binaryen.js is a port of Binaryen to the Web, allowing you to generate WebAssembly using a JavaScript API.
- Usage
- API
- Building
$> npm install binaryen
var binaryen = require("binaryen");
var myModule = new binaryen.Module();
myModule.addFunction("main", myModule.addFunctionType("i", binaryen.i32, []), [],
myModule.return(
myModule.i32.const(0)
)
);
myModule.addFunctionExport("main", "main");
var textData = myModule.emitText();
var wasmData = myModule.emitBinary();
...The buildbot also publishes nightly versions once a day if there have been changes. The latest nightly can be installed through
$> npm install binaryen@nightly
or you can use one of the previous versions instead if necessary.
Future features 🦄 might not be supported by all runtimes.
-
none:
Type
The none type, e.g.,void. -
i32:
Type
32-bit integer type. -
i64:
Type
64-bit integer type. -
f32:
Type
32-bit float type. -
f64:
Type
64-bit float (double) type. -
undefined:
Type
Special type used with blocks to let the API figure out its result type on its own.
-
new Module():
Module
Constructs a new module. -
parseText(text:
string):Module
Creates a module from Binaryen's s-expression text format (not official stack-style text format). -
readBinary(data:
Uint8Array):Module
Creates a module from binary data.
-
Module#addFunctionType(name:
string, resultType:Type, paramTypes:Type[]):Signature
Adds a new function type. -
Module#getFunctionTypeBySignature(resultType:
Type, paramTypes:Type[]):Signature
Gets an existing function type by its parametric signature. Returns0if there is no such function type. -
Module#addFunction(name:
string, functionType:Signature, varTypes:Type[], body:Expression):Function
Adds a function.varTypesindicate additional locals, in the given order. -
Module#getFunction(name:
string):Function
Gets a function, by name, -
Module#removeFunction(name:
string):void
Removes a function, by name. -
Module#addFunctionImport(internalName:
string, externalModuleName:string, externalBaseName:string, functionType:Signature):Import
Adds a function import. -
Module#addTableImport(internalName:
string, externalModuleName:string, externalBaseName:string):Import
Adds a table import. There's just one table for now, using name"0". -
Module#addMemoryImport(internalName:
string, externalModuleName:string, externalBaseName:string):Import
Adds a memory import. There's just one memory for now, using name"0". -
Module#addGlobalImport(internalName:
string, externalModuleName:string, externalBaseName:string, globalType:Type):Import
Adds a global variable import. Imported globals must be immutable. -
Module#removeImport(internalName:
string):void
Removes an import, by internal name. -
Module#addFunctionExport(internalName:
string, externalName:string):Export
Adds a function export. -
Module#addTableExport(internalName:
string, externalName:string):Export
Adds a table export. There's just one table for now, using name"0". -
Module#addMemoryExport(internalName:
string, externalName:string):Export
Adds a memory export. There's just one memory for now, using name"0". -
Module#addGlobalExport(internalName:
string, externalName:string):Export
Adds a global variable export. Exported globals must be immutable. -
Module#removeExport(externalName:
string):void
Removes an export, by external name. -
Module#setFunctionTable(funcs:
Function[]):void
Sets the contents of the function table. There's just one table for now, using name"0". -
Module#setMemory(initial:
number, maximum:number, exportName:string | null, segments:MemorySegment[]):void
Sets the memory. There's just one memory for now, using name"0". ProvidingexportNamealso creates a memory export. -
Module#setStart(start:
Function):void
Sets the start function. -
Module#optimize():
void
Optimizes the module using the default optimization passes. -
Module#optimizeFunction(func:
Function | string):void
Optimizes a single function using the default optimization passes. -
Module#runPasses(passes:
string[]):void
Runs the specified passes on the module. -
Module#runPassesOnFunction(func:
Function | string, passes:string[]):void
Runs the specified passes on a single function. -
Module#autoDrop():
void
Enables automatic insertion ofdropoperations where needed. Lets you not worry about dropping when creating your code.
- Module#validate():
boolean
Validates the module. Returnstrueif valid, otherwise prints validation errors and returnsfalse.
-
Module#emitBinary():
Uint8Array
Returns the module in binary format. -
Module#emitText():
string
Returns the module in Binaryen's s-expression text format (not official stack-style text format). -
Module#emitAsmjs():
string
Returns the asm.js representation of the module. -
Module#dispose():
void
Releases the resources held by the module once it isn't needed anymore.
