Commit Graph

12 Commits

Author SHA1 Message Date
Tom Weaver c2c2be44ed [Dexter] Add DexDeclareFile command to Dexter
DexDeclareFile allows test producers to write test files with .dex extensions
that contain pure dexter commands.

.dex file commands do not need to be commented out like they do when written
inline within test source files.

DexDeclareFile commands are declarative in behaviour, they state that any
Dexter command seen from this point on will have its path attribute set to the
path declared in the DexDeclareFile command.

Differential Revision: https://reviews.llvm.org/D99651
2021-05-25 12:47:16 +01:00
OCHyams 469833f418 [dexter] Add hit_count keyword arg to DexLimitSteps
The DexLimitSteps command leading breakpoint will be deleted after triggering
'hit_count' number of times if the argument is provided.

All the lit tests pass on linux (with lldb), and I've tested this on windows
(with vs2017) manually as the lit tests for DexLimitSteps are currently
unsupported on windows.

Reviewed By: StephenTozer, chrisjackson

Differential Revision: https://reviews.llvm.org/D101527
2021-05-21 12:45:02 +01:00
OCHyams 723a8ae5da [dexter] Change line label reference syntax to enable label-relative offsets (1/2)
This patch changes how line labels are resolved in order to enable
label-relative offsets to be used in commands. This is a breaking change in
dexter. Instead of using label references directly as argument values, labels
will instead be referenced through a function `ref(str)`.

    // No way to use offsets currently.
    Currently: DexExpectWatchValue('x', '1', on_line='labled_line')
    Patched:   DexExpectWatchValue('x', '1', on_line=ref('labled_line'))
    Patched:   DexExpectWatchValue('x', '1', on_line=ref('labled_line') + 3)

A dexter command is "parsed" by finding the whole command and sending it off to
`eval`. This change adds a function called `ref` to the `eval` globals map that
simply looks up the name and returns an int. If the line name hasn't been
defined, or a name is defined more than once, an error is reported (see
err_bad_label_ref.cpp and err_duplicate_label.cpp). Label offsets can be
achieved by simply writing the desired expression.

The rationale behind removing the existing label referencing mechanic is for
consistency and to simplify the code required to make labels work.

I've separated the update to llvm's dexter tests into another patch for ease of
review here (D101148). Here is a small python script which can be used to
update tests to use the new syntax:
https://gist.github.com/OCHyams/8255efe7757cac266440ed2ba55f1442

If it helps anyone using dexter on downstream tests we can come up with a
deprecation plan instead out outright removing the existing syntax.

Reviewed By: jmorse

Differential Revision: https://reviews.llvm.org/D101147
2021-05-21 08:58:58 +01:00
OCHyams e35a5492a4 [dexter] Remove requirement for a condition in DexLimitSteps
Currently the DexLimitSteps command requires at least one condition. This patch
lets users elide the condition to specify that the breakpoint range should
always be activated when the leading line is stepped on. This patch also
updates the terminology used in the `ConditionalController` class from the
terms 'conditional' and 'unconditional' to 'leading' and 'trailing' when
referring to the breakpoints in the DexLimitSteps range because the leading
breakpoint can now be unconditional.

Reviewed By: chrisjackson

Differential Revision: https://reviews.llvm.org/D101438
2021-05-17 09:13:57 +01:00
OCHyams 487ab53459 [dexter] Add keyword argument 'on_line' to DexLabel
Add optional keyword argument 'on_line' to DexLabel to label the specifed line
instead of the line the command is found on.

This will be helpful when used alongside DexDeclareFile (D99651).

Reviewed By: TWeaver

Differential Revision: https://reviews.llvm.org/D101055
2021-04-23 12:00:16 +01:00
Nabeel Omer 7d8c19a4e9 [Dexter][NFC] Add Missing Commands to Commands.md Contents
NFC patch simply updates the commands.md documentation contents with missing
  links to the DexLimitSteps and DexLabel command documentation.

  Differential Revision: https://reviews.llvm.org/D89689

  Author:    Nabeel Omer <nabeel.omer@sony.com>
2020-10-19 16:38:49 +01:00
Tom Weaver c6aa829644 [Dexter] Add DexLimitSteps command and ConditionalController
* Adds DexLimitSteps Command.
* Add ConditionalController, a new DebuggerController type.
* 5 regression tests
* documentation

* recommit, fixed accidental adding of unnecessary file

Reviewers: jmorse

Differential Revision: https://reviews.llvm.org/D79786
2020-06-05 12:53:56 +01:00
Tom Weaver 05eabb5204 Revert "[Dexter] Add DexLimitSteps command and ConditionalController"
This reverts commit 81e836a5a6.

Accidentally committed a diff file.
2020-06-03 12:28:26 +01:00
Tom Weaver 81e836a5a6 [Dexter] Add DexLimitSteps command and ConditionalController
* Adds DexLimitSteps Command.
  * Add ConditionalController, a new DebuggerController type.
  * 5 regression tests
  * documentation

  Reviewers: jmorse

  Differential Revision: https://reviews.llvm.org/D79786
2020-06-02 16:19:43 +01:00
Jeremy Morse 984fad243d Reapply "Import Dexter to debuginfo-tests""
This reverts commit cb935f3456.

Discussion in D68708 advises that green dragon is being briskly
refurbished, and it's good to have this patch up testing it.
2019-10-31 16:51:53 +00:00
Jeremy Morse cb935f3456 Revert "Import Dexter to debuginfo-tests"
This reverts commit f78c236efd.

Green dragon breakage was observed; I'll take a look at why.
2019-10-31 16:22:10 +00:00
Jeremy Morse f78c236efd Import Dexter to debuginfo-tests
Dexter (Debug Experience Tester) is a test-driver for our debug info
integration tests, reading a set of debug experience expectations and
comparing them with the actual behaviour of a program under a debugger.
More about Dexter can be found in the RFC:

  http://lists.llvm.org/pipermail/llvm-dev/2019-October/135773.html

and the phab review in D68708. Not all the debuginfo tests have been
transformed into Dexter tests, and we look forwards to doing that
incrementally.

This commit mostly aims to flush out buildbots that are running
debuginfo-tests but don't have python 3 installed, possibly
green-dragon and some windows bots.
2019-10-31 13:49:47 +00:00