runmat-vm 0.4.5

RunMat virtual machine and bytecode interpreter
Documentation 
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use crate::object::resolve as obj_resolve;
use runmat_builtins::Value;
use runmat_gc::gc_record_write;
use runmat_runtime::RuntimeError;

pub async fn dispatch_object(
    instr: &crate::bytecode::Instr,
    stack: &mut Vec<Value>,
) -> Result<bool, RuntimeError> {
    match instr {
        crate::bytecode::Instr::LoadMember(field) => {
            let base = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let value = obj_resolve::load_member(base, field.clone(), false).await?;
            stack.push(value);
            Ok(true)
        }
        crate::bytecode::Instr::LoadMemberOrInit(field) => {
            let base = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let value = obj_resolve::load_member(base, field.clone(), true).await?;
            stack.push(value);
            Ok(true)
        }
        crate::bytecode::Instr::LoadMemberDynamic => {
            let name_val = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let base = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let name: String = (&name_val).try_into()?;
            let value = obj_resolve::load_member_dynamic(base, name, false).await?;
            stack.push(value);
            Ok(true)
        }
        crate::bytecode::Instr::LoadMemberDynamicOrInit => {
            let name_val = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let base = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let name: String = (&name_val).try_into()?;
            let value = obj_resolve::load_member_dynamic(base, name, true).await?;
            stack.push(value);
            Ok(true)
        }
        crate::bytecode::Instr::StoreMember(field) => {
            let rhs = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let base = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let value = obj_resolve::store_member(base, field.clone(), rhs, false, |oldv, newv| {
                gc_record_write(oldv, newv);
            })
            .await?;
            stack.push(value);
            Ok(true)
        }
        crate::bytecode::Instr::StoreMemberOrInit(field) => {
            let rhs = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let base = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let value = obj_resolve::store_member(base, field.clone(), rhs, true, |oldv, newv| {
                gc_record_write(oldv, newv);
            })
            .await?;
            stack.push(value);
            Ok(true)
        }
        crate::bytecode::Instr::StoreMemberDynamic => {
            let rhs = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let name_val = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let base = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let name: String = (&name_val).try_into()?;
            let value = obj_resolve::store_member_dynamic(base, name, rhs, false, |oldv, newv| {
                gc_record_write(oldv, newv);
            })
            .await?;
            stack.push(value);
            Ok(true)
        }
        crate::bytecode::Instr::StoreMemberDynamicOrInit => {
            let rhs = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let name_val = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let base = stack.pop().ok_or(crate::interpreter::errors::mex(
                "StackUnderflow",
                "stack underflow",
            ))?;
            let name: String = (&name_val).try_into()?;
            let value = obj_resolve::store_member_dynamic(base, name, rhs, true, |oldv, newv| {
                gc_record_write(oldv, newv);
            })
            .await?;
            stack.push(value);
            Ok(true)
        }
        _ => Ok(false),
    }
}