-
Module#setAPITracing(on:
boolean):void
Enables tracing of the C-API in the console. Can be very useful when filing bug reports. -
Module#interpret():
void
Runs the module in the interpreter, calling the start function.
-
Module#block(label:
string | null, children:Expression[], resultType?:Type):Expression
Creates a block.resultTypedefaults tonone. -
Module#if(condition:
Expression, ifTrue:Expression, ifFalse?:Expression):Expression
Creates an if or if/else combination. -
Module#loop(label:
string | null, body:Expression):Expression
Creates a loop. -
Module#break(label:
string, condition?:Expression, value?:Expression):Expression
Creates a break (br) to a label. -
Module#switch(labels:
string[], defaultLabel:string, condition:Expression, value?:Expression):Expression
Creates a switch (br_table). -
Module#nop():
Expression
Creates a no-operation (nop) instruction. -
Module#return(value?:
Expression):ExpressionCreates a return. -
Module#unreachable():
Expression
Creates an unreachable instruction that will always trap. -
Module#drop(value:
Expression):Expression
Creates a drop of a value. -
Module#select(condition:
Expression, ifTrue:Expression, ifFalse:Expression):Expression
Creates a select of one of two values.
- Module#i32.const(value:
number):I32Expression
- Module#i64.const(low:
number, high:number):I64Expression
- Module#f32.const(value:
number):F32Expression - Module#f32.const_bits(value:
number):F32Expression
- Module#f64.const(value:
number):F64Expression - Module#f64.const_bits(low:
number, high:number):F64Expression
-
Module#getLocal(index:
number, type:Type):Expression
Creates a get_local for the local at the specified index. Note that we must specify the type here as we may not have created the local being called yet. -
Module#setLocal(index:
number, value:Expression):Expression
Creates a set_local for the local at the specified index. -
Module#teeLocal(index:
number, value:Expression):Expression
Creates a tee_local for the local at the specified index. A tee differs from a set in that the value remains on the stack. -
Module#getGlobal(name:
string, type:Type):Expression
Creates a get_global for the global with the specified name. Note that we must specify the type here as we may not have created the global being called yet. -
Module#setGlobal(name:
string, value:Expression):Expression
Creates a set_global for the global with the specified name.
Variable access methods above are also aliased in underscore notation, e.g., get_local.
- Module#i32.clz(value:
I32Expression):I32Expression - Module#i32.ctz(value:
I32Expression):I32Expression - Module#i32.popcnt(value:
I32Expression):I32Expression - Module#i32.eqz(value:
I32Expression):I32Expression - Module#i32.add(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.sub(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.mul(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.div_s(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.div_u(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.rem_s(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.rem_u(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.and(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.or(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.xor(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.shl(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.shr_u(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.shr_s(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.rotl(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.rotr(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.eq(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.ne(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.lt_s(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.lt_u(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.le_s(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.le_u(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.gt_s(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.gt_u(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.ge_s(left:
I32Expression, right:I32Expression):I32Expression - Module#i32.ge_u(left:
I32Expression, right:I32Expression):I32Expression
- Module#i64.clz(value:
I64Expression):I64Expression - Module#i64.ctz(value:
I64Expression):I64Expression - Module#i64.popcnt(value:
I64Expression):I64Expression - Module#i64.eqz(value:
I64Expression):I64Expression - Module#i64.add(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.sub(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.mul(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.div_s(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.div_u(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.rem_s(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.rem_u(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.and(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.or(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.xor(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.shl(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.shr_u(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.shr_s(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.rotl(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.rotr(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.eq(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.ne(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.lt_s(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.lt_u(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.le_s(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.le_u(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.gt_s(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.gt_u(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.ge_s(left:
