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Extract out compound assign logic, use it add and subtract ops

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This commit is contained in:
Mike Farah 2021-07-07 20:00:46 +10:00
parent b4b2e1217a
commit cce3af001a
3 changed files with 28 additions and 26 deletions
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22
pkg/yqlib/operator_add.go
View File

@ -15,27 +15,7 @@ func createAddOp(lhs *ExpressionNode, rhs *ExpressionNode) *ExpressionNode {
}
func addAssignOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
lhs, err := d.GetMatchingNodes(context, expressionNode.Lhs)
if err != nil {
return Context{}, err
}
assignmentOp := &Operation{OperationType: assignOpType}
valueOp := &Operation{OperationType: valueOpType}
for el := lhs.MatchingNodes.Front(); el != nil; el = el.Next() {
candidate := el.Value.(*CandidateNode)
valueOp.CandidateNode = candidate
valueExpression := &ExpressionNode{Operation: valueOp}
assignmentOpNode := &ExpressionNode{Operation: assignmentOp, Lhs: valueExpression, Rhs: createAddOp(valueExpression, expressionNode.Rhs)}
_, err = d.GetMatchingNodes(context, assignmentOpNode)
if err != nil {
return Context{}, err
}
}
return context, nil
return compoundAssignFunction(d, context, expressionNode, createAddOp)
}
func toNodes(candidate *CandidateNode) []*yaml.Node {

6
pkg/yqlib/operator_subtract.go
View File

@ -15,11 +15,7 @@ func createSubtractOp(lhs *ExpressionNode, rhs *ExpressionNode) *ExpressionNode
}
func subtractAssignOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
assignmentOp := &Operation{OperationType: assignOpType}
assignmentOp.UpdateAssign = true
selfExpression := &ExpressionNode{Operation: &Operation{OperationType: selfReferenceOpType}}
assignmentOpNode := &ExpressionNode{Operation: assignmentOp, Lhs: expressionNode.Lhs, Rhs: createSubtractOp(selfExpression, expressionNode.Rhs)}
return d.GetMatchingNodes(context, assignmentOpNode)
return compoundAssignFunction(d, context, expressionNode, createSubtractOp)
}
func subtractOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {

26
pkg/yqlib/operators.go
View File

@ -10,6 +10,32 @@ import (
type operatorHandler func(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error)
type compoundCalculation func(lhs *ExpressionNode, rhs *ExpressionNode) *ExpressionNode
func compoundAssignFunction(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode, calculation compoundCalculation) (Context, error) {
lhs, err := d.GetMatchingNodes(context, expressionNode.Lhs)
if err != nil {
return Context{}, err
}
assignmentOp := &Operation{OperationType: assignOpType}
valueOp := &Operation{OperationType: valueOpType}
for el := lhs.MatchingNodes.Front(); el != nil; el = el.Next() {
candidate := el.Value.(*CandidateNode)
valueOp.CandidateNode = candidate
valueExpression := &ExpressionNode{Operation: valueOp}
assignmentOpNode := &ExpressionNode{Operation: assignmentOp, Lhs: valueExpression, Rhs: calculation(valueExpression, expressionNode.Rhs)}
_, err = d.GetMatchingNodes(context, assignmentOpNode)
if err != nil {
return Context{}, err
}
}
return context, nil
}
func unwrapDoc(node *yaml.Node) *yaml.Node {
if node.Kind == yaml.DocumentNode {
return node.Content[0]