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oracle.rules.sdk2.ruleset
Class ExprParser

java.lang.Object
oracle.rules.sdk2.ruleset.ExprParser

public class ExprParser

extends java.lang.Object

Scans an input expression string, and if successful, parses the string. Creates an ordered array of Tokens. Determines which token the cursor is in. Analyzes the expression to determine if it will yield the correct type.

TODO: reorg so there is one constructor and various getters that scan/parse/analyze on demand as needed, so user is shielded from knowing how much analysis is needed for a particular getter (like getResultType v. getValue)

Nested Class Summary

class

ExprParser.Token Token represents a lexeme in a parsed expression.

Field Summary

static int	TOKEN_BINARYOP
static int	TOKEN_BOOLEAN_CONSTANT
static int	TOKEN_CHARLIT
static int	TOKEN_CONSTRUCTOR
static int	TOKEN_FUNCTION
static int	TOKEN_IDENTIFIER
static int	TOKEN_LBRACKET
static int	TOKEN_LPAREN
static int	TOKEN_NULL
static int	TOKEN_NUMBER
static int	TOKEN_PRE_UNARYOP
static int	TOKEN_RBRACKET
static int	TOKEN_RPAREN
static int	TOKEN_STRINGLIT
static int	TOKEN_TYPE_OP
static int	TOKEN_TYPE_OPERAND
static int	TOKEN_TYPE_UNKNOWN
static int	TOKEN_UNARY_OR_BINARY_OP
static int	TOKEN_UNKNOWN

Method Summary

java.util.List<ExprParser.Token>	getConcatTokens()
java.util.List<DOID>	getReferences()
DOID	getResultID()
java.util.List<ExprParser.Token>	getTokens()
boolean	hasError()
static boolean	higherPrecedence(java.lang.String op1, java.lang.String op2) Determine whether op1 has higher precedence than op2.
static ExprParser	usageOnly(ExprParser parser, RuleComponent parent)

Methods inherited from class java.lang.Object

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

Field Detail

TOKEN_TYPE_OPERAND

public static final int TOKEN_TYPE_OPERAND

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Constant Field Values

TOKEN_IDENTIFIER

public static final int TOKEN_IDENTIFIER

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Constant Field Values

TOKEN_FUNCTION

public static final int TOKEN_FUNCTION

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Constant Field Values

TOKEN_CONSTRUCTOR

public static final int TOKEN_CONSTRUCTOR

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Constant Field Values

TOKEN_NUMBER

public static final int TOKEN_NUMBER

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Constant Field Values

TOKEN_STRINGLIT

public static final int TOKEN_STRINGLIT

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Constant Field Values

TOKEN_CHARLIT

public static final int TOKEN_CHARLIT

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Constant Field Values

TOKEN_BOOLEAN_CONSTANT

public static final int TOKEN_BOOLEAN_CONSTANT

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Constant Field Values

TOKEN_NULL

public static final int TOKEN_NULL

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Constant Field Values

TOKEN_TYPE_OP

public static final int TOKEN_TYPE_OP

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Constant Field Values

TOKEN_LPAREN

public static final int TOKEN_LPAREN

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Constant Field Values

TOKEN_RPAREN

public static final int TOKEN_RPAREN

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Constant Field Values

TOKEN_BINARYOP

public static final int TOKEN_BINARYOP

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Constant Field Values

TOKEN_PRE_UNARYOP

public static final int TOKEN_PRE_UNARYOP

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Constant Field Values

TOKEN_UNARY_OR_BINARY_OP

public static final int TOKEN_UNARY_OR_BINARY_OP

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Constant Field Values

TOKEN_LBRACKET

public static final int TOKEN_LBRACKET

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Constant Field Values

TOKEN_RBRACKET

public static final int TOKEN_RBRACKET

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Constant Field Values

TOKEN_TYPE_UNKNOWN

public static final int TOKEN_TYPE_UNKNOWN

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Constant Field Values

TOKEN_UNKNOWN

public static final int TOKEN_UNKNOWN

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Constant Field Values

Method Detail

usageOnly

public static ExprParser usageOnly(ExprParser parser,
                                   RuleComponent parent)

hasError

public boolean hasError()

getResultID

public DOID getResultID()

getReferences

public java.util.List<DOID> getReferences()

higherPrecedence

public static boolean higherPrecedence(java.lang.String op1,
                                       java.lang.String op2)

Determine whether op1 has higher precedence than op2. E.g., "*" has higher precedence than "+".

Parameters:

op1 -

op2 -

Returns:

getTokens

public java.util.List<ExprParser.Token> getTokens()

getConcatTokens

public java.util.List<ExprParser.Token> getConcatTokens()

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