+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2003 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package net.sourceforge.phpeclipse.internal.compiler.ast;
-
-import net.sourceforge.phpdt.internal.compiler.ASTVisitor;
-import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
-import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
-import net.sourceforge.phpdt.internal.compiler.impl.Constant;
-import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
-import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
-
-
-public class UnaryExpression extends OperatorExpression {
-
- public Expression expression;
- public Constant optimizedBooleanConstant;
-
- public UnaryExpression(Expression expression, int operator) {
- this.expression = expression;
- this.bits |= operator << OperatorSHIFT; // encode operator
- }
-
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo) {
-
- if (((bits & OperatorMASK) >> OperatorSHIFT) == NOT) {
- return this.expression
- .analyseCode(currentScope, flowContext, flowInfo)
- .asNegatedCondition();
- } else {
- return this.expression.analyseCode(currentScope, flowContext, flowInfo);
- }
- }
-
- public Constant optimizedBooleanConstant() {
-
- return this.optimizedBooleanConstant == null
- ? this.constant
- : this.optimizedBooleanConstant;
- }
-
- /**
- * Code generation for an unary operation
- *
- * @param currentScope net.sourceforge.phpdt.internal.compiler.lookup.BlockScope
- * @param codeStream net.sourceforge.phpdt.internal.compiler.codegen.CodeStream
- * @param valueRequired boolean
- */
-// public void generateCode(
-// BlockScope currentScope,
-// CodeStream codeStream,
-// boolean valueRequired) {
-//
-// int pc = codeStream.position;
-// Label falseLabel, endifLabel;
-// if (this.constant != Constant.NotAConstant) {
-// // inlined value
-// if (valueRequired) {
-// codeStream.generateConstant(this.constant, this.implicitConversion);
-// }
-// codeStream.recordPositionsFrom(pc, this.sourceStart);
-// return;
-// }
-// switch ((bits & OperatorMASK) >> OperatorSHIFT) {
-// case NOT :
-// switch (this.expression.implicitConversion >> 4) /* runtime type */ {
-// case T_boolean :
-// // ! <boolean>
-// // Generate code for the condition
-// this.expression.generateOptimizedBoolean(
-// currentScope,
-// codeStream,
-// null,
-// (falseLabel = new Label(codeStream)),
-// valueRequired);
-// if (valueRequired) {
-// codeStream.iconst_0();
-// if (falseLabel.hasForwardReferences()) {
-// codeStream.goto_(endifLabel = new Label(codeStream));
-// codeStream.decrStackSize(1);
-// falseLabel.place();
-// codeStream.iconst_1();
-// endifLabel.place();
-// }
-// } else { // 6596: if (!(a && b)){} - must still place falseLabel
-// falseLabel.place();
-// }
-// break;
-// }
-// break;
-// case TWIDDLE :
-// switch (this.expression.implicitConversion >> 4 /* runtime */
-// ) {
-// case T_int :
-// // ~int
-// this.expression.generateCode(currentScope, codeStream, valueRequired);
-// if (valueRequired) {
-// codeStream.iconst_m1();
-// codeStream.ixor();
-// }
-// break;
-// case T_long :
-// this.expression.generateCode(currentScope, codeStream, valueRequired);
-// if (valueRequired) {
-// codeStream.ldc2_w(-1L);
-// codeStream.lxor();
-// }
-// }
-// break;
-// case MINUS :
-// // - <num>
-// if (this.constant != NotAConstant) {
-// if (valueRequired) {
-// switch (this.expression.implicitConversion >> 4){ /* runtime */
-// case T_int :
-// codeStream.generateInlinedValue(this.constant.intValue() * -1);
-// break;
-// case T_float :
-// codeStream.generateInlinedValue(this.constant.floatValue() * -1.0f);
-// break;
-// case T_long :
-// codeStream.generateInlinedValue(this.constant.longValue() * -1L);
-// break;
-// case T_double :
-// codeStream.generateInlinedValue(this.constant.doubleValue() * -1.0);
-// }
-// }
-// } else {
-// this.expression.generateCode(currentScope, codeStream, valueRequired);
-// if (valueRequired) {
-// switch (expression.implicitConversion >> 4){ /* runtime type */
-// case T_int :
-// codeStream.ineg();
