@aws-cdk/aws-cloudwatch/lib/private/env-tokens.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.accountIfDifferentFromStack = exports.regionIfDifferentFromStack = void 0;
const cdk = require("@aws-cdk/core");
/**
 * Make a Token that renders to given region if used in a different stack, otherwise undefined
 */
function regionIfDifferentFromStack(region) {
    return cdk.Token.asString(new StackDependentToken(region, stack => stack.region));
}
exports.regionIfDifferentFromStack = regionIfDifferentFromStack;
/**
 * Make a Token that renders to given account if used in a different stack, otherwise undefined
 */
function accountIfDifferentFromStack(account) {
    return cdk.Token.asString(new StackDependentToken(account, stack => stack.account));
}
exports.accountIfDifferentFromStack = accountIfDifferentFromStack;
/**
 * A lazy token that requires an instance of Stack to evaluate
 */
class StackDependentToken {
    constructor(originalValue, fn) {
        this.originalValue = originalValue;
        this.fn = fn;
        this.creationStack = cdk.captureStackTrace();
    }
    resolve(context) {
        const stackValue = this.fn(cdk.Stack.of(context.scope));
        // Don't render if the values are definitely the same. If the stack
        // is unresolved we don't know, better output the value.
        if (!cdk.Token.isUnresolved(stackValue) && stackValue === this.originalValue) {
            return undefined;
        }
        return this.originalValue;
    }
    toString() {
        return cdk.Token.asString(this);
    }
    toJSON() {
        return this.originalValue;
    }
}
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