public static bool Neg(Instruction instruction, CompileContext compileContext)
{
var value = compileContext.Pop();
compileContext.Push(value.type, CompileContext.Format("-({0})", value));
return(true);
}
public static bool Construct(MethodReference methodReference, CompileContext compileContext)
{
var parameters = compileContext.Pop(methodReference.Parameters.Count);
var method = compileContext.Method(methodReference, parameters);
compileContext.Push(method);
return(true);
}
public static bool Bgt(Instruction instruction, CompileContext compileContext)
{
var b = compileContext.Pop();
var a = compileContext.Pop();
compileContext.Push(typeof(int).GetTypeDefinition(), CompileContext.Format("int({0} > {1})", a, b));
return(true);
}
public static bool Ldobj(Instruction instruction, CompileContext compileContext)
{
// ldobj – copy a value from an address to the stack
var value = compileContext.Pop();
compileContext.Push(value);
return(true);
}
public static bool Rem(Instruction instruction, CompileContext compileContext)
{
var b = compileContext.Pop();
var a = compileContext.Pop();
compileContext.Push(new Value(a.type, CompileContext.Format("mod({0}, {1})", a, b)));
return(true);
}
public static bool Ldloc_S(Instruction instruction, CompileContext compileContext)
{
// ldloc.s indx - Load local variable of index indx onto stack, short form.
var variableDefinition = instruction.Operand as VariableDefinition;
var local = compileContext.Allocate(variableDefinition.VariableType, (uint)variableDefinition.Index);
compileContext.Push(local);
return(true);
}
public static bool Ldarga_S(Instruction instruction, CompileContext compileContext)
{
// ldloca.s indx - Load address of local variable with index indx, short form.
var parameterDefinition = instruction.Operand as ParameterDefinition;
var local = compileContext.Push(parameterDefinition);
local.isAddress = true;
return(true);
}
public static bool Blt_S(Instruction instruction, CompileContext compileContext)
{
// blt.s target - Branch to target if less than, short for
var b = compileContext.Pop();
var a = compileContext.Pop();
compileContext.Push(typeof(int).GetTypeDefinition(), CompileContext.Format("int({0} < {1})", a, b));
return(true);
}
public static bool Ble(Instruction instruction, CompileContext compileContext)
{
// ble target - Branch to target if less than or equal to.
var b = compileContext.Pop();
var a = compileContext.Pop();
compileContext.Push(typeof(int).GetTypeDefinition(), CompileContext.Format("int({0} <= {1})", a, b));
return(true);
}
public static bool Ldfld(Instruction instruction, CompileContext compileContext)
{
// ldfld field - Push the value of field of object (or value type) obj, onto the stack.
var fieldDefinition = (instruction.Operand as FieldReference).Resolve();
var @this = compileContext.Pop();
compileContext.Push(fieldDefinition.FieldType, compileContext.Field(@this, fieldDefinition));
return(true);
}
public static bool Ldloca_S(Instruction instruction, CompileContext compileContext)
{
// ldloca.s indx - Load address of local variable with index indx, short form.
var variableDefinition = instruction.Operand as VariableDefinition;
var local = compileContext.Allocate(variableDefinition.VariableType, (uint)variableDefinition.Index);
local.isAddress = true;
compileContext.Push(local);
return(true);
}
public static bool Operator(Instruction instruction, CompileContext compileContext, string @operator, TypeReference type = null)
{
var b = compileContext.Pop();
var a = compileContext.Pop();
string pattern;
if (type != null)
{
pattern = "{3}({0} {1} {2})";
}
else
{
pattern = "({0} {1} {2})";
}
compileContext.Push(new Value(type != null ? type : a.type, CompileContext.Format(pattern, a, @operator, b, type)));
return(true);
}
public static bool Ldarg_N(Instruction instruction, CompileContext compileContext, int n)
{
compileContext.Push(compileContext.parameters[n - 1]);
return(true);
}
public static bool Ldarg_0(Instruction instruction, CompileContext compileContext)
{
// ldarg.s num - Load argument numbered num onto the stack, short form.
