dostmt.java

来自「JDK1.4编译器后端」· Java 代码 · 共 479 行 · 第 1/2 页

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.*;


public class DoStmt extends BranchTargetStmt implements Cloneable {
    public void flushCache() {
        super.flushCache();
        targetOf_ContinueStmt_values = null;
        targetOf_BreakStmt_values = null;
        isDAafter_Variable_values = null;
        isDUafter_Variable_values = null;
        isDUbeforeCondition_Variable_visited = new java.util.HashMap(4);
        canCompleteNormally_computed = false;
        begin_label_computed = false;
        cond_label_computed = false;
        end_label_computed = false;
    }
     @SuppressWarnings({"unchecked", "cast"})  public DoStmt clone() throws CloneNotSupportedException {
        DoStmt node = (DoStmt)super.clone();
        node.targetOf_ContinueStmt_values = null;
        node.targetOf_BreakStmt_values = null;
        node.isDAafter_Variable_values = null;
        node.isDUafter_Variable_values = null;
        node.isDUbeforeCondition_Variable_visited = new java.util.HashMap(4);
        node.canCompleteNormally_computed = false;
        node.begin_label_computed = false;
        node.cond_label_computed = false;
        node.end_label_computed = false;
        node.in$Circle(false);
        node.is$Final(false);
    return node;
    }
     @SuppressWarnings({"unchecked", "cast"})  public DoStmt copy() {
      try {
          DoStmt node = (DoStmt)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 DoStmt fullCopy() {
        DoStmt res = (DoStmt)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 PrettyPrint.jadd at line 607


  public void toString(StringBuffer s) {
    s.append("do ");
    getStmt().toString(s);
    s.append("while(");
    getCondition().toString(s);
    s.append(");\n");
  }

    // Declared in TypeCheck.jrag at line 328

  public void typeCheck() {
    TypeDecl cond = getCondition().type();
    if(!cond.isBoolean()) {
      error("the type of \"" + getCondition() + "\" is " + cond.name() + " which is not boolean");
    }
  }

    // Declared in CreateBCode.jrag at line 1343


  public void createBCode(CodeGeneration gen) {
    super.createBCode(gen);
    gen.addLabel(begin_label());
    getStmt().createBCode(gen);
    gen.addLabel(cond_label());
    getCondition().emitEvalBranch(gen);
    gen.addLabel(end_label());
  }

    // Declared in java.ast at line 3
    // Declared in java.ast line 212

    public DoStmt() {
        super();


    }

    // Declared in java.ast at line 10


    // Declared in java.ast line 212
    public DoStmt(Stmt p0, Expr p1) {
        setChild(p0, 0);
        setChild(p1, 1);
    }

    // Declared in java.ast at line 15


  protected int numChildren() {
    return 2;
  }

    // Declared in java.ast at line 18

  public boolean mayHaveRewrite() { return false; }

    // Declared in java.ast at line 2
    // Declared in java.ast line 212
    public void setStmt(Stmt node) {
        setChild(node, 0);
    }

    // Declared in java.ast at line 5

    public Stmt getStmt() {
        return (Stmt)getChild(0);
    }

    // Declared in java.ast at line 9


    public Stmt getStmtNoTransform() {
        return (Stmt)getChildNoTransform(0);
    }

    // Declared in java.ast at line 2
    // Declared in java.ast line 212
    public void setCondition(Expr node) {
        setChild(node, 1);
    }

    // Declared in java.ast at line 5

    public Expr getCondition() {
        return (Expr)getChild(1);
    }

    // Declared in java.ast at line 9


    public Expr getConditionNoTransform() {
        return (Expr)getChildNoTransform(1);
    }

    protected java.util.Map targetOf_ContinueStmt_values;
    // Declared in BranchTarget.jrag at line 71
 @SuppressWarnings({"unchecked", "cast"})     public boolean targetOf(ContinueStmt stmt) {
        Object _parameters = stmt;
if(targetOf_ContinueStmt_values == null) targetOf_ContinueStmt_values = new java.util.HashMap(4);
        if(targetOf_ContinueStmt_values.containsKey(_parameters))
            return ((Boolean)targetOf_ContinueStmt_values.get(_parameters)).booleanValue();
        int num = boundariesCrossed;
        boolean isFinal = this.is$Final();
        boolean targetOf_ContinueStmt_value = targetOf_compute(stmt);
        if(isFinal && num == boundariesCrossed)
            targetOf_ContinueStmt_values.put(_parameters, Boolean.valueOf(targetOf_ContinueStmt_value));
        return targetOf_ContinueStmt_value;
    }

