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expr utilities for pb

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-08-02 10:41:07 -07:00
parent 39333273a5
commit 7bd4a313dd
2 changed files with 45 additions and 0 deletions
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44
src/api/dotnet/Expr.cs
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@ -89,6 +89,15 @@ namespace Microsoft.Z3
}
}
/// <summary>
/// The i'th argument of the expression.
/// </summary>
public Expr Arg(uint i)
{
Contract.Ensures(Contract.Result<Expr>() != null);
return Expr.Create(Context, Native.Z3_get_app_arg(Context.nCtx, NativeObject, i));
}
/// <summary>
/// Update the arguments of the expression using the arguments <paramref name="args"/>
/// The number of new arguments should coincide with the current number of arguments.
@ -315,6 +324,41 @@ namespace Microsoft.Z3
/// </summary>
public bool IsImplies { get { return IsApp && FuncDecl.DeclKind == Z3_decl_kind.Z3_OP_IMPLIES; } }
/// <summary>
/// Indicates whether the term is at-most
/// </summary>
public bool IsAtMost { get { return IsApp && FuncDecl.DeclKind == Z3_decl_kind.Z3_OP_PB_AT_MOST; } }
/// <summary>
/// Retrieve bound of at-most
/// </summary>
public uint AtMostBound { get { Contract.Requires(IsAtMost); return (uint)FuncDecl.Parameters[0].Int; } }
/// <summary>
/// Indicates whether the term is at-least
/// </summary>
public bool IsAtLeast { get { return IsApp && FuncDecl.DeclKind == Z3_decl_kind.Z3_OP_PB_AT_LEAST; } }
/// <summary>
/// Retrieve bound of at-least
/// </summary>
public uint AtLeastBound { get { Contract.Requires(IsAtLeast); return (uint)FuncDecl.Parameters[0].Int; } }
/// <summary>
/// Indicates whether the term is pbeq
/// </summary>
public bool IsPbEq { get { return IsApp && FuncDecl.DeclKind == Z3_decl_kind.Z3_OP_PB_EQ; } }
/// <summary>
/// Indicates whether the term is pble
/// </summary>
public bool IsPbLe { get { return IsApp && FuncDecl.DeclKind == Z3_decl_kind.Z3_OP_PB_LE; } }
/// <summary>
/// Indicates whether the term is pbge
/// </summary>
public bool IsPbGe { get { return IsApp && FuncDecl.DeclKind == Z3_decl_kind.Z3_OP_PB_GE; } }
#endregion
#region Arithmetic Terms