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Result status codes
===================
This project adopts widely used convention of returning integer encoded status
codes as function results.
Each function, that needs to notify it's execution status (success or error),
returns ``lsp_status_t`` (alias for ``lsp_int8_t``).
Available status codes are:
* ``LSP_SUCCESS``
Execution successful.
* ``LSP_EOF``
End of file encountered during reading/writing.
* ``LSP_ERR``
Generic error (unknown error).
* ``LSP_ERR_MEM``
Memory error (usually out of memory).
* ``LSP_ERR_CTX``
Context error (usually symbol resolution error).
* ``LSP_ERR_READ``
Reader error.
* ``LSP_ERR_WRITE``
Writer error.
* ``LSP_ERR_EVAL``
Evaluation error.
* ``LSP_ERR_APPLY``
Application error.
* ``LSP_ERR_ARG_COUNT``
Invalid argument count.
* ``LSP_ERR_ARG_TYPE``
Invalid argument type.
* ``LSP_ERR_ARG_VALUE``
Invalid argument value.
* ``LSP_ERR_USER``
Special status value representing beginning of user status codes.
User has ability to raise user error with ``error`` builtin function. This
error is additionally described with integer value in range [0, 126] and
encoded as status code.
Source code
-----------
status.h
''''''''
.. literalinclude:: ../src_c/status.h
:language: c
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