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remove dependencies on contracts

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-10-20 10:24:36 -07:00
parent 12fc670839
commit 3d37060fa9
72 changed files with 734 additions and 1232 deletions
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52
src/api/dotnet/Expr.cs
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@ -17,15 +17,16 @@ Notes:
--*/
using System.Diagnostics;
using System;
using System.Diagnostics.Contracts;
using System.Linq;
namespace Microsoft.Z3
{
/// <summary>
/// Expressions are terms.
/// </summary>
[ContractVerification(true)]
public class Expr : AST
{
/// <summary>
@ -35,7 +36,6 @@ namespace Microsoft.Z3
/// <seealso cref="Context.SimplifyHelp"/>
public Expr Simplify(Params p = null)
{
Contract.Ensures(Contract.Result<Expr>() != null);
if (p == null)
return Expr.Create(Context, Native.Z3_simplify(Context.nCtx, NativeObject));
@ -50,7 +50,6 @@ namespace Microsoft.Z3
{
get
{
Contract.Ensures(Contract.Result<FuncDecl>() != null);
return new FuncDecl(Context, Native.Z3_get_app_decl(Context.nCtx, NativeObject));
}
}
@ -79,7 +78,6 @@ namespace Microsoft.Z3
{
get
{
Contract.Ensures(Contract.Result<Expr[]>() != null);
uint n = NumArgs;
Expr[] res = new Expr[n];
@ -94,7 +92,6 @@ namespace Microsoft.Z3
/// </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));
}
@ -104,8 +101,8 @@ namespace Microsoft.Z3
/// </summary>
public void Update(Expr[] args)
{
Contract.Requires(args != null);
Contract.Requires(Contract.ForAll(args, a => a != null));
Debug.Assert(args != null);
Debug.Assert(args.All(a => a != null));
Context.CheckContextMatch<Expr>(args);
if (IsApp && args.Length != NumArgs)
@ -123,11 +120,10 @@ namespace Microsoft.Z3
/// </remarks>
public Expr Substitute(Expr[] from, Expr[] to)
{
Contract.Requires(from != null);
Contract.Requires(to != null);
Contract.Requires(Contract.ForAll(from, f => f != null));
Contract.Requires(Contract.ForAll(to, t => t != null));
Contract.Ensures(Contract.Result<Expr>() != null);
Debug.Assert(from != null);
Debug.Assert(to != null);
Debug.Assert(from.All(f => f != null));
Debug.Assert(to.All(t => t != null));
Context.CheckContextMatch<Expr>(from);
Context.CheckContextMatch<Expr>(to);
@ -142,9 +138,8 @@ namespace Microsoft.Z3
/// <seealso cref="Substitute(Expr[],Expr[])"/>
public Expr Substitute(Expr from, Expr to)
{
Contract.Requires(from != null);
Contract.Requires(to != null);
Contract.Ensures(Contract.Result<Expr>() != null);
Debug.Assert(from != null);
Debug.Assert(to != null);
return Substitute(new Expr[] { from }, new Expr[] { to });
}
@ -157,9 +152,8 @@ namespace Microsoft.Z3
/// </remarks>
public Expr SubstituteVars(Expr[] to)
{
Contract.Requires(to != null);
Contract.Requires(Contract.ForAll(to, t => t != null));
Contract.Ensures(Contract.Result<Expr>() != null);
Debug.Assert(to != null);
Debug.Assert(to.All(t => t != null));
Context.CheckContextMatch<Expr>(to);
return Expr.Create(Context, Native.Z3_substitute_vars(Context.nCtx, NativeObject, (uint)to.Length, Expr.ArrayToNative(to)));
@ -207,7 +201,6 @@ namespace Microsoft.Z3
{
get
{
Contract.Ensures(Contract.Result<Sort>() != null);
return Sort.Create(Context, Native.Z3_get_sort(Context.nCtx, NativeObject));
}
}
@ -332,7 +325,7 @@ namespace Microsoft.Z3
/// <summary>
/// Retrieve bound of at-most
/// </summary>
public uint AtMostBound { get { Contract.Requires(IsAtMost); return (uint)FuncDecl.Parameters[0].Int; } }
public uint AtMostBound { get { Debug.Assert(IsAtMost); return (uint)FuncDecl.Parameters[0].Int; } }
/// <summary>
/// Indicates whether the term is at-least
@ -342,7 +335,7 @@ namespace Microsoft.Z3
/// <summary>
/// Retrieve bound of at-least
/// </summary>
public uint AtLeastBound { get { Contract.Requires(IsAtLeast); return (uint)FuncDecl.Parameters[0].Int; } }
public uint AtLeastBound { get { Debug.Assert(IsAtLeast); return (uint)FuncDecl.Parameters[0].Int; } }
/// <summary>
/// Indicates whether the term is pbeq
@ -1816,8 +1809,6 @@ namespace Microsoft.Z3
if (!IsVar)
throw new Z3Exception("Term is not a bound variable.");
Contract.EndContractBlock();
return Native.Z3_get_index_value(Context.nCtx, NativeObject);
}
}
@ -1827,10 +1818,9 @@ namespace Microsoft.Z3
/// <summary>
/// Constructor for Expr
/// </summary>
internal protected Expr(Context ctx, IntPtr obj) : base(ctx, obj) { Contract.Requires(ctx != null); }
internal protected Expr(Context ctx, IntPtr obj) : base(ctx, obj) { Debug.Assert(ctx != null); }
#if DEBUG
[Pure]
internal override void CheckNativeObject(IntPtr obj)
{
if (Native.Z3_is_app(Context.nCtx, obj) == 0 &&
@ -1841,12 +1831,10 @@ namespace Microsoft.Z3
}
#endif
[Pure]
internal static Expr Create(Context ctx, FuncDecl f, params Expr[] arguments)
{
Contract.Requires(ctx != null);
Contract.Requires(f != null);
Contract.Ensures(Contract.Result<Expr>() != null);
Debug.Assert(ctx != null);
Debug.Assert(f != null);
IntPtr obj = Native.Z3_mk_app(ctx.nCtx, f.NativeObject,
AST.ArrayLength(arguments),
@ -1854,11 +1842,9 @@ namespace Microsoft.Z3
return Create(ctx, obj);
}
[Pure]
new internal static Expr Create(Context ctx, IntPtr obj)
{
Contract.Requires(ctx != null);
Contract.Ensures(Contract.Result<Expr>() != null);
Debug.Assert(ctx != null);
Z3_ast_kind k = (Z3_ast_kind)Native.Z3_get_ast_kind(ctx.nCtx, obj);
if (k == Z3_ast_kind.Z3_QUANTIFIER_AST)