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FuzzILLifter.swift
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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import Foundation
/// Lifter to convert FuzzIL into its human readable text format
public class FuzzILLifter: Lifter {
public init() {}
private func lift(_ v: Variable) -> String {
return "v\(v.number)"
}
private func lift(_ instr : Instruction, with w: inout ScriptWriter) {
func input(_ n: Int) -> String {
return lift(instr.input(n))
}
func output() -> String {
return lift(instr.output)
}
func innerOutput() -> String {
return lift(instr.innerOutput)
}
switch instr.op.opcode {
case .loadInteger(let op):
w.emit("\(output()) <- LoadInteger '\(op.value)'")
case .loadBigInt(let op):
w.emit("\(output()) <- LoadBigInt '\(op.value)'")
case .loadFloat(let op):
w.emit("\(output()) <- LoadFloat '\(op.value)'")
case .loadString(let op):
w.emit("\(output()) <- LoadString '\(op.value)'")
case .loadRegExp(let op):
w.emit("\(output()) <- LoadRegExp '\(op.pattern)' '\(op.flags.asString())'")
case .loadBoolean(let op):
w.emit("\(output()) <- LoadBoolean '\(op.value)'")
case .loadUndefined:
w.emit("\(output()) <- LoadUndefined")
case .loadNull:
w.emit("\(output()) <- LoadNull")
case .loadThis:
w.emit("\(output()) <- LoadThis")
case .loadArguments:
w.emit("\(output()) <- LoadArguments")
case .createNamedVariable(let op):
if op.hasInitialValue {
w.emit("\(output()) <- CreateNamedVariable '\(op.variableName)', '\(op.declarationMode)', \(input(0))")
} else {
w.emit("\(output()) <- CreateNamedVariable '\(op.variableName)', '\(op.declarationMode)'")
}
case .loadDisposableVariable:
w.emit("\(output()) <- LoadDisposableVariable \(input(0))")
case .loadAsyncDisposableVariable:
w.emit("\(output()) <- LoadAsyncDisposableVariable \(input(0))")
case .beginObjectLiteral:
w.emit("BeginObjectLiteral")
w.increaseIndentionLevel()
case .objectLiteralAddProperty(let op):
w.emit("ObjectLiteralAddProperty `\(op.propertyName)`, \(input(0))")
case .objectLiteralAddElement(let op):
w.emit("ObjectLiteralAddElement `\(op.index)`, \(input(0))")
case .objectLiteralAddComputedProperty:
w.emit("ObjectLiteralAddComputedProperty \(input(0)), \(input(1))")
case .objectLiteralSetPrototype:
w.emit("ObjectLiteralSetPrototype \(input(0))")
case .beginObjectLiteralMethod(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginObjectLiteralMethod `\(op.methodName)` -> \(params)")
w.increaseIndentionLevel()
case .endObjectLiteralMethod:
w.decreaseIndentionLevel()
w.emit("EndObjectLiteralMethod")
case .beginObjectLiteralComputedMethod:
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginObjectLiteralComputedMethod \(input(0)) -> \(params)")
w.increaseIndentionLevel()
case .endObjectLiteralComputedMethod:
w.decreaseIndentionLevel()
w.emit("EndObjectLiteralComputedMethod")
case .beginObjectLiteralGetter(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginObjectLiteralGetter `\(op.propertyName)` -> \(params)")
w.increaseIndentionLevel()
case .endObjectLiteralGetter:
w.decreaseIndentionLevel()
w.emit("EndObjectLiteralGetter")
case .beginObjectLiteralSetter(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginObjectLiteralSetter `\(op.propertyName)` -> \(params)")
w.increaseIndentionLevel()
case .endObjectLiteralSetter:
w.decreaseIndentionLevel()
w.emit("EndObjectLiteralSetter")
case .objectLiteralCopyProperties:
w.emit("ObjectLiteralCopyProperties \(input(0))")
case .endObjectLiteral:
w.decreaseIndentionLevel()
w.emit("\(output()) <- EndObjectLiteral")
case .beginClassDefinition(let op):
var line = "\(output()) <- BeginClassDefinition"
if op.hasSuperclass {
line += " \(input(0))"
}
w.emit(line)
w.increaseIndentionLevel()
case .beginClassConstructor:
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginClassConstructor -> \(params)")
w.increaseIndentionLevel()
case .endClassConstructor:
w.decreaseIndentionLevel()
w.emit("EndClassConstructor")
case .classAddInstanceProperty(let op):
if op.hasValue {
