+/***********************************************************************************************************************************
+ * 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.ASTVisitor;
+import net.sourceforge.phpdt.internal.compiler.flow.FlowContext;
+import net.sourceforge.phpdt.internal.compiler.flow.FlowInfo;
+import net.sourceforge.phpdt.internal.compiler.lookup.ArrayBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.BaseTypeBinding;
+import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope;
+import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding;
-/**
- * an array initializer.
- * array('a','b','c') or array('a' => 2,'b' = '3');
- * @author Matthieu Casanova
- */
public class ArrayInitializer extends Expression {
+ public Expression[] expressions;
- public ArrayVariableDeclaration[] vars;
+ public ArrayBinding binding; // the type of the { , , , }
- public ArrayInitializer(final ArrayVariableDeclaration[] vars,
- final int sourceStart,
- final int sourceEnd) {
- super(sourceStart, sourceEnd);
- this.vars = vars;
- }
+ /**
+ * ArrayInitializer constructor comment.
+ */
+ public ArrayInitializer() {
+ super();
+ }
- /**
- * Return the expression as String.
- * @return the expression
- */
- public String toStringExpression() {
- final StringBuffer buff = new StringBuffer("array(");
- for (int i = 0; i < vars.length; i++) {
- if (i != 0) {
- buff.append(",");
- }
- if (vars[i] != null) {
- buff.append(vars[i].toStringExpression());
- }
- }
- buff.append(")");
- return buff.toString();
- }
+ public FlowInfo analyseCode(BlockScope currentScope,
+ FlowContext flowContext, FlowInfo flowInfo) {
+ if (expressions != null) {
+ for (int i = 0, max = expressions.length; i < max; i++) {
+ flowInfo = expressions[i].analyseCode(currentScope,
+ flowContext, flowInfo).unconditionalInits();
+ }
+ }
+ return flowInfo;
+ }
- /**
- * Get the variables from outside (parameters, globals ...)
- */
- public void getOutsideVariable(final List list) {
- }
+ /**
+ * Code generation for a array initializer
+ */
+ // public void generateCode(BlockScope currentScope, CodeStream codeStream,
+ // boolean valueRequired) {
+ // // Flatten the values and compute the dimensions, by iterating in depth
+ // into nested array initializers
+ //
+ // int pc = codeStream.position;
+ // int expressionLength = (expressions == null) ? 0: expressions.length;
+ // codeStream.generateInlinedValue(expressionLength);
+ // codeStream.newArray(currentScope, binding);
+ // if (expressions != null) {
+ // // binding is an ArrayType, so I can just deal with the dimension
+ // int elementsTypeID = binding.dimensions > 1 ? -1 :
+ // binding.leafComponentType.id;
+ // for (int i = 0; i < expressionLength; i++) {
+ // Expression expr;
+ // if ((expr = expressions[i]).constant != NotAConstant) {
+ // switch (elementsTypeID) { // filter out initializations to default values
+ // case T_int :
+ // case T_short :
+ // case T_byte :
+ // case T_char :
+ // case T_long :
+ // if (expr.constant.longValue() != 0) {
+ // codeStream.dup();
+ // codeStream.generateInlinedValue(i);
+ // expr.generateCode(currentScope, codeStream, true);
+ // codeStream.arrayAtPut(elementsTypeID, false);
+ // }
+ // break;
+ // case T_float :
+ // case T_double :
+ // double constantValue = expr.constant.doubleValue();
+ // if (constantValue == -0.0 || constantValue != 0) {
+ // codeStream.dup();
+ // codeStream.generateInlinedValue(i);
+ // expr.generateCode(currentScope, codeStream, true);
+ // codeStream.arrayAtPut(elementsTypeID, false);
+ // }
+ // break;
+ // case T_boolean :
+ // if (expr.constant.booleanValue() != false) {
+ // codeStream.dup();
+ // codeStream.generateInlinedValue(i);
+ // expr.generateCode(currentScope, codeStream, true);
+ // codeStream.arrayAtPut(elementsTypeID, false);
+ // }
+ // break;
+ // default :
+ // if (!(expr instanceof NullLiteral)) {
+ // codeStream.dup();
+ // codeStream.generateInlinedValue(i);
+ // expr.generateCode(currentScope, codeStream, true);
+ // codeStream.arrayAtPut(elementsTypeID, false);
+ // }
+ // }
+ // } else if (!(expr instanceof NullLiteral)) {
+ // codeStream.dup();
+ // codeStream.generateInlinedValue(i);
+ // expr.generateCode(currentScope, codeStream, true);
+ // codeStream.arrayAtPut(elementsTypeID, false);
+ // }
+ // }
+ // }
+ // if (!valueRequired) {
+ // codeStream.pop();
+ // }
+ // codeStream.recordPositionsFrom(pc, this.sourceStart);
+ // }
+ public StringBuffer printExpression(int indent, StringBuffer output) {
- /**
- * get the modified variables.
