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
|
// Copyright (C) 2019-2024 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package logic
import (
"bytes"
"strings"
)
// sourceMapVersion is currently 3.
// Refer to the full specs of sourcemap here: https://sourcemaps.info/spec.html
const sourceMapVersion = 3
const b64table string = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
// SourceMap contains details from the source to assembly process.
// Currently, contains the map between TEAL source line to
// the assembled bytecode position and details about
// the template variables contained in the source file.
type SourceMap struct {
Version int `json:"version"`
File string `json:"file,omitempty"`
SourceRoot string `json:"sourceRoot,omitempty"`
Sources []string `json:"sources"`
Names []string `json:"names"`
Mappings string `json:"mappings"`
}
// GetSourceMap returns a struct containing details about
// the assembled file and encoded mappings to the source file.
func GetSourceMap(sourceNames []string, offsetToLocation map[int]SourceLocation) SourceMap {
maxPC := 0
for pc := range offsetToLocation {
if pc > maxPC {
maxPC = pc
}
}
// Array where index is the PC and value is the line for `mappings` field.
prevSourceLocation := SourceLocation{}
pcToLine := make([]string, maxPC+1)
for pc := range pcToLine {
if location, ok := offsetToLocation[pc]; ok {
pcToLine[pc] = MakeSourceMapLine(0, 0, location.Line-prevSourceLocation.Line, location.Column-prevSourceLocation.Column)
prevSourceLocation = location
} else {
pcToLine[pc] = ""
}
}
return SourceMap{
Version: sourceMapVersion,
Sources: sourceNames,
Names: []string{}, // TEAL code does not generate any names.
Mappings: strings.Join(pcToLine, ";"),
}
}
// intToVLQ writes out value to bytes.Buffer
func intToVLQ(v int, buf *bytes.Buffer) {
v <<= 1
if v < 0 {
v = -v
v |= 1
}
for v >= 32 {
buf.WriteByte(b64table[32|(v&31)])
v >>= 5
}
buf.WriteByte(b64table[v])
}
// MakeSourceMapLine creates source map mapping's line entry
func MakeSourceMapLine(tcol, sindex, sline, scol int) string {
buf := bytes.NewBuffer(nil)
intToVLQ(tcol, buf)
intToVLQ(sindex, buf)
intToVLQ(sline, buf)
intToVLQ(scol, buf)
return buf.String()
}
|
