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2010-06-03Add infrastructure for the -export_type() attributeKostis Sagonas
erl_lint has been updated so that it takes the new -export_type() attribute into account. This means: - do not complain about types which are defined but nowhere used in the module but exported to other modules - check that all types which are exported are indeed defined in the module - warn when there are multiple occurrences of exported types. In doing this change, I've also taken the liberty to introduce many types and specs for functions of this module and to do small cleanups here and there.
2010-06-03OTP-8665 epp bugHans Bolinder
The Erlang code preprocessor (epp) did not correctly handle premature end-of-input when defining macros. This bug, introduced in STDLIB 1.16, has been fixed.
2010-06-03Merge branch 'pan/otp_8579_autoimport_override' into devErlang/OTP
* origin/pan/otp_8579_autoimport_override: Update preloaded modules Update primary bootstrap Remove outcommented code from erl_lint Make port_command/3 auto-imported Remove (harmless) warnings about min/max in core applications Autoimport min/2 and max/2 Improve coverage of erl_int in testcases Change warning to error for nowarn_bif_clash compiler directive Add -compile({no_auto_import,[F/A]}) doc to compiler.xml Add some testcases to compiler to verify that overriding really happens Return nowarn_bif_clash functionality but with warning Teach erl_lint to better override BIFs with local functions and imports Teach compiler to override autoimport with import First prototype for local functions overriding autoimported OTP-8579 Local functions should override auto-imported Local and imported functions now override the autoimported BIFs when the names clash. The pre R14 behaviour was that autoimported BIFs would override local functions. To avoid that old programs change behaviour, the following will generate an error: Doing a call without explicit module name to a local function having a name clashing with the name of an autoimported BIF that was present (and autoimported) before OTP R14A Explicitly importing a function having a name clashing with the name of an autoimported BIF that was present (and autoimported) before OTP R14A Using any form of the old compiler directive nowarn_bif_clash If the BIF was added or autoimported in OTP R14A or later, overriding it with an import or a local function will only result in a warning, To resolve clashes, you can either use the explicit module name erlang to call the BIF, or you can remove the autoimport of that specific BIF by using the new compiler directive -compile({no_auto_import,[F/A]})., which makes all calls to the local or imported function without explicit module name pass without warnings or errors. The change makes it possible to add autoimported BIFs without breaking or silently changing old code in the future. However some current code ingeniously utilizing the old behaviour or the nowarn_bif_clash compiler directive, might need changing to be accepted by the compiler.
2010-06-03Merge branch 'pan/otp_8577_re_pattern_doc' into devErlang/OTP
* pan/otp_8577_re_pattern_doc: Add documentation of what part of a re mp() can be used for guard tests OTP-8577 Document re_pattern properties Some properties of a compiled re pattern are defined to allow for guard tests.
2010-06-02Remove outcommented code from erl_lintPatrik Nyblom
2010-06-02Make port_command/3 auto-importedPatrik Nyblom
2010-06-02Remove (harmless) warnings about min/max in core applicationsPatrik Nyblom
2010-06-02Autoimport min/2 and max/2Patrik Nyblom
2010-06-02Improve coverage of erl_int in testcasesPatrik Nyblom
2010-06-02Change warning to error for nowarn_bif_clash compiler directivePatrik Nyblom
2010-06-02Return nowarn_bif_clash functionality but with warningPatrik Nyblom
Wrote and changed some tests in stdlib:erl_lint_SUITE nowarn_bif_clash is obsoleted but will remove warnings and errors about bif clashes. The recommended way is to use no_auto_import directives instead. Hopefully erlang.erl is the only user in the world of nowarn_bif_clash.
