-
Notifications
You must be signed in to change notification settings - Fork 2k
/
debug.go
151 lines (133 loc) · 3.68 KB
/
debug.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
/*
© 2016 and later: Unicode, Inc. and others.
Copyright (C) 2004-2015, International Business Machines Corporation and others.
Copyright 2023 The Vitess Authors.
This file contains code derived from the Unicode Project's ICU library.
License & terms of use for the original code: http://www.unicode.org/copyright.html
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 icuregex
import (
"fmt"
"io"
)
func (pat *Pattern) Dump(w io.Writer) {
fmt.Fprintf(w, "Original Pattern: \"%s\"\n", pat.pattern)
fmt.Fprintf(w, " Min Match Length: %d\n", pat.minMatchLen)
fmt.Fprintf(w, " Match Start Type: %v\n", pat.startType)
if pat.startType == startString {
fmt.Fprintf(w, " Initial match string: \"%s\"\n", string(pat.literalText[pat.initialStringIdx:pat.initialStringIdx+pat.initialStringLen]))
} else if pat.startType == startSet {
fmt.Fprintf(w, " Match First Chars: %s\n", pat.initialChars.String())
} else if pat.startType == startChar {
fmt.Fprintf(w, " First char of Match: ")
if pat.initialChar > 0x20 {
fmt.Fprintf(w, "'%c'\n", pat.initialChar)
} else {
fmt.Fprintf(w, "%#x\n", pat.initialChar)
}
}
fmt.Fprintf(w, "Named Capture Groups:\n")
if len(pat.namedCaptureMap) == 0 {
fmt.Fprintf(w, " None\n")
} else {
for name, number := range pat.namedCaptureMap {
fmt.Fprintf(w, " %d\t%s\n", number, name)
}
}
fmt.Fprintf(w, "\nIndex Binary Type Operand\n-------------------------------------------\n")
for idx := range pat.compiledPat {
pat.dumpOp(w, idx)
}
fmt.Fprintf(w, "\n\n")
}
func (pat *Pattern) dumpOp(w io.Writer, index int) {
op := pat.compiledPat[index]
val := op.value()
opType := op.typ()
pinnedType := opType
if int(pinnedType) >= len(urxOpcodeNames) {
pinnedType = 0
}
fmt.Fprintf(w, "%4d %08x %-15s ", index, op, urxOpcodeNames[pinnedType])
switch opType {
case urxNop,
urxDotany,
urxDotanyAll,
urxFail,
urxCaret,
urxDollar,
urxBackslashG,
urxBackslashX,
urxEnd,
urxDollarM,
urxCaretM:
// Types with no operand field of interest.
case urxReservedOp,
urxStartCapture,
urxEndCapture,
urxStateSave,
urxJmp,
urxJmpSav,
urxJmpSavX,
urxBackslashB,
urxBackslashBu,
urxBackslashD,
urxBackslashZ,
urxStringLen,
urxCtrInit,
urxCtrInitNg,
utxCtrLoop,
urxCtrLoopNg,
urxRelocOprnd,
urxStoSp,
urxLdSp,
urxBackref,
urxStoInpLoc,
urxJmpx,
urxLaStart,
urxLaEnd,
urxBackrefI,
urxLbStart,
urxLbCont,
urxLbEnd,
urxLbnCount,
urxLbnEnd,
urxLoopC,
urxLoopDotI,
urxBackslashH,
urxBackslashR,
urxBackslashV:
// types with an integer operand field.
fmt.Fprintf(w, "%d", val)
case urxOnechar, urcOnecharI:
if val < 0x20 {
fmt.Fprintf(w, "%#x", val)
} else {
fmt.Fprintf(w, "'%c'", rune(val))
}
case urxString, urxStringI:
lengthOp := pat.compiledPat[index+1]
length := lengthOp.value()
fmt.Fprintf(w, "%q", string(pat.literalText[val:val+length]))
case urxSetref, urxLoopSrI:
fmt.Fprintf(w, "%s", pat.sets[val].String())
case urxStaticSetref, urxStatSetrefN:
if (val & urxNegSet) != 0 {
fmt.Fprintf(w, "NOT ")
val &= ^urxNegSet
}
fmt.Fprintf(w, "%s", staticPropertySets[val].String())
default:
fmt.Fprintf(w, "??????")
}
fmt.Fprintf(w, "\n")
}