WasmBox
Released
Wasm/Interpret/DefaultInstructionInterpreter.cs
using System;
using System.Collections.Generic;
using WasmBox.Wasm.Instructions;
namespace WasmBox.Wasm.Interpret {
/// <summary>
/// The default instruction interpreter implementation.
/// </summary>
public sealed class DefaultInstructionInterpreter : InstructionInterpreter {
/// <summary>
/// Creates an instruction interpreter with no operator implementations.
/// </summary>
public DefaultInstructionInterpreter() {
this.operatorImpls =
new Dictionary<Operator, Action<Instruction, InterpreterContext>>();
}
/// <summary>
/// Creates an instruction interpreter that clones the given interpreter's
/// operator implementations.
/// </summary>
public DefaultInstructionInterpreter(DefaultInstructionInterpreter other) {
this.operatorImpls =
new Dictionary<Operator, Action<Instruction, InterpreterContext>>(
other.operatorImpls);
}
/// <summary>
/// A mapping of operators to their implementations.
/// </summary>
private Dictionary<Operator, Action<Instruction, InterpreterContext>> operatorImpls;
/// <summary>
/// Implements the given operator as the specified action.
/// </summary>
/// <param name="op">The operator to implement.</param>
/// <param name="implementation">The action that implements the operator.</param>
public void ImplementOperator(
Operator op,
Action<Instruction, InterpreterContext> implementation) {
operatorImpls[op] = implementation;
}
/// <summary>
/// Checks if this instruction interpreter implements the given operator.
/// </summary>
/// <param name="op">A WebAssembly operator.</param>
/// <returns><c>true</c> if the given operator is implemented by this interpreter; otherwise, <c>false</c>.</returns>
public bool IsImplemented(Operator op) => operatorImpls.ContainsKey(op);
/// <summary>
/// Interprets the given instruction within the specified context.
/// </summary>
/// <param name="value">The instruction to interpret.</param>
/// <param name="context">The interpreter context.</param>
public override void Interpret(Instruction value, InterpreterContext context) {
if (context.HasReturned) {
return;
}
Action<Instruction, InterpreterContext> impl;
if (operatorImpls.TryGetValue(value.Op, out impl)) {
impl(value, context);
}
else {
throw new WasmException("Operator not implemented by interpreter: " + value.Op.ToString());
}
}
/// <summary>
/// The default instruction interpreter with the default list of operator implementations.
/// Please don't implement any additional operators in this interpreter instance.
/// </summary>
public static readonly DefaultInstructionInterpreter Default;
static DefaultInstructionInterpreter() {
Default = new DefaultInstructionInterpreter();
Default.ImplementOperator( Operators.Unreachable, OperatorImpls.Unreachable );
Default.ImplementOperator( Operators.Nop, OperatorImpls.Nop );
Default.ImplementOperator( Operators.Block, OperatorImpls.Block );
Default.ImplementOperator( Operators.Loop, OperatorImpls.Loop );
Default.ImplementOperator( Operators.If, OperatorImpls.If );
Default.ImplementOperator( Operators.Br, OperatorImpls.Br );
Default.ImplementOperator( Operators.BrIf, OperatorImpls.BrIf );
Default.ImplementOperator( Operators.BrTable, OperatorImpls.BrTable );
Default.ImplementOperator( Operators.Return, OperatorImpls.Return );
Default.ImplementOperator( Operators.Drop, OperatorImpls.Drop );