2010-06-02Teach erl_lint to better override BIFs with local functions and importsPatrik Nyblom
Added only a few testcases in compiler:error_SUITE and guard_SUITE The new behaviour of warnings and errors when overriding autoimported BIF's: Bifs that were autoimported before R14 are dangerous because old code using them and overriding them in exports can start behaving differently. For newly added autoimports this can't happen to the new code that wants to (or dont want to) use them, why only warnings are added for the BIFs autoimported after the compilator change. Errors are issued only for code that could have worked in one way in R13 and now will behave in a different way. If overriding autoimport with local function: - if explicit -compile directive supresses autoimport -> no message else - if called from inside module - if pre R14 autoimported bif -> error else -> warning else -> no message If overriding autoimport with import directive - if explicit -compile directive supresses autoimport -> no message else (regardless of actual usage) - if pre R14 autoimported bif -> error else -> warning Calls of local functions or imports overriding autoimported functions (either post R14 or by using explicit -compile supressions of autoimport) always goes to the local function or the imported. The compileation errors are added to not let code like this silently and disastrously change its semantic (probably to an infinite loop) between R13 and R14: ---------- -module(m). -export([length/1]). length(X) -> ... Y = length(Z), .... ---------- The user has to select if he/she wants to call length in 'erlang' explicitly or if the overriding semantics is desired, in which case the -compile directive has to be used. -compile({no_auto_import,[F/A]}). Is added to allow to override the autoimports so that code gets unanbiguous. The directive will remove an autoimport even if there is no local function or import overriding, because any other behaviour would be inconsistent and confusing. record_info and module_info can never be overridden.
2010-06-02Teach compiler to override autoimport with importPatrik Nyblom
2010-06-02First prototype for local functions overriding autoimportedPatrik Nyblom
Import directives still not sorted out!
2010-06-02OTP-8664 Erlang parser augmented with operators for integer typesHans Bolinder
Expressions evaluating to integers can now be used in types and function specifications where hitherto only integers were allowed ("Erlang_Integer").
2010-06-02Merge branch 'jv/autoimport-binary_to_term_2' into devErlang/OTP
* jv/autoimport-binary_to_term_2: Change binary_to_term/2 to be auto-imported OTP-8671 jv/autoimport-binary_to_term_2 Now, binary_to_term/2 is auto-imported. This will cause a compile warning if and only if a module has got a local function with that name.
2010-06-02Evaluate element/2 at compile-time using type informationBjörn Gustavsson
The erl_expand_records compiler pass translates the following code: h(X) when X#r1.a =:= 1 -> ok. to (essentially): h({r1,V1,V2}=X) when element(2, X) =:= 1 -> ok. Since the guard can only be executed when the pattern matching has succeeded, we know that the second element in the tuple X must have been bound to V2. Thus we can eliminate the call to element/2 like this: h({r1,V1,V2}=X) when V1 =:= 1 -> ok.
2010-06-02erl_expand_records: Replace is_record() with matchingBjörn Gustavsson
The compiler currently generates better code for: f(#r1{}) -> r1; f(#r2{}) -> r2; f(#r3{}) -> r3. than for: g(X) when is_record(X, r1) -> r1; g(X) when is_record(X, r2) -> r2; g(X) when is_record(X, r3) -> r3. The compiler generates good code for pattern matching (as in f/1), but in g/1 there are no patterns to match, and the clause to be executed must be chosen by evaluating the guards sequentially until one succeeds. Make the compiler generate better code by replacing calls to is_record() with matching in the function head (basically, g/1 will automatically be rewritten to do pattern matching as in f/1). Note that this rewrite will also benefit code such as: h(X) when X#r1.a =:= 1 -> ok. because it would have been rewritten to: h(X) when (is_record(X, r1, 3) orelse fail) and (element(2, X) =:= 1) -> ok. which in turn will be rewritten to: h({r1,_,_}=X) when (true orelse fail) and (element(2, X) =:= 1) -> ok. (That will be further simplified in later compiler passes.)
2010-06-02Add documentation of what part of a re mp() can be used for guard testsPatrik Nyblom
2010-05-31OTP-8657 New Erlang scanner tokens: '..' and '...'Hans Bolinder
The Erlang scanner has been augmented with two new tokens: .. and ....
2010-05-27handle {global, term()} names in format_status/2Steve Vinoski
The gen_fsm, gen_server, and wx_object format_status implementations fail to handle global names of the form {global, term()} where term() is something other than an atom, pid, or list. Change these format_status implementations to treat names that are atoms, pids, or lists as before, but for all other terms, set the header property of the function return value to a tuple whose first element is a string describing the return value and whose second element is the name term. Add unit tests for gen_server and gen_fsm to verify sys:get_status calls work successfully for globally registered instances.
2010-05-24Change binary_to_term/2 to be auto-importedJayson Vantuyl
While binary_to_term/2 was added in R13B04, it wasn't auto-imported. This conformed to longstanding policy of not changing auto-imports between major versions. This patch contains changes to auto-import binary_to_term/2 to coincide with the release of R14.
