org.mov.parser
Class Token

java.lang.Object
  org.mov.parser.Token

public class Token
extends java.lang.Object

A representation of any token in the Gondola language.

Author:

Andrew Leppard

Field Summary

static int	ABS_TOKEN Represents "abs" symbol
static int	ADD_TOKEN Represents "+" symbol
static int	AND_TOKEN Represents "and" symbol
static int	AVG_TOKEN Represents "avg" symbol
static int	BBL_TOKEN Represents "bol_lower()" symbol
static int	BBU_TOKEN Represents "bol_upper()" symbol
static int	BOOLEAN_TOKEN Represents "boolean" symbol
static int	COMMA_TOKEN Represents "," symbol
static int	CONSTANT_TOKEN Represents "const" symbol
static int	CORR_TOKEN Represents "corr()" symbol
static int	COS_TOKEN Represents "cos()" symbol
static int	DAY_CLOSE_TOKEN Represents "close" symbol
static int	DAY_HIGH_TOKEN Represents "high" symbol
static int	DAY_LOW_TOKEN Represents "low" symbol
static int	DAY_OF_WEEK_TOKEN Represents "dayofweek()" symbol
static int	DAY_OF_YEAR_TOKEN Represents "dayofyear()" symbol
static int	DAY_OPEN_TOKEN Represents "open" symbol
static int	DAY_TOKEN Represents "day()" symbol
static int	DAY_VOLUME_TOKEN Represents "volume" symbol
static int	DIVIDE_TOKEN Represents "/" symbol
static int	ELSE_TOKEN Represents "else" symbol
static int	EMA_TOKEN Represents "ema()" symbol
static int	EQUAL_TOKEN Represents "==" symbol
static int	EXP_TOKEN Represents "exp()" symbol
static int	FALSE_TOKEN Represents "false" symbol
static int	FLOAT_TOKEN Represents "float" symbol
static int	FOR_TOKEN Represents "flor" symbol
static int	FULLSTOP_TOKEN Represents ".
static int	GREATER_THAN_EQUAL_TOKEN Represents ">=" symbol
static int	GREATER_THAN_TOKEN Represents ">" symbol
static int	IF_TOKEN Represents "if" symbol
static int	INTEGER_TOKEN Represents "int" symbol
static int	LAG_TOKEN Represents "lag" symbol
static int	LEFT_BRACE_TOKEN Represents "{" symbol
static int	LEFT_PARENTHESIS_TOKEN Represents "(" symbol
static int	LESS_THAN_EQUAL_TOKEN Represents "<=" symbol
static int	LESS_THAN_TOKEN Represents "<" symbol
static int	LOG_TOKEN Represents "log()" symbol
static int	MACD_TOKEN Represents "macd()" symbol
static int	MAX_TOKEN Represents "max" symbol
static int	MIN_TOKEN Represents "min" symbol
static int	MOMENTUM_TOKEN Represents "momentum()" symbol
static int	MONTH_TOKEN Represents "month()" symbol
static int	MULTIPLY_TOKEN Represents "*" symbol
static int	NOT_EQUAL_TOKEN Represents "!
static int	NOT_TOKEN Represents "not" symbol
static int	NUMBER_TOKEN Represents a number symbol
static int	OBV_TOKEN Represents "obv()" symbol
static int	OR_TOKEN Represents "or" symbol
static int	PERCENT_TOKEN Represents "percent" symbol
static int	RIGHT_BRACE_TOKEN Represents "}" symbol
static int	RIGHT_PARENTHESIS_TOKEN Represents ")" symbol
static int	RSI_TOKEN Represents "rsi" symbol
static int	SD_TOKEN Represents "sd()" symbol
static int	SEMICOLON_TOKEN Represents ";" symbol
static int	SET_TOKEN Represents "=" symbol
static int	SIN_TOKEN Represents "sin()" symbol
static int	SQRT_TOKEN Represents "sqrt" symbol
static int	STRING_TOKEN Represents a string
static int	SUBTRACT_TOKEN Represents "-" symbol
static int	SUM_TOKEN Represents "sum" symbol
static int	TREND_TOKEN Represents "trend()" symbol
static int	TRUE_TOKEN Represents "true" symbol
static int	VARIABLE_TOKEN Represents a variable
static int	WHILE_TOKEN Represents "while" symbol
static int	YEAR_TOKEN Represents "year()" symbol

Constructor Summary

Token()
Create a new empty token.

