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remove useless text from js errors 

Reviewed By: astreet

Differential Revision: D3127112

fbshipit-source-id: 56ee9da8cd7d409c7b13864e6d4cc863146d19f0
This commit is contained in:
Marc Horowitz 2016-05-13 17:14:49 -07:00 committed by Facebook Github Bot 8
parent 7762297f77
commit 448b48ca85
1 changed files with 25 additions and 9 deletions
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34
ReactCommon/bridge/JSCHelpers.cpp
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@ -3,6 +3,7 @@
#include "JSCHelpers.h"
#include <JavaScriptCore/JSStringRef.h>
#include <folly/String.h>
#include <glog/logging.h>
#include "Value.h"
@ -36,18 +37,33 @@ JSValueRef evaluateScript(JSContextRef context, JSStringRef script, JSStringRef
result = JSEvaluateScript(context, script, NULL, source, 0, &exn);
if (result == nullptr) {
Value exception = Value(context, exn);
std::string exceptionText = exception.toString().str();
LOG(ERROR) << "Got JS Exception: " << exceptionText;
auto line = exception.asObject().getProperty("line");
std::ostringstream locationInfo;
std::string file = source != nullptr ? String::ref(source).str() : "";
locationInfo << "(" << (file.length() ? file : "<unknown file>");
std::string exceptionText = exception.toString().str();
// The null/empty-ness of source tells us if the JS came from a
// file/resource, or was a constructed statement. The location
// info will include that source, if any.
std::string locationInfo = source != nullptr ? String::ref(source).str() : "";
auto line = exception.asObject().getProperty("line");
if (line != nullptr && line.isNumber()) {
locationInfo << ":" << line.asInteger();
if (locationInfo.empty() && line.asInteger() != 1) {
// If there is a non-trivial line number, but there was no
// location info, we include a placeholder, and the line
// number.
locationInfo = folly::to<std::string>("<unknown file>:", line.asInteger());
} else if (!locationInfo.empty()) {
// If there is location info, we always include the line
// number, regardless of its value.
locationInfo += folly::to<std::string>(":", line.asInteger());
}
locationInfo << ")";
throwJSExecutionException("%s %s", exceptionText.c_str(), locationInfo.str().c_str());
}
if (!locationInfo.empty()) {
exceptionText += " (" + locationInfo + ")";
}
LOG(ERROR) << "Got JS Exception: " << exceptionText;
throwJSExecutionException("%s", exceptionText.c_str());
}
return result;
}