pulumi/pkg/codegen/python/gen_program_lower.go
CyrusNajmabadi 66bd3f4aa8
Breaking changes due to Feature 2.0 work
* 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)
2020-04-14 09:30:25 +01:00

59 lines
2.1 KiB
Go

package python
import (
"github.com/hashicorp/hcl/v2"
"github.com/hashicorp/hcl/v2/hclsyntax"
"github.com/pulumi/pulumi/pkg/v2/codegen/hcl2"
"github.com/pulumi/pulumi/pkg/v2/codegen/hcl2/model"
"github.com/pulumi/pulumi/sdk/v2/go/common/util/contract"
)
// parseProxyApply attempts to match the given parsed apply against the pattern (call __applyArg 0). If the call
// matches, it returns the ScopeTraversalExpression that corresponds to argument zero, which can then be generated as a
// proxied apply call.
func (g *generator) parseProxyApply(args []*model.ScopeTraversalExpression,
then *model.AnonymousFunctionExpression) (*model.ScopeTraversalExpression, bool) {
if len(args) != 1 {
return nil, false
}
thenTraversal, ok := then.Body.(*model.ScopeTraversalExpression)
if !ok || thenTraversal.Parts[0] != then.Parameters[0] {
return nil, false
}
traversal := hcl.TraversalJoin(args[0].Syntax.Traversal, thenTraversal.Syntax.Traversal[1:])
expr, diags := g.program.BindExpression(&hclsyntax.ScopeTraversalExpr{
Traversal: traversal,
SrcRange: traversal.SourceRange(),
})
contract.Assert(len(diags) == 0)
return expr.(*model.ScopeTraversalExpression), true
}
// lowerProxyApplies lowers certain calls to the apply intrinsic into proxied property accesses. Concretely, this boils
// down to rewriting the following shape:
// - (call __apply (resource variable access) (call __applyArg 0))
// into
// - (resource variable access)
func (g *generator) lowerProxyApplies(expr model.Expression) (model.Expression, hcl.Diagnostics) {
rewriter := func(expr model.Expression) (model.Expression, hcl.Diagnostics) {
// Ignore the node if it is not a call to the apply intrinsic.
apply, ok := expr.(*model.FunctionCallExpression)
if !ok || apply.Name != hcl2.IntrinsicApply {
return expr, nil
}
// Parse the apply call.
args, then := hcl2.ParseApplyCall(apply)
// Attempt to match (call __apply (rvar) (call __applyArg 0))
if v, ok := g.parseProxyApply(args, then); ok {
return v, nil
}
return expr, nil
}
return model.VisitExpression(expr, model.IdentityVisitor, rewriter)
}