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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "js/CompilationAndEvaluation.h"
#include "js/Exception.h"
#include "js/GlobalObject.h"
#include "js/SourceText.h"
#include "jsapi-tests/tests.h"
#include "vm/ErrorReporting.h"
BEGIN_TEST(testErrorLineOfContext) {
static const char16_t fullLineR[] = u"\n var x = @; \r ";
CHECK(testLineOfContextHasNoLineTerminator(fullLineR, ' '));
static const char16_t fullLineN[] = u"\n var x = @; !\n ";
CHECK(testLineOfContextHasNoLineTerminator(fullLineN, '!'));
static const char16_t fullLineLS[] = u"\n var x = @; +\u2028 ";
CHECK(testLineOfContextHasNoLineTerminator(fullLineLS, '+'));
static const char16_t fullLinePS[] = u"\n var x = @; #\u2029 ";
CHECK(testLineOfContextHasNoLineTerminator(fullLinePS, '#'));
static_assert(js::ErrorMetadata::lineOfContextRadius == 60,
"current max count past offset is 60, hits 'X' below");
static const char16_t truncatedLine[] =
u"@ + 4567890123456789012345678901234567890123456789012345678XYZW\n";
CHECK(testLineOfContextHasNoLineTerminator(truncatedLine, 'X'));
return true;
}
bool eval(const char16_t* chars, size_t len, JS::MutableHandleValue rval) {
JS::RealmOptions globalOptions;
JS::RootedObject global(
cx, JS_NewGlobalObject(cx, getGlobalClass(), nullptr,
JS::FireOnNewGlobalHook, globalOptions));
CHECK(global);
JSAutoRealm ar(cx, global);
JS::SourceText<char16_t> srcBuf;
CHECK(srcBuf.init(cx, chars, len, JS::SourceOwnership::Borrowed));
JS::CompileOptions options(cx);
return JS::Evaluate(cx, options, srcBuf, rval);
}
template <size_t N>
bool testLineOfContextHasNoLineTerminator(const char16_t (&chars)[N],
char16_t expectedLast) {
JS::RootedValue rval(cx);
CHECK(!eval(chars, N - 1, &rval));
JS::ExceptionStack exnStack(cx);
CHECK(JS::StealPendingExceptionStack(cx, &exnStack));
JS::ErrorReportBuilder report(cx);
CHECK(report.init(cx, exnStack, JS::ErrorReportBuilder::WithSideEffects));
const auto* errorReport = report.report();
const char16_t* lineOfContext = errorReport->linebuf();
size_t lineOfContextLength = errorReport->linebufLength();
CHECK(lineOfContext[lineOfContextLength] == '\0');
char16_t last = lineOfContext[lineOfContextLength - 1];
CHECK(last == expectedLast);
return true;
}
END_TEST(testErrorLineOfContext)