yq/pkg/yqlib/operator_equals.go

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package yqlib
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import "gopkg.in/yaml.v3"
func equalsOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
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log.Debugf("-- equalsOperation")
return crossFunction(d, context, expressionNode, isEquals(false), true)
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}
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func isEquals(flip bool) func(d *dataTreeNavigator, context Context, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
return func(d *dataTreeNavigator, context Context, lhs *CandidateNode, rhs *CandidateNode) (*CandidateNode, error) {
value := false
log.Debugf("-- isEquals cross function")
if lhs == nil && rhs == nil {
owner := &CandidateNode{}
return createBooleanCandidate(owner, !flip), nil
} else if lhs == nil {
log.Debugf("lhs nil, but rhs is not")
rhsNode := unwrapDoc(rhs.Node)
value := rhsNode.Tag == "!!null"
if flip {
value = !value
}
return createBooleanCandidate(rhs, value), nil
} else if rhs == nil {
log.Debugf("lhs not nil, but rhs is")
lhsNode := unwrapDoc(lhs.Node)
value := lhsNode.Tag == "!!null"
if flip {
value = !value
}
return createBooleanCandidate(lhs, value), nil
}
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lhsNode := unwrapDoc(lhs.Node)
rhsNode := unwrapDoc(rhs.Node)
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if lhsNode.Tag == "!!null" {
value = (rhsNode.Tag == "!!null")
} else if lhsNode.Kind == yaml.ScalarNode && rhsNode.Kind == yaml.ScalarNode {
value = matchKey(lhsNode.Value, rhsNode.Value)
}
log.Debugf("%v == %v ? %v", NodeToString(lhs), NodeToString(rhs), value)
if flip {
value = !value
}
return createBooleanCandidate(lhs, value), nil
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}
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}
func notEqualsOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
log.Debugf("-- notEqualsOperator")
return crossFunction(d, context, expressionNode, isEquals(true), true)
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}