153 lines
6.4 KiB
C
153 lines
6.4 KiB
C
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/*
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* Error and fatal handling.
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*/
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#include "duk_internal.h"
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#define DUK__ERRFMT_BUFSIZE 256 /* size for formatting buffers */
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#if defined(DUK_USE_VERBOSE_ERRORS)
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DUK_INTERNAL DUK_COLD void duk_err_handle_error_fmt(duk_hthread *thr, const char *filename, duk_uint_t line_and_code, const char *fmt, ...) {
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va_list ap;
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char msg[DUK__ERRFMT_BUFSIZE];
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va_start(ap, fmt);
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(void) DUK_VSNPRINTF(msg, sizeof(msg), fmt, ap);
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msg[sizeof(msg) - 1] = (char) 0;
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duk_err_create_and_throw(thr, (duk_errcode_t) (line_and_code >> 24), msg, filename, (duk_int_t) (line_and_code & 0x00ffffffL));
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va_end(ap); /* dead code, but ensures portability (see Linux man page notes) */
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}
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DUK_INTERNAL DUK_COLD void duk_err_handle_error(duk_hthread *thr, const char *filename, duk_uint_t line_and_code, const char *msg) {
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duk_err_create_and_throw(thr, (duk_errcode_t) (line_and_code >> 24), msg, filename, (duk_int_t) (line_and_code & 0x00ffffffL));
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}
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#else /* DUK_USE_VERBOSE_ERRORS */
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DUK_INTERNAL DUK_COLD void duk_err_handle_error(duk_hthread *thr, duk_errcode_t code) {
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duk_err_create_and_throw(thr, code);
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}
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#endif /* DUK_USE_VERBOSE_ERRORS */
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/*
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* Error throwing helpers
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*/
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#if defined(DUK_USE_VERBOSE_ERRORS)
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#if defined(DUK_USE_PARANOID_ERRORS)
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DUK_INTERNAL DUK_COLD void duk_err_require_type_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t idx, const char *expect_name) {
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DUK_ERROR_RAW_FMT3(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, "%s required, found %s (stack index %ld)",
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expect_name, duk_get_type_name(thr, idx), (long) idx);
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}
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#else
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DUK_INTERNAL DUK_COLD void duk_err_require_type_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t idx, const char *expect_name) {
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DUK_ERROR_RAW_FMT3(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, "%s required, found %s (stack index %ld)",
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expect_name, duk_push_string_readable(thr, idx), (long) idx);
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}
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#endif
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DUK_INTERNAL DUK_COLD void duk_err_error_internal(duk_hthread *thr, const char *filename, duk_int_t linenumber) {
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DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_ERROR, DUK_STR_INTERNAL_ERROR);
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}
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DUK_INTERNAL DUK_COLD void duk_err_error_alloc_failed(duk_hthread *thr, const char *filename, duk_int_t linenumber) {
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DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_ERROR, DUK_STR_ALLOC_FAILED);
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}
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DUK_INTERNAL DUK_COLD void duk_err_error(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message) {
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DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_ERROR, message);
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}
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DUK_INTERNAL DUK_COLD void duk_err_range(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message) {
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DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_RANGE_ERROR, message);
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}
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DUK_INTERNAL DUK_COLD void duk_err_range_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t idx) {
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DUK_ERROR_RAW_FMT1(thr, filename, linenumber, DUK_ERR_RANGE_ERROR, "invalid stack index %ld", (long) (idx));
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}
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DUK_INTERNAL DUK_COLD void duk_err_range_push_beyond(duk_hthread *thr, const char *filename, duk_int_t linenumber) {
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DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_RANGE_ERROR, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
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}
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DUK_INTERNAL DUK_COLD void duk_err_type_invalid_args(duk_hthread *thr, const char *filename, duk_int_t linenumber) {
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DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, DUK_STR_INVALID_ARGS);
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}
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DUK_INTERNAL DUK_COLD void duk_err_type_invalid_state(duk_hthread *thr, const char *filename, duk_int_t linenumber) {
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DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, DUK_STR_INVALID_STATE);
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}
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DUK_INTERNAL DUK_COLD void duk_err_type_invalid_trap_result(duk_hthread *thr, const char *filename, duk_int_t linenumber) {
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DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, DUK_STR_INVALID_TRAP_RESULT);
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}
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#else
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/* The file/line arguments are NULL and 0, they're ignored by DUK_ERROR_RAW()
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* when non-verbose errors are used.
