[interop] Pass template names and named constants as template arguments - #62
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[interop] Pass template names and named constants as template arguments#62conrade-ctc wants to merge 2 commits into
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is_integral rejects a leading minus, so the comma-split fallback in AppendTypesSlow reads a negative literal as a type name. Accept the sign. Co-developed-with-the-help-of: Claude Code (Opus 5, human in the loop)
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A class or alias template name becomes a template-template argument. The argument carries the name and a null type. A constexpr variable or an enum constant goes through as its qualified name, so Sema builds an expression. true and false become bool values. The by-name paths need a CppInterOp that resolves the name. An older one reads the name as an integer literal and instantiates a garbage value. Probe for CppInterOp's SupportsNamedTemplateArguments export, and skip the test when it is absent. Co-developed-with-the-help-of: Claude Code (Fable 5, human in the loop)
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A template argument can now name a template or a constant. A class or alias template name becomes a template-template argument. A constexpr variable or an enum constant becomes an expression, so Sema reads its value.
trueandfalsebecome bool values. The first commit fixes a separate bug:is_integralrejected a leading minus, so a negative literal became a type name.The by-name paths need CppInterOp compiler-research/CppInterOp#1074, which resolves the name and exports a capability marker. cppjit probes for the marker and keeps the paths off when it is absent. The guarded test then skips.