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eval5

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eval5 - npm Package Compare versions

Comparing version 1.3.1 to 1.4.0

674

dist/cjs/interpreter/main.js

@@ -16,3 +16,3 @@ "use strict";

var version = "1.3.1";
var version = "1.4.0";

@@ -33,4 +33,2 @@ function defineFunctionName(func, name) {

var EmptyStatementReturn = Symbol("EmptyStatementReturn");
var IEval = Symbol("IEval");
var IFunction = Symbol("IFunction");

@@ -41,2 +39,100 @@ function isFunction(func) {

var InternalInternalReflection =
/*#__PURE__*/
function () {
function InternalInternalReflection(interpreter) {
this.interpreter = interpreter;
}
var _proto = InternalInternalReflection.prototype;
_proto.generator = function generator() {
var interpreter = this.interpreter;
function getCurrentScope() {
return this.getCurrentScope();
}
function getGlobalScope() {
return this.getGlobalScope();
}
function getCurrentContext() {
return this.getCurrentContext();
}
return {
getOptions: interpreter.getOptions.bind(interpreter),
getCurrentScope: getCurrentScope.bind(interpreter),
getGlobalScope: getGlobalScope.bind(interpreter),
getCurrentContext: getCurrentContext.bind(interpreter),
getExecStartTime: interpreter.getExecStartTime.bind(interpreter)
};
};
return InternalInternalReflection;
}();
function internalEval(reflection, code, useGlobalScope) {
if (useGlobalScope === void 0) {
useGlobalScope = true;
}
if (!(reflection instanceof InternalInternalReflection)) {
throw new Error("Illegal call");
}
if (typeof code !== "string") return code;
if (!code) return void 0;
var instance = reflection.generator();
var opts = instance.getOptions();
var options = {
timeout: opts.timeout,
_initEnv: function _initEnv() {
// set caller context
if (!useGlobalScope) {
this.setCurrentContext(instance.getCurrentContext());
} // share timeout
this.execStartTime = instance.getExecStartTime();
this.execEndTime = this.execStartTime;
}
};
var currentScope = useGlobalScope ? instance.getGlobalScope() : instance.getCurrentScope();
var interpreter = new Interpreter(currentScope, options);
return interpreter.evaluate(code);
}
Object.defineProperty(internalEval, "__IS_EVAL_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false
});
function internalFunction(reflection) {
if (!(reflection instanceof InternalInternalReflection)) {
throw new Error("Illegal call");
}
var instance = reflection.generator();
for (var _len = arguments.length, params = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
params[_key - 1] = arguments[_key];
}
var code = params.pop();
var interpreter = new Interpreter(instance.getGlobalScope(), instance.getOptions());
var wrapCode = "\n\t\t (function anonymous(" + params.join(",") + "){\n\t\t " + code + "\n\t\t });\n\t\t ";
return interpreter.evaluate(wrapCode);
}
Object.defineProperty(internalFunction, "__IS_FUNCTION_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false
});
var Return = function Return(value) {

@@ -53,3 +149,16 @@ this.value = value;

};
/**
* scope chain
*
* superScope
* ↓
* rootScope
* ↓
* globalScope
* ↓
* functionScope
*
*/
var Scope = function Scope(data, parent, name) {

@@ -100,3 +209,5 @@ if (parent === void 0) {

escape: escape,
unescape: unescape
unescape: unescape,
eval: internalEval,
Function: internalFunction
}; // ES5 Object

@@ -162,12 +273,14 @@

timeout: options.timeout || 0,
initEnv: options.initEnv
rootContext: options.rootContext,
globalContextInFunction: options.globalContextInFunction === undefined ? Interpreter.globalContextInFunction : options.globalContextInFunction,
_initEnv: options._initEnv
};
this.context = context;
this.context = context || Object.create(null);
this.callStack = [];
this.initEnvironment(context);
this.initEnvironment(this.context);
}
var _proto = Interpreter.prototype;
var _proto2 = Interpreter.prototype;
_proto.initEnvironment = function initEnvironment(ctx) {
_proto2.initEnvironment = function initEnvironment(ctx) {
var scope; //init global scope

@@ -178,20 +291,16 @@

} else {
var superScope = this.getSuperScope(ctx); // replace Interpreter.eval and Interpreter.Function
var rootScope = null;
var superScope = this.createSuperScope(ctx);
Object.keys(ctx).forEach(function (key) {
if (ctx[key] === IEval) {
ctx[key] = superScope.data[IEval];
}
if (this.options.rootContext) {
rootScope = new Scope(this.options.rootContext, superScope, "rootScope");
}
if (ctx[key] === IFunction) {
ctx[key] = superScope.data[IFunction];
}
});
scope = new Scope(ctx, superScope, "root");
scope = new Scope(ctx, rootScope || superScope, "globalScope");
}
this.rootScope = scope;
this.currentScope = this.rootScope; //init global context == this
this.globalScope = scope;
this.currentScope = this.globalScope; //init global context to this
this.rootContext = scope.data;
this.globalContext = scope.data;
this.currentContext = scope.data; // collect var/function declare

@@ -203,69 +312,48 @@

this.execEndTime = this.execStartTime;
var initEnv = this.options.initEnv;
var _initEnv = this.options._initEnv;
if (initEnv) {
initEnv(this);
if (_initEnv) {
_initEnv.call(this);
}
};
_proto.isInterruptThrow = function isInterruptThrow(err) {
return err instanceof _messages.InterruptThrowError || err instanceof _messages.InterruptThrowReferenceError || err instanceof _messages.InterruptThrowSyntaxError;
_proto2.getExecStartTime = function getExecStartTime() {
return this.execStartTime;
};
_proto.getSuperScope = function getSuperScope(ctx) {
var _this = this;
_proto2.getExecutionTime = function getExecutionTime() {
return this.execEndTime - this.execStartTime;
};
var data = Object.assign({}, BuildInObjects);
_proto2.setExecTimeout = function setExecTimeout(timeout) {
if (timeout === void 0) {
timeout = 0;
}
data.eval = function (code, useGlobalScope) {
if (useGlobalScope === void 0) {
useGlobalScope = true;
}
this.options.timeout = timeout;
};
if (typeof code !== "string") return code;
if (!code) return void 0;
var options = {
timeout: _this.options.timeout,
initEnv: function initEnv(inst) {
// set caller context
if (!useGlobalScope) {
inst.setCurrentContext(_this.getCurrentContext());
}
_proto2.getOptions = function getOptions() {
return this.options;
};
inst.execStartTime = _this.execStartTime;
inst.execEndTime = inst.execStartTime;
}
};
var currentScope = useGlobalScope ? _this.rootScope : _this.getCurrentScope();
var interpreter = new Interpreter(currentScope, options);
return interpreter.evaluate(code);
};
_proto2.getGlobalScope = function getGlobalScope() {
return this.globalScope;
};
Object.defineProperty(data.eval, "__IS_EVAL_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false
});
_proto2.getCurrentScope = function getCurrentScope() {
return this.currentScope;
};
data.Function = function () {
for (var _len = arguments.length, params = new Array(_len), _key = 0; _key < _len; _key++) {
params[_key] = arguments[_key];
}
_proto2.getCurrentContext = function getCurrentContext() {
return this.currentContext;
};
var code = params.pop();
var interpreter = new Interpreter(_this.rootScope, _this.options);
var wrapCode = "\n\t\t (function anonymous(" + params.join(",") + "){\n\t\t " + code + "\n\t\t });\n\t\t ";
return interpreter.evaluate(wrapCode);
};
_proto2.isInterruptThrow = function isInterruptThrow(err) {
return err instanceof _messages.InterruptThrowError || err instanceof _messages.InterruptThrowReferenceError || err instanceof _messages.InterruptThrowSyntaxError;
};
Object.defineProperty(data.Function, "__IS_FUNCTION_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false
});
_proto2.createSuperScope = function createSuperScope(ctx) {
var data = Object.assign({}, BuildInObjects);
var buildInObjectKeys = Object.keys(data);
data[IEval] = data.eval;
data[IFunction] = data.Function;
buildInObjectKeys.forEach(function (key) {

@@ -276,14 +364,14 @@ if (key in ctx) {

});
return new Scope(data, null, "superRoot");
return new Scope(data, null, "superScope");
};
_proto.setCurrentContext = function setCurrentContext(ctx) {
_proto2.setCurrentContext = function setCurrentContext(ctx) {
this.currentContext = ctx;
};
_proto.setCurrentScope = function setCurrentScope(scope) {
_proto2.setCurrentScope = function setCurrentScope(scope) {
this.currentScope = scope;
};
_proto.evaluate = function evaluate(code) {
_proto2.evaluate = function evaluate(code) {
if (code === void 0) {

@@ -303,7 +391,7 @@ code = "";

_proto.appendCode = function appendCode(code) {
_proto2.appendCode = function appendCode(code) {
return this.evaluate(code);
};
_proto.evaluateNode = function evaluateNode(node, source) {
_proto2.evaluateNode = function evaluateNode(node, source) {
if (source === void 0) {

@@ -336,7 +424,3 @@ source = "";

_proto.getExecutionTime = function getExecutionTime() {
return this.execEndTime - this.execStartTime;
};
_proto.createErrorMessage = function createErrorMessage(msg, value, node) {
_proto2.createErrorMessage = function createErrorMessage(msg, value, node) {
var message = msg[1].replace("%0", String(value));

@@ -351,23 +435,15 @@

_proto.createError = function createError(message, error) {
_proto2.createError = function createError(message, error) {
return new error(message);
};
_proto.createThrowError = function createThrowError(message, error) {
_proto2.createThrowError = function createThrowError(message, error) {
return this.createError(message, error);
};
_proto.createInternalThrowError = function createInternalThrowError(msg, value, node) {
_proto2.createInternalThrowError = function createInternalThrowError(msg, value, node) {
return this.createError(this.createErrorMessage(msg, value, node), msg[2]);
};
_proto.setExecTimeout = function setExecTimeout(timeout) {
if (timeout === void 0) {
timeout = 0;
}
this.options.timeout = timeout;
};
_proto.checkTimeout = function checkTimeout() {
_proto2.checkTimeout = function checkTimeout() {
if (!this.isRunning) return false;

@@ -384,3 +460,3 @@ var timeout = this.options.timeout || 0;

_proto.getNodePosition = function getNodePosition(node) {
_proto2.getNodePosition = function getNodePosition(node) {
if (node) {

@@ -395,4 +471,4 @@ var errorCode = ""; //this.source.slice(node.start, node.end);

_proto.createClosure = function createClosure(node) {
var _this2 = this;
_proto2.createClosure = function createClosure(node) {
var _this = this;

@@ -548,9 +624,9 @@ var closure;

return function () {
var timeout = _this2.options.timeout;
var timeout = _this.options.timeout;
if (timeout && timeout > 0 && _this2.checkTimeout()) {
throw _this2.createInternalThrowError(_messages.Messages.ExecutionTimeOutError, timeout, null);
if (timeout && timeout > 0 && _this.checkTimeout()) {
throw _this.createInternalThrowError(_messages.Messages.ExecutionTimeOutError, timeout, null);
}
_this2.lastExecNode = node;
_this.lastExecNode = node;
return closure.apply(void 0, arguments);

@@ -561,4 +637,4 @@ };

_proto.binaryExpressionHandler = function binaryExpressionHandler(node) {
var _this3 = this;
_proto2.binaryExpressionHandler = function binaryExpressionHandler(node) {
var _this2 = this;

@@ -639,3 +715,3 @@ var leftExpression = this.createClosure(node.left);

default:
throw _this3.createInternalThrowError(_messages.Messages.BinaryOperatorSyntaxError, node.operator, node);
throw _this2.createInternalThrowError(_messages.Messages.BinaryOperatorSyntaxError, node.operator, node);
}

@@ -646,4 +722,4 @@ };

_proto.logicalExpressionHandler = function logicalExpressionHandler(node) {
var _this4 = this;
_proto2.logicalExpressionHandler = function logicalExpressionHandler(node) {
var _this3 = this;

@@ -661,10 +737,19 @@ var leftExpression = this.createClosure(node.left);

default:
throw _this4.createInternalThrowError(_messages.Messages.LogicalOperatorSyntaxError, node.operator, node);
throw _this3.createInternalThrowError(_messages.Messages.LogicalOperatorSyntaxError, node.operator, node);
}
};
};
_proto2.isRootScope = function isRootScope(node) {
if (node.type === "Identifier") {
var scope = this.getScopeFromName(node.name, this.getCurrentScope());
return scope.name === "rootScope";
}
return false;
} // typeof a !a()
;
_proto.unaryExpressionHandler = function unaryExpressionHandler(node) {
var _this5 = this;
_proto2.unaryExpressionHandler = function unaryExpressionHandler(node) {
var _this4 = this;

@@ -676,2 +761,7 @@ switch (node.operator) {

return function () {
// not allowed to delete root scope property
if (_this4.isRootScope(node.argument)) {
return false;
}
var obj = objectGetter();

@@ -721,3 +811,3 @@ var name = nameGetter();

default:
throw _this5.createInternalThrowError(_messages.Messages.UnaryOperatorSyntaxError, node.operator, node);
throw _this4.createInternalThrowError(_messages.Messages.UnaryOperatorSyntaxError, node.operator, node);
}

@@ -729,4 +819,4 @@ };

_proto.updateExpressionHandler = function updateExpressionHandler(node) {
var _this6 = this;
_proto2.updateExpressionHandler = function updateExpressionHandler(node) {
var _this5 = this;

@@ -739,3 +829,3 @@ var objectGetter = this.createObjectGetter(node.argument);

_this6.assertVariable(obj, name, node);
_this5.assertVariable(obj, name, node);

@@ -750,3 +840,3 @@ switch (node.operator) {

default:
throw _this6.createInternalThrowError(_messages.Messages.UpdateOperatorSyntaxError, node.operator, node);
throw _this5.createInternalThrowError(_messages.Messages.UpdateOperatorSyntaxError, node.operator, node);
}

@@ -757,4 +847,4 @@ };

