Package org.ek9lang.compiler.directives

package org.ek9lang.compiler.directives

The directives are really aimed at helping the creation of the EK9 language, but they maybe very useful in the early stages of adoption of ek9 (should there be any). Because they enable an ek9 developer to send the ek9 compiler developers (me) an example of code that is broken.

The example below shows that the type for 'i' could not be worked out by the compiler and due to that later on a second error is triggered. The 'at' Error is this directive.

The 'FULL_RESOLUTION' is the 'phase' of compilation this error was detected in, and the 'UNABLE_TO_DETERMINE_COMMON_TYPE' is the error enumeration from 'ErrorListener.SemanticClassification'.

 #!ek9
 defines module bad.forloops.check
   defines program

     BadForLoopIncompatibleTypes1
       stdout ← Stdout()

       @Error::  FULL_RESOLUTION: UNABLE_TO_DETERMINE_COMMON_TYPE
       for i in 1 ... 'c'
         @Error: FULL_RESOLUTION: TYPE_NOT_RESOLVED
         stdout.println(`Value [${i}]`)
 //EOF
 

Related Packages

Package	Description
org.ek9lang.compiler	B - For the EK9 compiler itself.

Class	Description
Directive	Provides basic interface for the EK9 internal @ type directives.
DirectiveListenerSupplier	Provides the listeners for directive checks.
DirectivesCompilationPhase	Just extracts the compilation phase or throws an illegal argument exception.
DirectivesNextLineNumber	Finds the next line number from where a directive has been used.
DirectiveSpec	Specification of a directive, all the common details used in a range of directives.
DirectiveSpecExtractor	Just extract the spec from the free format data in the directive.
DirectivesSymbolCategory	Just extracts the symbol category or throws an illegal argument exception.
DirectivesSymbolName	Just extracts the symbol name or throws an illegal argument exception.
DirectiveType	To be used in EK9 source code, for things like internal tests or compiler directives, instrumentation, reified type retention etc.
ErrorDirective	To be used in EK9 source code to assert that an error will be created.
ErrorDirectiveListener	Just checks if there are any directives that relate to errors in the parsed module and tallies those up with any errors held for the phase of compilation.
GenusDirective	To be used in EK9 source code to assert that a type can or cannot be resolved.
GenusDirectiveListener	Just checks if there are any directives that relate to @Genus in the parsed module and checks the resolution through the symbol and its genus.
ImplementsDirective	To be used in EK9 source code to assert that a type can or cannot be resolved as extending a type or function.
ImplementsDirectiveListener	Just checks if there are any directives that relate to @Implements in the parsed module and checks the resolution through the symbol and its hierarchy.
NotResolvedDirective	To be used in EK9 source code to assert that a type can or cannot be resolved.
NotResolvedDirectiveListener	Just checks if there are any directives that relate to @Resolved in the parsed module and checks the non-resolution.
ResolutionDirective	To be used in EK9 source code to assert that a type can or cannot be resolved.
ResolutionDirectiveListener	For resolved and notResolved directives.
ResolvedDirective	To be used in EK9 source code to assert that a type can or cannot be resolved.
ResolvedDirectiveListener	Just checks if there are any directives that relate to @Resolved in the parsed module and checks the resolution.