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//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (C) Lluis Sanchez Gual, 2004
//
#if !FULL_AOT_RUNTIME
using System;
using System.Reflection;
using System.Reflection.Emit;
namespace Mono.CodeGeneration
{
public abstract class CodeExpression: CodeItem
{
internal CodeVariableReference var;
public abstract Type GetResultType ();
public virtual void GenerateAsStatement (ILGenerator gen)
{
Generate (gen);
gen.Emit (OpCodes.Pop);
}
public CodeExpression CallToString ()
{
return new CodeMethodCall (this, "ToString");
}
public static CodeExpression AreEqual (CodeExpression e1, CodeExpression e2)
{
return new CodeEquals (e1, e2);
}
public static CodeExpression AreNotEqual (CodeExpression e1, CodeExpression e2)
{
return new CodeNotEquals (e1, e2);
}
public static CodeExpression IsGreaterThan (CodeExpression e1, CodeExpression e2)
{
return new CodeGreaterThan (e1, e2);
}
public static CodeExpression IsSmallerThan (CodeExpression e1, CodeExpression e2)
{
return new CodeLessThan (e1, e2);
}
public static CodeExpression IsGreaterEqualThan (CodeExpression e1, CodeExpression e2)
{
return new CodeGreaterEqualThan (e1, e2);
}
public static CodeExpression IsSmallerEqualThan (CodeExpression e1, CodeExpression e2)
{
return new CodeLessEqualThan (e1, e2);
}
public static CodeExpression Not (CodeExpression e)
{
return new CodeNot (e);
}
public static CodeExpression Add (CodeExpression e1, CodeExpression e2)
{
return new CodeAdd (e1, e2);
}
public static CodeExpression Subtract (CodeExpression e1, CodeExpression e2)
{
return new CodeSub (e1, e2);
}
public static CodeExpression Multiply (CodeExpression e1, CodeExpression e2)
{
return new CodeMul (e1, e2);
}
public static CodeExpression Divide (CodeExpression e1, CodeExpression e2)
{
return new CodeDiv (e1, e2);
}
public CodeExpression CastTo (Type type)
{
return new CodeCast (type, this);
}
public CodeExpression And (CodeExpression other)
{
return new CodeAnd (this, other);
}
public CodeExpression Is (Type type)
{
return new CodeIs (type, this);
}
public CodeExpression Call (string name, params CodeExpression[] parameters)
{
return new CodeMethodCall (this, name, parameters);
}
public CodeExpression Call (MethodInfo method, params CodeExpression[] parameters)
{
return new CodeMethodCall (this, method, parameters);
}
public CodeValueReference MemGet (string name)
{
MemberInfo[] mems = GetResultType().GetMember (name, BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic);
if (mems.Length == 0) throw new InvalidOperationException ("Field '" + name + "' not found in " + GetResultType());
return MemGet (mems[0]);
}
public CodeValueReference MemGet (MemberInfo member)
{
if (member is FieldInfo)
return new CodeFieldReference (this, (FieldInfo)member);
else if (member is PropertyInfo)
return new CodePropertyReference (this, (PropertyInfo)member);
else
throw new InvalidOperationException (member.Name + " is not either a field or a property");
}
public CodeValueReference this [CodeExpression index]
{
get { return new CodeArrayItem (this, index); }
}
public CodeValueReference this [string name]
{
get { return MemGet (name); }
}
public CodeValueReference this [FieldInfo field]
{
get { return new CodeFieldReference (this, field); }
}
public CodeValueReference this [PropertyInfo prop]
{
get { return new CodePropertyReference (this, prop); }
}
public CodeExpression ArrayLength
{
get { return new CodeArrayLength (this); }
}
public CodeExpression IsNull
{
get { return new CodeEquals (this, new CodeLiteral (null, this.GetResultType())); }
}
public static CodeExpression NullValue (Type type)
{
return new CodeLiteral (null, type);
}
public bool IsNumber
{
get {
return CodeGenerationHelper.IsNumber (GetResultType ());
}
}
}
public abstract class CodeConditionExpression: CodeExpression
{
public virtual void GenerateForBranch (ILGenerator gen, Label label, bool jumpCase)
{
Generate (gen);
if (jumpCase)
gen.Emit (OpCodes.Brtrue, label);
else
gen.Emit (OpCodes.Brfalse, label);
}
}
}
#endif
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