-
Notifications
You must be signed in to change notification settings - Fork 3.8k
/
vec_tmpl.go
206 lines (189 loc) · 5.48 KB
/
vec_tmpl.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
// Copyright 2018 The Cockroach Authors.
//
// Use of this software is governed by the Business Source License
// included in the file licenses/BSL.txt.
//
// As of the Change Date specified in that file, in accordance with
// the Business Source License, use of this software will be governed
// by the Apache License, Version 2.0, included in the file
// licenses/APL.txt.
// {{/*
// +build execgen_template
//
// This file is the execgen template for vec.eg.go. It's formatted in a
// special way, so it's both valid Go and a valid text/template input. This
// permits editing this file with editor support.
//
// */}}
package coldata
import (
"fmt"
"github.com/cockroachdb/apd"
"github.com/cockroachdb/cockroach/pkg/col/coltypes"
// {{/*
"github.com/cockroachdb/cockroach/pkg/sql/exec/execgen"
// */}}
// HACK: crlfmt removes the "*/}}" comment if it's the last line in the import
// block. This was picked because it sorts after "pkg/sql/exec/execgen" and
// has no deps.
_ "github.com/cockroachdb/cockroach/pkg/util/bufalloc"
)
// {{/*
// _TYPES_T is the template type variable for coltypes.T. It will be replaced by
// coltypes.Foo for each type Foo in the coltypes.T type.
const _TYPES_T = coltypes.Unhandled
// _GOTYPESLICE is a template Go type slice variable.
type _GOTYPESLICE interface{}
// Dummy import to pull in "apd" package.
var _ apd.Decimal
// */}}
func (m *memColumn) Append(args SliceArgs) {
switch args.ColType {
// {{range .}}
case _TYPES_T:
fromCol := args.Src._TemplateType()
toCol := m._TemplateType()
if args.Sel == nil {
execgen.APPENDSLICE(toCol, fromCol, int(args.DestIdx), int(args.SrcStartIdx), int(args.SrcEndIdx))
} else {
sel := args.Sel[args.SrcStartIdx:args.SrcEndIdx]
// TODO(asubiotto): We could be more efficient for fixed width types by
// preallocating a destination slice (not so for variable length types).
// Improve this.
toCol = execgen.SLICE(toCol, 0, int(args.DestIdx))
for _, selIdx := range sel {
val := execgen.UNSAFEGET(fromCol, int(selIdx))
execgen.APPENDVAL(toCol, val)
}
}
m.nulls.set(args)
m.col = toCol
// {{end}}
default:
panic(fmt.Sprintf("unhandled type %s", args.ColType))
}
}
// {{/*
func _COPY_WITH_SEL(
m *memColumn, args CopySliceArgs, fromCol, toCol _GOTYPESLICE, sel interface{}, _SEL_ON_DEST bool,
) { // */}}
// {{define "copyWithSel"}}
if args.Src.MaybeHasNulls() {
nulls := args.Src.Nulls()
for i, selIdx := range sel[args.SrcStartIdx:args.SrcEndIdx] {
if nulls.NullAt64(uint64(selIdx)) {
// {{if .SelOnDest}}
// Remove an unused warning in some cases.
_ = i
m.nulls.SetNull64(uint64(selIdx))
// {{else}}
m.nulls.SetNull64(uint64(i) + args.DestIdx)
// {{end}}
} else {
v := execgen.UNSAFEGET(fromCol, int(selIdx))
// {{if .SelOnDest}}
m.nulls.UnsetNull64(uint64(selIdx))
execgen.SET(toCol, int(selIdx), v)
// {{else}}
execgen.SET(toCol, i+int(args.DestIdx), v)
// {{end}}
}
}
return
}
// No Nulls.
for i := range sel[args.SrcStartIdx:args.SrcEndIdx] {
selIdx := sel[int(args.SrcStartIdx)+i]
v := execgen.UNSAFEGET(fromCol, int(selIdx))
// {{if .SelOnDest}}
execgen.SET(toCol, int(selIdx), v)
// {{else}}
execgen.SET(toCol, i+int(args.DestIdx), v)
// {{end}}
}
// {{end}}
// {{/*
}
// */}}
func (m *memColumn) Copy(args CopySliceArgs) {
if !args.SelOnDest {
// We're about to overwrite this entire range, so unset all the nulls.
m.Nulls().UnsetNullRange(args.DestIdx, args.DestIdx+(args.SrcEndIdx-args.SrcStartIdx))
}
// } else {
// SelOnDest indicate that we're applying the input selection vector as a lens
// into the output vector as well. We'll set the non-nulls by hand below.
// }
switch args.ColType {
// {{range .}}
case _TYPES_T:
fromCol := args.Src._TemplateType()
toCol := m._TemplateType()
if args.Sel64 != nil {
sel := args.Sel64
if args.SelOnDest {
_COPY_WITH_SEL(m, args, sel, toCol, fromCol, true)
} else {
_COPY_WITH_SEL(m, args, sel, toCol, fromCol, false)
}
return
} else if args.Sel != nil {
sel := args.Sel
if args.SelOnDest {
_COPY_WITH_SEL(m, args, sel, toCol, fromCol, true)
} else {
_COPY_WITH_SEL(m, args, sel, toCol, fromCol, false)
}
return
}
// No Sel or Sel64.
execgen.COPYSLICE(toCol, fromCol, int(args.DestIdx), int(args.SrcStartIdx), int(args.SrcEndIdx))
m.nulls.set(args.SliceArgs)
// {{end}}
default:
panic(fmt.Sprintf("unhandled type %s", args.ColType))
}
}
func (m *memColumn) Slice(colType coltypes.T, start uint64, end uint64) Vec {
switch colType {
// {{range .}}
case _TYPES_T:
col := m._TemplateType()
return &memColumn{
t: colType,
col: execgen.SLICE(col, int(start), int(end)),
nulls: m.nulls.Slice(start, end),
}
// {{end}}
default:
panic(fmt.Sprintf("unhandled type %d", colType))
}
}
func (m *memColumn) PrettyValueAt(colIdx uint16, colType coltypes.T) string {
if m.nulls.NullAt(colIdx) {
return "NULL"
}
switch colType {
// {{range .}}
case _TYPES_T:
col := m._TemplateType()
v := execgen.UNSAFEGET(col, int(colIdx))
return fmt.Sprintf("%v", v)
// {{end}}
default:
panic(fmt.Sprintf("unhandled type %d", colType))
}
}
// Helper to set the value in a Vec when the type is unknown.
func SetValueAt(v Vec, elem interface{}, rowIdx uint16, colType coltypes.T) {
switch colType {
// {{range .}}
case _TYPES_T:
target := v._TemplateType()
newVal := elem.(_GOTYPE)
execgen.SET(target, int(rowIdx), newVal)
// {{end}}
default:
panic(fmt.Sprintf("unhandled type %d", colType))
}
}