2010-05-21Merge branch 'sv/format_status_error_info' into devErlang/OTP
* sv/format_status_error_info: Add support for the format_status callback to gen_event Extend format_status for gen_server/gen_fsm termination error logging OTP-8630 sv/format_status_error_info When a gen_server, gen_fsm process, or gen_event terminates abnormally, sometimes the text representation of the process state can occupy many lines of the error log, depending on the definition of the state term. A mechanism to trim out parts of the state from the log has been added (using a format_status/2 callback). See the documentation.
2010-05-21Correct typos in EEP-0031 implementationTuncer Ayaz
Signed-off-by: Tuncer Ayaz <[email protected]>
2010-05-20Merge branch 'pan/otp_8217_binary' into devErlang/OTP
* pan/otp_8217_binary: Add documentation for binary module Add more tests and make some go easier on small systems Correct Boyer More and trapping for longest_common_suffix Add longer timetrap to testcases and add binary to app file Add guard BIFs binary_part/2,3 Add binary:{encode,decode}_unsigned({1,2} Add referenced_byte_size/1 Add binary:list_to_bin/1 and binary:copy/1,2 Add bin_to_list/{1,2,3} Add binary:longest_common_prefix/longest_common_suffix Add binary:part to erl_bif_binary.c Move binary module bif's to erl_bif_binary.c Count reductions for process even when not trapping Add random compare testcase Teach BIF's binary:match/matches interrupting/restarting Teach binary.c the semantics to take longest instead of shortest match Initial commit of the binary EEP OTP-8217 Implement EEP31 The module binary from EEP31 (and EEP9) is implemented.
2010-05-19Merge branch 'dp/shell-line-editing' into devErlang/OTP
* dp/shell-line-editing: Readline-style line edit history OTP-8635 dp/shell-line-editing The shell's line editing has been improved to more resemble the behaviour of readline and other shells. (Thanks to Dave Peticolas)
2010-05-17Add documentation for binary modulePatrik Nyblom
Correct behaviour of copy/2 witn 0 copies.
2010-05-17Add more tests and make some go easier on small systemsPatrik Nyblom
Even more tests added to cover more error cases, some tests made easier on systems with small memories and timeouts made longer due to timetraps on solaris daily builds.
2010-05-17Correct Boyer More and trapping for longest_common_suffixPatrik Nyblom
Add testcases and clean up to get better code coverage.
2010-05-17Add longer timetrap to testcases and add binary to app filePatrik Nyblom
2010-05-17Add guard BIFs binary_part/2,3Patrik Nyblom
Add the gc_bif's to the VM. Add infrastructure for gc_bif's (guard bifs that can gc) with two and. three arguments in VM (loader and VM). Add compiler support for gc_bif with three arguments. Add compiler (and interpreter) support for new guard BIFs. Add testcases for new guard BIFs in compiler and emulator.
2010-05-17Add binary:{encode,decode}_unsigned({1,2}Patrik Nyblom
Add testcases for encode/decode_unsigned/1,2.
2010-05-17Add referenced_byte_size/1Patrik Nyblom
Add testcases for referenced_byte_size/1. Add failure tests for referenced_byte_size.
2010-05-17Add binary:list_to_bin/1 and binary:copy/1,2Patrik Nyblom
Add testcases for binary:list_to_bin/1 and binary:copy/1,2. Add reference implementation of list_to_bin/1.
2010-05-17Add bin_to_list/{1,2,3}Patrik Nyblom
Add testcases for bin_to_list. Teach binref.erl bin_to_list.
2010-05-17Add binary:longest_common_prefix/longest_common_suffixPatrik Nyblom
Add allcoator parameter to erts_get_aligned_binary_bytes_extra. Add testcases for the functions above. Add reference implementation for the functions above.
2010-05-17Add binary:part to erl_bif_binary.cPatrik Nyblom
Change name of the 'scope' option for binary:match/matches. Add split and replace to binary.erl. Cleanup comments etc in binary.erl and atom.names Add testcases for part, split, replace and scopes.
2010-05-17Count reductions for process even when not trappingPatrik Nyblom
Set loop factors to 10. Teach erts_debug:set_internal_state to limit loop factor for binary. Add random tests for matches and match with multiple searchstrings.
