mirror of
https://github.com/SSCLI/sscli_20021101
synced 2026-06-08 12:28:57 +00:00
yallie
565 lines
22 KiB
C#
565 lines
22 KiB
C#
// ==++==
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//
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//
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// Copyright (c) 2002 Microsoft Corporation. All rights reserved.
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//
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// The use and distribution terms for this software are contained in the file
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// named license.txt, which can be found in the root of this distribution.
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// By using this software in any fashion, you are agreeing to be bound by the
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// terms of this license.
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//
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// You must not remove this notice, or any other, from this software.
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//
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//
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// ==--==
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namespace Microsoft.JScript
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{
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using System;
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using System.Reflection;
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using System.Reflection.Emit;
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using System.Diagnostics;
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public sealed class NumericBinary : BinaryOp{
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private Object metaData = null;
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internal NumericBinary(Context context, AST operand1, AST operand2, JSToken operatorTok)
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: base(context, operand1, operand2, operatorTok) {
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}
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public NumericBinary(int operatorTok)
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: base(null, null, null, (JSToken)operatorTok){
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}
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internal override Object Evaluate(){
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return this.EvaluateNumericBinary(this.operand1.Evaluate(), this.operand2.Evaluate());
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}
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#if !DEBUG
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[DebuggerStepThroughAttribute]
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[DebuggerHiddenAttribute]
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#endif
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public Object EvaluateNumericBinary(Object v1, Object v2){
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if (v1 is Int32 && v2 is Int32)
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return NumericBinary.DoOp((Int32)v1, (Int32)v2, this.operatorTok);
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else if (v1 is Double && v2 is Double)
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return NumericBinary.DoOp((Double)v1, (Double)v2, this.operatorTok);
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else
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return this.EvaluateNumericBinary(v1, v2, this.operatorTok);
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}
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#if !DEBUG
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[DebuggerStepThroughAttribute]
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[DebuggerHiddenAttribute]
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#endif
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private Object EvaluateNumericBinary(Object v1, Object v2, JSToken operatorTok){
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IConvertible ic1 = Convert.GetIConvertible(v1);
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IConvertible ic2 = Convert.GetIConvertible(v2);
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TypeCode t1 = Convert.GetTypeCode(v1, ic1);
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TypeCode t2 = Convert.GetTypeCode(v2, ic2);
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switch (t1){
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case TypeCode.Empty:
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return Double.NaN;
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case TypeCode.DBNull:
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return this.EvaluateNumericBinary(0, v2, operatorTok);
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case TypeCode.Char: {
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Object result;
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int val = ic1.ToInt32(null);
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switch (t2){
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case TypeCode.Empty:
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return Double.NaN;
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case TypeCode.DBNull:
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return NumericBinary.DoOp(val, 0, operatorTok);
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case TypeCode.Boolean:
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case TypeCode.Char:
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.UInt16:
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case TypeCode.Int32:
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result = NumericBinary.DoOp(val, ic2.ToInt32(null), operatorTok);
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break;
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case TypeCode.UInt32:
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case TypeCode.Int64:
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result = NumericBinary.DoOp((long)val, ic2.ToInt64(null), operatorTok);
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break;
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case TypeCode.UInt64:
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result = NumericBinary.DoOp((double)val, ic2.ToDouble(null), operatorTok);
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break;
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case TypeCode.Single:
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case TypeCode.Double:
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result = NumericBinary.DoOp((double)ic1.ToInt32(null), ic2.ToDouble(null), operatorTok);
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break;
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case TypeCode.String:
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result = NumericBinary.DoOp(val, Convert.ToNumber(v2, ic2), operatorTok);
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break;
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case TypeCode.Object:
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case TypeCode.Decimal:
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case TypeCode.DateTime:
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default:
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result = null;
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break;
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}
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if (this.operatorTok == JSToken.Minus && result != null && t2 != TypeCode.Char){