w.emit("ClassAddInstanceProperty '\(op.propertyName)' \(input(0))")
} else {
w.emit("ClassAddInstanceProperty '\(op.propertyName)'")
}
case .classAddInstanceElement(let op):
if op.hasValue {
w.emit("ClassAddInstanceElement '\(op.index)' \(input(0))")
} else {
w.emit("ClassAddInstanceElement '\(op.index)'")
}
case .classAddInstanceComputedProperty(let op):
if op.hasValue {
w.emit("ClassAddInstanceComputedProperty \(input(0)) \(input(1))")
} else {
w.emit("ClassAddInstanceComputedProperty \(input(0))")
}
case .beginClassInstanceMethod(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginClassInstanceMethod '\(op.methodName)' -> \(params)")
w.increaseIndentionLevel()
case .endClassInstanceMethod:
w.decreaseIndentionLevel()
w.emit("EndClassInstanceMethod")
case .beginClassInstanceGetter(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginClassInstanceGetter `\(op.propertyName)` -> \(params)")
w.increaseIndentionLevel()
case .endClassInstanceGetter:
w.decreaseIndentionLevel()
w.emit("EndClassInstanceGetter")
case .beginClassInstanceSetter(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginClassInstanceSetter `\(op.propertyName)` -> \(params)")
w.increaseIndentionLevel()
case .endClassInstanceSetter:
w.decreaseIndentionLevel()
w.emit("EndClassInstanceSetter")
case .classAddStaticProperty(let op):
if op.hasValue {
w.emit("ClassAddStaticProperty '\(op.propertyName)' \(input(0))")
} else {
w.emit("ClassAddStaticProperty '\(op.propertyName)'")
}
case .classAddStaticElement(let op):
if op.hasValue {
w.emit("ClassAddStaticElement '\(op.index)' \(input(0))")
} else {
w.emit("ClassAddStaticElement '\(op.index)'")
}
case .classAddStaticComputedProperty(let op):
if op.hasValue {
w.emit("ClassAddStaticComputedProperty \(input(0)) \(input(1))")
} else {
w.emit("ClassAddStaticComputedProperty \(input(0))")
}
case .beginClassStaticInitializer:
w.emit("BeginClassStaticInitializer -> \(lift(instr.innerOutput))")
w.increaseIndentionLevel()
case .endClassStaticInitializer:
w.decreaseIndentionLevel()
w.emit("EndClassStaticInitializer")
case .beginClassStaticMethod(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginClassStaticMethod '\(op.methodName)' -> \(params)")
w.increaseIndentionLevel()
case .endClassStaticMethod:
w.decreaseIndentionLevel()
w.emit("EndClassStaticMethod")
case .beginClassStaticGetter(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginClassStaticGetter `\(op.propertyName)` -> \(params)")
w.increaseIndentionLevel()
case .endClassStaticGetter:
w.decreaseIndentionLevel()
w.emit("EndClassStaticGetter")
case .beginClassStaticSetter(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginClassStaticSetter `\(op.propertyName)` -> \(params)")
w.increaseIndentionLevel()
case .endClassStaticSetter:
w.decreaseIndentionLevel()
w.emit("EndClassStaticSetter")
case .classAddPrivateInstanceProperty(let op):
if op.hasValue {
w.emit("ClassAddPrivateInstanceProperty '\(op.propertyName)' \(input(0))")
} else {
w.emit("ClassAddPrivateInstanceProperty '\(op.propertyName)'")
}
case .beginClassPrivateInstanceMethod(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginClassPrivateInstanceMethod '\(op.methodName)' -> \(params)")
w.increaseIndentionLevel()
case .endClassPrivateInstanceMethod:
w.decreaseIndentionLevel()
w.emit("EndClassPrivateInstanceMethod")
case .classAddPrivateStaticProperty(let op):
if op.hasValue {
w.emit("ClassAddPrivateStaticProperty '\(op.propertyName)' \(input(0))")
} else {
w.emit("ClassAddPrivateStaticProperty '\(op.propertyName)'")
}
case .beginClassPrivateStaticMethod(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginClassPrivateStaticMethod '\(op.methodName)' -> \(params)")
w.increaseIndentionLevel()
case .endClassPrivateStaticMethod:
w.decreaseIndentionLevel()
w.emit("EndClassPrivateStaticMethod")
case .endClassDefinition:
w.decreaseIndentionLevel()
w.emit("EndClassDefinition")
case .createArray:
let elems = instr.inputs.map(lift).joined(separator: ", ")
w.emit("\(output()) <- CreateArray [\(elems)]")
