You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: entry.rs
    path of file: ./repos/anchor/lang/syn/src/codegen/program
    
    the code of the file until where you have to start completion: use crate::program_codegen::dispatch;
use crate::Program;
use heck::CamelCase;
use quote::quote;

pub fn generate(program: &Program) -> proc_macro2::TokenStream {
    let name: proc_macro2::TokenStream = program.name.to_string().to_camel_case().parse().unwrap();
    let fallback_maybe = dispatch::gen_fallback(program).unwrap_or(quote! {
        Err(anchor_lang::error::ErrorCode::InstructionMissing.into())
    });
    quote! {
        #[cfg(not(feature = "no-entrypoint"))]
        anchor_lang::solana_program::entrypoint!(entry);
        /// The Anchor codegen exposes a programming model where a user defines
        /// a set of methods inside of a `#[program]` module in a way similar
        /// to writing RPC request handlers. The macro then generates a bunch of
        /// code wrapping these user defined methods into something that can be
        /// executed on Solana.
        ///
        /// These methods fall into one category for now.
        ///
        /// Global methods - regular methods inside of the `#[program]`.
        ///
        /// Care must be taken by the codegen to prevent collisions between
        /// methods in these different namespaces. For this reason, Anchor uses
        /// a variant of sighash to perform method dispatch, rather than
        /// something like a simple enum variant discriminator.
        ///
        /// The execution flow of the generated code can be roughly outlined:
        ///
        /// * Start program via the entrypoint.
        /// * Strip method identifier off the first 8 bytes of the instruction
        ///   data and invoke the identified method. The method identifier
        ///   is a variant of sighash. See docs.rs for `anchor_lang` for details.
        /// * If the method identifier is an IDL identifier, execute the IDL
        ///   instructions, which are a special set of hardcoded instructions
        ///   baked into every Anchor program. Then exit.
        /// * Otherwise, the method identifier is for a user defined
        ///   instruction, i.e., one of the methods in the user defined
        ///   `#[program]` module. Perform method dispatch, i.e., execute the
        ///   big match statement mapping method identifier to method handler
        ///   wrapper.
        /// * Run the method handler wrapper. This wraps the code the user
        ///   actually wrote, deserializing the accounts, constructing the
        ///   context, invoking the user's code, and finally running the exit
        ///   routine, which typically persists account changes.
        ///
        /// The `entry` function here, defines the standard entry to a Solana
        /// program, where execution begins.
        pub fn entry<'info>(program_id: &Pubkey, accounts: &'info [AccountInfo<'info>], data: &[u8]) -> anchor_lang::solana_program::entrypoint::ProgramResult {
            try_entry(program_id, accounts, data).map_err(|e| {
                e.log();
                e.into()
            })
        }

        fn try_entry<'info>(prog
    
pub fn generate(program: &Program) -> proc_macro2::TokenStream {
    let name: proc_macro2::TokenStream = program.name.to_string().to_camel_case().parse().unwrap();
    let fallback_maybe = dispatch::gen_fallback(program).unwrap_or(quote! {
        Err(anchor_lang::error::ErrorCode::InstructionMissing.into())
    });
    quote! {
        #[cfg(not(feature = "no-entrypoint"))]
        anchor_lang::solana_program::entrypoint!(entry);
        /// The Anchor codegen exposes a programming model where a user defines
        /// a set of methods inside of a `#[program]` module in a way similar
        /// to writing RPC request handlers. The macro then generates a bunch of
        /// code wrapping these user defined methods into something that can be
        /// executed on Solana.
        ///
        /// These methods fall into one category for now.
        ///
        /// Global methods - regular methods inside of the `#[program]`.
        ///
        /// Care must be taken by the codegen to prevent collisions between
        /// methods in these different namespaces. For this reason, Anchor uses
        /// a variant of sighash to perform method dispatch, rather than
        /// something like a simple enum variant discriminator.
        ///
        /// The execution flow of the generated code can be roughly outlined:
        ///
        /// * Start program via the entrypoint.
        /// * Strip method identifier off the first 8 bytes of the instruction
        ///   data and invoke the identified method. The method identifier
        ///   is a variant of sighash. See docs.rs for `anchor_lang` for details.
        /// * If the method identifier is an IDL identifier, execute the IDL
        ///   instructions, which are a special set of hardcoded instructions
        ///   baked into every Anchor program. Then exit.
        /// * Otherwise, the method identifier is for a user defined
        ///   instruction, i.e., one of the methods in the user defined
        ///   `#[program]` module. Perform method dispatch, i.e., execute the
        ///   big match statement mapping method identifier to method handler
        ///   wrapper.
        /// * Run the method handler wrapper. This wraps the code the user
        ///   actually wrote, deserializing the accounts, constructing the
        ///   context, invoking the user's code, and finally running the exit
        ///   routine, which typically persists account changes.
        ///
        /// The `entry` function here, defines the standard entry to a Solana
        /// program, where execution begins.
        pub fn entry<'info>(program_id: &Pubkey, accounts: &'info [AccountInfo<'info>], data: &[u8]) -> anchor_lang::solana_program::entrypoint::ProgramResult {
            try_entry(program_id, accounts, data).map_err(|e| {
                e.log();
                e.into()
            })
        }

        fn try_entry<'info>(program_id: &Pubkey, accounts: &'info [AccountInfo<'info>], data: &[u8]) -> anchor_lang::Result<()> {
            #[cfg(feature = "anchor-debug")]
            {
                msg!("anchor-debug is active");
            }
            if *program_id != ID {
                return Err(anchor_lang::error::ErrorCode::DeclaredProgramIdMismatch.into());
            }
            if data.len() < 8 {
                return #fallback_maybe;
            }

            dispatch(program_id, accounts, data)
        }

        /// Module representing the program.
        pub mod program {
            use super::*;

            /// Type representing the program.
            #[derive(Clone)]
            pub struct #name;

            impl anchor_lang::Id for #name {
                fn id() -> Pubkey {
                    ID
                }
            }
        }
    }
}