wip

go.mod

@@ -1,7 +1,7 @@
 module github.com/mikefarah/yq/v3
 
 require (
-	github.com/elliotchance/orderedmap v1.3.0
+	github.com/elliotchance/orderedmap v1.3.0 // indirect
 	github.com/fatih/color v1.9.0
 	github.com/goccy/go-yaml v1.8.1
 	github.com/kylelemons/godebug v1.1.0 // indirect

pkg/yqlib/treeops/data_tree_navigator.go

@@ -3,7 +3,8 @@ package treeops
 import (
 	"fmt"
 
-	"github.com/elliotchance/orderedmap"
+	"container/list"
+
 	"gopkg.in/op/go-logging.v1"
 )
 
@@ -24,10 +25,10 @@ func NewDataTreeNavigator(navigationPrefs NavigationPrefs) DataTreeNavigator {
 }
 
 func (d *dataTreeNavigator) GetMatchingNodes(matchingNodes []*CandidateNode, pathNode *PathTreeNode) ([]*CandidateNode, error) {
-	var matchingNodeMap = orderedmap.NewOrderedMap()
+	var matchingNodeMap = list.New()
 
 	for _, n := range matchingNodes {
-		matchingNodeMap.Set(n.GetKey(), n)
+		matchingNodeMap.PushBack(n)
 	}
 
 	matchedNodes, err := d.getMatchingNodes(matchingNodeMap, pathNode)
@@ -43,7 +44,7 @@ func (d *dataTreeNavigator) GetMatchingNodes(matchingNodes []*CandidateNode, pat
 	return values, nil
 }
 
-func (d *dataTreeNavigator) getMatchingNodes(matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func (d *dataTreeNavigator) getMatchingNodes(matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	if pathNode == nil {
 		log.Debugf("getMatchingNodes - nothing to do")
 		return matchingNodes, nil

pkg/yqlib/treeops/lib.go

@@ -2,9 +2,9 @@ package treeops
 
 import (
 	"bytes"
+	"container/list"
 	"fmt"
 
-	"github.com/elliotchance/orderedmap"
 	"gopkg.in/op/go-logging.v1"
 	"gopkg.in/yaml.v3"
 )
@@ -22,17 +22,18 @@ var Or = &OperationType{Type: "OR", NumArgs: 2, Precedence: 20, Handler: OrOpera
 var And = &OperationType{Type: "AND", NumArgs: 2, Precedence: 20, Handler: AndOperator}
 
 var Union = &OperationType{Type: "UNION", NumArgs: 2, Precedence: 10, Handler: UnionOperator}
-var Intersection = &OperationType{Type: "INTERSECTION", NumArgs: 2, Precedence: 20, Handler: IntersectionOperator}
 
 var Assign = &OperationType{Type: "ASSIGN", NumArgs: 2, Precedence: 40, Handler: AssignOperator}
 var AssignAttributes = &OperationType{Type: "ASSIGN_ATTRIBUTES", NumArgs: 2, Precedence: 40, Handler: AssignAttributesOperator}
 var Multiply = &OperationType{Type: "MULTIPLY", NumArgs: 2, Precedence: 40, Handler: MultiplyOperator}
 
 var Equals = &OperationType{Type: "EQUALS", NumArgs: 2, Precedence: 40, Handler: EqualsOperator}
+var CreateMap = &OperationType{Type: "CREATE_MAP", NumArgs: 2, Precedence: 40, Handler: CreateMapOperator}
 var Pipe = &OperationType{Type: "PIPE", NumArgs: 2, Precedence: 45, Handler: PipeOperator}
 
 var Length = &OperationType{Type: "LENGTH", NumArgs: 0, Precedence: 50, Handler: LengthOperator}
 var Collect = &OperationType{Type: "COLLECT", NumArgs: 0, Precedence: 50, Handler: CollectOperator}
+var CollectObject = &OperationType{Type: "COLLECT_OBJECT", NumArgs: 0, Precedence: 50, Handler: CollectObjectOperator}
 var TraversePath = &OperationType{Type: "TRAVERSE_PATH", NumArgs: 0, Precedence: 50, Handler: TraversePathOperator}
 
 var DocumentFilter = &OperationType{Type: "DOCUMENT_FILTER", NumArgs: 0, Precedence: 50, Handler: TraversePathOperator}
@@ -129,7 +130,7 @@ func (l *lib) Get(document int, documentNode *yaml.Node, path string) ([]*Candid
 }
 