I64Expression, right:I64Expression):I64Expression - Module#i64.ge_u(left:
I64Expression, right:I64Expression):I64Expression
- Module#f32.neg(value:
F32Expression):F32Expression - Module#f32.abs(value:
F32Expression):F32Expression - Module#f32.ceil(value:
F32Expression):F32Expression - Module#f32.floor(value:
F32Expression):F32Expression - Module#f32.trunc(value:
F32Expression):F32Expression - Module#f32.nearest(value:
F32Expression):F32Expression - Module#f32.sqrt(value:
F32Expression):F32Expression - Module#f32.add(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.sub(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.mul(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.div(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.copysign(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.min(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.max(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.eq(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.ne(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.lt(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.le(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.gt(left:
F32Expression, right:F32Expression):F32Expression - Module#f32.ge(left:
F32Expression, right:F32Expression):F32Expression
- Module#f64.neg(value:
F64Expression):F64Expression - Module#f64.abs(value:
F64Expression):F64Expression - Module#f64.ceil(value:
F64Expression):F64Expression - Module#f64.floor(value:
F64Expression):F64Expression - Module#f64.trunc(value:
F64Expression):F64Expression - Module#f64.nearest(value:
F64Expression):F64Expression - Module#f64.sqrt(value:
F64Expression):F64Expression - Module#f64.add(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.sub(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.mul(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.div(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.copysign(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.min(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.max(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.eq(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.ne(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.lt(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.le(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.gt(left:
F64Expression, right:F64Expression):F64Expression - Module#f64.ge(left:
F64Expression, right:F64Expression):F64Expression
- Module#i32.trunc_s.f32(value:
F32Expression):I32Expression - Module#i32.trunc_s.f64(value:
F64Expression):I32Expression - Module#i32.trunc_u.f32(value:
F32Expression):I32Expression - Module#i32.trunc_u.f64(value:
F64Expression):I32Expression - Module#i32.reinterpret(value:
F32Expression):I32Expression - Module#i32.wrap(value:
I64Expression):I32Expression
- Module#i64.trunc_s.f32(value:
F32Expression):I64Expression - Module#i64.trunc_s.f64(value:
F64Expression):I64Expression - Module#i64.trunc_u.f32(value:
F32Expression):I64Expression - Module#i64.trunc_u.f64(value:
F64Expression):I64Expression - Module#i64.reinterpret(value:
F64Expression):I64Expression - Module#i64.extend_s(value:
I32Expression):I64Expression - Module#i64.extend_u(value:
I32Expression):I64Expression
- Module#f32.reinterpret(value:
I32Expression):F32Expression - Module#f32.convert_s.i32(value:
I32Expression):F32Expression - Module#f32.convert_s.i64(value:
I64Expression):F32Expression - Module#f32.convert_u.i32(value:
I32Expression):F32Expression - Module#f32.convert_u.i64(value:
I64Expression):F32Expression - Module#f32.demote(value:
F64Expression):F32Expression
- Module#f64.reinterpret(value:
I32Expression):F64Expression - Module#f64.convert_s.i32(value:
I32Expression):F64Expression - Module#f64.convert_s.i64(value:
I64Expression):F64Expression - Module#f64.convert_u.i32(value:
I32Expression):F64Expression - Module#f64.convert_u.i64(value:
I64Expression):F64Expression - Module#f64.promote(value:
F32Expression):F64Expression
-
Module#call(name:
string, operands:Expression[], returnType:Type):Expression
Creates a call to a function. Note that we must specify the return type here as we may not have created the function being called yet. -
Module#callImport(name:
string, operands:Expression[], returnType:Type):Expression
Similar to call, but calls an imported function. -
Module#callIndirect(target:
Expression, operands:Expression[], returnType:Type):Expression
Similar to call, but calls indirectly, i.e., via a function pointer, so an expression replaces the name as the called value.
Function call methods above are also aliased in underscore notation, e.g., call_indirect.
