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// Copyright 2016 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.
#include "core/fpdfapi/parser/cpdf_array.h"
#include <memory>
#include <utility>
#include "core/fpdfapi/parser/cpdf_number.h"
#include "core/fpdfapi/parser/cpdf_reference.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/base/ptr_util.h"
TEST(cpdf_array, RemoveAt) {
{
int elems[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
std::unique_ptr<CPDF_Array> arr(new CPDF_Array);
for (size_t i = 0; i < FX_ArraySize(elems); ++i)
arr->AddNew<CPDF_Number>(elems[i]);
arr->RemoveAt(3, 3);
int expected[] = {1, 2, 3, 7, 8, 9, 10};
EXPECT_EQ(FX_ArraySize(expected), arr->GetCount());
for (size_t i = 0; i < FX_ArraySize(expected); ++i)
EXPECT_EQ(expected[i], arr->GetIntegerAt(i));
arr->RemoveAt(4, 2);
int expected2[] = {1, 2, 3, 7, 10};
EXPECT_EQ(FX_ArraySize(expected2), arr->GetCount());
for (size_t i = 0; i < FX_ArraySize(expected2); ++i)
EXPECT_EQ(expected2[i], arr->GetIntegerAt(i));
}
{
// When the range is out of bound, RemoveAt has no effect.
int elems[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
std::unique_ptr<CPDF_Array> arr(new CPDF_Array);
for (size_t i = 0; i < FX_ArraySize(elems); ++i)
arr->AddNew<CPDF_Number>(elems[i]);
arr->RemoveAt(8, 5);
EXPECT_EQ(FX_ArraySize(elems), arr->GetCount());
for (size_t i = 0; i < FX_ArraySize(elems); ++i)
EXPECT_EQ(elems[i], arr->GetIntegerAt(i));
arr->RemoveAt(0, 12);
EXPECT_EQ(FX_ArraySize(elems), arr->GetCount());
arr->RemoveAt(11, 1);
EXPECT_EQ(FX_ArraySize(elems), arr->GetCount());
}
}
TEST(cpdf_array, InsertAt) {
{
int elems[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
auto arr = pdfium::MakeUnique<CPDF_Array>();
for (size_t i = 0; i < FX_ArraySize(elems); ++i)
arr->InsertNewAt<CPDF_Number>(i, elems[i]);
EXPECT_EQ(FX_ArraySize(elems), arr->GetCount());
for (size_t i = 0; i < FX_ArraySize(elems); ++i)
EXPECT_EQ(elems[i], arr->GetIntegerAt(i));
arr->InsertNewAt<CPDF_Number>(3, 33);
arr->InsertNewAt<CPDF_Number>(6, 55);
arr->InsertNewAt<CPDF_Number>(12, 12);
int expected[] = {1, 2, 3, 33, 4, 5, 55, 6, 7, 8, 9, 10, 12};
EXPECT_EQ(FX_ArraySize(expected), arr->GetCount());
for (size_t i = 0; i < FX_ArraySize(expected); ++i)
EXPECT_EQ(expected[i], arr->GetIntegerAt(i));
}
{
// When the position to insert is beyond the upper bound,
// an element is inserted at that position while other unfilled
// positions have nullptr.
int elems[] = {1, 2};
auto arr = pdfium::MakeUnique<CPDF_Array>();
for (size_t i = 0; i < FX_ArraySize(elems); ++i)
arr->InsertNewAt<CPDF_Number>(i, elems[i]);
arr->InsertNewAt<CPDF_Number>(10, 10);
EXPECT_EQ(11u, arr->GetCount());
for (size_t i = 0; i < FX_ArraySize(elems); ++i)
EXPECT_EQ(elems[i], arr->GetIntegerAt(i));
for (size_t i = FX_ArraySize(elems); i < 10; ++i)
EXPECT_EQ(nullptr, arr->GetObjectAt(i));
EXPECT_EQ(10, arr->GetIntegerAt(10));
}
}
TEST(cpdf_array, Clone) {
{
// Basic case.
int elems[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
auto arr = pdfium::MakeUnique<CPDF_Array>();
for (size_t i = 0; i < FX_ArraySize(elems); ++i)
arr->InsertNewAt<CPDF_Number>(i, elems[i]);
std::unique_ptr<CPDF_Array> arr2 = ToArray(arr->Clone());
EXPECT_EQ(arr->GetCount(), arr2->GetCount());
for (size_t i = 0; i < FX_ArraySize(elems); ++i) {
// Clone() always create new objects.
