mg_usages :: ![Usage], -- Version info for what it needed
mg_rdr_env :: !GlobalRdrEnv, -- Top-level lexical environment
- mg_fix_env :: !FixityEnv, -- Fixity env, for things declared in
- -- this module
-
- mg_inst_env :: InstEnv, -- Class instance enviroment fro
- -- *home-package* modules (including
- -- this one); c.f. tcg_inst_env
- mg_fam_inst_env :: FamInstEnv, -- Type-family instance enviroment
- -- for *home-package* modules (including
- -- this one); c.f. tcg_fam_inst_env
+ -- These fields all describe the things **declared in this module**
+ mg_fix_env :: !FixityEnv, -- Fixities
mg_types :: !TypeEnv,
mg_insts :: ![Instance], -- Instances
mg_fam_insts :: ![FamInst], -- Instances
mg_deprecs :: !Deprecations, -- Deprecations declared in the module
mg_hpc_info :: !HpcInfo, -- info about coverage tick boxes
mg_modBreaks :: !ModBreaks,
- mg_vect_info :: !VectInfo -- Pool of vectorised declarations
+ mg_vect_info :: !VectInfo, -- Pool of vectorised declarations
+
+ -- The next two fields are unusual, because they give instance
+ -- environments for *all* modules in the home package, including
+ -- this module, rather than for *just* this module.
+ -- Reason: when looking up an instance we don't want to have to
+ -- look at each module in the home package in turn
+ mg_inst_env :: InstEnv, -- Class instance enviroment fro
+ -- *home-package* modules (including
+ -- this one); c.f. tcg_inst_env
+ mg_fam_inst_env :: FamInstEnv -- Type-family instance enviroment
+ -- for *home-package* modules (including
+ -- this one); c.f. tcg_fam_inst_env
}
-- The ModGuts takes on several slightly different forms:
-- "foreign exported" functions
[FastString] -- Headers that need to be included
-- into C code generated for this module
- [Id] -- Foreign-exported binders
- -- we have to generate code to register these
\end{code}
vectInfoVar :: VarEnv (Var , Var ), -- (f, f_v) keyed on f
vectInfoTyCon :: NameEnv (TyCon , TyCon), -- (T, T_v) keyed on T
vectInfoDataCon :: NameEnv (DataCon, DataCon), -- (C, C_v) keyed on C
- vectInfoPADFun :: NameEnv (TyCon , Var), -- (C, paT) keyed on T
+ vectInfoPADFun :: NameEnv (TyCon , Var), -- (T_v, paT) keyed on T_v
vectInfoIso :: NameEnv (TyCon , Var) -- (T, isoT) keyed on T
}
-- all of this is always tidy, even in ModGuts
-- An array giving the source span of each breakpoint.
, modBreaks_vars :: !(Array BreakIndex [OccName])
-- An array giving the names of the free variables at each breakpoint.
+ , modBreaks_decls:: !(Array BreakIndex SrcSpan)
+ -- An array giving the span of the enclosing expression
}
emptyModBreaks :: ModBreaks
-- Todo: can we avoid this?
, modBreaks_locs = array (0,-1) []
, modBreaks_vars = array (0,-1) []
+ , modBreaks_decls= array (0,-1) []
}
\end{code}