Remove workarounds for unsupported compilers

Change-Id: Ie28ff761b0bae13c6ebdf7dd649cfbba28e0fc2c
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@qt.io>

src/libs/3rdparty/cplusplus/Parser.cpp

@@ -33,9 +33,7 @@
 #include <string>
 #include <cstdio> // for putchar
 
-#if defined(_MSC_VER) && (_MSC_VER < 1800)
-#    define va_copy(dst, src) ((dst) = (src))
-#elif defined(__INTEL_COMPILER) && !defined(va_copy)
+#if defined(__INTEL_COMPILER) && !defined(va_copy)
 #    define va_copy __va_copy
 #endif
 

src/libs/3rdparty/cplusplus/TranslationUnit.cpp

@@ -32,9 +32,7 @@
 #include <algorithm>
 #include <utility>
 
-#if defined(_MSC_VER) && (_MSC_VER < 1800)
-#    define va_copy(dst, src) ((dst) = (src))
-#elif defined(__INTEL_COMPILER) && !defined(va_copy)
+#if defined(__INTEL_COMPILER) && !defined(va_copy)
 #    define va_copy __va_copy
 #endif
 

src/libs/3rdparty/cplusplus/TranslationUnit.h

@@ -25,20 +25,8 @@
 #include "Token.h"
 #include "DiagnosticClient.h"
 #include <cstdio>
-#include <vector>
-
-#if !(__cplusplus > 199711L || __GXX_EXPERIMENTAL_CXX0X__ || _MSC_VER >= 1600 || defined( _LIBCPP_VERSION )) \
-    || (defined(__GNUC_LIBSTD__) && ((__GNUC_LIBSTD__-0) * 100 + __GNUC_LIBSTD_MINOR__-0 <= 402))
-#define USE_TR1
-#endif
-
-#if defined(_MSC_VER) && _MSC_VER < 1600
-#  include <map>
-#elif defined(USE_TR1)
-#  include <tr1/unordered_map>
-#else
 #include <unordered_map>
-#endif
+#include <vector>
 
 namespace CPlusPlus {
 
@@ -185,14 +173,7 @@ private:
     std::vector<Token> *_comments;
     std::vector<unsigned> _lineOffsets;
     std::vector<PPLine> _ppLines;
-#if defined(_MSC_VER) && _MSC_VER < 1600
-    // MSVC2008 and earlier do not implement TR1.
-    typedef std::map<unsigned, std::pair<unsigned, unsigned> > TokenLineColumn;
-#elif defined(USE_TR1)
-    typedef std::tr1::unordered_map<unsigned, std::pair<unsigned, unsigned> > TokenLineColumn;
-#else
     typedef std::unordered_map<unsigned, std::pair<unsigned, unsigned> > TokenLineColumn;
-#endif
     TokenLineColumn _expandedLineColumn;
     MemoryPool *_pool;
     AST *_ast;

src/libs/cplusplus/LookupItem.h

@@ -73,9 +73,3 @@ private:
 uint qHash(const CPlusPlus::LookupItem &result);
 
 } // namespace CPlusPlus
-
-#if defined(Q_CC_MSVC) && _MSC_VER <= 1300
-//this ensures that code outside QmlJS can use the hash function
-//it also a workaround for some compilers
-inline uint qHash(const CPlusPlus::LookupItem &item) { return CPlusPlus::qHash(item); }
-#endif

src/libs/sqlite/sqlitedatabasebackend.cpp

@@ -38,17 +38,9 @@
 
 #include "sqlite3.h"
 
-#if defined(Q_CC_GNU)
-#define QTC_THREAD_LOCAL __thread
-#elif defined(Q_CC_MSVC)
-#define QTC_THREAD_LOCAL __declspec(thread)
-#else
-#define QTC_THREAD_LOCAL thread_local
-#endif
-
 #define SIZE_OF_BYTEARRAY_ARRAY(array) sizeof(array)/sizeof(QByteArray)
 
-QTC_THREAD_LOCAL SqliteDatabaseBackend *sqliteDatabaseBackend = nullptr;
+thread_local SqliteDatabaseBackend *sqliteDatabaseBackend = nullptr;
 
 SqliteDatabaseBackend::SqliteDatabaseBackend()
     : databaseHandle(nullptr),

src/libs/utils/scopedswap.h

@@ -25,13 +25,7 @@
 
 #pragma once
 
-#if !(__cplusplus > 199711L || __GXX_EXPERIMENTAL_CXX0X__ || _MSC_VER >= 1600 || defined( _LIBCPP_VERSION )) || \
-    (defined(__GNUC_LIBSTD__) && ((__GNUC_LIBSTD__-0) * 100 + __GNUC_LIBSTD_MINOR__-0 <= 402))
-#  include <algorithm>
-#else // C++11
 #include <utility>
-#endif
-
 
 namespace Utils {
 /// RAII object to save a value, and restore it when the scope is left.