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2023-10-30[lldb] Part 2 of 2 - Refactor `CommandObject::DoExecute(...)` return `void` ↵Pete Lawrence
(not `bool`) (#69991) [lldb] Part 2 of 2 - Refactor `CommandObject::DoExecute(...)` to return `void` instead of ~~`bool`~~ Justifications: - The code doesn't ultimately apply the `true`/`false` return values. - The methods already pass around a `CommandReturnObject`, typically with a `result` parameter. - Each command return object already contains: - A more precise status - The error code(s) that apply to that status Part 1 refactors the `CommandObject::Execute(...)` method. - See [https://github.com/llvm/llvm-project/pull/69989](https://github.com/llvm/llvm-project/pull/69989) rdar://117378957
2023-05-18[lldb] Delay removal of persistent resultsDave Lee
Follow up to "Suppress persistent result when running po" (D144044). This change delays removal of the persistent result until after `Dump` has been called. In doing so, the persistent result is available for the purpose of getting its object description. In the original change, the persistent result removal happens indirectly, by setting `EvaluateExpressionOptions::SetSuppressPersistentResult`. In practice this has worked, however this exposed a latent bug in swift-lldb. The subtlety, and the bug, depend on when the persisteted result variable is removed. When the result is removed via `SetSuppressPersistentResult`, it happens within the call to `Target::EvaluateExpression`. That is, by the time the call returns, the persistent result is already removed. The issue occurs shortly thereafter, when `ValueObject::Dump` is called, it cannot make use of the persistent result variable (instead it uses the `ValueObjectConstResult`). In swift-lldb, this causes an additional expression evaluation to happen. It first tries an expression that reference `$R0` etc, but that always fails because `$R0` is removed. The fallback to this failure does work most of the time, but there's at least one bug involving imported Clang types. Differential Revision: https://reviews.llvm.org/D150619
2023-03-21Recommit [lldb] Change dwim-print to default to disabled persistent resultsDave Lee
Change `dwim-print` to now disable persistent results by default, unless requested by the user with the `--persistent-result` flag. Ex: ``` (lldb) dwim-print 1 + 1 (int) 2 (lldb) dwim-print --persistent-result on -- 1 + 1 (int) $0 = 2 ``` Users who wish to enable persistent results can make and use an alias that includes `--persistent-result on`. Updates: To recommit this, both TestPersistentResult.py and TestPAlias.py needed to be updated, as well as the changes in D146230. Differential Revision: https://reviews.llvm.org/D145609
2023-03-15Revert "[lldb] Change dwim-print to default to disabled persistent results"Dave Lee
This reverts commit 8bad4ae679df6fc7dbd016dccbd3da34206e836b.
2023-03-15[lldb] Change dwim-print to default to disabled persistent resultsDave Lee
Change `dwim-print` to now disable persistent results by default, unless requested by the user with the `--persistent-result` flag. Ex: ``` (lldb) dwim-print 1 + 1 (int) 2 (lldb) dwim-print --persistent-result on -- 1 + 1 (int) $0 = 2 ``` Users who wish to enable persistent results can make and use an alias that includes `--persistent-result on`. Differential Revision: https://reviews.llvm.org/D145609
2023-02-17[lldb] Make persisting result variables configurableDave Lee
Context: The `expression` command uses artificial variables to store the expression result. This result variable is unconditionally kept around after the expression command has completed. These variables are known as persistent results. These are the variables `$0`, `$1`, etc, that are displayed when running `p` or `expression`. This change allows users to control whether result variables are persisted, by introducing a `--persistent-result` flag. This change keeps the current default behavior, persistent results are created by default. This change gives users the ability to opt-out by re-aliasing `p`. For example: ``` command unalias p command alias p expression --persistent-result false -- ``` For consistency, this flag is also adopted by `dwim-print`. Of note, if asked, `dwim-print` will create a persistent result even for frame variables. Differential Revision: https://reviews.llvm.org/D144230
2023-02-17[lldb] Add expression command options in dwim-printDave Lee
Adopt `expression`'s options in `dwim-print`. This is primarily added to support the `--language`/`-l` flag. Differential Revision: https://reviews.llvm.org/D144114
2020-03-23[lldb] Mark expressions that couldn't be parsed or executed as failed ↵Raphael Isemann