-// break;
-// case T_float :
-// codeStream.fneg();
-// break;
-// case T_long :
-// codeStream.lneg();
-// break;
-// case T_double :
-// codeStream.dneg();
-// }
-// }
-// }
-// break;
-// case PLUS :
-// this.expression.generateCode(currentScope, codeStream, valueRequired);
-// }
-// if (valueRequired) {
-// codeStream.generateImplicitConversion(this.implicitConversion);
-// }
-// codeStream.recordPositionsFrom(pc, this.sourceStart);
-// }
-//
-// /**
-// * Boolean operator code generation
-// * Optimized operations are: &&, ||, <, <=, >, >=, &, |, ^
-// */
-// public void generateOptimizedBoolean(
-// BlockScope currentScope,
-// CodeStream codeStream,
-// Label trueLabel,
-// Label falseLabel,
-// boolean valueRequired) {
-//
-// if ((this.constant != Constant.NotAConstant) && (this.constant.typeID() == T_boolean)) {
-// super.generateOptimizedBoolean(
-// currentScope,
-// codeStream,
-// trueLabel,
-// falseLabel,
-// valueRequired);
-// return;
-// }
-// if (((this.bits & OperatorMASK) >> OperatorSHIFT) == NOT) {
-// this.expression.generateOptimizedBoolean(
-// currentScope,
-// codeStream,
-// falseLabel,
-// trueLabel,
-// valueRequired);
-// } else {
-// super.generateOptimizedBoolean(
-// currentScope,
-// codeStream,
-// trueLabel,
-// falseLabel,
-// valueRequired);
-// }
-// }
-
- public TypeBinding resolveType(BlockScope scope) {
-
- TypeBinding expressionType = this.expression.resolveType(scope);
- if (expressionType == null) {
- this.constant = NotAConstant;
- return null;
- }
- int expressionId = expressionType.id;
- if (expressionId > 15) {
- this.constant = NotAConstant;
- scope.problemReporter().invalidOperator(this, expressionType);
- return null;
- }
-
- int tableId;
- switch ((bits & OperatorMASK) >> OperatorSHIFT) {
- case NOT :
- tableId = AND_AND;
- break;
- case TWIDDLE :
- tableId = LEFT_SHIFT;
- break;
- default :
- tableId = MINUS;
- } //+ and - cases
-
- // the code is an int
- // (cast) left Op (cast) rigth --> result
- // 0000 0000 0000 0000 0000
- // <<16 <<12 <<8 <<4 <<0
- int result = ResolveTypeTables[tableId][(expressionId << 4) + expressionId];
- this.expression.implicitConversion = result >>> 12;
- this.bits |= result & 0xF;
- switch (result & 0xF) { // only switch on possible result type.....
- case T_boolean :
- this.resolvedType = BooleanBinding;
- break;
- case T_byte :
- this.resolvedType = ByteBinding;
- break;
- case T_char :
- this.resolvedType = CharBinding;
- break;
- case T_double :
- this.resolvedType = DoubleBinding;
- break;
- case T_float :
- this.resolvedType = FloatBinding;
- break;
- case T_int :
- this.resolvedType = IntBinding;
- break;
- case T_long :
- this.resolvedType = LongBinding;
- break;
- default : //error........
- this.constant = Constant.NotAConstant;
- if (expressionId != T_undefined)
- scope.problemReporter().invalidOperator(this, expressionType);
- return null;
- }
- // compute the constant when valid
- if (this.expression.constant != Constant.NotAConstant) {
- this.constant =
- Constant.computeConstantOperation(
- this.expression.constant,
- expressionId,
- (bits & OperatorMASK) >> OperatorSHIFT);
- } else {
- this.constant = Constant.NotAConstant;
- if (((bits & OperatorMASK) >> OperatorSHIFT) == NOT) {
- Constant cst = expression.optimizedBooleanConstant();
- if (cst != Constant.NotAConstant)
- this.optimizedBooleanConstant = Constant.fromValue(!cst.booleanValue());
- }
- }
- return this.resolvedType;
- }
- public StringBuffer printExpressionNoParenthesis(int indent, StringBuffer output) {
-
- output.append(operatorToString()).append(' ');
- return this.expression.printExpression(0, output);
- }
- public String toStringExpressionNoParenthesis() {
-
- return operatorToString() + " " + this.expression.toStringExpression(); //$NON-NLS-1$
- }
-
- public void traverse(
- ASTVisitor visitor,
- BlockScope blockScope) {
-
- if (visitor.visit(this, blockScope)) {
- this.expression.traverse(visitor, blockScope);
- }
- visitor.endVisit(this, blockScope);
- }
-}
git://git.phpeclipse.com / phpeclipse.git / blobdiff