@webassemblyjs/ast

AST utils for webassemblyjs

Installation

sh
yarn add @webassemblyjs/ast

Usage

Traverse

js
import { traverse } from "@webassemblyjs/ast";

traverse(ast, {
  Module(path) {
    console.log(path.node);
  }
});

Instruction signatures

js
import { signatures } from "@webassemblyjs/ast";

console.log(signatures);

Path methods

• findParent: NodeLocator
• replaceWith: Node => void
• remove: () => void
• insertBefore: Node => void
• insertAfter: Node => void
• stop: () => void

AST utils

• function module(id, fields, metadata)
• function moduleMetadata(sections, functionNames, localNames)
• function moduleNameMetadata(value)
• function functionNameMetadata(value, index)
• function localNameMetadata(value, localIndex, functionIndex)
• function binaryModule(id, blob)
• function quoteModule(id, string)
• function sectionMetadata(section, startOffset, size, vectorOfSize)
• function loopInstruction(label, resulttype, instr)
• function instruction(id, args, namedArgs)
• function objectInstruction(id, object, args, namedArgs)
• function ifInstruction(testLabel, test, result, consequent, alternate)
• function stringLiteral(value)
• function numberLiteralFromRaw(value, raw)
• function longNumberLiteral(value, raw)
• function floatLiteral(value, nan, inf, raw)
• function elem(table, offset, funcs)
• function indexInFuncSection(index)
• function valtypeLiteral(name)
• function typeInstruction(id, functype)
• function start(index)
• function globalType(valtype, mutability)
• function leadingComment(value)
• function blockComment(value)
• function data(memoryIndex, offset, init)
• function global(globalType, init, name)
• function table(elementType, limits, name, elements)
• function memory(limits, id)
• function funcImportDescr(id, signature)
• function moduleImport(module, name, descr)
• function moduleExportDescr(exportType, id)
• function moduleExport(name, descr)
• function limit(min, max)
• function signature(params, results)
• function program(body)
• function identifier(value, raw)
• function blockInstruction(label, instr, result)
• function callInstruction(index, instrArgs)
• function callIndirectInstruction(signature, intrs)
• function byteArray(values)
• function func(name, signature, body, isExternal, metadata)
• Constant`isModule`
• Constant`isModuleMetadata`
• Constant`isModuleNameMetadata`
• Constant`isFunctionNameMetadata`
• Constant`isLocalNameMetadata`
• Constant`isBinaryModule`
• Constant`isQuoteModule`
• Constant`isSectionMetadata`
• Constant`isLoopInstruction`
• Constant`isInstruction`
• Constant`isObjectInstruction`
• Constant`isIfInstruction`
• Constant`isStringLiteral`
• Constant`isNumberLiteral`
• Constant`isLongNumberLiteral`
• Constant`isFloatLiteral`
• Constant`isElem`
• Constant`isIndexInFuncSection`
• Constant`isValtypeLiteral`
• Constant`isTypeInstruction`
• Constant`isStart`
• Constant`isGlobalType`
• Constant`isLeadingComment`
• Constant`isBlockComment`
• Constant`isData`
• Constant`isGlobal`
• Constant`isTable`
• Constant`isMemory`
• Constant`isFuncImportDescr`
• Constant`isModuleImport`
• Constant`isModuleExportDescr`
• Constant`isModuleExport`
• Constant`isLimit`
• Constant`isSignature`
• Constant`isProgram`
• Constant`isIdentifier`
• Constant`isBlockInstruction`
• Constant`isCallInstruction`
• Constant`isCallIndirectInstruction`
• Constant`isByteArray`
• Constant`isFunc`
• Constant`assertModule`
• Constant`assertModuleMetadata`
• Constant`assertModuleNameMetadata`
• Constant`assertFunctionNameMetadata`
• Constant`assertLocalNameMetadata`
• Constant`assertBinaryModule`
• Constant`assertQuoteModule`
• Constant`assertSectionMetadata`
• Constant`assertLoopInstruction`
• Constant`assertInstruction`
• Constant`assertObjectInstruction`
• Constant`assertIfInstruction`
• Constant`assertStringLiteral`
• Constant`assertNumberLiteral`
• Constant`assertLongNumberLiteral`
• Constant`assertFloatLiteral`
• Constant`assertElem`
• Constant`assertIndexInFuncSection`
• Constant`assertValtypeLiteral`
• Constant`assertTypeInstruction`
• Constant`assertStart`
• Constant`assertGlobalType`
• Constant`assertLeadingComment`
• Constant`assertBlockComment`
• Constant`assertData`
• Constant`assertGlobal`
• Constant`assertTable`
• Constant`assertMemory`
• Constant`assertFuncImportDescr`
• Constant`assertModuleImport`
• Constant`assertModuleExportDescr`
• Constant`assertModuleExport`
• Constant`assertLimit`
• Constant`assertSignature`
• Constant`assertProgram`
• Constant`assertIdentifier`
• Constant`assertBlockInstruction`
• Constant`assertCallInstruction`
• Constant`assertCallIndirectInstruction`
• Constant`assertByteArray`
• Constant`assertFunc`