Add StaticMap implementation and unittest to breakpad.

StaticMap is a fundamental component class for in-memory representation of loaded symbol.


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@694 4c0a9323-5329-0410-9bdc-e9ce6186880e

1 files changed, 147 insertions, 0 deletions

diff --git a/src/processor/static_map_iterator-inl.h b/src/processor/static_map_iterator-inl.h
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+++ b/src/processor/static_map_iterator-inl.h
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+// Copyright 2010 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// static_map_iterator-inl.h: StaticMapIterator implementation.
+//
+// See static_map_iterator.h for documentation.
+//
+// Author: Siyang Xie (lambxsy@google.com)
+
+#ifndef PROCESSOR_STATIC_MAP_ITERATOR_INL_H__
+#define PROCESSOR_STATIC_MAP_ITERATOR_INL_H__
+
+#include "processor/static_map_iterator.h"
+
+#include "processor/logging.h"
+
+namespace google_breakpad {
+
+template<typename Key, typename Value, typename Compare>
+StaticMapIterator<Key, Value, Compare>::StaticMapIterator(const char* base,
+                                                            const int &index):
+      index_(index), base_(base) {
+  // See static_map.h for documentation on
+  // bytes format of serialized StaticMap data.
+  num_nodes_ = *(reinterpret_cast<const int32_t*>(base_));
+  offsets_ = reinterpret_cast<const u_int32_t*>(base_ + sizeof(num_nodes_));
+  keys_ = reinterpret_cast<const Key*>(
+      base_ + (1 + num_nodes_) * sizeof(num_nodes_));
+}
+
+// Increment & Decrement operators:
+template<typename Key, typename Value, typename Compare>
+StaticMapIterator<Key, Value, Compare>&
+StaticMapIterator<Key, Value, Compare>::operator++() {
+  if (!IsValid()) {
+    BPLOG(ERROR) << "operator++ on invalid iterator";
+    return *this;
+  }
+  if (++index_ > num_nodes_) index_ = num_nodes_;
+  return *this;
+}
+
+template<typename Key, typename Value, typename Compare>
+StaticMapIterator<Key, Value, Compare>
+StaticMapIterator<Key, Value, Compare>::operator++(int postfix_operator) {
+  if (!IsValid()) {
+    BPLOG(ERROR) << "operator++ on invalid iterator";
+    return *this;
+  }
+  StaticMapIterator<Key, Value, Compare> tmp = *this;
+  if (++index_ > num_nodes_) index_ = num_nodes_;
+  return tmp;
+}
+
+template<typename Key, typename Value, typename Compare>
+StaticMapIterator<Key, Value, Compare>&
+StaticMapIterator<Key, Value, Compare>::operator--() {
+  if (!IsValid()) {
+    BPLOG(ERROR) << "operator++ on invalid iterator";
+    return *this;
+  }
+
+  if (--index_ < 0) index_ = 0;
+  return *this;
+}
+
+template<typename Key, typename Value, typename Compare>
+StaticMapIterator<Key, Value, Compare>
+StaticMapIterator<Key, Value, Compare>::operator--(int postfix_operator) {
+  if (!IsValid()) {
+    BPLOG(ERROR) << "operator++ on invalid iterator";
+    return *this;
+  }
+  StaticMapIterator<Key, Value, Compare> tmp = *this;
+
+  if (--index_ < 0) index_ = 0;
+  return tmp;
+}
+
+template<typename Key, typename Value, typename Compare>
+const Key* StaticMapIterator<Key, Value, Compare>::GetKeyPtr() const {
+  if (!IsValid()) {
+    BPLOG(ERROR) << "call GetKeyPtr() on invalid iterator";
+    return NULL;
+  }
+  return &(keys_[index_]);
+}
+
+template<typename Key, typename Value, typename Compare>
+const char* StaticMapIterator<Key, Value, Compare>::GetValueRawPtr() const {
+  if (!IsValid()) {
+    BPLOG(ERROR) << "call GetValuePtr() on invalid iterator";
+    return NULL;
+  }
+  return base_ + offsets_[index_];
+}
+
+template<typename Key, typename Value, typename Compare>
+bool StaticMapIterator<Key, Value, Compare>::operator==(
+    const StaticMapIterator<Key, Value, Compare>& x) const {
+  return base_ == x.base_ && index_ == x.index_;
+}
+
+template<typename Key, typename Value, typename Compare>
+bool StaticMapIterator<Key, Value, Compare>::operator!=(
+    const StaticMapIterator<Key, Value, Compare>& x) const {
+  // Only need to compare base_ and index_.
+  // Other data members are auxiliary.
+  return base_ != x.base_ || index_ != x.index_;
+}
+
+template<typename Key, typename Value, typename Compare>
+bool StaticMapIterator<Key, Value, Compare>::IsValid() const {
+  if (!base_ || index_ < 0 || index_ > num_nodes_)
+    return false;
+
+  return true;
+}
+
+}  // namespace google_breakpad
+
+#endif  // PROCESSOR_STATIC_MAP_ITERATOR_INL_H__