antlraux.clparse
Class TypeDealer

java.lang.Object
  |
  +--antlraux.clparse.TypeDealer

public class TypeDealer

extends java.lang.Object

Conversion between Strings and java basic types is necessary along all the parsing. This static class encapsulated all the functionallity needed for doing that.

We will say that a char is valid if it represents one of the types supported by the parser. Otherwise it will be not valid.

Valid type chars are:

• 'S' or 's' for type String
• 'B' or 'b' for type Boolean
• 'I' or 'i' for type Integer
• 'C' or 'c' for type Character
• 'F' or 'f' for type Float

Strings, integers, chars and floats are directly obtained from the command line. In order to specify a boolean value the user has to write 'false' or 'true' in the command line.

Author:

Enrique José García Cota

Constructor Summary

TypeDealer()

Method Summary

static void	checkCharType(char type) Checks if a char is valid.
static void	checkStringTypes(java.lang.String paramTypes) Checks if a string contains only valid chars.
protected static java.lang.String	getStringOfTypes(java.lang.String types, boolean commas) Returns a string containing the names of the classes associated to a specification string.
protected static java.lang.Class	getTypeFromChar(char type) Given a valid class specification, it returns its class.
protected static java.lang.Class[]	getTypesFromString(java.lang.String types) Given a String of specification, it returns its table of types associated.
static java.lang.Object	objectFromString(java.lang.String source, char type) Tries to parse an object of the specified type from a specified String.

Methods inherited from class java.lang.Object

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

Constructor Detail

TypeDealer

public TypeDealer()

Method Detail

checkStringTypes

public static void checkStringTypes(java.lang.String paramTypes)
                             throws CommandLineParserException

Checks if a string contains only valid chars.

Parameters:

paramTypes - The string to check.

Throws:

CommandLineParserException - If the string contains one not valid char at least.

checkCharType

public static void checkCharType(char type)
                          throws CommandLineParserException

Checks if a char is valid.

Parameters:

type - The char to check.

Throws:

CommandLineParserException - If type is not valid.

objectFromString

public static java.lang.Object objectFromString(java.lang.String source,
                                                char type)
                                         throws CommandLineParserException

Tries to parse an object of the specified type from a specified String.

Parameters:

source - The string to parse.

type - The type of the object that we want to parse.

Throws:

CommandLineParserException - If the parsing could not be done.

getTypeFromChar

protected static java.lang.Class getTypeFromChar(char type)
                                          throws CommandLineParserException

Given a valid class specification, it returns its class.

Returns:

The class needed.

Throws:

CommandLineParserException - If type is not valid.

getTypesFromString

protected static java.lang.Class[] getTypesFromString(java.lang.String types)
                                               throws CommandLineParserException

Given a String of specification, it returns its table of types associated.

Parameters:

types - The type specification String.

Throws:

CommandLineParserException - If types contains one not valid char.

getStringOfTypes

protected static java.lang.String getStringOfTypes(java.lang.String types,
                                                   boolean commas)
                                            throws CommandLineParserException

Returns a string containing the names of the classes associated to a specification string.

Parameters:

types - The string to check.

commas - If true, the names are separated by commas and spaces. Otherwise they are only separated by spaces.

Throws:

CommandLineParserException - If types contains one not valid char at least.