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| const { Parser } = require("acorn");
const fs = require("fs");
class Base {
shopOptions = [];
}
class Handle {
constructor(base) {
this.base = base;
}
async getShopOptions(platform, shopId) {
return 2;
}
getSkuWeight() {}
}
class Compile {
constructor(handle) {
this.handle = handle;
}
config = {
events: {
"base.shopOptions": "a.f.sd"
},
};
async execute() {
const events = this.config.events;
for (let [key, value] of Object.entries(events)) {
this.genFile(key, key);
this.genFile(key+'2', value);
const [context, expression] = value.includes(".")
? expression.split(".")
: [this.handle, value];
const res = this.parse(this.handle, value);
if (key.indexOf(".") > -1) {
const [_context, option] = key.split(".");
try {
this.handle[_context][option] = await res;
} catch (error) {
console.error(`${_context}中不存在${option}`);
}
} else if (key.indexOf("void") > -1) {
await res;
}
}
}
genFile(name, expression) {
fs.writeFileSync(
`./${name}.json`,
JSON.stringify(Parser.parse(expression), null, " ")
);
}
parse(context, expression) {
const ast = Parser.parse(expression);
const body = ast.body[0];
if (body.type === "ExpressionStatement") {
console.log('expression11111111111111111111111', expression);
return this.executeExpression(context, body.expression);
} else {
throw new Error(`不支持${body.type}类型`);
}
}
executeExpression(context, expression) {
switch (expression.type) {
case "CallExpression":
return this.executeCallExpression(context, expression);
case "MemberExpression":
return this.executeMemberExpression(context, expression);
case "BinaryExpression":
return this.executeBinaryExpression(context, expression);
case "ConditionalExpression":
return;
case "ObjectExpression":
return;
case "ArrayExpression":
return;
case "Literal":
return expression.value;
case "UnaryExpression":
return this.executeUnaryExpression(context, expression);
case "Identifier":
return expression.value;
default:
throw new Error(`不支持类型${expression.type}`);
}
}
executeMemberExpression(context, expression) {
const object = this.executeExpression(context, expression.object);
console.log(object);
}
executeCallExpression(context, expression) {
const callee = this.executeExpression(context, expression.callee);
return context[callee.name](
...expression.arguments.map((v) => v.value)
);
}
async executeBinaryExpression(context, expression) {
const left = await this.executeExpression(context, expression.left);
const right = await this.executeExpression(context, expression.right);
switch (expression.operator) {
case "+":
return left + right;
case "-":
return left - right;
case "*":
return left * right;
case "/":
return left / right;
case ">":
return left > right;
case "<":
return left < right;
case ">=":
return left >= right;
case "<=":
return left <= right;
case "==":
return left == right;
case "===":
return left === right;
}
}
async executeUnaryExpression(context, expression) {
const right = await this.executeExpression(context, expression.argument);
switch (expression.operator) {
case "!":
return !right;
case "-":
return -right;
case "+":
return +right;
}
}
}
const base = new Base();
const handle = new Handle(base);
const compile = new Compile(handle);
compile.execute();
|