case .createIntArray(let op):
w.emit("\(instr.output) <- CreateIntArray \(op.values)")
case .createFloatArray(let op):
w.emit("\(instr.output) <- CreateFloatArray \(op.values)")
case .createArrayWithSpread(let op):
var elems = [String]()
for (i, v) in instr.inputs.enumerated() {
if op.spreads[i] {
elems.append("...\(lift(v))")
} else {
elems.append(lift(v))
}
}
w.emit("\(output()) <- CreateArrayWithSpread [\(elems.joined(separator: ", "))]")
case .createTemplateString(let op):
let parts = op.parts.map({ "'\($0)'" }).joined(separator: ", ")
let values = instr.inputs.map(lift).joined(separator: ", ")
w.emit("\(output()) <- CreateTemplateString [\(parts)], [\(values)]")
case .getProperty(let op):
let opcode = op.isGuarded ? "GetProperty (guarded)" : "GetProperty"
w.emit("\(output()) <- \(opcode) \(input(0)), '\(op.propertyName)'")
case .setProperty(let op):
w.emit("SetProperty \(input(0)), '\(op.propertyName)', \(input(1))")
case .updateProperty(let op):
w.emit("UpdateProperty \(input(0)), '\(op.op.token)', \(input(1))")
case .deleteProperty(let op):
let opcode = op.isGuarded ? "DeleteProperty (guarded)" : "DeleteProperty"
w.emit("\(output()) <- \(opcode) \(input(0)), '\(op.propertyName)'")
case .configureProperty(let op):
w.emit("ConfigureProperty \(input(0)), '\(op.propertyName)', '\(op.flags)', '\(op.type)' [\(instr.inputs.suffix(from: 1).map(lift))]")
case .getElement(let op):
let opcode = op.isGuarded ? "GetElement (guarded)" : "GetElement"
w.emit("\(output()) <- \(opcode) \(input(0)), '\(op.index)'")
case .setElement(let op):
w.emit("SetElement \(input(0)), '\(op.index)', \(input(1))")
case .updateElement(let op):
w.emit("UpdateElement \(instr.input(0)), '\(op.index)', '\(op.op.token)', \(input(1))")
case .deleteElement(let op):
let opcode = op.isGuarded ? "DeleteElement (guarded)" : "DeleteElement"
w.emit("\(output()) <- \(opcode) \(input(0)), '\(op.index)'")
case .configureElement(let op):
w.emit("ConfigureElement \(input(0)), '\(op.index)', '\(op.flags)', '\(op.type)' [\(instr.inputs.suffix(from: 1).map(lift))]")
case .getComputedProperty(let op):
let opcode = op.isGuarded ? "GetComputedProperty (guarded)" : "GetComputedProperty"
w.emit("\(output()) <- \(opcode) \(input(0)), \(input(1))")
case .setComputedProperty:
w.emit("SetComputedProperty \(input(0)), \(input(1)), \(input(2))")
case .updateComputedProperty(let op):
w.emit("UpdateComputedProperty \(input(0)), \(input(1)), '\(op.op.token)',\(input(2))")
case .deleteComputedProperty(let op):
let opcode = op.isGuarded ? "DeleteComputedProperty (guarded)" : "DeleteComputedProperty"
w.emit("\(output()) <- \(opcode) \(input(0)), \(input(1))")
case .configureComputedProperty(let op):
w.emit("ConfigureComputedProperty \(input(0)), \(input(1)), '\(op.flags)', '\(op.type)' [\(instr.inputs.suffix(from: 2).map(lift))]")
case .typeOf:
w.emit("\(output()) <- TypeOf \(input(0))")
case .void:
w.emit("\(output()) <- Void_ \(input(0))")
case .testInstanceOf:
w.emit("\(output()) <- TestInstanceOf \(input(0)), \(input(1))")
case .testIn:
w.emit("\(output()) <- TestIn \(input(0)), \(input(1))")
case .beginPlainFunction(let op as BeginAnyFunction),
.beginArrowFunction(let op as BeginAnyFunction),
.beginGeneratorFunction(let op as BeginAnyFunction),
.beginAsyncFunction(let op as BeginAnyFunction),
.beginAsyncArrowFunction(let op as BeginAnyFunction),
.beginAsyncGeneratorFunction(let op as BeginAnyFunction):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("\(output()) <- \(op.name) -> \(params)")
w.increaseIndentionLevel()
case .endPlainFunction(let op as EndAnyFunction),
.endArrowFunction(let op as EndAnyFunction),
.endGeneratorFunction(let op as EndAnyFunction),
.endAsyncFunction(let op as EndAnyFunction),
.endAsyncArrowFunction(let op as EndAnyFunction),
.endAsyncGeneratorFunction(let op as EndAnyFunction):
w.decreaseIndentionLevel()
w.emit("\(op.name)")
case .beginConstructor(let op):
let params = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("\(output()) <- \(op.name) -> \(params)")
