source: trip-planner-front/node_modules/sourcemap-codec/dist/sourcemap-codec.es.js@ fa375fe

Last change on this file since fa375fe was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

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File size: 4.1 KB
Line 
1var charToInteger = {};
2var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
3for (var i = 0; i < chars.length; i++) {
4 charToInteger[chars.charCodeAt(i)] = i;
5}
6function decode(mappings) {
7 var decoded = [];
8 var line = [];
9 var segment = [
10 0,
11 0,
12 0,
13 0,
14 0,
15 ];
16 var j = 0;
17 for (var i = 0, shift = 0, value = 0; i < mappings.length; i++) {
18 var c = mappings.charCodeAt(i);
19 if (c === 44) { // ","
20 segmentify(line, segment, j);
21 j = 0;
22 }
23 else if (c === 59) { // ";"
24 segmentify(line, segment, j);
25 j = 0;
26 decoded.push(line);
27 line = [];
28 segment[0] = 0;
29 }
30 else {
31 var integer = charToInteger[c];
32 if (integer === undefined) {
33 throw new Error('Invalid character (' + String.fromCharCode(c) + ')');
34 }
35 var hasContinuationBit = integer & 32;
36 integer &= 31;
37 value += integer << shift;
38 if (hasContinuationBit) {
39 shift += 5;
40 }
41 else {
42 var shouldNegate = value & 1;
43 value >>>= 1;
44 if (shouldNegate) {
45 value = value === 0 ? -0x80000000 : -value;
46 }
47 segment[j] += value;
48 j++;
49 value = shift = 0; // reset
50 }
51 }
52 }
53 segmentify(line, segment, j);
54 decoded.push(line);
55 return decoded;
56}
57function segmentify(line, segment, j) {
58 // This looks ugly, but we're creating specialized arrays with a specific
59 // length. This is much faster than creating a new array (which v8 expands to
60 // a capacity of 17 after pushing the first item), or slicing out a subarray
61 // (which is slow). Length 4 is assumed to be the most frequent, followed by
62 // length 5 (since not everything will have an associated name), followed by
63 // length 1 (it's probably rare for a source substring to not have an
64 // associated segment data).
65 if (j === 4)
66 line.push([segment[0], segment[1], segment[2], segment[3]]);
67 else if (j === 5)
68 line.push([segment[0], segment[1], segment[2], segment[3], segment[4]]);
69 else if (j === 1)
70 line.push([segment[0]]);
71}
72function encode(decoded) {
73 var sourceFileIndex = 0; // second field
74 var sourceCodeLine = 0; // third field
75 var sourceCodeColumn = 0; // fourth field
76 var nameIndex = 0; // fifth field
77 var mappings = '';
78 for (var i = 0; i < decoded.length; i++) {
79 var line = decoded[i];
80 if (i > 0)
81 mappings += ';';
82 if (line.length === 0)
83 continue;
84 var generatedCodeColumn = 0; // first field
85 var lineMappings = [];
86 for (var _i = 0, line_1 = line; _i < line_1.length; _i++) {
87 var segment = line_1[_i];
88 var segmentMappings = encodeInteger(segment[0] - generatedCodeColumn);
89 generatedCodeColumn = segment[0];
90 if (segment.length > 1) {
91 segmentMappings +=
92 encodeInteger(segment[1] - sourceFileIndex) +
93 encodeInteger(segment[2] - sourceCodeLine) +
94 encodeInteger(segment[3] - sourceCodeColumn);
95 sourceFileIndex = segment[1];
96 sourceCodeLine = segment[2];
97 sourceCodeColumn = segment[3];
98 }
99 if (segment.length === 5) {
100 segmentMappings += encodeInteger(segment[4] - nameIndex);
101 nameIndex = segment[4];
102 }
103 lineMappings.push(segmentMappings);
104 }
105 mappings += lineMappings.join(',');
106 }
107 return mappings;
108}
109function encodeInteger(num) {
110 var result = '';
111 num = num < 0 ? (-num << 1) | 1 : num << 1;
112 do {
113 var clamped = num & 31;
114 num >>>= 5;
115 if (num > 0) {
116 clamped |= 32;
117 }
118 result += chars[clamped];
119 } while (num > 0);
120 return result;
121}
122
123export { decode, encode };
124//# sourceMappingURL=sourcemap-codec.es.js.map
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