/*******************************************************************************
- * 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.TypeBinding;
public class UnaryExpression extends OperatorExpression {
-
+
public Expression expression;
+
public Constant optimizedBooleanConstant;
public UnaryExpression(Expression expression, int operator) {
this.bits |= operator << OperatorSHIFT; // encode operator
}
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo) {
+ public FlowInfo analyseCode(BlockScope currentScope,
+ FlowContext flowContext, FlowInfo flowInfo) {
+
if (((bits & OperatorMASK) >> OperatorSHIFT) == NOT) {
- return expression
- .analyseCode(currentScope, flowContext, flowInfo)
- .asNegatedCondition();
+ 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() {
- /**
- * 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 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);
+ return this.optimizedBooleanConstant == null ? this.constant
+ : this.optimizedBooleanConstant;
}
/**
- * Boolean operator code generation
- * Optimized operations are: &&, ||, <, <=, >, >=, &, |, ^
+ * 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 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;
}
int tableId;
switch ((bits & OperatorMASK) >> OperatorSHIFT) {
- case NOT :
- tableId = AND_AND;
- break;
- case TWIDDLE :
- tableId = LEFT_SHIFT;
- break;
- default :
- tableId = MINUS;
- } //+ and - cases
+ 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];
- expression.implicitConversion = result >>> 12;
- bits |= result & 0xF;
+ // (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.typeBinding = BooleanBinding;
- break;
- case T_byte :
- this.typeBinding = ByteBinding;
- break;
- case T_char :
- this.typeBinding = CharBinding;
- break;
- case T_double :
- this.typeBinding = DoubleBinding;
- break;
- case T_float :
- this.typeBinding = FloatBinding;
- break;
- case T_int :
- this.typeBinding = IntBinding;
- break;
- case T_long :
- this.typeBinding = LongBinding;
- break;
- default : //error........
- constant = Constant.NotAConstant;
- if (expressionId != T_undefined)
- scope.problemReporter().invalidOperator(this, expressionTb);
- return null;
+ 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 (expression.constant != Constant.NotAConstant) {
- constant =
- Constant.computeConstantOperation(
- expression.constant,
- expressionId,
+ if (this.expression.constant != Constant.NotAConstant) {
+ this.constant = Constant.computeConstantOperation(
+ 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(); //$NON-NLS-1$
- }
-
- public void traverse(
- IAbstractSyntaxTreeVisitor visitor,
- BlockScope blockScope) {
+
+ return operatorToString() + " " + this.expression.toStringExpression(); //$NON-NLS-1$
+ }
+
+ public void traverse(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
+}
git://git.phpeclipse.com / phpeclipse.git / blobdiff