Default.ImplementOperator( Operators.Select, OperatorImpls.Select );
Default.ImplementOperator( Operators.Call, OperatorImpls.Call );
Default.ImplementOperator( Operators.CallIndirect, OperatorImpls.CallIndirect );
Default.ImplementOperator( Operators.GetLocal, OperatorImpls.GetLocal );
Default.ImplementOperator( Operators.SetLocal, OperatorImpls.SetLocal );
Default.ImplementOperator( Operators.TeeLocal, OperatorImpls.TeeLocal );
Default.ImplementOperator( Operators.GetGlobal, OperatorImpls.GetGlobal );
Default.ImplementOperator( Operators.SetGlobal, OperatorImpls.SetGlobal );
Default.ImplementOperator( Operators.Int32Load, OperatorImpls.Int32Load );
Default.ImplementOperator( Operators.Int64Load, OperatorImpls.Int64Load );
Default.ImplementOperator( Operators.Int32Load8S, OperatorImpls.Int32Load8S );
Default.ImplementOperator( Operators.Int32Load8U, OperatorImpls.Int32Load8U );
Default.ImplementOperator( Operators.Int32Load16S, OperatorImpls.Int32Load16S );
Default.ImplementOperator( Operators.Int32Load16U, OperatorImpls.Int32Load16U );
Default.ImplementOperator( Operators.Int64Load8S, OperatorImpls.Int64Load8S );
Default.ImplementOperator( Operators.Int64Load8U, OperatorImpls.Int64Load8U );
Default.ImplementOperator( Operators.Int64Load16S, OperatorImpls.Int64Load16S );
Default.ImplementOperator( Operators.Int64Load16U, OperatorImpls.Int64Load16U );
Default.ImplementOperator( Operators.Int64Load32S, OperatorImpls.Int64Load32S );
Default.ImplementOperator( Operators.Int64Load32U, OperatorImpls.Int64Load32U );
Default.ImplementOperator( Operators.Float32Load, OperatorImpls.Float32Load );
Default.ImplementOperator( Operators.Float64Load, OperatorImpls.Float64Load );
Default.ImplementOperator( Operators.Int32Store8, OperatorImpls.Int32Store8 );
Default.ImplementOperator( Operators.Int32Store16, OperatorImpls.Int32Store16 );
Default.ImplementOperator( Operators.Int32Store, OperatorImpls.Int32Store );
Default.ImplementOperator( Operators.Int64Store8, OperatorImpls.Int64Store8 );
Default.ImplementOperator( Operators.Int64Store16, OperatorImpls.Int64Store16 );
Default.ImplementOperator( Operators.Int64Store32, OperatorImpls.Int64Store32 );
Default.ImplementOperator( Operators.Int64Store, OperatorImpls.Int64Store );
Default.ImplementOperator( Operators.Float32Store, OperatorImpls.Float32Store );
Default.ImplementOperator( Operators.Float64Store, OperatorImpls.Float64Store );
Default.ImplementOperator( Operators.Int32Const, OperatorImpls.Int32Const );
Default.ImplementOperator( Operators.Int64Const, OperatorImpls.Int64Const );
Default.ImplementOperator( Operators.Float32Const, OperatorImpls.Float32Const );
Default.ImplementOperator( Operators.Float64Const, OperatorImpls.Float64Const );
Default.ImplementOperator( Operators.SizeMemory, OperatorImpls.SizeMemory );
Default.ImplementOperator( Operators.GrowMemory, OperatorImpls.GrowMemory );
Default.ImplementOperator( Operators.InitMemory, OperatorImpls.InitMemory );
Default.ImplementOperator( Operators.DropData, OperatorImpls.DropData );
Default.ImplementOperator( Operators.CopyMemory, OperatorImpls.CopyMemory );
Default.ImplementOperator( Operators.FillMemory, OperatorImpls.FillMemory );
Default.ImplementOperator( Operators.Int32Add, OperatorImpls.Int32Add );
Default.ImplementOperator( Operators.Int32And, OperatorImpls.Int32And );
