Fix unnecessary-some rule not working after OPA 1.0+

bundle/regal/ast/imports.rego

@@ -1,5 +1,7 @@
 package regal.ast
 
+import data.regal.capabilities
+
 default imports := []
 
 # METADATA
@@ -46,26 +48,31 @@ resolved_imports[identifier] := path if {
 #   returns true if provided path (like ["data", "foo", "bar"]) is in the
 #   list of imports (which is commonly ast.imports)
 imports_has_path(imports, path) if {
-	some imp in imports
+	pv := imports[_].path.value
+
+	count(pv) == count(path)
 
-	_arr(imp) == path
+	every i, part in path {
+		part == pv[i].value
+	}
 }
 
 # METADATA
 # description: |
 #   returns whether a keyword is imported in the policy, either explicitly
 #   like "future.keywords.if" or implicitly like "future.keywords" or "rego.v1"
 imports_keyword(imports, keyword) if {
-	some imp in imports
+	capabilities.is_opa_v1 # regal ignore:external-reference
+	input.regal.file.rego_version != "v0"
+} else if {
+	pv := imports[_].path.value
 
-	_has_keyword(_arr(imp), keyword)
+	_has_keyword([p.value | some p in pv], keyword)
 }
 
 _imported_identifier(imp) := imp.alias
 _imported_identifier(imp) := regal.last(imp.path.value).value if not imp.alias
 
-_arr(xs) := [y.value | some y in xs.path.value]
-
 _has_keyword(["future", "keywords"], _)
 _has_keyword(["future", "keywords", "every"], "in")
 _has_keyword(["future", "keywords", keyword], keyword)

bundle/regal/ast/imports_test.rego

@@ -37,3 +37,10 @@ test_imports_keyword_future_keywords_every if {
 	not ast.imports_keyword(module.imports, "if")
 	not ast.imports_keyword(module.imports, "contains")
 }
+
+test_imports_all_kewords_opa_1dot0[keyword] if {
+	some keyword in ["in", "if", "every", "contains"]
+
+	ast.imports_keyword([], keyword) with input.regal.file.rego_version as "v1"
+		with data.regal.capabilities.is_opa_v1 as true
+}

bundle/regal/rules/style/unnecessary-some/unnecessary_some.rego

@@ -7,7 +7,7 @@ import data.regal.result
 
 report contains violation if {
 	# No need to traverse rules here if we're not importing `in`
-	ast.imports_keyword(input.imports, "in")
+	ast.imports_keyword(ast.imports, "in")
 
 	symbols := ast.found.symbols[_][_]