Simplified file structure

src/core/Evaluate.go

@@ -0,0 +1,25 @@
+package core
+
+import (
+	"git.akyoto.dev/cli/q/src/cpu"
+	"git.akyoto.dev/cli/q/src/expression"
+	"git.akyoto.dev/cli/q/src/token"
+	"git.akyoto.dev/cli/q/src/types"
+)
+
+// Evaluate evaluates an expression and returns a register that contains the value of the expression.
+func (f *Function) Evaluate(expr *expression.Expression) (types.Type, cpu.Register, error) {
+	if expr.Token.Kind == token.Identifier {
+		name := expr.Token.Text(f.File.Bytes)
+		variable := f.VariableByName(name)
+
+		if variable.Alive == 1 {
+			f.UseVariable(variable)
+			return variable.Type, variable.Register, nil
+		}
+	}
+
+	tmp := f.NewRegister()
+	typ, err := f.ExpressionToRegister(expr, tmp)
+	return typ, tmp, err
+}