private void ExecuteTryCatchStmt(Ast.TryCatchStmt stmt, ScriptEnv env)
{
ExecuteBlock(stmt.TryBlock, env);
if (env.DidThrow)
{
env.DidThrow = false;
ExecuteBlock(stmt.CatchBlock, env);
}
}
private Ast.Stmt ParseTryCatchStmt(TokenQueue q)
{
var stmt = new Ast.TryCatchStmt {
SourceToken = q.SourceToken
};
q.Take("begin");
q.Take("try");
stmt.TryBlock = new Ast.Block {
SourceToken = q.SourceToken
};
while (q.Peek() != "end")
{
var tryStmt = ParseStmt(q);
if (tryStmt != null)
{
stmt.TryBlock.Statements.Add(tryStmt);
}
}
q.Take("end");
q.Take("try");
q.Take("begin");
q.Take("catch");
stmt.CatchBlock = new Ast.Block {
SourceToken = q.SourceToken
};
while (q.Peek() != "end")
{
var catchStmt = ParseStmt(q);
if (catchStmt != null)
{
stmt.CatchBlock.Statements.Add(catchStmt);
}
}
q.Take("end");
q.Take("catch");
return(stmt);
}