Default.ImplementOperator( Operators.Int32Clz, OperatorImpls.Int32Clz );
Default.ImplementOperator( Operators.Int32Ctz, OperatorImpls.Int32Ctz );
Default.ImplementOperator( Operators.Int32DivS, OperatorImpls.Int32DivS );
Default.ImplementOperator( Operators.Int32DivU, OperatorImpls.Int32DivU );
Default.ImplementOperator( Operators.Int32Eq, OperatorImpls.Int32Eq );
Default.ImplementOperator( Operators.Int32Eqz, OperatorImpls.Int32Eqz );
Default.ImplementOperator( Operators.Int32GeS, OperatorImpls.Int32GeS );
Default.ImplementOperator( Operators.Int32GeU, OperatorImpls.Int32GeU );
Default.ImplementOperator( Operators.Int32GtS, OperatorImpls.Int32GtS );
Default.ImplementOperator( Operators.Int32GtU, OperatorImpls.Int32GtU );
Default.ImplementOperator( Operators.Int32LeS, OperatorImpls.Int32LeS );
Default.ImplementOperator( Operators.Int32LeU, OperatorImpls.Int32LeU );
Default.ImplementOperator( Operators.Int32LtS, OperatorImpls.Int32LtS );
Default.ImplementOperator( Operators.Int32LtU, OperatorImpls.Int32LtU );
Default.ImplementOperator( Operators.Int32Mul, OperatorImpls.Int32Mul );
Default.ImplementOperator( Operators.Int32Ne, OperatorImpls.Int32Ne );
Default.ImplementOperator( Operators.Int32Or, OperatorImpls.Int32Or );
Default.ImplementOperator( Operators.Int32Popcnt, OperatorImpls.Int32Popcnt );
Default.ImplementOperator( Operators.Int32ReinterpretFloat32, OperatorImpls.Int32ReinterpretFloat32 );
Default.ImplementOperator( Operators.Int32RemS, OperatorImpls.Int32RemS );
Default.ImplementOperator( Operators.Int32RemU, OperatorImpls.Int32RemU );
Default.ImplementOperator( Operators.Int32Rotl, OperatorImpls.Int32Rotl );
Default.ImplementOperator( Operators.Int32Rotr, OperatorImpls.Int32Rotr );
Default.ImplementOperator( Operators.Int32Shl, OperatorImpls.Int32Shl );
Default.ImplementOperator( Operators.Int32ShrS, OperatorImpls.Int32ShrS );
Default.ImplementOperator( Operators.Int32ShrU, OperatorImpls.Int32ShrU );
Default.ImplementOperator( Operators.Int32Sub, OperatorImpls.Int32Sub );
Default.ImplementOperator( Operators.Int32TruncSFloat32, OperatorImpls.Int32TruncSFloat32 );
Default.ImplementOperator( Operators.Int32TruncSFloat64, OperatorImpls.Int32TruncSFloat64 );
Default.ImplementOperator( Operators.Int32TruncUFloat32, OperatorImpls.Int32TruncUFloat32 );
Default.ImplementOperator( Operators.Int32TruncUFloat64, OperatorImpls.Int32TruncUFloat64 );
Default.ImplementOperator( Operators.Int32WrapInt64, OperatorImpls.Int32WrapInt64 );
Default.ImplementOperator( Operators.Int32Xor, OperatorImpls.Int32Xor );
Default.ImplementOperator( Operators.Int64Add, OperatorImpls.Int64Add );
Default.ImplementOperator( Operators.Int64And, OperatorImpls.Int64And );
Default.ImplementOperator( Operators.Int64Clz, OperatorImpls.Int64Clz );
Default.ImplementOperator( Operators.Int64Ctz, OperatorImpls.Int64Ctz );
Default.ImplementOperator( Operators.Int64DivS, OperatorImpls.Int64DivS );
Default.ImplementOperator( Operators.Int64DivU, OperatorImpls.Int64DivU );
Default.ImplementOperator( Operators.Int64Eq, OperatorImpls.Int64Eq );
Default.ImplementOperator( Operators.Int64Eqz, OperatorImpls.Int64Eqz );
Default.ImplementOperator( Operators.Int64ExtendSInt32, OperatorImpls.Int64ExtendSInt32 );
Default.ImplementOperator( Operators.Int64ExtendUInt32, OperatorImpls.Int64ExtendUInt32 );
Default.ImplementOperator( Operators.Int64GeS, OperatorImpls.Int64GeS );
