@webassemblyjs/ast

AST utils for webassemblyjs

Installation

yarn add @webassemblyjs/ast

Usage

Traverse

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

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

Instruction signatures

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)
• ConstantisModule
• ConstantisModuleMetadata
• ConstantisModuleNameMetadata
• ConstantisFunctionNameMetadata
• ConstantisLocalNameMetadata
• ConstantisBinaryModule
• ConstantisQuoteModule
• ConstantisSectionMetadata
• ConstantisLoopInstruction
• ConstantisInstruction
• ConstantisObjectInstruction
• ConstantisIfInstruction
• ConstantisStringLiteral
• ConstantisNumberLiteral
• ConstantisLongNumberLiteral
• ConstantisFloatLiteral
• ConstantisElem
• ConstantisIndexInFuncSection
• ConstantisValtypeLiteral
• ConstantisTypeInstruction
• ConstantisStart
• ConstantisGlobalType
• ConstantisLeadingComment
• ConstantisBlockComment
• ConstantisData
• ConstantisGlobal
• ConstantisTable
• ConstantisMemory
• ConstantisFuncImportDescr
• ConstantisModuleImport
• ConstantisModuleExportDescr
• ConstantisModuleExport
• ConstantisLimit
• ConstantisSignature
• ConstantisProgram
• ConstantisIdentifier
• ConstantisBlockInstruction
• ConstantisCallInstruction
• ConstantisCallIndirectInstruction
• ConstantisByteArray
• ConstantisFunc
• ConstantassertModule
• ConstantassertModuleMetadata
• ConstantassertModuleNameMetadata
• ConstantassertFunctionNameMetadata
• ConstantassertLocalNameMetadata
• ConstantassertBinaryModule
• ConstantassertQuoteModule
• ConstantassertSectionMetadata
• ConstantassertLoopInstruction
• ConstantassertInstruction
• ConstantassertObjectInstruction
• ConstantassertIfInstruction
• ConstantassertStringLiteral
• ConstantassertNumberLiteral
• ConstantassertLongNumberLiteral
• ConstantassertFloatLiteral
• ConstantassertElem
• ConstantassertIndexInFuncSection
• ConstantassertValtypeLiteral
• ConstantassertTypeInstruction
• ConstantassertStart
• ConstantassertGlobalType
• ConstantassertLeadingComment
• ConstantassertBlockComment
• ConstantassertData
• ConstantassertGlobal
• ConstantassertTable
• ConstantassertMemory
• ConstantassertFuncImportDescr
• ConstantassertModuleImport
• ConstantassertModuleExportDescr
• ConstantassertModuleExport
• ConstantassertLimit
• ConstantassertSignature
• ConstantassertProgram
• ConstantassertIdentifier
• ConstantassertBlockInstruction
• ConstantassertCallInstruction
• ConstantassertCallIndirectInstruction
• ConstantassertByteArray
• ConstantassertFunc