org.omegahat.Environment.Parser.Parse
Class BasicExpression

java.lang.Object
  |
  +--antlr.BaseAST
        |
        +--antlr.CommonAST
              |
              +--org.omegahat.Environment.Parser.Parse.BasicExpression

All Implemented Interfaces:

antlr.collections.AST, Evaluable, ExpressionInt, OmegaTokenTypes, java.lang.Runnable, java.io.Serializable, Subsettable, TreeNodeInt

Direct Known Subclasses:

AllTerms, Catch, ClassDefinition, Comment, ConditionalExpressionStatement, ConstantExpression, ElementAccess, EnumeratedForLoop, FlowControl, ForLoop, FunctionCall, FunctionExpression, FunctionType, LazyArgument, List, LocalVariable, NumberExpression, SimpleParameterModifier, Type

public abstract class BasicExpression

extends antlr.CommonAST

implements ExpressionInt, java.lang.Runnable, OmegaTokenTypes, java.io.Serializable, Subsettable

Fundamental expression class which most of the language expression classes extend. This provides the tree connectivity support, evaluator access, substitute mechanism, reflectance hooks, and so on.

See Also:

Serialized Form

Field Summary

protected java.util.Vector	children
protected Comment[]	comments
protected boolean	isActive
protected TreeNodeInt	parent
static int	POST
static int	PRE

Fields inherited from class antlr.BaseAST

down, right

Fields inherited from interface org.omegahat.Environment.Parser.AntlrParser.OmegaTokenTypes

ABSTRACT, ARG_LIST, ARRAY_DECLARATOR, ARRAY_INIT, ASSIGN, BAND, BAND_ASSIGN, BLOCK, BNOT, BOR, BOR_ASSIGN, BREAK, BSR, BSR_ASSIGN, BXOR, BXOR_ASSIGN, CHAR_LITERAL, CLASS_DEF, COLON, COMMA, CONTINUE, CTOR_DEF, DEC, DIV, DIV_ASSIGN, DOT, DOTS, EAGER, ELEMENT_OP, EOF, EQUAL, ESC, EXPONENT, EXPONENT_OP, EXPR, EXTENDS_CLAUSE, FINAL, FLOAT_SUFFIX, FUNCTION, GE, GT, HEX_DIGIT, IDENT, IMPLEMENTS_CLAUSE, IMPORT, INC, INDEX_OP, INSTANCE_INIT, INSTANCEOF, INTERFACE_DEF, LABELED_STAT, LAND, LAZY, LBRACK, LCURLY, LE, LITERAL_abstract, LITERAL_boolean, LITERAL_break, LITERAL_byte, LITERAL_case, LITERAL_catch, LITERAL_char, LITERAL_class, LITERAL_const, LITERAL_continue, LITERAL_default, LITERAL_do, LITERAL_double, LITERAL_eager, LITERAL_else, LITERAL_extends, LITERAL_false, LITERAL_final, LITERAL_finally, LITERAL_float, LITERAL_for, LITERAL_function, LITERAL_global, LITERAL_if, LITERAL_implements, LITERAL_import, LITERAL_in, LITERAL_instanceof, LITERAL_int, LITERAL_interface, LITERAL_lazy, LITERAL_long, LITERAL_method, LITERAL_native, LITERAL_new, LITERAL_null, LITERAL_private, LITERAL_protected, LITERAL_public, LITERAL_return, LITERAL_short, LITERAL_static, LITERAL_super, LITERAL_switch, LITERAL_synchronized, LITERAL_this, LITERAL_threadsafe, LITERAL_throw, LITERAL_throws, LITERAL_transient, LITERAL_true, LITERAL_try, LITERAL_void, LITERAL_while, LNOT, LOR, LPAREN, LT, METHOD, METHOD_CALL, METHOD_DEF, MINUS, MINUS_ASSIGN, MISSING_ARG, ML_COMMENT, MOD, MOD_ASSIGN, MODIFIERS, NOT_EQUAL, NULL_TREE_LOOKAHEAD, NUM_FLOAT, NUM_INT, NUM_LONG, OBJBLOCK, PACKAGE_DEF, PARAMETER_DEF, PARAMETERS, PLUS, PLUS_ASSIGN, POST_DEC, POST_INC, QUESTION, RBRACK, RCURLY, RETURN, RPAREN, SEMI, SEQUENCE_OP, SL, SL_ASSIGN, SL_COMMENT, SLIST, SR, SR_ASSIGN, STAR, STAR_ASSIGN, STATIC_INIT, STRING_LITERAL, SYNCHRONIZED, THROW, TRANSIENT, TYPE, TYPECAST, UNARY_MINUS, UNARY_PLUS, VARIABLE_DEF, VOCAB, WS

