mirror of
https://github.com/ganelson/inform.git
synced 2024-07-03 07:24:58 +03:00
493 lines
17 KiB
C
Executable file
493 lines
17 KiB
C
Executable file
/* ------------------------------------------------------------------------- */
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/* "errors" : Warnings, errors and fatal errors */
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/* (with error throwback code for RISC OS machines) */
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/* */
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/* Part of Inform 6.34 */
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/* copyright (c) Graham Nelson 1993 - 2020 */
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/* */
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/* ------------------------------------------------------------------------- */
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#include "header.h"
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#define ERROR_BUFLEN (256)
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static char error_message_buff[ERROR_BUFLEN+4]; /* room for ellipsis */
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/* ------------------------------------------------------------------------- */
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/* Error preamble printing. */
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/* ------------------------------------------------------------------------- */
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ErrorPosition ErrorReport; /* Maintained by "lexer.c" */
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static void print_preamble(void)
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{
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/* Only really prints the preamble to an error or warning message:
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e.g. "jigsaw.apollo", line 24:
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The format is controllable (from an ICL switch) since this assists
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the working of some development environments. */
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int j, with_extension_flag = FALSE; char *p;
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j = ErrorReport.file_number;
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if (j <= 0 || j > total_files) p = ErrorReport.source;
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else p = InputFiles[j-1].filename;
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if (!p) p = "";
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switch(error_format)
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{
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case 0: /* RISC OS error message format */
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if (!(ErrorReport.main_flag)) printf("\"%s\", ", p);
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printf("line %d: ", ErrorReport.line_number);
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if (ErrorReport.orig_file) {
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char *op;
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if (ErrorReport.orig_file <= 0 || ErrorReport.orig_file > total_files)
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op = ErrorReport.orig_source;
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else
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op = InputFiles[ErrorReport.orig_file-1].filename;
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printf("(\"%s\"", op);
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if (ErrorReport.orig_line) {
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printf(", %d", ErrorReport.orig_line);
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if (ErrorReport.orig_char) {
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printf(":%d", ErrorReport.orig_char);
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}
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}
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printf("): ");
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}
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break;
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case 1: /* Microsoft error message format */
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for (j=0; p[j]!=0; j++)
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{ if (p[j] == FN_SEP) with_extension_flag = TRUE;
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if (p[j] == '.') with_extension_flag = FALSE;
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}
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printf("%s", p);
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if (with_extension_flag) printf("%s", Source_Extension);
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printf("(%d): ", ErrorReport.line_number);
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break;
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case 2: /* Macintosh Programmer's Workshop error message format */
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printf("File \"%s\"; Line %d\t# ", p, ErrorReport.line_number);
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break;
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}
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}
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static void ellipsize_error_message_buff(void)
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{
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/* If the error buffer was actually filled up by a message, it was
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probably truncated too. Add an ellipsis, for which we left
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extra room. (Yes, yes; errors that are *exactly* 255 characters
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long will suffer an unnecessary ellipsis.) */
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if (strlen(error_message_buff) == ERROR_BUFLEN-1)
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strcat(error_message_buff, "...");
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}
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/* ------------------------------------------------------------------------- */
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/* Fatal errors (which have style 0) */
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/* ------------------------------------------------------------------------- */
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extern void fatalerror(char *s)
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{ print_preamble();
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printf("Fatal error: %s\n",s);
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if (no_compiler_errors > 0) print_sorry_message();
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#ifdef ARC_THROWBACK
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throwback(0, s);
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throwback_end();
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#endif
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#ifdef MAC_FACE
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close_all_source();
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if (temporary_files_switch) remove_temp_files();
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abort_transcript_file();
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free_arrays();
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if (store_the_text)
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my_free(&all_text,"transcription text");
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longjmp(g_fallback, 1);
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#endif
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exit(1);
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}
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extern void fatalerror_named(char *m, char *fn)
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{ snprintf(error_message_buff, ERROR_BUFLEN, "%s \"%s\"", m, fn);
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ellipsize_error_message_buff();
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fatalerror(error_message_buff);
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}
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extern void memory_out_error(int32 size, int32 howmany, char *name)
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{ if (howmany == 1)
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snprintf(error_message_buff, ERROR_BUFLEN,
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"Run out of memory allocating %d bytes for %s", size, name);
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else
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snprintf(error_message_buff, ERROR_BUFLEN,
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"Run out of memory allocating array of %dx%d bytes for %s",
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howmany, size, name);
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ellipsize_error_message_buff();
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fatalerror(error_message_buff);
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}