expressions Summary: LLDB keeps statistics of how many expression evaluations are 'successful' and 'failed' which are updated after each expression evaluation (assuming statistics are enabled). From what I understand the idea is that this could be used to define how well LLDB's expression evaluator is working. Currently all expressions are considered successful unless the user passes an explicit positive element counting to the expression command (with the `-Z` flag) and then passes an expression that successfully evaluates to a type that doesn't support element counting. Expressions that fail to parse, execute or any other outcome are considered successful at the moment which means we nearly always have a 100% expression evaluation success rate. This patch makes that expressions that fail to parse or execute to count as failed expressions. We can't know whether the expression failed because of an user error of because LLDB couldn't correctly parse/compile it, but I would argue that this is still an improvement. Assuming that the percentage of valid user expressions stays mostly constant over time (which seems like a reasonable assumption), then this way we can still see if we are doing relatively better/worse from release to release. Reviewers: davide, aprantl, JDevlieghere Reviewed By: aprantl Subscribers: abidh Differential Revision: https://reviews.llvm.org/D76280
2020-03-17[lldb] Ptrs->refs in CommandObjectExpression::EvaluateExpression parametersRaphael Isemann
The error_stream and result parameter were inconsistently checked for being null, so we might as well make them references instead of crashing in case someone passes a nullptr and hits one of the code paths that are currently not doing a nullptr check on those parameters. Also change output_stream for consistency.
2020-03-06[lldb][NFC] Refactor our option generation out of EvaluateExpressionRaphael Isemann
2020-02-17[lldb] Update header guards to be consistent and compliant with LLVM (NFC)Jonas Devlieghere
LLDB has a few different styles of header guards and they're not very consistent because things get moved around or copy/pasted. This patch unifies the header guards across LLDB and converts everything to match LLVM's style. Differential revision: https://reviews.llvm.org/D74743
2019-12-16[lldb][NFC] Remove unnecessary includes in source/CommandsRaphael Isemann
Summary: This removes most of unnecessary includes in the `source/Commands` directory. This was generated by IWYU and a script that fixed all the bogus reports from IWYU. Patch is tested on Linux and macOS. Reviewers: JDevlieghere Reviewed By: JDevlieghere Subscribers: krytarowski, lldb-commits Tags: #lldb Differential Revision: https://reviews.llvm.org/D71489
2019-08-22[lldb][NFC] Remove WordComplete mode, make result array indexed from 0 and ↵Raphael Isemann
remove any undocumented/redundant return values Summary: We still have some leftovers of the old completion API in the internals of LLDB that haven't been replaced by the new CompletionRequest. These leftovers are: * The return values (int/size_t) in all completion functions. * Our result array that starts indexing at 1. * `WordComplete` mode. I didn't replace them back then because it's tricky to figure out what exactly they are used for and the completion code is relatively untested. I finally got around to writing more tests for the API and understanding the semantics, so I think it's a good time to get rid of them. A few words why those things should be removed/replaced: * The return values are really cryptic, partly redundant and rarely documented. They are also completely ignored by Xcode, so whatever information they contain will end up breaking Xcode's completion mechanism. They are also partly impossible to even implement as we assign negative values special meaning and our completion API sometimes returns size_t. Completion functions are supposed to return -2 to rewrite the current line. We seem to use this in some untested code path to expand the history repeat character to the full command, but I haven't figured out why that doesn't work at the moment. Completion functions return -1 to 'insert the completion character', but that isn't implemented (even though we seem to activate this feature in LLDB sometimes). All positive values have to match the number of results. This is obviously just redundant information as the user can just look at the result list to get that information (which is what Xcode does). * The result array that starts indexing at 1 is obviously unexpected. The first element of the array is reserved for the common prefix of all completions (e.g. "foobar" and "footar" -> "foo"). The idea is that we calculate this to make the life of the API caller easier, but obviously forcing people to have 1-based indices is not helpful (or