Class IsConvertableToStringOrError

java.lang.Object

org.ek9lang.compiler.common.RuleSupport

org.ek9lang.compiler.phase3.IsConvertableToStringOrError

All Implemented Interfaces:

BiPredicate<IToken,ISymbol>

class IsConvertableToStringOrError
extends RuleSupport
implements BiPredicate<IToken,ISymbol>

Checks if a type has the $ 'toString' method or a 'promotion' #^ to a String method. If not emits an error. Or it must be the String type itself. Also sets the appropriate conversion flags on the ExpressionSymbol if provided.

Field Summary

Fields inherited from class RuleSupport

errorListener, symbolsAndScopes

Constructor Summary

Constructors

Constructor	Description
IsConvertableToStringOrError(SymbolsAndScopes symbolsAndScopes, ErrorListener errorListener)	Constructor to provided typed access.

Method Summary

Modifier and Type	Method	Description
boolean	test(IToken errorReportingLocation, ISymbol typeSymbol)
(package private) boolean	testAndSetFlags(IToken errorReportingLocation, ISymbol typeSymbol, ExpressionSymbol expressionSymbol)	Test if the type can be converted to String and optionally set flags on the expression symbol.

Methods inherited from class Object

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

Methods inherited from interface BiPredicate

and, negate, or

Constructor Details

IsConvertableToStringOrError

IsConvertableToStringOrError(SymbolsAndScopes symbolsAndScopes,
 ErrorListener errorListener)

Constructor to provided typed access.

Method Details

test

public boolean test(IToken errorReportingLocation,
 ISymbol typeSymbol)

Specified by:

test in interface BiPredicate<IToken,ISymbol>

testAndSetFlags

boolean testAndSetFlags(IToken errorReportingLocation,
 ISymbol typeSymbol,
 ExpressionSymbol expressionSymbol)

Test if the type can be converted to String and optionally set flags on the expression symbol.

Parameters:

errorReportingLocation - Location for error reporting

typeSymbol - The type to check

expressionSymbol - Optional expression symbol to set conversion flags on

Returns:

true if type is already String or has $ operator, false if promotion is needed