301 lines
9.0 KiB
C++
301 lines
9.0 KiB
C++
//===-- ObjCLanguage.cpp --------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "ObjCLanguage.h"
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#include "lldb/Core/ConstString.h"
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#include "lldb/Core/PluginManager.h"
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#include "lldb/Core/StreamString.h"
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using namespace lldb;
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using namespace lldb_private;
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void
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ObjCLanguage::Initialize()
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{
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PluginManager::RegisterPlugin (GetPluginNameStatic(),
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"Objective-C Language",
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CreateInstance);
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}
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void
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ObjCLanguage::Terminate()
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{
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PluginManager::UnregisterPlugin (CreateInstance);
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}
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lldb_private::ConstString
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ObjCLanguage::GetPluginNameStatic()
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{
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static ConstString g_name("objc");
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return g_name;
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}
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//------------------------------------------------------------------
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// PluginInterface protocol
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//------------------------------------------------------------------
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lldb_private::ConstString
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ObjCLanguage::GetPluginName()
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{
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return GetPluginNameStatic();
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}
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uint32_t
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ObjCLanguage::GetPluginVersion()
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{
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return 1;
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}
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//------------------------------------------------------------------
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// Static Functions
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//------------------------------------------------------------------
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Language *
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ObjCLanguage::CreateInstance (lldb::LanguageType language)
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{
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switch (language)
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{
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case lldb::eLanguageTypeObjC:
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return new ObjCLanguage();
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default:
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return nullptr;
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}
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}
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void
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ObjCLanguage::MethodName::Clear()
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{
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m_full.Clear();
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m_class.Clear();
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m_category.Clear();
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m_selector.Clear();
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m_type = eTypeUnspecified;
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m_category_is_valid = false;
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}
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bool
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ObjCLanguage::MethodName::SetName (const char *name, bool strict)
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{
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Clear();
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if (name && name[0])
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{
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// If "strict" is true. then the method must be specified with a
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// '+' or '-' at the beginning. If "strict" is false, then the '+'
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// or '-' can be omitted
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bool valid_prefix = false;
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if (name[0] == '+' || name[0] == '-')
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{
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valid_prefix = name[1] == '[';
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if (name[0] == '+')
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m_type = eTypeClassMethod;
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else
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m_type = eTypeInstanceMethod;
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}
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else if (!strict)
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{
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// "strict" is false, the name just needs to start with '['
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valid_prefix = name[0] == '[';
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}
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if (valid_prefix)
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{
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int name_len = strlen (name);
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// Objective C methods must have at least:
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// "-[" or "+[" prefix
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// One character for a class name
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// One character for the space between the class name
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// One character for the method name
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// "]" suffix
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if (name_len >= (5 + (strict ? 1 : 0)) && name[name_len - 1] == ']')
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{
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m_full.SetCStringWithLength(name, name_len);
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}
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}
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}
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return IsValid(strict);
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}
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const ConstString &
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ObjCLanguage::MethodName::GetClassName ()
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{
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if (!m_class)
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{
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if (IsValid(false))
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{
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const char *full = m_full.GetCString();
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const char *class_start = (full[0] == '[' ? full + 1 : full + 2);
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const char *paren_pos = strchr (class_start, '(');
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if (paren_pos)
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{
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m_class.SetCStringWithLength (class_start, paren_pos - class_start);
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}
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else
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{
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// No '(' was found in the full name, we can definitively say
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// that our category was valid (and empty).
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m_category_is_valid = true;
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const char *space_pos = strchr (full, ' ');
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if (space_pos)
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{
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m_class.SetCStringWithLength (class_start, space_pos - class_start);
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if (!m_class_category)
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{
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// No category in name, so we can also fill in the m_class_category
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m_class_category = m_class;
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}
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}
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}
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}
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}
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return m_class;
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}
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const ConstString &
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ObjCLanguage::MethodName::GetClassNameWithCategory ()
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{
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if (!m_class_category)
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{
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if (IsValid(false))
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{
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const char *full = m_full.GetCString();
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const char *class_start = (full[0] == '[' ? full + 1 : full + 2);
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const char *space_pos = strchr (full, ' ');
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if (space_pos)
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{
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m_class_category.SetCStringWithLength (class_start, space_pos - class_start);
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// If m_class hasn't been filled in and the class with category doesn't
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// contain a '(', then we can also fill in the m_class
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if (!m_class && strchr (m_class_category.GetCString(), '(') == NULL)
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{
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m_class = m_class_category;
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// No '(' was found in the full name, we can definitively say
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// that our category was valid (and empty).
