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Warn about unused globals too, not about functions or constants though

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This commit is contained in:
Wolfgang (Blub) Bumiller 2012-08-23 20:32:33 +02:00
parent c84830bdee
commit 8adbf07555
1 changed files with 37 additions and 10 deletions
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47
parser.c
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@ -52,7 +52,7 @@ static ast_expression* parser_parse_statement_or_block(parser_t *parser);
static ast_expression* parser_expression_leave(parser_t *parser, bool stopatcomma);
static ast_expression* parser_expression(parser_t *parser, bool stopatcomma);
void parseerror(parser_t *parser, const char *fmt, ...)
static void parseerror(parser_t *parser, const char *fmt, ...)
{
va_list ap;
@ -64,7 +64,7 @@ void parseerror(parser_t *parser, const char *fmt, ...)
}
/* returns true if it counts as an error */
bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
static bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ...)
{
va_list ap;
int lvl = LVL_WARNING;
@ -84,6 +84,24 @@ bool GMQCC_WARN parsewarning(parser_t *parser, int warntype, const char *fmt, ..
return opts_werror;
}
static bool GMQCC_WARN genwarning(lex_ctx ctx, int warntype, const char *fmt, ...)
{
va_list ap;
int lvl = LVL_WARNING;
if (!OPTS_WARN(warntype))
return false;
if (opts_werror)
lvl = LVL_ERROR;
va_start(ap, fmt);
vprintmsg(lvl, ctx.file, ctx.line, "warning", fmt, ap);
va_end(ap);
return opts_werror;
}
/**********************************************************************
* some maths used for constant folding
*/
@ -2812,6 +2830,7 @@ bool parser_finish(const char *output)
{
size_t i;
ir_builder *ir;
bool retval = true;
if (!parser->errors)
{
@ -2848,9 +2867,15 @@ bool parser_finish(const char *output)
}
}
for (i = 0; i < parser->globals_count; ++i) {
ast_value *asvalue;
if (!ast_istype(parser->globals[i].var, ast_value))
continue;
if (!ast_global_codegen((ast_value*)(parser->globals[i].var), ir)) {
asvalue = (ast_value*)(parser->globals[i].var);
if (!asvalue->uses && !asvalue->isconst && asvalue->expression.vtype != TYPE_FUNCTION) {
retval = retval && !genwarning(ast_ctx(asvalue), WARN_UNUSED_VARIABLE,
"unused global: `%s`", asvalue->name);
}
if (!ast_global_codegen(asvalue, ir)) {
printf("failed to generate global %s\n", parser->globals[i].name);
ir_builder_delete(ir);
return false;
@ -2890,17 +2915,19 @@ bool parser_finish(const char *output)
}
}
if (opts_dump)
ir_builder_dump(ir, printf);
if (retval) {
if (opts_dump)
ir_builder_dump(ir, printf);
if (!ir_builder_generate(ir, output)) {
printf("*** failed to generate output file\n");
ir_builder_delete(ir);
return false;
if (!ir_builder_generate(ir, output)) {
printf("*** failed to generate output file\n");
ir_builder_delete(ir);
return false;
}
}
ir_builder_delete(ir);
return true;
return retval;
}
printf("*** there were compile errors\n");