Default.ImplementOperator( Operators.Int64GeU, OperatorImpls.Int64GeU );
Default.ImplementOperator( Operators.Int64GtS, OperatorImpls.Int64GtS );
Default.ImplementOperator( Operators.Int64GtU, OperatorImpls.Int64GtU );
Default.ImplementOperator( Operators.Int64LeS, OperatorImpls.Int64LeS );
Default.ImplementOperator( Operators.Int64LeU, OperatorImpls.Int64LeU );
Default.ImplementOperator( Operators.Int64LtS, OperatorImpls.Int64LtS );
Default.ImplementOperator( Operators.Int64LtU, OperatorImpls.Int64LtU );
Default.ImplementOperator( Operators.Int64Mul, OperatorImpls.Int64Mul );
Default.ImplementOperator( Operators.Int64Ne, OperatorImpls.Int64Ne );
Default.ImplementOperator( Operators.Int64Or, OperatorImpls.Int64Or );
Default.ImplementOperator( Operators.Int64Popcnt, OperatorImpls.Int64Popcnt );
Default.ImplementOperator( Operators.Int64ReinterpretFloat64, OperatorImpls.Int64ReinterpretFloat64 );
Default.ImplementOperator( Operators.Int64RemS, OperatorImpls.Int64RemS );
Default.ImplementOperator( Operators.Int64RemU, OperatorImpls.Int64RemU );
Default.ImplementOperator( Operators.Int64Rotl, OperatorImpls.Int64Rotl );
Default.ImplementOperator( Operators.Int64Rotr, OperatorImpls.Int64Rotr );
Default.ImplementOperator( Operators.Int64Shl, OperatorImpls.Int64Shl );
Default.ImplementOperator( Operators.Int64ShrS, OperatorImpls.Int64ShrS );
Default.ImplementOperator( Operators.Int64ShrU, OperatorImpls.Int64ShrU );
Default.ImplementOperator( Operators.Int64Sub, OperatorImpls.Int64Sub );
Default.ImplementOperator( Operators.Int64TruncSFloat32, OperatorImpls.Int64TruncSFloat32 );
Default.ImplementOperator( Operators.Int64TruncSFloat64, OperatorImpls.Int64TruncSFloat64 );
Default.ImplementOperator( Operators.Int64TruncUFloat32, OperatorImpls.Int64TruncUFloat32 );
Default.ImplementOperator( Operators.Int64TruncUFloat64, OperatorImpls.Int64TruncUFloat64 );
Default.ImplementOperator( Operators.Int64Xor, OperatorImpls.Int64Xor );
Default.ImplementOperator( Operators.Float32Abs, OperatorImpls.Float32Abs );
Default.ImplementOperator( Operators.Float32Add, OperatorImpls.Float32Add );
Default.ImplementOperator( Operators.Float32Ceil, OperatorImpls.Float32Ceil );
Default.ImplementOperator( Operators.Float32ConvertSInt32, OperatorImpls.Float32ConvertSInt32 );
Default.ImplementOperator( Operators.Float32ConvertSInt64, OperatorImpls.Float32ConvertSInt64 );
Default.ImplementOperator( Operators.Float32ConvertUInt32, OperatorImpls.Float32ConvertUInt32 );
Default.ImplementOperator( Operators.Float32ConvertUInt64, OperatorImpls.Float32ConvertUInt64 );
Default.ImplementOperator( Operators.Float32Copysign, OperatorImpls.Float32Copysign );
Default.ImplementOperator( Operators.Float32DemoteFloat64, OperatorImpls.Float32DemoteFloat64 );
Default.ImplementOperator( Operators.Float32Div, OperatorImpls.Float32Div );
Default.ImplementOperator( Operators.Float32Eq, OperatorImpls.Float32Eq );
Default.ImplementOperator( Operators.Float32Floor, OperatorImpls.Float32Floor );
Default.ImplementOperator( Operators.Float32Ge, OperatorImpls.Float32Ge );
Default.ImplementOperator( Operators.Float32Gt, OperatorImpls.Float32Gt );
Default.ImplementOperator( Operators.Float32Le, OperatorImpls.Float32Le );
Default.ImplementOperator( Operators.Float32Lt, OperatorImpls.Float32Lt );
Default.ImplementOperator( Operators.Float32Max, OperatorImpls.Float32Max );
