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authorBjörn Gustavsson <[email protected]>2011-02-17 14:14:43 +0100
committerBjörn Gustavsson <[email protected]>2011-08-16 08:58:49 +0200
commit87e639bef1cbe37f63fcd376ec17dc8fca77fe3f (patch)
treea6f1be537f1b27cd5de3e50ad293fc6b3181a5d8 /lib/compiler/src/beam_dict.erl
parentc846bf3f57937da34589c9071291a3be5ad0c4bc (diff)
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Include location information for line instructions in BEAM files
Diffstat (limited to 'lib/compiler/src/beam_dict.erl')
-rw-r--r--lib/compiler/src/beam_dict.erl53
1 files changed, 51 insertions, 2 deletions
diff --git a/lib/compiler/src/beam_dict.erl b/lib/compiler/src/beam_dict.erl
index c50ed28aa9..ee76623976 100644
--- a/lib/compiler/src/beam_dict.erl
+++ b/lib/compiler/src/beam_dict.erl
@@ -22,9 +22,10 @@
-export([new/0,opcode/2,highest_opcode/1,
atom/2,local/4,export/4,import/4,
- string/2,lambda/5,literal/2,
+ string/2,lambda/5,literal/2,line/2,fname/2,
atom_table/1,local_table/1,export_table/1,import_table/1,
- string_table/1,lambda_table/1,literal_table/1]).
+ string_table/1,lambda_table/1,literal_table/1,
+ line_table/1]).
-type label() :: non_neg_integer().
@@ -36,6 +37,9 @@
strings = <<>> :: binary(), %String pool
lambdas = [], %[{...}]
literals = dict:new() :: dict(), %Format: {Literal,Number}
+ fnames = gb_trees:empty() :: gb_tree(), %{Name,Index}
+ lines = gb_trees:empty() :: gb_tree(), %{{Fname,Line},Index}
+ num_lines = 0 :: non_neg_integer(), %Number of line instructions
next_import = 0 :: non_neg_integer(),
string_offset = 0 :: non_neg_integer(),
next_literal = 0 :: non_neg_integer(),
@@ -152,6 +156,36 @@ literal(Lit, #asm{literals=Tab0,next_literal=NextIndex}=Dict) ->
{NextIndex,Dict#asm{literals=Tab,next_literal=NextIndex+1}}
end.
+%% Returns the index for a line instruction (adding information
+%% to the location information table).
+-spec line(list(), bdict()) -> {non_neg_integer(), bdict()}.
+
+line([], #asm{num_lines=N}=Dict) ->
+ %% No location available. Return the special pre-defined
+ %% index 0.
+ {0,Dict#asm{num_lines=N+1}};
+line([{location,Name,Line}], #asm{lines=Lines0,num_lines=N}=Dict0) ->
+ {FnameIndex,Dict1} = fname(Name, Dict0),
+ case gb_trees:lookup({FnameIndex,Line}, Lines0) of
+ {value,Index} ->
+ {Index,Dict1#asm{num_lines=N+1}};
+ none ->
+ Index = gb_trees:size(Lines0) + 1,
+ Lines = gb_trees:insert({FnameIndex,Line}, Index, Lines0),
+ Dict = Dict1#asm{lines=Lines,num_lines=N+1},
+ {Index,Dict}
+ end.
+
+fname(Name, #asm{fnames=Fnames0}=Dict) ->
+ case gb_trees:lookup(Name, Fnames0) of
+ {value,Index} ->
+ {Index,Dict};
+ none ->
+ Index = gb_trees:size(Fnames0),
+ Fnames = gb_trees:insert(Name, Index, Fnames0),
+ {Index,Dict#asm{fnames=Fnames}}
+ end.
+
%% Returns the atom table.
%% atom_table(Dict) -> {LastIndex,[Length,AtomString...]}
-spec atom_table(bdict()) -> {non_neg_integer(), [[non_neg_integer(),...]]}.
@@ -219,6 +253,21 @@ literal_table(#asm{literals=Tab,next_literal=NumLiterals}) ->
my_term_to_binary(Term) ->
term_to_binary(Term, [{minor_version,1}]).
+%% Return the line table.
+-spec line_table(bdict()) ->
+ {non_neg_integer(), %Number of line instructions.
+ non_neg_integer(),[string()],
+ non_neg_integer(),[{non_neg_integer(),non_neg_integer()}]}.
+
+line_table(#asm{fnames=Fnames0,lines=Lines0,num_lines=NumLineInstrs}) ->
+ NumFnames = gb_trees:size(Fnames0),
+ Fnames1 = lists:keysort(2, gb_trees:to_list(Fnames0)),
+ Fnames = [Name || {Name,_} <- Fnames1],
+ NumLines = gb_trees:size(Lines0),
+ Lines1 = lists:keysort(2, gb_trees:to_list(Lines0)),
+ Lines = [L || {L,_} <- Lines1],
+ {NumLineInstrs,NumFnames,Fnames,NumLines,Lines}.
+
%% Search for binary string Str in the binary string pool Pool.
%% old_string(Str, Pool) -> none | Index
-spec old_string(binary(), binary()) -> 'none' | pos_integer().