 //use for debugging only
-func NodesToString(collection *orderedmap.OrderedMap) string {
+func NodesToString(collection *list.List) string {
 	if !log.IsEnabledFor(logging.DEBUG) {
 		return ""
 	}

pkg/yqlib/treeops/operation_collection_object_test.go

@@ -0,0 +1,2 @@
+package treeops
+

pkg/yqlib/treeops/operator_assign.go

@@ -1,8 +1,8 @@
 package treeops
 
-import "github.com/elliotchance/orderedmap"
+import "container/list"
 
-func AssignOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func AssignOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	lhs, err := d.getMatchingNodes(matchingNodes, pathNode.Lhs)
 	if err != nil {
 		return nil, err
@@ -27,7 +27,7 @@ func AssignOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap,
 }
 
 // does not update content or values
-func AssignAttributesOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func AssignAttributesOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	lhs, err := d.getMatchingNodes(matchingNodes, pathNode.Lhs)
 	if err != nil {
 		return nil, err

pkg/yqlib/treeops/operator_booleans.go

@@ -1,7 +1,8 @@
 package treeops
 
 import (
-	"github.com/elliotchance/orderedmap"
+	"container/list"
+
 	"gopkg.in/yaml.v3"
 )
 
@@ -23,8 +24,8 @@ func isTruthy(c *CandidateNode) (bool, error) {
 
 type boolOp func(bool, bool) bool
 
-func booleanOp(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode, op boolOp) (*orderedmap.OrderedMap, error) {
-	var results = orderedmap.NewOrderedMap()
+func booleanOp(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode, op boolOp) (*list.List, error) {
+	var results = list.New()
 
 	for el := matchingNodes.Front(); el != nil; el = el.Next() {
 		candidate := el.Value.(*CandidateNode)
@@ -52,7 +53,7 @@ func booleanOp(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathN
 				}
 				boolResult := createBooleanCandidate(lhsCandidate, op(lhsTrue, rhsTrue))
 
-				results.Set(boolResult.GetKey(), boolResult)
+				results.PushBack(boolResult)
 			}
 		}
 
@@ -60,14 +61,14 @@ func booleanOp(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathN
 	return results, nil
 }
 
-func OrOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func OrOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	log.Debugf("-- orOp")
 	return booleanOp(d, matchingNodes, pathNode, func(b1 bool, b2 bool) bool {
 		return b1 || b2
 	})
 }
 
-func AndOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func AndOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	log.Debugf("-- AndOp")
 	return booleanOp(d, matchingNodes, pathNode, func(b1 bool, b2 bool) bool {
 		return b1 && b2

pkg/yqlib/treeops/operator_booleans_test.go

@@ -21,6 +21,7 @@ var booleanOperatorScenarios = []expressionScenario{
 		document:   `{a: true, b: false}`,
 		expression: `.[] or (false, true)`,
 		expected: []string{
+			"D0, P[a], (!!bool)::true\n",
 			"D0, P[a], (!!bool)::true\n",
 			"D0, P[b], (!!bool)::false\n",
 			"D0, P[b], (!!bool)::true\n",

pkg/yqlib/treeops/operator_collect.go

@@ -1,14 +1,15 @@
 package treeops
 
 import (
-	"github.com/elliotchance/orderedmap"
+	"container/list"
+
 	"gopkg.in/yaml.v3"
 )
 
-func CollectOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func CollectOperator(d *dataTreeNavigator, matchMap *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	log.Debugf("-- collectOperation")
 
-	var results = orderedmap.NewOrderedMap()
+	var results = list.New()
 
 	node := &yaml.Node{Kind: yaml.SequenceNode, Tag: "!!seq"}
 
@@ -26,7 +27,7 @@ func CollectOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, path
 	}
 
 	collectC := &CandidateNode{Node: node, Document: document, Path: path}
-	results.Set(collectC.GetKey(), collectC)
+	results.PushBack(collectC)
 
 	return results, nil
 }

pkg/yqlib/treeops/operator_collect_object.go

@@ -0,0 +1,8 @@
+package treeops
+
+import "container/list"
+
+func CollectObjectOperator(d *dataTreeNavigator, matchMap *list.List, pathNode *PathTreeNode) (*list.List, error) {
+	log.Debugf("-- collectObjectOperation")
+	return nil, nil
+}

