@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