package core

import (
	"git.akyoto.dev/cli/q/src/build/asm"
	"git.akyoto.dev/cli/q/src/build/errors"
	"git.akyoto.dev/cli/q/src/build/expression"
	"git.akyoto.dev/cli/q/src/build/sizeof"
	"git.akyoto.dev/cli/q/src/build/types"
)

// ExpressionToMemory puts the result of an expression into the specified memory address.
func (f *Function) ExpressionToMemory(node *expression.Expression, memory asm.Memory) (types.Type, error) {
	if node.IsLeaf() && node.Token.IsNumeric() {
		number, err := f.Number(node.Token)

		if err != nil {
			return types.Invalid, err
		}

		size := byte(sizeof.Signed(int64(number)))

		if size != memory.Length {
			return types.Invalid, errors.New(&errors.NumberExceedsBounds{Number: number, ExpectedSize: memory.Length, Size: size}, f.File, node.Token.Position)
		}

		f.MemoryNumber(asm.STORE, memory, number)
		return types.Int, nil
	}

	tmp := f.NewRegister()
	defer f.FreeRegister(tmp)
	typ, err := f.ExpressionToRegister(node, tmp)
	f.MemoryRegister(asm.STORE, memory, tmp)
	return typ, err
}