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*/
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DUK_NORETURN(DUK_LOCAL_DECL void duk__err_shared(duk_hthread *thr, duk_errcode_t code));
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DUK_LOCAL void duk__err_shared(duk_hthread *thr, duk_errcode_t code) {
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DUK_ERROR_RAW(thr, NULL, 0, code, NULL);
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}
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DUK_INTERNAL DUK_COLD void duk_err_error(duk_hthread *thr) {
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duk__err_shared(thr, DUK_ERR_ERROR);
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}
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DUK_INTERNAL DUK_COLD void duk_err_range(duk_hthread *thr) {
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duk__err_shared(thr, DUK_ERR_RANGE_ERROR);
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}
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DUK_INTERNAL DUK_COLD void duk_err_eval(duk_hthread *thr) {
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duk__err_shared(thr, DUK_ERR_EVAL_ERROR);
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}
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DUK_INTERNAL DUK_COLD void duk_err_reference(duk_hthread *thr) {
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duk__err_shared(thr, DUK_ERR_REFERENCE_ERROR);
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}
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DUK_INTERNAL DUK_COLD void duk_err_syntax(duk_hthread *thr) {
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duk__err_shared(thr, DUK_ERR_SYNTAX_ERROR);
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}
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DUK_INTERNAL DUK_COLD void duk_err_type(duk_hthread *thr) {
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duk__err_shared(thr, DUK_ERR_TYPE_ERROR);
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}
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DUK_INTERNAL DUK_COLD void duk_err_uri(duk_hthread *thr) {
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duk__err_shared(thr, DUK_ERR_URI_ERROR);
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}
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#endif
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/*
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* Default fatal error handler
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*/
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DUK_INTERNAL DUK_COLD void duk_default_fatal_handler(void *udata, const char *msg) {
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DUK_UNREF(udata);
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DUK_UNREF(msg);
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msg = msg ? msg : "NULL";
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#if defined(DUK_USE_FATAL_HANDLER)
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/* duk_config.h provided a custom default fatal handler. */
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DUK_D(DUK_DPRINT("custom default fatal error handler called: %s", msg));
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DUK_USE_FATAL_HANDLER(udata, msg);
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#elif defined(DUK_USE_CPP_EXCEPTIONS)
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/* With C++ use a duk_fatal_exception which user code can catch in
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* a natural way.
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*/
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DUK_D(DUK_DPRINT("built-in default C++ fatal error handler called: %s", msg));
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throw duk_fatal_exception(msg);
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#else
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/* Default behavior is to abort() on error. There's no printout
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* which makes this awkward, so it's always recommended to use an
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* explicit fatal error handler.
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*
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* ====================================================================
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* NOTE: If you are seeing this, you are most likely dealing with an
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* uncaught error. You should provide a fatal error handler in Duktape
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* heap creation, and should consider using a protected call as your
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* first call into an empty Duktape context to properly handle errors.
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* See:
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* - http://duktape.org/guide.html#error-handling
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* - http://wiki.duktape.org/HowtoFatalErrors.html
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* - http://duktape.org/api.html#taglist-protected
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* ====================================================================
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*/
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DUK_D(DUK_DPRINT("built-in default fatal error handler called: %s", msg));
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DUK_ABORT();
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#endif
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DUK_D(DUK_DPRINT("fatal error handler returned, enter forever loop"));
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for (;;) {
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/* Loop forever to ensure we don't return. */
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}
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}
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