public TryStatement ParseTryStatement()
{
var tryStatement = new TryStatement {
Token = Next()
};
Match(TokenType.Try);
tryStatement.Body = ParseStatementBlock();
if (Next().IsNot(TokenType.Rescue) && Next().IsNot(TokenType.Finally))
{
throw Error("Missing rescue or finally", Next());
}
if (Next().Is(TokenType.Rescue))
{
var rescueClause = new RescueClause {
Token = Next()
};
Match(TokenType.Rescue);
if (!Next().Is(TokenType.LeftBrace))
{
rescueClause.Identifier = ParseIdentifier();
}
rescueClause.StatementBlock = ParseStatementBlock();
tryStatement.Rescue = rescueClause;
}
if (Next().Is(TokenType.Finally))
{
Match(TokenType.Finally);
tryStatement.Finally = ParseStatementBlock();
}
return(tryStatement);
}
public virtual object Walk(RescueClause node)
{
if (Enter(node))
{
if (node.Identifier != null)
{
node.Identifier.Accept(this);
}
node.StatementBlock.Accept(this);
}
Exit(node);
return(null);
}
public override void Exit(RescueClause node)
{
level--;
}
public override bool Enter(RescueClause node)
{
Print("RescueClause");
level++;
return true;
}
public virtual void Exit(RescueClause node)
{
}
public virtual bool Enter(RescueClause node)
{
return true;
}
public virtual void Exit(RescueClause node)
{
}
public virtual bool Enter(RescueClause node)
{
return(true);
}
public override void Exit(RescueClause node)
{
level--;
}
public override bool Enter(RescueClause node)
{
Print("RescueClause");
level++;
return(true);
}
public TryStatement ParseTryStatement()
{
var tryStatement = new TryStatement { Token = Next() };
Match(TokenType.Try);
tryStatement.Body = ParseStatementBlock();
if (Next().IsNot(TokenType.Rescue) && Next().IsNot(TokenType.Finally))
throw Error("Missing rescue or finally", Next());
if (Next().Is(TokenType.Rescue))
{
var rescueClause = new RescueClause { Token = Next() };
Match(TokenType.Rescue);
if (!Next().Is(TokenType.LeftBrace))
{
rescueClause.Identifier = ParseIdentifier();
}
rescueClause.StatementBlock = ParseStatementBlock();
tryStatement.Rescue = rescueClause;
}
if (Next().Is(TokenType.Finally))
{
Match(TokenType.Finally);
tryStatement.Finally = ParseStatementBlock();
}
return tryStatement;
}
public virtual object Walk(RescueClause node)
{
if (Enter(node))
{
if (node.Identifier != null)
node.Identifier.Accept(this);
node.StatementBlock.Accept(this);
}
Exit(node);
return null;
}