openjava.syntax
Class ExpressionRule

java.lang.Object
  |
  +--openjava.syntax.AbstractSyntaxRule
        |
        +--openjava.syntax.ExpressionRule

All Implemented Interfaces:

SyntaxRule, TokenID

public class ExpressionRule

extends AbstractSyntaxRule

Syntax rule concerning expressions.

Since:

%SOFTWARE% 1.0

Version:

1.0

Author:

Michiaki Tatsubori

See Also:

Expression

Field Summary

private Environment

env

Fields inherited from class openjava.syntax.AbstractSyntaxRule

Fields inherited from interface openjava.syntax.TokenID

ABSTRACT, ANDASSIGN, ASSIGN, BANG, BIT_AND, BIT_OR, BOOLEAN, BREAK, BYTE, CASE, CATCH, CHAR, CHARACTER_LITERAL, CLASS, COLON, COMMA, CONDITIONAL_AND, CONDITIONAL_OR, CONTINUE, DECREMENT, DEFAULT, DO, DOT, DOUBLE, DOUBLE_LITERAL, ELSE, EOF, EQUAL, EXTENDS, FALSE, FINAL, FINALLY, FLOAT, FLOAT_LITERAL, FOR, GREATER, GREATER_EQUAL, HOOK, IDENTIFIER, IF, IMPLEMENTS, IMPORT, INCREMENT, INSTANCEOF, INSTANTIATES, INT, INTEGER_LITERAL, INTERFACE, LBRACE, LBRACKET, LESS, LESS_EQUAL, LONG, LONG_LITERAL, LPAREN, LSHIFT, LSHIFTASSIGN, METACLASS, MINUS, MINUSASSIGN, NATIVE, NEW, NOT_EQUAL, NULL, ORASSIGN, PACKAGE, PLUS, PLUSASSIGN, PRIVATE, PROTECTED, PUBLIC, RBRACE, RBRACKET, REM, REMASSIGN, RETURN, RPAREN, RSIGNEDSHIFT, RSIGNEDSHIFTASSIGN, RUNSIGNEDSHIFT, RUNSIGNEDSHIFTASSIGN, SEMICOLON, SHORT, SLASH, SLASHASSIGN, STAR, STARASSIGN, STATIC, STRING_LITERAL, SUPER, SWITCH, SYNCHRONIZED, THIS, THROW, THROWS, TILDE, TRANSIENT, TRUE, TRY, VOID, VOLATILE, WHILE, XOR, XORASSIGN

Constructor Summary

ExpressionRule()

ExpressionRule(Environment env)

Method Summary

ParseTree	consume(TokenSource token_src) Consumes tokens from the given token source following the rule.
Expression	consumeExpression(TokenSource token_src) Subclasses of this class can override this method to extend its returnable expressions.

Methods inherited from class openjava.syntax.AbstractSyntaxRule

getSyntaxException, lookahead

Methods inherited from class java.lang.Object

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

Field Detail

env

private Environment env

Constructor Detail

ExpressionRule

public ExpressionRule(Environment env)

ExpressionRule

public ExpressionRule()

Method Detail

consume

public final ParseTree consume(TokenSource token_src)
                        throws SyntaxException

Description copied from class: AbstractSyntaxRule

Consumes tokens from the given token source following the rule. To be overridden.

Specified by:

consume in interface SyntaxRule

Specified by:

consume in class AbstractSyntaxRule

Parameters:

token_src - token source to consume.

Returns:

a parse tree object consumed by following this rule.

SyntaxException

consumeExpression

public Expression consumeExpression(TokenSource token_src)
                             throws SyntaxException

Subclasses of this class can override this method to extend its returnable expressions.

Parameters:

token_src - token source

Returns:

expression

Throws:

SyntaxException