_proto.objectExpressionHandler = function objectExpressionHandler(node) {
var _this7 = this;
_proto2.objectExpressionHandler = function objectExpressionHandler(node) {
var _this6 = this;

@@ -785,3 +875,3 @@ var items = [];

properties[key][kind] = _this7.createClosure(property.value);
properties[key][kind] = _this6.createClosure(property.value);
items.push({

@@ -831,8 +921,8 @@ key: key,

_proto.arrayExpressionHandler = function arrayExpressionHandler(node) {
var _this8 = this;
_proto2.arrayExpressionHandler = function arrayExpressionHandler(node) {
var _this7 = this;
//fix: [,,,1,2]
var items = node.elements.map(function (element) {
return element ? _this8.createClosure(element) : element;
return element ? _this7.createClosure(element) : element;
});

@@ -855,8 +945,8 @@ return function () {

_proto.safeObjectGet = function safeObjectGet(obj, key, node) {
_proto2.safeObjectGet = function safeObjectGet(obj, key, node) {
return obj[key];
};
_proto.createCallFunctionGetter = function createCallFunctionGetter(node) {
var _this9 = this;
_proto2.createCallFunctionGetter = function createCallFunctionGetter(node) {
var _this8 = this;

@@ -872,18 +962,38 @@ switch (node.type) {

var func = _this9.safeObjectGet(obj, key, node);
var func = _this8.safeObjectGet(obj, key, node);
if (!func || !isFunction(func)) {
var name = source.slice(node.start, node.end);
throw _this9.createInternalThrowError(_messages.Messages.FunctionUndefinedReferenceError, name, node);
}
throw _this8.createInternalThrowError(_messages.Messages.FunctionUndefinedReferenceError, name, node);
} // obj.eval = eval
// obj.eval(...)
if (func.__IS_EVAL_FUNC) {
return function (code) {
return func(code, true);
return func(new InternalInternalReflection(_this8), code, true);
};
} // obj.func = Function
// obj.func(...)
if (func.__IS_FUNCTION_FUNC) {
return function () {
for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
args[_key2] = arguments[_key2];
}
return func.apply(void 0, [new InternalInternalReflection(_this8)].concat(args));
};
} // method call
// eg：obj.say(...)
// eg: obj.say.call(...)
// eg: obj.say.apply(...)
// ======================
// obj.func(...)
// func = func.bind(obj)
// tips:
// test.call(ctx, ...) === test.call.bind(test)(ctx, ...)
// test.apply(ctx, ...) === test.apply.bind(test)(ctx, ...)
// test.f(...) === test.f.bind(test)(...)
// func(...) -> func.bind(obj)(...)
// func.call(...) -> obj.func.call.bind(obj.func)(...)
// func.apply(...) -> obj.func.apply.bind(obj.func)(...)
// ...others

@@ -896,3 +1006,3 @@

default:
// test() or (0.test)() or a[1]() ...
// test() or (0,test)() or a[1]() ...
var closure = this.createClosure(node);

@@ -910,17 +1020,39 @@ return function () {

if (!func || !isFunction(func)) {
throw _this9.createInternalThrowError(_messages.Messages.FunctionUndefinedReferenceError, name, node);
throw _this8.createInternalThrowError(_messages.Messages.FunctionUndefinedReferenceError, name, node);
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval
// calling eval scope check
// var geval = eval;
// geval("a+1");
// var eval = eval;
// function test(){
// eval(...); //note: use local scope in eval5，but in Browser is use global scope
// }
if (node.type === "Identifier" && func.__IS_EVAL_FUNC) {
if (node.type === "Identifier" && func.__IS_EVAL_FUNC && name === "eval") {
return function (code) {
var scope = _this9.getScopeFromName(name, _this9.getCurrentScope());
var scope = _this8.getScopeFromName(name, _this8.getCurrentScope());
var isSuperScope = !scope.parent || _this9.rootScope === scope; // use local scope if calling eval in super scope
var useGlobalScope = !scope.parent || _this8.globalScope === scope || scope.name === "rootScope"; // use local scope if calling eval in super scope
return func(code, !isSuperScope);
return func(new InternalInternalReflection(_this8), code, !useGlobalScope);
};
} // use global scope
// var g_eval = eval;
// g_eval("a+1");
//(0,eval)(...) ...eval alias
if (func.__IS_EVAL_FUNC) {
return function (code) {
return func(new InternalInternalReflection(_this8), code, true);
};
} // Function('a', 'b', 'return a+b')
if (func.__IS_FUNCTION_FUNC) {
return function () {
for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
args[_key3] = arguments[_key3];
}
return func.apply(void 0, [new InternalInternalReflection(_this8)].concat(args));
};
} // function call

@@ -930,5 +1062,6 @@ // this = undefined

// test(...) === test.call(undefined, ...)
// fix: alert.call({}, ...) Illegal invocation
return func.bind(Interpreter.rootContext);
return func.bind(_this8.options.globalContextInFunction);
};

@@ -939,8 +1072,8 @@ }

_proto.callExpressionHandler = function callExpressionHandler(node) {
var _this10 = this;
_proto2.callExpressionHandler = function callExpressionHandler(node) {
var _this9 = this;
var funcGetter = this.createCallFunctionGetter(node.callee);
var argsGetter = node.arguments.map(function (arg) {
return _this10.createClosure(arg);
return _this9.createClosure(arg);
});

@@ -955,4 +1088,4 @@ return function () {

_proto.functionExpressionHandler = function functionExpressionHandler(node) {
var _this11 = this;
_proto2.functionExpressionHandler = function functionExpressionHandler(node) {
var _this10 = this;

@@ -970,3 +1103,3 @@ var self = this;

var paramsGetter = node.params.map(function (param) {
return _this11.createParamNameGetter(param);
return _this10.createParamNameGetter(param);
}); // set scope

@@ -984,4 +1117,4 @@

var func = function func() {
for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
args[_key2] = arguments[_key2];
for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
args[_key4] = arguments[_key4];
}

@@ -1051,4 +1184,4 @@

_proto.newExpressionHandler = function newExpressionHandler(node) {
var _this12 = this;
_proto2.newExpressionHandler = function newExpressionHandler(node) {
var _this11 = this;

@@ -1058,3 +1191,3 @@ var source = this.source;

var args = node.arguments.map(function (arg) {
return _this12.createClosure(arg);
return _this11.createClosure(arg);
});

@@ -1064,6 +1197,13 @@ return function () {

if (!isFunction(construct)) {
if (!isFunction(construct) || construct.__IS_EVAL_FUNC) {
var callee = node.callee;
var name = source.slice(callee.start, callee.end);
throw _this12.createInternalThrowError(_messages.Messages.IsNotConstructor, name, node);
throw _this11.createInternalThrowError(_messages.Messages.IsNotConstructor, name, node);
} // new Function(...)
if (construct.__IS_FUNCTION_FUNC) {
return construct.apply(void 0, [new InternalInternalReflection(_this11)].concat(args.map(function (arg) {
return arg();
})));
}

@@ -1078,3 +1218,3 @@

_proto.memberExpressionHandler = function memberExpressionHandler(node) {
_proto2.memberExpressionHandler = function memberExpressionHandler(node) {
var objectGetter = this.createClosure(node.object);

@@ -1090,7 +1230,7 @@ var keyGetter = this.createMemberKeyGetter(node);

_proto.thisExpressionHandler = function thisExpressionHandler(node) {
var _this13 = this;
_proto2.thisExpressionHandler = function thisExpressionHandler(node) {
var _this12 = this;
return function () {
return _this13.getCurrentContext();
return _this12.getCurrentContext();
};

@@ -1100,7 +1240,7 @@ } // var1,var2,...

_proto.sequenceExpressionHandler = function sequenceExpressionHandler(node) {
var _this14 = this;
_proto2.sequenceExpressionHandler = function sequenceExpressionHandler(node) {
var _this13 = this;
var expressions = node.expressions.map(function (item) {
return _this14.createClosure(item);
return _this13.createClosure(item);
});

@@ -1121,3 +1261,3 @@ return function () {

_proto.literalHandler = function literalHandler(node) {
_proto2.literalHandler = function literalHandler(node) {
return function () {

@@ -1133,11 +1273,11 @@ if (node.regex) {

_proto.identifierHandler = function identifierHandler(node) {
var _this15 = this;
_proto2.identifierHandler = function identifierHandler(node) {
var _this14 = this;
return function () {
var currentScope = _this15.getCurrentScope();
var currentScope = _this14.getCurrentScope();
var data = _this15.getScopeDataFromName(node.name, currentScope);
var data = _this14.getScopeDataFromName(node.name, currentScope);
_this15.assertVariable(data, node.name, node);
_this14.assertVariable(data, node.name, node);

@@ -1149,4 +1289,4 @@ return data[node.name];

_proto.assignmentExpressionHandler = function assignmentExpressionHandler(node) {
var _this16 = this;
_proto2.assignmentExpressionHandler = function assignmentExpressionHandler(node) {
var _this15 = this;

@@ -1172,3 +1312,3 @@ // var s = function(){}

// var1(undefined) += 1
_this16.assertVariable(data, name, node);
_this15.assertVariable(data, name, node);
}

@@ -1232,3 +1372,3 @@

default:
throw _this16.createInternalThrowError(_messages.Messages.AssignmentExpressionSyntaxError, node.type, node);
throw _this15.createInternalThrowError(_messages.Messages.AssignmentExpressionSyntaxError, node.type, node);
}

@@ -1242,3 +1382,3 @@

_proto.functionDeclarationHandler = function functionDeclarationHandler(node) {
_proto2.functionDeclarationHandler = function functionDeclarationHandler(node) {
if (node.id) {

@@ -1260,3 +1400,3 @@ var functionClosure = this.functionExpressionHandler(node);

_proto.getVariableName = function getVariableName(node) {
_proto2.getVariableName = function getVariableName(node) {
if (node.type === "Identifier") {

@@ -1271,4 +1411,4 @@ return node.name;

_proto.variableDeclarationHandler = function variableDeclarationHandler(node) {
var _this17 = this;
_proto2.variableDeclarationHandler = function variableDeclarationHandler(node) {
var _this16 = this;

@@ -1301,5 +1441,5 @@ var assignmentsClosure;

if (assignmentsClosure) {
_this17.isVarDeclMode = true;
_this16.isVarDeclMode = true;
assignmentsClosure();
_this17.isVarDeclMode = false;
_this16.isVarDeclMode = false;
}

@@ -1311,4 +1451,4 @@

_proto.assertVariable = function assertVariable(data, name, node) {
if (data === this.rootScope.data && !(name in data)) {
_proto2.assertVariable = function assertVariable(data, name, node) {
if (data === this.globalScope.data && !(name in data)) {
throw this.createInternalThrowError(_messages.Messages.VariableUndefinedReferenceError, name, node);

@@ -1319,4 +1459,4 @@ }

_proto.programHandler = function programHandler(node) {
var _this18 = this;
_proto2.programHandler = function programHandler(node) {
var _this17 = this;

@@ -1326,3 +1466,3 @@ // const currentScope = this.getCurrentScope();

// if (stmt.type === "EmptyStatement") return null;
return _this18.createClosure(stmt);
return _this17.createClosure(stmt);
});

@@ -1335,3 +1475,3 @@ return function () {

var ret = _this18.setValue(stmtClosure()); // if (!stmtClosure) continue;
var ret = _this17.setValue(stmtClosure()); // if (!stmtClosure) continue;
// EmptyStatement

@@ -1355,7 +1495,7 @@

_proto.expressionStatementHandler = function expressionStatementHandler(node) {
_proto2.expressionStatementHandler = function expressionStatementHandler(node) {
return this.createClosure(node.expression);
};
_proto.emptyStatementHandler = function emptyStatementHandler(node) {
_proto2.emptyStatementHandler = function emptyStatementHandler(node) {
return function () {

@@ -1367,3 +1507,3 @@ return EmptyStatementReturn;

_proto.returnStatementHandler = function returnStatementHandler(node) {
_proto2.returnStatementHandler = function returnStatementHandler(node) {
var argumentClosure = node.argument ? this.createClosure(node.argument) : noop;

@@ -1376,3 +1516,3 @@ return function () {

_proto.ifStatementHandler = function ifStatementHandler(node) {
_proto2.ifStatementHandler = function ifStatementHandler(node) {
var testClosure = this.createClosure(node.test);

@@ -1391,3 +1531,3 @@ var consequentClosure = this.createClosure(node.consequent);

_proto.conditionalExpressionHandler = function conditionalExpressionHandler(node) {
_proto2.conditionalExpressionHandler = function conditionalExpressionHandler(node) {
return this.ifStatementHandler(node);

@@ -1397,4 +1537,4 @@ } // for(var i = 0; i < 10; i++) {...}

_proto.forStatementHandler = function forStatementHandler(node) {
var _this19 = this;
_proto2.forStatementHandler = function forStatementHandler(node) {
var _this18 = this;

@@ -1425,3 +1565,3 @@ var initClosure = noop;

var ret = _this19.setValue(bodyClosure()); // notice: never return Break or Continue!
var ret = _this18.setValue(bodyClosure()); // notice: never return Break or Continue!

@@ -1452,12 +1592,12 @@

_proto.whileStatementHandler = function whileStatementHandler(node) {
_proto2.whileStatementHandler = function whileStatementHandler(node) {
return this.forStatementHandler(node);
};
_proto.doWhileStatementHandler = function doWhileStatementHandler(node) {
_proto2.doWhileStatementHandler = function doWhileStatementHandler(node) {
return this.forStatementHandler(node);
};
_proto.forInStatementHandler = function forInStatementHandler(node) {
var _this20 = this;
_proto2.forInStatementHandler = function forInStatementHandler(node) {
var _this19 = this;

@@ -1492,3 +1632,3 @@ // for( k in obj) or for(o.k in obj) ...

// o.k = x
_this20.assignmentExpressionHandler({
_this19.assignmentExpressionHandler({
type: "AssignmentExpression",

@@ -1504,3 +1644,3 @@ operator: "=",

var ret = _this20.setValue(bodyClosure()); // notice: never return Break or Continue!
var ret = _this19.setValue(bodyClosure()); // notice: never return Break or Continue!