even worse, forces them to manually copy the results to make it 0-based like Xcode has to do). * The `WordComplete` mode indicates that LLDB should enter a space behind the completion. The idea is that we let the top-level API know that we just provided a full completion. Interestingly we `WordComplete` is just a single bool that somehow represents all N completions. And we always provide full completions in LLDB, so in theory it should always be true. The only use it currently serves is providing redundant information about whether we have a single definitive completion or not (which we already know from the number of results we get). This patch essentially removes `WordComplete` mode and makes the result array indexed from 0. It also removes all return values from all internal completion functions. The only non-redundant information they contain is about rewriting the current line (which is broken), so that functionality was moved to the CompletionRequest API. So you can now do `addCompletion("blub", "description", CompletionMode::RewriteLine)` to do the same. For the SB API we emulate the old behaviour by making the array indexed from 1 again with the common prefix at index 0. I didn't keep the special negative return codes as we either never sent them before (e.g. -2) or we didn't even implement them in the Editline handler (e.g. -1). I tried to keep this patch minimal and I'm aware we can probably now even further simplify a bunch of related code, but I would prefer doing this in follow-up NFC commits Reviewers: JDevlieghere Reviewed By: JDevlieghere Subscribers: arphaman, abidh, lldb-commits Tags: #lldb Differential Revision: https://reviews.llvm.org/D66536 llvm-svn: 369624
2019-05-23[lldb] NFC modernize codebase with modernize-use-nullptrKonrad Kleine
Summary: NFC = [[ https://llvm.org/docs/Lexicon.html#nfc | Non functional change ]] This commit is the result of modernizing the LLDB codebase by using `nullptr` instread of `0` or `NULL`. See https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-nullptr.html for more information. This is the command I ran and I to fix and format the code base: ``` run-clang-tidy.py \ -header-filter='.*' \ -checks='-*,modernize-use-nullptr' \ -fix ~/dev/llvm-project/lldb/.* \ -format \ -style LLVM \ -p ~/llvm-builds/debug-ninja-gcc ``` NOTE: There were also changes to `llvm/utils/unittest` but I did not include them because I felt that maybe this library shall be updated in isolation somehow. NOTE: I know this is a rather large commit but it is a nobrainer in most parts. Reviewers: martong, espindola, shafik, #lldb, JDevlieghere Reviewed By: JDevlieghere Subscribers: arsenm, jvesely, nhaehnle, hiraditya, JDevlieghere, teemperor, rnkovacs, emaste, kubamracek, nemanjai, ki.stfu, javed.absar, arichardson, kbarton, jrtc27, MaskRay, atanasyan, dexonsmith, arphaman, jfb, jsji, jdoerfert, lldb-commits, llvm-commits Tags: #lldb, #llvm Differential Revision: https://reviews.llvm.org/D61847 llvm-svn: 361484
2019-04-10[NFC] Remove ASCII lines from commentsJonas Devlieghere
A lot of comments in LLDB are surrounded by an ASCII line to delimit the begging and end of the comment. Its use is not really consistent across the code base, sometimes the lines are longer, sometimes they are shorter and sometimes they are omitted. Furthermore, it looks kind of weird with the 80 column limit, where the comment actually extends past the line, but not by much. Furthermore, when /// is used for Doxygen comments, it looks particularly odd. And when // is used, it incorrectly gives the impression that it's actually a Doxygen comment. I assume these lines were added to improve distinguishing between comments and code. However, given that todays editors and IDEs do a great job at highlighting comments, I think it's worth to drop this for the sake of consistency. The alternative is fixing all the inconsistencies, which would create a lot more churn. Differential revision: https://reviews.llvm.org/D60508 llvm-svn: 358135
2019-01-19Update the file headers across all of the LLVM projects in the monorepoChandler Carruth
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
2018-11-11Remove header grouping comments.Jonas Devlieghere
This patch removes the comments grouping header includes. They were added after running IWYU over the LLDB codebase. However they add little value, are often outdates and burdensome to maintain. llvm-svn: 346626
2018-09-28Clean-up usage of OptionDefinition arraysTatyana Krasnukha
Differential Revision: https://reviews.llvm.org/D52604 llvm-svn: 343348
2018-08-30Added initial code completion support for the `expr` commandRaphael Isemann
