forked from projectmoon/tenebrous-dicebot
90 lines
3.1 KiB
JavaScript
90 lines
3.1 KiB
JavaScript
"use strict";
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.resizeSectionByteSize = resizeSectionByteSize;
|
|
exports.resizeSectionVecSize = resizeSectionVecSize;
|
|
|
|
var _wasmGen = require("@webassemblyjs/wasm-gen");
|
|
|
|
var _ast = require("@webassemblyjs/ast");
|
|
|
|
var _helperBuffer = require("@webassemblyjs/helper-buffer");
|
|
|
|
function resizeSectionByteSize(ast, uint8Buffer, section, deltaBytes) {
|
|
var sectionMetadata = (0, _ast.getSectionMetadata)(ast, section);
|
|
|
|
if (typeof sectionMetadata === "undefined") {
|
|
throw new Error("Section metadata not found");
|
|
}
|
|
|
|
if (typeof sectionMetadata.size.loc === "undefined") {
|
|
throw new Error("SectionMetadata " + section + " has no loc");
|
|
} // keep old node location to be overriden
|
|
|
|
|
|
var start = sectionMetadata.size.loc.start.column;
|
|
var end = sectionMetadata.size.loc.end.column;
|
|
var newSectionSize = sectionMetadata.size.value + deltaBytes;
|
|
var newBytes = (0, _wasmGen.encodeU32)(newSectionSize);
|
|
/**
|
|
* update AST
|
|
*/
|
|
|
|
sectionMetadata.size.value = newSectionSize;
|
|
var oldu32EncodedLen = end - start;
|
|
var newu32EncodedLen = newBytes.length; // the new u32 has a different encoded length
|
|
|
|
if (newu32EncodedLen !== oldu32EncodedLen) {
|
|
var deltaInSizeEncoding = newu32EncodedLen - oldu32EncodedLen;
|
|
sectionMetadata.size.loc.end.column = start + newu32EncodedLen;
|
|
deltaBytes += deltaInSizeEncoding; // move the vec size pointer size the section size is now smaller
|
|
|
|
sectionMetadata.vectorOfSize.loc.start.column += deltaInSizeEncoding;
|
|
sectionMetadata.vectorOfSize.loc.end.column += deltaInSizeEncoding;
|
|
} // Once we hit our section every that is after needs to be shifted by the delta
|
|
|
|
|
|
var encounteredSection = false;
|
|
(0, _ast.traverse)(ast, {
|
|
SectionMetadata: function SectionMetadata(path) {
|
|
if (path.node.section === section) {
|
|
encounteredSection = true;
|
|
return;
|
|
}
|
|
|
|
if (encounteredSection === true) {
|
|
(0, _ast.shiftSection)(ast, path.node, deltaBytes);
|
|
}
|
|
}
|
|
});
|
|
return (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, start, end, newBytes);
|
|
}
|
|
|
|
function resizeSectionVecSize(ast, uint8Buffer, section, deltaElements) {
|
|
var sectionMetadata = (0, _ast.getSectionMetadata)(ast, section);
|
|
|
|
if (typeof sectionMetadata === "undefined") {
|
|
throw new Error("Section metadata not found");
|
|
}
|
|
|
|
if (typeof sectionMetadata.vectorOfSize.loc === "undefined") {
|
|
throw new Error("SectionMetadata " + section + " has no loc");
|
|
} // Section has no vector
|
|
|
|
|
|
if (sectionMetadata.vectorOfSize.value === -1) {
|
|
return uint8Buffer;
|
|
} // keep old node location to be overriden
|
|
|
|
|
|
var start = sectionMetadata.vectorOfSize.loc.start.column;
|
|
var end = sectionMetadata.vectorOfSize.loc.end.column;
|
|
var newValue = sectionMetadata.vectorOfSize.value + deltaElements;
|
|
var newBytes = (0, _wasmGen.encodeU32)(newValue); // Update AST
|
|
|
|
sectionMetadata.vectorOfSize.value = newValue;
|
|
sectionMetadata.vectorOfSize.loc.end.column = start + newBytes.length;
|
|
return (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, start, end, newBytes);
|
|
} |