Uil(3) Library Functions Manual Uil(3) NAME Uil -- Invokes the UIL compiler from within an application SYNOPSIS #include <uil/UilDef.h> Uil_status_type Uil( 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 gen- erate 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_cbSpecifies 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 func- tion (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 applica- tions to service X events such as updating the screen. This func- tion 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 func- tion (status_cb). Note that this argument is not interpreted by the UIL compiler and is used exclusively by the calling applica- tion. Following are the data structures Uil_command_type and Uil_com- pile_desc_type: 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; int message_number; int severity; char *msg_buffer, *src_buffer; char *ptr_buffer, *loc_buffer; int message_count[]; This function 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 the following values: Uil_k_terminate Terminate processing of the source file Uil_k_continue Continue processing the source file The arguments are message_data Data 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_number An index into a table of error messages and severities for inter- nal use by UIL. severity An integer that indicates the severity of the error. The possi- ble values are the status constants returned by the Uil function. See Return Value for more information. msg_bufferA string that describes the error. src_bufferA string consisting of the source line where the error occurred. This string is not always available. In this case, the argument is 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 string is not always available. In this case, the argument is NULL. loc_bufferA string identifying the line number and file of the source line where the error occurred. This is not always available; the ar- gument is then NULL. message_count An 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; int percent_complete; int lines_processed; char *current_file; int message_count[]; This function specifies a callback function that is invoked to allow X ap- plications to service X events such as updating the screen. The callback should return one of the following values: Uil_k_terminate Terminate processing of the source file Uil_k_continue Continue processing the source file The arguments are status_data Data 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_complete An integer indicating what percentage of the current source file has been processed so far. lines_processed An integer indicating how many lines of the current source file have been read so far. current_file A string containing the pathname of the current source file. message_count An 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 Re- turn Value for more information. RETURN This function returns one of the following status return constants: Uil_k_success_status The operation succeeded. Uil_k_info_status The operation succeeded. An informational message is returned. Uil_k_warning_status The operation succeeded. 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 UilDumpSymbolTable(3) and uil(1). Uil(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN | RELATED
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