MCExceptionStatements.mc4

/* (c) https://github.com/MontiCore/monticore */
package de.monticore.statements;

/* This is a MontiCore stable grammar.
 * Adaptations -- if any -- are conservative. */

import de.monticore.statements.*;

/**
 * This grammar defines the exception statements.
 * This includes Java try with catch and finally, as well as throw.
 *
 * This grammar is part of a hierarchy of statements, namely
 * * statements/MCStatementsBasis.mc4
 * * -- statements/MCAssertStatements.mc4
 * * -- statements/MCVarDeclarationStatements.mc4
 * * -- -- statements/MCArrayStatements.mc4
 * * -- -- statements/MCCommonStatements.mc4
 * * -- -- -- statements/MCExceptionStatements.mc4
 * * -- -- -- statements/MCSynchronizedStatements.mc4
 * * -- statements/MCLowLevelStatements.mc4
 * * -- statements/MCReturnStatements.mc4
 *
 * and the composition of all statement grammars to full Java:
 * * -- -- statements/MCFullJavaStatements.mc4
 *
*/

component grammar MCExceptionStatements 
          extends MCCommonStatements {

// Three different variants of the TryStatement differ in the
// optionality of their elements.

TryStatement1 implements MCStatement
    =   "try"
         core:MCJavaBlock
         CatchClause+
         ("finally" finally:MCJavaBlock)? ;

TryStatement2 implements MCStatement
    =   "try"
        core:MCJavaBlock
        CatchClause*
        ("finally" finally:MCJavaBlock) ;

TryStatement3 implements MCStatement
    =   "try" "(" (TryLocalVariableDeclaration || ";")+ ";"? ")"
        core:MCJavaBlock
        CatchClause*
        ("finally" finally:MCJavaBlock)? ;

TryLocalVariableDeclaration
    = MCModifier* MCType DeclaratorId "=" Expression ;

CatchClause
    = "catch" "(" MCModifier* CatchTypeList Name ")" MCJavaBlock ;

CatchTypeList
    = (MCQualifiedName || "|")+ ;

ThrowStatement implements MCStatement
    = "throw" Expression ";" ;

}