Add hackyy deduced this support

Author: arBmind

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

@@ -50,6 +50,7 @@ FullySpecifiedType FullySpecifiedType::qualifiedType() const
     ty.setExtern(false);
     ty.setMutable(false);
     ty.setTypedef(false);
+    ty.setThis(false);
 
     ty.setInline(false);
     ty.setVirtual(false);

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

@@ -73,6 +73,9 @@ class CPLUSPLUS_EXPORT FullySpecifiedType final
     bool isTypedef() const { return f._isTypedef; }
     void setTypedef(bool isTypedef) { f._isTypedef = isTypedef; }
 
+    bool isThis() const { return f._isThis; }
+    void setThis(bool isThis) { f._isThis = isThis; }
+
     bool isInline() const { return f._isInline; }
     void setInline(bool isInline) { f._isInline = isInline; }
 
@@ -132,6 +135,7 @@ class CPLUSPLUS_EXPORT FullySpecifiedType final
         unsigned _isExtern: 1;
         unsigned _isMutable: 1;
         unsigned _isTypedef: 1;
+        unsigned _isThis: 1;
 
         // function specifiers
         unsigned _isInline: 1;

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

@@ -1767,6 +1767,13 @@ bool Parser::parseDeclSpecifierSeq(SpecifierListAST *&decl_specifier_seq,
     bool has_type_specifier = false;
     NameAST *named_type_specifier = nullptr;
     SpecifierListAST **decl_specifier_seq_ptr = &decl_specifier_seq;
+    if (LA() == T_THIS) {
+        // this is a placeholder-type-specifier
+        SimpleSpecifierAST *spec = new (_pool) SimpleSpecifierAST;
+        spec->specifier_token = consumeToken();
+        *decl_specifier_seq_ptr = new (_pool) SpecifierListAST(spec);
+        decl_specifier_seq_ptr = &(*decl_specifier_seq_ptr)->next;
+    }
     for (;;) {
         PlaceholderTypeSpecifierAST *placeholderSpec = nullptr;
         // A simple auto is also technically a placeholder-type-specifier, but for historical

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

@@ -359,6 +359,9 @@ class CPLUSPLUS_EXPORT Function final : public Scope, public Type
     bool isTrailingReturnType() const { return f._isTrailingReturnType; }
     void setTrailingReturnType(bool isTrailingReturnType) { f._isTrailingReturnType = isTrailingReturnType; }
 
+    bool hasThisArgument() const { return f._hasThisArgument; }
+    void setHasThisArgument(bool hasThisArgument) { f._hasThisArgument = hasThisArgument; }
+
     bool maybeValidPrototype(int actualArgumentCount) const;
 
     const StringLiteral *exceptionSpecification() { return _exceptionSpecification; }
@@ -396,6 +399,7 @@ class CPLUSPLUS_EXPORT Function final : public Scope, public Type
         unsigned _methodKey: 3;
         unsigned _refQualifier: 2;
         unsigned _isTrailingReturnType :1;
+        unsigned _hasThisArgument :1;
     };
     union {
         unsigned _flags;