@@ -1530,4 +1670,4 @@

_proto.withStatementHandler = function withStatementHandler(node) {
var _this21 = this;
_proto2.withStatementHandler = function withStatementHandler(node) {
var _this20 = this;

@@ -1537,7 +1677,7 @@ var objectClosure = this.createClosure(node.object);

return function () {
var currentScope = _this21.getCurrentScope();
var currentScope = _this20.getCurrentScope();
var newScope = createScope(currentScope, "with");
var data = objectClosure(); // newScope.data = data;
// copy all property
// copy all properties

@@ -1548,8 +1688,8 @@ for (var k in data) {

_this21.setCurrentScope(newScope); // save last value
_this20.setCurrentScope(newScope); // save last value
var result = _this21.setValue(bodyClosure());
var result = _this20.setValue(bodyClosure());
_this21.setCurrentScope(currentScope);
_this20.setCurrentScope(currentScope);

@@ -1560,8 +1700,8 @@ return result;

_proto.throwStatementHandler = function throwStatementHandler(node) {
var _this22 = this;
_proto2.throwStatementHandler = function throwStatementHandler(node) {
var _this21 = this;
var argumentClosure = this.createClosure(node.argument);
return function () {
_this22.setValue(undefined);
_this21.setValue(undefined);

@@ -1573,4 +1713,4 @@ throw argumentClosure();

_proto.tryStatementHandler = function tryStatementHandler(node) {
var _this23 = this;
_proto2.tryStatementHandler = function tryStatementHandler(node) {
var _this22 = this;

@@ -1581,9 +1721,9 @@ var blockClosure = this.createClosure(node.block);

return function () {
var currentScope = _this23.getCurrentScope();
var currentScope = _this22.getCurrentScope();
var currentContext = _this23.getCurrentContext();
var currentContext = _this22.getCurrentContext();
var labelStack = currentScope.labelStack.concat([]);
var callStack = _this23.callStack.concat([]);
var callStack = _this22.callStack.concat([]);

@@ -1595,6 +1735,6 @@ var result = EmptyStatementReturn;

var reset = function reset() {
_this23.setCurrentScope(currentScope); //reset scope
_this22.setCurrentScope(currentScope); //reset scope
_this23.setCurrentContext(currentContext); //reset context
_this22.setCurrentContext(currentContext); //reset context

@@ -1604,3 +1744,3 @@

_this23.callStack = callStack; //reset call stack
_this22.callStack = callStack; //reset call stack
};

@@ -1620,3 +1760,3 @@ /**

try {
result = _this23.setValue(blockClosure());
result = _this22.setValue(blockClosure());

@@ -1629,3 +1769,3 @@ if (result instanceof Return) {

if (_this23.isInterruptThrow(err)) {
if (_this22.isInterruptThrow(err)) {
throw err;

@@ -1636,3 +1776,3 @@ }

try {
result = _this23.setValue(handlerClosure(err));
result = _this22.setValue(handlerClosure(err));

@@ -1645,3 +1785,3 @@ if (result instanceof Return) {

if (_this23.isInterruptThrow(err)) {
if (_this22.isInterruptThrow(err)) {
throw err;

@@ -1669,3 +1809,3 @@ } // save catch throw error

if (_this23.isInterruptThrow(err)) {
if (_this22.isInterruptThrow(err)) {
throw err;

@@ -1694,4 +1834,4 @@ } // save finally throw error

_proto.catchClauseHandler = function catchClauseHandler(node) {
var _this24 = this;
_proto2.catchClauseHandler = function catchClauseHandler(node) {
var _this23 = this;

@@ -1703,3 +1843,3 @@ var paramNameGetter = this.createParamNameGetter(node.param);

var currentScope = _this24.getCurrentScope();
var currentScope = _this23.getCurrentScope();

@@ -1729,3 +1869,3 @@ var scopeData = currentScope.data; // get param name "e"

_proto.continueStatementHandler = function continueStatementHandler(node) {
_proto2.continueStatementHandler = function continueStatementHandler(node) {
return function () {

@@ -1736,3 +1876,3 @@ return node.label ? new ContinueLabel(node.label.name) : Continue;

_proto.breakStatementHandler = function breakStatementHandler(node) {
_proto2.breakStatementHandler = function breakStatementHandler(node) {
return function () {

@@ -1743,8 +1883,8 @@ return node.label ? new BreakLabel(node.label.name) : Break;

_proto.switchStatementHandler = function switchStatementHandler(node) {
var _this25 = this;
_proto2.switchStatementHandler = function switchStatementHandler(node) {
var _this24 = this;
var discriminantClosure = this.createClosure(node.discriminant);
var caseClosures = node.cases.map(function (item) {
return _this25.switchCaseHandler(item);
return _this24.switchCaseHandler(item);
});

@@ -1768,3 +1908,3 @@ return function () {

match = true;
ret = _this25.setValue(item.bodyClosure()); // notice: never return Break!
ret = _this24.setValue(item.bodyClosure()); // notice: never return Break!

@@ -1786,3 +1926,3 @@ if (ret === EmptyStatementReturn) continue;

if (!match && defaultCase) {
ret = _this25.setValue(defaultCase.bodyClosure());
ret = _this24.setValue(defaultCase.bodyClosure());
var isEBC = ret === EmptyStatementReturn || ret === Break || ret === Continue; // notice: never return Break or Continue!

@@ -1799,3 +1939,3 @@

_proto.switchCaseHandler = function switchCaseHandler(node) {
_proto2.switchCaseHandler = function switchCaseHandler(node) {
var testClosure = node.test ? this.createClosure(node.test) : function () {

@@ -1817,4 +1957,4 @@ return DefaultCase;

_proto.labeledStatementHandler = function labeledStatementHandler(node) {
var _this26 = this;
_proto2.labeledStatementHandler = function labeledStatementHandler(node) {
var _this25 = this;

@@ -1826,3 +1966,3 @@ var labelName = node.label.name;

var currentScope = _this26.getCurrentScope();
var currentScope = _this25.getCurrentScope();

@@ -1841,3 +1981,3 @@ currentScope.labelStack.push(labelName);

_proto.debuggerStatementHandler = function debuggerStatementHandler(node) {
_proto2.debuggerStatementHandler = function debuggerStatementHandler(node) {
return function () {

@@ -1850,3 +1990,3 @@ debugger;

_proto.createParamNameGetter = function createParamNameGetter(node) {
_proto2.createParamNameGetter = function createParamNameGetter(node) {
if (node.type === "Identifier") {

@@ -1861,3 +2001,3 @@ return function () {

_proto.createObjectKeyGetter = function createObjectKeyGetter(node) {
_proto2.createObjectKeyGetter = function createObjectKeyGetter(node) {
var getter; // var obj = { title: "" }

@@ -1880,3 +2020,3 @@

_proto.createMemberKeyGetter = function createMemberKeyGetter(node) {
_proto2.createMemberKeyGetter = function createMemberKeyGetter(node) {
// s['a']; node.computed = true

@@ -1888,4 +2028,4 @@ // s.foo; node.computed = false

_proto.createObjectGetter = function createObjectGetter(node) {
var _this27 = this;
_proto2.createObjectGetter = function createObjectGetter(node) {
var _this26 = this;

@@ -1895,3 +2035,3 @@ switch (node.type) {

return function () {
return _this27.getScopeDataFromName(node.name, _this27.getCurrentScope());
return _this26.getScopeDataFromName(node.name, _this26.getCurrentScope());
};

@@ -1908,3 +2048,3 @@

_proto.createNameGetter = function createNameGetter(node) {
_proto2.createNameGetter = function createNameGetter(node) {
switch (node.type) {

@@ -1924,3 +2064,3 @@ case "Identifier":

_proto.varDeclaration = function varDeclaration(name) {
_proto2.varDeclaration = function varDeclaration(name) {
var context = this.collectDeclVars;

@@ -1930,3 +2070,3 @@ context[name] = undefined;

_proto.funcDeclaration = function funcDeclaration(name, func) {
_proto2.funcDeclaration = function funcDeclaration(name, func) {
var context = this.collectDeclFuncs;

@@ -1936,3 +2076,3 @@ context[name] = func;

_proto.addDeclarationsToScope = function addDeclarationsToScope(declVars, declFuncs, scope) {
_proto2.addDeclarationsToScope = function addDeclarationsToScope(declVars, declFuncs, scope) {
var scopeData = scope.data;

@@ -1945,5 +2085,5 @@

for (var _key3 in declVars) {
if (!(_key3 in scopeData)) {
scopeData[_key3] = void 0;
for (var _key5 in declVars) {
if (!(_key5 in scopeData)) {
scopeData[_key5] = void 0;
}

@@ -1953,3 +2093,3 @@ }

_proto.getScopeValue = function getScopeValue(name, startScope) {
_proto2.getScopeValue = function getScopeValue(name, startScope) {
var scope = this.getScopeFromName(name, startScope);

@@ -1959,7 +2099,7 @@ return scope.data[name];

_proto.getScopeDataFromName = function getScopeDataFromName(name, startScope) {
_proto2.getScopeDataFromName = function getScopeDataFromName(name, startScope) {
return this.getScopeFromName(name, startScope).data;
};
_proto.getScopeFromName = function getScopeFromName(name, startScope) {
_proto2.getScopeFromName = function getScopeFromName(name, startScope) {
var scope = startScope;

@@ -1974,14 +2114,6 @@

return this.rootScope;
return this.globalScope;
};
_proto.getCurrentScope = function getCurrentScope() {
return this.currentScope;
};
_proto.getCurrentContext = function getCurrentContext() {
return this.currentContext;
};
_proto.setValue = function setValue(value) {
_proto2.setValue = function setValue(value) {
var isFunctionCall = this.callStack.length;

@@ -1997,3 +2129,3 @@

_proto.getValue = function getValue() {
_proto2.getValue = function getValue() {
return this.value;

@@ -2007,8 +2139,12 @@ };

Interpreter.version = version;
Interpreter.eval = IEval;
Interpreter.Function = IFunction;
Interpreter.ecmaVersion = 5; // alert.call(rootContext, 1);
// But alert({}, 1); // Illegal invocation
Interpreter.eval = internalEval;
Interpreter.Function = internalFunction;
Interpreter.ecmaVersion = 5; // alert.call(globalContextInFunction, 1);
// fix: alert.call({}, 1); // Illegal invocation
// function func(){
// this;// Interpreter.globalContextInFunction
// }
// func()
Interpreter.rootContext = void 0;
Interpreter.globalContextInFunction = void 0;
Interpreter.global = Object.create(null);

4

dist/cjs/vm.js

@@ -37,3 +37,5 @@ "use strict";

ecmaVersion: options.ecmaVersion,
timeout: timeout
timeout: timeout,
rootContext: options.rootContext,
globalContextInFunction: options.globalContextInFunction
});

@@ -40,0 +42,0 @@ return interpreter.evaluate(wrapCode);

674

dist/esm/interpreter/main.js
import _construct from "@babel/runtime/helpers/construct";
import { parse } from "acorn";
import { Messages, InterruptThrowError, InterruptThrowReferenceError, InterruptThrowSyntaxError } from "./messages";
var version = "1.3.1";
var version = "1.4.0";

@@ -20,4 +20,2 @@ function defineFunctionName(func, name) {

var EmptyStatementReturn = Symbol("EmptyStatementReturn");
var IEval = Symbol("IEval");
var IFunction = Symbol("IFunction");

@@ -28,2 +26,100 @@ function isFunction(func) {

var InternalInternalReflection =
/*#__PURE__*/
function () {
function InternalInternalReflection(interpreter) {
this.interpreter = interpreter;
}
var _proto = InternalInternalReflection.prototype;
_proto.generator = function generator() {
var interpreter = this.interpreter;
function getCurrentScope() {
return this.getCurrentScope();
}
function getGlobalScope() {
return this.getGlobalScope();
}
function getCurrentContext() {
return this.getCurrentContext();
}
return {
getOptions: interpreter.getOptions.bind(interpreter),
getCurrentScope: getCurrentScope.bind(interpreter),
getGlobalScope: getGlobalScope.bind(interpreter),
getCurrentContext: getCurrentContext.bind(interpreter),
getExecStartTime: interpreter.getExecStartTime.bind(interpreter)
};
};
return InternalInternalReflection;
}();
function internalEval(reflection, code, useGlobalScope) {
if (useGlobalScope === void 0) {
useGlobalScope = true;
}
if (!(reflection instanceof InternalInternalReflection)) {
throw new Error("Illegal call");
}
if (typeof code !== "string") return code;
if (!code) return void 0;
var instance = reflection.generator();
var opts = instance.getOptions();
var options = {
timeout: opts.timeout,
_initEnv: function _initEnv() {
// set caller context
if (!useGlobalScope) {
this.setCurrentContext(instance.getCurrentContext());
} // share timeout
this.execStartTime = instance.getExecStartTime();
this.execEndTime = this.execStartTime;
}
};
var currentScope = useGlobalScope ? instance.getGlobalScope() : instance.getCurrentScope();
var interpreter = new Interpreter(currentScope, options);
return interpreter.evaluate(code);
}
Object.defineProperty(internalEval, "__IS_EVAL_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false
});
function internalFunction(reflection) {
if (!(reflection instanceof InternalInternalReflection)) {
throw new Error("Illegal call");
}
var instance = reflection.generator();
for (var _len = arguments.length, params = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
params[_key - 1] = arguments[_key];
}
var code = params.pop();
var interpreter = new Interpreter(instance.getGlobalScope(), instance.getOptions());
var wrapCode = "\n\t\t (function anonymous(" + params.join(",") + "){\n\t\t " + code + "\n\t\t });\n\t\t ";
return interpreter.evaluate(wrapCode);
}
Object.defineProperty(internalFunction, "__IS_FUNCTION_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false
});
var Return = function Return(value) {

@@ -40,3 +136,16 @@ this.value = value;

