| //===-- DWARFDIETest.cpp ----------------------------------------------=---===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "Plugins/SymbolFile/DWARF/DWARFDIE.h" |
| #include "TestingSupport/Symbol/YAMLModuleTester.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| TEST(DWARFDIETest, ChildIteration) { |
| // Tests DWARFDIE::child_iterator. |
| |
| const char *yamldata = R"( |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS64 |
| Data: ELFDATA2LSB |
| Type: ET_EXEC |
| Machine: EM_386 |
| DWARF: |
| debug_abbrev: |
| - Table: |
| - Code: 0x00000001 |
| Tag: DW_TAG_compile_unit |
| Children: DW_CHILDREN_yes |
| Attributes: |
| - Attribute: DW_AT_language |
| Form: DW_FORM_data2 |
| - Code: 0x00000002 |
| Tag: DW_TAG_base_type |
| Children: DW_CHILDREN_no |
| Attributes: |
| - Attribute: DW_AT_encoding |
| Form: DW_FORM_data1 |
| - Attribute: DW_AT_byte_size |
| Form: DW_FORM_data1 |
| debug_info: |
| - Version: 4 |
| AddrSize: 8 |
| Entries: |
| - AbbrCode: 0x00000001 |
| Values: |
| - Value: 0x000000000000000C |
| - AbbrCode: 0x00000002 |
| Values: |
| - Value: 0x0000000000000007 # DW_ATE_unsigned |
| - Value: 0x0000000000000004 |
| - AbbrCode: 0x00000002 |
| Values: |
| - Value: 0x0000000000000007 # DW_ATE_unsigned |
| - Value: 0x0000000000000008 |
| - AbbrCode: 0x00000002 |
| Values: |
| - Value: 0x0000000000000005 # DW_ATE_signed |
| - Value: 0x0000000000000008 |
| - AbbrCode: 0x00000000 |
| )"; |
| |
| YAMLModuleTester t(yamldata); |
| ASSERT_TRUE((bool)t.GetDwarfUnit()); |
| |
| DWARFUnit *unit = t.GetDwarfUnit(); |
| const DWARFDebugInfoEntry *die_first = unit->DIE().GetDIE(); |
| |
| // Create a DWARFDIE that has three DW_TAG_base_type children. |
| DWARFDIE top_die(unit, die_first); |
| |
| // Create the iterator range that has the three tags as elements. |
| llvm::iterator_range<DWARFDIE::child_iterator> children = top_die.children(); |
| |
| // Compare begin() to the first child DIE. |
| DWARFDIE::child_iterator child_iter = children.begin(); |
| ASSERT_NE(child_iter, children.end()); |
| const DWARFDebugInfoEntry *die_child0 = die_first->GetFirstChild(); |
| EXPECT_EQ((*child_iter).GetDIE(), die_child0); |
| |
| // Step to the second child DIE. |
| ++child_iter; |
| ASSERT_NE(child_iter, children.end()); |
| const DWARFDebugInfoEntry *die_child1 = die_child0->GetSibling(); |
| EXPECT_EQ((*child_iter).GetDIE(), die_child1); |
| |
| // Step to the third child DIE. |
| ++child_iter; |
| ASSERT_NE(child_iter, children.end()); |
| const DWARFDebugInfoEntry *die_child2 = die_child1->GetSibling(); |
| EXPECT_EQ((*child_iter).GetDIE(), die_child2); |
| |
| // Step to the end of the range. |
| ++child_iter; |
| EXPECT_EQ(child_iter, children.end()); |
| |
| // Take one of the DW_TAG_base_type DIEs (which has no children) and make |
| // sure the children range is now empty. |
| DWARFDIE no_children_die(unit, die_child0); |
| EXPECT_TRUE(no_children_die.children().empty()); |
| } |