265 lines
7.0 KiB
Go
265 lines
7.0 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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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build ignore
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package main
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import (
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"bytes"
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"flag"
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"go/format"
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"io/ioutil"
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"log"
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"path/filepath"
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"text/template"
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)
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const header = `// 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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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Code generated by go generate in expression/generator; DO NOT EDIT.
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package expression
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`
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const newLine = "\n"
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const builtinControlImports = `import (
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util/chunk"
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)
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`
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var builtinIfVec = template.Must(template.New("").Parse(`
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func (b *builtinIf{{ .TypeName }}Sig) vecEval{{ .TypeName }}(input *chunk.Chunk, result *chunk.Column) error {
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n := input.NumRows()
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buf0, err := b.bufAllocator.get(types.ETInt, n)
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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(buf0)
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if err := b.args[0].VecEvalInt(b.ctx, input, buf0); err != nil {
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return err
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}
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buf1, err := b.bufAllocator.get(types.ET{{ .ETName }}, n)
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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(buf1)
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if err := b.args[1].VecEval{{ .TypeName }}(b.ctx, input, buf1); err != nil {
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return err
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}
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buf2, err := b.bufAllocator.get(types.ET{{ .ETName }}, n)
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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(buf2)
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if err := b.args[2].VecEval{{ .TypeName }}(b.ctx, input, buf2); err != nil {
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return err
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}
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{{ if .Fixed }}
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result.Resize{{ .TypeNameInColumn }}(n, false)
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{{ else }}
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result.Reserve{{ .TypeNameInColumn }}(n)
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{{ end }}
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arg0 := buf0.Int64s()
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{{ if .Fixed }}
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arg1 := buf1.{{ .TypeNameInColumn }}s()
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arg2 := buf2.{{ .TypeNameInColumn }}s()
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rs := result.{{ .TypeNameInColumn }}s()
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{{ end }}
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for i := 0; i < n; i++ {
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arg := arg0[i]
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isNull0 := buf0.IsNull(i)
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switch {
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case isNull0 || arg == 0:
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{{ if .Fixed }}
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if buf2.IsNull(i) {
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result.SetNull(i, true)
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} else {
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rs[i] = arg2[i]
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}
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{{ else }}
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if buf2.IsNull(i) {
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result.AppendNull()
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} else {
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result.Append{{ .TypeNameInColumn }}(buf2.Get{{ .TypeNameInColumn }}(i))
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}
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{{ end }}
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case arg != 0:
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{{ if .Fixed }}
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if buf1.IsNull(i) {
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result.SetNull(i, true)
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} else {
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rs[i] = arg1[i]
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}
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{{ else }}
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if buf1.IsNull(i) {
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result.AppendNull()
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} else {
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result.Append{{ .TypeNameInColumn }}(buf1.Get{{ .TypeNameInColumn }}(i))
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}
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{{ end }}
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}
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}
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return nil
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}
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func (b *builtinIf{{ .TypeName }}Sig) vectorized() bool {
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return true
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}
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`))
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var builtinControlVecTest = template.Must(template.New("").Parse(`
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import (
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"testing"
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. "github.com/pingcap/check"
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"github.com/pingcap/parser/ast"
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"github.com/pingcap/tidb/types"
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)
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{{/* Add more test cases here if we have more functions in this file */}}
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var vecBuiltinControlCases = map[string][]vecExprBenchCase{
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ast.If: {
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{{ range . }}
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{types.ET{{ .ETName }}, []types.EvalType{types.ETInt, types.ET{{ .ETName }}, types.ET{{ .ETName }}}, nil},
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{{ end }}
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},
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}
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func (s *testEvaluatorSuite) TestVectorizedBuiltinControlEvalOneVec(c *C) {
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testVectorizedEvalOneVec(c, vecBuiltinControlCases)
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}
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func (s *testEvaluatorSuite) TestVectorizedBuiltinControlFunc(c *C) {
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testVectorizedBuiltinFunc(c, vecBuiltinControlCases)
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}
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func BenchmarkVectorizedBuiltinControlEvalOneVec(b *testing.B) {
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benchmarkVectorizedEvalOneVec(b, vecBuiltinControlCases)
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}
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func BenchmarkVectorizedBuiltinControlFunc(b *testing.B) {
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benchmarkVectorizedBuiltinFunc(b, vecBuiltinControlCases)
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}
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`))
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type typeContext struct {
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// Describe the name of "github.com/pingcap/tidb/types".ET{{ .ETName }}
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ETName string
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// Describe the name of "github.com/pingcap/tidb/expression".VecExpr.VecEval{{ .TypeName }}
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// If undefined, it's same as ETName.
