* Use a package map where appropriate
* Fix imports
* handle NoneType for literal value expressions in go program gen
* add operator tests for c#, python, and node
Co-authored-by: evanboyle <evan@pulumi.com>
The PCL binder has supported resource options for some time, but these
options haven't been used or processed by the various code generators.
These options--particularly the parent and provider options0--are
critical for import codegen. These changes implement the basic set of
options, and add a note about fleshing out the rest as necessary.
One component of these changes is a new rewriter that rewrites property
references into property paths that are understood by the Pulumi engine.
This rewriter is used to preprocess the contents of the `ignoreChanges`
resource option.
These changes also hack around a weakness in the HCL2 type system:
In Go, references to resources should be typed as `hcl2.ResourceType`.
Unfortunately, this breaks the existing collection semantics associated
with resources. Because of this, the Go code generator does not have
enough information to know that it should generate a `[]pulumi.Resource`
for lists of resources. These changes hack around that limitation using
a Go-specific opaque type and some hardcoded comparisons in
`argumentTypeName`.
Fixes#4923.
If we are generating code into an async context (e.g. an async main),
await calls to invoke rather than leaving them as promises. This results
in more idiomatic code withing such contexts.
There are two expressions in HCL2 that are used to iterate over
collections:
- Splat expressions, e.g. `foo.*.bar`, and
- For expressions, e.g. `[for v in foo: v.bar]`
In both of these cases, the parts of the expression that are not the
collection being iterated behave like callbacks, and must be treated as
such by the apply rewriter.
Specifically, handle index and relative traversal expressions, and clean
up the code a little bit.
This should also help us pick up more `pulumi.interpolate` calls in TS.
- Determine variable types for ranged resources by typechecking an
equivalent expression
- Detect top-level await in NodeJS and generate an async main
- Fix `pulumi.all` generation for NodeJS
- Fix a bug in the lowering of relative traversals in Python
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.
Mapping happens at package scope, not type scope. This is what causes
some of the surprising mixes of camel and snake casing in our packages.
In order to accommodate this, build the case mapping tables up front,
and refer to them when performing case mapping.