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Pass context through operators

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Allows more sophisticated functionality
This commit is contained in:
Mike Farah
2021-02-11 10:58:40 +11:00
parent 3bae44be68
commit c6efd5519b
40 changed files with 439 additions and 434 deletions
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pkg/yqlib/operator_pipe.go
+12 -5
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@@ -1,11 +1,18 @@
package yqlib
import "container/list"
func pipeOperator(d *dataTreeNavigator, context Context, expressionNode *ExpressionNode) (Context, error) {
func pipeOperator(d *dataTreeNavigator, matchingNodes *list.List, expressionNode *ExpressionNode) (*list.List, error) {
lhs, err := d.GetMatchingNodes(matchingNodes, expressionNode.Lhs)
//lhs may update the variable context, we should pass that into the RHS
// BUT we still return the original context back (see jq)
// https://stedolan.github.io/jq/manual/#Variable/SymbolicBindingOperator:...as$identifier|...
lhs, err := d.GetMatchingNodes(context, expressionNode.Lhs)
if err != nil {
return nil, err
return Context{}, err
}
return d.GetMatchingNodes(lhs, expressionNode.Rhs)
rhs, err := d.GetMatchingNodes(lhs, expressionNode.Rhs)
if err != nil {
return Context{}, err
}
return context.ChildContext(rhs.MatchingNodes), nil
}