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op_filter.go
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op_filter.go
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// Copyright (c) 2019 Couchbase, Inc.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the
// License. You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an "AS
// IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
// express or implied. See the License for the specific language
// governing permissions and limitations under the License.
package n1k1
import (
"github.com/couchbase/n1k1/base"
)
func OpFilter(o *base.Op, lzVars *base.Vars, lzYieldVals base.YieldVals,
lzYieldErr base.YieldErr, path, pathNext string) {
if LzScope {
pathNextF := EmitPush(pathNext, "F") // !lz
exprFunc :=
MakeExprFunc(lzVars, o.Children[0].Labels, o.Params, pathNextF, "FF") // !lz
lzYieldValsOrig := lzYieldVals
lzYieldVals = func(lzVals base.Vals) {
var lzVal base.Val
lzVal = exprFunc(lzVals, lzYieldErr) // <== emitCaptured: pathNextF "FF"
if base.ValEqualTrue(lzVal) {
lzYieldValsOrig(lzVals) // <== emitCaptured: path ""
}
}
EmitPop(pathNext, "F") // !lz
ExecOp(o.Children[0], lzVars, lzYieldVals, lzYieldErr, pathNextF, "") // !lz
}
}