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extern void memoryerror(char *s, int32 size)
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{
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snprintf(error_message_buff, ERROR_BUFLEN,
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"The memory setting %s (which is %ld at present) has been \
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exceeded. Try running Inform again with $%s=<some-larger-number> on the \
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command line.",s,(long int) size,s);
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ellipsize_error_message_buff();
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fatalerror(error_message_buff);
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}
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/* ------------------------------------------------------------------------- */
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/* Survivable diagnostics: */
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/* compilation errors style 1 */
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/* warnings style 2 */
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/* linkage errors style 3 */
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/* compiler errors style 4 (these should never happen and */
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/* indicate a bug in Inform) */
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/* ------------------------------------------------------------------------- */
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static int errors[MAX_ERRORS];
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int no_errors, no_warnings, no_suppressed_warnings, no_link_errors,
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no_compiler_errors;
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char *forerrors_buff;
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int forerrors_pointer;
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static void message(int style, char *s)
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{ int throw_style = style;
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if (hash_printed_since_newline) printf("\n");
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hash_printed_since_newline = FALSE;
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print_preamble();
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switch(style)
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{ case 1: printf("Error: "); no_errors++; break;
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case 2: printf("Warning: "); no_warnings++; break;
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case 3: printf("Error: [linking '%s'] ", current_module_filename);
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no_link_errors++; no_errors++; throw_style=1; break;
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case 4: printf("*** Compiler error: ");
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no_compiler_errors++; throw_style=1; break;
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}
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printf(" %s\n", s);
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#ifdef ARC_THROWBACK
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throwback(throw_style, s);
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#endif
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#ifdef MAC_FACE
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ProcessEvents (&g_proc);
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if (g_proc != true)
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{ free_arrays();
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if (store_the_text)
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my_free(&all_text,"transcription text");
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close_all_source ();
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if (temporary_files_switch) remove_temp_files();
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abort_transcript_file();
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longjmp (g_fallback, 1);
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}
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#endif
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if ((!concise_switch) && (forerrors_pointer > 0) && (style <= 2))
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{ forerrors_buff[forerrors_pointer] = 0;
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sprintf(forerrors_buff+68," ...etc");
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printf("> %s\n",forerrors_buff);
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}
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}
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/* ------------------------------------------------------------------------- */
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/* Style 1: Error message routines */
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/* ------------------------------------------------------------------------- */
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extern void error(char *s)
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{ if (no_errors == MAX_ERRORS)
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fatalerror("Too many errors: giving up");
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errors[no_errors] = no_syntax_lines;
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message(1,s);
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}
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extern void error_named(char *s1, char *s2)
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{ snprintf(error_message_buff, ERROR_BUFLEN,"%s \"%s\"",s1,s2);
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ellipsize_error_message_buff();
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error(error_message_buff);
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}
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extern void error_numbered(char *s1, int val)
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{
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snprintf(error_message_buff, ERROR_BUFLEN,"%s %d.",s1,val);
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ellipsize_error_message_buff();
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error(error_message_buff);
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}
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extern void error_named_at(char *s1, char *s2, brief_location report_line)
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{ int i;
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ErrorPosition E = ErrorReport;
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export_brief_location(report_line, &ErrorReport);
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snprintf(error_message_buff, ERROR_BUFLEN,"%s \"%s\"",s1,s2);
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ellipsize_error_message_buff();
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i = concise_switch; concise_switch = TRUE;
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error(error_message_buff);
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ErrorReport = E; concise_switch = i;
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}
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extern void no_such_label(char *lname)
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{ error_named("No such label as",lname);
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}
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extern void ebf_error(char *s1, char *s2)
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{ snprintf(error_message_buff, ERROR_BUFLEN, "Expected %s but found %s", s1, s2);
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ellipsize_error_message_buff();
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error(error_message_buff);
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}
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extern void char_error(char *s, int ch)
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{ int32 uni;
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uni = iso_to_unicode(ch);
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if (character_set_unicode)
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snprintf(error_message_buff, ERROR_BUFLEN, "%s (unicode) $%04x", s, uni);
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else if (uni >= 0x100)
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{ snprintf(error_message_buff, ERROR_BUFLEN,
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"%s (unicode) $%04x = (ISO %s) $%02x", s, uni,
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name_of_iso_set(character_set_setting), ch);
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}
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else
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snprintf(error_message_buff, ERROR_BUFLEN, "%s (ISO Latin1) $%02x", s, uni);
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/* If the character set is set to Latin-1, and the char in question
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is a printable Latin-1 character, we print it in the error message.
