eyapp-debugging-tutorial/DebugDynamicResolution4.eyp at master · ULL-ESIT-PL/eyapp-debugging-tutorial · GitHub

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%{
=head1 SYNOPSIS

See http://search.cpan.org/perldoc?Parse::Eyapp::debuggingtut
This file solves the conflict in Debug.eyp using dynamic
conflict resolution techniques
(see section 'SOLVING CONFLICTS WITH THE POSTPONED CONFLICT STRATEGY' in
http://search.cpan.org/perldoc?Parse::Eyapp::debuggingtut)

Compile it with

      $ eyapp -C DebugDynamicResolution4.eyp
      $ eyapp -P lastD.eyp

Execute the generated modulino with:

       $ ./DebugDynamicResolution4.pm -t -i -m 1 -c 'D;D;D;S;S'


=head1 See also

    Debug.eyp Debug1.eyp Debug2.eyp DebugLookForward.eyp

=cut

%}

%token D S

%conflict LD lastD? D:LAST : shift

%tree

%%
p:
    %name PROG
    ds ';' ss
  | %name SS
    ss
;

ds:
    %name D
    D                    %PREC LD
      ';' ds
  | %name D:LAST
    D                    %PREC LD
;

ss:
    %name SS
    S ';' ss
  | %name S
    S
;

%%