Summary: This patch adds initial code completion support for the `expr` command. We now have a completion handler in the expression CommandObject that essentially just attempts to parse the given user expression with Clang with an attached code completion consumer. We filter and prepare the code completions provided by Clang and send them back to the completion API. The current completion is limited to variables that are in the current scope. This includes local variables and all types used by local variables. We however don't do any completion of symbols that are not used in the local scope (or in some other way already in the ASTContext). This is partly because there is not yet any code that manually searches for additiona information in the debug information. Another cause is that for some reason the existing code for loading these additional symbols when requested by Clang doesn't seem to work. This will be fixed in a future patch. Reviewers: jingham, teemperor Reviewed By: teemperor Subscribers: labath, aprantl, JDevlieghere, friss, lldb-commits Differential Revision: https://reviews.llvm.org/D48465 llvm-svn: 341086
2018-07-12Get rid of the C-string parameter in DoExecuteRaphael Isemann
Summary: This patch gets rid of the C-string parameter in the RawCommandObject::DoExecute function, making the code simpler and less memory unsafe. There seems to be a assumption in some command objects that this parameter could be a nullptr, but from what I can see the rest of the API doesn't actually allow this (and other command objects and related code pieces dereference this parameter without any checks). Especially CommandObjectRegexCommand has error handling code for a nullptr that is now gone. Reviewers: davide, jingham, teemperor Reviewed By: teemperor Subscribers: jingham, lldb-commits Differential Revision: https://reviews.llvm.org/D49207 llvm-svn: 336955
2017-05-12Rename Error -> Status.Zachary Turner
This renames the LLDB error class to Status, as discussed on the lldb-dev mailing list. A change of this magnitude cannot easily be done without find and replace, but that has potential to catch unwanted occurrences of common strings such as "Error". Every effort was made to find all the obvious things such as the word "Error" appearing in a string, etc, but it's possible there are still some lingering occurences left around. Hopefully nothing too serious. llvm-svn: 302872
2016-11-12Make Options::SetOptionValue take a StringRef.Zachary Turner
llvm-svn: 286723
2016-09-23Update OptionGroup::SetValue to take StringRef.Zachary Turner
Then deal with all the fallout. Differential Revision: https://reviews.llvm.org/D24847 llvm-svn: 282265
2016-09-22Convert option tables to ArrayRefs.Zachary Turner
This change is very mechanical. All it does is change the signature of `Options::GetDefinitions()` and `OptionGroup:: GetDefinitions()` to return an `ArrayRef<OptionDefinition>` instead of a `const OptionDefinition *`. In the case of the former, it deletes the sentinel entry from every table, and in the case of the latter, it removes the `GetNumDefinitions()` method from the interface. These are no longer necessary as `ArrayRef` carries its own length. In the former case, iteration was done by using a sentinel entry, so there was no knowledge of length. Because of this the individual option tables were allowed to be defined below the corresponding class (after all, only a pointer was needed). Now, however, the length must be known at compile time to construct the `ArrayRef`, and as a result it is necessary to move every option table before its corresponding class. This results in this CL looking very big, but in terms of substance there is not much here. Differential revision: https://reviews.llvm.org/D24834 llvm-svn: 282188
2016-09-06*** This commit represents a complete reformatting of the LLDB source codeKate Stone
*** to conform to clang-format’s LLVM style. This kind of mass change has *** two obvious implications: Firstly, merging this particular commit into a downstream fork may be a huge effort. Alternatively, it may be worth merging all changes up to this commit, performing the same reformatting operation locally, and then discarding the merge for this particular commit. The commands used to accomplish this reformatting were as follows (with current working directory as the root of the repository): find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} + find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ; The version of clang-format used was 3.9.0, and autopep8 was 1.2.4. Secondly, “blame” style tools will generally point to this commit instead of a meaningful prior commit. There are alternatives available that will attempt to look through this change and find the appropriate prior commit. YMMV. llvm-svn: 280751
2016-08-11Decoupled Options from CommandInterpreter.Todd Fiala