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m_category_is_valid = true;
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}
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}
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}
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}
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return m_class_category;
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}
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const ConstString &
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ObjCLanguage::MethodName::GetSelector ()
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{
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if (!m_selector)
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{
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if (IsValid(false))
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{
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const char *full = m_full.GetCString();
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const char *space_pos = strchr (full, ' ');
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if (space_pos)
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{
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++space_pos; // skip the space
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m_selector.SetCStringWithLength (space_pos, m_full.GetLength() - (space_pos - full) - 1);
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}
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}
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}
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return m_selector;
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}
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const ConstString &
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ObjCLanguage::MethodName::GetCategory ()
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{
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if (!m_category_is_valid && !m_category)
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{
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if (IsValid(false))
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{
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m_category_is_valid = true;
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const char *full = m_full.GetCString();
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const char *class_start = (full[0] == '[' ? full + 1 : full + 2);
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const char *open_paren_pos = strchr (class_start, '(');
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if (open_paren_pos)
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{
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++open_paren_pos; // Skip the open paren
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const char *close_paren_pos = strchr (open_paren_pos, ')');
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if (close_paren_pos)
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m_category.SetCStringWithLength (open_paren_pos, close_paren_pos - open_paren_pos);
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}
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}
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}
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return m_category;
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}
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ConstString
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ObjCLanguage::MethodName::GetFullNameWithoutCategory (bool empty_if_no_category)
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{
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if (IsValid(false))
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{
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if (HasCategory())
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{
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StreamString strm;
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if (m_type == eTypeClassMethod)
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strm.PutChar('+');
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else if (m_type == eTypeInstanceMethod)
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strm.PutChar('-');
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strm.Printf("[%s %s]", GetClassName().GetCString(), GetSelector().GetCString());
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return ConstString(strm.GetString().c_str());
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}
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if (!empty_if_no_category)
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{
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// Just return the full name since it doesn't have a category
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return GetFullName();
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}
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}
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return ConstString();
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}
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size_t
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ObjCLanguage::MethodName::GetFullNames (std::vector<ConstString> &names, bool append)
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{
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if (!append)
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names.clear();
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if (IsValid(false))
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{
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StreamString strm;
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const bool is_class_method = m_type == eTypeClassMethod;
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const bool is_instance_method = m_type == eTypeInstanceMethod;
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const ConstString &category = GetCategory();
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if (is_class_method || is_instance_method)
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{
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names.push_back (m_full);
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if (category)
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{
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strm.Printf("%c[%s %s]",
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is_class_method ? '+' : '-',
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GetClassName().GetCString(),
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GetSelector().GetCString());
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names.push_back(ConstString(strm.GetString().c_str()));
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}
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}
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else
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{
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const ConstString &class_name = GetClassName();
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const ConstString &selector = GetSelector();
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strm.Printf("+[%s %s]", class_name.GetCString(), selector.GetCString());
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names.push_back(ConstString(strm.GetString().c_str()));
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strm.Clear();
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strm.Printf("-[%s %s]", class_name.GetCString(), selector.GetCString());
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names.push_back(ConstString(strm.GetString().c_str()));
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strm.Clear();
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if (category)
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{
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strm.Printf("+[%s(%s) %s]", class_name.GetCString(), category.GetCString(), selector.GetCString());
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names.push_back(ConstString(strm.GetString().c_str()));
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strm.Clear();
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strm.Printf("-[%s(%s) %s]", class_name.GetCString(), category.GetCString(), selector.GetCString());
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names.push_back(ConstString(strm.GetString().c_str()));
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}
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}
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}
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return names.size();
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}
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