};
/**
* scope chain
*
* superScope
* ↓
* rootScope
* ↓
* globalScope
* ↓
* functionScope
*
*/
var Scope = function Scope(data, parent, name) {

@@ -87,3 +196,5 @@ if (parent === void 0) {

escape: escape,
unescape: unescape
unescape: unescape,
eval: internalEval,
Function: internalFunction
}; // ES5 Object

@@ -149,12 +260,14 @@

timeout: options.timeout || 0,
initEnv: options.initEnv
rootContext: options.rootContext,
globalContextInFunction: options.globalContextInFunction === undefined ? Interpreter.globalContextInFunction : options.globalContextInFunction,
_initEnv: options._initEnv
};
this.context = context;
this.context = context || Object.create(null);
this.callStack = [];
this.initEnvironment(context);
this.initEnvironment(this.context);
}
var _proto = Interpreter.prototype;
var _proto2 = Interpreter.prototype;
_proto.initEnvironment = function initEnvironment(ctx) {
_proto2.initEnvironment = function initEnvironment(ctx) {
var scope; //init global scope

@@ -165,20 +278,16 @@

} else {
var superScope = this.getSuperScope(ctx); // replace Interpreter.eval and Interpreter.Function
var rootScope = null;
var superScope = this.createSuperScope(ctx);
Object.keys(ctx).forEach(function (key) {
if (ctx[key] === IEval) {
ctx[key] = superScope.data[IEval];
}
if (this.options.rootContext) {
rootScope = new Scope(this.options.rootContext, superScope, "rootScope");
}
if (ctx[key] === IFunction) {
ctx[key] = superScope.data[IFunction];
}
});
scope = new Scope(ctx, superScope, "root");
scope = new Scope(ctx, rootScope || superScope, "globalScope");
}
this.rootScope = scope;
this.currentScope = this.rootScope; //init global context == this
this.globalScope = scope;
this.currentScope = this.globalScope; //init global context to this
this.rootContext = scope.data;
this.globalContext = scope.data;
this.currentContext = scope.data; // collect var/function declare

@@ -190,69 +299,48 @@

this.execEndTime = this.execStartTime;
var initEnv = this.options.initEnv;
var _initEnv = this.options._initEnv;
if (initEnv) {
initEnv(this);
if (_initEnv) {
_initEnv.call(this);
}
};
_proto.isInterruptThrow = function isInterruptThrow(err) {
return err instanceof InterruptThrowError || err instanceof InterruptThrowReferenceError || err instanceof InterruptThrowSyntaxError;
_proto2.getExecStartTime = function getExecStartTime() {
return this.execStartTime;
};
_proto.getSuperScope = function getSuperScope(ctx) {
var _this = this;
_proto2.getExecutionTime = function getExecutionTime() {
return this.execEndTime - this.execStartTime;
};
var data = Object.assign({}, BuildInObjects);
_proto2.setExecTimeout = function setExecTimeout(timeout) {
if (timeout === void 0) {
timeout = 0;
}
data.eval = function (code, useGlobalScope) {
if (useGlobalScope === void 0) {
useGlobalScope = true;
}
this.options.timeout = timeout;
};
if (typeof code !== "string") return code;
if (!code) return void 0;
var options = {
timeout: _this.options.timeout,
initEnv: function initEnv(inst) {
// set caller context
if (!useGlobalScope) {
inst.setCurrentContext(_this.getCurrentContext());
}
_proto2.getOptions = function getOptions() {
return this.options;
};
inst.execStartTime = _this.execStartTime;
inst.execEndTime = inst.execStartTime;
}
};
var currentScope = useGlobalScope ? _this.rootScope : _this.getCurrentScope();
var interpreter = new Interpreter(currentScope, options);
return interpreter.evaluate(code);
};
_proto2.getGlobalScope = function getGlobalScope() {
return this.globalScope;
};
Object.defineProperty(data.eval, "__IS_EVAL_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false
});
_proto2.getCurrentScope = function getCurrentScope() {
return this.currentScope;
};
data.Function = function () {
for (var _len = arguments.length, params = new Array(_len), _key = 0; _key < _len; _key++) {
params[_key] = arguments[_key];
}
_proto2.getCurrentContext = function getCurrentContext() {
return this.currentContext;
};
var code = params.pop();
var interpreter = new Interpreter(_this.rootScope, _this.options);
var wrapCode = "\n\t\t (function anonymous(" + params.join(",") + "){\n\t\t " + code + "\n\t\t });\n\t\t ";
return interpreter.evaluate(wrapCode);
};
_proto2.isInterruptThrow = function isInterruptThrow(err) {
return err instanceof InterruptThrowError || err instanceof InterruptThrowReferenceError || err instanceof InterruptThrowSyntaxError;
};
Object.defineProperty(data.Function, "__IS_FUNCTION_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false
});
_proto2.createSuperScope = function createSuperScope(ctx) {
var data = Object.assign({}, BuildInObjects);
var buildInObjectKeys = Object.keys(data);
data[IEval] = data.eval;
data[IFunction] = data.Function;
buildInObjectKeys.forEach(function (key) {

@@ -263,14 +351,14 @@ if (key in ctx) {

});
return new Scope(data, null, "superRoot");
return new Scope(data, null, "superScope");
};
_proto.setCurrentContext = function setCurrentContext(ctx) {
_proto2.setCurrentContext = function setCurrentContext(ctx) {
this.currentContext = ctx;
};
_proto.setCurrentScope = function setCurrentScope(scope) {
_proto2.setCurrentScope = function setCurrentScope(scope) {
this.currentScope = scope;
};
_proto.evaluate = function evaluate(code) {
_proto2.evaluate = function evaluate(code) {
if (code === void 0) {

@@ -290,7 +378,7 @@ code = "";

_proto.appendCode = function appendCode(code) {
_proto2.appendCode = function appendCode(code) {
return this.evaluate(code);
};
_proto.evaluateNode = function evaluateNode(node, source) {
_proto2.evaluateNode = function evaluateNode(node, source) {
if (source === void 0) {

@@ -323,7 +411,3 @@ source = "";

_proto.getExecutionTime = function getExecutionTime() {
return this.execEndTime - this.execStartTime;
};
_proto.createErrorMessage = function createErrorMessage(msg, value, node) {
_proto2.createErrorMessage = function createErrorMessage(msg, value, node) {
var message = msg[1].replace("%0", String(value));

@@ -338,23 +422,15 @@

_proto.createError = function createError(message, error) {
_proto2.createError = function createError(message, error) {
return new error(message);
};
_proto.createThrowError = function createThrowError(message, error) {
_proto2.createThrowError = function createThrowError(message, error) {
return this.createError(message, error);
};
_proto.createInternalThrowError = function createInternalThrowError(msg, value, node) {
_proto2.createInternalThrowError = function createInternalThrowError(msg, value, node) {
return this.createError(this.createErrorMessage(msg, value, node), msg[2]);
};
_proto.setExecTimeout = function setExecTimeout(timeout) {
if (timeout === void 0) {
timeout = 0;
}
this.options.timeout = timeout;
};
_proto.checkTimeout = function checkTimeout() {
_proto2.checkTimeout = function checkTimeout() {
if (!this.isRunning) return false;

@@ -371,3 +447,3 @@ var timeout = this.options.timeout || 0;

_proto.getNodePosition = function getNodePosition(node) {
_proto2.getNodePosition = function getNodePosition(node) {
if (node) {

@@ -382,4 +458,4 @@ var errorCode = ""; //this.source.slice(node.start, node.end);

_proto.createClosure = function createClosure(node) {
var _this2 = this;
_proto2.createClosure = function createClosure(node) {
var _this = this;

@@ -535,9 +611,9 @@ var closure;

return function () {
var timeout = _this2.options.timeout;
var timeout = _this.options.timeout;
if (timeout && timeout > 0 && _this2.checkTimeout()) {
throw _this2.createInternalThrowError(Messages.ExecutionTimeOutError, timeout, null);
if (timeout && timeout > 0 && _this.checkTimeout()) {
throw _this.createInternalThrowError(Messages.ExecutionTimeOutError, timeout, null);
}
_this2.lastExecNode = node;
_this.lastExecNode = node;
return closure.apply(void 0, arguments);

@@ -548,4 +624,4 @@ };

_proto.binaryExpressionHandler = function binaryExpressionHandler(node) {
var _this3 = this;
_proto2.binaryExpressionHandler = function binaryExpressionHandler(node) {
var _this2 = this;

@@ -626,3 +702,3 @@ var leftExpression = this.createClosure(node.left);

default:
throw _this3.createInternalThrowError(Messages.BinaryOperatorSyntaxError, node.operator, node);
throw _this2.createInternalThrowError(Messages.BinaryOperatorSyntaxError, node.operator, node);
}

@@ -633,4 +709,4 @@ };

_proto.logicalExpressionHandler = function logicalExpressionHandler(node) {
var _this4 = this;
_proto2.logicalExpressionHandler = function logicalExpressionHandler(node) {
var _this3 = this;

@@ -648,10 +724,19 @@ var leftExpression = this.createClosure(node.left);

default:
throw _this4.createInternalThrowError(Messages.LogicalOperatorSyntaxError, node.operator, node);
throw _this3.createInternalThrowError(Messages.LogicalOperatorSyntaxError, node.operator, node);
}
};
};
_proto2.isRootScope = function isRootScope(node) {
if (node.type === "Identifier") {
var scope = this.getScopeFromName(node.name, this.getCurrentScope());
return scope.name === "rootScope";
}
return false;
} // typeof a !a()
;
_proto.unaryExpressionHandler = function unaryExpressionHandler(node) {
var _this5 = this;
_proto2.unaryExpressionHandler = function unaryExpressionHandler(node) {
var _this4 = this;

@@ -663,2 +748,7 @@ switch (node.operator) {

return function () {
// not allowed to delete root scope property
if (_this4.isRootScope(node.argument)) {
return false;
}
var obj = objectGetter();

@@ -708,3 +798,3 @@ var name = nameGetter();

default:
throw _this5.createInternalThrowError(Messages.UnaryOperatorSyntaxError, node.operator, node);
throw _this4.createInternalThrowError(Messages.UnaryOperatorSyntaxError, node.operator, node);
}

@@ -716,4 +806,4 @@ };

_proto.updateExpressionHandler = function updateExpressionHandler(node) {
var _this6 = this;
_proto2.updateExpressionHandler = function updateExpressionHandler(node) {
var _this5 = this;

@@ -726,3 +816,3 @@ var objectGetter = this.createObjectGetter(node.argument);

_this6.assertVariable(obj, name, node);
_this5.assertVariable(obj, name, node);

@@ -737,3 +827,3 @@ switch (node.operator) {

default:
throw _this6.createInternalThrowError(Messages.UpdateOperatorSyntaxError, node.operator, node);
throw _this5.createInternalThrowError(Messages.UpdateOperatorSyntaxError, node.operator, node);
}

@@ -744,4 +834,4 @@ };

_proto.objectExpressionHandler = function objectExpressionHandler(node) {
var _this7 = this;
_proto2.objectExpressionHandler = function objectExpressionHandler(node) {
var _this6 = this;

@@ -772,3 +862,3 @@ var items = [];

properties[key][kind] = _this7.createClosure(property.value);
properties[key][kind] = _this6.createClosure(property.value);
items.push({

@@ -818,8 +908,8 @@ key: key,

_proto.arrayExpressionHandler = function arrayExpressionHandler(node) {
var _this8 = this;
_proto2.arrayExpressionHandler = function arrayExpressionHandler(node) {
var _this7 = this;
//fix: [,,,1,2]
var items = node.elements.map(function (element) {
return element ? _this8.createClosure(element) : element;
return element ? _this7.createClosure(element) : element;
});

@@ -842,8 +932,8 @@ return function () {

_proto.safeObjectGet = function safeObjectGet(obj, key, node) {
_proto2.safeObjectGet = function safeObjectGet(obj, key, node) {
return obj[key];
};
_proto.createCallFunctionGetter = function createCallFunctionGetter(node) {
var _this9 = this;
_proto2.createCallFunctionGetter = function createCallFunctionGetter(node) {
var _this8 = this;

@@ -859,18 +949,38 @@ switch (node.type) {

var func = _this9.safeObjectGet(obj, key, node);
var func = _this8.safeObjectGet(obj, key, node);
if (!func || !isFunction(func)) {
var name = source.slice(node.start, node.end);
throw _this9.createInternalThrowError(Messages.FunctionUndefinedReferenceError, name, node);
}
throw _this8.createInternalThrowError(Messages.FunctionUndefinedReferenceError, name, node);
} // obj.eval = eval
// obj.eval(...)
if (func.__IS_EVAL_FUNC) {
return function (code) {
return func(code, true);
return func(new InternalInternalReflection(_this8), code, true);
};
} // obj.func = Function
// obj.func(...)
if (func.__IS_FUNCTION_FUNC) {
return function () {
for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
args[_key2] = arguments[_key2];
}
return func.apply(void 0, [new InternalInternalReflection(_this8)].concat(args));
};
} // method call
// eg：obj.say(...)
// eg: obj.say.call(...)
// eg: obj.say.apply(...)
// ======================
// obj.func(...)
// func = func.bind(obj)
// tips:
// test.call(ctx, ...) === test.call.bind(test)(ctx, ...)
// test.apply(ctx, ...) === test.apply.bind(test)(ctx, ...)
// test.f(...) === test.f.bind(test)(...)
// func(...) -> func.bind(obj)(...)
// func.call(...) -> obj.func.call.bind(obj.func)(...)
// func.apply(...) -> obj.func.apply.bind(obj.func)(...)
// ...others

@@ -883,3 +993,3 @@

default:
// test() or (0.test)() or a[1]() ...
// test() or (0,test)() or a[1]() ...
var closure = this.createClosure(node);