pkg/yqlib/treeops/operator_create_map.go

@@ -0,0 +1,43 @@
+package treeops
+
+import (
+	"container/list"
+
+	"gopkg.in/yaml.v3"
+)
+
+func CreateMapOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
+	log.Debugf("-- createMapOperation")
+	var path []interface{} = nil
+	var document uint = 0
+	if matchingNodes.Front() != nil {
+		sample := matchingNodes.Front().Value.(*CandidateNode)
+		path = sample.Path
+		document = sample.Document
+	}
+
+	mapPairs, err := crossFunction(d, matchingNodes, pathNode,
+		func(d *dataTreeNavigator, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
+			node := yaml.Node{Kind: yaml.MappingNode, Tag: "!!map"}
+			log.Debugf("LHS:", lhs.Node.Value)
+			log.Debugf("RHS:", rhs.Node.Value)
+			node.Content = []*yaml.Node{
+				lhs.Node,
+				rhs.Node,
+			}
+
+			return &CandidateNode{Node: &node, Document: document, Path: path}, nil
+		})
+
+	if err != nil {
+		return nil, err
+	}
+	//wrap up all the pairs into an array
+	node := yaml.Node{Kind: yaml.SequenceNode, Tag: "!!seq"}
+	for mapPair := mapPairs.Front(); mapPair != nil; mapPair = mapPair.Next() {
+		mapPairCandidate := mapPair.Value.(*CandidateNode)
+		log.Debugf("Collecting %v into sequence", NodeToString(mapPairCandidate))
+		node.Content = append(node.Content, mapPairCandidate.Node)
+	}
+	return nodeToMap(&CandidateNode{Node: &node, Document: document, Path: path}), nil
+}

pkg/yqlib/treeops/operator_create_map_test.go

@@ -0,0 +1,28 @@
+package treeops
+
+import (
+	"testing"
+)
+
+var createMapOperatorScenarios = []expressionScenario{
+	{
+		document:   `{name: Mike, age: 32}`,
+		expression: `.name: .age`,
+		expected: []string{
+			"D0, P[], (!!seq)::- Mike: 32\n",
+		},
+	},
+	{
+		document:   `{name: Mike, pets: [cat, dog]}`,
+		expression: `.name: .pets[]`,
+		expected: []string{
+			"D0, P[], (!!seq)::- Mike: cat\n- Mike: dog\n",
+		},
+	},
+}
+
+func TestCreateMapOperatorScenarios(t *testing.T) {
+	for _, tt := range createMapOperatorScenarios {
+		testScenario(t, &tt)
+	}
+}

pkg/yqlib/treeops/operator_delete.go

@@ -1,11 +1,12 @@
 package treeops
 
 import (
-	"github.com/elliotchance/orderedmap"
+	"container/list"
+
 	"gopkg.in/yaml.v3"
 )
 
-func DeleteChildOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func DeleteChildOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	lhs, err := d.getMatchingNodes(matchingNodes, pathNode.Lhs)
 	if err != nil {
 		return nil, err
@@ -16,8 +17,8 @@ func DeleteChildOperator(d *dataTreeNavigator, matchingNodes *orderedmap.Ordered
 
 	for el := lhs.Front(); el != nil; el = el.Next() {
 		candidate := el.Value.(*CandidateNode)
-		elMap := orderedmap.NewOrderedMap()
-		elMap.Set(candidate.GetKey(), candidate)
+		elMap := list.New()
+		elMap.PushBack(candidate)
 		nodesToDelete, err := d.getMatchingNodes(elMap, pathNode.Rhs)
 		log.Debug("nodesToDelete:\n%v", NodesToString(nodesToDelete))
 		if err != nil {
@@ -35,7 +36,7 @@ func DeleteChildOperator(d *dataTreeNavigator, matchingNodes *orderedmap.Ordered
 	return lhs, nil
 }
 
-func deleteFromMap(candidate *CandidateNode, nodesToDelete *orderedmap.OrderedMap) {
+func deleteFromMap(candidate *CandidateNode, nodesToDelete *list.List) {
 	log.Debug("deleteFromMap")
 	node := candidate.Node
 	contents := node.Content
@@ -50,7 +51,8 @@ func deleteFromMap(candidate *CandidateNode, nodesToDelete *orderedmap.OrderedMa
 			Document: candidate.Document,
 			Path:     append(candidate.Path, key.Value),
 		}
-		_, shouldDelete := nodesToDelete.Get(childCandidate.GetKey())
+		// _, shouldDelete := nodesToDelete.Get(childCandidate.GetKey())
+		shouldDelete := true
 
 		log.Debugf("shouldDelete %v ? %v", childCandidate.GetKey(), shouldDelete)
 
