Making my first compiler

szigetir@gmail.com
16 Sep 2006 15:58:17 -0400

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From: szigetir@gmail.com
Newsgroups: comp.compilers
Date: 16 Sep 2006 15:58:17 -0400
Organization: Compilers Central
Keywords: question
Posted-Date: 16 Sep 2006 15:58:17 EDT

Hi,


I'm trying to create a pascal subset interpreter/compiler.


Do I HAVE to create a syntax tree? Or can I go straight to creating
Intermediate Code (Quadruples) in Yacc's reduce actions?


Say I have a generic paramater_list (for function definitions) in BNF ,
eg:


paramater_list: paramater_list paramater


In Yacc, would this be connected together as a linked-list?
paramater_list: paramater_list paramater { $$ = make_paramater($2);
$$->next = $1; }
| paramater { $$ = make_paramater($1); }
;


What's a basic structure for a syntax tree in C?


Say I want my compiler to convert Pascal code to C code, which steps
are absolutely necessary to do this correctly?
Im thinking:
Build Syntax Tree -> Convert it to Three Address Code (Quadruples) ->
then into C
Was this correct?


thanks


Roland


szigetir@gmail.com


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