@@ -897,17 +1007,39 @@ return function () {

if (!func || !isFunction(func)) {
throw _this9.createInternalThrowError(Messages.FunctionUndefinedReferenceError, name, node);
throw _this8.createInternalThrowError(Messages.FunctionUndefinedReferenceError, name, node);
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval
// calling eval scope check
// var geval = eval;
// geval("a+1");
// var eval = eval;
// function test(){
// eval(...); //note: use local scope in eval5，but in Browser is use global scope
// }
if (node.type === "Identifier" && func.__IS_EVAL_FUNC) {
if (node.type === "Identifier" && func.__IS_EVAL_FUNC && name === "eval") {
return function (code) {
var scope = _this9.getScopeFromName(name, _this9.getCurrentScope());
var scope = _this8.getScopeFromName(name, _this8.getCurrentScope());
var isSuperScope = !scope.parent || _this9.rootScope === scope; // use local scope if calling eval in super scope
var useGlobalScope = !scope.parent || _this8.globalScope === scope || scope.name === "rootScope"; // use local scope if calling eval in super scope
return func(code, !isSuperScope);
return func(new InternalInternalReflection(_this8), code, !useGlobalScope);
};
} // use global scope
// var g_eval = eval;
// g_eval("a+1");
//(0,eval)(...) ...eval alias
if (func.__IS_EVAL_FUNC) {
return function (code) {
return func(new InternalInternalReflection(_this8), code, true);
};
} // Function('a', 'b', 'return a+b')
if (func.__IS_FUNCTION_FUNC) {
return function () {
for (var _len3 = arguments.length, args = new Array(_len3), _key3 = 0; _key3 < _len3; _key3++) {
args[_key3] = arguments[_key3];
}
return func.apply(void 0, [new InternalInternalReflection(_this8)].concat(args));
};
} // function call

@@ -917,5 +1049,6 @@ // this = undefined

// test(...) === test.call(undefined, ...)
// fix: alert.call({}, ...) Illegal invocation
return func.bind(Interpreter.rootContext);
return func.bind(_this8.options.globalContextInFunction);
};

@@ -926,8 +1059,8 @@ }

_proto.callExpressionHandler = function callExpressionHandler(node) {
var _this10 = this;
_proto2.callExpressionHandler = function callExpressionHandler(node) {
var _this9 = this;
var funcGetter = this.createCallFunctionGetter(node.callee);
var argsGetter = node.arguments.map(function (arg) {
return _this10.createClosure(arg);
return _this9.createClosure(arg);
});

@@ -942,4 +1075,4 @@ return function () {

_proto.functionExpressionHandler = function functionExpressionHandler(node) {
var _this11 = this;
_proto2.functionExpressionHandler = function functionExpressionHandler(node) {
var _this10 = this;

@@ -957,3 +1090,3 @@ var self = this;

var paramsGetter = node.params.map(function (param) {
return _this11.createParamNameGetter(param);
return _this10.createParamNameGetter(param);
}); // set scope

@@ -971,4 +1104,4 @@

var func = function func() {
for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
args[_key2] = arguments[_key2];
for (var _len4 = arguments.length, args = new Array(_len4), _key4 = 0; _key4 < _len4; _key4++) {
args[_key4] = arguments[_key4];
}

@@ -1038,4 +1171,4 @@

_proto.newExpressionHandler = function newExpressionHandler(node) {
var _this12 = this;
_proto2.newExpressionHandler = function newExpressionHandler(node) {
var _this11 = this;

@@ -1045,3 +1178,3 @@ var source = this.source;

var args = node.arguments.map(function (arg) {
return _this12.createClosure(arg);
return _this11.createClosure(arg);
});

@@ -1051,6 +1184,13 @@ return function () {

if (!isFunction(construct)) {
if (!isFunction(construct) || construct.__IS_EVAL_FUNC) {
var callee = node.callee;
var name = source.slice(callee.start, callee.end);
throw _this12.createInternalThrowError(Messages.IsNotConstructor, name, node);
throw _this11.createInternalThrowError(Messages.IsNotConstructor, name, node);
} // new Function(...)
if (construct.__IS_FUNCTION_FUNC) {
return construct.apply(void 0, [new InternalInternalReflection(_this11)].concat(args.map(function (arg) {
return arg();
})));
}

@@ -1065,3 +1205,3 @@

_proto.memberExpressionHandler = function memberExpressionHandler(node) {
_proto2.memberExpressionHandler = function memberExpressionHandler(node) {
var objectGetter = this.createClosure(node.object);

@@ -1077,7 +1217,7 @@ var keyGetter = this.createMemberKeyGetter(node);

_proto.thisExpressionHandler = function thisExpressionHandler(node) {
var _this13 = this;
_proto2.thisExpressionHandler = function thisExpressionHandler(node) {
var _this12 = this;
return function () {
return _this13.getCurrentContext();
return _this12.getCurrentContext();
};

@@ -1087,7 +1227,7 @@ } // var1,var2,...

_proto.sequenceExpressionHandler = function sequenceExpressionHandler(node) {
var _this14 = this;
_proto2.sequenceExpressionHandler = function sequenceExpressionHandler(node) {
var _this13 = this;
var expressions = node.expressions.map(function (item) {
return _this14.createClosure(item);
return _this13.createClosure(item);
});

@@ -1108,3 +1248,3 @@ return function () {

_proto.literalHandler = function literalHandler(node) {
_proto2.literalHandler = function literalHandler(node) {
return function () {

@@ -1120,11 +1260,11 @@ if (node.regex) {

_proto.identifierHandler = function identifierHandler(node) {
var _this15 = this;
_proto2.identifierHandler = function identifierHandler(node) {
var _this14 = this;
return function () {
var currentScope = _this15.getCurrentScope();
var currentScope = _this14.getCurrentScope();
var data = _this15.getScopeDataFromName(node.name, currentScope);
var data = _this14.getScopeDataFromName(node.name, currentScope);
_this15.assertVariable(data, node.name, node);
_this14.assertVariable(data, node.name, node);

@@ -1136,4 +1276,4 @@ return data[node.name];

_proto.assignmentExpressionHandler = function assignmentExpressionHandler(node) {
var _this16 = this;
_proto2.assignmentExpressionHandler = function assignmentExpressionHandler(node) {
var _this15 = this;

@@ -1159,3 +1299,3 @@ // var s = function(){}

// var1(undefined) += 1
_this16.assertVariable(data, name, node);
_this15.assertVariable(data, name, node);
}

@@ -1219,3 +1359,3 @@

default:
throw _this16.createInternalThrowError(Messages.AssignmentExpressionSyntaxError, node.type, node);
throw _this15.createInternalThrowError(Messages.AssignmentExpressionSyntaxError, node.type, node);
}

@@ -1229,3 +1369,3 @@

_proto.functionDeclarationHandler = function functionDeclarationHandler(node) {
_proto2.functionDeclarationHandler = function functionDeclarationHandler(node) {
if (node.id) {

@@ -1247,3 +1387,3 @@ var functionClosure = this.functionExpressionHandler(node);

_proto.getVariableName = function getVariableName(node) {
_proto2.getVariableName = function getVariableName(node) {
if (node.type === "Identifier") {

@@ -1258,4 +1398,4 @@ return node.name;

_proto.variableDeclarationHandler = function variableDeclarationHandler(node) {
var _this17 = this;
_proto2.variableDeclarationHandler = function variableDeclarationHandler(node) {
var _this16 = this;

@@ -1288,5 +1428,5 @@ var assignmentsClosure;

if (assignmentsClosure) {
_this17.isVarDeclMode = true;
_this16.isVarDeclMode = true;
assignmentsClosure();
_this17.isVarDeclMode = false;
_this16.isVarDeclMode = false;
}

@@ -1298,4 +1438,4 @@

_proto.assertVariable = function assertVariable(data, name, node) {
if (data === this.rootScope.data && !(name in data)) {
_proto2.assertVariable = function assertVariable(data, name, node) {
if (data === this.globalScope.data && !(name in data)) {
throw this.createInternalThrowError(Messages.VariableUndefinedReferenceError, name, node);

@@ -1306,4 +1446,4 @@ }

_proto.programHandler = function programHandler(node) {
var _this18 = this;
_proto2.programHandler = function programHandler(node) {
var _this17 = this;

@@ -1313,3 +1453,3 @@ // const currentScope = this.getCurrentScope();

// if (stmt.type === "EmptyStatement") return null;
return _this18.createClosure(stmt);
return _this17.createClosure(stmt);
});

@@ -1322,3 +1462,3 @@ return function () {

var ret = _this18.setValue(stmtClosure()); // if (!stmtClosure) continue;
var ret = _this17.setValue(stmtClosure()); // if (!stmtClosure) continue;
// EmptyStatement

@@ -1342,7 +1482,7 @@

_proto.expressionStatementHandler = function expressionStatementHandler(node) {
_proto2.expressionStatementHandler = function expressionStatementHandler(node) {
return this.createClosure(node.expression);
};
_proto.emptyStatementHandler = function emptyStatementHandler(node) {
_proto2.emptyStatementHandler = function emptyStatementHandler(node) {
return function () {

@@ -1354,3 +1494,3 @@ return EmptyStatementReturn;

_proto.returnStatementHandler = function returnStatementHandler(node) {
_proto2.returnStatementHandler = function returnStatementHandler(node) {
var argumentClosure = node.argument ? this.createClosure(node.argument) : noop;

@@ -1363,3 +1503,3 @@ return function () {

_proto.ifStatementHandler = function ifStatementHandler(node) {
_proto2.ifStatementHandler = function ifStatementHandler(node) {
var testClosure = this.createClosure(node.test);

@@ -1378,3 +1518,3 @@ var consequentClosure = this.createClosure(node.consequent);

_proto.conditionalExpressionHandler = function conditionalExpressionHandler(node) {
_proto2.conditionalExpressionHandler = function conditionalExpressionHandler(node) {
return this.ifStatementHandler(node);

@@ -1384,4 +1524,4 @@ } // for(var i = 0; i < 10; i++) {...}

_proto.forStatementHandler = function forStatementHandler(node) {
var _this19 = this;
_proto2.forStatementHandler = function forStatementHandler(node) {
var _this18 = this;

@@ -1412,3 +1552,3 @@ var initClosure = noop;

var ret = _this19.setValue(bodyClosure()); // notice: never return Break or Continue!
var ret = _this18.setValue(bodyClosure()); // notice: never return Break or Continue!

@@ -1439,12 +1579,12 @@

_proto.whileStatementHandler = function whileStatementHandler(node) {
_proto2.whileStatementHandler = function whileStatementHandler(node) {
return this.forStatementHandler(node);
};
_proto.doWhileStatementHandler = function doWhileStatementHandler(node) {
_proto2.doWhileStatementHandler = function doWhileStatementHandler(node) {
return this.forStatementHandler(node);
};
_proto.forInStatementHandler = function forInStatementHandler(node) {
var _this20 = this;
_proto2.forInStatementHandler = function forInStatementHandler(node) {
var _this19 = this;

@@ -1479,3 +1619,3 @@ // for( k in obj) or for(o.k in obj) ...

// o.k = x
_this20.assignmentExpressionHandler({
_this19.assignmentExpressionHandler({
type: "AssignmentExpression",

@@ -1491,3 +1631,3 @@ operator: "=",

var ret = _this20.setValue(bodyClosure()); // notice: never return Break or Continue!
var ret = _this19.setValue(bodyClosure()); // notice: never return Break or Continue!

@@ -1517,4 +1657,4 @@

_proto.withStatementHandler = function withStatementHandler(node) {
var _this21 = this;
_proto2.withStatementHandler = function withStatementHandler(node) {
var _this20 = this;

@@ -1524,7 +1664,7 @@ var objectClosure = this.createClosure(node.object);

return function () {
var currentScope = _this21.getCurrentScope();
var currentScope = _this20.getCurrentScope();
var newScope = createScope(currentScope, "with");
var data = objectClosure(); // newScope.data = data;
// copy all property
// copy all properties

@@ -1535,8 +1675,8 @@ for (var k in data) {

_this21.setCurrentScope(newScope); // save last value
_this20.setCurrentScope(newScope); // save last value
var result = _this21.setValue(bodyClosure());
var result = _this20.setValue(bodyClosure());
_this21.setCurrentScope(currentScope);
_this20.setCurrentScope(currentScope);

@@ -1547,8 +1687,8 @@ return result;

_proto.throwStatementHandler = function throwStatementHandler(node) {
var _this22 = this;
_proto2.throwStatementHandler = function throwStatementHandler(node) {
var _this21 = this;
var argumentClosure = this.createClosure(node.argument);
return function () {
_this22.setValue(undefined);
_this21.setValue(undefined);

@@ -1560,4 +1700,4 @@ throw argumentClosure();

_proto.tryStatementHandler = function tryStatementHandler(node) {
var _this23 = this;
_proto2.tryStatementHandler = function tryStatementHandler(node) {
var _this22 = this;

@@ -1568,9 +1708,9 @@ var blockClosure = this.createClosure(node.block);

return function () {
var currentScope = _this23.getCurrentScope();
var currentScope = _this22.getCurrentScope();
var currentContext = _this23.getCurrentContext();
var currentContext = _this22.getCurrentContext();
var labelStack = currentScope.labelStack.concat([]);
var callStack = _this23.callStack.concat([]);
var callStack = _this22.callStack.concat([]);

@@ -1582,6 +1722,6 @@ var result = EmptyStatementReturn;

var reset = function reset() {
_this23.setCurrentScope(currentScope); //reset scope
_this22.setCurrentScope(currentScope); //reset scope
_this23.setCurrentContext(currentContext); //reset context
_this22.setCurrentContext(currentContext); //reset context

@@ -1591,3 +1731,3 @@

_this23.callStack = callStack; //reset call stack
_this22.callStack = callStack; //reset call stack
};

@@ -1607,3 +1747,3 @@ /**

try {
result = _this23.setValue(blockClosure());
result = _this22.setValue(blockClosure());

@@ -1616,3 +1756,3 @@ if (result instanceof Return) {

if (_this23.isInterruptThrow(err)) {
if (_this22.isInterruptThrow(err)) {
throw err;

@@ -1623,3 +1763,3 @@ }

try {
result = _this23.setValue(handlerClosure(err));
result = _this22.setValue(handlerClosure(err));

@@ -1632,3 +1772,3 @@ if (result instanceof Return) {

if (_this23.isInterruptThrow(err)) {
if (_this22.isInterruptThrow(err)) {
throw err;

@@ -1656,3 +1796,3 @@ } // save catch throw error

if (_this23.isInterruptThrow(err)) {
if (_this22.isInterruptThrow(err)) {
throw err;

@@ -1681,4 +1821,4 @@ } // save finally throw error

_proto.catchClauseHandler = function catchClauseHandler(node) {
var _this24 = this;
_proto2.catchClauseHandler = function catchClauseHandler(node) {
var _this23 = this;

@@ -1690,3 +1830,3 @@ var paramNameGetter = this.createParamNameGetter(node.param);

var currentScope = _this24.getCurrentScope();
var currentScope = _this23.getCurrentScope();

@@ -1716,3 +1856,3 @@ var scopeData = currentScope.data; // get param name "e"

_proto.continueStatementHandler = function continueStatementHandler(node) {
_proto2.continueStatementHandler = function continueStatementHandler(node) {
return function () {

@@ -1723,3 +1863,3 @@ return node.label ? new ContinueLabel(node.label.name) : Continue;

_proto.breakStatementHandler = function breakStatementHandler(node) {
_proto2.breakStatementHandler = function breakStatementHandler(node) {
return function () {

@@ -1730,8 +1870,8 @@ return node.label ? new BreakLabel(node.label.name) : Break;

_proto.switchStatementHandler = function switchStatementHandler(node) {
var _this25 = this;
_proto2.switchStatementHandler = function switchStatementHandler(node) {
var _this24 = this;
var discriminantClosure = this.createClosure(node.discriminant);
var caseClosures = node.cases.map(function (item) {
return _this25.switchCaseHandler(item);
return _this24.switchCaseHandler(item);
});

@@ -1755,3 +1895,3 @@ return function () {

match = true;
ret = _this25.setValue(item.bodyClosure()); // notice: never return Break!
ret = _this24.setValue(item.bodyClosure()); // notice: never return Break!

