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
|
/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
module.exports = SourceNode; // circular dependency
var base64VLQ = require("./base64-vlq");
var getNumberOfLines = require("./helpers").getNumberOfLines;
var getUnfinishedLine = require("./helpers").getUnfinishedLine;
var SingleLineNode = require("./SingleLineNode");
function SourceNode(generatedCode, source, originalSource, startingLine) {
this.generatedCode = generatedCode;
this.originalSource = originalSource;
this.source = source;
this.startingLine = startingLine || 1;
this._numberOfLines = getNumberOfLines(this.generatedCode);
this._endsWithNewLine = generatedCode[generatedCode.length - 1] === "\n";
}
SourceNode.prototype.clone = function() {
return new SourceNode(this.generatedCode, this.source, this.originalSource, this.startingLine);
}
var LINE_MAPPING = ";AACA";
SourceNode.prototype.getGeneratedCode = function() {
return this.generatedCode;
};
SourceNode.prototype.addGeneratedCode = function(code) {
this.generatedCode += code;
this._numberOfLines += getNumberOfLines(code);
this._endsWithNewLine = code[code.length - 1] === "\n";
};
SourceNode.prototype.getMappings = function(mappingsContext) {
if(!this.generatedCode)
return "";
var lines = this._numberOfLines;
var sourceIdx = mappingsContext.ensureSource(this.source, this.originalSource);
var mappings = "A"; // generated column 0
if(mappingsContext.unfinishedGeneratedLine)
mappings = "," + base64VLQ.encode(mappingsContext.unfinishedGeneratedLine);
mappings += base64VLQ.encode(sourceIdx - mappingsContext.currentSource); // source index
mappings += base64VLQ.encode(this.startingLine - mappingsContext.currentOriginalLine); // original line index
mappings += "A"; // original column 0
mappingsContext.currentSource = sourceIdx;
mappingsContext.currentOriginalLine = this.startingLine + lines - 1;
var unfinishedGeneratedLine = mappingsContext.unfinishedGeneratedLine = getUnfinishedLine(this.generatedCode)
mappings += Array(lines).join(LINE_MAPPING);
if(unfinishedGeneratedLine === 0) {
mappings += ";";
} else {
if(lines !== 0) {
mappings += LINE_MAPPING;
}
mappingsContext.currentOriginalLine++;
}
return mappings;
};
SourceNode.prototype.mapGeneratedCode = function(fn) {
throw new Error("Cannot map generated code on a SourceMap. Normalize to SingleLineNode first.");
};
SourceNode.prototype.getNormalizedNodes = function() {
var results = [];
var currentLine = this.startingLine;
var generatedCode = this.generatedCode;
var index = 0;
var indexEnd = generatedCode.length;
while(index < indexEnd) {
// get one generated line
var nextLine = generatedCode.indexOf("\n", index) + 1;
if(nextLine === 0) nextLine = indexEnd;
var lineGenerated = generatedCode.substr(index, nextLine - index);
results.push(new SingleLineNode(lineGenerated, this.source, this.originalSource, currentLine));
// move cursors
index = nextLine;
currentLine++;
}
return results;
};
SourceNode.prototype.merge = function merge(otherNode) {
if(otherNode instanceof SourceNode) {
return this.mergeSourceNode(otherNode);
} else if(otherNode instanceof SingleLineNode) {
return this.mergeSingleLineNode(otherNode);
}
return false;
};
SourceNode.prototype.mergeSourceNode = function mergeSourceNode(otherNode) {
if(this.source === otherNode.source &&
this._endsWithNewLine &&
this.startingLine + this._numberOfLines === otherNode.startingLine) {
this.generatedCode += otherNode.generatedCode;
this._numberOfLines += otherNode._numberOfLines;
this._endsWithNewLine = otherNode._endsWithNewLine;
return this;
}
return false;
};
SourceNode.prototype.mergeSingleLineNode = function mergeSingleLineNode(otherNode) {
if(this.source === otherNode.source &&
this._endsWithNewLine &&
this.startingLine + this._numberOfLines === otherNode.line &&
otherNode._numberOfLines <= 1) {
this.addSingleLineNode(otherNode);
return this;
}
return false;
};
SourceNode.prototype.addSingleLineNode = function addSingleLineNode(otherNode) {
this.generatedCode += otherNode.generatedCode;
this._numberOfLines += otherNode._numberOfLines
this._endsWithNewLine = otherNode._endsWithNewLine;
};
|