w.increaseIndentionLevel()
case .endConstructor(let op):
w.decreaseIndentionLevel()
w.emit("\(op.name)")
case .directive(let op):
w.emit("Directive '\(op.content)'")
case .return(let op):
if op.hasReturnValue {
w.emit("Return \(input(0))")
} else {
w.emit("Return")
}
case .yield(let op):
if op.hasArgument {
w.emit("\(output()) <- Yield \(input(0))")
} else {
w.emit("\(output()) <- Yield")
}
case .yieldEach:
w.emit("YieldEach \(input(0))")
case .await:
w.emit("\(output()) <- Await \(input(0))")
case .callFunction(let op):
let opcode = op.isGuarded ? "CallFunction (guarded)" : "CallFunction"
w.emit("\(output()) <- \(opcode) \(input(0)), [\(liftCallArguments(instr.variadicInputs))]")
case .callFunctionWithSpread(let op):
let opcode = op.isGuarded ? "CallFunctionWithSpread (guarded)" : "CallFunctionWithSpread"
w.emit("\(output()) <- \(opcode) \(input(0)), [\(liftCallArguments(instr.variadicInputs, spreading: op.spreads))]")
case .construct(let op):
let opcode = op.isGuarded ? "Construct (guarded)" : "Construct"
w.emit("\(output()) <- \(opcode) \(input(0)), [\(liftCallArguments(instr.variadicInputs))]")
case .constructWithSpread(let op):
let opcode = op.isGuarded ? "ConstructWithSpread (guarded)" : "ConstructWithSpread"
w.emit("\(output()) <- \(opcode) \(input(0)), [\(liftCallArguments(instr.variadicInputs, spreading: op.spreads))]")
case .callMethod(let op):
let opcode = op.isGuarded ? "CallMethod (guarded)" : "CallMethod"
w.emit("\(output()) <- \(opcode) \(input(0)), '\(op.methodName)', [\(liftCallArguments(instr.variadicInputs))]")
case .callMethodWithSpread(let op):
let opcode = op.isGuarded ? "CallMethodWithSpread (guarded)" : "CallMethodWithSpread"
w.emit("\(output()) <- \(opcode) \(input(0)), '\(op.methodName)', [\(liftCallArguments(instr.variadicInputs, spreading: op.spreads))]")
case .callComputedMethod(let op):
let opcode = op.isGuarded ? "CallComputedMethod (guarded)" : "CallComputedMethod"
w.emit("\(output()) <- \(opcode) \(input(0)), \(input(1)), [\(liftCallArguments(instr.variadicInputs))]")
case .callComputedMethodWithSpread(let op):
let opcode = op.isGuarded ? "CallComputedMethodWithSpread (guarded)" : "CallComputedMethodWithSpread"
w.emit("\(output()) <- \(opcode) \(input(0)), \(input(1)), [\(liftCallArguments(instr.variadicInputs, spreading: op.spreads))]")
case .unaryOperation(let op):
if op.op.isPostfix {
w.emit("\(output()) <- UnaryOperation \(input(0)), '\(op.op.token)'")
} else {
w.emit("\(output()) <- UnaryOperation '\(op.op.token)', \(input(0))")
}
case .binaryOperation(let op):
w.emit("\(output()) <- BinaryOperation \(input(0)), '\(op.op.token)', \(input(1))")
case .ternaryOperation:
w.emit("\(output()) <- TernaryOperation \(input(0)), \(input(1)), \(input(2))")
case .reassign:
w.emit("Reassign \(input(0)), \(input(1))")
case .update(let op):
w.emit("Update \(instr.input(0)), '\(op.op.token)', \(input(1))")
case .dup:
w.emit("\(output()) <- Dup \(input(0))")
case .destructArray(let op):
let outputs = instr.outputs.map(lift)
w.emit("[\(liftArrayDestructPattern(indices: op.indices, outputs: outputs, hasRestElement: op.lastIsRest))] <- DestructArray \(input(0))")
case .destructArrayAndReassign(let op):
let outputs = instr.inputs.dropFirst().map(lift)
w.emit("[\(liftArrayDestructPattern(indices: op.indices, outputs: outputs, hasRestElement: op.lastIsRest))] <- DestructArrayAndReassign \(input(0))")
case .destructObject(let op):
let outputs = instr.outputs.map(lift)
w.emit("{\(liftObjectDestructPattern(properties: op.properties, outputs: outputs, hasRestElement: op.hasRestElement))} <- DestructObject \(input(0))")
case .destructObjectAndReassign(let op):
let outputs = instr.inputs.dropFirst().map(lift)
w.emit("{\(liftObjectDestructPattern(properties: op.properties, outputs: outputs, hasRestElement: op.hasRestElement))} <- DestructObjectAndReassign \(input(0))")
case .compare(let op):
w.emit("\(output()) <- Compare \(input(0)), '\(op.op.token)', \(input(1))")
case .eval(let op):
let args = instr.inputs.map(lift).joined(separator: ", ")
