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.. |title| replace:: The PyPy Translation
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**Objectives**

Analysis and translation of the PyPy core (WP04_) into
efficient low-level code (C, Pyrex, Java, others). 
Providing a Runtime Library for the translated versions
of PyPy.

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**Description of work**

**Task 1**

Create a code analysis tool for a subset of the Python
language (RPython). Coordinate the definition of RPython
with WP04_, being the implementation language of the core.

**Task 2**

Produce a tool chain, capable of extracting the RPython
byte code from the core, translating it into low-level
code (C, ...), and compiling it.
Use the data gathered in Task 1 to drive the translation
process.

**Task 3**

In order to give a working environment to the translated RPython
program, build the low-level-specific runtime components of PyPy.
For the C PyPy runtime, important parts can be directly re-used from CPython.

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**Deliverables**

- D05.1 Tool chain for translating and compiling arbitrary RPython programs
- D05.2 A compiled, self-contained version of PyPy

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**Milestones and Expected Result**

- Complete implementation of Python, conforming to the language
  definition and passing all relevant[*]_ tests of the official Python test suite.

.. [*] CPython contains some tests that depend on implementation
   details. The exact line between a language feature and an implementation detail
   might at times be hard to draw precisely, but in all cases this only concerns a
   minorily of the tests (less than 10%).

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