@@ -61,7 +63,7 @@ func deleteFromMap(candidate *CandidateNode, nodesToDelete *orderedmap.OrderedMa
 	node.Content = newContents
 }
 
-func deleteFromArray(candidate *CandidateNode, nodesToDelete *orderedmap.OrderedMap) {
+func deleteFromArray(candidate *CandidateNode, nodesToDelete *list.List) {
 	log.Debug("deleteFromArray")
 	node := candidate.Node
 	contents := node.Content
@@ -70,13 +72,14 @@ func deleteFromArray(candidate *CandidateNode, nodesToDelete *orderedmap.Ordered
 	for index := 0; index < len(contents); index = index + 1 {
 		value := contents[index]
 
-		childCandidate := &CandidateNode{
-			Node:     value,
-			Document: candidate.Document,
-			Path:     append(candidate.Path, index),
-		}
+		// childCandidate := &CandidateNode{
+		// 	Node:     value,
+		// 	Document: candidate.Document,
+		// 	Path:     append(candidate.Path, index),
+		// }
 
-		_, shouldDelete := nodesToDelete.Get(childCandidate.GetKey())
+		// _, shouldDelete := nodesToDelete.Get(childCandidate.GetKey())
+		shouldDelete := true
 		if !shouldDelete {
 			newContents = append(newContents, value)
 		}

pkg/yqlib/treeops/operator_equals.go

@@ -1,10 +1,10 @@
 package treeops
 
 import (
-	"github.com/elliotchance/orderedmap"
+	"container/list"
 )
 
-func EqualsOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func EqualsOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	log.Debugf("-- equalsOperation")
 	return crossFunction(d, matchingNodes, pathNode, isEquals)
 }

pkg/yqlib/treeops/operator_equals_test.go

@@ -5,35 +5,30 @@ import (
 )
 
 var equalsOperatorScenarios = []expressionScenario{
-	// {
-	// 	document:   `[cat,goat,dog]`,
-	// 	expression: `(.[] == "*at")`,
-	// 	expected: []string{
-	// 		"D0, P[], (!!bool)::true\n",
-	// 	},
-	// }, {
-	// 	document:   `[cat,goat,dog]`,
-	// 	expression: `.[] | (. == "*at")`,
-	// 	expected: []string{
-	// 		"D0, P[0], (!!bool)::true\n",
-	// 		"D0, P[1], (!!bool)::true\n",
-	// 		"D0, P[2], (!!bool)::false\n",
-	// 	},
-	// }, {
-	// 	document:   `[3, 4, 5]`,
-	// 	expression: `.[] | (. == 4)`,
-	// 	expected: []string{
-	// 		"D0, P[0], (!!bool)::false\n",
-	// 		"D0, P[1], (!!bool)::true\n",
-	// 		"D0, P[2], (!!bool)::false\n",
-	// 	},
-	// }, {
-	// 	document:   `a: { cat: {b: apple, c: whatever}, pat: {b: banana} }`,
-	// 	expression: `.a | (.[].b == "apple")`,
-	// 	expected: []string{
-	// 		"D0, P[a], (!!bool)::true\n",
-	// 	},
-	// },
+	{
+		document:   `[cat,goat,dog]`,
+		expression: `.[] | (. == "*at")`,
+		expected: []string{
+			"D0, P[0], (!!bool)::true\n",
+			"D0, P[1], (!!bool)::true\n",
+			"D0, P[2], (!!bool)::false\n",
+		},
+	}, {
+		document:   `[3, 4, 5]`,
+		expression: `.[] | (. == 4)`,
+		expected: []string{
+			"D0, P[0], (!!bool)::false\n",
+			"D0, P[1], (!!bool)::true\n",
+			"D0, P[2], (!!bool)::false\n",
+		},
+	}, {
+		document:   `a: { cat: {b: apple, c: whatever}, pat: {b: banana} }`,
+		expression: `.a | (.[].b == "apple")`,
+		expected: []string{
+			"D0, P[a cat b], (!!bool)::true\n",
+			"D0, P[a pat b], (!!bool)::false\n",
+		},
+	},
 	{
 		document:   ``,
 		expression: `null == null`,
@@ -41,13 +36,13 @@ var equalsOperatorScenarios = []expressionScenario{
 			"D0, P[], (!!bool)::true\n",
 		},
 	},
-	// {
-	// 	document:   ``,
-	// 	expression: `null == ~`,
-	// 	expected: []string{
-	// 		"D0, P[], (!!bool)::true\n",
-	// 	},
-	// },
+	{
+		document:   ``,
+		expression: `null == ~`,
+		expected: []string{
+			"D0, P[], (!!bool)::true\n",
+		},
+	},
 }
 
 func TestEqualOperatorScenarios(t *testing.T) {

pkg/yqlib/treeops/operator_multilpy.go

@@ -3,13 +3,14 @@ package treeops
 import (
 	"fmt"
 