- */
- public void getModifiedVariable(final List list) {
- for (int i = 0; i < vars.length; i++) {
- if (vars[i] != null) {
- vars[i].getModifiedVariable(list);
- }
- }
- }
+ output.append('{');
+ if (expressions != null) {
+ int j = 20;
+ for (int i = 0; i < expressions.length; i++) {
+ if (i > 0)
+ output.append(", "); //$NON-NLS-1$
+ expressions[i].printExpression(0, output);
+ j--;
+ if (j == 0) {
+ output.append('\n');
+ printIndent(indent + 1, output);
+ j = 20;
+ }
+ }
+ }
+ return output.append('}');
+ }
- /**
- * Get the variables used.
- */
- public void getUsedVariable(final List list) {
- for (int i = 0; i < vars.length; i++) {
- if (vars[i] != null) {
- vars[i].getUsedVariable(list);
- }
- }
- }
-}
+ public TypeBinding resolveTypeExpecting(BlockScope scope,
+ TypeBinding expectedTb) {
+ // Array initializers can only occur on the right hand side of an
+ // assignment
+ // expression, therefore the expected type contains the valid
+ // information
+ // concerning the type that must be enforced by the elements of the
+ // array initializer.
+
+ // this method is recursive... (the test on isArrayType is the stop
+ // case)
+
+ constant = NotAConstant;
+ if (expectedTb.isArrayType()) {
+ binding = (ArrayBinding) expectedTb;
+ if (expressions == null)
+ return binding;
+ TypeBinding expectedElementsTb = binding.elementsType(scope);
+ if (expectedElementsTb.isBaseType()) {
+ for (int i = 0, length = expressions.length; i < length; i++) {
+ Expression expression = expressions[i];
+ TypeBinding expressionTb = (expression instanceof ArrayInitializer) ? expression
+ .resolveTypeExpecting(scope, expectedElementsTb)
+ : expression.resolveType(scope);
+ if (expressionTb == null)
+ return null;
+
+ // Compile-time conversion required?
+ if (expression.isConstantValueOfTypeAssignableToType(
+ expressionTb, expectedElementsTb)) {
+ expression.implicitWidening(expectedElementsTb,
+ expressionTb);
+ } else if (BaseTypeBinding.isWidening(
+ expectedElementsTb.id, expressionTb.id)) {
+ expression.implicitWidening(expectedElementsTb,
+ expressionTb);
+ } else {
+ scope.problemReporter()
+ .typeMismatchErrorActualTypeExpectedType(
+ expression, expressionTb,
+ expectedElementsTb);
+ return null;
+ }
+ }
+ } else {
+ for (int i = 0, length = expressions.length; i < length; i++)
+ if (expressions[i].resolveTypeExpecting(scope,
+ expectedElementsTb) == null)
+ return null;
+ }
+ return binding;
+ }
+
+ // infer initializer type for error reporting based on first element
+ TypeBinding leafElementType = null;
+ int dim = 1;
+ if (expressions == null) {
+ leafElementType = scope.getJavaLangObject();
+ } else {
+ Expression currentExpression = expressions[0];
+ while (currentExpression != null
+ && currentExpression instanceof ArrayInitializer) {
+ dim++;
+ Expression[] subExprs = ((ArrayInitializer) currentExpression).expressions;
+ if (subExprs == null) {
+ leafElementType = scope.getJavaLangObject();
+ currentExpression = null;
+ break;
+ }
+ currentExpression = ((ArrayInitializer) currentExpression).expressions[0];
+ }
+ if (currentExpression != null) {
+ leafElementType = currentExpression.resolveType(scope);
+ }
+ }
+ if (leafElementType != null) {
+ TypeBinding probableTb = scope.createArray(leafElementType, dim);
+ scope.problemReporter().typeMismatchErrorActualTypeExpectedType(
+ this, probableTb, expectedTb);
+ }
+ return null;
+ }
+
+ public String toStringExpression() {
+
+ String s = "{"; //$NON-NLS-1$
+ if (expressions != null) {
+ int j = 20;
+ for (int i = 0; i < expressions.length; i++) {
+ s = s + expressions[i].toStringExpression() + ","; //$NON-NLS-1$
+ j--;
+ if (j == 0) {
+ s = s + "\n ";j = 20;}}}; //$NON-NLS-1$
+ s = s + "}"; //$NON-NLS-1$
+ return s;
+ }
+
+ public void traverse(ASTVisitor visitor, BlockScope scope) {
+ if (visitor.visit(this, scope)) {
+ if (expressions != null) {
+ int expressionsLength = expressions.length;
+ for (int i = 0; i < expressionsLength; i++)
+ expressions[i].traverse(visitor, scope);
+ }
+ }
+ visitor.endVisit(this, scope);
+ }
+}
\ No newline at end of file
git://git.phpeclipse.com / phpeclipse.git / blobdiff