Options used to store a reference to the CommandInterpreter instance in the base Options class. This made it impossible to parse options independent of a CommandInterpreter. This change removes the reference from the base class. Instead, it modifies the options-parsing-related methods to take an ExecutionContext pointer, which the options may inspect if they need to do so. Closes https://reviews.llvm.org/D23416 Reviewers: clayborg, jingham llvm-svn: 278440
2016-05-12[LLDB] Added support for PHI nodes to IR interpreterMarianne Mailhot-Sarrasin
This allows expressions such as 'i == 1 || i == 2` to be executed using the IR interpreter, instead of relying on JIT code injection (which may not be available on some platforms). Patch by cameron314 Differential Revision: http://reviews.llvm.org/D19124 llvm-svn: 269340
2016-05-09Fixed multiline expressions, and removed some dead code.Sean Callanan
IOHandlerLinesUpdated() does nothing, and IOHandlerIsInputComplete should be implemented but isn't. This means that multiline expressions don't work. This patch fixes that. Test case to follow in the next commit. llvm-svn: 268970
2016-03-29Figure out what the fixed expression is, and print it. Added another target ↵Jim Ingham
setting to quietly apply fixits for those who really trust clang's fixits. Also, moved the retry into ClangUserExpression::Evaluate, where I can make a whole new ClangUserExpression to do the work. Reusing any of the parts of a UserExpression in situ isn't supported at present. <rdar://problem/25351938> llvm-svn: 264793
2016-03-28Expose top-level Clang expressions via the command line and the API.Sean Callanan
Top-level Clang expressions are expressions that act as new translation units, and define their own symbols. They do not have function wrappers like regular expressions do, and declarations are persistent regardless of use of the dollar sign in identifiers. Names defined by these are given priority over all other symbol lookups. This patch adds a new expression option, '-p' or '--top-level,' which controls whether the expression is treated this way. It also adds a flag controlling this to SBExpressionOptions so that this API is usable externally. It also adds a test that validates that this works. (The test requires a fix to the Clang AST importer which I will be committing shortly.) <rdar://problem/22864976> llvm-svn: 264662
2016-03-25Use Clang's FixItHints to correct expressions with "trivial" mistakes (e.g. ↵Jim Ingham
"." for "->".) This feature is controlled by an expression command option, a target property and the SBExpressionOptions setting. FixIt's are only applied to UserExpressions, not UtilityFunctions, those you have to get right when you make them. This is just a first stage. At present the fixits are applied silently. The next step is to tell the user about the applied fixit. <rdar://problem/25351938> llvm-svn: 264379
2015-10-20Added support to the expression command for dropping into the REPL at will.Sean Callanan
"expr -r" does this. It also returns to a REPL if the LLDB command interpreter is neseted inside it, for example in cases where a REPL command resulted in a breakpoint being hit or a crash. llvm-svn: 250780
2015-09-02Fix Clang-tidy misc-use-override warnings in source/Commands headers, unify ↵Pavel Labath
closing inclusion guards patch by Eugene Zelenko. Differential Revision: http://reviews.llvm.org/D12207 llvm-svn: 246628
2015-07-25Specify a language to use when parsing expressions.Dawn Perchik
This patch adds the option -l/--language to the expression command, for use when setting the language options or choosing an alternate FE. If not specified, the target.language setting is used. Reviewed by: clayborg Subscribers: lldb-commits Differential Revision: http://reviews.llvm.org/D11447 llvm-svn: 243187
2014-03-13Allow a multi-line expression to follow expression commands with options ↵Greg Clayton
when there is no expression following the option terminating “—“. llvm-svn: 203872
2014-02-11When a multiline expression produces output, the multi-line help message is ↵Greg Clayton
printed twice. <rdar://problem/16031890> llvm-svn: 201171
2014-01-27Merging the iohandler branch back into main. Greg Clayton
The many many benefits include: 1 - Input/Output/Error streams are now handled as real streams not a push style input 2 - auto completion in python embedded interpreter 3 - multi-line input for "script" and "expression" commands now allow you to edit previous/next lines using up and down arrow keys and this makes multi-line input actually a viable thing to use 4 - it is now possible to use curses to drive LLDB (please try the "gui" command) We will need to deal with and fix any buildbot failures and tests and arise now that input/output and error are correctly hooked up in all cases. llvm-svn: 200263
