/*******************************************************************************
- * Copyright (c) 2000, 2001, 2002 International Business Machines Corp. and others.
+ * 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 v0.5
+ * 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-v05.html
+ * http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
- ******************************************************************************/
+ *******************************************************************************/
package net.sourceforge.phpdt.internal.compiler.ast;
-import net.sourceforge.phpdt.internal.compiler.IAbstractSyntaxTreeVisitor;
-import net.sourceforge.phpdt.internal.compiler.codegen.CodeStream;
-import net.sourceforge.phpdt.internal.compiler.codegen.Label;
+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;
BlockScope currentScope,
FlowContext flowContext,
FlowInfo flowInfo) {
+
if (((bits & OperatorMASK) >> OperatorSHIFT) == NOT) {
- return expression
+ return this.expression
.analyseCode(currentScope, flowContext, flowInfo)
.asNegatedCondition();
} else {
- return expression.analyseCode(currentScope, flowContext, flowInfo);
+ return this.expression.analyseCode(currentScope, flowContext, flowInfo);
}
}
- public Constant conditionalConstant() {
- return optimizedBooleanConstant == null ? constant : optimizedBooleanConstant;
+ public Constant optimizedBooleanConstant() {
+
+ return this.optimizedBooleanConstant == null
+ ? this.constant
+ : this.optimizedBooleanConstant;
}
/**
* Code generation for an unary operation
*
- * @param currentScope org.eclipse.jdt.internal.compiler.lookup.BlockScope
- * @param codeStream org.eclipse.jdt.internal.compiler.codegen.CodeStream
+ * @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 (constant != Constant.NotAConstant) {
- // inlined value
- if (valueRequired) {
- codeStream.generateConstant(constant, implicitConversion);
- }
- codeStream.recordPositionsFrom(pc, this.sourceStart);
- return;
- }
- switch ((bits & OperatorMASK) >> OperatorSHIFT) {
- case NOT :
- switch (expression.implicitConversion >> 4) /* runtime type */ {
- case T_boolean :
- // ! <boolean>
- // Generate code for the condition
- 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 (expression.implicitConversion >> 4 /* runtime */
- ) {
- case T_int :
- // ~int
- expression.generateCode(currentScope, codeStream, valueRequired);
- if (valueRequired) {
- codeStream.iconst_m1();
- codeStream.ixor();
- }
- break;
- case T_long :
- expression.generateCode(currentScope, codeStream, valueRequired);
- if (valueRequired) {
- codeStream.ldc2_w(-1L);
- codeStream.lxor();
- }
- }
- break;
- case MINUS :
- // - <num>
- if (constant != NotAConstant) {
- if (valueRequired) {
- switch (expression.implicitConversion >> 4 /* runtime */
- ) {
- case T_int :
- codeStream.generateInlinedValue(constant.intValue() * -1);
- break;
- case T_float :
- codeStream.generateInlinedValue(constant.floatValue() * -1.0f);
- break;
- case T_long :
- codeStream.generateInlinedValue(constant.longValue() * -1L);
- break;
- case T_double :
- codeStream.generateInlinedValue(constant.doubleValue() * -1.0);
- }
- }
- } else {
- 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 :
- expression.generateCode(currentScope, codeStream, valueRequired);
- }
- if (valueRequired) {
- codeStream.generateImplicitConversion(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 ((constant != Constant.NotAConstant) && (constant.typeID() == T_boolean)) {
- super.generateOptimizedBoolean(
- currentScope,
- codeStream,
- trueLabel,
- falseLabel,
- valueRequired);
- return;
- }
- if (((bits & OperatorMASK) >> OperatorSHIFT) == NOT) {
- expression.generateOptimizedBoolean(
- currentScope,
- codeStream,
- falseLabel,
- trueLabel,
- valueRequired);
- } else {
- super.generateOptimizedBoolean(
- currentScope,
- codeStream,
- trueLabel,
- falseLabel,
- valueRequired);
- }
- }
+// 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 expressionTb = expression.resolveType(scope);
- if (expressionTb == null) {
- constant = NotAConstant;
+
+ TypeBinding expressionType = this.expression.resolveType(scope);
+ if (expressionType == null) {
+ this.constant = NotAConstant;
return null;
}
- int expressionId = expressionTb.id;
+ int expressionId = expressionType.id;
if (expressionId > 15) {
- constant = NotAConstant;
- scope.problemReporter().invalidOperator(this, expressionTb);
+ this.constant = NotAConstant;
+ scope.problemReporter().invalidOperator(this, expressionType);
return null;
}
// 0000 0000 0000 0000 0000
// <<16 <<12 <<8 <<4 <<0
int result = ResolveTypeTables[tableId][(expressionId << 4) + expressionId];
- expression.implicitConversion = result >>> 12;
- bits |= result & 0xF;
+ this.expression.implicitConversion = result >>> 12;
+ this.bits |= result & 0xF;
switch (result & 0xF) { // only switch on possible result type.....
case T_boolean :
- this.typeBinding = BooleanBinding;
+ this.resolvedType = BooleanBinding;
break;
case T_byte :
- this.typeBinding = ByteBinding;
+ this.resolvedType = ByteBinding;
break;
case T_char :
- this.typeBinding = CharBinding;
+ this.resolvedType = CharBinding;
break;
case T_double :
- this.typeBinding = DoubleBinding;
+ this.resolvedType = DoubleBinding;
break;
case T_float :
- this.typeBinding = FloatBinding;
+ this.resolvedType = FloatBinding;
break;
case T_int :
- this.typeBinding = IntBinding;
+ this.resolvedType = IntBinding;
break;
case T_long :
- this.typeBinding = LongBinding;
+ this.resolvedType = LongBinding;
break;
default : //error........
- constant = Constant.NotAConstant;
+ this.constant = Constant.NotAConstant;
if (expressionId != T_undefined)
- scope.problemReporter().invalidOperator(this, expressionTb);
+ scope.problemReporter().invalidOperator(this, expressionType);
return null;
}
// compute the constant when valid
- if (expression.constant != Constant.NotAConstant) {
- constant =
+ if (this.expression.constant != Constant.NotAConstant) {
+ this.constant =
Constant.computeConstantOperation(
- expression.constant,
+ this.expression.constant,
expressionId,
(bits & OperatorMASK) >> OperatorSHIFT);
} else {
- constant = Constant.NotAConstant;
+ this.constant = Constant.NotAConstant;
if (((bits & OperatorMASK) >> OperatorSHIFT) == NOT) {
- Constant cst = expression.conditionalConstant();
- if (cst.typeID() == T_boolean)
- optimizedBooleanConstant = Constant.fromValue(!cst.booleanValue());
+ Constant cst = expression.optimizedBooleanConstant();
+ if (cst != Constant.NotAConstant)
+ this.optimizedBooleanConstant = Constant.fromValue(!cst.booleanValue());
}
}
- return this.typeBinding;
+ 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() + " " + expression.toStringExpression(); //$NON-NLS-1$
+
+ return operatorToString() + " " + this.expression.toStringExpression(); //$NON-NLS-1$
}
public void traverse(
- IAbstractSyntaxTreeVisitor visitor,
+ ASTVisitor visitor,
BlockScope blockScope) {
+
if (visitor.visit(this, blockScope)) {
- expression.traverse(visitor, blockScope);
+ this.expression.traverse(visitor, blockScope);
}
visitor.endVisit(this, blockScope);
}
-}
\ No newline at end of file
+}
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