diff options
Diffstat (limited to 'third_party/bigint/BigInteger.cc')
| -rw-r--r-- | third_party/bigint/BigInteger.cc | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/third_party/bigint/BigInteger.cc b/third_party/bigint/BigInteger.cc index 3b23aa1e7b..bac578f974 100644 --- a/third_party/bigint/BigInteger.cc +++ b/third_party/bigint/BigInteger.cc @@ -1,3 +1,9 @@ +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code by Matt McCutchen, see the LICENSE file. + #include "BigInteger.hh" void BigInteger::operator =(const BigInteger &x) { @@ -14,7 +20,11 @@ BigInteger::BigInteger(const Blk *b, Index blen, Sign s) : mag(b, blen) { switch (s) { case zero: if (!mag.isZero()) +#ifdef FOXIT_CHROME_BUILD + abort(); +#else throw "BigInteger::BigInteger(const Blk *, Index, Sign): Cannot use a sign of zero with a nonzero magnitude"; +#endif sign = zero; break; case positive: @@ -25,7 +35,11 @@ BigInteger::BigInteger(const Blk *b, Index blen, Sign s) : mag(b, blen) { default: /* g++ seems to be optimizing out this case on the assumption * that the sign is a valid member of the enumeration. Oh well. */ +#ifdef FOXIT_CHROME_BUILD + abort(); +#else throw "BigInteger::BigInteger(const Blk *, Index, Sign): Invalid sign"; +#endif } } @@ -33,7 +47,11 @@ BigInteger::BigInteger(const BigUnsigned &x, Sign s) : mag(x) { switch (s) { case zero: if (!mag.isZero()) +#ifdef FOXIT_CHROME_BUILD + abort(); +#else throw "BigInteger::BigInteger(const BigUnsigned &, Sign): Cannot use a sign of zero with a nonzero magnitude"; +#endif sign = zero; break; case positive: @@ -44,7 +62,11 @@ BigInteger::BigInteger(const BigUnsigned &x, Sign s) : mag(x) { default: /* g++ seems to be optimizing out this case on the assumption * that the sign is a valid member of the enumeration. Oh well. */ +#ifdef FOXIT_CHROME_BUILD + abort(); +#else throw "BigInteger::BigInteger(const BigUnsigned &, Sign): Invalid sign"; +#endif } } @@ -92,8 +114,12 @@ inline X convertBigUnsignedToPrimitiveAccess(const BigUnsigned &a) { template <class X> X BigInteger::convertToUnsignedPrimitive() const { if (sign == negative) +#ifdef FOXIT_CHROME_BUILD + abort(); +#else throw "BigInteger::to<Primitive>: " "Cannot convert a negative integer to an unsigned type"; +#endif else return convertBigUnsignedToPrimitiveAccess<X>(mag); } @@ -120,8 +146,12 @@ X BigInteger::convertToSignedPrimitive() const { } // Otherwise fall through. } +#ifdef FOXIT_CHROME_BUILD + abort(); +#else throw "BigInteger::to<Primitive>: " "Value is too big to fit in the requested type"; +#endif } unsigned long BigInteger::toUnsignedLong () const { return convertToUnsignedPrimitive<unsigned long > (); } @@ -149,7 +179,11 @@ BigInteger::CmpRes BigInteger::compareTo(const BigInteger &x) const { // Compare the magnitudes, but return the opposite result return CmpRes(-mag.compareTo(x.mag)); default: +#ifdef FOXIT_CHROME_BUILD + abort(); +#else throw "BigInteger internal error"; +#endif } } @@ -281,7 +315,11 @@ void BigInteger::divideWithRemainder(const BigInteger &b, BigInteger &q) { // Defend against aliased calls; // same idea as in BigUnsigned::divideWithRemainder . if (this == &q) +#ifdef FOXIT_CHROME_BUILD + abort(); +#else throw "BigInteger::divideWithRemainder: Cannot write quotient and remainder into the same variable"; +#endif if (this == &b || &q == &b) { BigInteger tmpB(b); divideWithRemainder(tmpB, q); |