Package com.inductiveautomation.ignition.common.expressions.parsing

Class SimpleExpressionParser

java.lang.Object

com.inductiveautomation.ignition.common.expressions.parsing.SimpleExpressionParser

All Implemented Interfaces:

Parser

public class SimpleExpressionParser
extends java.lang.Object
implements Parser

Simple recursive descent parser for simple arithmetic expressions. Scannerless parsing. Generates an AST (using Expression instances) from the given input if part of language.

Constructor Summary

Constructors

Constructor	Description
SimpleExpressionParser(ArithmeticExpression.StringTypeAffinity affinity)

Method Summary

Modifier and Type	Method	Description
static boolean	containsMathematicalExpression(java.lang.String value)	Returns true if the string contains any of the mathematical operators that would make this an expression according to this parser.
Expression	parse(java.lang.String expr, ExpressionParseContext binder)

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleExpressionParser

public SimpleExpressionParser(ArithmeticExpression.StringTypeAffinity affinity)

Method Detail

containsMathematicalExpression

public static boolean containsMathematicalExpression(java.lang.String value)

Returns true if the string contains any of the mathematical operators that would make this an expression according to this parser.

parse

public Expression parse(java.lang.String expr,
                        ExpressionParseContext binder)

Specified by:

parse in interface Parser