2010-05-17Add random compare testcasePatrik Nyblom
Fix heap-hole when trapping in binary.c Fix boyer more segfaulting when searchstring is longer than haystack
2010-05-17Teach binary.c the semantics to take longest instead of shortest matchPatrik Nyblom
Add testcase embryos and reference implementation. Change name of compile function according to EEP31.
2010-05-17Initial commit of the binary EEPPatrik Nyblom
2010-05-12timer: Update specs and apply tidier cleanupsKostis Sagonas
2010-05-12OTP-8629 stdlib: prepare erl_parse.yrl for future extensionHans Bolinder
2010-05-12OTP-8628 stdlib: correction lists(3)Hans Bolinder
The documentation of lists:keysort/2 states that the sort is stable.
2010-05-12Add support for the format_status callback to gen_eventSteve Vinoski
The gen_server and gen_fsm behaviors support the format_status callback to allow developers to specialize how callback module state appears within the return value of sys:get_status and within logged output resulting from abnormal process termination. This patch adds similar support to gen_event. Event handlers that export a format_status/2 function, which is an optional callback, and are registered with an event manager will now have their format_status callbacks invoked when sys:get_status is called on the event manager. The term returned from format_status for this case replaces the default handler state in the sys:get_status return value. This patch also extends gen_event to call an event handler's format_status function (if it exports one) should the handler terminate abnormally. The term returned from format_status is logged in place of the handler's state. This is intended to allow developers to control how much output is logged in the case of abnormal termination. The documentation is appropriately extended and new unit tests are added to cover the new gen_event format_status functionality.
2010-05-12Extend format_status for gen_server/gen_fsm termination error loggingSteve Vinoski
When a gen_server or gen_fsm process terminates abnormally, sometimes the text representation of the process state can occupy many lines of the error log, depending on the definition of the state term. Developers sometimes would like a way to trim out parts of the state from the log if those parts don't contribute to documenting the circumstances of the error, thereby helping to reduce the amount of logged output. Since the format_status callback can already format and specialize gen_server and gen_fsm state for inclusion in the term returned from sys:get_status, this patch extends format_status in a backward-compatible way to also be able to specialize the state logged for abnormal gen_server and gen_fsm termination, and includes new unit tests to verify the new functionality. This patch also eliminates the previous restriction that the status returned by format_status must be a list. It can now be any term. The documentation is extended to cover the new usage for format_status, and it's been improved to recommend a form for the normal case that allows the returned status to fit well with the rest of the term returned by sys:get_status. The documentation is clear that this form is only recommended, not required.
2010-05-12Merge branch 'bg/opt-receive' into devErlang/OTP
* bg/opt-receive: Test that gen_server:call/2,3 are fast even with a huge message queue erts: Add tests for the receive optimization Update primary bootstrap erts: Implement recv_mark/1 and recv_set/1 for real compiler tests: Cover the error handling code in beam_receive compiler test: Test optimization of receive statements Optimize selective receives in the presence of a large message queue Introduce the new recv_mark/1 and recv_mark/1 instructions Compile tests that communicate with R12 nodes with the r12 option Move p_run/2 to test_lib gen: Inline wait_resp_mon/2 to help the compiler optimize OTP-8623 bg/opt-receive reveive statements that can only read out a newly created reference are now specially optimized so that it will execute in constant time regardless of the number of messages in the receive queue for the process. That optimization will benefit calls to gen_server:call(). (See gen:do_call/4 for an example of a receive statement that will be optimized.)
2010-05-11Merge branch 'bg/beam_lib' into devErlang/OTP
* bg/beam_lib: Remove redundant includes Make beam_lib:cmp/2 stricter OTP-8625 bg/beam_lib The beam_lib:cmp/2 function now compares BEAM files in stricter way. The BEAM files will be considered different if there are any changes except in the compilation information ("CInf") chunk. beam_lib:cmp/2 used to ignore differences in the debug information (significant for Dialyzer) and other chunks that did not directly change the run-time behavior.
2010-05-11Test that gen_server:call/2,3 are fast even with a huge message queueBjörn Gustavsson
2010-05-11Compile tests that communicate with R12 nodes with the r12 optionBjörn Gustavsson
R12 nodes cannot load code that use the optimized receive that we are about to implement.