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JS: deobfuscate stack traces for wrapped native exceptions

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This commit is contained in:
Alexey Andreev 2019-01-30 14:32:43 +03:00
parent 42aedf770b
commit daeaa502d6
1 changed files with 23 additions and 19 deletions
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42
core/src/main/resources/org/teavm/backend/javascript/runtime.js
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@ -228,28 +228,31 @@ function $rt_exception(ex) {
} }
err.$javaException = ex; err.$javaException = ex;
ex.$jsException = err; ex.$jsException = err;
if (typeof $rt_decodeStack === "function" && err.stack) { $rt_fillStack(err, ex);
var stack = $rt_decodeStack(err.stack);
var javaStack = $rt_createArray($rt_objcls(), stack.length);
var elem;
var noStack = false;
for (var i = 0; i < stack.length; ++i) {
var element = stack[i];
elem = $rt_createStackElement($rt_str(element.className),
$rt_str(element.methodName), $rt_str(element.fileName), element.lineNumber);
if (elem == null) {
noStack = true;
break;
}
javaStack.data[i] = elem;
}
if (!noStack) {
$rt_setStack(ex, javaStack);
}
}
} }
return err; return err;
} }
function $rt_fillStack(err, ex) {
if (typeof $rt_decodeStack === "function" && err.stack) {
var stack = $rt_decodeStack(err.stack);
var javaStack = $rt_createArray($rt_objcls(), stack.length);
var elem;
var noStack = false;
for (var i = 0; i < stack.length; ++i) {
var element = stack[i];
elem = $rt_createStackElement($rt_str(element.className),
$rt_str(element.methodName), $rt_str(element.fileName), element.lineNumber);
if (elem == null) {
noStack = true;
break;
}
javaStack.data[i] = elem;
}
if (!noStack) {
$rt_setStack(ex, javaStack);
}
}
}
function $rt_createMultiArray(cls, dimensions) { function $rt_createMultiArray(cls, dimensions) {
var first = 0; var first = 0;
for (var i = dimensions.length - 1; i >= 0; i = (i - 1) | 0) { for (var i = dimensions.length - 1; i >= 0; i = (i - 1) | 0) {
@ -553,6 +556,7 @@ function $rt_wrapException(err) {
ex = $rt_createException($rt_str("(JavaScript) " + err.toString())); ex = $rt_createException($rt_str("(JavaScript) " + err.toString()));
err.$javaException = ex; err.$javaException = ex;
ex.$jsException = err; ex.$jsException = err;
$rt_fillStack(err, ex);
} }
return ex; return ex;
} }