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<!doctype html>
<title>CodeMirror: C-like mode</title><meta charset="utf-8"/><link rel=stylesheet href="../../doc/docs.css">
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<ul> <li><a href="../../index.html">Home</a> <li><a href="../../doc/manual.html">Manual</a> <li><a href="https://github.com/codemirror/codemirror5">Code</a> </ul> <ul> <li><a href="../index.html">Language modes</a> <li><a class=active href="#">C-like</a> </ul></div>
<article><h2>C-like mode</h2>
<div><textarea id="c-code">/* C demo code */
#include <zmq.h>#include <pthread.h>#include <semaphore.h>#include <time.h>#include <stdio.h>#include <fcntl.h>#include <malloc.h>
typedef struct { void* arg_socket; zmq_msg_t* arg_msg; char* arg_string; unsigned long arg_len; int arg_int, arg_command;
int signal_fd; int pad; void* context; sem_t sem;} acl_zmq_context;
#define p(X) (context->arg_##X)
void* zmq_thread(void* context_pointer) { acl_zmq_context* context = (acl_zmq_context*)context_pointer; char ok = 'K', err = 'X'; int res;
while (1) { while ((res = sem_wait(&context->sem)) == EINTR); if (res) {write(context->signal_fd, &err, 1); goto cleanup;} switch(p(command)) { case 0: goto cleanup; case 1: p(socket) = zmq_socket(context->context, p(int)); break; case 2: p(int) = zmq_close(p(socket)); break; case 3: p(int) = zmq_bind(p(socket), p(string)); break; case 4: p(int) = zmq_connect(p(socket), p(string)); break; case 5: p(int) = zmq_getsockopt(p(socket), p(int), (void*)p(string), &p(len)); break; case 6: p(int) = zmq_setsockopt(p(socket), p(int), (void*)p(string), p(len)); break; case 7: p(int) = zmq_send(p(socket), p(msg), p(int)); break; case 8: p(int) = zmq_recv(p(socket), p(msg), p(int)); break; case 9: p(int) = zmq_poll(p(socket), p(int), p(len)); break; } p(command) = errno; write(context->signal_fd, &ok, 1); } cleanup: close(context->signal_fd); free(context_pointer); return 0;}
void* zmq_thread_init(void* zmq_context, int signal_fd) { acl_zmq_context* context = malloc(sizeof(acl_zmq_context)); pthread_t thread;
context->context = zmq_context; context->signal_fd = signal_fd; sem_init(&context->sem, 1, 0); pthread_create(&thread, 0, &zmq_thread, context); pthread_detach(thread); return context;}</textarea></div>
<h2>C++ example</h2>
<div><textarea id="cpp-code">#include <iostream>#include "mystuff/util.h"
namespace {enum Enum { VAL1, VAL2, VAL3};
char32_t unicode_string = U"\U0010FFFF";string raw_string = R"delim(anythingyouwant)delim";
int Helper(const MyType& param) { return 0;}} // namespace
class ForwardDec;
template <class T, class V>class Class : public BaseClass { const MyType<T, V> member_;
public: const MyType<T, V>& Method() const { return member_; }
void Method2(MyType<T, V>* value);}
template <class T, class V>void Class::Method2(MyType<T, V>* value) { std::out << 1 >> method(); value->Method3(member_); member_ = value;}</textarea></div>
<h2>Objective-C example</h2>
<div><textarea id="objectivec-code">/*This is a longer commentThat spans two lines*/
#import "MyClass.h"#import <AFramework/AFramework.h>@import BFrameworkModule;
NS_ENUM(SomeValues) { aValue = 1;};
// A Class Extension with some properties@interface MyClass ()<AProtocol>@property(atomic, readwrite, assign) NSInteger anInt;@property(nonatomic, strong, nullable) NSString *aString;@end
@implementation YourAppDelegate
- (instancetype)initWithString:(NSString *)aStringVar { if ((self = [super init])) { aString = aStringVar; } return self;}
- (BOOL)doSomething:(float)progress { NSString *myString = @"This is a ObjC string %f "; myString = [[NSString stringWithFormat:myString, progress] stringByAppendingString:self.aString]; return myString.length > 100 ? NO : YES;}
@end</textarea></div>
<h2>Java example</h2>
<div><textarea id="java-code">import com.demo.util.MyType;import com.demo.util.MyInterface;
public enum Enum { VAL1, VAL2, VAL3}
public class Class<T, V> implements MyInterface { public static final MyType<T, V> member; private class InnerClass { public int zero() { return 0; } }
@Override public MyType method() { return member; }
public void method2(MyType<T, V> value) { method(); value.method3(); member = value; }}</textarea></div>
<h2>Scala example</h2>
<div><textarea id="scala-code">object FilterTest extends App { def filter(xs: List[Int], threshold: Int) = { def process(ys: List[Int]): List[Int] = if (ys.isEmpty) ys else if (ys.head < threshold) ys.head :: process(ys.tail) else process(ys.tail) process(xs) } println(filter(List(1, 9, 2, 8, 3, 7, 4), 5))}</textarea></div>