-	"github.com/elliotchance/orderedmap"
+	"container/list"
+
 	"gopkg.in/yaml.v3"
 )
 
 type CrossFunctionCalculation func(d *dataTreeNavigator, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error)
 
-func crossFunction(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode, calculation CrossFunctionCalculation) (*orderedmap.OrderedMap, error) {
+func crossFunction(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode, calculation CrossFunctionCalculation) (*list.List, error) {
 	lhs, err := d.getMatchingNodes(matchingNodes, pathNode.Lhs)
 	if err != nil {
 		return nil, err
@@ -21,7 +22,7 @@ func crossFunction(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, p
 		return nil, err
 	}
 
-	var results = orderedmap.NewOrderedMap()
+	var results = list.New()
 
 	for el := lhs.Front(); el != nil; el = el.Next() {
 		lhsCandidate := el.Value.(*CandidateNode)
@@ -32,14 +33,14 @@ func crossFunction(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, p
 			if err != nil {
 				return nil, err
 			}
-			results.Set(resultCandidate.GetKey(), resultCandidate)
+			results.PushBack(resultCandidate)
 		}
 
 	}
 	return results, nil
 }
 
-func MultiplyOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func MultiplyOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	log.Debugf("-- MultiplyOperator")
 	return crossFunction(d, matchingNodes, pathNode, multiply)
 }
@@ -47,7 +48,7 @@ func MultiplyOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap
 func multiply(d *dataTreeNavigator, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
 	if lhs.Node.Kind == yaml.MappingNode && rhs.Node.Kind == yaml.MappingNode ||
 		(lhs.Node.Kind == yaml.SequenceNode && rhs.Node.Kind == yaml.SequenceNode) {
-		var results = orderedmap.NewOrderedMap()
+		var results = list.New()
 		recursiveDecent(d, results, nodeToMap(rhs))
 
 		var pathIndexToStartFrom int = 0

pkg/yqlib/treeops/operator_not.go

@@ -1,10 +1,10 @@
 package treeops
 
-import "github.com/elliotchance/orderedmap"
+import "container/list"
 
-func NotOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func NotOperator(d *dataTreeNavigator, matchMap *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	log.Debugf("-- notOperation")
-	var results = orderedmap.NewOrderedMap()
+	var results = list.New()
 
 	for el := matchMap.Front(); el != nil; el = el.Next() {
 		candidate := el.Value.(*CandidateNode)
@@ -14,7 +14,7 @@ func NotOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathNode
 			return nil, errDecoding
 		}
 		result := createBooleanCandidate(candidate, !truthy)
-		results.Set(result.GetKey(), result)
+		results.PushBack(result)
 	}
 	return results, nil
 }

pkg/yqlib/treeops/operator_recursive_descent.go

@@ -1,11 +1,11 @@
 package treeops
 
 import (
-	"github.com/elliotchance/orderedmap"
+	"container/list"
 )
 
-func RecursiveDescentOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
-	var results = orderedmap.NewOrderedMap()
+func RecursiveDescentOperator(d *dataTreeNavigator, matchMap *list.List, pathNode *PathTreeNode) (*list.List, error) {
+	var results = list.New()
 
 	err := recursiveDecent(d, results, matchMap)
 	if err != nil {
@@ -15,13 +15,13 @@ func RecursiveDescentOperator(d *dataTreeNavigator, matchMap *orderedmap.Ordered
 	return results, nil
 }
 
-func recursiveDecent(d *dataTreeNavigator, results *orderedmap.OrderedMap, matchMap *orderedmap.OrderedMap) error {
+func recursiveDecent(d *dataTreeNavigator, results *list.List, matchMap *list.List) error {
 	splatOperation := &Operation{OperationType: TraversePath, Value: "[]"}
 	splatTreeNode := &PathTreeNode{Operation: splatOperation}
 
 	for el := matchMap.Front(); el != nil; el = el.Next() {
 		candidate := el.Value.(*CandidateNode)
-		results.Set(candidate.GetKey(), candidate)
+		results.PushBack(candidate)
 
 		children, err := TraversePathOperator(d, nodeToMap(candidate), splatTreeNode)
 

pkg/yqlib/treeops/operator_select.go

@@ -1,13 +1,13 @@
 package treeops
 
 import (
-	"github.com/elliotchance/orderedmap"
+	"container/list"
 )
 