Method Summary

java.lang.String	getStringValue() For string tokens, get the value.
int	getType() Get the type of this token.
double	getValue() For number tokens, get the value.
int	getValueType() For NUMBER_TOKEN get the type.
java.lang.String	getVariableName() For variable token, get the name.
void	negate() For NUMBER_TOKEN, negate the value.
void	setType(int type) Set the type of this token.
static java.lang.String	stringToToken(Variables variables, Token token, java.lang.String string) Perform lexical analysis on the given string.
static java.lang.String[]	wordsOfGondola() Return a string containing all the words of Gondola language.

Methods inherited from class java.lang.Object

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

Field Detail

LEFT_PARENTHESIS_TOKEN

public static final int LEFT_PARENTHESIS_TOKEN

Represents "(" symbol

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Constant Field Values

RIGHT_PARENTHESIS_TOKEN

public static final int RIGHT_PARENTHESIS_TOKEN

Represents ")" symbol

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LESS_THAN_EQUAL_TOKEN

public static final int LESS_THAN_EQUAL_TOKEN

Represents "<=" symbol

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GREATER_THAN_EQUAL_TOKEN

public static final int GREATER_THAN_EQUAL_TOKEN

Represents ">=" symbol

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LESS_THAN_TOKEN

public static final int LESS_THAN_TOKEN

Represents "<" symbol

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GREATER_THAN_TOKEN

public static final int GREATER_THAN_TOKEN

Represents ">" symbol

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EQUAL_TOKEN

public static final int EQUAL_TOKEN

Represents "==" symbol

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Constant Field Values

ADD_TOKEN

public static final int ADD_TOKEN

Represents "+" symbol

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SUBTRACT_TOKEN

public static final int SUBTRACT_TOKEN

Represents "-" symbol

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MULTIPLY_TOKEN

public static final int MULTIPLY_TOKEN

Represents "*" symbol

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DIVIDE_TOKEN

public static final int DIVIDE_TOKEN

Represents "/" symbol

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OR_TOKEN

public static final int OR_TOKEN

Represents "or" symbol

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AND_TOKEN

public static final int AND_TOKEN

Represents "and" symbol

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NOT_TOKEN

public static final int NOT_TOKEN

Represents "not" symbol

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COMMA_TOKEN

public static final int COMMA_TOKEN

Represents "," symbol

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Constant Field Values

LAG_TOKEN

public static final int LAG_TOKEN

Represents "lag" symbol

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MIN_TOKEN

public static final int MIN_TOKEN

Represents "min" symbol

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MAX_TOKEN

public static final int MAX_TOKEN

Represents "max" symbol

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AVG_TOKEN

public static final int AVG_TOKEN

Represents "avg" symbol

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DAY_OPEN_TOKEN

public static final int DAY_OPEN_TOKEN

Represents "open" symbol

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DAY_CLOSE_TOKEN

public static final int DAY_CLOSE_TOKEN

Represents "close" symbol

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DAY_LOW_TOKEN

public static final int DAY_LOW_TOKEN

Represents "low" symbol

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DAY_HIGH_TOKEN

public static final int DAY_HIGH_TOKEN

Represents "high" symbol

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DAY_VOLUME_TOKEN

public static final int DAY_VOLUME_TOKEN

Represents "volume" symbol

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IF_TOKEN

public static final int IF_TOKEN

Represents "if" symbol

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LEFT_BRACE_TOKEN

public static final int LEFT_BRACE_TOKEN

Represents "{" symbol

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RIGHT_BRACE_TOKEN

public static final int RIGHT_BRACE_TOKEN

Represents "}" symbol

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FULLSTOP_TOKEN

public static final int FULLSTOP_TOKEN

Represents "." symbol

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ELSE_TOKEN

public static final int ELSE_TOKEN

Represents "else" symbol

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PERCENT_TOKEN

public static final int PERCENT_TOKEN

Represents "percent" symbol

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NOT_EQUAL_TOKEN

public static final int NOT_EQUAL_TOKEN

Represents "!=" symbol

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RSI_TOKEN

public static final int RSI_TOKEN

Represents "rsi" symbol

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TRUE_TOKEN

public static final int TRUE_TOKEN

Represents "true" symbol

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FALSE_TOKEN

public static final int FALSE_TOKEN

Represents "false" symbol

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DAY_OF_WEEK_TOKEN

public static final int DAY_OF_WEEK_TOKEN

Represents "dayofweek()" symbol

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DAY_OF_YEAR_TOKEN

public static final int DAY_OF_YEAR_TOKEN

Represents "dayofyear()" symbol