2013-11-04Added a "--debug" option to the "expression" command. Greg Clayton
Cleaned up ClangUserExpression::Evaluate() to have only one variant that takes a "const EvaluateExpressionOptions& options" instead of taking many arguments. The "--debug" option is designed to allow you to debug your expression by stopping at the first instruction (it enables --ignore-breakpoints=true and --unwind-on-error=false) and allowing you to step through your JIT code. It needs to be more integrated with the thread plan, so I am checking this in so Jim Ingham can make it happen. llvm-svn: 194009
2013-09-30<rdar://problem/14393032>Enrico Granata
DumpValueObject() 2.0 This checkin restores pre-Xcode5 functionality to the "po" (expr -O) command: - expr now has a new --description-verbosity (-v) argument, which takes either compact or full as a value (-v is the same as -vfull) When the full mode is on, "po" will show the extended output with type name, persistent variable name and value, as in (lldb) expr -O -v -- foo (id) $0 = 0x000000010010baf0 { 1 = 2; 2 = 3; } When -v is omitted, or -vcompact is passed, the Xcode5-style output will be shown, as in (lldb) expr -O -- foo { 1 = 2; 2 = 3; } - for a non-ObjectiveC object, LLDB will still try to retrieve a summary and/or value to display (lldb) po 5 5 -v also works in this mode (lldb) expr -O -vfull -- 5 (int) $4 = 5 On top of that, this is a major refactoring of the ValueObject printing code. The functionality is now factored into a ValueObjectPrinter class for easier maintenance in the future DumpValueObject() was turned into an instance method ValueObject::Dump() which simply calls through to the printer code, Dump_Impl has been removed Test case to follow llvm-svn: 191694
2013-01-15Separated the "expr --unwind-on-error" behavior into two parts, actual ↵Jim Ingham
errors (i.e. crashes) which continue to be controlled by the --unwind-on-error flag, and --ignore-breakpoint which separately controls behavior when a called function hits a breakpoint. For breakpoints, we don't unwind, we either stop, or ignore the breakpoint, which makes more sense. Also make both these behaviors globally settable through "settings set". Also handle the case where a breakpoint command calls code that ends up re-hitting the breakpoint. We were recursing and crashing. Now we just stop without calling the second command. <rdar://problem/12986644> <rdar://problem/9119325> llvm-svn: 172503
2013-01-09<rdar://problem/12028723>Enrico Granata
Adding useful formatting options to the expression (expr) command. As a side effect of this change, the -d option now supports the same three-values enumeration that frame variables uses (run, don't run, none) instead of a boolean like it did previously These options do not apply to print, p or po because these are aliased to not take any options. In order to use them, use expression or expr. llvm-svn: 171993
2012-10-16Add the ability to set timeout & "run all threads" options both from the ↵Jim Ingham
"expr" command and from the SB API's that evaluate expressions. <rdar://problem/12457211> llvm-svn: 166062
2012-06-08Make raw & parsed commands subclasses of CommandObject rather than having ↵Jim Ingham
the raw version implement an Execute which was never going to get run and another ExecuteRawCommandString. Took the knowledge of how to prepare raw & parsed commands out of CommandInterpreter and put it in CommandObject where it belongs. Also took all the cases where there were the subcommands of Multiword commands declared in the .h file for the overall command and moved them into the .cpp file. Made the CommandObject flags work for raw as well as parsed commands. Made "expr" use the flags so that it requires you to be paused to run "expr". llvm-svn: 158235
2012-01-27There is no need to hold onto an ExecutionContext as a member variable. Greg Clayton
ExecutionContext objects have shared pointers to Target, Process, Thread and Frame objects and they can end up being held onto for too long. llvm-svn: 149133
2011-10-25Updated all commands that use a "--format" / "-f" options to use the newGreg Clayton
OptionGroupFormat. Updated OptionGroupFormat to be able to also use the "--size" and "--count" options. Commands that use a OptionGroupFormat instance can choose which of the options they want by initializing OptionGroupFormat accordingly. Clients can either get only the "--format", "--format" + "--size", or "--format" + "--size" + "--count". This is in preparation for upcoming chnages where there are alternate ways (GDB format specification) to set a format. llvm-svn: 142911
2011-06-13More prompt-timing cleanups: Make multi-line expressionsCaroline Tice