if op.hasOutput {
w.emit("\(output()) <- Eval '\(op.code)', [\(args)]")
} else {
w.emit("Eval '\(op.code)', [\(args)]")
}
case .explore:
let arguments = instr.inputs.suffix(from: 1).map(lift).joined(separator: ", ")
w.emit("Explore \(instr.input(0)), [\(arguments)]")
case .probe:
w.emit("Probe \(instr.input(0))")
case .fixup(let op):
if op.hasOutput {
w.emit("\(output()) <- Fixup \(op.id)")
} else {
w.emit("Fixup \(op.id)")
}
case .beginWith:
w.emit("BeginWith \(input(0))")
w.increaseIndentionLevel()
case .endWith:
w.decreaseIndentionLevel()
w.emit("EndWith")
case .nop:
w.emit("Nop")
case .beginIf(let op):
let mode = op.inverted ? "(inverted) " : ""
w.emit("BeginIf \(mode)\(input(0))")
w.increaseIndentionLevel()
case .beginElse:
w.decreaseIndentionLevel()
w.emit("BeginElse")
w.increaseIndentionLevel()
case .endIf:
w.decreaseIndentionLevel()
w.emit("EndIf")
case .beginSwitch:
w.emit("BeginSwitch \(input(0))")
w.increaseIndentionLevel()
case .beginSwitchCase:
w.emit("BeginSwitchCase \(input(0))")
w.increaseIndentionLevel()
case .beginSwitchDefaultCase:
w.emit("BeginSwitchDefaultCase")
w.increaseIndentionLevel()
case .endSwitchCase(let op):
w.decreaseIndentionLevel()
w.emit("EndSwitchCase \(op.fallsThrough ? "fallsThrough" : "")")
case .endSwitch:
w.decreaseIndentionLevel()
w.emit("EndSwitch")
case .callSuperConstructor:
w.emit("CallSuperConstructor [\(liftCallArguments(instr.variadicInputs))]")
case .callSuperMethod(let op):
w.emit("\(output()) <- CallSuperMethod '\(op.methodName)', [\(liftCallArguments(instr.variadicInputs))]")
case .getPrivateProperty(let op):
w.emit("\(output()) <- GetPrivateProperty '\(op.propertyName)'")
case .setPrivateProperty(let op):
w.emit("SetPrivateProperty '\(op.propertyName)', \(input(0))")
case .updatePrivateProperty(let op):
w.emit("UpdatePrivateProperty '\(op.propertyName)', '\(op.op.token)', \(input(0))")
case .callPrivateMethod(let op):
w.emit("\(output()) <- CallPrivateMethod \(input(0)), '\(op.methodName)', [\(liftCallArguments(instr.variadicInputs))]")
case .getSuperProperty(let op):
w.emit("\(output()) <- GetSuperProperty '\(op.propertyName)'")
case .setSuperProperty(let op):
w.emit("SetSuperProperty '\(op.propertyName)', \(input(0))")
case .getComputedSuperProperty(_):
w.emit("\(output()) <- GetComputedSuperProperty \(input(0))")
case .setComputedSuperProperty(_):
w.emit("SetComputedSuperProperty \(input(0)), \(input(1))")
case .updateSuperProperty(let op):
w.emit("UpdateSuperProperty '\(op.propertyName)', '\(op.op.token)', \(input(0))")
case .beginWhileLoopHeader:
w.emit("BeginWhileLoopHeader")
w.increaseIndentionLevel()
case .beginWhileLoopBody:
w.decreaseIndentionLevel()
w.emit("BeginWhileLoopBody \(input(0))")
w.increaseIndentionLevel()
case .endWhileLoop:
w.decreaseIndentionLevel()
w.emit("EndWhileLoop")
case .beginDoWhileLoopBody:
w.emit("BeginDoWhileLoopBody")
w.increaseIndentionLevel()
case .beginDoWhileLoopHeader:
w.decreaseIndentionLevel()
w.emit("BeginDoWhileLoopHeader")
w.increaseIndentionLevel()
case .endDoWhileLoop:
w.decreaseIndentionLevel()
w.emit("EndDoWhileLoop \(input(0))")
case .beginForLoopInitializer:
w.emit("BeginForLoopInitializer")
w.increaseIndentionLevel()
case .beginForLoopCondition(let op):
w.decreaseIndentionLevel()
if op.numLoopVariables > 0 {
let loopVariables = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginForLoopCondition -> \(loopVariables)")
} else {
w.emit("BeginForLoopCondition")
}
w.increaseIndentionLevel()
case .beginForLoopAfterthought(let op):
w.decreaseIndentionLevel()
if op.numLoopVariables > 0 {
let loopVariables = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginForLoopAfterthought \(input(0)) -> \(loopVariables)")
} else {
w.emit("BeginForLoopAfterthought \(input(0))")
}
w.increaseIndentionLevel()
case .beginForLoopBody(let op):
w.decreaseIndentionLevel()
if op.numLoopVariables > 0 {
let loopVariables = instr.innerOutputs.map(lift).joined(separator: ", ")
w.emit("BeginForLoopBody -> \(loopVariables)")
} else {
