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authorHans Bolinder <[email protected]>2014-05-13 08:31:19 +0200
committerHans Bolinder <[email protected]>2014-06-17 12:32:51 +0200
commit8498a35ce141c6e16feed198540b910b9475b2e2 (patch)
tree1f460c322886ce3f949fedfc753c59bd5973d5c2 /lib/stdlib
parente2961080386045f3e4ef59d9895b680ccdc4fbe4 (diff)
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[dialyzer] Fix handling of literal records
This ticket is about records in Erlang code, and when to check the fields against the (optional) types given when defining records. Dialyzer operates on the Erlang Core format, where there are no trace of records. The fix implemented is a Real Hack: Given the new option 'dialyzer' erl_expand_records marks the line number of records in a way that is undone by v3_core, which in turn inserts annotations that can be recognized by Dialyzer.
Diffstat (limited to 'lib/stdlib')
-rw-r--r--lib/stdlib/src/erl_expand_records.erl24
1 files changed, 18 insertions, 6 deletions
diff --git a/lib/stdlib/src/erl_expand_records.erl b/lib/stdlib/src/erl_expand_records.erl
index 57e768ba9d..42b02ade8f 100644
--- a/lib/stdlib/src/erl_expand_records.erl
+++ b/lib/stdlib/src/erl_expand_records.erl
@@ -1,7 +1,7 @@
%%
%% %CopyrightBegin%
%%
-%% Copyright Ericsson AB 2005-2012. All Rights Reserved.
+%% Copyright Ericsson AB 2005-2014. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
@@ -38,6 +38,8 @@
checked_ra=[] % successfully accessed records
}).
+-define(REC_OFFSET, 100000000). % A hundred millions. Also in v3_core.
+
-spec(module(AbsForms, CompileOptions) -> AbsForms when
AbsForms :: [erl_parse:abstract_form()],
CompileOptions :: [compile:option()]).
@@ -144,10 +146,11 @@ pattern({map_field_exact,Line,K0,V0}, St0) ->
%% {{struct,Line,Tag,TPs},TPsvs,St1};
pattern({record_index,Line,Name,Field}, St) ->
{index_expr(Line, Field, Name, record_fields(Name, St)),St};
-pattern({record,Line,Name,Pfs}, St0) ->
+pattern({record,Line0,Name,Pfs}, St0) ->
Fs = record_fields(Name, St0),
{TMs,St1} = pattern_list(pattern_fields(Fs, Pfs), St0),
- {{tuple,Line,[{atom,Line,Name} | TMs]},St1};
+ Line = record_offset(Line0, St1),
+ {{tuple,Line,[{atom,Line0,Name} | TMs]},St1};
pattern({bin,Line,Es0}, St0) ->
{Es1,St1} = pattern_bin(Es0, St0),
{{bin,Line,Es1},St1};
@@ -329,8 +332,9 @@ expr({map_field_exact,Line,K0,V0}, St0) ->
expr({record_index,Line,Name,F}, St) ->
I = index_expr(Line, F, Name, record_fields(Name, St)),
expr(I, St);
-expr({record,Line,Name,Is}, St) ->
- expr({tuple,Line,[{atom,Line,Name} |
+expr({record,Line0,Name,Is}, St) ->
+ Line = record_offset(Line0, St),
+ expr({tuple,Line,[{atom,Line0,Name} |
record_inits(record_fields(Name, St), Is)]},
St);
expr({record_field,Line,R,Name,F}, St) ->
@@ -582,8 +586,9 @@ strict_get_record_field(Line, R, {atom,_,F}=Index, Name, St0) ->
I = index_expr(F, Fs, 2),
P = record_pattern(2, I, Var, length(Fs)+1, Line, [{atom,Line,Name}]),
NLine = neg_line(Line),
+ RLine = record_offset(NLine, St),
E = {'case',NLine,R,
- [{clause,NLine,[{tuple,NLine,P}],[],[Var]},
+ [{clause,NLine,[{tuple,RLine,P}],[],[Var]},
{clause,NLine,[{var,NLine,'_'}],[],
[{call,NLine,{remote,NLine,
{atom,NLine,erlang},
@@ -961,3 +966,10 @@ opt_remove_2(A, _) -> A.
neg_line(L) ->
erl_parse:set_line(L, fun(Line) -> -abs(Line) end).
+
+record_offset(L, St) ->
+ case lists:member(annotate_records, St#exprec.compile) of
+ true when L >= 0 -> L+?REC_OFFSET;
+ true when L < 0 -> L-?REC_OFFSET;
+ false -> L
+ end.