@@ -1773,3 +1913,3 @@ if (ret === EmptyStatementReturn) continue;

if (!match && defaultCase) {
ret = _this25.setValue(defaultCase.bodyClosure());
ret = _this24.setValue(defaultCase.bodyClosure());
var isEBC = ret === EmptyStatementReturn || ret === Break || ret === Continue; // notice: never return Break or Continue!

@@ -1786,3 +1926,3 @@

_proto.switchCaseHandler = function switchCaseHandler(node) {
_proto2.switchCaseHandler = function switchCaseHandler(node) {
var testClosure = node.test ? this.createClosure(node.test) : function () {

@@ -1804,4 +1944,4 @@ return DefaultCase;

_proto.labeledStatementHandler = function labeledStatementHandler(node) {
var _this26 = this;
_proto2.labeledStatementHandler = function labeledStatementHandler(node) {
var _this25 = this;

@@ -1813,3 +1953,3 @@ var labelName = node.label.name;

var currentScope = _this26.getCurrentScope();
var currentScope = _this25.getCurrentScope();

@@ -1828,3 +1968,3 @@ currentScope.labelStack.push(labelName);

_proto.debuggerStatementHandler = function debuggerStatementHandler(node) {
_proto2.debuggerStatementHandler = function debuggerStatementHandler(node) {
return function () {

@@ -1837,3 +1977,3 @@ debugger;

_proto.createParamNameGetter = function createParamNameGetter(node) {
_proto2.createParamNameGetter = function createParamNameGetter(node) {
if (node.type === "Identifier") {

@@ -1848,3 +1988,3 @@ return function () {

_proto.createObjectKeyGetter = function createObjectKeyGetter(node) {
_proto2.createObjectKeyGetter = function createObjectKeyGetter(node) {
var getter; // var obj = { title: "" }

@@ -1867,3 +2007,3 @@

_proto.createMemberKeyGetter = function createMemberKeyGetter(node) {
_proto2.createMemberKeyGetter = function createMemberKeyGetter(node) {
// s['a']; node.computed = true

@@ -1875,4 +2015,4 @@ // s.foo; node.computed = false

_proto.createObjectGetter = function createObjectGetter(node) {
var _this27 = this;
_proto2.createObjectGetter = function createObjectGetter(node) {
var _this26 = this;

@@ -1882,3 +2022,3 @@ switch (node.type) {

return function () {
return _this27.getScopeDataFromName(node.name, _this27.getCurrentScope());
return _this26.getScopeDataFromName(node.name, _this26.getCurrentScope());
};

@@ -1895,3 +2035,3 @@

_proto.createNameGetter = function createNameGetter(node) {
_proto2.createNameGetter = function createNameGetter(node) {
switch (node.type) {

@@ -1911,3 +2051,3 @@ case "Identifier":

_proto.varDeclaration = function varDeclaration(name) {
_proto2.varDeclaration = function varDeclaration(name) {
var context = this.collectDeclVars;

@@ -1917,3 +2057,3 @@ context[name] = undefined;

_proto.funcDeclaration = function funcDeclaration(name, func) {
_proto2.funcDeclaration = function funcDeclaration(name, func) {
var context = this.collectDeclFuncs;

@@ -1923,3 +2063,3 @@ context[name] = func;

_proto.addDeclarationsToScope = function addDeclarationsToScope(declVars, declFuncs, scope) {
_proto2.addDeclarationsToScope = function addDeclarationsToScope(declVars, declFuncs, scope) {
var scopeData = scope.data;

@@ -1932,5 +2072,5 @@

for (var _key3 in declVars) {
if (!(_key3 in scopeData)) {
scopeData[_key3] = void 0;
for (var _key5 in declVars) {
if (!(_key5 in scopeData)) {
scopeData[_key5] = void 0;
}

@@ -1940,3 +2080,3 @@ }

_proto.getScopeValue = function getScopeValue(name, startScope) {
_proto2.getScopeValue = function getScopeValue(name, startScope) {
var scope = this.getScopeFromName(name, startScope);

@@ -1946,7 +2086,7 @@ return scope.data[name];

_proto.getScopeDataFromName = function getScopeDataFromName(name, startScope) {
_proto2.getScopeDataFromName = function getScopeDataFromName(name, startScope) {
return this.getScopeFromName(name, startScope).data;
};
_proto.getScopeFromName = function getScopeFromName(name, startScope) {
_proto2.getScopeFromName = function getScopeFromName(name, startScope) {
var scope = startScope;

@@ -1961,14 +2101,6 @@

return this.rootScope;
return this.globalScope;
};
_proto.getCurrentScope = function getCurrentScope() {
return this.currentScope;
};
_proto.getCurrentContext = function getCurrentContext() {
return this.currentContext;
};
_proto.setValue = function setValue(value) {
_proto2.setValue = function setValue(value) {
var isFunctionCall = this.callStack.length;

@@ -1984,3 +2116,3 @@

_proto.getValue = function getValue() {
_proto2.getValue = function getValue() {
return this.value;

@@ -1992,8 +2124,12 @@ };

Interpreter.version = version;
Interpreter.eval = IEval;
Interpreter.Function = IFunction;
Interpreter.ecmaVersion = 5; // alert.call(rootContext, 1);
// But alert({}, 1); // Illegal invocation
Interpreter.eval = internalEval;
Interpreter.Function = internalFunction;
Interpreter.ecmaVersion = 5; // alert.call(globalContextInFunction, 1);
// fix: alert.call({}, 1); // Illegal invocation
// function func(){
// this;// Interpreter.globalContextInFunction
// }
// func()
Interpreter.rootContext = void 0;
Interpreter.globalContextInFunction = void 0;
Interpreter.global = Object.create(null);

4

dist/esm/vm.js

@@ -25,3 +25,5 @@ import { Interpreter } from "./interpreter/main"; // TODO:

ecmaVersion: options.ecmaVersion,
timeout: timeout
timeout: timeout,
rootContext: options.rootContext,
globalContextInFunction: options.globalContextInFunction
});

@@ -28,0 +30,0 @@ return interpreter.evaluate(wrapCode);

202

lib/interpreter/main.d.ts
import { MessageItem } from "./messages";
import { Node, ESTree } from "./nodes";
declare const IEval: unique symbol;
declare const IFunction: unique symbol;
declare type Getter = () => any;

@@ -20,3 +18,5 @@ interface BaseClosure {

timeout?: number;
initEnv?: (inst: Interpreter) => void;
rootContext?: Context | null;
globalContextInFunction?: any;
_initEnv?: (this: Interpreter) => void;
}

@@ -29,24 +29,54 @@ interface CollectDeclarations {

[prop: number]: any;
[IEval]?: (code: string, useGlobalScope: boolean) => any;
[IFunction]?: (...params: string[]) => (...args: any[]) => any;
};
declare type Context = {
[prop: string]: any;
[prop: number]: any;
};
interface GeneratorReflection {
getOptions(): Readonly<Options>;
getCurrentScope(): Scope;
getGlobalScope(): Scope;
getCurrentContext(): Context;
getExecStartTime(): number;
}
declare class InternalInternalReflection {
protected interpreter: Interpreter;
constructor(interpreter: Interpreter);
generator(): GeneratorReflection;
}
declare function internalEval(reflection: InternalInternalReflection, code?: string, useGlobalScope?: boolean): any;
declare function internalFunction(reflection: InternalInternalReflection, ...params: string[]): (...args: any[]) => any;
/**
* scope chain
*
* superScope
* ↓
* rootScope
* ↓
* globalScope
* ↓
* functionScope
*
*/
declare class Scope {
name: string | undefined;
parent: Scope | null;
data: ScopeData;
readonly name: string | undefined;
readonly parent: Scope | null;
readonly data: ScopeData;
labelStack: string[];
constructor(data: ScopeData, parent?: Scope | null, name?: string);
}
declare type Context = {
[prop: string]: any;
[prop: number]: any;
};
export declare class Interpreter {
value: any;
static readonly version: string;
static readonly eval: typeof internalEval;
static readonly Function: typeof internalFunction;
static ecmaVersion: ECMA_VERSION;
static globalContextInFunction: any;
static global: Context;
protected value: any;
protected context: Context | Scope;
protected rootContext: Context;
protected globalContext: Context;
protected source: string;
protected sourceList: string[];
protected currentScope: Scope;
protected rootScope: Scope;
protected globalScope: Scope;
protected currentContext: Context;

@@ -62,12 +92,13 @@ protected options: Options;

protected execEndTime: number;
static readonly version = "1.3.1";
static readonly eval: symbol;
static readonly Function: symbol;
static ecmaVersion: ECMA_VERSION;
static rootContext: undefined;
static global: any;
constructor(context?: Context | Scope, options?: Options);
protected initEnvironment(ctx: Context | Scope): void;
isInterruptThrow<T>(err: T): boolean;
getSuperScope(ctx: Context): Scope;
getExecStartTime(): number;
getExecutionTime(): number;
setExecTimeout(timeout?: number): void;
getOptions(): Readonly<Options>;
protected getGlobalScope(): Scope;
protected getCurrentScope(): Scope;
protected getCurrentContext(): Context;
protected isInterruptThrow<T>(err: T): boolean;
protected createSuperScope(ctx: Context): Scope;
protected setCurrentContext(ctx: Context): void;

@@ -77,32 +108,31 @@ protected setCurrentScope(scope: Scope): void;

appendCode(code: string): any;
evaluateNode(node: ESTree.Program, source?: string): any;
getExecutionTime(): number;
createErrorMessage(msg: MessageItem, value: string | number, node?: Node | null): string;
createError<T>(message: string, error: {
protected evaluateNode(node: ESTree.Program, source?: string): any;
protected createErrorMessage(msg: MessageItem, value: string | number, node?: Node | null): string;
protected createError<T>(message: string, error: {
new (msg: string): T;
}): T;
createThrowError<T>(message: string, error: {
protected createThrowError<T>(message: string, error: {
new (msg: string): T;
}): T;
createInternalThrowError<T extends MessageItem>(msg: T, value: string | number, node?: Node | null): Error;
setExecTimeout(timeout?: number): void;
protected createInternalThrowError<T extends MessageItem>(msg: T, value: string | number, node?: Node | null): Error;
protected checkTimeout(): boolean;
getNodePosition(node: (Node & {
protected getNodePosition(node: (Node & {
start?: number;
end?: number;
}) | null): string;
createClosure(node: Node): BaseClosure;
binaryExpressionHandler(node: ESTree.BinaryExpression): BaseClosure;
logicalExpressionHandler(node: ESTree.LogicalExpression): BaseClosure;
unaryExpressionHandler(node: ESTree.UnaryExpression): BaseClosure;
updateExpressionHandler(node: ESTree.UpdateExpression): BaseClosure;
objectExpressionHandler(node: ESTree.ObjectExpression): () => {};
arrayExpressionHandler(node: ESTree.ArrayExpression): () => any[];
safeObjectGet(obj: any, key: any, node: Node): any;
createCallFunctionGetter(node: Node & {
protected createClosure(node: Node): BaseClosure;
protected binaryExpressionHandler(node: ESTree.BinaryExpression): BaseClosure;
protected logicalExpressionHandler(node: ESTree.LogicalExpression): BaseClosure;
protected isRootScope(node: ESTree.Expression | ESTree.Pattern): boolean;
protected unaryExpressionHandler(node: ESTree.UnaryExpression): BaseClosure;
protected updateExpressionHandler(node: ESTree.UpdateExpression): BaseClosure;
protected objectExpressionHandler(node: ESTree.ObjectExpression): () => {};
protected arrayExpressionHandler(node: ESTree.ArrayExpression): () => any[];
protected safeObjectGet(obj: any, key: any, node: Node): any;
protected createCallFunctionGetter(node: Node & {
start?: number;
end?: number;
}): () => any;
callExpressionHandler(node: ESTree.CallExpression): BaseClosure;
functionExpressionHandler(node: (ESTree.FunctionExpression & {
protected callExpressionHandler(node: ESTree.CallExpression): BaseClosure;
protected functionExpressionHandler(node: (ESTree.FunctionExpression & {
start?: number;

