ConditionParser (YABR)

tonic@yabr:~$ Source Portfolio tonicbox.dev

java.lang.Object
- com.tonic.analysis.query.parser.ConditionParser

```
public final class ConditionParser
extends Object
```
Recursive-descent parser for the composable WHERE expression language.

Constructor Summary

Constructors
Constructor Description

ConditionParser(List<Token> tokens, int start)
Creates a parser positioned at one token of a shared list.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static Condition`	`parse(String expression)`	Parses a complete standalone expression string, requiring the whole input be consumed.
`Condition`	`parseExpression()`	Parses one condition from the current position, stopping at the first token the grammar cannot continue with.
`int`	`position()`

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ConditionParser
```
public ConditionParser(List<Token> tokens,
                       int start)
```
    Creates a parser positioned at one token of a shared list.
    
    Parameters:
    
    tokens - the token list to read
    
    start - the index to begin parsing at
- Method Detail
  - parse
```
public static Condition parse(String expression)
                       throws ParseException
```
    Parses a complete standalone expression string, requiring the whole input be consumed.
    
    Parameters:
    
    expression - the expression source
    
    Returns:
    
    the parsed condition
    
    Throws:
    
    ParseException - if the input is malformed or has trailing tokens
  - position
```
public int position()
```
    Returns:
    
    the index of the next unconsumed token
  - parseExpression
```
public Condition parseExpression()
                          throws ParseException
```
    Parses one condition from the current position, stopping at the first token the grammar cannot continue with.
    
    Returns:
    
    the parsed condition
    
    Throws:
    
    ParseException - if the tokens do not form a valid condition