llvm-project.git/lldb/test/API/lang/cpp/template-arguments/main.cpp, branch main

[lldb][TypeSystemClang] Add support for floating point template argument constants (#127206)

2025-02-17T22:03:53+00:00

This patch adds support for template arguments of
`clang::TemplateArgument::ArgKind::StructuralValue` kind (added in
https://github.com/llvm/llvm-project/pull/78041). These are used for
non-type template parameters such as floating point constants. When LLDB
created `clang::NonTypeTemplateParmDecl`s, it previously assumed
integral values, this patch accounts for structural values too.

Anywhere LLDB assumed a `DW_TAG_template_value_parameter` was
`Integral`, it will now also check for `StructuralValue`, and will
unpack the `TemplateArgument` value and type accordingly.

We can rely on the fact that any `TemplateArgument` of `StructuralValue`
kind that the `DWARFASTParserClang` creates will have a valid value,
because it gets those from `DW_AT_const_value`.

[lldb][SBAPI] Add new SBType::GetTemplateParameterValue API (#126901)

2025-02-13T09:53:17+00:00

This patch adds a new API to `SBType` to retrieve the value of a
template parameter given an index. We re-use the
`TypeSystemClang::GetIntegralTemplateArgument` for this and thus
currently only supports integral non-type template parameters. Types
like float/double are not supported yet.

rdar://144395216

[lldb] Explicitly test the template argument SB API

2020-10-15T09:17:43+00:00