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Add imports of enclosing scopes. (#3575)

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Namespaces are copied, which means also adding their name to the
underlying instruction. It happened not to be done previously; the name
was only in name lookup.

Since the only import supported right now is the default import,
functionality is limited; in the future I'll need to deal with namespace
vs package conflicts.

Tests of namespace imports are under "namespace" -- I figured this would
be best for scaling as more instructions get support.

This also improves some debugging-related output that I was trying to
use while trying to build the support.

---------

Co-authored-by: Richard Smith <richard@metafoo.co.uk>
This commit is contained in:
Jon Ross-Perkins
2024-01-10 17:36:50 +00:00
committed by GitHub
co-authored by Richard Smith
parent 848d4d7ec0
commit cad4605dad
309 changed files with 965 additions and 453 deletions
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toolchain/check/testdata/array/function_param.carbon
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@@ -20,7 +20,7 @@ fn G() -> i32 {
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace {.F = %F, .G = %G}
// CHECK:STDOUT: package: <namespace> = namespace package, {.F = %F, .G = %G}
// CHECK:STDOUT: %F: <function> = fn_decl @F
// CHECK:STDOUT: %G: <function> = fn_decl @G
// CHECK:STDOUT: }