%{

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdarg.h>
#include <limits.h>
#include <locale.h>
#include <wchar.h>
#include <wctype.h>

#include <defs.h>

#include <main.h>
#include <error.h>
#include <msglog.h>
#include <xalloc.h>
#include <utf8ing.h>
#include <symtab.h>
#include <parse.h>
#include <lex.h>


%}


%union
{
  SYMBOL *sym;
}

%token <sym>  VARIABLE 501 SECTION 502 REPO 503
%token <sym>  NUMERICAL 510 STRING 511 PATH 512
%right '='
%left UNARYMINUS
/************************************************************
  Following tokens declared only for verbose error messaging
  to prevent "$undefined" values of unexpected symbols:
 */
%token '!' '"' '#' '$' '%' '&' '\'' '(' ')' '*' '/' '+' '-'
%token '.' ',' ':' '<' '>' '?' '@' '[' '\\' ']' '^' '`'

%start list

%%
list:    /* nothing */
       | list ';'
       | list repo
       | list section
       | list assign ';'
       | list error  ';' { return 1; }
       ;

assign:  VARIABLE '=' NUMERICAL  { (void)assign_value( $1, $3 ); }
       | VARIABLE '=' '+' NUMERICAL { (void)assign_value( $1, $4 ); }
       | VARIABLE '=' '-' NUMERICAL %prec UNARYMINUS { $4->u.value = -$4->u.value; (void)assign_value( $1, $4 ); }
       | VARIABLE '=' STRING     { (void)assign_value( $1, $3 ); }
       | VARIABLE '=' PATH       { (void)assign_value( $1, $3 ); }
       | NUMERICAL '=' NUMERICAL { (void)assign_value( $1, $3 ); }
       | STRING '=' STRING       { (void)assign_value( $1, $3 ); }
       | PATH '=' PATH           { (void)assign_value( $1, $3 ); }
       ;

alist:   /* nothing */
       | alist ';'
       | alist assign ';'
       ;

repo:    REPO PATH '{'
           {
             if( lookup_repo( $2->u.path ) )
             {
               error( "Repository '%s' is already defined", $2->u.path );
               return 1;
             }
             (void)assign_value( $1, $2 ); push_symlist( (SYMBOL **)&($1->list) );
           }
           alist
         '}' { pop_symlist(); }
       ;

rlist:   /* nothing */
       | rlist repo
       ;

section:
         SECTION STRING '{'
           {
             if( lookup_section( $2->u.string ) )
             {
               error( "Section '%s' is already defined", $2->u.string );
               return 1;
             }
             (void)assign_value( $1, $2 ); push_symlist( (SYMBOL **)&($1->list) );
           }
           rlist
         '}' { pop_symlist(); }
       ;

%%