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cancel unnecessary constructors #1185

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merged 4 commits into from
Oct 4, 2024
Merged

cancel unnecessary constructors #1185

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67740aa
cancel constructors
Hecate2 Sep 30, 2024
f491d95
Merge branch 'master' of github.com:neo-project/neo-devpack-dotnet in…
Hecate2 Oct 2, 2024
6129645
Merge branch 'master' into cancel-constructor
vncoelho Oct 3, 2024
aa75ba3
Merge branch 'master' into cancel-constructor
shargon Oct 4, 2024
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2 changes: 1 addition & 1 deletion src/Neo.Compiler.CSharp/CompilationEngine/CompilationContext.cs
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Expand Up @@ -485,7 +485,7 @@ private void ProcessMethod(SemanticModel model, IMethodSymbol symbol, bool expor
}

MethodConvert convert = ConvertMethod(model, symbol);
if (export && !symbol.IsStatic)
if (export && MethodConvert.NeedInstanceConstructor(symbol))
{
MethodConvert forward = new(this, symbol);
forward.ConvertForward(model, convert);
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4 changes: 2 additions & 2 deletions src/Neo.Compiler.CSharp/CompilationEngine/CompilationEngine.cs
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Expand Up @@ -34,7 +34,7 @@ public class CompilationEngine(CompilationOptions options)
internal CompilationOptions Options { get; private set; } = options;
private static readonly MetadataReference[] CommonReferences;
private static readonly Dictionary<string, MetadataReference> MetaReferences = [];
private static readonly Regex s_pattern = new(@"^(Neo\.SmartContract\.Framework\.SmartContract|SmartContract\.Framework\.SmartContract|Framework\.SmartContract|SmartContract)$");
internal static readonly Regex s_pattern = new(@"^(Neo\.SmartContract\.Framework\.SmartContract|SmartContract\.Framework\.SmartContract|Framework\.SmartContract|SmartContract|Neo\.SmartContract\.Framework\.Nep17Token|Neo\.SmartContract\.Framework\.TokenContract|Neo.SmartContract.Framework.Nep11Token<.*>)$");
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Maybe we should try to remove this regex

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@Hecate2 this is needed? it should check the hierarchy

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  static bool IsDerivedFromSmartContract(INamedTypeSymbol classSymbol, Regex pattern)
  {
      var baseType = classSymbol.BaseType;
      while (baseType != null)
      {
          if (pattern.IsMatch(baseType.ToString() ?? string.Empty))
          {
              return true;
          }
          baseType = baseType.BaseType;
      }
      return false;
  }

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IsDerivedFromSmartContract returns true even when a asmart contract is derived for many times. e.g.
class A: SmartContract
class B: A
class C: B
IsDerivedFromSmartContract returns true for B and C. But in B and C we may call base, or utilize the constructor of A.

internal readonly ConcurrentDictionary<INamedTypeSymbol, CompilationContext> Contexts = new(SymbolEqualityComparer.Default);

static CompilationEngine()
Expand Down Expand Up @@ -319,7 +319,7 @@ void Visit(INamedTypeSymbol classSymbol)
return sorted;
}

