diff options
| author | Alon Zakai <azakai@google.com> | 2021-01-25 18:12:37 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-01-25 10:12:37 -0800 |
| commit | c74acc0baece1296ad58a0ff44119fb36d98d2c6 (patch) | |
| tree | a056864640cf5f98211bc05bd3342446c2005c31 /src/support/small_vector.h | |
| parent | 27a5a7101d20ce5fc51648e775587ab3d640114e (diff) | |
| download | binaryen-c74acc0baece1296ad58a0ff44119fb36d98d2c6.tar.gz binaryen-c74acc0baece1296ad58a0ff44119fb36d98d2c6.tar.bz2 binaryen-c74acc0baece1296ad58a0ff44119fb36d98d2c6.zip | |
Debug info handling for new EH try-catch (#3496)
We now have multiple catches in each try, and a possible catch-all.
This changes our "extra delimiter" storage to store either an "else"
(unchanged from before) or an arbitrary list of things - we use that
for catches.
Diffstat (limited to 'src/support/small_vector.h')
| -rw-r--r-- | src/support/small_vector.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/support/small_vector.h b/src/support/small_vector.h index 2e65eda41..8ab10c05b 100644 --- a/src/support/small_vector.h +++ b/src/support/small_vector.h @@ -181,6 +181,30 @@ public: ConstIterator end() const { return ConstIterator(this, size()); } }; +// A SmallVector for which some values may be read before they are written, and +// in that case they have the value zero. +template<typename T, size_t N> +struct ZeroInitSmallVector : public SmallVector<T, N> { + T& operator[](size_t i) { + if (i >= this->size()) { + resize(i + 1); + } + return SmallVector<T, N>::operator[](i); + } + + const T& operator[](size_t i) const { + return const_cast<ZeroInitSmallVector<T, N>&>(*this)[i]; + } + + void resize(size_t newSize) { + auto oldSize = this->size(); + SmallVector<T, N>::resize(newSize); + for (size_t i = oldSize; i < this->size(); i++) { + (*this)[i] = 0; + } + } +}; + } // namespace wasm #endif // wasm_support_small_vector_h |