Constructor Summary

BasicExpression()

BasicExpression(TreeNodeInt parent)

Method Summary

TreeNodeInt	addChild(TreeNodeInt src)
int	addComment(Comment c, int which)
java.lang.Object	apply(Function f)
java.lang.Object	apply(Function f, Evaluator evaluator)
java.lang.Object	apply(Function f, Evaluator evaluator, java.util.Vector result)
java.util.Vector	children()
java.util.Vector	children(java.util.Vector v)
Comment	comment(int which)
Comment	comment(int which, Comment c)
int	depth()
java.lang.Exception	error(java.lang.String msg, Evaluator evaluator)
java.lang.Object	eval(Evaluator evaluator)
java.lang.Object	eval(java.lang.Object[] args, Evaluator evaluator)
void	evalInit(Evaluator evaluator)
Database	evaluationFrame(java.lang.String name, Evaluator evaluator)
Evaluator	evaluator()
java.util.AbstractCollection	getReferencedVariables()
java.util.AbstractCollection	getReferencedVariables(boolean recursive) Return a list of the different variables identified in the expression.
java.util.AbstractCollection	getReferencedVariables(boolean recursive, java.util.AbstractCollection container)
boolean	isActive()
boolean	isActive(boolean val)
TreeNodeInt	parent()
TreeNodeInt	parent(TreeNodeInt p)
Comment	postComment()
Comment	postComment(Comment c)
Comment	preComment()
Comment	preComment(Comment c)
java.lang.String	render(boolean expanded)
int	replaceChild(TreeNodeInt originalChild, TreeNodeInt newChild)
ExpressionInt	resolve(Evaluator evaluator) Rewrite the expression by resolving class names, methods, etc.
void	run()
boolean	setParent(java.util.Enumeration e)
boolean	setParent(List l)
boolean	setParent(TreeNodeInt node)
boolean	setParent(java.util.Vector els)
java.lang.String	showComments(int which)
java.lang.String	showComments(int which, int max)
java.lang.Object	subset(java.lang.Object index, boolean keepStructure)
ExpressionInt	substitute(java.util.Hashtable db) Substitute the variable names in this expression (and its sub-components) present in the hashtable or database with the associated actual values.
ExpressionInt	substitute(java.util.Hashtable db, boolean expand)
java.lang.String	toString()

Methods inherited from class antlr.CommonAST

getText, getType, initialize, initialize, initialize, setText, setType

Methods inherited from class antlr.BaseAST

addChild, equals, equalsList, equalsListPartial, equalsTree, equalsTreePartial, findAll, findAllPartial, getFirstChild, getNextSibling, removeChildren, setFirstChild, setNextSibling, setVerboseStringConversion, toStringList, toStringTree

Methods inherited from class java.lang.Object

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

Field Detail

PRE

public static final int PRE

POST

public static final int POST

children

protected java.util.Vector children

parent

protected TreeNodeInt parent

isActive

protected boolean isActive

comments

protected Comment[] comments

Constructor Detail

BasicExpression

public BasicExpression()

