package net.sourceforge.phpdt.internal.compiler.ast;

import net.sourceforge.phpdt.internal.compiler.ast.AstNode;


/**
 * A Block is
 * {
 * statements
 * }.
 * @author Matthieu Casanova
 */
public class Block extends Statement {

  /** An array of statements inside the block. */
  public Statement[] statements;

  /**
   * Create a block.
   * @param statements the statements
   * @param sourceStart starting offset
   * @param sourceEnd ending offset
   */
  public Block(Statement[] statements,int sourceStart, int sourceEnd) {
    super(sourceStart, sourceEnd);
    this.statements = statements;
  }

  public boolean isEmptyBlock() {
    return statements == null;
  }

  public String toString(int tab) {
    final String s = AstNode.tabString(tab);
    final StringBuffer buff = new StringBuffer(s);
    if (this.statements == null) {
      buff.append("{\n"); //$NON-NLS-1$
      buff.append(s);
      buff.append("}"); //$NON-NLS-1$
      return s;
    }
    buff.append("{\n"); //$NON-NLS-1$
    buff.append(this.toStringStatements(tab));
    buff.append(s);
    buff.append("}"); //$NON-NLS-1$
    return s;
  }

  public String toStringStatements(int tab) {
    if (this.statements == null)
      return ""; //$NON-NLS-1$
    StringBuffer buffer = new StringBuffer();
    for (int i = 0; i < statements.length; i++) {
      buffer.append(statements[i].toString(tab + 1));
      if (statements[i] instanceof Block) {
        buffer.append("\n"); //$NON-NLS-1$
      } else {
        buffer.append(";\n"); //$NON-NLS-1$
      }
    }
    return buffer.toString();
  }
}