static bool IsDerivedFromSmartContract(INamedTypeSymbol classSymbol, Regex pattern)
internal static bool IsDerivedFromSmartContract(INamedTypeSymbol classSymbol, Regex pattern)
{
var baseType = classSymbol.BaseType;
while (baseType != null)
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2 changes: 1 addition & 1 deletion src/Neo.Compiler.CSharp/MethodConvert/Expression/AssignmentExpression.SimpleAssignment.cs
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Expand Up @@ -161,7 +161,7 @@ private void ConvertIdentifierNameAssignment(SemanticModel model, IdentifierName
}
else if (property.SetMethod != null)
{
if (!property.IsStatic) AddInstruction(OpCode.LDARG0);
if (NeedInstanceConstructor(property.SetMethod)) AddInstruction(OpCode.LDARG0);
CallMethodWithConvention(model, property.SetMethod, CallingConvention.Cdecl);
}
else
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2 changes: 1 addition & 1 deletion src/Neo.Compiler.CSharp/MethodConvert/Expression/IdentifierNameExpression.cs
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Expand Up @@ -81,7 +81,7 @@ private void ConvertIdentifierNameExpression(SemanticModel model, IdentifierName
if (!_internalInline) LdArgSlot(parameter);
break;
case IPropertySymbol property:
if (!property.IsStatic)
if (NeedInstanceConstructor(property.GetMethod!))
AddInstruction(OpCode.LDARG0);
CallMethodWithConvention(model, property.GetMethod!);
break;
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4 changes: 2 additions & 2 deletions src/Neo.Compiler.CSharp/MethodConvert/Helpers/CallHelpers.cs
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Expand Up @@ -120,7 +120,7 @@ private void CallMethodWithConvention(SemanticModel model, IMethodSymbol symbol,

var (convert, methodCallingConvention) = GetMethodConvertAndCallingConvention(model, symbol);

int pc = symbol.Parameters.Length + (symbol.IsStatic ? 0 : 1);
int pc = symbol.Parameters.Length + (!NeedInstanceConstructor(symbol) ? 0 : 1);
if (pc > 1 && methodCallingConvention != callingConvention)
ReverseStackItems(pc);

Expand Down Expand Up @@ -255,7 +255,7 @@ private void HandleConstructorDuplication(bool instanceOnStack, CallingConventio
private void HandleInstanceExpression(SemanticModel model, IMethodSymbol symbol, ExpressionSyntax? instanceExpression,
CallingConvention methodCallingConvention, bool beforeArguments)
{
if (symbol.IsStatic) return;
if (!NeedInstanceConstructor(symbol)) return;

bool shouldConvert = beforeArguments ? (methodCallingConvention != CallingConvention.Cdecl)
: (methodCallingConvention == CallingConvention.Cdecl);
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2 changes: 1 addition & 1 deletion src/Neo.Compiler.CSharp/MethodConvert/Helpers/ConvertHelpers.cs
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Expand Up @@ -91,7 +91,7 @@ private void InsertInitializationInstructions()
if (!_initSlot) return;
byte pc = (byte)_parameters.Count;
byte lc = (byte)_localsCount;
if (IsInstanceMethod(Symbol)) pc++;
if (NeedInstanceConstructor(Symbol)) pc++;
// Only add INITSLOT if we have local variables or parameters
if (pc > 0 || lc > 0)
{
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11 changes: 7 additions & 4 deletions src/Neo.Compiler.CSharp/MethodConvert/PropertyConvert.cs
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Expand Up @@ -61,6 +61,8 @@ private void ConvertFieldBackedProperty(IPropertySymbol property)
}
else
{
if (!NeedInstanceConstructor(Symbol))
return;
fields = fields.Where(p => !p.IsStatic).ToArray();
int backingFieldIndex = Array.FindIndex(fields, p => SymbolEqualityComparer.Default.Equals(p.AssociatedSymbol, property));
switch (Symbol.MethodKind)
Expand Down Expand Up @@ -130,7 +132,7 @@ private void ConvertStorageBackedProperty(IPropertySymbol property, AttributeDat
// Ensure that no object was sent
Jump(OpCode.JMPIFNOT_L, endTarget);
}
else
else if (NeedInstanceConstructor(Symbol))
{
// Check class
Jump(OpCode.JMPIF_L, endTarget);
Expand Down Expand Up @@ -181,15 +183,16 @@ private void ConvertStorageBackedProperty(IPropertySymbol property, AttributeDat
CallContractMethod(NativeContract.StdLib.Hash, "deserialize", 1, true);
break;
}
AddInstruction(OpCode.DUP);
if (Symbol.IsStatic)
{
AddInstruction(OpCode.DUP);
IFieldSymbol backingField = Array.Find(fields, p => SymbolEqualityComparer.Default.Equals(p.AssociatedSymbol, property))!;
byte backingFieldIndex = _context.AddStaticField(backingField);
AccessSlot(OpCode.STSFLD, backingFieldIndex);
}
else
else if (NeedInstanceConstructor(Symbol))
{
AddInstruction(OpCode.DUP);
fields = fields.Where(p => !p.IsStatic).ToArray();
int backingFieldIndex = Array.FindIndex(fields, p => SymbolEqualityComparer.Default.Equals(p.AssociatedSymbol, property));
AccessSlot(OpCode.LDARG, 0);
Expand All @@ -201,7 +204,7 @@ private void ConvertStorageBackedProperty(IPropertySymbol property, AttributeDat
}
else
{
if (Symbol.IsStatic)
if (Symbol.IsStatic || !NeedInstanceConstructor(Symbol))
AccessSlot(OpCode.LDARG, 0);
else
AccessSlot(OpCode.LDARG, 1);
Expand Down
40 changes: 37 additions & 3 deletions src/Neo.Compiler.CSharp/MethodConvert/SourceConvert.cs
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Expand Up @@ -12,6 +12,7 @@
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Neo.VM;
using System.Linq;

