/*
 * NAME
 *      bison - how to use bison
 *
 * DESCRIPTION
 *      This cookbook describes how to use bison.
 *
 *      You will have to add "-d" to the [bison_flags] variable
 *      if you want %.h files generated.
 *
 *      If a y.output file is constructed, it will be moved to %.list
 *
 * RECIPES
 *      %.c %.h: %.y    applied if -d in [bison_flags]
 *      %.c: %.y        applied if -d not in [bison_flags]
 *
 * VARIABLES
 *      bison_src       bison source files in the current directory.
 *      dot_src         Source files constructable in the current directory
 *                      (unioned with existing setting, if necessary).
 *      dot_obj         Object files constructable in the current directory
 *                      (unioned with existing setting, if necessary).
 *      dot_clean       Files which may be removed from the current directory
 *                      in a clean target.
 *      dot_lint_obj    Lint object files constructable in the current directory
 *                      (unioned with existing setting, if necessary).
 *
 * MANIFEST: cookbook for using bison
 * Copyright (C) 1997-2007 Peter Miller
 */

#pragma once

#include "c"

if [not [defined bison]] then
        bison = bison;
if [not [defined bison_flags]] then
        bison_flags = ;
bison_src = [glob *.y];
cc_src = [stringset [cc_src] - [fromto %.y %.c [bison_src]]];
dot_src =
        [stringset
                [dot_src] [bison_src]
        -
                [fromto %.y %.c [bison_src]] [fromto %.y %.s [bison_src]]
        ];
dot_obj = [stringset [dot_obj] [fromto %.y %.o [bison_src]]];
dot_clean =
        [stringset
                [dot_clean]
                [fromto %.y %.c [bison_src]]
                [fromto %.y %.output [bison_src]]
                [fromto %.y %.tab.c [bison_src]]
                [fromto %.y %.tab.h [bison_src]]
                [fromto %.y %.ln [bison_src]]
                [fromto %.y %.s [bison_src]]
        ];
dot_lint_obj = [stringset [dot_lint_obj] [fromto %.y %.ln [bison_src]]];

%.c %.h: %.y
        if [in -d [bison_flags]]
        single-thread %.tab.c %.tab.h %.output
{
        if [exists %.output] then
                rm -f %.output
                        set clearstat;
        [bison] [bison_flags] %.y;
        mv %.tab.c %.c;
        mv %.tab.h %.h;
}

%.c: %.y
        if [not [in -d [bison_flags]]]
        single-thread %.tab.c %.output
{
        if [exists %.output] then
                rm -f %.output
                        set clearstat;
        [bison] [bison_flags] %.y;
        mv %.tab.c %.c;
}