- Module#i32.load(offset:
number, align:number, ptr:Expression):I32Expression - Module#i32.load8_s(offset:
number, align:number, ptr:Expression):I32Expression - Module#i32.load8_u(offset:
number, align:number, ptr:Expression):I32Expression - Module#i32.load16_s(offset:
number, align:number, ptr:Expression):I32Expression - Module#i32.load16_u(offset:
number, align:number, ptr:Expression):I32Expression - Module#i32.store(offset:
number, align:number, ptr:Expression, value:I32Expression):Expression - Module#i32.store8(offset:
number, align:number, ptr:Expression, value:I32Expression):Expression - Module#i32.store16(offset:
number, align:number, ptr:Expression, value:I32Expression):Expression
- Module#i64.load(offset:
number, align:number, ptr:Expression):I64Expression - Module#i64.load8_s(offset:
number, align:number, ptr:Expression):I64Expression - Module#i64.load8_u(offset:
number, align:number, ptr:Expression):I64Expression - Module#i64.load16_s(offset:
number, align:number, ptr:Expression):I64Expression - Module#i64.load16_u(offset:
number, align:number, ptr:Expression):I64Expression - Module#i64.load32_s(offset:
number, align:number, ptr:Expression):I64Expression - Module#i64.load32_u(offset:
number, align:number, ptr:Expression):I64Expression - Module#i64.store(offset:
number, align:number, ptr:Expression, value:I64Expression):Expression - Module#i64.store8(offset:
number, align:number, ptr:Expression, value:I64Expression):Expression - Module#i64.store16(offset:
number, align:number, ptr:Expression, value:I64Expression):Expression - Module#i64.store32(offset:
number, align:number, ptr:Expression, value:I64Expression):Expression
- Module#f32.load(offset:
number, align:number, ptr:Expression):F32Expression - Module#f32.store(offset:
number, align:number, ptr:Expression, value:F32Expression):Expression
- Module#f64.load(offset:
number, align:number, ptr:Expression):F64Expression - Module#f64.store(offset:
number, align:number, ptr:Expression, value:F64Expression):Expression
- Module#currentMemory():
I32Expression - Module#growMemory(value:
number):I32Expression - Module#hasFeature(name:
string):Expression🦄
Host operation methods above are also aliased in underscore notation, e.g., current_memory.
- Module#i32.atomic.load(offset:
number, ptr:Expression):I32Expression - Module#i32.atomic.load8_u(offset:
number, ptr:Expression):I32Expression - Module#i32.atomic.load16_u(offset:
number, ptr:Expression):I32Expression - Module#i32.atomic.store(offset:
number, ptr:Expression, value:I32Expression):Expression - Module#i32.atomic.store8(offset:
number, ptr:Expression, value:I32Expression):Expression - Module#i32.atomic.store16(offset:
number, ptr:Expression, value:I32Expression):Expression
- Module#i64.atomic.load(offset:
number, ptr:Expression):I64Expression - Module#i64.atomic.load8_u(offset:
number, ptr:Expression):I64Expression - Module#i64.atomic.load16_u(offset:
number, ptr:Expression):I64Expression - Module#i64.atomic.load32_u(offset:
number, ptr:Expression):I64Expression - Module#i64.atomic.store(offset:
number, ptr:Expression, value:I64Expression):Expression - Module#i64.atomic.store8(offset:
number, ptr:Expression, value:I64Expression):Expression - Module#i64.atomic.store16(offset:
number, ptr:Expression, value:I64Expression):Expression - Module#i64.atomic.store32(offset:
number, ptr:Expression, value:I64Expression):Expression
- Module#i32.atomic.rmw.add(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw.sub(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw.and(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw.or(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw.xor(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw.xchg(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw.cmpxchg(offset:
number, ptr:Expression, expected:I32Expression, replacement:I32Expression):I32Expression - Module#i32.atomic.rmw8_u.add(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw8_u.sub(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw8_u.and(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw8_u.or(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw8_u.xor(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw8_u.xchg(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw8_u.cmpxchg(offset:
number, ptr:Expression, expected:I32Expression, replacement:I32Expression):I32Expression - Module#i32.atomic.rmw16_u.add(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw16_u.sub(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw16_u.and(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw16_u.or(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw16_u.xor(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw16_u.xchg(offset:
number, ptr:Expression, value:I32Expression):I32Expression - Module#i32.atomic.rmw16_u.cmpxchg(offset:
number, ptr:Expression, expected:I32Expression, replacement:I32Expression):I32Expression
- Module#i64.atomic.rmw.add(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw.sub(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw.and(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw.or(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw.xor(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw.xchg(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw.cmpxchg(offset:
