NAME

Uil − Invokes the UIL compiler from within an application

SYNOPSIS

#include <uil/UilDef.h>

Uil_status_type Uil (command_desc, compile_desc, message_cb,
message_data, status_cb, status_data)

Uil_command_type*command_desc;
Uil_compile_desc_type*compile_desc;
Uil_continue_type(*message_cb) ();
char*message_data;
Uil_continue_type(*status_cb) ();
char*status_data;

DESCRIPTION

The Uil function provides a callable entry point for the UIL compiler. The Uil callable interface can be used to process a UIL source file and to generate UID files, as well as return a detailed description of the UIL source module in the form of a symbol table (parse tree). 

command_desc
Specifies the uil command line. 

compile_desc
Returns the results of the compilation.

message_cb
Specifies a callback function that is called when the compiler encounters errors in the UIL source.

message_data
Specifies user data that is passed to the message callback function (message_cb). Note that this argument is not interpreted by UIL, and is used exclusively by the calling application.

status_cb
Specifies a callback function that is called to allow X applications to service X events such as updating the screen.  This function is called at various check points, which have been hard coded into the UIL compiler. The status_update_delay argument in command_desc specifies the number of check points to be passed before the status_cb function is invoked.

status_data
Specifies user data that is passed to the status callback function (status_cb). Note that this argument is not interpreted by the UIL compiler, and is used exclusively by the calling application.

The data structures Uil_command_type and Uil_compile_desc_type are detailed below.  typedef struct Uil_command_type { char *source_file;
    /* single source to compile */ char *resource_file; /* name of output file */ char *listing_file; /* name of listing file */ unsigned int *include_dir_count;
    /* number of dirs. in include_dir */ char *((*include_dir) []);
    /* dir. to search for include files */ unsigned listing_file_flag: 1;
    /* produce a listing */ unsigned resource_file_flag: 1;
    /* generate UID output */ unsigned machine_code_flag: 1;
    /* generate machine code */ unsigned report_info_msg_flag: 1;
    /* report info messages */ unsigned report_warn_msg_flag: 1;
    /* report warnings */ unsigned parse_tree_flag: 1;
    /* generate parse tree */ unsigned int status_update_delay;
    /* number of times a status point is */
    /* passed before calling status_cb */
    /* function 0 means called every time */ char *database;
    /* name of database file */ unsigned database_flag: 1;
    /* read a new database file */ unsigned use_setlocale_flag: 1;
    /* enable calls to setlocale */ }; typedef struct Uil_compile_desc_type { unsigned int compiler_version;
    /* version number of compiler */ unsigned int data_version;
    /* version number of structures */ char *parse_tree_root; /* parse tree output */ unsigned int message_count [Uil_k_max_status+1]; /* array of severity counts */ };

Following is a description of the message callback function specified by message_cb:

Uil_continue_type (*message_cb) (message_data, message_number,
severity, msg_buffer, src_buffer, ptr_buffer, loc_buffer,
message_count)

char*message_data;
intmessage_number;
intseverity;
char*msg_buffer, *src_buffer;
char*ptr_buffer, *loc_buffer;
intmessage_count[];

Specifies a callback function that UIL invokes instead of printing an
error message when the compiler encounters an error in the UIL source.
The callback should return one of these values:

Uil_k_terminateTells UIL to terminate processing of the source file.

Uil_k_continueTells UIL to continue processing the source file.

Following are the arguments:

message_dataData supplied by the application as the message_data argument to
the Uil function.
UIL does not interpret this data in any way; it just passes it to the
callback.

message_numberAn index into a table of error messages and severities, for internal use
by UIL.

severityAn integer that indicates the severity of the error.
The possible values are the status constants returned by the Uil
function.
See the "RETURN VALUE" section below.

msg_bufferA string that describes the error.

src_bufferA string consisting of the source line where the error occurred.
This is not always available; the argument is then NULL.

ptr_bufferA string consisting of whitespace and a printing character in the
character position corresponding to the column of the source line where
the error occurred.
This string may be printed beneath the source line to provide a visual
indication of the column where the error occurred.
This is not always available; the argument is then NULL.

loc_bufferA string identifying the line number and file of the source line where
the error occurred.
This is not always available; the argument is then NULL.

message_countAn array of integers containing the number of diagnostic messages issued
thus far for each severity level.
To find the number of messages issued for the current severity level,
use the severity argument as the index into this array.

Following is a description of the status callback function specified by
status_cb:

Uil_continue_type (*status_cb) (status_data, percent_complete,
lines_processed, current_file, message_count)

char*status_data;
intpercent_complete;
intlines_processed;
char*current_file;
intmessage_count[];

Specifies a callback function that is invoked to allow X applications to
service X events such as updating the screen.
The callback should return one of these values:

Uil_k_terminateTells UIL to terminate processing of the source file.

Uil_k_continueTells UIL to continue processing the source file.

Following are the arguments:

status_dataData supplied by the application as the status_data argument to
the Uil function.
UIL does not interpret this data in any way; it just passes it to the
callback.

percent_completeAn integer indicating what percentage of the current source file has
been processed so far.

lines_processedAn integer indicating how many lines of the current source file have
been read so far.

current_fileA string containing the pathname of the current source file.

message_countAn array of integers containing the number of diagnostic messages issued
thus far for each severity level.
To find the number of messages issued for a given severity level, use
the severity level as the index into this array.
The possible severity levels
are the status constants returned by the
Uil function.
See the "RETURN VALUE" section below.

RETURN VALUE

This function returns one of these status return constants:

Uil_k_success_status
The operation succeeded.

Uil_k_info_status
The operation succeeded, and an informational message is returned.

Uil_k_warning_status
The operation succeeded, and a warning message is returned.

Uil_k_error_status
The operation failed due to an error.

Uil_k_severe_status
The operation failed due to an error.

RELATED INFORMATION

UilDumpSymbolTable(3X) and uil(1X). 

Hewlett-Packard Company  —  Motif Release 1.2: May 1992