    private boolean targetOf_compute(ContinueStmt stmt) {  return !stmt.hasLabel();  }

    protected java.util.Map targetOf_BreakStmt_values;
    // Declared in BranchTarget.jrag at line 79
 @SuppressWarnings({"unchecked", "cast"})     public boolean targetOf(BreakStmt stmt) {
        Object _parameters = stmt;
if(targetOf_BreakStmt_values == null) targetOf_BreakStmt_values = new java.util.HashMap(4);
        if(targetOf_BreakStmt_values.containsKey(_parameters))
            return ((Boolean)targetOf_BreakStmt_values.get(_parameters)).booleanValue();
        int num = boundariesCrossed;
        boolean isFinal = this.is$Final();
        boolean targetOf_BreakStmt_value = targetOf_compute(stmt);
        if(isFinal && num == boundariesCrossed)
            targetOf_BreakStmt_values.put(_parameters, Boolean.valueOf(targetOf_BreakStmt_value));
        return targetOf_BreakStmt_value;
    }

    private boolean targetOf_compute(BreakStmt stmt) {  return !stmt.hasLabel();  }

    // Declared in DefiniteAssignment.jrag at line 590
 @SuppressWarnings({"unchecked", "cast"})     public boolean isDAafter(Variable v) {
        Object _parameters = v;
if(isDAafter_Variable_values == null) isDAafter_Variable_values = new java.util.HashMap(4);
        if(isDAafter_Variable_values.containsKey(_parameters))
            return ((Boolean)isDAafter_Variable_values.get(_parameters)).booleanValue();
        int num = boundariesCrossed;
        boolean isFinal = this.is$Final();
        boolean isDAafter_Variable_value = isDAafter_compute(v);
        if(isFinal && num == boundariesCrossed)
            isDAafter_Variable_values.put(_parameters, Boolean.valueOf(isDAafter_Variable_value));
        return isDAafter_Variable_value;
    }

    private boolean isDAafter_compute(Variable v) {
    if(!getCondition().isDAafterFalse(v))
      return false;
    for(Iterator iter = targetBreaks().iterator(); iter.hasNext(); ) {
      BreakStmt stmt = (BreakStmt)iter.next();
      if(!stmt.isDAafterReachedFinallyBlocks(v))
        return false;
    }
    return true;
  }

    // Declared in DefiniteAssignment.jrag at line 1072
 @SuppressWarnings({"unchecked", "cast"})     public boolean isDUafter(Variable v) {
        Object _parameters = v;
if(isDUafter_Variable_values == null) isDUafter_Variable_values = new java.util.HashMap(4);
        if(isDUafter_Variable_values.containsKey(_parameters))
            return ((Boolean)isDUafter_Variable_values.get(_parameters)).booleanValue();
        int num = boundariesCrossed;
        boolean isFinal = this.is$Final();
        boolean isDUafter_Variable_value = isDUafter_compute(v);
        if(isFinal && num == boundariesCrossed)
            isDUafter_Variable_values.put(_parameters, Boolean.valueOf(isDUafter_Variable_value));
        return isDUafter_Variable_value;
    }

    private boolean isDUafter_compute(Variable v) {
    if(!isDUbeforeCondition(v)) // start a circular evaluation here
      return false;
    if(!getCondition().isDUafterFalse(v))
      return false;
    for(Iterator iter = targetBreaks().iterator(); iter.hasNext(); ) {
      BreakStmt stmt = (BreakStmt)iter.next();
      if(!stmt.isDUafterReachedFinallyBlocks(v))
        return false;
    }
    return true;
  }

    protected java.util.Map isDUbeforeCondition_Variable_visited;
    protected java.util.Set isDUbeforeCondition_Variable_computed = new java.util.HashSet(4);
    protected java.util.Set isDUbeforeCondition_Variable_initialized = new java.util.HashSet(4);