From 1ce2cc80a4a0ff248cda778ae16de51946fa61b7 Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Mon, 24 Feb 2020 15:40:25 +0100
Subject: CompoundCRS::create(): reject combinations of components not allowed
 by ISO 19111

---
 include/proj/crs.hpp | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/proj/crs.hpp b/include/proj/crs.hpp
index 3b760099..30134cb4 100644
--- a/include/proj/crs.hpp
+++ b/include/proj/crs.hpp
@@ -834,6 +834,22 @@ class PROJ_GCC_DLL ParametricCRS : virtual public SingleCRS {
 
 // ---------------------------------------------------------------------------
 
+/** \brief Exception thrown when attempting to create an invalid compound CRS
+ */
+class PROJ_GCC_DLL InvalidCompoundCRSException : public util::Exception {
+  public:
+    //! @cond Doxygen_Suppress
+    PROJ_INTERNAL explicit InvalidCompoundCRSException(const char *message);
+    PROJ_INTERNAL explicit InvalidCompoundCRSException(
+        const std::string &message);
+    PROJ_DLL
+    InvalidCompoundCRSException(const InvalidCompoundCRSException &other);
+    PROJ_DLL ~InvalidCompoundCRSException() override;
+    //! @endcond
+};
+
+// ---------------------------------------------------------------------------
+
 class CompoundCRS;
 /** Shared pointer of CompoundCRS */
 using CompoundCRSPtr = std::shared_ptr<CompoundCRS>;
@@ -873,7 +889,8 @@ class PROJ_GCC_DLL CompoundCRS final : public CRS,
 
     PROJ_DLL static CompoundCRSNNPtr
     create(const util::PropertyMap &properties,
-           const std::vector<CRSNNPtr> &components);
+           const std::vector<CRSNNPtr>
+               &components); // throw InvalidCompoundCRSException
 
   protected:
     // relaxed: standard say SingleCRSNNPtr
-- 
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