-func SelectOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func SelectOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 
 	log.Debugf("-- selectOperation")
-	var results = orderedmap.NewOrderedMap()
+	var results = list.New()
 
 	for el := matchingNodes.Front(); el != nil; el = el.Next() {
 		candidate := el.Value.(*CandidateNode)
@@ -29,7 +29,7 @@ func SelectOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap,
 			}
 
 			if includeResult {
-				results.Set(candidate.GetKey(), candidate)
+				results.PushBack(candidate)
 			}
 		}
 	}

pkg/yqlib/treeops/operator_self.go

@@ -1,7 +1,7 @@
 package treeops
 
-import "github.com/elliotchance/orderedmap"
+import "container/list"
 
-func SelfOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func SelfOperator(d *dataTreeNavigator, matchMap *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	return matchMap, nil
 }

pkg/yqlib/treeops/operator_traverse_path.go

@@ -3,13 +3,14 @@ package treeops
 import (
 	"fmt"
 
-	"github.com/elliotchance/orderedmap"
+	"container/list"
+
 	"gopkg.in/yaml.v3"
 )
 
-func TraversePathOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func TraversePathOperator(d *dataTreeNavigator, matchMap *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	log.Debugf("-- Traversing")
-	var matchingNodeMap = orderedmap.NewOrderedMap()
+	var matchingNodeMap = list.New()
 	var newNodes []*CandidateNode
 	var err error
 
@@ -19,7 +20,7 @@ func TraversePathOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap,
 			return nil, err
 		}
 		for _, n := range newNodes {
-			matchingNodeMap.Set(n.GetKey(), n)
+			matchingNodeMap.PushBack(n)
 		}
 	}
 
@@ -30,7 +31,7 @@ func traverse(d *dataTreeNavigator, matchingNode *CandidateNode, pathNode *Opera
 	log.Debug("Traversing %v", NodeToString(matchingNode))
 	value := matchingNode.Node
 
-	if value.Kind == 0 {
+	if value.Tag == "!!null" {
 		log.Debugf("Guessing kind")
 		// we must ahve added this automatically, lets guess what it should be now
 		switch pathNode.Value.(type) {
@@ -41,6 +42,7 @@ func traverse(d *dataTreeNavigator, matchingNode *CandidateNode, pathNode *Opera
 			log.Debugf("probabel a map")
 			value.Kind = yaml.MappingNode
 		}
+		value.Tag = ""
 	}
 
 	switch value.Kind {
@@ -110,7 +112,7 @@ func traverseMap(candidate *CandidateNode, pathNode *Operation) ([]*CandidateNod
 	}
 	if len(newMatches) == 0 {
 		//no matches, create one automagically
-		valueNode := &yaml.Node{Tag: "!!null"}
+		valueNode := &yaml.Node{Tag: "!!null", Kind: yaml.ScalarNode, Value: "null"}
 		node.Content = append(node.Content, &yaml.Node{Kind: yaml.ScalarNode, Value: pathNode.StringValue}, valueNode)
 		newMatches = append(newMatches, &CandidateNode{
 			Node:     valueNode,
@@ -145,7 +147,7 @@ func traverseArray(candidate *CandidateNode, pathNode *Operation) ([]*CandidateN
 	indexToUse := index
 	contentLength := int64(len(candidate.Node.Content))
 	for contentLength <= index {
-		candidate.Node.Content = append(candidate.Node.Content, &yaml.Node{Tag: "!!null"})
+		candidate.Node.Content = append(candidate.Node.Content, &yaml.Node{Tag: "!!null", Kind: yaml.ScalarNode, Value: "null"})
 		contentLength = int64(len(candidate.Node.Content))
 	}
 