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This conflates the source-text charset with the terminal charset,
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really, but it's not a big deal. */
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if (((uni>=32) && (uni<127))
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|| (((uni >= 0xa1) && (uni <= 0xff))
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&& (character_set_setting==1) && (!character_set_unicode)))
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{ int curlen = strlen(error_message_buff);
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snprintf(error_message_buff+curlen, ERROR_BUFLEN-curlen,
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", i.e., '%c'", uni);
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}
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ellipsize_error_message_buff();
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error(error_message_buff);
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}
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extern void unicode_char_error(char *s, int32 uni)
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{
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if (uni >= 0x100)
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snprintf(error_message_buff, ERROR_BUFLEN, "%s (unicode) $%04x", s, uni);
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else
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snprintf(error_message_buff, ERROR_BUFLEN, "%s (ISO Latin1) $%02x", s, uni);
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/* See comment above. */
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if (((uni>=32) && (uni<127))
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|| (((uni >= 0xa1) && (uni <= 0xff))
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&& (character_set_setting==1) && (!character_set_unicode)))
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{ int curlen = strlen(error_message_buff);
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snprintf(error_message_buff+curlen, ERROR_BUFLEN-curlen,
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", i.e., '%c'", uni);
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}
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ellipsize_error_message_buff();
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error(error_message_buff);
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}
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/* ------------------------------------------------------------------------- */
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/* Style 2: Warning message routines */
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/* ------------------------------------------------------------------------- */
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extern void warning(char *s1)
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{ if (nowarnings_switch) { no_suppressed_warnings++; return; }
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message(2,s1);
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}
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extern void warning_numbered(char *s1, int val)
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{ if (nowarnings_switch) { no_suppressed_warnings++; return; }
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snprintf(error_message_buff, ERROR_BUFLEN,"%s %d.", s1, val);
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ellipsize_error_message_buff();
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message(2,error_message_buff);
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}
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extern void warning_named(char *s1, char *s2)
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{
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if (nowarnings_switch) { no_suppressed_warnings++; return; }
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snprintf(error_message_buff, ERROR_BUFLEN,"%s \"%s\"", s1, s2);
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ellipsize_error_message_buff();
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message(2,error_message_buff);
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}
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extern void dbnu_warning(char *type, char *name, brief_location report_line)
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{ int i;
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ErrorPosition E = ErrorReport;
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if (nowarnings_switch) { no_suppressed_warnings++; return; }
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export_brief_location(report_line, &ErrorReport);
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snprintf(error_message_buff, ERROR_BUFLEN, "%s \"%s\" declared but not used", type, name);
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ellipsize_error_message_buff();
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i = concise_switch; concise_switch = TRUE;
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message(2,error_message_buff);
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concise_switch = i;
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ErrorReport = E;
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}
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extern void uncalled_routine_warning(char *type, char *name, brief_location report_line)
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{ int i;
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/* This is called for functions which have been detected by the
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track-unused-routines module. These will often (but not always)
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be also caught by dbnu_warning(), which tracks symbols rather
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than routine addresses. */
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ErrorPosition E = ErrorReport;
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if (nowarnings_switch) { no_suppressed_warnings++; return; }
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export_brief_location(report_line, &ErrorReport);
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if (OMIT_UNUSED_ROUTINES)
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snprintf(error_message_buff, ERROR_BUFLEN, "%s \"%s\" unused and omitted", type, name);
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else
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snprintf(error_message_buff, ERROR_BUFLEN, "%s \"%s\" unused (not omitted)", type, name);
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ellipsize_error_message_buff();
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i = concise_switch; concise_switch = TRUE;
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message(2,error_message_buff);
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concise_switch = i;
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ErrorReport = E;
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}
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extern void obsolete_warning(char *s1)
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{ if (is_systemfile()==1) return;
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if (obsolete_switch || nowarnings_switch)
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{ no_suppressed_warnings++; return; }
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snprintf(error_message_buff, ERROR_BUFLEN, "Obsolete usage: %s",s1);
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ellipsize_error_message_buff();
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message(2,error_message_buff);
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}
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/* ------------------------------------------------------------------------- */
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/* Style 3: Link error message routines */
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/* ------------------------------------------------------------------------- */
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extern void link_error(char *s)
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{ if (no_errors==MAX_ERRORS) fatalerror("Too many errors: giving up");
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errors[no_errors] = no_syntax_lines;
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message(3,s);
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}
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extern void link_error_named(char *s1, char *s2)
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{ snprintf(error_message_buff, ERROR_BUFLEN,"%s \"%s\"",s1,s2);