use the asynchronous stream mechanism rather than writing directly to the Debugger's output & error streams. llvm-svn: 132930
2011-04-16Add support for "dynamic values" for C++ classes. This currently only works ↵Jim Ingham
for "frame var" and for the expressions that are simple enough to get passed to the "frame var" underpinnings. The parser code will have to be changed to also query for the dynamic types & offsets as it is looking up variables. The behavior of "frame var" is controlled in two ways. You can pass "-d {true/false} to the frame var command to get the dynamic or static value of the variables you are printing. There's also a general setting: target.prefer-dynamic-value (boolean) = 'true' which is consulted if you call "frame var" without supplying a value for the -d option. llvm-svn: 129623
2011-04-13Added two new classes for command options:Greg Clayton
lldb_private::OptionGroup lldb_private::OptionGroupOptions OptionGroup lets you define a class that encapsulates settings that you want to reuse in multiple commands. It contains only the option definitions and the ability to set the option values, but it doesn't directly interface with the lldb_private::Options class that is the front end to all of the CommandObject option parsing. For that the OptionGroupOptions class can be used. It aggregates one or more OptionGroup objects and directs the option setting to the appropriate OptionGroup class. For an example of this, take a look at the CommandObjectFile and how it uses its "m_option_group" object shown below to be able to set values in both the FileOptionGroup and PlatformOptionGroup classes. The members used in CommandObjectFile are: OptionGroupOptions m_option_group; FileOptionGroup m_file_options; PlatformOptionGroup m_platform_options; Then in the constructor for CommandObjectFile you can combine the option settings. The code below shows a simplified version of the constructor: CommandObjectFile::CommandObjectFile(CommandInterpreter &interpreter) : CommandObject (...), m_option_group (interpreter), m_file_options (), m_platform_options(true) { m_option_group.Append (&m_file_options); m_option_group.Append (&m_platform_options); m_option_group.Finalize(); } We append the m_file_options and then the m_platform_options and then tell the option group the finalize the results. This allows the m_option_group to become the organizer of our prefs and after option parsing we end up with valid preference settings in both the m_file_options and m_platform_options objects. This also allows any other commands to use the FileOptionGroup and PlatformOptionGroup classes to implement options for their commands. Renamed: virtual void Options::ResetOptionValues(); to: virtual void Options::OptionParsingStarting(); And implemented a new callback named: virtual Error Options::OptionParsingFinished(); This allows Options subclasses to verify that the options all go together after all of the options have been specified and gives the chance for the command object to return an error. It also gives a chance to take all of the option values and produce or initialize objects after all options have completed parsing. Modfied: virtual Error SetOptionValue (int option_idx, const char *option_arg) = 0; to be: virtual Error SetOptionValue (uint32_t option_idx, const char *option_arg) = 0; (option_idx is now unsigned). llvm-svn: 129415
2011-04-07Modified the ArchSpec to take an optional "Platform *" when setting the triple.Greg Clayton
This allows you to have a platform selected, then specify a triple using "i386" and have the remaining triple items (vendor, os, and environment) set automatically. Many interpreter commands take the "--arch" option to specify an architecture triple, so now the command options needed to be able to get to the current platform, so the Options class now take a reference to the interpreter on construction. Modified the build LLVM building in the Xcode project to use the new Xcode project level user definitions: LLVM_BUILD_DIR - a path to the llvm build directory LLVM_SOURCE_DIR - a path to the llvm sources for the llvm that will be used to build lldb LLVM_CONFIGURATION - the configuration that lldb is built for (Release, Release+Asserts, Debug, Debug+Asserts). I also changed the LLVM build to not check if "lldb/llvm" is a symlink and then assume it is a real llvm build directory versus the unzipped llvm.zip package, so now you can actually have a "lldb/llvm" directory in your lldb sources. llvm-svn: 129112
2011-03-24Fixed the LLDB build so that we can have private types, private enums andGreg Clayton
public types and public enums. This was done to keep the SWIG stuff from parsing all sorts of enums and types that weren't needed, and allows us to abstract our API better. llvm-svn: 128239