Constructor Detail

• JexlParser

  public JexlParser()

Method Detail

• allowRegisters

  public void allowRegisters(boolean registers)

  Internal, for debug purpose only.

• setFrame

  public void setFrame(Scope theFrame)

  Sets the frame to use by this parser.

  This is used to allow parameters to be declared before parsing.

  Parameters:

  theFrame - the register map

• getFrame

  public Scope getFrame()

  Gets the frame used by this parser.

  Since local variables create new symbols, it is important to regain access after parsing to known which / how-many registers are needed.

  Returns:

  the named register map

• pushFrame

  public void pushFrame()

  Create a new local variable frame and push it as current scope.

• popFrame

  public void popFrame()

  Pops back to previous local variable frame.

• checkVariable

  public String checkVariable(ASTIdentifier identifier,
                     String image)

  Checks whether an identifier is a local variable or argument, ie a symbol, stored in a register.

  Parameters:

  identifier - the identifier

  image - the identifier image

  Returns:

  the image

• declareVariable

  public void declareVariable(ASTVar identifier,
                     String image)

  Declares a local variable.

  This method creates an new entry in the symbol map.

  Parameters:

  identifier - the identifier used to declare

  image - the variable name

• declarePragma

  public void declarePragma(String key,
                   Object value)

  Adds a pragma declaration.

  Parameters:

  key - the pragma key

  value - the pragma value

• declareParameter

  public void declareParameter(String identifier)

  Declares a local parameter.

  This method creates an new entry in the symbol map.

  Parameters:

  identifier - the parameter name

• Identifier

  public void Identifier(boolean top)
                  throws ParseException

  Default implementation does nothing but is overriden by generated code.

  Parameters:

  top - whether the identifier is beginning an l/r value

  Throws:

  ParseException - subclasses may throw this

• Identifier

  public final void Identifier()
                        throws ParseException

  Throws:

  ParseException

• getToken

  public Token getToken(int index)

• throwParsingException

  protected void throwParsingException(JexlNode node)

  Throws a parsing exception.

  Parameters:

  node - the node that caused it