Package org.ek9lang.compiler.support

Class SymbolMatcher

java.lang.Object

org.ek9lang.compiler.support.SymbolMatcher

All Implemented Interfaces:

Serializable

public class SymbolMatcher
extends Object
implements Serializable

Given some search criteria and a List of Symbols, this class will find the best match. The main reason for this is to avoid method name mangling and incorporate coercion, and interface/super type matches.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
SymbolMatcher()

Method Summary

Modifier and Type	Method	Description
void	addMatchesToResult(MethodSymbolSearchResult result, SymbolSearch criteria, List<MethodSymbol> methodSymbols)	Match the search criteria against one or more symbol methods.
double	getWeightOfMatch(Optional<ISymbol> fromSymbol, Optional<ISymbol> toSymbol)	Calculates te weight of matching two symbols, which may or may not be present.
double	getWeightOfParameterMatch(List<ISymbol> fromSymbols, List<ISymbol> toSymbols)	Calculates the weight of matching these two lists of parameters.

Methods inherited from class java.lang.Object

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

Constructor Details

SymbolMatcher

public SymbolMatcher()

Method Details

addMatchesToResult

public void addMatchesToResult(MethodSymbolSearchResult result,
 SymbolSearch criteria,
 List<MethodSymbol> methodSymbols)

Match the search criteria against one or more symbol methods. We use a weighting algorithm to try and find the best match where there are methods of the same name.

getWeightOfParameterMatch

public double getWeightOfParameterMatch(List<ISymbol> fromSymbols,
 List<ISymbol> toSymbols)

Calculates the weight of matching these two lists of parameters. This is useful for calculating matches to overloaded methods and coercions. But if the symbols do not have types then it's an immediate failure to match.

getWeightOfMatch

public double getWeightOfMatch(Optional<ISymbol> fromSymbol,
 Optional<ISymbol> toSymbol)

Calculates te weight of matching two symbols, which may or may not be present.