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DAY_TOKEN

public static final int DAY_TOKEN

Represents "day()" symbol

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MONTH_TOKEN

public static final int MONTH_TOKEN

Represents "month()" symbol

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YEAR_TOKEN

public static final int YEAR_TOKEN

Represents "year()" symbol

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SUM_TOKEN

public static final int SUM_TOKEN

Represents "sum" symbol

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SQRT_TOKEN

public static final int SQRT_TOKEN

Represents "sqrt" symbol

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ABS_TOKEN

public static final int ABS_TOKEN

Represents "abs" symbol

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CONSTANT_TOKEN

public static final int CONSTANT_TOKEN

Represents "const" symbol

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BOOLEAN_TOKEN

public static final int BOOLEAN_TOKEN

Represents "boolean" symbol

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INTEGER_TOKEN

public static final int INTEGER_TOKEN

Represents "int" symbol

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FLOAT_TOKEN

public static final int FLOAT_TOKEN

Represents "float" symbol

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SET_TOKEN

public static final int SET_TOKEN

Represents "=" symbol

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SEMICOLON_TOKEN

public static final int SEMICOLON_TOKEN

Represents ";" symbol

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FOR_TOKEN

public static final int FOR_TOKEN

Represents "flor" symbol

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WHILE_TOKEN

public static final int WHILE_TOKEN

Represents "while" symbol

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CORR_TOKEN

public static final int CORR_TOKEN

Represents "corr()" symbol

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EMA_TOKEN

public static final int EMA_TOKEN

Represents "ema()" symbol

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BBL_TOKEN

public static final int BBL_TOKEN

Represents "bol_lower()" symbol

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BBU_TOKEN

public static final int BBU_TOKEN

Represents "bol_upper()" symbol

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MACD_TOKEN

public static final int MACD_TOKEN

Represents "macd()" symbol

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MOMENTUM_TOKEN

public static final int MOMENTUM_TOKEN

Represents "momentum()" symbol

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OBV_TOKEN

public static final int OBV_TOKEN

Represents "obv()" symbol

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SD_TOKEN

public static final int SD_TOKEN

Represents "sd()" symbol

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SIN_TOKEN

public static final int SIN_TOKEN

Represents "sin()" symbol

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COS_TOKEN

public static final int COS_TOKEN

Represents "cos()" symbol

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LOG_TOKEN

public static final int LOG_TOKEN

Represents "log()" symbol

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EXP_TOKEN

public static final int EXP_TOKEN

Represents "exp()" symbol

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TREND_TOKEN

public static final int TREND_TOKEN

Represents "trend()" symbol

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NUMBER_TOKEN

public static final int NUMBER_TOKEN

Represents a number symbol

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VARIABLE_TOKEN

public static final int VARIABLE_TOKEN

Represents a variable

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STRING_TOKEN

public static final int STRING_TOKEN

Represents a string

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Constructor Detail

Token

public Token()

Create a new empty token.

Method Detail

wordsOfGondola

public static java.lang.String[] wordsOfGondola()

Return a string containing all the words of Gondola language.

Returns:

the string of words

stringToToken

public static java.lang.String stringToToken(Variables variables,
                                             Token token,
                                             java.lang.String string)
                                      throws ParserException

Perform lexical analysis on the given string. Extract the first symbol found from the given string, set the passed token object to represent this symbol then return the given string sans the extracted symbol.

Parameters:

variables - variables that will be assumed to be defined for the equation

token - the token to use to represent the first symbol found

string - the string to extract the first symbol from

Returns:

the string minus the first symbol

Throws:

ParserException

getType

public int getType()

Get the type of this token.

Returns:

the type

setType

public void setType(int type)

Set the type of this token.

Parameters:

type - the new type

getValue

public double getValue()

For number tokens, get the value.

Returns:

the value.

getStringValue

public java.lang.String getStringValue()

For string tokens, get the value.

Returns:

the value.

getVariableName

public java.lang.String getVariableName()

For variable token, get the name.

Returns:

the name.

getValueType

public int getValueType()

For NUMBER_TOKEN get the type.

Returns:

the type.

negate

public void negate()

For NUMBER_TOKEN, negate the value.