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<TITLE>erl_id_trans</TITLE>
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<H1>erl_id_trans</H1>
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<H3>MODULE</H3>
<UL>
erl_id_trans</UL>
<H3>MODULE SUMMARY</H3>
<UL>
An Identity Parse Transform</UL>
<H3>DESCRIPTION</H3>
<UL>
<P>This module performs an identity parse transformation of Erlang code.
It is included as an example for users who may wish to write their own
parse transformers. If the option <CODE>{parse_transform,Module}</CODE> is passed
to the compiler, a user written function <CODE>parse_transform/2</CODE>
is called by the compiler before the code is checked for
errors.
</UL>
<H3>EXPORTS</H3>
<P><A NAME="parse_transform%2"><STRONG><CODE>parse_transform(Forms, Options) -> Forms</CODE></STRONG></A><BR>
<P><UL>Types:
<UL>
<STRONG><CODE>Forms = [erlang_form()]</CODE></STRONG><BR>
<STRONG><CODE>Options = [compiler_options()]</CODE></STRONG><BR>
</UL>
</UL>
<UL>
<P>Performs an identity transformation on Erlang forms, as an example.
</UL>
<H3>Parse Transformations</H3>
<UL>
<P>Parse transformations are used if a programmer wants to use
Erlang syntax, but with different semantics. The original Erlang
code is then transformed into other Erlang code.
<P><TABLE CELLPADDING=4>
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<TD VALIGN=TOP><IMG ALT="Note!" SRC="note.gif"></TD>
<TD>
<P>Programmers are strongly advised not to engage in parse transformations and no support is offered for problems encountered.</TD>
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</TABLE>
</UL>
<H3>See Also</H3>
<UL>
<P> <A HREF="erl_parse.html">erl_parse</A> compile.
</UL>
<H3>AUTHORS</H3>
<UL>
Robert Virding - support@erlang.ericsson.se<BR>
</UL>
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<FONT SIZE=-1>stdlib 1.10<BR>
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