+#else
+mkBreakpointExpr = undefined -- A stage1 ghc doesn't care about breakpoints
+#endif
+
+debug_enabled :: DsM Bool
+#if defined(GHCI) && defined(DEBUGGER)
+debug_enabled = do
+ debugging <- doptDs Opt_Debugging
+ b_enabled <- breakpoints_enabled
+ return (debugging && b_enabled)
+#else
+debug_enabled = return False
+#endif
+
+maybeInsertBreakpoint :: LHsExpr Id -> Type -> DsM (LHsExpr Id)
+--maybeInsertBreakpoint e | pprTrace("insertBreakpoint at" (ppr e) False = undefined
+
+isInstrumentationSpot (L loc e) = do
+ ghcmode <- getGhcModeDs
+ instrumenting <- debug_enabled
+ return$ instrumenting
+ && isGoodSrcSpan loc -- Avoids 'derived' code
+ && (not$ isRedundant e)
+
+isRedundant HsLet {} = True
+isRedundant HsDo {} = True
+isRedundant HsCase {} = True
+isRedundant _ = False
+
+dynBreakpoint :: SrcSpan -> DsM (LHsExpr Id)
+dynBreakpoint loc | not (isGoodSrcSpan loc) =
+ pprPanic "dynBreakpoint" (ppr loc)
+dynBreakpoint loc = do
+ let autoBreakpoint = Id.mkGlobalId VanillaGlobal breakpointAutoName
+ breakpointAutoTy vanillaIdInfo
+ dflags <- getDOptsDs
+ ioToIOEnv$ debugTraceMsg dflags 3 (text "Breakpoint inserted at " <> ppr loc)
+ return$ L loc (HsVar autoBreakpoint)
+ where breakpointAutoTy = (ForAllTy alphaTyVar
+ (FunTy (TyVarTy alphaTyVar)
+ (TyVarTy alphaTyVar)))
+
+-- Records a breakpoint site and returns the site number
+recordBkpt :: SrcLoc -> DsM (Int)
+--recordBkpt | trace "recordBkpt" False = undefined
+recordBkpt loc = do
+ sites_var <- getBkptSitesDs
+ sites <- ioToIOEnv$ readIORef sites_var
+ let site = length sites + 1
+ let coords = (srcLocLine loc, srcLocCol loc)
+ ioToIOEnv$ writeIORef sites_var ((site, coords) : sites)
+ return site