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return Convert.Coerce2(result, TypeCode.Char, false);
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} else if (result != null)
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return result;
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break;
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}
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case TypeCode.Boolean:
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.UInt16:
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case TypeCode.Int32:
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{int val = ic1.ToInt32(null);
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switch (t2){
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case TypeCode.Empty:
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return Double.NaN;
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case TypeCode.DBNull:
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return NumericBinary.DoOp(val, 0, operatorTok);
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case TypeCode.Boolean:
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case TypeCode.Char:
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.UInt16:
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case TypeCode.Int32:
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return NumericBinary.DoOp(val, ic2.ToInt32(null), operatorTok);
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case TypeCode.UInt32:
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case TypeCode.Int64:
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return NumericBinary.DoOp((long)val, ic2.ToInt64(null), operatorTok);
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case TypeCode.UInt64:
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if (val >= 0)
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return NumericBinary.DoOp((ulong)val, ic2.ToUInt64(null), operatorTok);
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else
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return NumericBinary.DoOp((double)val, ic2.ToDouble(null), operatorTok);
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case TypeCode.Single:
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case TypeCode.Double:
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return NumericBinary.DoOp((double)val, ic2.ToDouble(null), operatorTok);
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case TypeCode.Object:
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case TypeCode.Decimal:
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case TypeCode.DateTime:
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case TypeCode.String:
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break;
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}
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break;}
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case TypeCode.UInt32:
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{uint val = ic1.ToUInt32(null);
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switch (t2){
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case TypeCode.Empty:
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return Double.NaN;
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case TypeCode.DBNull:
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return NumericBinary.DoOp(val, 0, operatorTok);
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.Int32:
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int val2 = ic2.ToInt32(null);
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if (val2 >= 0)
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return NumericBinary.DoOp(val, (uint)val2, operatorTok);
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else
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return NumericBinary.DoOp((long)val, (long)val2, operatorTok);
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case TypeCode.Int64:
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return NumericBinary.DoOp((long)val, ic2.ToInt64(null), operatorTok);
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case TypeCode.Boolean:
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case TypeCode.Char:
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case TypeCode.UInt16:
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case TypeCode.UInt32:
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return NumericBinary.DoOp(val, ic2.ToUInt32(null), operatorTok);
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case TypeCode.UInt64:
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return NumericBinary.DoOp((ulong)val, ic2.ToUInt64(null), operatorTok);
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case TypeCode.Single:
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case TypeCode.Double:
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return NumericBinary.DoOp((double)val, ic2.ToDouble(null), operatorTok);
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case TypeCode.Object:
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case TypeCode.Decimal:
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case TypeCode.DateTime:
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case TypeCode.String:
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break;
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}
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break;}
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case TypeCode.Int64:
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{long val = ic1.ToInt64(null);
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switch (t2){
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case TypeCode.Empty:
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return Double.NaN;
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case TypeCode.DBNull:
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return NumericBinary.DoOp(val, 0, operatorTok);
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case TypeCode.Boolean:
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case TypeCode.Char:
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.UInt16:
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case TypeCode.Int32:
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case TypeCode.UInt32:
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case TypeCode.Int64:
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return NumericBinary.DoOp(val, ic2.ToInt64(null), operatorTok);
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case TypeCode.UInt64:
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if (val >= 0)
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return NumericBinary.DoOp((ulong)val, ic2.ToUInt64(null), operatorTok);
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else
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return NumericBinary.DoOp((double)val, ic2.ToDouble(null), operatorTok);
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case TypeCode.Single:
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case TypeCode.Double:
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return NumericBinary.DoOp((double)val, ic2.ToDouble(null), operatorTok);
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case TypeCode.Object:
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case TypeCode.Decimal:
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case TypeCode.DateTime:
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case TypeCode.String:
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break;
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}
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break;}
