Package com.blackrook.expression

Class ExpressionFactory

java.lang.Object

com.blackrook.expression.ExpressionFactory

public final class ExpressionFactory
extends Object

Creates expression objects from input text.

Author:

Matthew Tropiano

Constructor Summary

Constructors

Constructor	Description
ExpressionFactory()

Method Summary

Modifier and Type	Method	Description
static Expression	parseExpression(Reader reader, ExpressionFunctionResolver resolver)	Parses a single-line expression.
static Expression	parseExpression(String inputString)	Parses a single-line expression.
static Expression	parseExpression(String inputString, ExpressionFunctionResolver resolver)	Parses a single-line expression.
static Expression	parseExpressionBlock(Reader reader, ExpressionFunctionResolver resolver)	Parses an expression block (multi-line/statement expression).
static Expression	parseExpressionBlock(String inputString)	Parses an expression block (multi-line/statement expression).
static Expression	parseExpressionBlock(String inputString, ExpressionFunctionResolver resolver)	Parses an expression block (multi-line/statement expression).

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionFactory

public ExpressionFactory()

Method Detail

parseExpression

public static Expression parseExpression(String inputString)

Parses a single-line expression. The expression returned may be a reference to an expression parsed before, due to intern-ing it.

Parameters:

inputString - the input string to parse from.

Returns:

the expression parsed.

Throws:

ExpressionParseException - if a parse error occurs.

parseExpressionBlock

public static Expression parseExpressionBlock(String inputString)

Parses an expression block (multi-line/statement expression). The expression returned may be a reference to an expression parsed before, due to intern-ing it.

Parameters:

inputString - the input string to parse from.

Returns:

the expression parsed.

Throws:

ExpressionParseException - if a parse error occurs.

parseExpression

public static Expression parseExpression(String inputString,
                                         ExpressionFunctionResolver resolver)

Parses a single-line expression. The expression returned may be a reference to an expression parsed before, due to intern-ing it.

Parameters:

inputString - the input string to parse from.

resolver - the resolver object for resolving functions in the script.

Returns:

the expression parsed.

Throws:

ExpressionParseException - if a parse error occurs.

parseExpressionBlock

public static Expression parseExpressionBlock(String inputString,
                                              ExpressionFunctionResolver resolver)

Parses an expression block (multi-line/statement expression). The expression returned may be a reference to an expression parsed before, due to intern-ing it.

Parameters:

inputString - the input string to parse from.

resolver - the resolver object for resolving functions in the script.

Returns:

the expression parsed.

Throws:

ExpressionParseException - if a parse error occurs.

parseExpression

public static Expression parseExpression(Reader reader,
                                         ExpressionFunctionResolver resolver)

Parses a single-line expression. The expression returned may be a reference to an expression parsed before, due to intern-ing it.

Parameters:

reader - the reader to parse from.

resolver - the resolver object for resolving functions in the script.

Returns:

the expression parsed.

Throws:

ExpressionParseException - if a parse error occurs.

parseExpressionBlock

public static Expression parseExpressionBlock(Reader reader,
                                              ExpressionFunctionResolver resolver)

Parses an expression block (multi-line/statement expression). The expression returned may be a reference to an expression parsed before, due to intern-ing it.

Parameters:

reader - the reader to parse from.

resolver - the resolver object for resolving functions in the script.

Returns:

the expression parsed.

Throws:

ExpressionParseException - if a parse error occurs.