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add Readme to kotlin-stdlib-gen explaining how to run code generation

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Jon Renner
2013-12-27 15:06:19 +08:00
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libraries/tools/kotlin-stdlib-gen/ReadMe.md
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## Code Generation for Standard Library
Some of the code in the standard library is created by code generation based on templates.
For example, many Array methods need to be implemented separately for Array<T>, ByteArray, ShortArray, IntArray, etc.
To run the code generator from a kotlin checkout
cd libraries/tools/kotlin-stdlib-gen
mvn compile exec:java
This then runs the [GenerateStandardLib.kt](https://github.com/JetBrains/kotlin/blob/master/libraries/tools/kotlin-stdlib-gen/src/generators/GenerateStandardLib.kt) script to create the source from the files for java.lang.Iterable<T> and java.util.Collection etc.