BasicExpression

public BasicExpression(TreeNodeInt parent)

Method Detail

children

public java.util.Vector children()

Specified by:

children in interface TreeNodeInt

children

public java.util.Vector children(java.util.Vector v)

parent

public TreeNodeInt parent()

Specified by:

parent in interface TreeNodeInt

parent

public TreeNodeInt parent(TreeNodeInt p)

Specified by:

parent in interface TreeNodeInt

addChild

public TreeNodeInt addChild(TreeNodeInt src)

Specified by:

addChild in interface TreeNodeInt

replaceChild

public int replaceChild(TreeNodeInt originalChild,
                        TreeNodeInt newChild)

Specified by:

replaceChild in interface TreeNodeInt

setParent

public boolean setParent(java.util.Vector els)

setParent

public boolean setParent(List l)

setParent

public boolean setParent(java.util.Enumeration e)

setParent

public boolean setParent(TreeNodeInt node)

depth

public int depth()

Specified by:

depth in interface TreeNodeInt

run

public void run()

Specified by:

run in interface java.lang.Runnable

evaluator

public Evaluator evaluator()

eval

public java.lang.Object eval(Evaluator evaluator)
                      throws java.lang.Throwable

Specified by:

eval in interface Evaluable

eval

public java.lang.Object eval(java.lang.Object[] args,
                             Evaluator evaluator)
                      throws java.lang.Throwable

Specified by:

eval in interface Evaluable

evalInit

public void evalInit(Evaluator evaluator)

evaluationFrame

public Database evaluationFrame(java.lang.String name,
                                Evaluator evaluator)

isActive

public boolean isActive()

isActive

public boolean isActive(boolean val)

toString

public java.lang.String toString()

Overrides:

toString in class antlr.BaseAST

substitute

public ExpressionInt substitute(java.util.Hashtable db)

Description copied from interface: ExpressionInt

Substitute the variable names in this expression (and its sub-components) present in the hashtable or database with the associated actual values. Similar to the R/S substitute() function.

Specified by:

substitute in interface ExpressionInt

substitute

public ExpressionInt substitute(java.util.Hashtable db,
                                boolean expand)

resolve

public ExpressionInt resolve(Evaluator evaluator)

Description copied from interface: ExpressionInt

Rewrite the expression by resolving class names, methods, etc. as much as possible based on the evaluation context provided by the Evaluator so as to make it more efficient in future calls..

Specified by:

resolve in interface ExpressionInt

apply

public java.lang.Object apply(Function f)
                       throws java.lang.Throwable

apply

public java.lang.Object apply(Function f,
                              Evaluator evaluator)
                       throws java.lang.Throwable

apply

public java.lang.Object apply(Function f,
                              Evaluator evaluator,
                              java.util.Vector result)
                       throws java.lang.Throwable

getReferencedVariables

public java.util.AbstractCollection getReferencedVariables()

getReferencedVariables

public java.util.AbstractCollection getReferencedVariables(boolean recursive)

Return a list of the different variables identified in the expression.

getReferencedVariables

public java.util.AbstractCollection getReferencedVariables(boolean recursive,
                                                           java.util.AbstractCollection container)

render

public java.lang.String render(boolean expanded)

comment

public Comment comment(int which)

comment

public Comment comment(int which,
                       Comment c)

addComment

public int addComment(Comment c,
                      int which)

preComment

public Comment preComment()

preComment

public Comment preComment(Comment c)

postComment

public Comment postComment()

postComment

public Comment postComment(Comment c)

showComments

public java.lang.String showComments(int which)

showComments

public java.lang.String showComments(int which,
                                     int max)

error

public java.lang.Exception error(java.lang.String msg,
                                 Evaluator evaluator)

Specified by:

error in interface ExpressionInt

subset

public java.lang.Object subset(java.lang.Object index,
                               boolean keepStructure)
                        throws java.lang.Throwable

Specified by:

subset in interface Subsettable