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case TypeCode.UInt64:
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{ulong val = ic1.ToUInt64(null);
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switch (t2){
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case TypeCode.Empty:
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return Double.NaN;
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case TypeCode.DBNull:
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return NumericBinary.DoOp(val, 0, operatorTok);
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.Int32:
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case TypeCode.Int64:
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long val2 = ic2.ToInt64(null);
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if (val2 >= 0)
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return NumericBinary.DoOp(val, (ulong)val2, operatorTok);
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else
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return NumericBinary.DoOp((double)val, (double)val2, operatorTok);
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case TypeCode.Boolean:
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case TypeCode.Char:
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case TypeCode.UInt16:
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case TypeCode.UInt32:
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case TypeCode.UInt64:
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return NumericBinary.DoOp(val, ic2.ToUInt64(null), operatorTok);
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case TypeCode.Single:
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case TypeCode.Double:
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return NumericBinary.DoOp((double)val, ic2.ToDouble(null), operatorTok);
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case TypeCode.Object:
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case TypeCode.Decimal:
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case TypeCode.DateTime:
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case TypeCode.String:
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break;
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}
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break;}
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case TypeCode.Single:
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case TypeCode.Double:
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{double d = ic1.ToDouble(null);
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switch (t2){
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case TypeCode.Empty:
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return Double.NaN;
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case TypeCode.DBNull:
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return NumericBinary.DoOp(d, 0, operatorTok);
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case TypeCode.Boolean:
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case TypeCode.Char:
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case TypeCode.SByte:
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case TypeCode.Byte:
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case TypeCode.Int16:
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case TypeCode.UInt16:
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case TypeCode.Int32:
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return NumericBinary.DoOp(d, (double)ic2.ToInt32(null), operatorTok);
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case TypeCode.UInt32:
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case TypeCode.Int64:
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case TypeCode.UInt64:
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case TypeCode.Single:
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case TypeCode.Double:
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return NumericBinary.DoOp(d, ic2.ToDouble(null), operatorTok);
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case TypeCode.Object:
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case TypeCode.Decimal:
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case TypeCode.DateTime:
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case TypeCode.String:
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break;
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}
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break;}
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case TypeCode.Object:
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case TypeCode.Decimal:
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case TypeCode.DateTime:
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case TypeCode.String:
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break;
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}
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if (v2 == null) return Double.NaN;
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MethodInfo oper = this.GetOperator(v1.GetType(), v2.GetType());
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if (oper != null)
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return oper.Invoke(null, (BindingFlags)0, JSBinder.ob, new Object[]{v1, v2}, null);
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else{
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return NumericBinary.DoOp(v1, v2, ic1, ic2, operatorTok);
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}
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}
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public static Object DoOp(Object v1, Object v2, JSToken operatorTok){
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return DoOp(v1, v2, Convert.GetIConvertible(v1), Convert.GetIConvertible(v2), operatorTok);
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}
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private static Object DoOp(Object v1, Object v2, IConvertible ic1, IConvertible ic2, JSToken operatorTok){
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if (operatorTok == JSToken.Minus){
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IConvertible ic1a = ic1;
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Object p1 = Convert.ToPrimitive(v1, PreferredType.Either, ref ic1a);
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TypeCode t1 = Convert.GetTypeCode(p1, ic1a);
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if (t1 == TypeCode.Char){
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IConvertible ic2a = ic2;
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Object p2 = Convert.ToPrimitive(v2, PreferredType.Either, ref ic2a);
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TypeCode t2 = Convert.GetTypeCode(p2, ic2a);
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if (t2 == TypeCode.String){
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String str2 = ic2a.ToString(null);
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if (str2.Length == 1){
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t2 = TypeCode.Char;
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p2 = str2[0];
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ic2a = Convert.GetIConvertible(p2);
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}
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}
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Object result = NumericBinary.DoOp(Convert.ToNumber(p1, ic1a), Convert.ToNumber(p2, ic2a), operatorTok);
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if (t2 != TypeCode.Char)
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result = Convert.Coerce2(result, TypeCode.Char, false);