namespace Neo.Compiler;

Expand All @@ -24,7 +25,7 @@ private void ConvertSource(SemanticModel model)
{
IParameterSymbol parameter = Symbol.Parameters[i].OriginalDefinition;
byte index = i;
if (IsInstanceMethod(Symbol)) index++;
if (NeedInstanceConstructor(Symbol)) index++;
_parameters.Add(parameter, index);

if (parameter.RefKind == RefKind.Out)
Expand Down Expand Up @@ -139,6 +140,39 @@ private static bool IsExpressionReturningValue(SemanticModel semanticModel, Meth
return false;
}

private bool IsInstanceMethod(IMethodSymbol symbol) => !symbol.IsStatic && symbol.MethodKind != MethodKind.AnonymousFunction;

/// <summary>
/// non-static methods needs constructors to be executed
/// But non-static method in smart contract classes without explicit constructor
/// does not constructors
/// Cases we need instance constructors:
/// 1. non-static smart contract with explicit instance constructor in itself
/// 2. non-static ordinary method, with explicit instance constructor in itself or its base classes
/// </summary>
/// <param name="symbol">A method in class</param>
/// <returns></returns>
internal static bool NeedInstanceConstructor(IMethodSymbol symbol)
{
if (symbol.IsStatic || symbol.MethodKind == MethodKind.AnonymousFunction)
return false;
INamedTypeSymbol? containingClass = symbol.ContainingType;
if (containingClass == null) return false;
// non-static methods in class
if ((symbol.MethodKind == MethodKind.Constructor || symbol.MethodKind == MethodKind.SharedConstructor)
&& !CompilationEngine.IsDerivedFromSmartContract(containingClass, CompilationEngine.s_pattern))
// is constructor, and is not smart contract
// typically seen in framework methods
return true;
// is smart contract, or is normal non-static method (whether contract or not)
if (containingClass?.Constructors
.FirstOrDefault(p => p.Parameters.Length == 0 && !p.IsStatic)?
.DeclaringSyntaxReferences.Length == 0)
// No explicit non-static constructor in class
{
if (CompilationEngine.s_pattern.IsMatch(containingClass.BaseType?.ToString() ?? string.Empty))
// class itself is directly inheriting smart contract; cannot have more base classes
return false;
}
// has explicit constructor
return true;
}
}
4 changes: 2 additions & 2 deletions tests/Neo.Compiler.CSharp.UnitTests/TestingArtifacts/Contract_Abort.cs
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Expand Up @@ -10,12 +10,12 @@ public abstract class Contract_Abort(Neo.SmartContract.Testing.SmartContractInit
{
#region Compiled data

