383 lines
15 KiB
C#
383 lines
15 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="LogicalExpr.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">[....]</owner>
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//------------------------------------------------------------------------------
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namespace MS.Internal.Xml.XPath {
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using System;
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using System.Xml;
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using System.Xml.XPath;
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using System.Diagnostics;
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using System.Globalization;
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using System.Xml.Xsl;
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internal sealed class LogicalExpr : ValueQuery {
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Operator.Op op;
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Query opnd1;
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Query opnd2;
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public LogicalExpr(Operator.Op op, Query opnd1, Query opnd2) {
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Debug.Assert(
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Operator.Op.LT == op || Operator.Op.GT == op ||
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Operator.Op.LE == op || Operator.Op.GE == op ||
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Operator.Op.EQ == op || Operator.Op.NE == op
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);
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this.op = op;
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this.opnd1 = opnd1;
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this.opnd2 = opnd2;
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}
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private LogicalExpr(LogicalExpr other) : base (other) {
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this.op = other.op;
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this.opnd1 = Clone(other.opnd1);
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this.opnd2 = Clone(other.opnd2);
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}
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public override void SetXsltContext(XsltContext context){
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opnd1.SetXsltContext(context);
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opnd2.SetXsltContext(context);
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}
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public override object Evaluate(XPathNodeIterator nodeIterator) {
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Operator.Op op = this.op;
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object val1 = this.opnd1.Evaluate(nodeIterator);
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object val2 = this.opnd2.Evaluate(nodeIterator);
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int type1 = (int)GetXPathType(val1);
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int type2 = (int)GetXPathType(val2);
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if (type1 < type2) {
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op = Operator.InvertOperator(op);
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object valTemp = val1;
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val1 = val2;
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val2 = valTemp;
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int typeTmp = type1;
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type1 = type2;
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type2 = typeTmp;
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}
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if (op == Operator.Op.EQ || op == Operator.Op.NE) {
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return CompXsltE[type1][type2](op, val1, val2);
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} else {
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return CompXsltO[type1][type2](op, val1, val2);
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}
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}
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delegate bool cmpXslt(Operator.Op op, object val1, object val2);
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// Number, String, Boolean, NodeSet, Navigator
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private static readonly cmpXslt[][] CompXsltE = {
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new cmpXslt[] { new cmpXslt(cmpNumberNumber), null , null , null , null },
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new cmpXslt[] { new cmpXslt(cmpStringNumber), new cmpXslt(cmpStringStringE), null , null , null },
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new cmpXslt[] { new cmpXslt(cmpBoolNumberE ), new cmpXslt(cmpBoolStringE ), new cmpXslt(cmpBoolBoolE ), null , null },
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new cmpXslt[] { new cmpXslt(cmpQueryNumber ), new cmpXslt(cmpQueryStringE ), new cmpXslt(cmpQueryBoolE ), new cmpXslt(cmpQueryQueryE ), null },
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new cmpXslt[] { new cmpXslt(cmpRtfNumber ), new cmpXslt(cmpRtfStringE ), new cmpXslt(cmpRtfBoolE ), new cmpXslt(cmpRtfQueryE ), new cmpXslt(cmpRtfRtfE) },
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};
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private static readonly cmpXslt[][] CompXsltO = {
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new cmpXslt[] { new cmpXslt(cmpNumberNumber), null , null , null , null },
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new cmpXslt[] { new cmpXslt(cmpStringNumber), new cmpXslt(cmpStringStringO), null , null , null },
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new cmpXslt[] { new cmpXslt(cmpBoolNumberO ), new cmpXslt(cmpBoolStringO ), new cmpXslt(cmpBoolBoolO ), null , null },
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new cmpXslt[] { new cmpXslt(cmpQueryNumber ), new cmpXslt(cmpQueryStringO ), new cmpXslt(cmpQueryBoolO ), new cmpXslt(cmpQueryQueryO ), null },
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new cmpXslt[] { new cmpXslt(cmpRtfNumber ), new cmpXslt(cmpRtfStringO ), new cmpXslt(cmpRtfBoolO ), new cmpXslt(cmpRtfQueryO ), new cmpXslt(cmpRtfRtfO) },
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};
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/*cmpXslt:*/
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static bool cmpQueryQueryE(Operator.Op op, object val1, object val2) {
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Debug.Assert(op == Operator.Op.EQ || op == Operator.Op.NE);
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bool isEQ = (op == Operator.Op.EQ);
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NodeSet n1 = new NodeSet(val1);
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NodeSet n2 = new NodeSet(val2);
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while (true) {
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if (! n1.MoveNext()) {
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return false;
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}
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if (! n2.MoveNext()) {
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return false;
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}
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string str1 = n1.Value;
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do {
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if ((str1 == n2.Value) == isEQ) {
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return true;
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}
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}while (n2.MoveNext());
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n2.Reset();
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}
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}
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/*cmpXslt:*/
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static bool cmpQueryQueryO(Operator.Op op, object val1, object val2) {
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Debug.Assert(
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op == Operator.Op.LT || op == Operator.Op.GT ||
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op == Operator.Op.LE || op == Operator.Op.GE
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);
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NodeSet n1 = new NodeSet(val1);
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NodeSet n2 = new NodeSet(val2);
