Select statements are a new blueprint feature inspired by bazel's select
statements. They are essentially alternative syntax for soong config
variables that require less boilerplate. In addition, they support
making decisions based on a module's variant, which will eliminate
the need for manual property struct manipulation, such as the arch
mutator's arch: and target: properties.
In order to support decisions based on the variant, select statements
cannot be evaluated as soon as they're parsed. Instead, they must be
stored in the property struct unevaluated. This means that individual
properties need to change their type from say, string, to
Configurable[string]. Currently, only configurable strings, bools, and
string slices are supported, but more types can be added later.
The module implementation must call my_property.Evaluate(ctx) in order
to get the final, resolved value of the select statement.
Bug: 323382414
Test: go tests
Change-Id: I62f8721d7f0ac3d1df4a06d7eaa260a5aa7fcba3
When property a.b.c is not used, (also there is no a.* or a.b.* used)
"a", "a.b" and "a.b.c" are all in unusedNames.
removeUnnecessaryUnusedNames only keeps the last "a.b.c" as the
real unused name.
Test: TestNonExistentPropertyInSoongConfigModule, unpack_test.go and CI
Bug: 171232169
Change-Id: I861fa6933e558b07694ee5ff40ef549117d115ff
This limits support to allow-listed property names to prevent
proliferation of map types requiring additional support to migrate.
Test: go test blueprint tests
Test: m nothing && diff build.ninja & Android-aosp_arm.mk -- no changes
Change-Id: Id12637462f19ac5de1b562f63507de989a51600d
Values assigned to map properties were silently ignored instead of
reported as an error. Add a check when recursing into structs that
the value is a map.
Fixes: 177706602
Test: m nothing
Test: TestUnpackErrors
Change-Id: Ic56aeb1b9da6d5c86b6d98adae7bddb60c450404
Returning a fmt.Errorf error causes Blueprint to identify the error
as an "internal error", return an UnpackError instead.
Bug: 177706602
Test: TestUnpackErrors
Change-Id: I19fba134ad778d08d5a4d90a0335bdf8cbea6a20
The filter tag is unused, replaced with FilterPropertyStruct to
generate a new type at runtime that only contains the filtered
fields.
Test: unpack_test.go
Change-Id: Id91cf99290832094d05426f3263279836f0fea73