public static Neo.SmartContract.Manifest.ContractManifest Manifest => Neo.SmartContract.Manifest.ContractManifest.Parse(@"{""name"":""Contract_Abort"",""groups"":[],""features"":{},""supportedstandards"":[],""abi"":{""methods"":[{""name"":""testAbort"",""parameters"":[],""returntype"":""Integer"",""offset"":148,""safe"":false},{""name"":""testAbortMsg"",""parameters"":[],""returntype"":""Integer"",""offset"":160,""safe"":false},{""name"":""testAbortInFunction"",""parameters"":[{""name"":""abortMsg"",""type"":""Boolean""}],""returntype"":""Integer"",""offset"":172,""safe"":false},{""name"":""testAbortInTry"",""parameters"":[{""name"":""abortMsg"",""type"":""Boolean""}],""returntype"":""Integer"",""offset"":184,""safe"":false},{""name"":""testAbortInCatch"",""parameters"":[{""name"":""abortMsg"",""type"":""Boolean""}],""returntype"":""Integer"",""offset"":196,""safe"":false},{""name"":""testAbortInFinally"",""parameters"":[{""name"":""abortMsg"",""type"":""Boolean""}],""returntype"":""Integer"",""offset"":208,""safe"":false}],""events"":[]},""permissions"":[],""trusts"":[],""extra"":{""nef"":{""optimization"":""All""}}}");
public static Neo.SmartContract.Manifest.ContractManifest Manifest => Neo.SmartContract.Manifest.ContractManifest.Parse(@"{""name"":""Contract_Abort"",""groups"":[],""features"":{},""supportedstandards"":[],""abi"":{""methods"":[{""name"":""testAbort"",""parameters"":[],""returntype"":""Integer"",""offset"":0,""safe"":false},{""name"":""testAbortMsg"",""parameters"":[],""returntype"":""Integer"",""offset"":6,""safe"":false},{""name"":""testAbortInFunction"",""parameters"":[{""name"":""abortMsg"",""type"":""Boolean""}],""returntype"":""Integer"",""offset"":23,""safe"":false},{""name"":""testAbortInTry"",""parameters"":[{""name"":""abortMsg"",""type"":""Boolean""}],""returntype"":""Integer"",""offset"":35,""safe"":false},{""name"":""testAbortInCatch"",""parameters"":[{""name"":""abortMsg"",""type"":""Boolean""}],""returntype"":""Integer"",""offset"":60,""safe"":false},{""name"":""testAbortInFinally"",""parameters"":[{""name"":""abortMsg"",""type"":""Boolean""}],""returntype"":""Integer"",""offset"":96,""safe"":false}],""events"":[]},""permissions"":[],""trusts"":[],""extra"":{""nef"":{""optimization"":""All""}}}");

/// <summary>
/// Optimization: "All"
/// </summary>
public static Neo.SmartContract.NefFile Nef => Neo.IO.Helper.AsSerializable<Neo.SmartContract.NefFile>(Convert.FromBase64String(@"TkVGM1Rlc3RpbmdFbmdpbmUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAANpXAQEQcDhXAAF4NANAVwABQFcBARBwDAlBQk9SVCBNU0fgVwECEHB5JgV4NOZ4NNJXAgIQcDsMEXkmBXg01Xg0wXERcD0FEnA/aEBXAgIQcDsRIRFwDAlleGNlcHRpb246cXkmCHg1q////3g1lP///xJwP1cCAhBwOwcMEXA9AHEScD0AeSYIeDWI////eDVx////wko1cP///yNl////wko1ZP///yNq////wko1WP///yNv////wko1TP///yNx////wko1QP///yOA////wko1NP///yKdQCgI690="));
public static Neo.SmartContract.NefFile Nef => Neo.IO.Helper.AsSerializable<Neo.SmartContract.NefFile>(Convert.FromBase64String(@"TkVGM1Rlc3RpbmdFbmdpbmUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH9XAQAQcDhXAQAQcAwJQUJPUlQgTVNH4FcBARBweCYENOc031cCARBwOwoPeCYENNg00HERcD0FEnA/aEBXAgEQcDsRHBFwDAlleGNlcHRpb246cXgmBDSwNaj///8ScD9XAgEQcDsHDBFwPQBxEnA9AHgmBzWS////NYf///9Auddq9Q=="));

