1
|
"use strict";
|
2
|
|
3
|
Object.defineProperty(exports, "__esModule", {
|
4
|
value: true
|
5
|
});
|
6
|
exports.resizeSectionByteSize = resizeSectionByteSize;
|
7
|
exports.resizeSectionVecSize = resizeSectionVecSize;
|
8
|
|
9
|
var _wasmGen = require("@webassemblyjs/wasm-gen");
|
10
|
|
11
|
var _ast = require("@webassemblyjs/ast");
|
12
|
|
13
|
var _helperBuffer = require("@webassemblyjs/helper-buffer");
|
14
|
|
15
|
function resizeSectionByteSize(ast, uint8Buffer, section, deltaBytes) {
|
16
|
var sectionMetadata = (0, _ast.getSectionMetadata)(ast, section);
|
17
|
|
18
|
if (typeof sectionMetadata === "undefined") {
|
19
|
throw new Error("Section metadata not found");
|
20
|
}
|
21
|
|
22
|
if (typeof sectionMetadata.size.loc === "undefined") {
|
23
|
throw new Error("SectionMetadata " + section + " has no loc");
|
24
|
} // keep old node location to be overriden
|
25
|
|
26
|
|
27
|
var start = sectionMetadata.size.loc.start.column;
|
28
|
var end = sectionMetadata.size.loc.end.column;
|
29
|
var newSectionSize = sectionMetadata.size.value + deltaBytes;
|
30
|
var newBytes = (0, _wasmGen.encodeU32)(newSectionSize);
|
31
|
/**
|
32
|
* update AST
|
33
|
*/
|
34
|
|
35
|
sectionMetadata.size.value = newSectionSize;
|
36
|
var oldu32EncodedLen = end - start;
|
37
|
var newu32EncodedLen = newBytes.length; // the new u32 has a different encoded length
|
38
|
|
39
|
if (newu32EncodedLen !== oldu32EncodedLen) {
|
40
|
var deltaInSizeEncoding = newu32EncodedLen - oldu32EncodedLen;
|
41
|
sectionMetadata.size.loc.end.column = start + newu32EncodedLen;
|
42
|
deltaBytes += deltaInSizeEncoding; // move the vec size pointer size the section size is now smaller
|
43
|
|
44
|
sectionMetadata.vectorOfSize.loc.start.column += deltaInSizeEncoding;
|
45
|
sectionMetadata.vectorOfSize.loc.end.column += deltaInSizeEncoding;
|
46
|
} // Once we hit our section every that is after needs to be shifted by the delta
|
47
|
|
48
|
|
49
|
var encounteredSection = false;
|
50
|
(0, _ast.traverse)(ast, {
|
51
|
SectionMetadata: function SectionMetadata(path) {
|
52
|
if (path.node.section === section) {
|
53
|
encounteredSection = true;
|
54
|
return;
|
55
|
}
|
56
|
|
57
|
if (encounteredSection === true) {
|
58
|
(0, _ast.shiftSection)(ast, path.node, deltaBytes);
|
59
|
}
|
60
|
}
|
61
|
});
|
62
|
return (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, start, end, newBytes);
|
63
|
}
|
64
|
|
65
|
function resizeSectionVecSize(ast, uint8Buffer, section, deltaElements) {
|
66
|
var sectionMetadata = (0, _ast.getSectionMetadata)(ast, section);
|
67
|
|
68
|
if (typeof sectionMetadata === "undefined") {
|
69
|
throw new Error("Section metadata not found");
|
70
|
}
|
71
|
|
72
|
if (typeof sectionMetadata.vectorOfSize.loc === "undefined") {
|
73
|
throw new Error("SectionMetadata " + section + " has no loc");
|
74
|
} // Section has no vector
|
75
|
|
76
|
|
77
|
if (sectionMetadata.vectorOfSize.value === -1) {
|
78
|
return uint8Buffer;
|
79
|
} // keep old node location to be overriden
|
80
|
|
81
|
|
82
|
var start = sectionMetadata.vectorOfSize.loc.start.column;
|
83
|
var end = sectionMetadata.vectorOfSize.loc.end.column;
|
84
|
var newValue = sectionMetadata.vectorOfSize.value + deltaElements;
|
85
|
var newBytes = (0, _wasmGen.encodeU32)(newValue); // Update AST
|
86
|
|
87
|
sectionMetadata.vectorOfSize.value = newValue;
|
88
|
sectionMetadata.vectorOfSize.loc.end.column = start + newBytes.length;
|
89
|
return (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, start, end, newBytes);
|
90
|
}
|