policy: fix "all" and "any" to apply a single statement on a collection

Matching the spec

capability/policy/ipld.go

@@ -104,9 +104,9 @@ func statementFromIPLD(path string, node datamodel.Node) (Statement, error) {
 			if err != nil {
 				return nil, err
 			}
-			statementsNodes, _ := node.LookupByIndex(2)
-			statements, err := statementsFromIPLD(path+"1/", statementsNodes)
-			return quantifier{kind: op, selector: sel, statements: statements}, nil
+			statementsNode, _ := node.LookupByIndex(2)
+			statement, err := statementFromIPLD(path+"1/", statementsNode)
+			return quantifier{kind: op, selector: sel, statement: statement}, nil
 
 		default:
 			return nil, ErrUnrecognizedOperator(path, op)
@@ -243,7 +243,7 @@ func statementToIPLD(statement Statement) (datamodel.Node, error) {
 		if err != nil {
 			return nil, err
 		}
-		args, err := statementsToIPLD(statement.statements)
+		args, err := statementToIPLD(statement.statement)
 		if err != nil {
 			return nil, err
 		}

capability/policy/match.go

@@ -110,7 +110,7 @@ func matchStatement(statement Statement, node ipld.Node) bool {
 				return false
 			}
 			for _, n := range many {
-				ok := Match(s.statements, n)
+				ok := matchStatement(s.statement, n)
 				if !ok {
 					return false
 				}
@@ -124,7 +124,7 @@ func matchStatement(statement Statement, node ipld.Node) bool {
 				return false
 			}
 			for _, n := range many {
-				ok := Match(s.statements, n)
+				ok := matchStatement(s.statement, n)
 				if ok {
 					return true
 				}

capability/policy/match_test.go

@@ -400,8 +400,7 @@ func TestMatch(t *testing.T) {
 			pol := Policy{
 				Any(
 					selector.MustParse(".[]"),
-					GreaterThan(selector.MustParse(".value"), literal.Int(10)),
-					LessThan(selector.MustParse(".value"), literal.Int(50)),
+					GreaterThan(selector.MustParse(".value"), literal.Int(60)),
 				),
 			}
 			ok := Match(pol, nd)

capability/policy/policy.go

@@ -40,23 +40,23 @@ func (e equality) Kind() string {
 }
 
 func Equal(selector selector.Selector, value ipld.Node) Statement {
-	return equality{KindEqual, selector, value}
+	return equality{kind: KindEqual, selector: selector, value: value}
 }
 
 func GreaterThan(selector selector.Selector, value ipld.Node) Statement {
-	return equality{KindGreaterThan, selector, value}
+	return equality{kind: KindGreaterThan, selector: selector, value: value}
 }
 
 func GreaterThanOrEqual(selector selector.Selector, value ipld.Node) Statement {
-	return equality{KindGreaterThanOrEqual, selector, value}
+	return equality{kind: KindGreaterThanOrEqual, selector: selector, value: value}
 }
 
 func LessThan(selector selector.Selector, value ipld.Node) Statement {
-	return equality{KindLessThan, selector, value}
+	return equality{kind: KindLessThan, selector: selector, value: value}
 }
 
 func LessThanOrEqual(selector selector.Selector, value ipld.Node) Statement {
-	return equality{KindLessThanOrEqual, selector, value}
+	return equality{kind: KindLessThanOrEqual, selector: selector, value: value}
 }
 
 type negation struct {
@@ -68,7 +68,7 @@ func (n negation) Kind() string {
 }
 
 func Not(stmt Statement) Statement {
-	return negation{stmt}
+	return negation{statement: stmt}
 }
 
 type connective struct {
@@ -81,11 +81,11 @@ func (c connective) Kind() string {
 }
 
 func And(stmts ...Statement) Statement {
-	return connective{KindAnd, stmts}
+	return connective{kind: KindAnd, statements: stmts}
 }
 
 func Or(stmts ...Statement) Statement {
-	return connective{KindOr, stmts}
+	return connective{kind: KindOr, statements: stmts}
 }
 
 type wildcard struct {
@@ -103,23 +103,23 @@ func Like(selector selector.Selector, pattern string) (Statement, error) {
 	if err != nil {
 		return nil, err
 	}
-	return wildcard{selector, pattern, g}, nil
+	return wildcard{selector: selector, pattern: pattern, glob: g}, nil
 }
 
 type quantifier struct {
 	kind      string
 	selector  selector.Selector
-	statements []Statement
+	statement Statement
 }
 
 func (n quantifier) Kind() string {
 	return n.kind
 }
 
-func All(selector selector.Selector, policy ...Statement) Statement {
-	return quantifier{KindAll, selector, policy}
+func All(selector selector.Selector, statement Statement) Statement {
+	return quantifier{kind: KindAll, selector: selector, statement: statement}
 }
 
-func Any(selector selector.Selector, policy ...Statement) Statement {
-	return quantifier{KindAny, selector, policy}
+func Any(selector selector.Selector, statement Statement) Statement {
+	return quantifier{kind: KindAny, selector: selector, statement: statement}
 }