w.emit("BeginForLoopBody")
}
w.increaseIndentionLevel()
case .endForLoop:
w.decreaseIndentionLevel()
w.emit("EndForLoop")
case .beginForInLoop:
w.emit("BeginForInLoop \(input(0)) -> \(innerOutput())")
w.increaseIndentionLevel()
case .endForInLoop:
w.decreaseIndentionLevel()
w.emit("EndForInLoop")
case .beginForOfLoop:
w.emit("BeginForOfLoop \(input(0)) -> \(innerOutput())")
w.increaseIndentionLevel()
case .beginForOfLoopWithDestruct(let op):
let outputs = instr.innerOutputs.map(lift)
w.emit("BeginForOfLoopWithDestruct \(input(0)) -> [\(liftArrayDestructPattern(indices: op.indices, outputs: outputs, hasRestElement: op.hasRestElement))]")
w.increaseIndentionLevel()
case .endForOfLoop:
w.decreaseIndentionLevel()
w.emit("EndForOfLoop")
case .beginRepeatLoop(let op):
if op.exposesLoopCounter {
w.emit("BeginRepeatLoop '\(op.iterations)' -> \(innerOutput())")
} else {
w.emit("BeginRepeatLoop '\(op.iterations)'")
}
w.increaseIndentionLevel()
case .endRepeatLoop:
w.decreaseIndentionLevel()
w.emit("EndRepeatLoop")
case .loopBreak,
.switchBreak:
w.emit("Break")
case .loopContinue:
w.emit("Continue")
case .beginTry:
w.emit("BeginTry")
w.increaseIndentionLevel()
case .beginCatch:
w.decreaseIndentionLevel()
w.emit("BeginCatch -> \(innerOutput())")
w.increaseIndentionLevel()
case .beginFinally:
w.decreaseIndentionLevel()
w.emit("BeginFinally")
w.increaseIndentionLevel()
case .endTryCatchFinally:
w.decreaseIndentionLevel()
w.emit("EndTryCatch")
case .throwException:
w.emit("ThrowException \(input(0))")
case .beginCodeString:
w.emit("\(output()) <- BeginCodeString")
w.increaseIndentionLevel()
case .endCodeString:
w.decreaseIndentionLevel()
w.emit("EndCodeString")
case .beginBlockStatement:
w.emit("BeginBlockStatement")
w.increaseIndentionLevel()
case .endBlockStatement:
w.decreaseIndentionLevel()
w.emit("EndBlockStatement")
case .loadNewTarget:
w.emit("\(output()) <- LoadNewTarget")
case .beginWasmModule:
w.emit("BeginWasmModule")
w.increaseIndentionLevel()
case .endWasmModule:
w.decreaseIndentionLevel()
w.emit("\(output()) <- EndWasmModule")
case .createWasmGlobal(let op):
let isMutable = op.isMutable ? ", mutable" : ""
w.emit("\(output()) <- CreateWasmGlobal \(op.value.typeString()): \(op.value.valueToString())\(isMutable)")
case .createWasmMemory(let op):
let maxPagesStr = op.memType.limits.max != nil ? "\(op.memType.limits.max!)" : ""
let isMem64Str = op.memType.isMemory64 ? " memory64" : ""
let sharedStr = op.memType.isShared ? " shared" : ""
w.emit("\(output()) <- CreateWasmMemory [\(op.memType.limits.min),\(maxPagesStr)],\(isMem64Str)\(sharedStr)")
case .createWasmTable(let op):
var maxSizeStr = ""
if let maxSize = op.tableType.limits.max {
maxSizeStr = "\(maxSize)"
}
w.emit("\(output()) <- CreateWasmTable \(op.tableType.elementType) [\(op.tableType.limits.min),\(maxSizeStr)]")
case .createWasmJSTag(_):
w.emit("\(output()) <- CreateWasmJSTag")
case .createWasmTag(let op):
w.emit("\(output()) <- CreateWasmTag \(op.parameters)")
case .wrapPromising(_):
w.emit("\(output()) <- WrapPromising \(input(0))")
case .wrapSuspending(_):
w.emit("\(output()) <- WrapSuspending \(input(0))")
case .bindMethod(_):
w.emit("\(output()) <- BindMethod \(input(0))")
// Wasm Instructions
case .beginWasmFunction(let op):
// TODO(cffsmith): do this properly?
w.emit("BeginWasmFunction (\(op.signature)) -> [\(liftCallArguments(instr.innerOutputs))]")
w.increaseIndentionLevel()
case .endWasmFunction:
w.decreaseIndentionLevel()
w.emit("\(output()) <- EndWasmFunction")
case .wasmDefineGlobal(let op):
w.emit("\(output()) <- WasmDefineGlobal \(op.wasmGlobal)")
case .wasmDefineTable(let op):
let entries = op.definedEntryIndices.enumerated().map { index, entry in
"\(entry) : \(input(index))"
}.joined(separator: ", ")
w.emit("\(output()) <- WasmDefineTable \(op.tableType.elementType), (\(op.tableType.limits.min), \(String(describing: op.tableType.limits.max))), [\(entries)]")
case .wasmDefineMemory(let op):
assert(op.wasmMemory.isWasmMemoryType)
let mem = op.wasmMemory.wasmMemoryType!