pkg/yqlib/treeops/operator_traverse_path_test.go

@@ -24,21 +24,21 @@ var traversePathOperatorScenarios = []expressionScenario{
 		document:   `{}`,
 		expression: `.a.b`,
 		expected: []string{
-			"D0, P[a b], ()::null\n",
+			"D0, P[a b], (!!null)::null\n",
 		},
 	},
 	{
 		document:   `{}`,
 		expression: `.[1].a`,
 		expected: []string{
-			"D0, P[1 a], ()::null\n",
+			"D0, P[1 a], (!!null)::null\n",
 		},
 	},
 	{
 		document:   `{}`,
 		expression: `.a.[1]`,
 		expected: []string{
-			"D0, P[a 1], ()::null\n",
+			"D0, P[a 1], (!!null)::null\n",
 		},
 	},
 	{
@@ -55,7 +55,7 @@ var traversePathOperatorScenarios = []expressionScenario{
 		expected: []string{
 			"D0, P[a cat b], (!!int)::3\n",
 			"D0, P[a mad b], (!!int)::4\n",
-			"D0, P[a fad b], ()::null\n",
+			"D0, P[a fad b], (!!null)::null\n",
 		},
 	},
 	{
@@ -72,7 +72,7 @@ var traversePathOperatorScenarios = []expressionScenario{
 		expected: []string{
 			"D0, P[a cat], (!!str)::apple\n",
 			"D0, P[a mad], (!!str)::things\n",
-			"D0, P[a fad], ()::null\n",
+			"D0, P[a fad], (!!null)::null\n",
 		},
 	},
 	{

pkg/yqlib/treeops/operator_union.go

@@ -1,8 +1,8 @@
 package treeops
 
-import "github.com/elliotchance/orderedmap"
+import "container/list"
 
-func UnionOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func UnionOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	lhs, err := d.getMatchingNodes(matchingNodes, pathNode.Lhs)
 	if err != nil {
 		return nil, err
@@ -13,7 +13,7 @@ func UnionOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, p
 	}
 	for el := rhs.Front(); el != nil; el = el.Next() {
 		node := el.Value.(*CandidateNode)
-		lhs.Set(node.GetKey(), node)
+		lhs.PushBack(node)
 	}
 	return lhs, nil
 }

pkg/yqlib/treeops/operator_value.go

@@ -1,8 +1,8 @@
 package treeops
 
-import "github.com/elliotchance/orderedmap"
+import "container/list"
 
-func ValueOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func ValueOperator(d *dataTreeNavigator, matchMap *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	log.Debug("value = %v", pathNode.Operation.CandidateNode.Node.Value)
 	return nodeToMap(pathNode.Operation.CandidateNode), nil
 }

pkg/yqlib/treeops/operators.go

@@ -1,15 +1,15 @@
 package treeops
 
 import (
+	"container/list"
 	"fmt"
 
-	"github.com/elliotchance/orderedmap"
 	"gopkg.in/yaml.v3"
 )
 
-type OperatorHandler func(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error)
+type OperatorHandler func(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error)
 
-func PipeOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func PipeOperator(d *dataTreeNavigator, matchingNodes *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	lhs, err := d.getMatchingNodes(matchingNodes, pathNode.Lhs)
 	if err != nil {
 		return nil, err
@@ -26,34 +26,15 @@ func createBooleanCandidate(owner *CandidateNode, value bool) *CandidateNode {
 	return &CandidateNode{Node: node, Document: owner.Document, Path: owner.Path}
 }
 
-func nodeToMap(candidate *CandidateNode) *orderedmap.OrderedMap {
-	elMap := orderedmap.NewOrderedMap()
-	elMap.Set(candidate.GetKey(), candidate)
+func nodeToMap(candidate *CandidateNode) *list.List {
+	elMap := list.New()
+	elMap.PushBack(candidate)
 	return elMap
 }
 
-func IntersectionOperator(d *dataTreeNavigator, matchingNodes *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
-	lhs, err := d.getMatchingNodes(matchingNodes, pathNode.Lhs)
-	if err != nil {
-		return nil, err
-	}
-	rhs, err := d.getMatchingNodes(matchingNodes, pathNode.Rhs)
-	if err != nil {
-		return nil, err
-	}
-	var matchingNodeMap = orderedmap.NewOrderedMap()
-	for el := lhs.Front(); el != nil; el = el.Next() {
-		_, exists := rhs.Get(el.Key)
-		if exists {
-			matchingNodeMap.Set(el.Key, el.Value)
-		}
-	}
-	return matchingNodeMap, nil
-}
-
-func LengthOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathNode *PathTreeNode) (*orderedmap.OrderedMap, error) {
+func LengthOperator(d *dataTreeNavigator, matchMap *list.List, pathNode *PathTreeNode) (*list.List, error) {
 	log.Debugf("-- lengthOperation")
-	var results = orderedmap.NewOrderedMap()
+	var results = list.New()
 
 	for el := matchMap.Front(); el != nil; el = el.Next() {
 		candidate := el.Value.(*CandidateNode)
@@ -71,7 +52,7 @@ func LengthOperator(d *dataTreeNavigator, matchMap *orderedmap.OrderedMap, pathN
 