compileContext.Push(compileContext.declaringType, "this");
return(true);
}
public static bool Dup(Instruction instruction, CompileContext compileContext)
{
compileContext.Push(compileContext.Peek());
return(true);
}
public static bool Conv_R4(Instruction instruction, CompileContext compileContext)
{
compileContext.Push(typeof(float).GetTypeDefinition(), CompileContext.Format("float({0})", compileContext.Pop()));
return(true);
}
public static bool Ldc_R4(Instruction instruction, CompileContext compileContext)
{
// ldc.r4 num - Push num of type float32 onto the stack as F.
compileContext.Push(typeof(float).GetTypeDefinition(), string.Format("float({0})", (float)instruction.Operand));
return(true);
}
public static bool Ldarg_S(Instruction instruction, CompileContext compileContext)
{
// ldarg.s num - Load argument numbered num onto the stack, short form.
compileContext.Push(instruction.Operand as ParameterDefinition);
return(true);
}
public static bool Brfalse(Instruction instruction, CompileContext compileContext)
{
compileContext.Push(typeof(int).GetTypeDefinition(), CompileContext.Format("int({0} == 0)", compileContext.Pop()));
return(true);
}
public static bool Brtrue(Instruction instruction, CompileContext compileContext)
{
// brtrue target - Branch to target if value is non-zero (true).
compileContext.Push(typeof(int).GetTypeDefinition(), CompileContext.Format("int({0} == 1)", compileContext.Pop()));
return(true);
}
public static bool Ldc_I4_X(Instruction instruction, CompileContext compileContext, int value)
{
// ldc.i4.m1 - Push -1 onto the stack as int32.
compileContext.Push(typeof(int).GetTypeDefinition(), value);
return(true);
}
public static bool Call(MethodReference methodReference, CompileContext compileContext)
{
var methodDefinition = methodReference.Resolve();
if (methodDefinition.IsGetter) // call property getter
{
var propertyName = methodDefinition.Name.Substring("get_".Length);
var @this = compileContext.Pop();
var typeDefinition = @this.type.Resolve();
var propertyDefinition = typeDefinition.FindPropertyDefinitionIncludeAncestors(propertyName);
if (typeof(ScriptableMaterial).IsAssignableFrom(typeDefinition.GetRuntimeType()))
{
Debug.Assert((@this.name as string) == "this");
// uniform type is defined as a property in ScriptingMaterial
compileContext.Push(propertyDefinition);
var propertyInfo = propertyDefinition.DeclaringType.GetRuntimeType().GetProperty(propertyDefinition.Name);
if (propertyInfo.GetCustomAttribute <UniformAttribute>() != null)
{
compileContext.AddUniform(new Uniform(propertyInfo));
}
else
{
throw new Exception("uncertain material property get behaviour");
}
return(true);
}
else
{
compileContext.Push(compileContext.Property(@this, propertyDefinition));
}
}
else // method
{
var parameters = compileContext.Pop(methodReference.Parameters.Count());
if (methodDefinition.IsConstructor)
{
// Call the initializer on the local (from ECMA-335: Page 163)
var method = compileContext.Method(methodDefinition, parameters.ToArray());
if (compileContext.Peek().isAddress)
{
var target = compileContext.Pop();
compileContext.Assign(target, method);
}
}
else
{
if (methodDefinition.HasThis)
{
parameters.Insert(0, compileContext.Pop());
}
var method = compileContext.Method(methodDefinition, parameters.ToArray());
if (!methodDefinition.ReturnType.Resolve().IsSameRuntimeOf(typeof(void).GetTypeDefinition()))
{
compileContext.Push(method);
}
else
{
compileContext.WriteLine(method.ToString());
}
}
}
return(true);
}
public static bool Ldloc_N(Instruction instruction, CompileContext compileContext, uint index)
{
compileContext.Push(compileContext.GetLocal(index));
return(true);
}
