Merge pull request #128 from tfoleyNV/improve-failure-modes

Try to improve handling of failures during compilation

1 files changed, 29 insertions, 0 deletions

diff --git a/source/core/common.h b/source/core/common.h
index 25e85dc66..f0f6902d1 100644
--- a/source/core/common.h
+++ b/source/core/common.h
@@ -34,6 +34,35 @@ namespace Slang
 		v0 = _Move(v1);
 		v1 = _Move(tmp);
 	}
+
+#ifdef _MSC_VER
+#define SLANG_RETURN_NEVER __declspec(noreturn)
+#else
+#efine SLANG_RETURN_NEVER /* empty */
+#endif
+
+    SLANG_RETURN_NEVER void signalUnexpectedError(char const* message);
 }
 
+#define SLANG_UNEXPECTED(reason) \
+    Slang::signalUnexpectedError("unexpected: " reason)
+
+#define SLANG_UNIMPLEMENTED_X(what) \
+    Slang::signalUnexpectedError("unimplemented: " what)
+
+#define SLANG_UNREACHABLE(msg) \
+    Slang::signalUnexpectedError("unreachable code executed: " msg)
+
+#ifdef _DEBUG
+#define SLANG_EXPECT(VALUE, MSG) if(VALUE) {} else Slang::signalUnexpectedError("assertion failed: '" MSG "'")
+#define SLANG_ASSERT(VALUE) SLANG_EXPECT(VALUE, #VALUE)
+#else
+#define SLANG_EXPECT(VALUE, MSG) do {} while(0)
+#define SLANG_ASSERT(VALUE) do {} while(0)
+#endif
+
+#define SLANG_RELEASE_ASSERT(VALUE) if(VALUE) {} else Slang::signalUnexpectedError("assertion failed")
+#define SLANG_RELEASE_EXPECT(VALUE, WHAT) if(VALUE) {} else SLANG_UNEXPECTED(WHAT)
+
+
 #endif