

????????if (type == "operator") return cont(expression);

????????if (type == "[") return cont(pushlex("]"), commasep(expression, "]"), poplex, maybeoperator);

????????if (type == "{") return cont(pushlex("}"), commasep(objprop, "}"), poplex, maybeoperator);

????????return cont();

????}

????function maybeexpression(type) {

????????if (type.match(/[;\}\)\],]/)) return pass();

????????return pass(expression);

????}

????function maybeoperator(type, value) {

????????if (type == "operator" && /\+\+|--/.test(value)) return cont(maybeoperator);

????????if (type == "operator") return cont(expression);

????????if (type == ";") return;

????????if (type == "(") return cont(pushlex(")"), commasep(expression, ")"), poplex, maybeoperator);

????????if (type == ".") return cont(property, maybeoperator);

????????if (type == "[") return cont(pushlex("]"), expression, expect("]"), poplex, maybeoperator);

????}

????function maybelabel(type) {

????????if (type == ":") return cont(poplex, statement);

????????return pass(maybeoperator, expect(";"), poplex);

????}

????function property(type) {

????????if (type == "variable") {cx.marked = "property"; return cont();}

????}

????function objprop(type) {

????????if (type == "variable") cx.marked = "property";

????????if (atomicTypes.hasOwnProperty(type)) return cont(expect(":"), expression);

????}

????function commasep(what, end) {

????????function proceed(type) {

????????????if (type == ",") return cont(what, proceed);

????????????if (type == end) return cont();

????????????return cont(expect(end));

????????}

????????return function commaSeparated(type) {

????????????if (type == end) return cont();

????????????else return pass(what, proceed);

????????};