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while (true) {
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if (!n1.MoveNext()) {
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return false;
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}
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if (!n2.MoveNext()) {
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return false;
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}
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double num1 = NumberFunctions.Number(n1.Value);
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do {
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if (cmpNumberNumber(op, num1, NumberFunctions.Number(n2.Value))) {
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return true;
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}
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} while (n2.MoveNext());
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n2.Reset();
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}
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}
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static bool cmpQueryNumber(Operator.Op op, object val1, object val2) {
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NodeSet n1 = new NodeSet(val1);
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double n2 = (double) val2;
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while (n1.MoveNext()) {
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if (cmpNumberNumber(op, NumberFunctions.Number(n1.Value), n2)) {
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return true;
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}
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}
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return false;
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}
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static bool cmpQueryStringE(Operator.Op op, object val1, object val2) {
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NodeSet n1 = new NodeSet(val1);
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string n2 = (string) val2;
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while (n1.MoveNext()) {
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if (cmpStringStringE(op, n1.Value, n2)) {
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return true;
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}
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}
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return false;
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}
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static bool cmpQueryStringO(Operator.Op op, object val1, object val2) {
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NodeSet n1 = new NodeSet(val1);
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double n2 = NumberFunctions.Number((string) val2);
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while (n1.MoveNext()) {
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if (cmpNumberNumberO(op, NumberFunctions.Number(n1.Value), n2)) {
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return true;
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}
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}
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return false;
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}
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static bool cmpRtfQueryE(Operator.Op op, object val1, object val2) {
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string n1 = Rtf(val1);
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NodeSet n2 = new NodeSet(val2);
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while (n2.MoveNext()) {
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if (cmpStringStringE(op, n1, n2.Value)) {
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return true;
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}
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}
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return false;
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}
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static bool cmpRtfQueryO(Operator.Op op, object val1, object val2) {
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double n1 = NumberFunctions.Number(Rtf(val1));
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NodeSet n2 = new NodeSet(val2);
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while (n2.MoveNext()) {
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if (cmpNumberNumberO(op, n1, NumberFunctions.Number(n2.Value))) {
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return true;
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}
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}
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return false;
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}
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static bool cmpQueryBoolE(Operator.Op op, object val1, object val2) {
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NodeSet n1 = new NodeSet(val1);
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bool b1 = n1.MoveNext();
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bool b2 = (bool)val2;
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return cmpBoolBoolE(op, b1, b2);
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}
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static bool cmpQueryBoolO(Operator.Op op, object val1, object val2) {
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NodeSet n1 = new NodeSet(val1);
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double d1 = n1.MoveNext() ? 1.0 : 0;
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double d2 = NumberFunctions.Number((bool)val2);
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return cmpNumberNumberO(op, d1, d2);
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}
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static bool cmpBoolBoolE(Operator.Op op, bool n1, bool n2) {
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Debug.Assert( op == Operator.Op.EQ || op == Operator.Op.NE,
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"Unexpected Operator.op code in cmpBoolBoolE()"
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);
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return (op == Operator.Op.EQ) == (n1 == n2);
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}
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static bool cmpBoolBoolE(Operator.Op op, object val1, object val2) {
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bool n1 = (bool)val1;
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bool n2 = (bool)val2;
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return cmpBoolBoolE(op, n1, n2);
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}
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static bool cmpBoolBoolO(Operator.Op op, object val1, object val2) {
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double n1 = NumberFunctions.Number((bool)val1);
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double n2 = NumberFunctions.Number((bool)val2);
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return cmpNumberNumberO(op, n1, n2);
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}
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static bool cmpBoolNumberE(Operator.Op op, object val1, object val2) {
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bool n1 = (bool)val1;
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bool n2 = BooleanFunctions.toBoolean((double)val2);
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return cmpBoolBoolE(op, n1, n2);
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}
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static bool cmpBoolNumberO(Operator.Op op, object val1, object val2) {
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double n1 = NumberFunctions.Number((bool)val1);
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double n2 = (double)val2;
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return cmpNumberNumberO(op, n1, n2);
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}
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static bool cmpBoolStringE(Operator.Op op, object val1, object val2) {
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bool n1 = (bool)val1;
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bool n2 = BooleanFunctions.toBoolean((string) val2);
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return cmpBoolBoolE(op, n1, n2);
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}
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static bool cmpRtfBoolE(Operator.Op op, object val1, object val2) {