#endregion

Expand Down
4 changes: 2 additions & 2 deletions tests/Neo.Compiler.CSharp.UnitTests/TestingArtifacts/Contract_Assert.cs
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Expand Up @@ -10,12 +10,12 @@ public abstract class Contract_Assert(Neo.SmartContract.Testing.SmartContractIni
{
#region Compiled data

public static Neo.SmartContract.Manifest.ContractManifest Manifest => Neo.SmartContract.Manifest.ContractManifest.Parse(@"{""name"":""Contract_Assert"",""groups"":[],""features"":{},""supportedstandards"":[],""abi"":{""methods"":[{""name"":""testAssertFalse"",""parameters"":[],""returntype"":""Integer"",""offset"":121,""safe"":false},{""name"":""testAssertInFunction"",""parameters"":[],""returntype"":""Integer"",""offset"":133,""safe"":false},{""name"":""testAssertInTry"",""parameters"":[],""returntype"":""Integer"",""offset"":145,""safe"":false},{""name"":""testAssertInCatch"",""parameters"":[],""returntype"":""Integer"",""offset"":157,""safe"":false},{""name"":""testAssertInFinally"",""parameters"":[],""returntype"":""Integer"",""offset"":166,""safe"":false}],""events"":[]},""permissions"":[],""trusts"":[],""extra"":{""nef"":{""optimization"":""All""}}}");
public static Neo.SmartContract.Manifest.ContractManifest Manifest => Neo.SmartContract.Manifest.ContractManifest.Parse(@"{""name"":""Contract_Assert"",""groups"":[],""features"":{},""supportedstandards"":[],""abi"":{""methods"":[{""name"":""testAssertFalse"",""parameters"":[],""returntype"":""Integer"",""offset"":0,""safe"":false},{""name"":""testAssertInFunction"",""parameters"":[],""returntype"":""Integer"",""offset"":16,""safe"":false},{""name"":""testAssertInTry"",""parameters"":[],""returntype"":""Integer"",""offset"":28,""safe"":false},{""name"":""testAssertInCatch"",""parameters"":[],""returntype"":""Integer"",""offset"":51,""safe"":false},{""name"":""testAssertInFinally"",""parameters"":[],""returntype"":""Integer"",""offset"":84,""safe"":false}],""events"":[]},""permissions"":[],""trusts"":[],""extra"":{""nef"":{""optimization"":""All""}}}");

/// <summary>
/// Optimization: "All"
/// </summary>
public static Neo.SmartContract.NefFile Nef => Neo.IO.Helper.AsSerializable<Neo.SmartContract.NefFile>(Convert.FromBase64String(@"TkVGM1Rlc3RpbmdFbmdpbmUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAALBXAQEQcAg5EXAJOQBkcGhAVwABeDQDQFcAAUBXAQEQcHg033ARcGhAVwIBEHA7CQ54NM9wPQpxEXA9BRJwP2hAVwIBEHA7ERgRcAwJZXhjZXB0aW9uOnF4NKhwPQUScD9oQFcCARBwOwcMEXA9AHEScD0AeDWM////wko1lf///yOA////wko1if///yOP////wko1ff///yOQ////wko1cf///yKcwko1aP///yK1QF5bPYA="));
public static Neo.SmartContract.NefFile Nef => Neo.IO.Helper.AsSerializable<Neo.SmartContract.NefFile>(Convert.FromBase64String(@"TkVGM1Rlc3RpbmdFbmdpbmUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGtXAQAQcAg5EXAJOQBkcGhAVwEAEHA063ARcGhAVwIAEHA7CA003HA9CnERcD0FEnA/aEBXAgAQcDsRFxFwDAlleGNlcHRpb246cTS2cD0FEnA/aEBXAgAQcDsHDBFwPQBxEnA9ADWb////QJ1a8Js="));

