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<pre class="numbers"><code><span class="l"><a href="#1"> 1: </a></span><span class="l"><a href="#2"> 2: </a></span><span class="l"><a href="#3"> 3: </a></span><span class="l"><a href="#4"> 4: </a></span></span><span class="l"><a href="#5"> 5: </a></span></span><span class="l"><a href="#6"> 6: </a></span></span><span class="l"><a href="#7"> 7: </a></span></span><span class="l"><a href="#8"> 8: </a></span></span><span class="l"><a href="#9"> 9: </a></span></span><span class="l"><a href="#10">10: </a></span></span><span class="l"><a href="#11">11: </a></span></span><span class="l"><a href="#12">12: </a></span><span class="l"><a href="#13">13: </a></span><span class="l"><a href="#14">14: </a></span><span class="l"><a href="#15">15: </a></span><span class="l"><a href="#16">16: </a></span><span class="l"><a href="#17">17: </a></span><span class="l"><a href="#18">18: </a></span><span class="l"><a href="#19">19: </a></span></span><span class="l"><a href="#20">20: </a></span></span><span class="l"><a href="#21">21: </a></span></span><span class="l"><a href="#22">22: </a></span></span><span class="l"><a href="#23">23: </a></span></span><span class="l"><a href="#24">24: </a></span></span><span class="l"><a href="#25">25: </a></span></span><span class="l"><a href="#26">26: </a></span></span><span class="l"><a href="#27">27: </a></span><span class="l"><a href="#28">28: </a></span><span class="l"><a href="#29">29: </a></span><span class="l"><a href="#30">30: </a></span><span class="l"><a href="#31">31: </a></span><span class="l"><a href="#32">32: </a></span><span class="l"><a href="#33">33: </a></span></span><span class="l"><a href="#34">34: </a></span></span><span class="l"><a href="#35">35: </a></span></span><span class="l"><a href="#36">36: </a></span></span><span class="l"><a href="#37">37: </a></span></span><span class="l"><a href="#38">38: </a></span></span><span class="l"><a href="#39">39: </a></span></span><span class="l"><a href="#40">40: </a></span></span><span class="l"><a href="#41">41: </a></span></span><span class="l"><a href="#42">42: </a></span><span class="l"><a href="#43">43: </a></span><span class="l"><a href="#44">44: </a></span><span class="l"><a href="#45">45: </a></span></span><span class="l"><a href="#46">46: </a></span></span><span class="l"><a href="#47">47: </a></span></span><span class="l"><a href="#48">48: </a></span></span><span class="l"><a href="#49">49: </a></span></span><span class="l"><a href="#50">50: </a></span></span><span class="l"><a href="#51">51: </a></span></span><span class="l"><a href="#52">52: </a></span><span class="l"><a href="#53">53: </a></span><span class="l"><a href="#54">54: </a></span><span class="l"><a href="#55">55: </a></span></span><span class="l"><a href="#56">56: </a></span></span><span class="l"><a href="#57">57: </a></span></span><span class="l"><a href="#58">58: </a></span></span><span class="l"><a href="#59">59: </a></span></span><span class="l"><a href="#60">60: </a></span><span class="l"><a href="#61">61: </a></span><span class="l"><a href="#62">62: </a></span><span class="l"><a href="#63">63: </a></span></span><span class="l"><a href="#64">64: </a></span></span><span class="l"><a href="#65">65: </a></span></span><span class="l"><a href="#66">66: </a></span></span><span class="l"><a href="#67">67: </a></span></span><span class="l"><a href="#68">68: </a></span><span class="l"><a href="#69">69: </a></span><span class="l"><a href="#70">70: </a></span><span class="l"><a href="#71">71: </a></span></span><span class="l"><a href="#72">72: </a></span></span><span class="l"><a href="#73">73: </a></span></span><span class="l"><a href="#74">74: </a></span></span><span class="l"><a href="#75">75: </a></span><span class="l"><a href="#76">76: </a></span><span class="l"><a href="#77">77: </a></span><span class="l"><a href="#78">78: </a></span></span><span class="l"><a href="#79">79: </a></span></span><span class="l"><a href="#80">80: </a></span></span><span class="l"><a href="#81">81: </a></span></span><span class="l"><a href="#82">82: </a></span></span><span class="l"><a href="#83">83: </a></span></span><span class="l"><a href="#84">84: </a></span></span><span class="l"><a href="#85">85: </a></span></span><span class="l"><a href="#86">86: </a></span></span><span class="l"><a href="#87">87: </a></span></span><span class="l"><a href="#88">88: </a></span></span><span class="l"><a href="#89">89: </a></span></span><span class="l"><a href="#90">90: </a></span></span><span class="l"><a href="#91">91: </a></span><span class="l"><a href="#92">92: </a></span><span class="l"><a href="#93">93: </a></span><span class="l"><a href="#94">94: </a></span></code></pre>
<pre class="code"><code><span id="1" class="l"><span class="xlang"><?php</span>
</span><span id="2" class="l"><span class="php-keyword1">namespace</span> GuzzleHttp\Promise;
</span><span id="3" class="l">
</span><span id="4" class="l"><span class="php-comment">/**
</span></span><span id="5" class="l"><span class="php-comment"> * A promise represents the eventual result of an asynchronous operation.
