Indexes allow associating extra data with nodes in the AST
using an array and then quickly looking up the array to fetch
the extra data.
- Index eidx for expressions
- Index sidx for statements
- Index qidx for queries.
AST nodes are not cloneable. Therefore once a module is created,
it is not possible to accidentally create two nodes with the same
index inadvertently via clone.
Also added IndexChecker in debug builds. When a module is parsed,
it will assert that indexes have been constructed correctly.
AST Cleanup
- Make literal expressions (null, val, number, string etc) also structs
to match all other expressions
- Merge True and False nodes into a single Bool node.
Also update dependencies.
Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>
Implement `import rego.v1`
https://www.openpolicyagent.org/docs/latest/policy-language/#the-regov1-import
- `if` required before rule body
- import rego.v1 automatically imports future.keywords
- handle import shadowing
- data, input cannot be shadowed
- deprecated functions as disallowed
- rules must have assignment or body
- `contains` required for parital set
Signed-off-by: Anand Krishnamoorthi <anakrish@microsoft.com>
