astnode.java

JDK1.4编译器后端

package AST;
import java.util.HashSet;import java.util.LinkedHashSet;import java.io.FileNotFoundException;import java.io.File;import java.util.*;import beaver.*;import java.util.ArrayList;import java.util.zip.*;import java.io.*;

// Generated with JastAdd II (http://jastadd.cs.lth.se) version R20080407

public class ASTNode<T extends ASTNode> extends beaver.Symbol  implements Cloneable, Iterable<T> {
    public void flushCache() {
    }
     @SuppressWarnings({"unchecked", "cast"})  public ASTNode<T> clone() throws CloneNotSupportedException {
        ASTNode node = (ASTNode)super.clone();
        node.in$Circle(false);
        node.is$Final(false);
    return node;
    }
     @SuppressWarnings({"unchecked", "cast"})  public ASTNode<T> copy() {
      try {
          ASTNode node = (ASTNode)clone();
          if(children != null) node.children = (ASTNode[])children.clone();
          return node;
      } catch (CloneNotSupportedException e) {
      }
      System.err.println("Error: Could not clone node of type " + getClass().getName() + "!");
      return null;
    }
     @SuppressWarnings({"unchecked", "cast"})  public ASTNode<T> fullCopy() {
        ASTNode res = (ASTNode)copy();
        for(int i = 0; i < getNumChildNoTransform(); i++) {
          ASTNode node = getChildNoTransform(i);
          if(node != null) node = node.fullCopy();
          res.setChild(node, i);
        }
        return res;
    }
    // Declared in AccessControl.jrag at line 125

    
  public void accessControl() {
  }

    // Declared in AnonymousClasses.jrag at line 136


  protected void collectExceptions(Collection c, ASTNode target) {
    for(int i = 0; i < getNumChild(); i++)
      getChild(i).collectExceptions(c, target);
  }

    // Declared in BranchTarget.jrag at line 45

  
  public void collectBranches(Collection c) {
    for(int i = 0; i < getNumChild(); i++)
      getChild(i).collectBranches(c);
  }

    // Declared in BranchTarget.jrag at line 151

  public Stmt branchTarget(Stmt branchStmt) {
    if(getParent() != null)
      return getParent().branchTarget(branchStmt);
    else
      return null;
  }

    // Declared in BranchTarget.jrag at line 191

  public void collectFinally(Stmt branchStmt, ArrayList list) {
    if(getParent() != null)
      getParent().collectFinally(branchStmt, list);
  }

    // Declared in DeclareBeforeUse.jrag at line 13

  public int varChildIndex(Block b) {
    ASTNode node = this;
    while(node.getParent().getParent() != b) {
      node = node.getParent();
    }
    return b.getStmtListNoTransform().getIndexOfChild(node);
  }

    // Declared in DeclareBeforeUse.jrag at line 31


  public int varChildIndex(TypeDecl t) {
    ASTNode node = this;
    while(node != null && node.getParent() != null && node.getParent().getParent() != t) {
      node = node.getParent();
    }
    if(node == null)
      return -1;
    return t.getBodyDeclListNoTransform().getIndexOfChild(node);
  }

    // Declared in DefiniteAssignment.jrag at line 12


  public void definiteAssignment() {
  }

    // Declared in DefiniteAssignment.jrag at line 451


  // 16.2.2 9th, 10th bullet
  protected boolean checkDUeverywhere(Variable v) {
    for(int i = 0; i < getNumChild(); i++)
      if(!getChild(i).checkDUeverywhere(v))
        return false;
    return true;
  }

    // Declared in DefiniteAssignment.jrag at line 561


  protected boolean isDescendantTo(ASTNode node) {
    if(this == node)
      return true;
    if(getParent() == null)
      return false;
    return getParent().isDescendantTo(node);
  }

