2 % (c) The GRASP/AQUA Project, Glasgow University, 1992-1994
4 %************************************************************************
6 \section[SrcLoc]{The @SrcLoc@ type}
8 %************************************************************************
11 #include "HsVersions.h"
16 mkSrcLoc, mkSrcLoc2, -- the usual
17 mkUnknownSrcLoc, -- "I'm sorry, I haven't a clue"
18 mkBuiltinSrcLoc, -- something wired into the compiler
19 mkGeneratedSrcLoc, -- code generated within the compiler
25 import PprStyle ( PprStyle(..) )
29 %************************************************************************
31 \subsection[SrcLoc-SrcLocations]{Source-location information}
33 %************************************************************************
35 We keep information about the {\em definition} point for each entity;
36 this is the obvious stuff:
39 = SrcLoc FAST_STRING -- source file name
40 FAST_STRING -- line number in source file
41 | SrcLoc2 FAST_STRING -- same, but w/ an Int line#
45 Note that an entity might be imported via more than one route, and
46 there could be more than one ``definition point'' --- in two or more
47 \tr{.hi} files. We deemed it probably-unworthwhile to cater for this
50 %************************************************************************
52 \subsection[SrcLoc-access-fns]{Access functions for names}
54 %************************************************************************
59 mkSrcLoc2 x IBOX(y) = SrcLoc2 x y
60 mkUnknownSrcLoc = SrcLoc SLIT("<unknown>") SLIT("<unknown>")
61 mkBuiltinSrcLoc = SrcLoc SLIT("<built-into-the-compiler>") SLIT("<none>")
62 mkGeneratedSrcLoc = SrcLoc SLIT("<compiler-generated-code>") SLIT("<none>")
64 unpackSrcLoc (SrcLoc src_file src_line) = (src_file, src_line)
65 unpackSrcLoc (SrcLoc2 src_file src_line) = (src_file, _PK_ (show IBOX(src_line)))
68 %************************************************************************
70 \subsection[SrcLoc-instances]{Instance declarations for various names}
72 %************************************************************************
75 instance Outputable SrcLoc where
76 ppr PprForUser (SrcLoc src_file src_line)
77 = ppBesides [ ppChar '"', ppPStr src_file, ppPStr SLIT("\", line "), ppPStr src_line ]
79 ppr sty (SrcLoc src_file src_line)
80 = ppBesides [ppPStr SLIT("{-# LINE "), ppPStr src_line, ppSP,
81 ppChar '"', ppPStr src_file, ppPStr SLIT("\" #-}")]
83 ppr sty (SrcLoc2 src_file src_line)
84 = ppr sty (SrcLoc src_file (_PK_ (show IBOX(src_line))))