org.omegahat.Environment.Parser.Parse
Class CastExpression

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

All Implemented Interfaces:

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

public class CastExpression

extends Type

implements ExpressionInt

Expression treating an object as an instance of a particular class, such as (int) 1.0.

See Also:

Serialized Form

Field Summary

protected java.lang.Object	array
protected java.lang.Class	castClass
protected java.lang.Object	evalued
protected java.lang.Object	expression
protected boolean	isSuper

Fields inherited from class org.omegahat.Environment.Parser.Parse.Type

Final, type

Fields inherited from class org.omegahat.Environment.Parser.Parse.BasicExpression

children, comments, isActive, parent, POST, 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

CastExpression(boolean isSuper, java.lang.Object expr)

CastExpression(Name type, java.lang.Object expr)

Method Summary

java.lang.Class	castClass()
java.lang.Class	castClass(java.lang.Class c)
java.lang.Class	castClass(Evaluator evaluator)
java.lang.Object	convertToClass(java.lang.Class castTo, java.lang.Object value, Evaluator evaluator) Converts the value to an object of the class compatible with the target casting class.
void	error(java.lang.Class target, java.lang.Object value)
java.lang.Object	eval(Evaluator evaluator)
java.lang.Object	expression()
java.lang.Object	expression(java.lang.Object v)
boolean	isSuper()
boolean	isSuper(boolean v)
java.lang.Object	toBoolean(java.lang.Object value) Converts value to a Long.
java.lang.Object	toDouble(java.lang.Object value) Converts value to a Double.
java.lang.Object	toFloat(java.lang.Object value) Converts value to a Float.
java.lang.Object	toInt(java.lang.Object value) Converts value to an Integer.
java.lang.Object	toLong(java.lang.Object value) Converts value to a Long.
java.lang.Object	toShort(java.lang.Object value) Converts value to a Short.
java.lang.String	toString()
java.lang.Object	value()

Methods inherited from class org.omegahat.Environment.Parser.Parse.Type

isFinal, isFinal, type, type, type

Methods inherited from class org.omegahat.Environment.Parser.Parse.BasicExpression

addChild, addComment, apply, apply, apply, children, children, comment, comment, depth, error, eval, evalInit, evaluationFrame, evaluator, getReferencedVariables, getReferencedVariables, getReferencedVariables, isActive, isActive, parent, parent, postComment, postComment, preComment, preComment, render, replaceChild, resolve, run, setParent, setParent, setParent, setParent, showComments, showComments, subset, substitute, substitute

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

Methods inherited from interface org.omegahat.Environment.Parser.Parse.ExpressionInt

error, resolve, substitute

Methods inherited from interface org.omegahat.Environment.Parser.Parse.TreeNodeInt

addChild, children, depth, parent, parent, replaceChild

Methods inherited from interface org.omegahat.Environment.Language.Evaluable

eval

Field Detail

array

protected java.lang.Object array

expression

protected java.lang.Object expression

evalued

protected java.lang.Object evalued

isSuper

protected boolean isSuper

castClass

protected java.lang.Class castClass

Constructor Detail

CastExpression

public CastExpression(Name type,
                      java.lang.Object expr)

CastExpression

public CastExpression(boolean isSuper,
                      java.lang.Object expr)

Method Detail

eval

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

Specified by:

eval in interface Evaluable

Overrides:

eval in class BasicExpression

castClass

public java.lang.Class castClass(Evaluator evaluator)
                          throws java.lang.Exception

castClass

public java.lang.Class castClass()

castClass

public java.lang.Class castClass(java.lang.Class c)

value

public java.lang.Object value()

convertToClass

public java.lang.Object convertToClass(java.lang.Class castTo,
                                       java.lang.Object value,
                                       Evaluator evaluator)
                                throws java.lang.Exception

Converts the value to an object of the class compatible with the target casting class.

Parameters:

castTo - the class to which the value is being cast.

value - the object to be coerced to the target class.

Returns:

a value compatible with the target class.

toInt

public java.lang.Object toInt(java.lang.Object value)
                       throws java.lang.Exception

Converts value to an Integer.

toDouble

public java.lang.Object toDouble(java.lang.Object value)
                          throws java.lang.Exception

Converts value to a Double.

toFloat

public java.lang.Object toFloat(java.lang.Object value)
                         throws java.lang.Exception

Converts value to a Float.

toShort

public java.lang.Object toShort(java.lang.Object value)
                         throws java.lang.Exception

Converts value to a Short.

toLong

public java.lang.Object toLong(java.lang.Object value)
                        throws java.lang.Exception

Converts value to a Long.

toBoolean

public java.lang.Object toBoolean(java.lang.Object value)
                           throws java.lang.Exception

Converts value to a Long.

error

public void error(java.lang.Class target,
                  java.lang.Object value)
           throws java.lang.Exception

isSuper

public boolean isSuper()

isSuper

public boolean isSuper(boolean v)

expression

public java.lang.Object expression()

expression

public java.lang.Object expression(java.lang.Object v)

toString

public java.lang.String toString()

Overrides:

toString in class Type