    // Declared in ErrorCheck.jrag at line 12


  protected String sourceFile() {
    ASTNode node = this;
    while(node != null && !(node instanceof CompilationUnit))
      node = node.getParent();
    if(node == null)
      return "Unknown file";
    CompilationUnit u = (CompilationUnit)node;
    return u.relativeName();
  }

    // Declared in ErrorCheck.jrag at line 34


  // set start and end position to the same as the argument and return self
  public ASTNode setLocation(ASTNode node) {
    setStart(node.getStart());
    setEnd(node.getEnd());
    return this;
  }

    // Declared in ErrorCheck.jrag at line 40


  public ASTNode setStart(int i) {
    start = i;
    return this;
  }

    // Declared in ErrorCheck.jrag at line 44

  public int start() {
    return start;
  }

    // Declared in ErrorCheck.jrag at line 47

  public ASTNode setEnd(int i) {
    end = i;
    return this;
  }

    // Declared in ErrorCheck.jrag at line 51

  public int end() {
    return end;
  }

    // Declared in ErrorCheck.jrag at line 57




  public String location() {
    return "" + lineNumber();
  }

    // Declared in ErrorCheck.jrag at line 60

  public String errorPrefix() {
    return sourceFile() + ":" + location() + ":\n" + "  *** Semantic Error: ";
  }

    // Declared in ErrorCheck.jrag at line 63

  public String warningPrefix() {
    return sourceFile() + ":" + location() + ":\n" + "  *** WARNING: ";
  }

    // Declared in ErrorCheck.jrag at line 173


  protected void error(String s) {
    ASTNode node = this;
    while(node != null && !(node instanceof CompilationUnit))
      node = node.getParent();
    CompilationUnit cu = (CompilationUnit)node;
    if(getNumChild() == 0 && getStart() != 0 && getEnd() != 0) {  
      int line = getLine(getStart());
      int column = getColumn(getStart());
      int endLine = getLine(getEnd());
      int endColumn = getColumn(getEnd());
      cu.errors.add(new Problem(sourceFile(), s, line, column, endLine, endColumn, Problem.Severity.ERROR, Problem.Kind.SEMANTIC));
    }
    else
      cu.errors.add(new Problem(sourceFile(), s, lineNumber(), Problem.Severity.ERROR, Problem.Kind.SEMANTIC));
  }

    // Declared in ErrorCheck.jrag at line 189


  protected void warning(String s) {
    ASTNode node = this;
    while(node != null && !(node instanceof CompilationUnit))
      node = node.getParent();
    CompilationUnit cu = (CompilationUnit)node;
    cu.warnings.add(new Problem(sourceFile(), "WARNING: " + s, lineNumber(), Problem.Severity.WARNING));
  }

    // Declared in ErrorCheck.jrag at line 197

  
  public void collectErrors() {
    nameCheck();
    typeCheck();
    accessControl();
    exceptionHandling();
    checkUnreachableStmt();
    definiteAssignment();
    checkModifiers();
    for(int i = 0; i < getNumChild(); i++) {
      getChild(i).collectErrors();
    }
  }

    // Declared in ExceptionHandling.jrag at line 40

  
  public void exceptionHandling() {
  }

    // Declared in ExceptionHandling.jrag at line 196


  protected boolean reachedException(TypeDecl type) {
    for(int i = 0; i < getNumChild(); i++)
      if(getChild(i).reachedException(type))
        return true;
    return false;
  }

    // Declared in LookupMethod.jrag at line 54

  public static Collection removeInstanceMethods(Collection c) {
    c = new LinkedList(c);
    for(Iterator iter = c.iterator(); iter.hasNext(); ) {
      MethodDecl m = (MethodDecl)iter.next();
      if(!m.isStatic())
        iter.remove();
    }
    return c;
  }

    // Declared in LookupMethod.jrag at line 342

  protected static void putSimpleSetElement(HashMap map, Object key, Object value) {
    SimpleSet set = (SimpleSet)map.get(key);
    if(set == null) set = SimpleSet.emptySet;
    map.put(key, set.add(value));
  }