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return result;
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}
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}
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return NumericBinary.DoOp(Convert.ToNumber(v1, ic1), Convert.ToNumber(v2, ic2), operatorTok);
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}
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private static Object DoOp(int x, int y, JSToken operatorTok){
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switch (operatorTok){
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case JSToken.Divide:
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return ((double)x) / (double)y;
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case JSToken.Minus:
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try{
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checked {return x - y;}
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}catch(OverflowException){
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return ((double)x) - (double)y;
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}
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case JSToken.Modulo:
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if (x <= 0 || y <= 0)
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return ((double)x) % (double)y; //Need to result in a signed 0
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return x % y;
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case JSToken.Multiply:
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if (x == 0 || y == 0) return ((double)x) * (double)y; //Need to result in a signed 0
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try{
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checked {return x * y;}
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}catch(OverflowException){
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return ((double)x) * (double)y;
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}
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default:
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throw new JScriptException(JSError.InternalError);
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}
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}
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private static Object DoOp(uint x, uint y, JSToken operatorTok){
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switch (operatorTok){
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case JSToken.Divide:
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return ((double)x) / (double)y;
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case JSToken.Minus:
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try{
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checked {return x - y;}
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}catch(OverflowException){
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return ((double)x) - (double)y;
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}
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case JSToken.Modulo:
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if (y == 0) return Double.NaN;
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return x % y;
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case JSToken.Multiply:
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try{
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checked {return x * y;}
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}catch(OverflowException){
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return ((double)x) * (double)y;
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}
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default:
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throw new JScriptException(JSError.InternalError);
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}
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}
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private static Object DoOp(long x, long y, JSToken operatorTok){
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switch (operatorTok){
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case JSToken.Divide:
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return ((double)x) / (double)y;
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case JSToken.Minus:
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try{
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checked {return x - y;}
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}catch(OverflowException){
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return ((double)x) - (double)y;
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}
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case JSToken.Modulo:
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if (y == 0) return Double.NaN;
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long result = x % y;
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if (result == 0) //Need to result in a signed 0
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if (x < 0)
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if (y < 0) return 0; else return 1.0 / Double.NegativeInfinity;
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else
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if (y < 0) return 1.0 / Double.NegativeInfinity; else return 0;
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return result;
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case JSToken.Multiply:
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if (x == 0 || y == 0) return ((double)x) * (double)y; //Need to result in a signed 0
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try{
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checked {return x * y;}
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}catch(OverflowException){
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return ((double)x) * (double)y;
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}
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default:
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throw new JScriptException(JSError.InternalError);
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}
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}
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private static Object DoOp(ulong x, ulong y, JSToken operatorTok){
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switch (operatorTok){
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case JSToken.Divide:
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return ((double)x) / (double)y;
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case JSToken.Minus:
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try{
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checked {return x - y;}
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}catch(OverflowException){
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return ((double)x) - (double)y;
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}
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case JSToken.Modulo:
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if (y == 0) return Double.NaN;
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return x % y;
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case JSToken.Multiply:
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try{
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checked {return x * y;}
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}catch(OverflowException){
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return ((double)x) * (double)y;
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}
