Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F86657153
create.js
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Mon, Oct 7, 20:14
Size
3 KB
Mime Type
text/x-java
Expires
Wed, Oct 9, 20:14 (2 d)
Engine
blob
Format
Raw Data
Handle
21462157
Attached To
rOACCT Open Access Compliance Check Tool (OACCT)
create.js
View Options
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
import { encodeNode } from "@webassemblyjs/wasm-gen";
import { overrideBytesInBuffer } from "@webassemblyjs/helper-buffer";
import constants from "@webassemblyjs/helper-wasm-bytecode";
import * as t from "@webassemblyjs/ast";
function findLastSection(ast, forSection) {
var targetSectionId = constants.sections[forSection]; // $FlowIgnore: metadata can not be empty
var moduleSections = ast.body[0].metadata.sections;
var lastSection;
var lastId = 0;
for (var i = 0, len = moduleSections.length; i < len; i++) {
var section = moduleSections[i]; // Ignore custom section since they can actually occur everywhere
if (section.section === "custom") {
continue;
}
var sectionId = constants.sections[section.section];
if (targetSectionId > lastId && targetSectionId < sectionId) {
return lastSection;
}
lastId = sectionId;
lastSection = section;
}
return lastSection;
}
export function createEmptySection(ast, uint8Buffer, section) {
// previous section after which we are going to insert our section
var lastSection = findLastSection(ast, section);
var start, end;
/**
* It's the first section
*/
if (lastSection == null || lastSection.section === "custom") {
start = 8
/* wasm header size */
;
end = start;
} else {
start = lastSection.startOffset + lastSection.size.value + 1;
end = start;
} // section id
start += 1;
var sizeStartLoc = {
line: -1,
column: start
};
var sizeEndLoc = {
line: -1,
column: start + 1
}; // 1 byte for the empty vector
var size = t.withLoc(t.numberLiteralFromRaw(1), sizeEndLoc, sizeStartLoc);
var vectorOfSizeStartLoc = {
line: -1,
column: sizeEndLoc.column
};
var vectorOfSizeEndLoc = {
line: -1,
column: sizeEndLoc.column + 1
};
var vectorOfSize = t.withLoc(t.numberLiteralFromRaw(0), vectorOfSizeEndLoc, vectorOfSizeStartLoc);
var sectionMetadata = t.sectionMetadata(section, start, size, vectorOfSize);
var sectionBytes = encodeNode(sectionMetadata);
uint8Buffer = overrideBytesInBuffer(uint8Buffer, start - 1, end, sectionBytes); // Add section into the AST for later lookups
if (_typeof(ast.body[0].metadata) === "object") {
// $FlowIgnore: metadata can not be empty
ast.body[0].metadata.sections.push(sectionMetadata);
t.sortSectionMetadata(ast.body[0]);
}
/**
* Update AST
*/
// Once we hit our section every that is after needs to be shifted by the delta
var deltaBytes = +sectionBytes.length;
var encounteredSection = false;
t.traverse(ast, {
SectionMetadata: function SectionMetadata(path) {
if (path.node.section === section) {
encounteredSection = true;
return;
}
if (encounteredSection === true) {
t.shiftSection(ast, path.node, deltaBytes);
}
}
});
return {
uint8Buffer: uint8Buffer,
sectionMetadata: sectionMetadata
};
}
Event Timeline
Log In to Comment