71 lines
1.8 KiB
Go
71 lines
1.8 KiB
Go
// Copyright 2019 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package expression
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import (
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"github.com/pingcap/tidb/pkg/util/chunk"
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)
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func (b *builtinLikeSig) vectorized() bool {
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return true
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}
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func (b *builtinLikeSig) vecEvalInt(ctx EvalContext, input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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bufVal, err := b.bufAllocator.get()
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if err != nil {
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return err
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}
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defer b.bufAllocator.put(bufVal)
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if err = b.args[0].VecEvalString(ctx, input, bufVal); err != nil {
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return err
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}
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bufPattern, err := b.bufAllocator.get()
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if err != nil {
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return err
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}
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defer b.bufAllocator.put(bufPattern)
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if err = b.args[1].VecEvalString(ctx, input, bufPattern); err != nil {
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return err
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}
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bufEscape, err := b.bufAllocator.get()
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if err != nil {
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return err
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}
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defer b.bufAllocator.put(bufEscape)
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if err = b.args[2].VecEvalInt(ctx, input, bufEscape); err != nil {
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return err
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}
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escapes := bufEscape.Int64s()
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// Must not use b.pattern to avoid data race
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pattern := b.collator().Pattern()
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result.ResizeInt64(n, false)
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result.MergeNulls(bufVal, bufPattern, bufEscape)
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i64s := result.Int64s()
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for i := range n {
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if result.IsNull(i) {
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continue
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}
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pattern.Compile(bufPattern.GetString(i), byte(escapes[i]))
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match := pattern.DoMatch(bufVal.GetString(i))
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i64s[i] = boolToInt64(match)
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}
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return nil
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}
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