@@ -114,7 +144,7 @@ end?: number;

})): BaseClosure;
newExpressionHandler(node: ESTree.NewExpression): BaseClosure;
memberExpressionHandler(node: ESTree.MemberExpression): BaseClosure;
thisExpressionHandler(node: ESTree.ThisExpression): BaseClosure;
sequenceExpressionHandler(node: ESTree.SequenceExpression): BaseClosure;
literalHandler(node: ESTree.Literal & {
protected newExpressionHandler(node: ESTree.NewExpression): BaseClosure;
protected memberExpressionHandler(node: ESTree.MemberExpression): BaseClosure;
protected thisExpressionHandler(node: ESTree.ThisExpression): BaseClosure;
protected sequenceExpressionHandler(node: ESTree.SequenceExpression): BaseClosure;
protected literalHandler(node: ESTree.Literal & {
regex?: {

@@ -125,44 +155,42 @@ pattern: string;

}): BaseClosure;
identifierHandler(node: ESTree.Identifier): BaseClosure;
assignmentExpressionHandler(node: ESTree.AssignmentExpression): BaseClosure;
functionDeclarationHandler(node: ESTree.FunctionDeclaration): BaseClosure;
getVariableName(node: ESTree.Pattern): never | string;
variableDeclarationHandler(node: ESTree.VariableDeclaration): BaseClosure;
assertVariable(data: ScopeData, name: string, node: Node): void | never;
programHandler(node: ESTree.Program | ESTree.BlockStatement): BaseClosure;
expressionStatementHandler(node: ESTree.ExpressionStatement): BaseClosure;
emptyStatementHandler(node: Node): BaseClosure;
returnStatementHandler(node: ESTree.ReturnStatement): BaseClosure;
ifStatementHandler(node: ESTree.IfStatement | ESTree.ConditionalExpression): BaseClosure;
conditionalExpressionHandler(node: ESTree.ConditionalExpression): BaseClosure;
forStatementHandler(node: ESTree.ForStatement | ESTree.WhileStatement | ESTree.DoWhileStatement): BaseClosure;
whileStatementHandler(node: ESTree.WhileStatement): BaseClosure;
doWhileStatementHandler(node: ESTree.DoWhileStatement): BaseClosure;
forInStatementHandler(node: ESTree.ForInStatement): BaseClosure;
withStatementHandler(node: ESTree.WithStatement): BaseClosure;
throwStatementHandler(node: ESTree.ThrowStatement): BaseClosure;
tryStatementHandler(node: ESTree.TryStatement): BaseClosure;
catchClauseHandler(node: ESTree.CatchClause): (e: Error) => any;
continueStatementHandler(node: ESTree.ContinueStatement): BaseClosure;
breakStatementHandler(node: ESTree.BreakStatement): BaseClosure;
switchStatementHandler(node: ESTree.SwitchStatement): BaseClosure;
switchCaseHandler(node: ESTree.SwitchCase): SwitchCaseClosure;
labeledStatementHandler(node: ESTree.LabeledStatement): BaseClosure;
debuggerStatementHandler(node: ESTree.DebuggerStatement): BaseClosure;
createParamNameGetter(node: ESTree.Pattern): ReturnStringClosure;
createObjectKeyGetter(node: ESTree.Expression): Getter;
createMemberKeyGetter(node: ESTree.MemberExpression): Getter;
createObjectGetter(node: ESTree.Expression | ESTree.Pattern): Getter;
createNameGetter(node: ESTree.Expression | ESTree.Pattern): Getter;
varDeclaration(name: string): void;
funcDeclaration(name: string, func: () => any): void;
addDeclarationsToScope(declVars: CollectDeclarations, declFuncs: CollectDeclarations, scope: Scope): void;
getScopeValue(name: string, startScope: Scope): any;
getScopeDataFromName(name: string, startScope: Scope): ScopeData;
getScopeFromName(name: string, startScope: Scope): Scope;
getCurrentScope(): Scope;
getCurrentContext(): Context;
setValue(value: any): any;
protected identifierHandler(node: ESTree.Identifier): BaseClosure;
protected assignmentExpressionHandler(node: ESTree.AssignmentExpression): BaseClosure;
protected functionDeclarationHandler(node: ESTree.FunctionDeclaration): BaseClosure;
protected getVariableName(node: ESTree.Pattern): never | string;
protected variableDeclarationHandler(node: ESTree.VariableDeclaration): BaseClosure;
protected assertVariable(data: ScopeData, name: string, node: Node): void | never;
protected programHandler(node: ESTree.Program | ESTree.BlockStatement): BaseClosure;
protected expressionStatementHandler(node: ESTree.ExpressionStatement): BaseClosure;
protected emptyStatementHandler(node: Node): BaseClosure;
protected returnStatementHandler(node: ESTree.ReturnStatement): BaseClosure;
protected ifStatementHandler(node: ESTree.IfStatement | ESTree.ConditionalExpression): BaseClosure;
protected conditionalExpressionHandler(node: ESTree.ConditionalExpression): BaseClosure;
protected forStatementHandler(node: ESTree.ForStatement | ESTree.WhileStatement | ESTree.DoWhileStatement): BaseClosure;
protected whileStatementHandler(node: ESTree.WhileStatement): BaseClosure;
protected doWhileStatementHandler(node: ESTree.DoWhileStatement): BaseClosure;
protected forInStatementHandler(node: ESTree.ForInStatement): BaseClosure;
protected withStatementHandler(node: ESTree.WithStatement): BaseClosure;
protected throwStatementHandler(node: ESTree.ThrowStatement): BaseClosure;
protected tryStatementHandler(node: ESTree.TryStatement): BaseClosure;
protected catchClauseHandler(node: ESTree.CatchClause): (e: Error) => any;
protected continueStatementHandler(node: ESTree.ContinueStatement): BaseClosure;
protected breakStatementHandler(node: ESTree.BreakStatement): BaseClosure;
protected switchStatementHandler(node: ESTree.SwitchStatement): BaseClosure;
protected switchCaseHandler(node: ESTree.SwitchCase): SwitchCaseClosure;
protected labeledStatementHandler(node: ESTree.LabeledStatement): BaseClosure;
protected debuggerStatementHandler(node: ESTree.DebuggerStatement): BaseClosure;
protected createParamNameGetter(node: ESTree.Pattern): ReturnStringClosure;
protected createObjectKeyGetter(node: ESTree.Expression): Getter;
protected createMemberKeyGetter(node: ESTree.MemberExpression): Getter;
protected createObjectGetter(node: ESTree.Expression | ESTree.Pattern): Getter;
protected createNameGetter(node: ESTree.Expression | ESTree.Pattern): Getter;
protected varDeclaration(name: string): void;
protected funcDeclaration(name: string, func: () => any): void;
protected addDeclarationsToScope(declVars: CollectDeclarations, declFuncs: CollectDeclarations, scope: Scope): void;
protected getScopeValue(name: string, startScope: Scope): any;
protected getScopeDataFromName(name: string, startScope: Scope): ScopeData;
protected getScopeFromName(name: string, startScope: Scope): Scope;
protected setValue(value: any): any;
getValue(): any;
}
export {};

313

lib/interpreter/main.js
import { parse } from "acorn";
import { Messages, InterruptThrowError, InterruptThrowReferenceError, InterruptThrowSyntaxError, } from "./messages";
const version = "1.3.1";
const version = "%VERSION%";
function defineFunctionName(func, name) {

@@ -17,7 +17,81 @@ Object.defineProperty(func, "name", {

const EmptyStatementReturn = Symbol("EmptyStatementReturn");
const IEval = Symbol("IEval");
const IFunction = Symbol("IFunction");
function isFunction(func) {
return typeof func === "function";
}
class InternalInternalReflection {
constructor(interpreter) {
this.interpreter = interpreter;
}
generator() {
const interpreter = this.interpreter;
function getCurrentScope() {
return this.getCurrentScope();
}
function getGlobalScope() {
return this.getGlobalScope();
}
function getCurrentContext() {
return this.getCurrentContext();
}
return {
getOptions: interpreter.getOptions.bind(interpreter),
getCurrentScope: getCurrentScope.bind(interpreter),
getGlobalScope: getGlobalScope.bind(interpreter),
getCurrentContext: getCurrentContext.bind(interpreter),
getExecStartTime: interpreter.getExecStartTime.bind(interpreter),
};
}
}
function internalEval(reflection, code, useGlobalScope = true) {
if (!(reflection instanceof InternalInternalReflection)) {
throw new Error("Illegal call");
}
if (typeof code !== "string")
return code;
if (!code)
return void 0;
const instance = reflection.generator();
const opts = instance.getOptions();
const options = {
timeout: opts.timeout,
_initEnv: function () {
// set caller context
if (!useGlobalScope) {
this.setCurrentContext(instance.getCurrentContext());
}
// share timeout
this.execStartTime = instance.getExecStartTime();
this.execEndTime = this.execStartTime;
},
};
const currentScope = useGlobalScope ? instance.getGlobalScope() : instance.getCurrentScope();
const interpreter = new Interpreter(currentScope, options);
return interpreter.evaluate(code);
}
Object.defineProperty(internalEval, "__IS_EVAL_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false,
});
function internalFunction(reflection, ...params) {
if (!(reflection instanceof InternalInternalReflection)) {
throw new Error("Illegal call");
}
const instance = reflection.generator();
const code = params.pop();
const interpreter = new Interpreter(instance.getGlobalScope(), instance.getOptions());
const wrapCode = `
(function anonymous(${params.join(",")}){
${code}
});
`;
return interpreter.evaluate(wrapCode);
}
Object.defineProperty(internalFunction, "__IS_FUNCTION_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false,
});
class Return {

@@ -38,2 +112,14 @@ constructor(value) {

}
/**
* scope chain
*
* superScope
* ↓
* rootScope
* ↓
* globalScope
* ↓
* functionScope
*
*/
class Scope {

@@ -76,2 +162,4 @@ constructor(data, parent = null, name) {

unescape,
eval: internalEval,
Function: internalFunction,
};

@@ -118,7 +206,11 @@ // ES5 Object

timeout: options.timeout || 0,
initEnv: options.initEnv,
rootContext: options.rootContext,
globalContextInFunction: options.globalContextInFunction === undefined
? Interpreter.globalContextInFunction
: options.globalContextInFunction,
_initEnv: options._initEnv,
};
this.context = context;
this.context = context || Object.create(null);
this.callStack = [];
this.initEnvironment(context);
this.initEnvironment(this.context);
}

@@ -132,18 +224,13 @@ initEnvironment(ctx) {

else {
const superScope = this.getSuperScope(ctx);
// replace Interpreter.eval and Interpreter.Function
Object.keys(ctx).forEach(key => {
if (ctx[key] === IEval) {
ctx[key] = superScope.data[IEval];
}
if (ctx[key] === IFunction) {
ctx[key] = superScope.data[IFunction];
}
});
scope = new Scope(ctx, superScope, "root");
let rootScope = null;
const superScope = this.createSuperScope(ctx);
if (this.options.rootContext) {
rootScope = new Scope(this.options.rootContext, superScope, "rootScope");
}
scope = new Scope(ctx, rootScope || superScope, "globalScope");
}
this.rootScope = scope;
this.currentScope = this.rootScope;
//init global context == this
this.rootContext = scope.data;
this.globalScope = scope;
this.currentScope = this.globalScope;
//init global context to this
this.globalContext = scope.data;
this.currentContext = scope.data;

@@ -155,7 +242,28 @@ // collect var/function declare

this.execEndTime = this.execStartTime;
const initEnv = this.options.initEnv;
if (initEnv) {
initEnv(this);
const _initEnv = this.options._initEnv;
if (_initEnv) {
_initEnv.call(this);
}
}
getExecStartTime() {
return this.execStartTime;
}
getExecutionTime() {
return this.execEndTime - this.execStartTime;
}
setExecTimeout(timeout = 0) {
this.options.timeout = timeout;
}
getOptions() {
return this.options;
}
getGlobalScope() {
return this.globalScope;
}
getCurrentScope() {
return this.currentScope;
}
getCurrentContext() {
return this.currentContext;
}
isInterruptThrow(err) {

@@ -166,49 +274,7 @@ return (err instanceof InterruptThrowError ||

}
getSuperScope(ctx) {
let data = Object.assign({}, BuildInObjects);
data.eval = (code, useGlobalScope = true) => {
if (typeof code !== "string")
return code;
if (!code)
return void 0;
const options = {
timeout: this.options.timeout,
initEnv: inst => {
// set caller context
if (!useGlobalScope) {
inst.setCurrentContext(this.getCurrentContext());
}
inst.execStartTime = this.execStartTime;
inst.execEndTime = inst.execStartTime;
},
};
const currentScope = useGlobalScope ? this.rootScope : this.getCurrentScope();
const interpreter = new Interpreter(currentScope, options);
return interpreter.evaluate(code);
createSuperScope(ctx) {
let data = {
...BuildInObjects,
};
Object.defineProperty(data.eval, "__IS_EVAL_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false,
});
data.Function = (...params) => {
const code = params.pop();
const interpreter = new Interpreter(this.rootScope, this.options);
const wrapCode = `
(function anonymous(${params.join(",")}){
${code}
});
`;
return interpreter.evaluate(wrapCode);
};
Object.defineProperty(data.Function, "__IS_FUNCTION_FUNC", {
value: true,
writable: false,
enumerable: false,
configurable: false,
});
const buildInObjectKeys = Object.keys(data);
data[IEval] = data.eval;
data[IFunction] = data.Function;
buildInObjectKeys.forEach(key => {

@@ -219,3 +285,3 @@ if (key in ctx) {

});
return new Scope(data, null, "superRoot");
return new Scope(data, null, "superScope");
}

@@ -266,5 +332,2 @@ setCurrentContext(ctx) {

}
getExecutionTime() {
return this.execEndTime - this.execStartTime;
}
createErrorMessage(msg, value, node) {

@@ -286,5 +349,2 @@ let message = msg[1].replace("%0", String(value));

}
setExecTimeout(timeout = 0) {
this.options.timeout = timeout;
}
checkTimeout() {

