http://llvm.org/bugs/show_bug.cgi?id=17472
Bug ID: 17472
Summary: Summary strings should have a way to run expressions
Product: lldb
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: All Bugs
Assignee: [email protected]
Reporter: [email protected]
Classification: Unclassified
LLDB includes a summary string feature that one can use to provide a summary
for a data type by providing a string that is then formatted with a bunch of
escape sequences and rules. For instance "foo=${var.foo%x}” amounts to
displaying
foo=<value of child member foo formatted as a hex number>
when evaluated as a summary
This ER requests the addition of a syntax through which expressions can be run
in order to generate a summary. For instance, if my class has a function
getUsefulString(), one could want to vend a summary that displays the useful
string. Currently, Python summaries are the way to achieve that effect, but it
would be nice if one could simply say something like
${expr:$VAR.getUsefulString()}
The ${expr: / $VAR syntax is in no way mandatory, and simply an example of a
proposal. However a syntax that seamlessly blends in with the current ${…
format is certainly a plus
Bonus points if the implementation is able to recognize a Foo from a Foo* and
automagically do the right thing w.r.t. dot vs arrow
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