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TypeName string
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// Describe the name of "github.com/pingcap/tidb/util/chunk".*Column.Append{{ .TypeNameInColumn }},
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// Resize{{ .TypeNameInColumn }}, Reserve{{ .TypeNameInColumn }}, Get{{ .TypeNameInColumn }} and
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// {{ .TypeNameInColumn }}s.
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// If undefined, it's same as TypeName.
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TypeNameInColumn string
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// Same as "github.com/pingcap/tidb/util/chunk".getFixedLen()
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Fixed bool
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}
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var typesMap = []typeContext{
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{ETName: "Int", TypeNameInColumn: "Int64", Fixed: true},
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{ETName: "Real", TypeNameInColumn: "Float64", Fixed: true},
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{ETName: "Decimal", Fixed: true},
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{ETName: "String", Fixed: false},
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{ETName: "Datetime", TypeName: "Time", Fixed: true},
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{ETName: "Duration", TypeNameInColumn: "GoDuration", Fixed: true},
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{ETName: "Json", TypeName: "JSON", Fixed: false},
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}
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func generateDotGo(fileName string, imports string, types []typeContext, tmpls ...*template.Template) error {
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w := new(bytes.Buffer)
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w.WriteString(header)
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w.WriteString(newLine)
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w.WriteString(imports)
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for _, tmpl := range tmpls {
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for _, ctx := range types {
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if ctx.TypeName == "" {
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ctx.TypeName = ctx.ETName
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}
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if ctx.TypeNameInColumn == "" {
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ctx.TypeNameInColumn = ctx.TypeName
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}
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err := tmpl.Execute(w, ctx)
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if err != nil {
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return err
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}
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}
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}
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data, err := format.Source(w.Bytes())
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if err != nil {
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log.Println("[Warn]", fileName+": gofmt failed", err)
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data = w.Bytes() // write original data for debugging
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}
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return ioutil.WriteFile(fileName, data, 0644)
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}
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func generateTestDotGo(fileName string, types []typeContext) error {
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w := new(bytes.Buffer)
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w.WriteString(header)
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err := builtinControlVecTest.Execute(w, types)
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if err != nil {
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return err
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}
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data, err := format.Source(w.Bytes())
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if err != nil {
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log.Println("[Warn]", fileName+": gofmt failed", err)
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data = w.Bytes() // write original data for debugging
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}
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return ioutil.WriteFile(fileName, data, 0644)
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}
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// generateOneFile generate one xxx.go file and the associated xxx_test.go file.
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func generateOneFile(fileNamePrefix string, imports string, types []typeContext,
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tmpls ...*template.Template) (err error) {
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err = generateDotGo(fileNamePrefix+".go", imports, types,
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tmpls...,
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)
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if err != nil {
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return
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}
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err = generateTestDotGo(fileNamePrefix+"_test.go", types)
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return
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}
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func main() {
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flag.Parse()
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var err error
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outputDir := "."
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err = generateOneFile(filepath.Join(outputDir, "builtin_control_vec_generated"), builtinControlImports, typesMap,
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// Add to the list if the file has more template to execute.
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builtinIfVec,
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)
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if err != nil {
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log.Fatalln("generateOneFile", err)
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}
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}
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