let maxPagesStr = mem.limits.max != nil ? "\(mem.limits.max!)" : ""
let isMem64Str = mem.isMemory64 ? " memory64" : ""
let sharedStr = mem.isShared ? " shared" : ""
w.emit("\(output()) <- WasmDefineMemory [\(mem.limits.min),\(maxPagesStr)],\(isMem64Str)\(sharedStr)")
case .wasmDefineTag(let op):
w.emit("\(output()) <- WasmDefineTag \(op.parameters)")
case .wasmLoadGlobal(_):
w.emit("\(output()) <- WasmLoadGlobal \(input(0))")
case .wasmTableGet(_):
w.emit("\(output()) <- WasmTableGet \(input(0))[\(input(1))]")
case .wasmTableSet(_):
w.emit("WasmTabletSet \(input(0))[\(input(1))] <- \(input(2))")
case .wasmMemoryLoad(let op):
w.emit("\(output()) <- WasmMemoryLoad '\(op.loadType)' \(input(0))[\(input(1)) + \(op.staticOffset)]")
case .wasmMemoryStore(let op):
w.emit("WasmMemoryStore '\(op.storeType)' \(input(0))[\(input(1)) + \(op.staticOffset)] <- \(input(2))")
case .wasmStoreGlobal(_):
w.emit("WasmStoreGlobal \(input(0)) <- \(input(1))")
case .consti64(let op):
w.emit("\(output()) <- Consti64 '\(op.value)'")
case .consti32(let op):
w.emit("\(output()) <- Consti32 '\(op.value)'")
case .constf32(let op):
w.emit("\(output()) <- Constf32 '\(op.value)'")
case .constf64(let op):
w.emit("\(output()) <- Constf64 '\(op.value)'")
case .wasmi64BinOp(let op):
w.emit("\(output()) <- Wasmi64BinOp \(input(0)) \(op.binOpKind) \(input(1))")
case .wasmi32BinOp(let op):
w.emit("\(output()) <- Wasmi32BinOp \(input(0)) \(op.binOpKind) \(input(1))")
case .wasmf64BinOp(let op):
w.emit("\(output()) <- Wasmf64BinOp \(input(0)) \(op.binOpKind) \(input(1))")
case .wasmf32BinOp(let op):
w.emit("\(output()) <- Wasmf32BinOp \(input(0)) \(op.binOpKind) \(input(1))")
case .wasmi64CompareOp(let op):
w.emit("\(output()) <- Wasmi64CompareOp \(input(0)) \(op.compareOpKind) \(input(1))")
case .wasmi32CompareOp(let op):
w.emit("\(output()) <- Wasmi32CompareOp \(input(0)) \(op.compareOpKind) \(input(1))")
case .wasmf64CompareOp(let op):
w.emit("\(output()) <- Wasmf64CompareOp \(input(0)) \(op.compareOpKind) \(input(1))")
case .wasmf32CompareOp(let op):
w.emit("\(output()) <- Wasmf32CompareOp \(input(0)) \(op.compareOpKind) \(input(1))")
case .wasmi64EqualZero(_):
w.emit("\(output()) <- Wasmi64EqualZero \(input(0))")
case .wasmi32EqualZero(_):
w.emit("\(output()) <- Wasmi32EqualZero \(input(0))")
case .wasmi64UnOp(let op):
w.emit("\(output()) <- Wasmi64UnOp \(op.unOpKind)(\(input(0)))")
case .wasmi32UnOp(let op):
w.emit("\(output()) <- Wasmi32UnOp \(op.unOpKind)(\(input(0)))")
case .wasmf64UnOp(let op):
w.emit("\(output()) <- Wasmf64UnOp \(op.unOpKind)(\(input(0)))")
case .wasmf32UnOp(let op):
w.emit("\(output()) <- Wasmf32UnOp \(op.unOpKind)(\(input(0)))")
// Numerical Conversion Operations
case .wasmWrapi64Toi32(_):
w.emit("\(output()) <- WasmWrapi64Toi32 \(input(0))")
case .wasmTruncatef32Toi32(let op):
w.emit("\(output()) <- WasmTruncatef32Toi32 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmTruncatef64Toi32(let op):
w.emit("\(output()) <- WasmTruncatef64Toi32 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmExtendi32Toi64(let op):
w.emit("\(output()) <- WasmExtendi32Toi64 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmTruncatef32Toi64(let op):
w.emit("\(output()) <- WasmTruncatef32Toi64 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmTruncatef64Toi64(let op):
w.emit("\(output()) <- WasmTruncatef64Toi64 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmConverti32Tof32(let op):
w.emit("\(output()) <- WasmConverti32Tof32 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmConverti64Tof32(let op):
w.emit("\(output()) <- WasmConverti64Tof32 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmDemotef64Tof32(_):