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ellipsize_error_message_buff();
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link_error(error_message_buff);
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}
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/* ------------------------------------------------------------------------- */
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/* Style 4: Compiler error message routines */
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/* ------------------------------------------------------------------------- */
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extern void print_sorry_message(void)
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{ printf(
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"***********************************************************************\n\
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* 'Compiler errors' should never occur if Inform is working properly. *\n\
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* This is version %d.%02d of Inform, dated %20s: so *\n\
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* if that was more than six months ago, there may be a more recent *\n\
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* version available, from which the problem may have been removed. *\n\
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* If not, please report this fault to: graham@gnelson.demon.co.uk *\n\
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* and if at all possible, please include your source code, as faults *\n\
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* such as these are rare and often difficult to reproduce. Sorry. *\n\
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***********************************************************************\n",
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(RELEASE_NUMBER/100)%10, RELEASE_NUMBER%100, RELEASE_DATE);
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}
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extern int compiler_error(char *s)
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{ if (no_link_errors > 0) return FALSE;
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if (no_errors > 0) return FALSE;
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if (no_compiler_errors==MAX_ERRORS)
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fatalerror("Too many compiler errors: giving up");
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message(4,s);
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return TRUE;
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}
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extern int compiler_error_named(char *s1, char *s2)
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{ if (no_link_errors > 0) return FALSE;
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if (no_errors > 0) return FALSE;
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snprintf(error_message_buff, ERROR_BUFLEN, "%s \"%s\"",s1,s2);
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ellipsize_error_message_buff();
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compiler_error(error_message_buff);
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return TRUE;
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}
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/* ------------------------------------------------------------------------- */
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/* Code for the Acorn RISC OS operating system, donated by Robin Watts, */
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/* to provide error throwback under the DDE environment */
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/* ------------------------------------------------------------------------- */
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#ifdef ARC_THROWBACK
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#define DDEUtils_ThrowbackStart 0x42587
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#define DDEUtils_ThrowbackSend 0x42588
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#define DDEUtils_ThrowbackEnd 0x42589
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#include "kernel.h"
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extern void throwback_start(void)
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{ _kernel_swi_regs regs;
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if (throwback_switch)
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_kernel_swi(DDEUtils_ThrowbackStart, ®s, ®s);
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}
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extern void throwback_end(void)
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{ _kernel_swi_regs regs;
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if (throwback_switch)
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_kernel_swi(DDEUtils_ThrowbackEnd, ®s, ®s);
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}
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int throwback_started = FALSE;
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extern void throwback(int severity, char * error)
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{ _kernel_swi_regs regs;
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if (!throwback_started)
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{ throwback_started = TRUE;
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throwback_start();
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}
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if (throwback_switch)
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{ regs.r[0] = 1;
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if ((ErrorReport.file_number == -1)
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|| (ErrorReport.file_number == 0))
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regs.r[2] = (int) (InputFiles[0].filename);
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else regs.r[2] = (int) (InputFiles[ErrorReport.file_number-1].filename);
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regs.r[3] = ErrorReport.line_number;
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regs.r[4] = (2-severity);
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regs.r[5] = (int) error;
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_kernel_swi(DDEUtils_ThrowbackSend, ®s, ®s);
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}
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}
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#endif
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/* ========================================================================= */
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/* Data structure management routines */
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/* ------------------------------------------------------------------------- */
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extern void init_errors_vars(void)
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{ forerrors_buff = NULL;
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no_errors = 0; no_warnings = 0; no_suppressed_warnings = 0;
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no_compiler_errors = 0;
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}
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extern void errors_begin_pass(void)
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{ ErrorReport.line_number = 0;
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ErrorReport.file_number = -1;
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ErrorReport.source = "<no text read yet>";
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ErrorReport.main_flag = FALSE;
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ErrorReport.orig_source = NULL;
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ErrorReport.orig_file = 0;
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ErrorReport.orig_line = 0;
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ErrorReport.orig_char = 0;
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}
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extern void errors_allocate_arrays(void)
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{ forerrors_buff = my_malloc(512, "errors buffer");
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}
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extern void errors_free_arrays(void)
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{ my_free(&forerrors_buff, "errors buffer");
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}
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/* ========================================================================= */
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