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Diffstat (limited to 'jam-files/engine/frames.h')
| -rw-r--r-- | jam-files/engine/frames.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/jam-files/engine/frames.h b/jam-files/engine/frames.h new file mode 100644 index 00000000..693d77fa --- /dev/null +++ b/jam-files/engine/frames.h @@ -0,0 +1,37 @@ +/* + * Copyright 2001-2004 David Abrahams. + * Distributed under the Boost Software License, Version 1.0. + * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) + */ +#ifndef FRAMES_DWA20011021_H +#define FRAMES_DWA20011021_H + +#include "lists.h" +#include "modules.h" + +typedef struct _PARSE PARSE; +typedef struct frame FRAME; + +struct frame +{ + FRAME * prev; + /* The nearest enclosing frame for which module->user_module is true. */ + FRAME * prev_user; + LOL args[ 1 ]; + module_t * module; + PARSE * procedure; + char * rulename; +}; + + +/* When call into Python is in progress, this variable points to the bjam frame + * that was current at the moment of call. When the call completes, the variable + * is not defined. Further, if Jam calls Python which calls Jam and so on, this + * variable only keeps the most recent Jam frame. + */ +extern struct frame * frame_before_python_call; + +void frame_init( FRAME * ); /* implemented in compile.c */ +void frame_free( FRAME * ); /* implemented in compile.c */ + +#endif |