<h2>Kotlin mode</h2>
<div><textarea id="kotlin-code">package org.wasabi.http
import java.util.concurrent.Executorsimport java.net.InetSocketAddressimport org.wasabi.app.AppConfigurationimport io.netty.bootstrap.ServerBootstrapimport io.netty.channel.nio.NioEventLoopGroupimport io.netty.channel.socket.nio.NioServerSocketChannelimport org.wasabi.app.AppServer
public class HttpServer(private val appServer: AppServer) {
val bootstrap: ServerBootstrap val primaryGroup: NioEventLoopGroup val workerGroup: NioEventLoopGroup
init { // Define worker groups primaryGroup = NioEventLoopGroup() workerGroup = NioEventLoopGroup()
// Initialize bootstrap of server bootstrap = ServerBootstrap()
bootstrap.group(primaryGroup, workerGroup) bootstrap.channel(javaClass<NioServerSocketChannel>()) bootstrap.childHandler(NettyPipelineInitializer(appServer)) }
public fun start(wait: Boolean = true) { val channel = bootstrap.bind(appServer.configuration.port)?.sync()?.channel()
if (wait) { channel?.closeFuture()?.sync() } }
public fun stop() { // Shutdown all event loops primaryGroup.shutdownGracefully() workerGroup.shutdownGracefully()
// Wait till all threads are terminated primaryGroup.terminationFuture().sync() workerGroup.terminationFuture().sync() }}</textarea></div>
<h2>Ceylon mode</h2>
<div><textarea id="ceylon-code">"Produces the [[stream|Iterable]] that results from repeated application of the given [[function|next]] to the given [[first]] element of the stream, until the function first returns [[finished]]. If the given function never returns `finished`, the resulting stream is infinite.
For example:
loop(0)(2.plus).takeWhile(10.largerThan)
produces the stream `{ 0, 2, 4, 6, 8 }`."tagged("Streams")shared {Element+} loop<Element>( "The first element of the resulting stream." Element first)( "The function that produces the next element of the stream, given the current element. The function may return [[finished]] to indicate the end of the stream." Element|Finished next(Element element)) => let (start = first) object satisfies {Element+} { first => start; empty => false; function nextElement(Element element) => next(element); iterator() => object satisfies Iterator<Element> { variable Element|Finished current = start; shared actual Element|Finished next() { if (!is Finished result = current) { current = nextElement(result); return result; } else { return finished; } } }; };</textarea></div>
<script> var cEditor = CodeMirror.fromTextArea(document.getElementById("c-code"), { lineNumbers: true, matchBrackets: true, mode: "text/x-csrc" }); var cppEditor = CodeMirror.fromTextArea(document.getElementById("cpp-code"), { lineNumbers: true, matchBrackets: true, mode: "text/x-c++src" }); var javaEditor = CodeMirror.fromTextArea(document.getElementById("java-code"), { lineNumbers: true, matchBrackets: true, mode: "text/x-java" }); var objectivecEditor = CodeMirror.fromTextArea(document.getElementById("objectivec-code"), { lineNumbers: true, matchBrackets: true, mode: "text/x-objectivec" }); var scalaEditor = CodeMirror.fromTextArea(document.getElementById("scala-code"), { lineNumbers: true, matchBrackets: true, mode: "text/x-scala" }); var kotlinEditor = CodeMirror.fromTextArea(document.getElementById("kotlin-code"), { lineNumbers: true, matchBrackets: true, mode: "text/x-kotlin" }); var ceylonEditor = CodeMirror.fromTextArea(document.getElementById("ceylon-code"), { lineNumbers: true, matchBrackets: true, mode: "text/x-ceylon" }); var mac = CodeMirror.keyMap.default == CodeMirror.keyMap.macDefault; CodeMirror.keyMap.default[(mac ? "Cmd" : "Ctrl") + "-Space"] = "autocomplete"; </script>
<p>Simple mode that tries to handle C-like languages as well as it can. Takes two configuration parameters: <code>keywords</code>, an object whose property names are the keywords in the language, and <code>useCPP</code>, which determines whether C preprocessor directives are recognized.</p>
<p><strong>MIME types defined:</strong> <code>text/x-csrc</code> (C), <code>text/x-c++src</code> (C++), <code>text/x-java</code> (Java), <code>text/x-csharp</code> (C#), <code>text/x-objectivec</code> (Objective-C), <code>text/x-scala</code> (Scala), <code>text/x-vertex</code> <code>x-shader/x-fragment</code> (shader programs), <code>text/x-squirrel</code> (Squirrel) and <code>text/x-ceylon</code> (Ceylon)</p></article>
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