diff options
Diffstat (limited to 'psi/iminst.h')
| -rw-r--r-- | psi/iminst.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/psi/iminst.h b/psi/iminst.h new file mode 100644 index 000000000..1e8012330 --- /dev/null +++ b/psi/iminst.h @@ -0,0 +1,94 @@ +/* Copyright (C) 2001-2012 Artifex Software, Inc. + All Rights Reserved. + + This software is provided AS-IS with no warranty, either express or + implied. + + This software is distributed under license and may not be copied, + modified or distributed except as expressly authorized under the terms + of the license contained in the file LICENSE in this distribution. + + Refer to licensing information at http://www.artifex.com or contact + Artifex Software, Inc., 7 Mt. Lassen Drive - Suite A-134, San Rafael, + CA 94903, U.S.A., +1(415)492-9861, for further information. +*/ + + +/* Definition of interpreter instance */ +/* Requires stdio_.h, gsmemory.h, iref.h, iapi.h */ + +#ifndef iminst_INCLUDED +# define iminst_INCLUDED + +#ifndef gs_main_instance_DEFINED +# define gs_main_instance_DEFINED +typedef struct gs_main_instance_s gs_main_instance; +#endif + +/* + * Define the structure of a search path. Currently there is only one, + * but there might be more someday. + * + * container - an array large enough to hold the specified maximum + * number of directories. Both the array and all the strings in it are + * in the 'foreign' VM space. + * list - the initial interval of container that defines the actual + * search list. + * env - the contents of an environment variable, implicitly added + * at the end of the list; may be 0. + * final - the final set of directories specified in the makefile; + * may be 0. + * count - the number of elements in the list, excluding a possible + * initial '.', env, and final. + */ +typedef struct gs_file_path_s { + ref container; + ref list; + const char *env; + const char *final; + uint count; +} gs_file_path; + +/* + * Here is where we actually define the structure of interpreter instances. + * Clients should not reference any of the members. Note that in order to + * be able to initialize this structure statically, members including + * unions must come last (and be initialized to 0 by default). + */ +struct gs_main_instance_s { + /* The following are set during initialization. */ + gs_memory_t *heap; /* (C) heap allocator */ + uint memory_chunk_size; /* 'wholesale' allocation unit */ + ulong name_table_size; + uint run_buffer_size; + int init_done; /* highest init done so far */ + int user_errors; /* define what to do with errors */ + bool search_here_first; /* if true, make '.' first lib dir */ + bool run_start; /* if true, run 'start' after */ + /* processing command line */ + gs_file_path lib_path; /* library search list (GS_LIB) */ + long base_time[2]; /* starting usertime */ + void *readline_data; /* data for gp_readline */ + ref error_object; /* Use by gsapi_*() */ + int (*get_codepoint)(FILE *file, const char **astr); + /* Get next 'unicode' codepoint (in + * GS_NO_UTF8 builds, these will actually + * just be 8 bit clean values). */ + display_callback *display; /* callback structure for display device */ + /* The following are updated dynamically. */ + i_ctx_t *i_ctx_p; /* current interpreter context state */ + char *saved_pages_initial_arg; /* used to defer processing of --saved-pages=begin... */ + bool saved_pages_test_mode; /* for regression testing of saved-pages */ +}; + +/* + * Note that any file that uses the following definition of default values + * must include gconfig.h, because of SEARCH_HERE_FIRST. + */ +#define gs_main_instance_default_init_values\ + 0/* heap */, 20000/* chunk_size */, 0/* name_table_size */, 0/* run_buffer_size */,\ + -1/* init_done */, 0/* user_errors */, SEARCH_HERE_FIRST/* duh */, 1/* run_start */, + +extern const gs_main_instance gs_main_instance_init_values; + +#endif /* iminst_INCLUDED */ |