diff options
| -rw-r--r-- | lib/tools/doc/src/cover.xml | 9 | ||||
| -rw-r--r-- | lib/tools/src/cover.erl | 86 |
2 files changed, 57 insertions, 38 deletions
diff --git a/lib/tools/doc/src/cover.xml b/lib/tools/doc/src/cover.xml index 477871d6c3..beefd4ee8d 100644 --- a/lib/tools/doc/src/cover.xml +++ b/lib/tools/doc/src/cover.xml @@ -316,8 +316,13 @@ <c>compile_beam_directory/0,1</c>, it is assumed that the source code can be found in the same directory as the <c>.beam</c> file, in <c>../src</c> relative to that - directory, or at the source path in - <c>Module:module_info(compile)</c>. If no source code is found, + directory, or using the source path in + <c>Module:module_info(compile)</c>. When using the latter, + two paths are examined: first the one constructed by + joining <c>../src</c> and the tail of the compiled path + below a trailing <c>src</c> component, then the compiled + path itself. + If no source code is found, <c>{error,no_source_code_found}</c> is returned.</p> <p>HINT: It is possible to issue multiple analyse_to_file commands at the same time. </p> diff --git a/lib/tools/src/cover.erl b/lib/tools/src/cover.erl index 2579711dc7..dfcfc3675f 100644 --- a/lib/tools/src/cover.erl +++ b/lib/tools/src/cover.erl @@ -1951,47 +1951,61 @@ move_clauses([{M,F,A,C,_L}|Clauses]) -> move_clauses(Clauses); move_clauses([]) -> ok. - %% Given a .beam file, find the .erl file. Look first in same directory as -%% the .beam file, then in <beamdir>/../src +%% the .beam file, then in ../src, then in compile info. find_source(Module, File0) -> - case filename:rootname(File0,".beam") of - File0 -> - File0; - File -> - InSameDir = File++".erl", - case filelib:is_file(InSameDir) of - true -> - InSameDir; - false -> - Dir = filename:dirname(File), - Mod = filename:basename(File), - InDotDotSrc = filename:join([Dir,"..","src",Mod++".erl"]), - case filelib:is_file(InDotDotSrc) of - true -> - InDotDotSrc; - false -> - find_source_from_module(Module, File0) - end - end + try + Root = filename:rootname(File0, ".beam"), + Root == File0 andalso throw(File0), %% not .beam + %% Look for .erl in pwd. + File = Root ++ ".erl", + throw_file(File), + %% Not in pwd: look in ../src. + BeamDir = filename:dirname(File), + Base = filename:basename(File), + throw_file(filename:join([BeamDir, "..", "src", Base])), + %% Not in ../src: look for source path in compile info, but + %% first look relative the beam directory. + Info = lists:keyfind(source, 1, Module:module_info(compile)), + false == Info andalso throw({beam, File0}), %% stripped + {source, SrcFile} = Info, + throw_file(splice(BeamDir, SrcFile)), %% below ../src + throw_file(SrcFile), %% or absolute + %% No success means that source is either not under ../src or + %% its relative path differs from that of compile info. (For + %% example, compiled under src/x but installed under src/y.) + %% An option to specify an arbitrary source path explicitly is + %% probably a better solution than either more heuristics or a + %% potentially slow filesystem search. + {beam, File0} + catch + Path -> Path end. -%% In case we can't find the file from the given .beam, -%% we try to get the information directly from the module source -find_source_from_module(Module, File) -> - Compile = Module:module_info(compile), - case lists:keyfind(source, 1, Compile) of - {source, Path} -> - case filelib:is_file(Path) of - true -> - Path; - false -> - {beam, File} - end; - false -> - {beam, File} - end. +throw_file(Path) -> + false /= Path andalso filelib:is_file(Path) andalso throw(Path). + +%% Splice the tail of a source path, starting from the last "src" +%% component, onto the parent of a beam directory, or return false if +%% no "src" component is found. +%% +%% Eg. splice("/path/to/app-1.0/ebin", "/compiled/path/to/app/src/x/y.erl") +%% --> "/path/to/app-1.0/ebin/../src/x/y.erl" +%% +%% This handles the case of source in subdirectories of ../src with +%% beams that have moved since compilation. +%% +splice(BeamDir, SrcFile) -> + case lists:splitwith(fun(C) -> C /= "src" end, revsplit(SrcFile)) of + {T, [_|_]} -> %% found src component + filename:join([BeamDir, "..", "src" | lists:reverse(T)]); + {_, []} -> %% or not + false + end. + +revsplit(Path) -> + lists:reverse(filename:split(Path)). do_parallel_analysis(Module, Analysis, Level, Loaded, From, State) -> analyse_info(Module,State#main_state.imported), |