When computing the type name for a field of an object type, we must
ensure that we do not generate invalid recursive struct types. A struct
type T contains invalid recursion if the closure of its fields and its
struct-typed fields' fields includes a field of type T. A few examples:
Directly invalid:
type T struct { Invalid T }
Indirectly invalid:
type T struct { Invalid S }
type S struct { Invalid T }
In order to avoid generating invalid struct types, we replace all
references to types involved in a cyclical definition with *T. The
examples above therefore become:
(1) type T struct { Valid *T }
(2) type T struct { Valid *S }
type S struct { Valid *T }
We do this using a rewriter that turns all fields involved in reference
cycles into optional fields.
These changes also include an enhancement to the SDK codegen test
driver in the interest of making iterating and debugging more convenient: if the -sdk.no-checks flag is passed, the driver will not run post-generation checks.
Unlike most languages with interpolated strings, Python's formatted
string literals do not allow the nesting of quotes. For example,
this expression is not legal Python:
f"Foo {"bar"} baz"
If an interpolation requires quotes, those quotes nust differ from the
quotes used by the enclosing literal. We can fix the previous example
by rewriting it with single quotes:
f"Foo {'bar'} baz"
However, this presents a problem if there are more than two levels of
nesting, as Python only has two kinds of quotes (four if the outermost
string uses """ or '''): in this case, the expression becomes
unspellable, and must be assigned to a local that is then used in place
of the original expression. So this:
f"Foo {bar[f'index {baz["qux"]}']} zed"
becomes this:
index = "qux"
f"Foo {bar[f'index {baz[index]}']}"
To put it bluntly, Python code generation reqiures register allocation,
but for quotes. These changes implement exactly that.
These changes also include a fix for traversals that access values that
are dictionaries rather than objects, and must use indexers rather than
attributes.
* Make `async:true` the default for `invoke` calls (#3750)
* Switch away from native grpc impl. (#3728)
* Remove usage of the 'deasync' library from @pulumi/pulumi. (#3752)
* Only retry as long as we get unavailable back. Anything else continues. (#3769)
* Handle all errors for now. (#3781)
* Do not assume --yes was present when using pulumi in non-interactive mode (#3793)
* Upgrade all paths for sdk and pkg to v2
* Backport C# invoke classes and other recent gen changes (#4288)
Adjust C# generation
* Replace IDeployment with a sealed class (#4318)
Replace IDeployment with a sealed class
* .NET: default to args subtype rather than Args.Empty (#4320)
* Adding system namespace for Dotnet code gen
This is required for using Obsolute attributes for deprecations
```
Iam/InstanceProfile.cs(142,10): error CS0246: The type or namespace name 'ObsoleteAttribute' could not be found (are you missing a using directive or an assembly reference?) [/Users/stack72/code/go/src/github.com/pulumi/pulumi-aws/sdk/dotnet/Pulumi.Aws.csproj]
Iam/InstanceProfile.cs(142,10): error CS0246: The type or namespace name 'Obsolete' could not be found (are you missing a using directive or an assembly reference?) [/Users/stack72/code/go/src/github.com/pulumi/pulumi-aws/sdk/dotnet/Pulumi.Aws.csproj]
```
* Fix the nullability of config type properties in C# codegen (#4379)
These changes add preliminary (read: incomplete) support for
representing Pulumi programs using HCL2. Language-specific code
generators can use this representation as a basis for understanding the
semantics of a Pulumi program.