EXPECT_NE(arr->GetObjectAt(i), arr2->GetObjectAt(i));
EXPECT_EQ(arr->GetIntegerAt(i), arr2->GetIntegerAt(i));
}
}
{
// Clone() with and without dereferencing reference objects.
static const size_t kNumOfRows = 3;
static const size_t kNumOfRowElems = 5;
int elems[kNumOfRows][kNumOfRowElems] = {
{1, 2, 3, 4, 5}, {10, 9, 8, 7, 6}, {11, 12, 13, 14, 15}};
std::unique_ptr<CPDF_Array> arr(new CPDF_Array);
// Indirect references to indirect objects.
std::unique_ptr<CPDF_IndirectObjectHolder> obj_holder(
new CPDF_IndirectObjectHolder());
for (size_t i = 0; i < kNumOfRows; ++i) {
auto arr_elem = pdfium::MakeUnique<CPDF_Array>();
for (size_t j = 0; j < kNumOfRowElems; ++j) {
std::unique_ptr<CPDF_Number> obj(new CPDF_Number(elems[i][j]));
// Starts object number from 1.
int obj_num = i * kNumOfRowElems + j + 1;
obj_holder->ReplaceIndirectObjectIfHigherGeneration(obj_num,
std::move(obj));
arr_elem->InsertNewAt<CPDF_Reference>(j, obj_holder.get(), obj_num);
}
arr->InsertAt(i, std::move(arr_elem));
}
ASSERT_EQ(kNumOfRows, arr->GetCount());
// Not dereferencing reference objects means just creating new references
// instead of new copies of direct objects.
std::unique_ptr<CPDF_Array> arr1 = ToArray(arr->Clone());
EXPECT_EQ(arr->GetCount(), arr1->GetCount());
// Dereferencing reference objects creates new copies of direct objects.
std::unique_ptr<CPDF_Array> arr2 = ToArray(arr->CloneDirectObject());
EXPECT_EQ(arr->GetCount(), arr2->GetCount());
for (size_t i = 0; i < kNumOfRows; ++i) {
CPDF_Array* arr_elem = arr->GetObjectAt(i)->AsArray();
CPDF_Array* arr1_elem = arr1->GetObjectAt(i)->AsArray();
CPDF_Array* arr2_elem = arr2->GetObjectAt(i)->AsArray();
EXPECT_NE(arr_elem, arr1_elem);
EXPECT_NE(arr_elem, arr2_elem);
for (size_t j = 0; j < kNumOfRowElems; ++j) {
auto elem_obj = arr_elem->GetObjectAt(j);
auto elem_obj1 = arr1_elem->GetObjectAt(j);
auto elem_obj2 = arr2_elem->GetObjectAt(j);
// Results from not deferencing reference objects.
EXPECT_NE(elem_obj, elem_obj1);
EXPECT_TRUE(elem_obj1->IsReference());
EXPECT_EQ(elem_obj->GetDirect(), elem_obj1->GetDirect());
EXPECT_EQ(elem_obj->GetInteger(), elem_obj1->GetInteger());
// Results from deferencing reference objects.
EXPECT_NE(elem_obj, elem_obj2);
EXPECT_TRUE(elem_obj2->IsNumber());
EXPECT_NE(elem_obj->GetDirect(), elem_obj2);
EXPECT_EQ(elem_obj->GetObjNum(), elem_obj2->GetObjNum());
EXPECT_EQ(elem_obj->GetInteger(), elem_obj2->GetInteger());
}
}
arr.reset();
ASSERT_EQ(kNumOfRows, arr1->GetCount());
for (size_t i = 0; i < kNumOfRows; ++i) {
for (size_t j = 0; j < kNumOfRowElems; ++j) {
// Results from not deferencing reference objects.
auto elem_obj1 = arr1->GetObjectAt(i)->AsArray()->GetObjectAt(j);
EXPECT_TRUE(elem_obj1->IsReference());
EXPECT_EQ(elems[i][j], elem_obj1->GetInteger());
// Results from deferencing reference objects.
EXPECT_EQ(elems[i][j],
arr2->GetObjectAt(i)->AsArray()->GetIntegerAt(j));
}
}
}
}
TEST(cpdf_array, Iterator) {
int elems[] = {-23, -11, 3, 455, 2345877,
0, 7895330, -12564334, 10000, -100000};
std::unique_ptr<CPDF_Array> arr(new CPDF_Array);
for (size_t i = 0; i < FX_ArraySize(elems); ++i)
arr->InsertNewAt<CPDF_Number>(i, elems[i]);
size_t index = 0;
for (const auto& it : *arr)
EXPECT_EQ(elems[index++], it->AsNumber()->GetInteger());
}
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