Class ValidLiteralValueOrError

java.lang.Object

org.ek9lang.compiler.phase1.ValidLiteralValueOrError

final class ValidLiteralValueOrError
extends Object

Validates literal values at compile time to catch semantically invalid literals that the ANTLR lexer accepts structurally but that can never represent valid values. For example, 2024-13-45 matches the DateLiteral lexer rule but month 13 and day 45 are invalid. At runtime, invalid literals silently become "unset" (by design for user input), but for source code literals this is always a bug.

Constructor Summary

Constructors

Constructor	Description
ValidLiteralValueOrError(ErrorListener errorListener)

Method Summary

Modifier and Type	Method	Description
(package private) boolean	isValid(org.antlr.v4.runtime.Token start, String typeName, String literalText)	Check if the literal text is a valid value for the given type.

Methods inherited from class Object

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

Constructor Details

ValidLiteralValueOrError

ValidLiteralValueOrError(ErrorListener errorListener)

Method Details

isValid

boolean isValid(org.antlr.v4.runtime.Token start,
 String typeName,
 String literalText)

Check if the literal text is a valid value for the given type.

Returns:

true if valid (or if no validation applies), false if invalid (error already emitted).