Commit Graph

15 Commits

Author SHA1 Message Date
Sean Callanan 7736a208b8 [fix] Fixed a bug where const this would cause parser errors about $__lldb_expr.
In templated const functions, trying to run an expression would produce the
error

error: out-of-line definition of '$__lldb_expr' does not match any declaration
in 'foo' member declaration does not match because it is const qualified
error: 1 error parsing expression

which is no good.  It turned out we don't actually need to worry about "const,"
we just need to be consistent about the declaration of the expression and the
FunctionDecl we inject into the class for "this."

Also added a test case.

<rdar://problem/24985958>

llvm-svn: 268083
2016-04-29 18:09:03 +00:00
Pavel Labath 35e9ea3812 Revert "Fixed a bug where const this would cause parser errors about $__lldb_expr."
This reverts commit r267833 as it breaks the build. It looks like some work in progress got
committed together with the actual fix, but I'm not sure which one is which, so I'll revert the
whole patch and let author resumbit it after fixing the build error.

llvm-svn: 267861
2016-04-28 08:16:19 +00:00
Sean Callanan 8bdcd52251 Fixed a bug where const this would cause parser errors about $__lldb_expr.
In templated const functions, trying to run an expression would produce the
error

error: out-of-line definition of '$__lldb_expr' does not match any declaration in 'foo'
member declaration does not match because it is const qualified
error: 1 error parsing expression

which is no good.  It turned out we don't actually need to worry about "const,"
we just need to be consistent about the declaration of the expression and the
FunctionDecl we inject into the class for "this."

Also added a test case.

<rdar://problem/24985958>

llvm-svn: 267833
2016-04-28 01:36:21 +00:00
Jim Ingham e5ee6f04ab Figure out what the fixed expression is, and print it. Added another target 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
2016-03-29 22:00:08 +00:00
Sean Callanan 47cca78efa Record all translation units with more than one function in them (e.g., blocks).
Blocks and lambdas have their implementation functions stored in the IR for an
expression.  If we put the block/lambda into a result variable it needs to stay
around.  As a heuristic, remember any execution unit that has more than one
function in it.

<rdar://problem/22864976>

llvm-svn: 264483
2016-03-26 00:30:40 +00:00
Jim Ingham a1e541bf9f Use Clang's FixItHints to correct expressions with "trivial" mistakes (e.g. "." 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
2016-03-25 01:57:14 +00:00
Sean Callanan 00294b34a3 Backend support for top-level Clang epxressions
This patch adds a new ExecutionPolicy, eExecutionPolicyTopLevel, which
tells the expression parser that the expression should be JITted as top
level code but nothing (except static initializers) should be run.  I
have modified the Clang expression parser to recognize this execution
policy.  On top of the existing patches that support storing IR and
maintaining a map of arbitrary Decls, this is mainly just patching up a
few places in the expression parser.

I intend to submit a patch for review that exposes this functionality
through the "expression" command and through the SB API.  That patch
also includes a testcase for all of this.

<rdar://problem/22864976>

llvm-svn: 264095
2016-03-22 21:05:51 +00:00
Sean Callanan 579e70c9b0 Add a DiagnosticManager replace error streams in the expression parser.
We want to do a better job presenting errors that occur when evaluating
expressions. Key to this effort is getting away from a model where all
errors are spat out onto a stream where the client has to take or leave
all of them.

To this end, this patch adds a new class, DiagnosticManager, which
contains errors produced by the compiler or by LLDB as an expression
is created. The DiagnosticManager can dump itself to a log as well as
to a string. Clients will (in the future) be able to filter out the
errors they're interested in by ID or present subsets of these errors
to the user.

This patch is not intended to change the *users* of errors - only to
thread DiagnosticManagers to all the places where streams are used. I
also attempt to standardize our use of errors a bit, removing trailing
newlines and making clients omit 'error:', 'warning:' etc. and instead
pass the Severity flag.

The patch is testsuite-neutral, with modifications to one part of the
MI tests because it relied on "error: error:" being erroneously
printed. This patch fixes the MI variable handling and the testcase.

<rdar://problem/22864976>

llvm-svn: 263859
2016-03-19 00:03:59 +00:00
Jim Ingham 51148e9f94 AddInitialArguments -> AddArguments, and we pass in the struct_address and push it too. All the
callers had to do this by hand and we ended up never actually adding initial arguments and then
reusing them by passing in the struct address separately, so the distinction wasn't needed.

llvm-svn: 252108
2015-11-05 00:24:18 +00:00
Jim Ingham 19a63fc6fa Add the ability to pass an EvaluateExpressionOptions when you make a UserExpression. This
isn't used in this commit but will be in a future commit.

llvm-svn: 251887
2015-11-03 02:11:24 +00:00
Ryan Brown 998c8a1c1c Create an expression parser for Go.
The Go interpreter doesn't JIT or use LLVM, so this also
moves all the JIT related code from UserExpression to a new class LLVMUserExpression.

Differential Revision: http://reviews.llvm.org/D13073

Fix merge

llvm-svn: 251820
2015-11-02 19:30:40 +00:00
Sean Callanan 9fda9d2177 Add PersistentVariableDelegate to handle language-specific dematerialization.
The concept here is that languages may have different ways of communicating
results.  In particular, languages may have different names for their result
variables and in fact may have multiple types of result variables (e.g.,
error results).  Materializer was tied to one specific model of result handling.

Instead, now UserExpressions can register their own handlers for the result
variables they inject.  This allows language-specific code in Materializer to
be moved into the expression parser plug-in, and it simplifies Materializer.
These delegates are subclasses of PersistentVariableDelegate.

PersistentVariableDelegate can provide the name of the result variable, and is
notified when the result variable is populated.  It can also be used to touch
persistent variables if need be, updating language-specific state.  The
UserExpression owns the delegate and can decide on its result based on
consulting all of its (potentially multiple) delegates.

The user expression itself now makes the determination of what the final result
of the expression is, rather than relying on the Materializer, and I've added a
virtual function to UserExpression to allow this.

llvm-svn: 249233
2015-10-03 09:09:01 +00:00
Sean Callanan b92bd7538e Made Target hold a map of languages to TypeSystems, and added some accessors.
Also added some target-level search functions so that persistent variables and
symbols can be searched for without hand-iterating across the map of
TypeSystems.

llvm-svn: 249027
2015-10-01 16:28:02 +00:00
Sean Callanan 8f1f9a1be3 Now persistent expression data no longer lives with the Target, but rather with
the corresponding TypeSystem.  This makes sense because what kind of data there
is -- and how it can be looked up -- depends on the language.

Functionality that is common to all type systems is factored out into
PersistentExpressionState.

llvm-svn: 248934
2015-09-30 19:57:57 +00:00
Sean Callanan 4dbb271fcc Moved more Clang-specific parts of the expression parser into the Clang plugin.
There are still a bunch of dependencies on the plug-in, but this helps to
identify them.
There are also a few more bits we need to move (and abstract, for example the
ClangPersistentVariables).

llvm-svn: 248612
2015-09-25 20:35:58 +00:00