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#include "jsi.h"
#define QQ(X) #X
#define Q(X) QQ(X)
static int jsB_stacktrace(js_State *J, int skip)
{
char buf[256];
int n = J->tracetop - skip;
if (n <= 0)
return 0;
for (; n > 0; --n) {
const char *name = J->trace[n].name;
const char *file = J->trace[n].file;
int line = J->trace[n].line;
if (line > 0) {
if (name[0])
snprintf(buf, sizeof buf, "\n\tat %s (%s:%d)", name, file, line);
else
snprintf(buf, sizeof buf, "\n\tat %s:%d", file, line);
} else
snprintf(buf, sizeof buf, "\n\tat %s (%s)", name, file);
js_pushstring(J, buf);
if (n < J->tracetop - skip)
js_concat(J);
}
return 1;
}
static void Ep_toString(js_State *J)
{
const char *name = "Error";
const char *message = "";
if (!js_isobject(J, -1))
js_typeerror(J, "not an object");
if (js_hasproperty(J, 0, "name"))
name = js_tostring(J, -1);
if (js_hasproperty(J, 0, "message"))
message = js_tostring(J, -1);
if (name[0] == 0)
js_pushstring(J, message);
else if (message[0] == 0)
js_pushstring(J, name);
else {
js_pushstring(J, name);
js_pushstring(J, ": ");
js_concat(J);
js_pushstring(J, message);
js_concat(J);
}
}
static void Ep_get_stack(js_State *J)
{
Ep_toString(J);
js_getproperty(J, 0, "stackTrace");
js_concat(J);
}
static int jsB_ErrorX(js_State *J, js_Object *prototype)
{
js_pushobject(J, jsV_newobject(J, JS_CERROR, prototype));
if (js_isdefined(J, 1)) {
js_pushstring(J, js_tostring(J, 1));
js_defproperty(J, -2, "message", JS_DONTENUM);
}
if (jsB_stacktrace(J, 1))
js_defproperty(J, -2, "stackTrace", JS_DONTENUM);
return 1;
}
static void js_newerrorx(js_State *J, const char *message, js_Object *prototype)
{
js_pushobject(J, jsV_newobject(J, JS_CERROR, prototype));
js_pushstring(J, message);
js_setproperty(J, -2, "message");
if (jsB_stacktrace(J, 0))
js_setproperty(J, -2, "stackTrace");
}
#define DERROR(name, Name) \
static void jsB_##Name(js_State *J) { \
jsB_ErrorX(J, J->Name##_prototype); \
} \
void js_new##name(js_State *J, const char *s) { \
js_newerrorx(J, s, J->Name##_prototype); \
} \
void js_##name(js_State *J, const char *fmt, ...) { \
va_list ap; \
char buf[256]; \
va_start(ap, fmt); \
vsnprintf(buf, sizeof buf, fmt, ap); \
va_end(ap); \
js_newerrorx(J, buf, J->Name##_prototype); \
js_throw(J); \
}
DERROR(error, Error)
DERROR(evalerror, EvalError)
DERROR(rangeerror, RangeError)
DERROR(referenceerror, ReferenceError)
DERROR(syntaxerror, SyntaxError)
DERROR(typeerror, TypeError)
DERROR(urierror, URIError)
#undef DERROR
void jsB_initerror(js_State *J)
{
js_pushobject(J, J->Error_prototype);
{
jsB_props(J, "name", "Error");
jsB_propf(J, "Error.prototype.toString", Ep_toString, 0);
js_newcfunction(J, Ep_get_stack, "stack", 0);
js_pushnull(J);
js_defaccessor(J, -3, "stack", JS_READONLY | JS_DONTENUM | JS_DONTCONF);
}
js_newcconstructor(J, jsB_Error, jsB_Error, "Error", 1);
js_defglobal(J, "Error", JS_DONTENUM);
#define IERROR(NAME) \
js_pushobject(J, J->NAME##_prototype); \
jsB_props(J, "name", Q(NAME)); \
js_newcconstructor(J, jsB_##NAME, jsB_##NAME, Q(NAME), 1); \
js_defglobal(J, Q(NAME), JS_DONTENUM);
IERROR(EvalError);
IERROR(RangeError);
IERROR(ReferenceError);
IERROR(SyntaxError);
IERROR(TypeError);
IERROR(URIError);
#undef IERROR
}
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