@@ -500,2 +560,9 @@ if (!this.isRunning)

}
isRootScope(node) {
if (node.type === "Identifier") {
const scope = this.getScopeFromName(node.name, this.getCurrentScope());
return scope.name === "rootScope";
}
return false;
}
// typeof a !a()

@@ -508,2 +575,6 @@ unaryExpressionHandler(node) {

return () => {
// not allowed to delete root scope property
if (this.isRootScope(node.argument)) {
return false;
}
let obj = objectGetter();

@@ -664,12 +735,27 @@ const name = nameGetter();

}
// obj.eval = eval
// obj.eval(...)
if (func.__IS_EVAL_FUNC) {
return (code) => {
return func(code, true);
return func(new InternalInternalReflection(this), code, true);
};
}
// obj.func = Function
// obj.func(...)
if (func.__IS_FUNCTION_FUNC) {
return (...args) => {
return func(new InternalInternalReflection(this), ...args);
};
}
// method call
// eg：obj.say(...)
// eg: obj.say.call(...)
// eg: obj.say.apply(...)
// ======================
// obj.func(...)
// func = func.bind(obj)
// tips:
// test.call(ctx, ...) === test.call.bind(test)(ctx, ...)
// test.apply(ctx, ...) === test.apply.bind(test)(ctx, ...)
// test.f(...) === test.f.bind(test)(...)
// func(...) -> func.bind(obj)(...)
// func.call(...) -> obj.func.call.bind(obj.func)(...)
// func.apply(...) -> obj.func.apply.bind(obj.func)(...)
// ...others

@@ -679,3 +765,3 @@ return func.bind(obj);

default:
// test() or (0.test)() or a[1]() ...
// test() or (0,test)() or a[1]() ...
const closure = this.createClosure(node);

@@ -693,13 +779,31 @@ return () => {

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval
// calling eval scope check
// var geval = eval;
// geval("a+1");
if (node.type === "Identifier" && func.__IS_EVAL_FUNC) {
// var eval = eval;
// function test(){
// eval(...); //note: use local scope in eval5，but in Browser is use global scope
// }
if (node.type === "Identifier" && func.__IS_EVAL_FUNC && name === "eval") {
return (code) => {
const scope = this.getScopeFromName(name, this.getCurrentScope());
const isSuperScope = !scope.parent || this.rootScope === scope;
const useGlobalScope = !scope.parent ||
this.globalScope === scope ||
scope.name === "rootScope";
// use local scope if calling eval in super scope
return func(code, !isSuperScope);
return func(new InternalInternalReflection(this), code, !useGlobalScope);
};
}
// use global scope
// var g_eval = eval;
// g_eval("a+1");
//(0,eval)(...) ...eval alias
if (func.__IS_EVAL_FUNC) {
return (code) => {
return func(new InternalInternalReflection(this), code, true);
};
}
// Function('a', 'b', 'return a+b')
if (func.__IS_FUNCTION_FUNC) {
return (...args) => {
return func(new InternalInternalReflection(this), ...args);
};
}
// function call

@@ -709,3 +813,4 @@ // this = undefined

// test(...) === test.call(undefined, ...)
return func.bind(Interpreter.rootContext);
// fix: alert.call({}, ...) Illegal invocation
return func.bind(this.options.globalContextInFunction);
};

@@ -807,3 +912,3 @@ }

const construct = expression();
if (!isFunction(construct)) {
if (!isFunction(construct) || construct.__IS_EVAL_FUNC) {
const callee = node.callee;

@@ -813,2 +918,6 @@ const name = source.slice(callee.start, callee.end);

}
// new Function(...)
if (construct.__IS_FUNCTION_FUNC) {
return construct(new InternalInternalReflection(this), ...args.map(arg => arg()));
}
return new construct(...args.map(arg => arg()));

@@ -990,3 +1099,3 @@ };

assertVariable(data, name, node) {
if (data === this.rootScope.data && !(name in data)) {
if (data === this.globalScope.data && !(name in data)) {
throw this.createInternalThrowError(Messages.VariableUndefinedReferenceError, name, node);

@@ -1168,3 +1277,3 @@ }

// newScope.data = data;
// copy all property
// copy all properties
for (let k in data) {

@@ -1475,10 +1584,4 @@ newScope.data[k] = data[k];

} while ((scope = scope.parent));
return this.rootScope;
return this.globalScope;
}
getCurrentScope() {
return this.currentScope;
}
getCurrentContext() {
return this.currentContext;
}
setValue(value) {

@@ -1503,8 +1606,12 @@ const isFunctionCall = this.callStack.length;

Interpreter.version = version;
Interpreter.eval = IEval;
Interpreter.Function = IFunction;
Interpreter.eval = internalEval;
Interpreter.Function = internalFunction;
Interpreter.ecmaVersion = 5;
// alert.call(rootContext, 1);
// But alert({}, 1); // Illegal invocation
Interpreter.rootContext = void 0;
// alert.call(globalContextInFunction, 1);
// fix: alert.call({}, 1); // Illegal invocation
// function func(){
// this;// Interpreter.globalContextInFunction
// }
// func()
Interpreter.globalContextInFunction = void 0;
Interpreter.global = Object.create(null);

4

lib/types.d.ts

@@ -9,2 +9,4 @@ export declare type VMContext = {

ecmaVersion?: 3 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020;
rootContext?: VMContext | null;
globalContextInFunction?: any;
}

@@ -14,2 +16,4 @@ export interface ScriptOptions {

timeout?: number;
rootContext?: VMContext | null;
globalContextInFunction?: any;
}

2

lib/vm.js

@@ -18,2 +18,4 @@ import { Interpreter } from "./interpreter/main";

timeout,
rootContext: options.rootContext,
globalContextInFunction: options.globalContextInFunction,
});

@@ -20,0 +22,0 @@ return interpreter.evaluate(wrapCode);

14

package.json
{
"name": "eval5",
"version": "1.3.1",
"description": "A JavaScript interpreter, written completely in JavaScript",
"version": "1.4.0",
"description": "A JavaScript interpreter written in JavaScript",
"main": "./dist/cjs/index.js",

@@ -10,3 +10,3 @@ "module": "./dist/esm/index.js",

"start": "tsc -w",
"build": "run-s clear build:* bundle bundle:min",
"build": "run-s clear build:* bundle:dev bundle:prod bundle:banner",
"build:lib": "tsc",

@@ -16,4 +16,5 @@ "build:cjs": "babel lib --config-file=./babel.config.js --out-dir dist/cjs",

"clear": "rimraf lib dist umd",
"bundle": "packez bundle ./src/index.ts -d umd -c",
"bundle:min": "packez bundle ./src/index.ts -d umd --state min",
"bundle:dev": "packez bundle ./src/index.ts -d umd -c",
"bundle:prod": "packez bundle ./src/index.ts -d umd --state prod",
"bundle:banner": "node scripts/banner.js",
"test": "jest"

@@ -47,4 +48,7 @@ },

"@babel/cli": "^7.8.4",
"@types/fs-extra": "^8.1.0",
"@types/jest": "^24.0.25",
"babel-plugin-search-and-replace": "^1.0.1",
"babel-preset-packez": "^1.0.0",
"fs-extra": "^8.1.0",
"jest": "^24.9.0",

@@ -51,0 +55,0 @@ "npm-run-all": "^4.1.5",

223

README.md

@@ -7,26 +7,29 @@ # eval5

基于 JavaScript 编写的 JavaScript 解释器;A JavaScript interpreter, written completely in JavaScript;
A JavaScript interpreter written in JavaScript.
支持es5语法
[Try it out](https://bplok20010.github.io/eval5/)
> 解决在不支持`eval`或`Function`的执行环境下执行 JavaScript 代码。例如：微信小程序 [示例](https://github.com/bplok20010/eval5-wx-demo)。
## You may not need it unless
## Usage
- Need to execute code in the browser with a sandbox environment
- Controlling execution time
- JavaScript runtime environment that does not support `eval` and `Function`. for example: WeChat Mini Program [demo](https://github.com/bplok20010/eval5-wx-demo)
- Be interested or Be curious
`npm install --save eval5`
## Support
```javascript
import { evaluate, Function, vm, Interpreter } from "eval5";
ECMA5
// 设置默认作用域
Interpreter.global = window;
## Install
//或 evaluate("1+1", Object.create(window));
evaluate("1+1", window); // 2
```
npm install --save eval5
```
const func = new Function("a", "b", "return a+b;");
## Usage
console.log(func(1, 1)); // 2
```javascript
import { Interpreter } from "eval5";
const interpreter = new Interpreter(ctx, {
const interpreter = new Interpreter(window, {
timeout: 1000,

@@ -39,118 +42,157 @@ });

result = interpreter.evaluate("1+1");
console.log(result); //2
console.log(result);
interpreter.evaluate("var a=100");
interpreter.evaluate("var b=200");
result = interpreter.evaluate("a+b");
console.log(result);
} catch (e) {
//..
console.log(e);
}
```
## Options
```ts
interface Options {
timeout?: number;
rootContext?: {} | null;
globalContextInFunction?: any;
}
```
## Interpreter
### static `version`
**`version`**
VERSION
current version
### static `global`
**`global`**
`object` 默认：`Object.create(null)`
default: `{}`
设置默认作用域对象
global context
例如:
```javascript
```js
Interpreter.global = window;
const interpreter = new Interpreter();
```
### static `eval`
**`globalContextInFunction`**
`readonly`
default: `undefined`
替代原有的`eval`占位符
`eval5` does not support `use strict` mode, but the default value of `this` in function calls is `undefined`, you can set this property as the default.
> 如果执行环境支持 eval 函数建议使用原生的 eval，除非 eval 需要使用局部变量时，如下情况：
```js
import { Interpreter } from "Interpreter";
```javascript
const ctx = Object.create(window);
const ctx = {};
const interpreter = new Interpreter(ctx);
interpreter.evaluate(`
this; // ctx
function func(){
return this; // undefined
}
func();
`);
```
ctx.eval = Interpreter.eval;
```js
import { Interpreter } from "Interpreter";
const interpreter = new Interpreter(ctx);
Interpreter.globalContextInFunction = window;
const ctx = {};
const interpreter = new Interpreter({});
interpreter.evaluate(`
function test(){
var a = 1;
return eval('a+1')
}
test();
`); // output 2
this; // ctx
function func(){
return this; // window
}
func();
`);
```
### static `Function`
**Note: Illegal invocation**
`readonly`
e.g.
替代原有的`Function`占位符
```
import { Interpreter } from "Interpreter";
作用同`Interpreter.eval`
Interpreter.globalContextInFunction = {};
> 除非不支持`Function`的环境，否则不建议使用
const ctx = {alert: alert};
### static `ecmaVersion`
const interpreter = new Interpreter(ctx);
可选值： `3 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020`
interpreter.evaluate(`
// alert.call({}, 'Hello eval5')
// Illegal invocation
alert('Hello eval5');
`);
```
默认： `5`
**`constructor(context?: {}: options: Options = Interpreter.global)`**
> 注：eval5 只支持 es5 语法，如果将 ecmaVersion 设为高版本尽管能编译通过，但解释时可能会报错或得到错误结果。
## Instance methods
例如，如果设`ecmaVersion=6`或更高，以下代码可以正常解析执行，但结果非预期：
**`evaluate(code: string): any`**
```
const a = [];
for(let i = 0; i < 10; i++) {
a.push(function(){
console.log(i);
})
}
executes string code and returns the value of the last expression
...
```js
import { Interpreter } from "Interpreter";
// output: 10 10 10...
```
const interpreter = new Interpreter(window);
**原因在于解释器会忽略`const` `let`类型，都当作`var`处理。**
const result = interpreter.evaluate(`
var a = 100;
var b = 200;
### `constructor`(ctx: {}, options?: { timeout?: number})
a+b;
构造函数
`);
```javascript
var interpreter = new Interpreter(window);
console.log(result); // 300
```
### `evaluate`(code: string): any
**`appendCode(code: string): any`**
返回脚本中执行的最后一个表达式结果
alias of `evaluate`
```javascript
var interpreter = new Interpreter(window);
interpreter.evaluate("alert(1+1)");
```
**`getExecutionTime(): number`**
### appendCode(code: string): any
get the last execution time
作用同`evaluate`
**`setExecTimeout(): number`**
### setExecTimeout(timeout: number)
set the timeout for each execution
单位：ms
**`getOptions(): Readonly<Options>`**
获取`evaluate`的执行时间
get interpreter options
## evaluate(code: string, ctx?: {})
## evaluate(code: string, ctx?: {}, options?: Options)
执行给定的字符串脚本,返回脚本中执行的最后一个表达式结果
executes string code and returns the value of the last expression
```javascript
evaluate("console.log(1+1)", { console: console });
> note: a new interpreter is created with every execution
```js
import { evaluate } from "eval5";
evaluate(
`
var a = 100;
var b = 100;
console.log(a+b);
`,
{ console: console }
); // 200
evaluate(`
a;
`); // a is not defined
```

@@ -160,7 +202,9 @@

同 js 原生的 Function
use `Interpreter.global` as the default context, `Interpreter.globalContextInFunction` also
```javascript
```js
import { Function } from "eval5";
const func = new Function("a", "b", "return a+b;");
console.log(func(1, 2));
console.log(func(100, 200)); // 300
```

@@ -170,6 +214,4 @@

参考 `node.js vm`
see [vm](https://nodejs.org/dist/latest-v13.x/docs/api/vm.html)
支持 api 列表:
- vm.createContext

@@ -185,12 +227,5 @@ - vm.compileFunction

## Support
- ECMA5
## Related
[evaljs][]
[closure-interpreter][]
[evaljs]: https://github.com/marten-de-vries/evaljs
[closure-interpreter]: https://github.com/int3/closure-interpreter
- [evaljs](https://github.com/marten-de-vries/evaljs)
- [closure-interpreter](https://github.com/int3/closure-interpreter)
LICENSE

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umd/eval5.js

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umd/eval5.js.map

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umd/eval5.min.js

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umd/eval5.min.js.map

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