    // Declared in LookupVariable.jrag at line 177


  public SimpleSet removeInstanceVariables(SimpleSet oldSet) {
    SimpleSet newSet = SimpleSet.emptySet;
    for(Iterator iter = oldSet.iterator(); iter.hasNext(); ) {
      Variable v = (Variable)iter.next();
      if(!v.isInstanceVariable())
        newSet = newSet.add(v);
    }
    return newSet;
  }

    // Declared in Modifiers.jrag at line 11

  void checkModifiers() {
  }

    // Declared in NameCheck.jrag at line 11

  public void nameCheck() {
  }

    // Declared in NameCheck.jrag at line 14


  public TypeDecl extractSingleType(SimpleSet c) {
    if(c.size() != 1)
      return null;
    return (TypeDecl)c.iterator().next();
  }

    // Declared in PrettyPrint.jadd at line 13

  // Helper for indentation
  
  protected static int indent = 0;

    // Declared in PrettyPrint.jadd at line 15

  
  public static String indent() {
    StringBuffer s = new StringBuffer();
    for(int i = 0; i < indent; i++) {
      s.append("  ");
    }
    return s.toString();
  }

    // Declared in PrettyPrint.jadd at line 25


  // Default output
  
  public String toString() {
    StringBuffer s = new StringBuffer();
    toString(s);
    return s.toString().trim();
  }

    // Declared in PrettyPrint.jadd at line 31

  
  public void toString(StringBuffer s) {
    throw new Error("Operation toString(StringBuffer s) not implemented for " + getClass().getName());
  }

    // Declared in PrettyPrint.jadd at line 749


  // dump the AST to standard output

  public String dumpTree() {
    StringBuffer s = new StringBuffer();
    dumpTree(s, 0);
    return s.toString();
  }

    // Declared in PrettyPrint.jadd at line 755


  public void dumpTree(StringBuffer s, int j) {
    for(int i = 0; i < j; i++) {
      s.append("  ");
    }
    s.append(dumpString() + "\n");
    for(int i = 0; i < getNumChild(); i++)
      getChild(i).dumpTree(s, j + 1);
  }

    // Declared in PrettyPrint.jadd at line 764


  public String dumpTreeNoRewrite() {
    StringBuffer s = new StringBuffer();
    dumpTreeNoRewrite(s, 0);
    return s.toString();
  }

    // Declared in PrettyPrint.jadd at line 769

  protected void dumpTreeNoRewrite(StringBuffer s, int indent) {
    for(int i = 0; i < indent; i++)
      s.append("  ");
    s.append(dumpString());
    s.append("\n");
    for(int i = 0; i < getNumChildNoTransform(); i++) {
      getChildNoTransform(i).dumpTreeNoRewrite(s, indent+1);
    }
  }

    // Declared in PrimitiveTypes.jrag at line 11

  protected static final String PRIMITIVE_PACKAGE_NAME = "@primitive";

    // Declared in TypeCheck.jrag at line 12

  public void typeCheck() {
  }

    // Declared in UnreachableStatements.jrag at line 12


  void checkUnreachableStmt() {
  }

    // Declared in CodeGeneration.jrag at line 11

  public void setSourceLineNumber(int i) {
    setStart(ASTNode.makePosition(i, 1));
  }

    // Declared in CodeGeneration.jrag at line 30


  protected int findFirstSourceLineNumber() {
    if(getStart() != 0)
      return getLine(getStart());
    for(int i = 0; i < getNumChild(); i++) {
      int num = getChild(i).findFirstSourceLineNumber();
      if(num != -1)
        return num;
    }
    return -1;
  }

    // Declared in CodeGeneration.jrag at line 591


  public void error() {
    Throwable t = new Throwable();
    StackTraceElement[] ste = new Throwable().getStackTrace();