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module demo::lang::Pico::UseDef

rascal-0.34.0

Usage​

import demo::lang::Pico::UseDef;

Dependencies​

import demo::lang::Pico::Abstract;

function usesExp​

set[Occurrence] usesExp(EXP e, STATEMENT s) =       ❶  
  u:id(PicoId Id1) := e ? {< u.src, Id1, s>}
                        : {< u.src, Id2, s> | /u:id(PicoId Id2) <- e };

function usesStat​

set[Occurrence] usesStat(s:asgStat(PicoId Id, EXP e)) = usesExp(e, s);

set[Occurrence] usesStat(s: ifElseStat(EXP e,
                              list[STATEMENT] s1,
                              list[STATEMENT] s2)) =
   usesExp(e, s) + usesStats(s1) + usesStats(s2);

set[Occurrence] usesStat(s: whileStat(EXP e,
                              list[STATEMENT] s1)) =
   usesExp(e, s) + usesStats(s1);

function usesStats​

set[Occurrence] usesStats(list[STATEMENT] stats) =  
   {*usesStat(s) | s <- stats};

function uses​

public set[Occurrence] uses(PROGRAM p) = usesStats(p.stats);

function defs​

public set[Occurrence] defs(PROGRAM p) =       ❹  
   { < stat.src, v, stat > | /stat:asgStat(PicoId v, EXP _) <- p.stats};