w.emit("\(output()) <- WasmDemotef64Tof32 \(input(0))")
case .wasmConverti32Tof64(let op):
w.emit("\(output()) <- WasmConverti32Tof64 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmConverti64Tof64(let op):
w.emit("\(output()) <- WasmConverti64Tof64 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmPromotef32Tof64(_):
w.emit("\(output()) <- WasmPromotef32Tof64 \(input(0))")
case .wasmReinterpretf32Asi32(_):
w.emit("\(output()) <- WasmReinterpretf32Asi32 \(input(0))")
case .wasmReinterpretf64Asi64(_):
w.emit("\(output()) <- WasmReinterpretf64Asi64 \(input(0))")
case .wasmReinterpreti32Asf32(_):
w.emit("\(output()) <- WasmReinterpreti32Asf32 \(input(0))")
case .wasmReinterpreti64Asf64(_):
w.emit("\(output()) <- WasmReinterpreti64Asf64 \(input(0))")
case .wasmSignExtend8Intoi32(_):
w.emit("\(output()) <- WasmSignExtend8Intoi32 \(input(0))")
case .wasmSignExtend16Intoi32(_):
w.emit("\(output()) <- WasmSignExtend16Intoi32 \(input(0))")
case .wasmSignExtend8Intoi64(_):
w.emit("\(output()) <- WasmSignExtend8Intoi64 \(input(0))")
case .wasmSignExtend16Intoi64(_):
w.emit("\(output()) <- WasmSignExtend16Intoi64 \(input(0))")
case .wasmSignExtend32Intoi64(_):
w.emit("\(output()) <- WasmSignExtend32Intoi64 \(input(0))")
case .wasmTruncateSatf32Toi32(let op):
w.emit("\(output()) <- WasmTruncateSatf32Toi32 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmTruncateSatf64Toi32(let op):
w.emit("\(output()) <- WasmTruncateSatf64Toi32 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmTruncateSatf32Toi64(let op):
w.emit("\(output()) <- WasmTruncateSatf32Toi64 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmTruncateSatf64Toi64(let op):
w.emit("\(output()) <- WasmTruncateSatf64Toi64 \(input(0)) (\(op.isSigned ? "signed" : "unsigned"))")
case .wasmReturn(let op):
if op.numInputs > 0 {
w.emit("WasmReturn \(input(0))")
} else {
w.emit("WasmReturn")
}
case .wasmJsCall(let op):
var arguments: [Variable] = []
for i in 0..<op.functionSignature.parameters.count {
arguments.append(instr.input(i + 1))
}
if op.functionSignature.outputType.Is(.nothing) {
w.emit("WasmJsCall(\(op.functionSignature)) \(instr.input(0)) [\(liftCallArguments(arguments[...]))]")
} else {
w.emit("\(output()) <- WasmJsCall(\(op.functionSignature)) \(instr.input(0)) [\(liftCallArguments(arguments[...]))]")
}
case .wasmBeginBlock(let op):
// TODO(cffsmith): Maybe lift labels as e.g. L7 or something like that?
let inputs = instr.inputs.map(lift).joined(separator: ", ")
w.emit("WasmBeginBlock (\(op.signature)) [\(inputs)] -> L:\(instr.innerOutput(0)) [\(liftCallArguments(instr.innerOutputs(1...)))]")
w.increaseIndentionLevel()
case .wasmEndBlock(let op):
w.decreaseIndentionLevel()
let inputs = instr.inputs.map(lift).joined(separator: ", ")
if op.numOutputs > 0 {
w.emit("\(output()) <- WasmEndBlock \(inputs)")
} else {
w.emit("WasmEndBlock \(inputs)")
}
case .wasmBeginLoop(let op):
let inputs = instr.inputs.map(lift).joined(separator: ", ")
w.emit("WasmBeginLoop (\(op.signature)) [\(inputs)] -> L:\(instr.innerOutput(0)) [\(liftCallArguments(instr.innerOutputs(1...)))]")
w.increaseIndentionLevel()
case .wasmEndLoop(let op):
w.decreaseIndentionLevel()
let inputs = instr.inputs.map(lift).joined(separator: ", ")
if op.numOutputs > 0 {
w.emit("\(output()) <- WasmEndLoop \(inputs)")
} else {
w.emit("WasmEndLoop \(inputs)")
}
case .wasmBeginTry(let op):
let inputs = instr.inputs.map(lift).joined(separator: ", ")
w.emit("WasmBeginTry (\(op.signature)) [\(inputs)] -> L:\(instr.innerOutput(0)) [\(liftCallArguments(instr.innerOutputs(1...)))]")