#endregion

Expand Down
4 changes: 2 additions & 2 deletions tests/Neo.Compiler.CSharp.UnitTests/TestingArtifacts/Contract_Delegate.cs
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Expand Up @@ -10,12 +10,12 @@ public abstract class Contract_Delegate(Neo.SmartContract.Testing.SmartContractI
{
#region Compiled data

public static Neo.SmartContract.Manifest.ContractManifest Manifest => Neo.SmartContract.Manifest.ContractManifest.Parse(@"{""name"":""Contract_Delegate"",""groups"":[],""features"":{},""supportedstandards"":[],""abi"":{""methods"":[{""name"":""sumFunc"",""parameters"":[{""name"":""a"",""type"":""Integer""},{""name"":""b"",""type"":""Integer""}],""returntype"":""Integer"",""offset"":0,""safe"":false},{""name"":""testDelegate"",""parameters"":[],""returntype"":""Void"",""offset"":163,""safe"":false}],""events"":[]},""permissions"":[{""contract"":""0xacce6fd80d44e1796aa0c2c625e9e4e0ce39efc0"",""methods"":[""itoa""]}],""trusts"":[],""extra"":{""nef"":{""optimization"":""All""}}}");
public static Neo.SmartContract.Manifest.ContractManifest Manifest => Neo.SmartContract.Manifest.ContractManifest.Parse(@"{""name"":""Contract_Delegate"",""groups"":[],""features"":{},""supportedstandards"":[],""abi"":{""methods"":[{""name"":""sumFunc"",""parameters"":[{""name"":""a"",""type"":""Integer""},{""name"":""b"",""type"":""Integer""}],""returntype"":""Integer"",""offset"":0,""safe"":false},{""name"":""testDelegate"",""parameters"":[],""returntype"":""Void"",""offset"":118,""safe"":false}],""events"":[]},""permissions"":[{""contract"":""0xacce6fd80d44e1796aa0c2c625e9e4e0ce39efc0"",""methods"":[""itoa""]}],""trusts"":[],""extra"":{""nef"":{""optimization"":""All""}}}");

/// <summary>
/// Optimization: "All"
/// </summary>
public static Neo.SmartContract.NefFile Nef => Neo.IO.Helper.AsSerializable<Neo.SmartContract.NefFile>(Convert.FromBase64String(@"TkVGM1Rlc3RpbmdFbmdpbmUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHA7znO4OTpJcbCoGp54UQN2G/OrARpdG9hAQABDwAAqlcAAnl4CgcAAAA2QFcAAnh5nkoCAAAAgC4EIgpKAv///38yHgP/////AAAAAJFKAv///38yDAMAAAAAAQAAAJ9AVwACeHmeSgIAAACALgQiCkoC////fzIeA/////8AAAAAkUoC////fzIMAwAAAAABAAAAn0BXAgEKyP///3AWFWg2cQwFU3VtOiBpNwAAi9soQc/nR5ZAVwABeDQDQFcAAUDCSjTzIs9AJ9ukPQ=="));
public static Neo.SmartContract.NefFile Nef => Neo.IO.Helper.AsSerializable<Neo.SmartContract.NefFile>(Convert.FromBase64String(@"TkVGM1Rlc3RpbmdFbmdpbmUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHA7znO4OTpJcbCoGp54UQN2G/OrARpdG9hAQABDwAAmFcAAnl4CgcAAAA2QFcAAnh5nkoCAAAAgC4EIgpKAv///38yHgP/////AAAAAJFKAv///38yDAMAAAAAAQAAAJ9AVwACeHmeSgIAAACALgQiCkoC////fzIeA/////8AAAAAkUoC////fzIMAwAAAAABAAAAn0BXAgAKyP///3AWFWg2cQwFU3VtOiBpNwAAi9soQc/nR5ZA1O3dOg=="));

#endregion

Expand Down
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