+/*******************************************************************************
+ * 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.phpdt.internal.compiler.ast;
-import java.util.List;
+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;
-/**
- * Here is the Superclass of the Literal expressions.
- * @author Matthieu Casanova
- */
public abstract class Literal extends Expression {
- /**
- * Create a Literal.
- * @param sourceStart starting offset
- * @param sourceEnd ending offset
- */
- protected Literal(final int sourceStart, final int sourceEnd) {
- super(sourceStart, sourceEnd);
- }
-
- /**
- * Get the variables from outside (parameters, globals ...)
- *
- * @param list the list where we will put variables
- */
- public final void getOutsideVariable(final List list) {}
-
- /**
- * get the modified variables.
- *
- * @param list the list where we will put variables
- */
- public final void getModifiedVariable(final List list) {}
-
- /**
- * Get the variables used.
- *
- * @param list the list where we will put variables
- */
- public void getUsedVariable(final List list) {}
+ public Literal(int s, int e) {
+ sourceStart = s;
+ sourceEnd = e;
+ }
+
+ public FlowInfo analyseCode(BlockScope currentScope,
+ FlowContext flowContext, FlowInfo flowInfo) {
+ return flowInfo;
+ }
+
+ public abstract void computeConstant();
+
+ // ON ERROR constant STAYS NULL
+ public abstract TypeBinding literalType(BlockScope scope);
+
+ public StringBuffer printExpression(int indent, StringBuffer output) {
+
+ return output.append(source());
+ }
+
+ public TypeBinding resolveType(BlockScope scope) {
+ // compute the real value, which must range its type's range
+
+ computeConstant();
+ if (constant == null) {
+ scope.problemReporter().constantOutOfRange(this);
+ constant = Constant.NotAConstant;
+ return null;
+ }
+ this.resolvedType = literalType(scope);
+ return this.resolvedType;
+ }
+
+ public abstract char[] source();
}