Interface ExpressionParserEngine

All Known Implementing Classes:

DefaultExpressionParserEngine

public interface ExpressionParserEngine

This interface can be used to create multiple Expression parsers, all using the same core stuff.
It is not required to use this at all.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	ExpressionParserEngine.Builder<T extends ExpressionParserEngine>	Abstract class that can be used to create a new Builder for a ExpressionParserEngine.

Method Summary

Modifier and Type	Method	Description
ExpressionTemplate	compile(String text, ParseWarnCollector collector)	Converts the provided String into a ExpressionTemplate instance to use.
default boolean	compileToBoolean(String text, ParseWarnCollector collector)	Parses the provided text into a ExpressionTemplate and returns its boolean value to use.
default boolean	compileToBoolean(String text, ParseWarnCollector collector, boolean def)	Parses the provided text into a ExpressionTemplate and returns its boolean value to use.
default double	compileToDouble(String text, ParseWarnCollector collector)	Parses the provided text into a ExpressionTemplate and returns its double value to use.
default double	compileToDouble(String text, ParseWarnCollector collector, double def)	Parses the provided text into a ExpressionTemplate and returns its double value to use.
default String	compileToString(String text, ParseWarnCollector collector)	Parses the provided text into a ExpressionTemplate and returns its String value to use.
default String	compileToString(String text, ParseWarnCollector collector, String def)	Parses the provided text into a ExpressionTemplate and returns its String value to use.

Method Details

compile

ExpressionTemplate compile(String text,
 ParseWarnCollector collector)

Converts the provided String into a ExpressionTemplate instance to use.

Parameters:

text - The text to parse into a ExpressionTemplate.

collector - ParseWarnCollector instance used to collect warnings during the parsing.

Returns:

Possibly-null ExpressionTemplate instance.

compileToBoolean

default boolean compileToBoolean(String text,
 ParseWarnCollector collector)

Parses the provided text into a ExpressionTemplate and returns its boolean value to use.
Should the ExpressionTemplate be null will false be returned. Use compileToBoolean(String,ParseWarnCollector,boolean) to change the default boolean.

Parameters:

text - The text to parse.

collector - ParseWarnCollector instance used to collect warnings during the parsing.

Returns:

boolean value from the parsed ExpressionTemplate.

compileToBoolean

default boolean compileToBoolean(String text,
 ParseWarnCollector collector,
 boolean def)

Parses the provided text into a ExpressionTemplate and returns its boolean value to use.
Should the ExpressionTemplate be null will the provided default boolean value be returned.

Parameters:

text - The text to parse.

collector - ParseWarnCollector instance used to collect warnings during the parsing.

def - Default boolean value to use should ExpressionTemplate returned be null.

Returns:

boolean value from the parsed ExpressionTemplate.

compileToDouble

default double compileToDouble(String text,
 ParseWarnCollector collector)

Parses the provided text into a ExpressionTemplate and returns its double value to use.
Should the ExpressionTemplate be null will 0.0 be returned. Use compileToDouble(String,ParseWarnCollector,double) to change the default double.

Parameters:

text - The text to parse.

collector - ParseWarnCollector instance used to collect warnings during the parsing.

Returns:

double value from the parsed ExpressionTemplate.

compileToDouble

default double compileToDouble(String text,
 ParseWarnCollector collector,
 double def)

Parses the provided text into a ExpressionTemplate and returns its double value to use.
Should the ExpressionTemplate be null will the provided default double value be returned.

Parameters:

text - The text to parse.

collector - ParseWarnCollector instance used to collect warnings during the parsing.

def - Default double value to use should ExpressionTemplate returned be null.

Returns:

double value from the parsed ExpressionTemplate.

compileToString

default String compileToString(String text,
 ParseWarnCollector collector)

Parses the provided text into a ExpressionTemplate and returns its String value to use.
Should the ExpressionTemplate be null will an empty String be returned. Use compileToString(String,ParseWarnCollector,String) to change the default String.

Parameters:

text - The text to parse.

collector - ParseWarnCollector instance used to collect warnings during the parsing.

Returns:

String value from the parsed ExpressionTemplate.

compileToString

default String compileToString(String text,
 ParseWarnCollector collector,
 String def)

Parses the provided text into a ExpressionTemplate and returns its String value to use.
Should the ExpressionTemplate be null will the provided default String value be returned.

Parameters:

text - The text to parse.

collector - ParseWarnCollector instance used to collect warnings during the parsing.

def - Default String value to use should ExpressionTemplate returned be null.

Returns:

String value from the parsed ExpressionTemplate.