number, ptr:Expression, expected:I64Expression, replacement:I64Expression):I64Expression - Module#i64.atomic.rmw8_u.add(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw8_u.sub(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw8_u.and(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw8_u.or(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw8_u.xor(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw8_u.xchg(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw8_u.cmpxchg(offset:
number, ptr:Expression, expected:I64Expression, replacement:I64Expression):I64Expression - Module#i64.atomic.rmw16_u.add(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw16_u.sub(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw16_u.and(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw16_u.or(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw16_u.xor(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw16_u.xchg(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw16_u.cmpxchg(offset:
number, ptr:Expression, expected:I64Expression, replacement:I64Expression):I64Expression - Module#i64.atomic.rmw32_u.add(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw32_u.sub(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw32_u.and(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw32_u.or(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw32_u.xor(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw32_u.xchg(offset:
number, ptr:Expression, value:I64Expression):I64Expression - Module#i64.atomic.rmw32_u.cmpxchg(offset:
number, ptr:Expression, expected:I64Expression, replacement:I64Expression):I64Expression
- Module#i32.wait(ptr:
Expression, expected:I32Expression, timeout:I64Expression):I32Expression - Module#i64.wait(ptr:
Expression, expected:I64Expression, timeout:I64Expression):I32Expression - Module#wake(ptr:
Expression, wakeCount:I64Expression):I64Expression
-
getExpressionId(expr:
Expression):ExpressionId
Gets the id (kind) of the specified expression. Possible values are:- InvalidId:
ExpressionId - BlockId:
ExpressionId - IfId:
ExpressionId - LoopId:
ExpressionId - BreakId:
ExpressionId - SwitchId:
ExpressionId - CallId:
ExpressionId - CallImportId:
ExpressionId - CallIndirectId:
ExpressionId - GetLocalId:
ExpressionId - SetLocalId:
ExpressionId - GetGlobalId:
ExpressionId - SetGlobalId:
ExpressionId - LoadId:
ExpressionId - StoreId:
ExpressionId - ConstId:
ExpressionId - UnaryId:
ExpressionId - BinaryId:
ExpressionId - SelectId:
ExpressionId - DropId:
ExpressionId - ReturnId:
ExpressionId - HostId:
ExpressionId - NopId:
ExpressionId - UnreachableId:
ExpressionId - AtomicCmpxchgId:
ExpressionId - AtomicRMWId:
ExpressionId - AtomicWaitId:
ExpressionId - AtomicWakeId:
ExpressionId
- InvalidId:
-
getExpressionType(expr:
Expression):Type
Gets the type of the specified expression. -
getConstValueI32(expr:
Expression):number
Gets the value of an i32.const (id=ConstId, type=i32) expression. -
getConstValueI64(expr:
Expression):{ low: number, high: number }
Gets the value of an i64.const (id=ConstId, type=i64) expression. -
getConstValueF32(expr:
Expression):number
Gets the value of an f32.const (id=ConstId, type=f32) expression. -
getConstValueF64(expr:
Expression):number
Gets the value of an f64.const (id=ConstId, type=f64) expression. -
getFunctionBody(func:
Function):Expression
Gets the body of a function.
-
new Relooper():
Relooper
Constructs a relooper instance. This lets you provide an arbitrary CFG, and the relooper will structure it for WebAssembly. -
Relooper#addBlock(code:
Expression):RelooperBlock
Adds a new block to the CFG, containing the provided code as its body. -
Relooper#addBranch(from:
RelooperBlock, to:RelooperBlock, condition:Expression, code:Expression):void
Adds a branch from a block to another block, with a condition (or nothing, if this is the default branch to take from the origin - each block must have one such branch), and optional code to execute on the branch (useful for phis). -
Relooper#addBlockWithSwitch(code:
Expression, condition:Expression):RelooperBlock
Adds a new block, which ends with a switch/br_table, with provided code and condition (that determines where we go in the switch). -
Relooper#addBranchForSwitch(from:
RelooperBlock, to:RelooperBlock, indexes:number[], code:Expression):void
Adds a branch from a block ending in a switch, to another block, using an array of indexes that determine where to go, and optional code to execute on the branch. -
Relooper#renderAndDispose(entry:
RelooperBlock, labelHelper:number, module:Module):Expression
Renders and cleans up the Relooper instance. Call this after you have created all the blocks and branches, giving it the entry block (where control flow begins), a label helper variable (an index of a local we can use, necessary for irreducible control flow), and the module. This returns an expression - normal WebAssembly code - that you can use normally anywhere.
Clone the GitHub repository including submodules and install the development dependencies:
$> git clone --recursive https://github.com/AssemblyScript/binaryen.js.git
$> cd binaryen.js
$> npm install
Make sure Emscripten is properly set up on your system.
Afterwards, to build the binaryen submodule to index.js, run:
$> npm run build
To run the tests, do:
$> npm test
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