keys() function for dictionary as in Python.

Does not work for gfortran which fails with an ICE.

src/YAML_types.f90

@@ -62,6 +62,8 @@ module YAML_types
       tNode_get_byKey_as1dString   => tNode_get_byKey_as1dString
     procedure :: &
       getKey                       => tNode_get_byIndex_asKey
+    procedure :: &
+      Keys                         => tNode_getKeys
     procedure :: &
       getIndex                     => tNode_get_byKey_asIndex
     procedure :: &
@@ -625,6 +627,32 @@ function tNode_get_byIndex_asKey(self,i)  result(key)
 end function tNode_get_byIndex_asKey
 
 
+!--------------------------------------------------------------------------------------------------
+!> @brief Get all keys from a dictionary
+!--------------------------------------------------------------------------------------------------
+function tNode_getKeys(self) result(keys)
+
+  class(tNode), intent(in) :: self
+  character(len=:), dimension(:), allocatable :: keys
+
+  character(len=pStringLen), dimension(:), allocatable :: temp
+  integer :: j, l
+
+  allocate(temp(self%length))
+  l = 0
+  do j = 1, self%length
+    temp(j) = self%getKey(j)
+    l = max(len_trim(temp(j)),l)
+  end do
+
+  allocate(character(l)::keys(self%length))
+  do j = 1, self%length
+    keys(j) = trim(temp(j))
+  end do
+
+end function tNode_getKeys
+
+
 !-------------------------------------------------------------------------------------------------
 !> @brief Checks if a given key/item is present in the dict/list
 !-------------------------------------------------------------------------------------------------

src/material.f90

@@ -108,8 +108,14 @@ subroutine parse()
   homogenizations => config_material%get('homogenization')
 
   call sanityCheck(materials, homogenizations)
+
+#if defined (__GFORTRAN__)
   material_name_phase          = getKeys(phases)
   material_name_homogenization = getKeys(homogenizations)
+#else
+  material_name_phase          = phases%Keys()
+  material_name_homogenization = homogenizations%Keys()
+#endif
 
   allocate(homogenization_Nconstituents(homogenizations%length))
   do h=1, homogenizations%length
@@ -203,9 +209,9 @@ subroutine sanityCheck(materials,homogenizations)
 
 end subroutine sanityCheck
 
-
+#if defined (__GFORTRAN__)
 !--------------------------------------------------------------------------------------------------
-!> @brief Get all keys from a dictionary
+!> @brief %keys() is broken on gfortran
 !--------------------------------------------------------------------------------------------------
 function getKeys(dict)
 
@@ -228,5 +234,6 @@ function getKeys(dict)
   end do
 
 end function getKeys
+#endif
 
 end module material