diff --git a/thirdparty/misc/clipper.cpp b/thirdparty/misc/clipper.cpp index 8c3a59c4ca..c67045d113 100644 --- a/thirdparty/misc/clipper.cpp +++ b/thirdparty/misc/clipper.cpp @@ -48,6 +48,38 @@ #include <ostream> #include <functional> +//Explicitly disables exceptions handling for target platform +//#define CLIPPER_NOEXCEPTION + +#define CLIPPER_THROW(exception) std::abort() +#define CLIPPER_TRY if(true) +#define CLIPPER_CATCH(exception) if(false) + +#if defined(__cpp_exceptions) || defined(__EXCEPTIONS) || defined(_CPPUNWIND) + #ifndef CLIPPER_NOEXCEPTION + #undef CLIPPER_THROW + #define CLIPPER_THROW(exception) throw exception + #undef CLIPPER_TRY + #define CLIPPER_TRY try + #undef CLIPPER_CATCH + #define CLIPPER_CATCH(exception) catch(exception) + #endif +#endif + +//Optionally allows to override exception macros +#if defined(CLIPPER_THROW_USER) + #undef CLIPPER_THROW + #define CLIPPER_THROW CLIPPER_THROW_USER +#endif +#if defined(CLIPPER_TRY_USER) + #undef CLIPPER_TRY + #define CLIPPER_TRY CLIPPER_TRY_USER +#endif +#if defined(CLIPPER_CATCH_USER) + #undef CLIPPER_CATCH + #define CLIPPER_CATCH CLIPPER_CATCH_USER +#endif + namespace ClipperLib { static double const pi = 3.141592653589793238; @@ -898,7 +930,7 @@ void RangeTest(const IntPoint& Pt, bool& useFullRange) if (useFullRange) { if (Pt.X > hiRange || Pt.Y > hiRange || -Pt.X > hiRange || -Pt.Y > hiRange) - throw clipperException("Coordinate outside allowed range"); + CLIPPER_THROW(clipperException("Coordinate outside allowed range")); } else if (Pt.X > loRange|| Pt.Y > loRange || -Pt.X > loRange || -Pt.Y > loRange) { @@ -1046,10 +1078,10 @@ bool ClipperBase::AddPath(const Path &pg, PolyType PolyTyp, bool Closed) { #ifdef use_lines if (!Closed && PolyTyp == ptClip) - throw clipperException("AddPath: Open paths must be subject."); + CLIPPER_THROW(clipperException("AddPath: Open paths must be subject.")); #else if (!Closed) - throw clipperException("AddPath: Open paths have been disabled."); + CLIPPER_THROW(clipperException("AddPath: Open paths have been disabled.")); #endif int highI = (int)pg.size() -1; @@ -1062,7 +1094,7 @@ bool ClipperBase::AddPath(const Path &pg, PolyType PolyTyp, bool Closed) bool IsFlat = true; //1. Basic (first) edge initialization ... - try + CLIPPER_TRY { edges[1].Curr = pg[1]; RangeTest(pg[0], m_UseFullRange); @@ -1075,10 +1107,10 @@ bool ClipperBase::AddPath(const Path &pg, PolyType PolyTyp, bool Closed) InitEdge(&edges[i], &edges[i+1], &edges[i-1], pg[i]); } } - catch(...) + CLIPPER_CATCH(...) { delete [] edges; - throw; //range test fails + CLIPPER_THROW(); //range test fails } TEdge *eStart = &edges[0]; @@ -1442,7 +1474,7 @@ void ClipperBase::SwapPositionsInAEL(TEdge *Edge1, TEdge *Edge2) void ClipperBase::UpdateEdgeIntoAEL(TEdge *&e) { if (!e->NextInLML) - throw clipperException("UpdateEdgeIntoAEL: invalid call"); + CLIPPER_THROW(clipperException("UpdateEdgeIntoAEL: invalid call")); e->NextInLML->OutIdx = e->OutIdx; TEdge* AelPrev = e->PrevInAEL; @@ -1510,7 +1542,7 @@ bool Clipper::Execute(ClipType clipType, Paths &solution, { if( m_ExecuteLocked ) return false; if (m_HasOpenPaths) - throw clipperException("Error: PolyTree struct is needed for open path clipping."); + CLIPPER_THROW(clipperException("Error: PolyTree struct is needed for open path clipping.")); m_ExecuteLocked = true; solution.resize(0); m_SubjFillType = subjFillType; @@ -1560,7 +1592,7 @@ void Clipper::FixHoleLinkage(OutRec &outrec) bool Clipper::ExecuteInternal() { bool succeeded = true; - try { + CLIPPER_TRY { Reset(); m_Maxima = MaximaList(); m_SortedEdges = 0; @@ -1583,7 +1615,7 @@ bool Clipper::ExecuteInternal() InsertLocalMinimaIntoAEL(botY); } } - catch(...) + CLIPPER_CATCH(...) { succeeded = false; } @@ -2827,18 +2859,18 @@ void Clipper::ProcessHorizontal(TEdge *horzEdge) bool Clipper::ProcessIntersections(const cInt topY) { if( !m_ActiveEdges ) return true; - try { + CLIPPER_TRY { BuildIntersectList(topY); size_t IlSize = m_IntersectList.size(); if (IlSize == 0) return true; if (IlSize == 1 || FixupIntersectionOrder()) ProcessIntersectList(); else return false; } - catch(...) + CLIPPER_CATCH(...) { m_SortedEdges = 0; DisposeIntersectNodes(); - throw clipperException("ProcessIntersections error"); + CLIPPER_THROW(clipperException("ProcessIntersections error")); } m_SortedEdges = 0; return true; @@ -3002,7 +3034,7 @@ void Clipper::DoMaxima(TEdge *e) DeleteFromAEL(eMaxPair); } #endif - else throw clipperException("DoMaxima error"); + else CLIPPER_THROW(clipperException("DoMaxima error")); } //------------------------------------------------------------------------------