Make Type hierarchy methods const

src/dmd/astbase.d

@@ -3438,7 +3438,7 @@ struct ASTBase
         }
 
         // TypeBasic, TypeVector, TypePointer, TypeEnum override this method
-        bool isscalar()
+        bool isscalar() const
         {
             return false;
         }

src/dmd/attrib.d

@@ -168,9 +168,9 @@ extern (C++) abstract class AttribDeclaration : Dsymbol
         include(null).foreachDsymbol( s => s.setFieldOffset(ad, poffset, isunion) );
     }
 
-    override final bool hasPointers()
+    override final bool hasPointers() const
     {
-        return include(null).foreachDsymbol( (s) { return s.hasPointers(); } ) != 0;
+        return (cast() this).include(null).foreachDsymbol( (s) { return s.hasPointers(); } ) != 0;
     }
 
     override final bool hasStaticCtorOrDtor()

src/dmd/attrib.h

@@ -34,7 +34,7 @@ class AttribDeclaration : public Dsymbol
     const char *kind() const;
     bool oneMember(Dsymbol **ps, Identifier *ident);
     void setFieldOffset(AggregateDeclaration *ad, unsigned *poffset, bool isunion);
-    bool hasPointers();
+    bool hasPointers() const;
     bool hasStaticCtorOrDtor();
     void checkCtorConstInit();
     void addLocalClass(ClassDeclarations *);

src/dmd/declaration.d

@@ -1348,10 +1348,10 @@ extern (C++) class VarDeclaration : Declaration
                 v.offset <   offset + tsz;
     }
 
-    override final bool hasPointers()
+    override final bool hasPointers() const
     {
         //printf("VarDeclaration::hasPointers() %s, ty = %d\n", toChars(), type.ty);
-        return (!isDataseg() && type.hasPointers());
+        return (!(cast() this).isDataseg() && type.hasPointers());
     }
 
     /*************************************

src/dmd/declaration.h

@@ -254,7 +254,7 @@ class VarDeclaration : public Declaration
     bool isThreadlocal();
     bool isCTFE();
     bool isOverlappedWith(VarDeclaration *v);
-    bool hasPointers();
+    bool hasPointers() const;
     bool canTakeAddressOf();
     bool needsScopeDtor();
     bool enclosesLifetimeOf(VarDeclaration *v) const;

src/dmd/dsymbol.d

@@ -1051,7 +1051,7 @@ extern (C++) class Dsymbol : ASTNode
     /*****************************************
      * Is Dsymbol a variable that contains pointers?
      */
-    bool hasPointers()
+    bool hasPointers() const
     {
         //printf("Dsymbol::hasPointers() %s\n", toChars());
         return false;

src/dmd/dsymbol.h

@@ -218,7 +218,7 @@ class Dsymbol : public ASTNode
     virtual Dsymbol *syntaxCopy(Dsymbol *s);    // copy only syntax trees
     virtual bool oneMember(Dsymbol **ps, Identifier *ident);
     virtual void setFieldOffset(AggregateDeclaration *ad, unsigned *poffset, bool isunion);
-    virtual bool hasPointers();
+    virtual bool hasPointers() const;
     virtual bool hasStaticCtorOrDtor();
     virtual void addLocalClass(ClassDeclarations *) { }
     virtual void addObjcSymbols(ClassDeclarations *, ClassDeclarations *) { }

src/dmd/dtemplate.d

@@ -7440,10 +7440,10 @@ extern (C++) final class TemplateMixin : TemplateInstance
         return members.foreachDsymbol( (s) { return s && s.apply(fp, param); } );
     }
 
-    override bool hasPointers()
+    override bool hasPointers() const
     {
         //printf("TemplateMixin.hasPointers() %s\n", toChars());
-        return members.foreachDsymbol( (s) { return s.hasPointers(); } ) != 0;
+        return (cast(Dsymbols*) members).foreachDsymbol( (s) { return s.hasPointers(); } ) != 0;
     }
 
     override void setFieldOffset(AggregateDeclaration ad, uint* poffset, bool isunion)