edu.mit.ai.psg.jevaES
Class JevaNode

java.lang.Object
  |
  +--edu.mit.ai.psg.jevaES.SimpleNode
        |
        +--edu.mit.ai.psg.jevaES.JevaNode

Direct Known Subclasses:

ExpressionNode, JNDImportDeclaration, JNDPackageDeclaration, JNEArguments, JNEArrayDimensions, JNEArrayInitializer, JNEAssignmentOperator, JNFormalParameter, JNPrimitiveType, JNResultType, JNSBlock, JNSBreakStatement, JNSContinueStatement, JNSDoStatement, JNSEmptyStatement, JNSExpressionStatement, JNSExpressionStatementList, JNSForStatement, JNSIfStatement, JNSLabeledStatement, JNSLocalVariableDeclaration, JNSReturnStatement, JNSSwitchLabel, JNSSwitchStatement, JNSSynchronizedStatement, JNSThrowStatement, JNSTryStatement, JNSVariableDeclarator, JNSWhileStatement, JNType

public class JevaNode

extends SimpleNode

implements IJevaNode

JevaNode: Extends SimpleNode so each node can echo back its token stream of Java code. Adds first and last+1 token of the parsed syntax, so the syntax can be regenerated, and adds print methods to echo back the parsed java code, with or without comments. (This is an extension class so that it is easier to upgrade to new versions of Javacc that generate new versions of SimpleNode.)

Fields inherited from class edu.mit.ai.psg.jevaES.SimpleNode

children, id, parent

Constructor Summary

JevaNode(int id)

Method Summary

Token	getBeginToken() return the first token (in token chain) of the parsed syntax
Token	getEndToken() return the token after the last token of the parsed syntax
protected static IllegalStateException	notVerified() called from eval methods if node hasn't been verified first
void	print(PrintWriter stream) Print tokens of parsed node's syntax, including children, to stream.
void	print(PrintWriter stream, boolean includeSpecialTokens)
protected void	printToken(Token t, PrintWriter stream, boolean includeSpecialTokens)
String	printToString() Print tokens of parsed node's syntax, including children, to string.
String	printToString(boolean includeSpecialTokens)
void	setBeginToken(Token t) Called by the parser to set the first token of the parsed syntax
void	setEndToken(Token t) Called by the parser to set the last+1 token of the parsed syntax
protected static Error	shouldNotHappen(String explain) calls EvalMethods.shouldNotHappen(String);
protected static Error	shouldNotHappen(String explain, Throwable e) calls EvalMethods.shouldNotHappen(String,Throwable);
protected static Error	shouldNotHappen(Throwable e) calls EvalMethods.shouldNotHappen(Throwable);

Methods inherited from class edu.mit.ai.psg.jevaES.SimpleNode

dump, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, toString, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

JevaNode

public JevaNode(int id)

Method Detail

getBeginToken

public Token getBeginToken()

Description copied from interface: IJevaNode

return the first token (in token chain) of the parsed syntax

Specified by:

getBeginToken in interface IJevaNode

Returns:

the first token (in token chain) of the parsed syntax

getEndToken

public Token getEndToken()

Description copied from interface: IJevaNode

return the token after the last token of the parsed syntax

Specified by:

getEndToken in interface IJevaNode

Returns:

the token after the last token of the parsed syntax

setBeginToken

public void setBeginToken(Token t)

Called by the parser to set the first token of the parsed syntax

Specified by:

setBeginToken in interface IJevaNode

setEndToken

public void setEndToken(Token t)

Called by the parser to set the last+1 token of the parsed syntax

Specified by:

setEndToken in interface IJevaNode

print

public void print(PrintWriter stream)

Print tokens of parsed node's syntax, including children, to stream. also prints special tokens (whitespace and comments)

Specified by:

print in interface IJevaNode

print

public void print(PrintWriter stream,
                  boolean includeSpecialTokens)

Specified by:

print in interface IJevaNode

printToken

protected final void printToken(Token t,
                                PrintWriter stream,
                                boolean includeSpecialTokens)

printToString

public String printToString()

Print tokens of parsed node's syntax, including children, to string. Includes special tokens (whitespace and comments).

Specified by:

printToString in interface IJevaNode

Returns:

a string recreating node's syntax

printToString

public String printToString(boolean includeSpecialTokens)

Specified by:

printToString in interface IJevaNode

shouldNotHappen

protected static Error shouldNotHappen(String explain,
                                       Throwable e)

calls EvalMethods.shouldNotHappen(String,Throwable);

shouldNotHappen

protected static Error shouldNotHappen(Throwable e)

calls EvalMethods.shouldNotHappen(Throwable);

shouldNotHappen

protected static Error shouldNotHappen(String explain)

calls EvalMethods.shouldNotHappen(String);

notVerified

protected static IllegalStateException notVerified()

called from eval methods if node hasn't been verified first