</span></span><span id="6" class="l"><span class="php-comment"> *
</span></span><span id="7" class="l"><span class="php-comment"> * The primary way of interacting with a promise is through its then method,
</span></span><span id="8" class="l"><span class="php-comment"> * which registers callbacks to receive either a promise’s eventual value or
</span></span><span id="9" class="l"><span class="php-comment"> * the reason why the promise cannot be fulfilled.
</span></span><span id="10" class="l"><span class="php-comment"> *
</span></span><span id="11" class="l"><span class="php-comment"> * @link https://promisesaplus.com/
</span></span><span id="12" class="l"><span class="php-comment"> */</span>
</span><span id="13" class="l"><span class="php-keyword1">interface</span> PromiseInterface
</span><span id="14" class="l">{
</span><span id="15" class="l"> <span class="php-keyword1">const</span> PENDING = <span class="php-quote">'pending'</span>;
</span><span id="16" class="l"> <span class="php-keyword1">const</span> FULFILLED = <span class="php-quote">'fulfilled'</span>;
</span><span id="17" class="l"> <span class="php-keyword1">const</span> REJECTED = <span class="php-quote">'rejected'</span>;
</span><span id="18" class="l">
</span><span id="19" class="l"> <span class="php-comment">/**
</span></span><span id="20" class="l"><span class="php-comment"> * Appends fulfillment and rejection handlers to the promise, and returns
</span></span><span id="21" class="l"><span class="php-comment"> * a new promise resolving to the return value of the called handler.
</span></span><span id="22" class="l"><span class="php-comment"> *
</span></span><span id="23" class="l"><span class="php-comment"> * @param callable $onFulfilled Invoked when the promise fulfills.
</span></span><span id="24" class="l"><span class="php-comment"> * @param callable $onRejected Invoked when the promise is rejected.
</span></span><span id="25" class="l"><span class="php-comment"> *
</span></span><span id="26" class="l"><span class="php-comment"> * @return PromiseInterface
</span></span><span id="27" class="l"><span class="php-comment"> */</span>
</span><span id="28" class="l"> <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> then(
</span><span id="29" class="l"> <span class="php-keyword1">callable</span> <span class="php-var">$onFulfilled</span> = <span class="php-keyword1">null</span>,
</span><span id="30" class="l"> <span class="php-keyword1">callable</span> <span class="php-var">$onRejected</span> = <span class="php-keyword1">null</span>
</span><span id="31" class="l"> );
</span><span id="32" class="l">
</span><span id="33" class="l"> <span class="php-comment">/**
</span></span><span id="34" class="l"><span class="php-comment"> * Appends a rejection handler callback to the promise, and returns a new
</span></span><span id="35" class="l"><span class="php-comment"> * promise resolving to the return value of the callback if it is called,
</span></span><span id="36" class="l"><span class="php-comment"> * or to its original fulfillment value if the promise is instead
</span></span><span id="37" class="l"><span class="php-comment"> * fulfilled.
</span></span><span id="38" class="l"><span class="php-comment"> *
</span></span><span id="39" class="l"><span class="php-comment"> * @param callable $onRejected Invoked when the promise is rejected.
