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basic error message from rniEval #59

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basic error message from rniEval #59

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13 changes: 9 additions & 4 deletions jri/src/Rengine.c
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Original file line number Diff line number Diff line change
Expand Up @@ -121,6 +121,12 @@ JNIEXPORT jlong JNICALL Java_org_rosuda_JRI_Rengine_rniParse
return SEXP2L(pstr);
}

void throw_jri_eval_error(JNIEnv *env)
{
jclass exception = (*env)->FindClass(env, "java/lang/RuntimeException");
(*env)->ThrowNew(env, exception, R_curErrorBuf());
}

/**
* Evaluates one expression or a list of expressions
*
Expand All @@ -138,7 +144,7 @@ JNIEXPORT jlong JNICALL Java_org_rosuda_JRI_Rengine_rniEval
int i = 0, l;

/* invalid (NULL) expression (parse error, ... ) */
if (!exp) return 0;
if (!exp) throw_jri_eval_error(env);

if (TYPEOF(exps) == EXPRSXP) {
/* if the object is a list of exps, eval them one by one */
Expand All @@ -147,14 +153,13 @@ JNIEXPORT jlong JNICALL Java_org_rosuda_JRI_Rengine_rniEval
es = R_tryEval(VECTOR_ELT(exps,i), eval_env, &er);

/* an error occured, no need to continue */
if (er) return 0;
if (er) throw_jri_eval_error(env);
i++;
}
} else
es = R_tryEval(exps, eval_env, &er);

/* er is just a flag - on error return 0 */
if (er) return 0;
if (er) throw_jri_eval_error(env);

return SEXP2L(es);
}
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