Default.ImplementOperator( Operators.Float32Min, OperatorImpls.Float32Min );
Default.ImplementOperator( Operators.Float32Mul, OperatorImpls.Float32Mul );
Default.ImplementOperator( Operators.Float32Ne, OperatorImpls.Float32Ne );
Default.ImplementOperator( Operators.Float32Nearest, OperatorImpls.Float32Nearest );
Default.ImplementOperator( Operators.Float32Neg, OperatorImpls.Float32Neg );
Default.ImplementOperator( Operators.Float32ReinterpretInt32, OperatorImpls.Float32ReinterpretInt32 );
Default.ImplementOperator( Operators.Float32Sqrt, OperatorImpls.Float32Sqrt );
Default.ImplementOperator( Operators.Float32Sub, OperatorImpls.Float32Sub );
Default.ImplementOperator( Operators.Float32Trunc, OperatorImpls.Float32Trunc );
Default.ImplementOperator( Operators.Float64Abs, OperatorImpls.Float64Abs );
Default.ImplementOperator( Operators.Float64Add, OperatorImpls.Float64Add );
Default.ImplementOperator( Operators.Float64Ceil, OperatorImpls.Float64Ceil );
Default.ImplementOperator( Operators.Float64ConvertSInt32, OperatorImpls.Float64ConvertSInt32 );
Default.ImplementOperator( Operators.Float64ConvertSInt64, OperatorImpls.Float64ConvertSInt64 );
Default.ImplementOperator( Operators.Float64ConvertUInt32, OperatorImpls.Float64ConvertUInt32 );
Default.ImplementOperator( Operators.Float64ConvertUInt64, OperatorImpls.Float64ConvertUInt64 );
Default.ImplementOperator( Operators.Float64Copysign, OperatorImpls.Float64Copysign );
Default.ImplementOperator( Operators.Float64Div, OperatorImpls.Float64Div );
Default.ImplementOperator( Operators.Float64Eq, OperatorImpls.Float64Eq );
Default.ImplementOperator( Operators.Float64Floor, OperatorImpls.Float64Floor );
Default.ImplementOperator( Operators.Float64Ge, OperatorImpls.Float64Ge );
Default.ImplementOperator( Operators.Float64Gt, OperatorImpls.Float64Gt );
Default.ImplementOperator( Operators.Float64Le, OperatorImpls.Float64Le );
Default.ImplementOperator( Operators.Float64Lt, OperatorImpls.Float64Lt );
Default.ImplementOperator( Operators.Float64Max, OperatorImpls.Float64Max );
Default.ImplementOperator( Operators.Float64Min, OperatorImpls.Float64Min );
Default.ImplementOperator( Operators.Float64Mul, OperatorImpls.Float64Mul );
Default.ImplementOperator( Operators.Float64Ne, OperatorImpls.Float64Ne );
Default.ImplementOperator( Operators.Float64Nearest, OperatorImpls.Float64Nearest );
Default.ImplementOperator( Operators.Float64Neg, OperatorImpls.Float64Neg );
Default.ImplementOperator( Operators.Float64PromoteFloat32, OperatorImpls.Float64PromoteFloat32 );
Default.ImplementOperator( Operators.Float64ReinterpretInt64, OperatorImpls.Float64ReinterpretInt64 );
Default.ImplementOperator( Operators.Float64Sqrt, OperatorImpls.Float64Sqrt );
Default.ImplementOperator( Operators.Float64Sub, OperatorImpls.Float64Sub );
Default.ImplementOperator( Operators.Float64Trunc, OperatorImpls.Float64Trunc );
Default.ImplementOperator( Operators.Int32ExtendByteS, OperatorImpls.Int32ExtendByteS );
Default.ImplementOperator( Operators.Int32ExtendInt16S, OperatorImpls.Int32ExtendInt16S );
Default.ImplementOperator( Operators.Int64ExtendByteS, OperatorImpls.Int64ExtendByteS );
Default.ImplementOperator( Operators.Int64ExtendInt16S, OperatorImpls.Int64ExtendInt16S );
Default.ImplementOperator( Operators.Int64ExtendInt32S, OperatorImpls.Int64ExtendInt32S );
}
}
}