[ceylon-dev] Ceylon compilation process (JVM)

[Tharindu Ranathunga]

Hi,

I'm new to Ceylon and I wanted to study the compilation and run time
behavior of Ceylon.Can some one explain me whats really a ".car" file is
and how it converted into a class file
in order to run it in JVM ?

Thanks

[Bastien Jansen]

Hi,

CAR stands for "Ceylon ARchive", it is exactly like a JAR file, except it
was produced by the Ceylon compiler instead of the Java compiler. Like a
JAR file, it's basically a zip file containing folders and .class files,
and also a few metadata files that describe the Ceylon module contained in
the archive.

To run the module on the JVM, you can either use the `ceylon run` command,
or add the CAR file to the classpath of an application like any regular JAR
file (although you won't be able to use it as a Ceylon module this way,
just as regular compiled classes).

Post by Tharindu Ranathunga
Hi,
I'm new to Ceylon and I wanted to study the compilation and run time
behavior of Ceylon.Can some one explain me whats really a ".car" file is
and how it converted into a class file
in order to run it in JVM ?
Thanks

[Tharindu Ranathunga]

Hi,
So is it possible to run these compiled Ceylon modules from Java as well ?

Post by Bastien Jansen
Hi,
CAR stands for "Ceylon ARchive", it is exactly like a JAR file, except it
was produced by the Ceylon compiler instead of the Java compiler. Like a
JAR file, it's basically a zip file containing folders and .class files,
and also a few metadata files that describe the Ceylon module contained in
the archive.
To run the module on the JVM, you can either use the `ceylon run` command,
or add the CAR file to the classpath of an application like any regular JAR
file (although you won't be able to use it as a Ceylon module this way,
just as regular compiled classes).

Post by Tharindu Ranathunga
Hi,
I'm new to Ceylon and I wanted to study the compilation and run time
behavior of Ceylon.Can some one explain me whats really a ".car" file is
and how it converted into a class file
in order to run it in JVM ?
Thanks

[John Vasileff]

If you need to load Ceylon modules from Java code, you can use the the tool provider api - http://ceylon-lang.org/documentation/1.2/reference/interoperability/ceylon-on-jvm/#using_the_ceylontoolprovider_api <http://ceylon-lang.org/documentation/1.2/reference/interoperability/ceylon-on-jvm/#using_the_ceylontoolprovider_api>

A real-world example is the WarInitializer, allowing you to run Ceylon modules within a servlet container - https://github.com/ceylon/ceylon-sdk/blob/version-1.2.2/source/com/redhat/ceylon/war/WarInitializer.java <https://github.com/ceylon/ceylon-sdk/blob/version-1.2.2/source/com/redhat/ceylon/war/WarInitializer.java>. (To automatically package wars, see 'ceylon war --help’)

I believe Ceylon 1.2.3 (yet to be released) will have additional options, but someone else will have to elaborate on that.

John

Post by Tharindu Ranathunga
Hi,
So is it possible to run these compiled Ceylon modules from Java as well ?
Hi,
CAR stands for "Ceylon ARchive", it is exactly like a JAR file, except it was produced by the Ceylon compiler instead of the Java compiler. Like a JAR file, it's basically a zip file containing folders and .class files, and also a few metadata files that describe the Ceylon module contained in the archive.
To run the module on the JVM, you can either use the `ceylon run` command, or add the CAR file to the classpath of an application like any regular JAR file (although you won't be able to use it as a Ceylon module this way, just as regular compiled classes).
Hi,
I'm new to Ceylon and I wanted to study the compilation and run time behavior of Ceylon.Can some one explain me whats really a ".car" file is and how it converted into a class file
in order to run it in JVM ?
Thanks
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