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default:
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throw new JScriptException(JSError.InternalError);
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}
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}
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private static Object DoOp(double x, double y, JSToken operatorTok){
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switch (operatorTok){
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case JSToken.Divide:
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return x / y;
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case JSToken.Minus:
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return x - y;
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case JSToken.Modulo:
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return x % y;
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case JSToken.Multiply:
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return x * y;
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default:
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throw new JScriptException(JSError.InternalError);
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}
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}
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internal override IReflect InferType(JSField inference_target){
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MethodInfo oper;
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if (this.type1 == null || inference_target != null){
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oper = this.GetOperator(this.operand1.InferType(inference_target), this.operand2.InferType(inference_target));
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}else
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oper = this.GetOperator(this.type1, this.type2);
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if (oper != null){
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this.metaData = oper;
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return oper.ReturnType;
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}
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if (this.type1 == Typeob.Char && this.operatorTok == JSToken.Minus){
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TypeCode t2 = Type.GetTypeCode(this.type2);
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if (Convert.IsPrimitiveNumericTypeCode(t2) || t2 == TypeCode.Boolean)
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return Typeob.Char;
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else if (t2 == TypeCode.Char)
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return Typeob.Int32;
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}
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if ((Convert.IsPrimitiveNumericTypeFitForDouble(this.type1) || Typeob.JSObject.IsAssignableFrom(this.type1))
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&& (Convert.IsPrimitiveNumericTypeFitForDouble(this.type2) || Typeob.JSObject.IsAssignableFrom(this.type2)))
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return Typeob.Double;
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else
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return Typeob.Object;
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}
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internal override void TranslateToIL(ILGenerator il, Type rtype){
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if (this.metaData == null){
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Type rt = Typeob.Double;
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if (Convert.IsPrimitiveNumericType(rtype) && Convert.IsPromotableTo(this.type1, rtype) && Convert.IsPromotableTo(this.type2, rtype))
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rt = rtype;
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if (this.operatorTok == JSToken.Divide)
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rt = Typeob.Double;
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else if (rt == Typeob.SByte || rt == Typeob.Int16)
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rt = Typeob.Int32;
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else if (rt == Typeob.Byte || rt == Typeob.UInt16 || rt == Typeob.Char)
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rt = Typeob.UInt32;
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this.operand1.TranslateToIL(il, rt);
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this.operand2.TranslateToIL(il, rt);
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if (rt == Typeob.Double || rt == Typeob.Single){
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switch (this.operatorTok){
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case JSToken.Divide:
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il.Emit(OpCodes.Div); break;
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case JSToken.Minus:
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il.Emit(OpCodes.Sub); break;
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case JSToken.Modulo:
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il.Emit(OpCodes.Rem); break;
|
|
case JSToken.Multiply:
|
|
il.Emit(OpCodes.Mul); break;
|
|
default:
|
|
throw new JScriptException(JSError.InternalError, this.context);
|
|
}
|
|
}else if (rt == Typeob.Int32 || rt == Typeob.Int64){
|
|
switch (this.operatorTok){
|
|
case JSToken.Divide:
|
|
il.Emit(OpCodes.Div); break;
|
|
case JSToken.Minus:
|
|
il.Emit(OpCodes.Sub_Ovf); break;
|
|
case JSToken.Modulo:
|
|
il.Emit(OpCodes.Rem); break;
|
|
case JSToken.Multiply:
|
|
il.Emit(OpCodes.Mul_Ovf); break;
|
|
default:
|
|
throw new JScriptException(JSError.InternalError, this.context);
|
|
}
|
|
}else{
|
|
switch (this.operatorTok){
|
|
case JSToken.Divide:
|
|
il.Emit(OpCodes.Div); break;
|
|
case JSToken.Minus:
|
|
il.Emit(OpCodes.Sub_Ovf_Un); break;
|
|
case JSToken.Modulo:
|
|
il.Emit(OpCodes.Rem); break;
|
|
case JSToken.Multiply:
|
|
il.Emit(OpCodes.Mul_Ovf_Un); break;
|
|
default:
|
|
throw new JScriptException(JSError.InternalError, this.context);
|
|
}
|
|
}
|
|
if (Convert.ToType(this.InferType(null)) == Typeob.Char){
|
|
Convert.Emit(this, il, rt, Typeob.Char);
|
|
Convert.Emit(this, il, Typeob.Char, rtype);
|
|
} else
|
|
Convert.Emit(this, il, rt, rtype);
|
|
return;
|
|
}
|
|
if (this.metaData is MethodInfo){
|
|
MethodInfo oper = (MethodInfo)this.metaData;
|
|
ParameterInfo[] pars = oper.GetParameters();
|
|
this.operand1.TranslateToIL(il, pars[0].ParameterType);
|
|
this.operand2.TranslateToIL(il, pars[1].ParameterType);
|
|
il.Emit(OpCodes.Call, oper);
|
|
Convert.Emit(this, il, oper.ReturnType, rtype);
|
|
return;
|
|
}
|
|
//Getting here is just too bad. We do not know until the code runs whether or not to call an overloaded operator method.
|
|
//Compile operands to objects and devolve the decision making to run time thunks
|
|
il.Emit(OpCodes.Ldloc, (LocalBuilder)this.metaData);
|
|
this.operand1.TranslateToIL(il, Typeob.Object);
|
|
this.operand2.TranslateToIL(il, Typeob.Object);
|
|
il.Emit(OpCodes.Call, CompilerGlobals.evaluateNumericBinaryMethod);
|
|
Convert.Emit(this, il, Typeob.Object, rtype);
|
|
}
|
|
|
|
internal override void TranslateToILInitializer(ILGenerator il){
|
|
IReflect rtype = this.InferType(null);
|
|
this.operand1.TranslateToILInitializer(il);
|
|
this.operand2.TranslateToILInitializer(il);
|
|
if (rtype != Typeob.Object)
|
|
return;
|
|
this.metaData = il.DeclareLocal(typeof(NumericBinary));
|
|
ConstantWrapper.TranslateToILInt(il, (int)this.operatorTok);
|
|
il.Emit(OpCodes.Newobj, CompilerGlobals.numericBinaryConstructor);
|
|
il.Emit(OpCodes.Stloc, (LocalBuilder)this.metaData);
|
|
}
|
|
}
|
|
}
|