org.extendj.ast.NullLiteral Maven / Gradle / Ivy
/* This file was generated with JastAdd2 (http://jastadd.org) version 2.3.0 */
package org.extendj.ast;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.ArrayList;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;
import java.util.zip.*;
import java.io.*;
import java.io.BufferedInputStream;
import java.io.DataInputStream;
import org.jastadd.util.PrettyPrintable;
import org.jastadd.util.PrettyPrinter;
import java.io.FileNotFoundException;
import java.io.InputStream;
import org.jastadd.util.*;
import java.io.File;
import java.io.IOException;
import java.util.Set;
import beaver.*;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentSkipListMap;
/**
* Java null literal.
* @ast node
* @declaredat /home/jesper/git/extendj/java4/grammar/Literals.ast:29
* @astdecl NullLiteral : Literal;
* @production NullLiteral : {@link Literal};
*/
public class NullLiteral extends Literal implements Cloneable {
/**
* @aspect CodeGeneration
* @declaredat /home/jesper/git/extendj/java4/backend/CodeGeneration.jrag:145
*/
public void emitPushConstant(CodeGeneration gen) {
gen.ACONST_NULL();
}
/**
* @declaredat ASTNode:1
*/
public NullLiteral() {
super();
}
/**
* Initializes the child array to the correct size.
* Initializes List and Opt nta children.
* @apilevel internal
* @ast method
* @declaredat ASTNode:10
*/
public void init$Children() {
}
/**
* @declaredat ASTNode:12
*/
@ASTNodeAnnotation.Constructor(
name = {"LITERAL"},
type = {"String"},
kind = {"Token"}
)
public NullLiteral(String p0) {
setLITERAL(p0);
}
/**
* @declaredat ASTNode:20
*/
public NullLiteral(beaver.Symbol p0) {
setLITERAL(p0);
}
/** @apilevel low-level
* @declaredat ASTNode:24
*/
protected int numChildren() {
return 0;
}
/**
* @apilevel internal
* @declaredat ASTNode:30
*/
public boolean mayHaveRewrite() {
return false;
}
/** @apilevel internal
* @declaredat ASTNode:34
*/
public void flushAttrCache() {
super.flushAttrCache();
type_reset();
}
/** @apilevel internal
* @declaredat ASTNode:39
*/
public void flushCollectionCache() {
super.flushCollectionCache();
}
/** @apilevel internal
* @declaredat ASTNode:43
*/
public NullLiteral clone() throws CloneNotSupportedException {
NullLiteral node = (NullLiteral) super.clone();
return node;
}
/** @apilevel internal
* @declaredat ASTNode:48
*/
public NullLiteral copy() {
try {
NullLiteral node = (NullLiteral) clone();
node.parent = null;
if (children != null) {
node.children = (ASTNode[]) children.clone();
}
return node;
} catch (CloneNotSupportedException e) {
throw new Error("Error: clone not supported for " + getClass().getName());
}
}
/**
* Create a deep copy of the AST subtree at this node.
* The copy is dangling, i.e. has no parent.
* @return dangling copy of the subtree at this node
* @apilevel low-level
* @deprecated Please use treeCopy or treeCopyNoTransform instead
* @declaredat ASTNode:67
*/
@Deprecated
public NullLiteral fullCopy() {
return treeCopyNoTransform();
}
/**
* Create a deep copy of the AST subtree at this node.
* The copy is dangling, i.e. has no parent.
* @return dangling copy of the subtree at this node
* @apilevel low-level
* @declaredat ASTNode:77
*/
public NullLiteral treeCopyNoTransform() {
NullLiteral tree = (NullLiteral) copy();
if (children != null) {
for (int i = 0; i < children.length; ++i) {
ASTNode child = (ASTNode) children[i];
if (child != null) {
child = child.treeCopyNoTransform();
tree.setChild(child, i);
}
}
}
return tree;
}
/**
* Create a deep copy of the AST subtree at this node.
* The subtree of this node is traversed to trigger rewrites before copy.
* The copy is dangling, i.e. has no parent.
* @return dangling copy of the subtree at this node
* @apilevel low-level
* @declaredat ASTNode:97
*/
public NullLiteral treeCopy() {
NullLiteral tree = (NullLiteral) copy();
if (children != null) {
for (int i = 0; i < children.length; ++i) {
ASTNode child = (ASTNode) getChild(i);
if (child != null) {
child = child.treeCopy();
tree.setChild(child, i);
}
}
}
return tree;
}
/** @apilevel internal
* @declaredat ASTNode:111
*/
protected boolean is$Equal(ASTNode node) {
return super.is$Equal(node) && (tokenString_LITERAL == ((NullLiteral) node).tokenString_LITERAL);
}
/**
* Replaces the lexeme LITERAL.
* @param value The new value for the lexeme LITERAL.
* @apilevel high-level
*/
public void setLITERAL(String value) {
tokenString_LITERAL = value;
}
/**
* JastAdd-internal setter for lexeme LITERAL using the Beaver parser.
* @param symbol Symbol containing the new value for the lexeme LITERAL
* @apilevel internal
*/
public void setLITERAL(beaver.Symbol symbol) {
if (symbol.value != null && !(symbol.value instanceof String))
throw new UnsupportedOperationException("setLITERAL is only valid for String lexemes");
tokenString_LITERAL = (String)symbol.value;
LITERALstart = symbol.getStart();
LITERALend = symbol.getEnd();
}
/**
* Retrieves the value for the lexeme LITERAL.
* @return The value for the lexeme LITERAL.
* @apilevel high-level
*/
@ASTNodeAnnotation.Token(name="LITERAL")
public String getLITERAL() {
return tokenString_LITERAL != null ? tokenString_LITERAL : "";
}
/** @apilevel internal */
private void type_reset() {
type_computed = null;
type_value = null;
}
/** @apilevel internal */
protected ASTState.Cycle type_computed = null;
/** @apilevel internal */
protected TypeDecl type_value;
/**
* @attribute syn
* @aspect TypeAnalysis
* @declaredat /home/jesper/git/extendj/java4/frontend/TypeAnalysis.jrag:296
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="TypeAnalysis", declaredAt="/home/jesper/git/extendj/java4/frontend/TypeAnalysis.jrag:296")
public TypeDecl type() {
ASTState state = state();
if (type_computed == ASTState.NON_CYCLE || type_computed == state().cycle()) {
return type_value;
}
type_value = typeNull();
if (state().inCircle()) {
type_computed = state().cycle();
} else {
type_computed = ASTState.NON_CYCLE;
}
return type_value;
}
/**
* @attribute syn
* @aspect ConstantExpression
* @declaredat /home/jesper/git/extendj/java4/frontend/ConstantExpression.jrag:383
*/
@ASTNodeAnnotation.Attribute(kind=ASTNodeAnnotation.Kind.SYN)
@ASTNodeAnnotation.Source(aspect="ConstantExpression", declaredAt="/home/jesper/git/extendj/java4/frontend/ConstantExpression.jrag:383")
public boolean isConstant() {
boolean isConstant_value = false;
return isConstant_value;
}
/** @apilevel internal */
public ASTNode rewriteTo() {
return super.rewriteTo();
}
/** @apilevel internal */
public boolean canRewrite() {
return false;
}
}