 		node := &yaml.Node{Kind: yaml.ScalarNode, Value: fmt.Sprintf("%v", length), Tag: "!!int"}
 		lengthCand := &CandidateNode{Node: node, Document: candidate.Document, Path: candidate.Path}
-		results.Set(candidate.GetKey(), lengthCand)
+		results.PushBack(lengthCand)
 	}
 
 	return results, nil

pkg/yqlib/treeops/path_parse_test.go

@@ -59,6 +59,16 @@ var pathTests = []struct {
 		append(make([]interface{}, 0), "[", "true (bool)", "]"),
 		append(make([]interface{}, 0), "true (bool)", "COLLECT", "PIPE"),
 	},
+	{
+		`"mike": .a`,
+		append(make([]interface{}, 0), "mike (string)", "CREATE_MAP", "a"),
+		append(make([]interface{}, 0), "mike (string)", "a", "CREATE_MAP"),
+	},
+	{
+		`.a: "mike"`,
+		append(make([]interface{}, 0), "a", "CREATE_MAP", "mike (string)"),
+		append(make([]interface{}, 0), "a", "mike (string)", "CREATE_MAP"),
+	},
 
 	// {".animals | .==cat", append(make([]interface{}, 0), "animals", "TRAVERSE", "SELF", "EQUALS", "cat")},
 	// {".animals | (. == cat)", append(make([]interface{}, 0), "animals", "TRAVERSE", "(", "SELF", "EQUALS", "cat", ")")},

pkg/yqlib/treeops/path_tokeniser.go

@@ -20,6 +20,8 @@ const (
 	CloseBracket
 	OpenCollect
 	CloseCollect
+	OpenCollectObject
+	CloseCollectObject
 )
 
 type Token struct {
@@ -40,6 +42,10 @@ func (t *Token) toString() string {
 		return "["
 	} else if t.TokenType == CloseCollect {
 		return "]"
+	} else if t.TokenType == OpenCollectObject {
+		return "{"
+	} else if t.TokenType == CloseCollectObject {
+		return "}"
 	} else {
 		return fmt.Sprintf("NFI")
 	}
@@ -174,6 +180,7 @@ func initLexer() (*lex.Lexer, error) {
 	lexer.Add([]byte(`\.\.`), opToken(RecursiveDescent))
 
 	lexer.Add([]byte(`,`), opToken(Union))
+	lexer.Add([]byte(`:\s*`), opToken(CreateMap))
 	lexer.Add([]byte(`length`), opToken(Length))
 	lexer.Add([]byte(`select`), opToken(Select))
 	lexer.Add([]byte(`or`), opToken(Or))
@@ -195,7 +202,7 @@ func initLexer() (*lex.Lexer, error) {
 	lexer.Add([]byte(`d[0-9]+`), documentToken()) // $0
 
 	lexer.Add([]byte(`\."[^ "]+"`), pathToken(true))
-	lexer.Add([]byte(`\.[^ \[\],\|\.\[\(\)=]+`), pathToken(false))
+	lexer.Add([]byte(`\.[^ \}\{\:\[\],\|\.\[\(\)=]+`), pathToken(false))
 	lexer.Add([]byte(`\.`), selfToken())
 
 	lexer.Add([]byte(`\|`), opToken(Pipe))
@@ -214,6 +221,8 @@ func initLexer() (*lex.Lexer, error) {
 
 	lexer.Add([]byte(`\[`), literalToken(OpenCollect, false))
 	lexer.Add([]byte(`\]`), literalToken(CloseCollect, true))
+	lexer.Add([]byte(`\{`), literalToken(OpenCollectObject, false))
+	lexer.Add([]byte(`\}`), literalToken(CloseCollectObject, true))
 	lexer.Add([]byte(`\*`), opToken(Multiply))
 
 	// lexer.Add([]byte(`[^ \,\|\.\[\(\)=]+`), stringValue(false))

pkg/yqlib/treeops/sample.yaml

@@ -1 +1 @@
-{a: {also: [1]}, b: {also: me}}
+{name: Mike, pets: [cat, dog]}

pkg/yqlib/treeops/temp.json

@@ -1,10 +1,7 @@
 {
-  "a": {
-    "also": [
-      1
-    ]
-  },
-  "b": {
-    "also": "me"
-  }
+  "name": "Mike",
+  "pets": [
+    "cat",
+    "dog"
+  ]
 }