</span></span><span id="40" class="l"><span class="php-comment"> *
</span></span><span id="41" class="l"><span class="php-comment"> * @return PromiseInterface
</span></span><span id="42" class="l"><span class="php-comment"> */</span>
</span><span id="43" class="l"> <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> otherwise(<span class="php-keyword1">callable</span> <span class="php-var">$onRejected</span>);
</span><span id="44" class="l">
</span><span id="45" class="l"> <span class="php-comment">/**
</span></span><span id="46" class="l"><span class="php-comment"> * Get the state of the promise ("pending", "rejected", or "fulfilled").
</span></span><span id="47" class="l"><span class="php-comment"> *
</span></span><span id="48" class="l"><span class="php-comment"> * The three states can be checked against the constants defined on
</span></span><span id="49" class="l"><span class="php-comment"> * PromiseInterface: PENDING, FULFILLED, and REJECTED.
</span></span><span id="50" class="l"><span class="php-comment"> *
</span></span><span id="51" class="l"><span class="php-comment"> * @return string
</span></span><span id="52" class="l"><span class="php-comment"> */</span>
</span><span id="53" class="l"> <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> getState();
</span><span id="54" class="l">
</span><span id="55" class="l"> <span class="php-comment">/**
</span></span><span id="56" class="l"><span class="php-comment"> * Resolve the promise with the given value.
</span></span><span id="57" class="l"><span class="php-comment"> *
</span></span><span id="58" class="l"><span class="php-comment"> * @param mixed $value
</span></span><span id="59" class="l"><span class="php-comment"> * @throws \RuntimeException if the promise is already resolved.
</span></span><span id="60" class="l"><span class="php-comment"> */</span>
</span><span id="61" class="l"> <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> resolve(<span class="php-var">$value</span>);
</span><span id="62" class="l">
</span><span id="63" class="l"> <span class="php-comment">/**
</span></span><span id="64" class="l"><span class="php-comment"> * Reject the promise with the given reason.
</span></span><span id="65" class="l"><span class="php-comment"> *
</span></span><span id="66" class="l"><span class="php-comment"> * @param mixed $reason
</span></span><span id="67" class="l"><span class="php-comment"> * @throws \RuntimeException if the promise is already resolved.
</span></span><span id="68" class="l"><span class="php-comment"> */</span>
</span><span id="69" class="l"> <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> reject(<span class="php-var">$reason</span>);
</span><span id="70" class="l">
</span><span id="71" class="l"> <span class="php-comment">/**
</span></span><span id="72" class="l"><span class="php-comment"> * Cancels the promise if possible.
</span></span><span id="73" class="l"><span class="php-comment"> *
</span></span><span id="74" class="l"><span class="php-comment"> * @link https://github.com/promises-aplus/cancellation-spec/issues/7
</span></span><span id="75" class="l"><span class="php-comment"> */</span>
</span><span id="76" class="l"> <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> cancel();
</span><span id="77" class="l">
</span><span id="78" class="l"> <span class="php-comment">/**
</span></span><span id="79" class="l"><span class="php-comment"> * Waits until the promise completes if possible.
</span></span><span id="80" class="l"><span class="php-comment"> *
</span></span><span id="81" class="l"><span class="php-comment"> * Pass $unwrap as true to unwrap the result of the promise, either
</span></span><span id="82" class="l"><span class="php-comment"> * returning the resolved value or throwing the rejected exception.
</span></span><span id="83" class="l"><span class="php-comment"> *
</span></span><span id="84" class="l"><span class="php-comment"> * If the promise cannot be waited on, then the promise will be rejected.
</span></span><span id="85" class="l"><span class="php-comment"> *
</span></span><span id="86" class="l"><span class="php-comment"> * @param bool $unwrap
</span></span><span id="87" class="l"><span class="php-comment"> *
</span></span><span id="88" class="l"><span class="php-comment"> * @return mixed
</span></span><span id="89" class="l"><span class="php-comment"> * @throws \LogicException if the promise has no wait function or if the
</span></span><span id="90" class="l"><span class="php-comment"> * promise does not settle after waiting.
</span></span><span id="91" class="l"><span class="php-comment"> */</span>
</span><span id="92" class="l"> <span class="php-keyword1">public</span> <span class="php-keyword1">function</span> wait(<span class="php-var">$unwrap</span> = <span class="php-keyword1">true</span>);
</span><span id="93" class="l">}
</span><span id="94" class="l"></span></code></pre>
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