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bool n1 = BooleanFunctions.toBoolean(Rtf(val1));
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bool n2 = (bool)val2;
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return cmpBoolBoolE(op, n1, n2);
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}
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static bool cmpBoolStringO(Operator.Op op, object val1, object val2) {
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return cmpNumberNumberO(op,
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NumberFunctions.Number((bool)val1),
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NumberFunctions.Number((string) val2)
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);
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}
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static bool cmpRtfBoolO(Operator.Op op, object val1, object val2) {
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return cmpNumberNumberO(op,
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NumberFunctions.Number(Rtf(val1)),
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NumberFunctions.Number((bool)val2)
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);
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}
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static bool cmpNumberNumber(Operator.Op op, double n1, double n2) {
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switch (op) {
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case Operator.Op.LT : return( n1 < n2 ) ;
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case Operator.Op.GT : return( n1 > n2 ) ;
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case Operator.Op.LE : return( n1 <= n2 ) ;
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case Operator.Op.GE : return( n1 >= n2 ) ;
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case Operator.Op.EQ : return( n1 == n2 ) ;
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case Operator.Op.NE : return( n1 != n2 ) ;
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}
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Debug.Fail("Unexpected Operator.op code in cmpNumberNumber()");
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return false;
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}
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static bool cmpNumberNumberO(Operator.Op op, double n1, double n2) {
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switch (op) {
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case Operator.Op.LT : return( n1 < n2 ) ;
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case Operator.Op.GT : return( n1 > n2 ) ;
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case Operator.Op.LE : return( n1 <= n2 ) ;
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case Operator.Op.GE : return( n1 >= n2 ) ;
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}
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Debug.Fail("Unexpected Operator.op code in cmpNumberNumberO()");
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return false;
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}
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static bool cmpNumberNumber(Operator.Op op, object val1, object val2) {
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double n1 = (double)val1;
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double n2 = (double)val2;
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return cmpNumberNumber(op, n1, n2);
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}
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static bool cmpStringNumber(Operator.Op op, object val1, object val2) {
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double n2 = (double)val2;
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double n1 = NumberFunctions.Number((string) val1);
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return cmpNumberNumber(op, n1, n2);
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}
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static bool cmpRtfNumber(Operator.Op op, object val1, object val2) {
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double n2 = (double)val2;
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double n1 = NumberFunctions.Number(Rtf(val1));
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return cmpNumberNumber(op, n1, n2);
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}
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static bool cmpStringStringE(Operator.Op op, string n1, string n2) {
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Debug.Assert( op == Operator.Op.EQ || op == Operator.Op.NE,
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"Unexpected Operator.op code in cmpStringStringE()"
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);
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return (op == Operator.Op.EQ) == (n1 == n2);
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}
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static bool cmpStringStringE(Operator.Op op, object val1, object val2) {
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string n1 = (string) val1;
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string n2 = (string) val2;
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return cmpStringStringE(op, n1, n2);
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}
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static bool cmpRtfStringE(Operator.Op op, object val1, object val2) {
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string n1 = Rtf(val1);
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string n2 = (string) val2;
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return cmpStringStringE(op, n1, n2);
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}
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static bool cmpRtfRtfE(Operator.Op op, object val1, object val2) {
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string n1 = Rtf(val1);
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string n2 = Rtf(val2);
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return cmpStringStringE(op, n1, n2);
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}
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static bool cmpStringStringO(Operator.Op op, object val1, object val2) {
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double n1 = NumberFunctions.Number((string) val1);
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double n2 = NumberFunctions.Number((string) val2);
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return cmpNumberNumberO(op, n1, n2);
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}
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static bool cmpRtfStringO(Operator.Op op, object val1, object val2) {
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double n1 = NumberFunctions.Number(Rtf(val1));
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double n2 = NumberFunctions.Number((string)val2);
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return cmpNumberNumberO(op, n1, n2);
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}
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static bool cmpRtfRtfO(Operator.Op op, object val1, object val2) {
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double n1 = NumberFunctions.Number(Rtf(val1));
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double n2 = NumberFunctions.Number(Rtf(val2));
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return cmpNumberNumberO(op, n1, n2);
|
||
|
|
}
|
||
|
|
|
||
|
|
public override XPathNodeIterator Clone() { return new LogicalExpr(this); }
|
||
|
|
|
||
|
|
private struct NodeSet {
|
||
|
|
private Query opnd;
|
||
|
|
private XPathNavigator current;
|
||
|
|
|
||
|
|
public NodeSet(object opnd) {
|
||
|
|
this.opnd = (Query) opnd;
|
||
|
|
current = null;
|
||
|
|
}
|
||
|
|
public bool MoveNext() {
|
||
|
|
current = opnd.Advance();
|
||
|
|
return current != null;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void Reset() {
|
||
|
|
opnd.Reset();
|
||
|
|
}
|
||
|
|
|
||
|
|
public string Value { get { return this.current.Value; } }
|
||
|
|
}
|
||
|
|
|
||
|
|
private static string Rtf( object o) { return ((XPathNavigator)o).Value; }
|
||
|
|
|
||
|
|
public override XPathResultType StaticType { get { return XPathResultType.Boolean; } }
|
||
|
|
|
||
|
|
public override void PrintQuery(XmlWriter w) {
|
||
|
|
w.WriteStartElement(this.GetType().Name);
|
||
|
|
w.WriteAttributeString("op", op.ToString());
|
||
|
|
opnd1.PrintQuery(w);
|
||
|
|
opnd2.PrintQuery(w);
|
||
|
|
w.WriteEndElement();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|