diff --git a/schala-lang/language/src/ast.rs b/schala-lang/language/src/ast.rs
index a8e73a5..dd4840f 100644
--- a/schala-lang/language/src/ast.rs
+++ b/schala-lang/language/src/ast.rs
@@ -1,7 +1,6 @@
 use std::rc::Rc;
 use std::convert::From;
 
-use crate::builtin::{BinOp};
 use crate::typechecking::TypeData;
 
 mod operators;
diff --git a/schala-lang/language/src/ast/operators.rs b/schala-lang/language/src/ast/operators.rs
index 64f4e2c..217a1a4 100644
--- a/schala-lang/language/src/ast/operators.rs
+++ b/schala-lang/language/src/ast/operators.rs
@@ -1,6 +1,7 @@
 use std::rc::Rc;
 use std::str::FromStr;
 
+use crate::tokenizing::TokenKind;
 use crate::builtin::Builtin;
 
 #[derive(Debug, PartialEq, Clone)]
@@ -39,3 +40,72 @@ impl FromStr for PrefixOp {
     builtin.map(|builtin| PrefixOp { sigil: Rc::new(s.to_string()), builtin: Some(builtin) })
   }
 }
+
+#[derive(Debug, PartialEq, Clone)]
+pub struct BinOp {
+  sigil: Rc<String>,
+  pub builtin: Option<Builtin>,
+}
+
+impl BinOp {
+  pub fn from_sigil(sigil: &str) -> BinOp {
+    let builtin = Builtin::from_str(sigil).ok();
+    BinOp { sigil: Rc::new(sigil.to_string()), builtin }
+  }
+  pub fn sigil(&self) -> &Rc<String> {
+    &self.sigil
+  }
+  pub fn from_sigil_token(tok: &TokenKind) -> Option<BinOp> {
+    let s = token_kind_to_sigil(tok)?;
+    Some(BinOp::from_sigil(s))
+  }
+
+  pub fn min_precedence() -> i32 {
+    i32::min_value()
+  }
+  pub fn get_precedence_from_token(op_tok: &TokenKind) -> Option<i32> {
+    let s = token_kind_to_sigil(op_tok)?;
+    Some(binop_precedences(s))
+  }
+
+  pub fn get_precedence(&self) -> i32 {
+    binop_precedences(&self.sigil)
+  }
+}
+
+fn token_kind_to_sigil<'a>(tok: &'a TokenKind) -> Option<&'a str> {
+  use self::TokenKind::*;
+  Some(match tok {
+    Operator(op) => op.as_str(),
+    Period => ".",
+    Pipe => "|",
+    Slash => "/",
+    LAngleBracket => "<",
+    RAngleBracket => ">",
+    Equals => "=",
+    _ => return None
+  })
+}
+
+fn binop_precedences(s: &str) -> i32 {
+  let default = 10_000_000;
+  match s {
+    "+" => 10,
+    "-" => 10,
+    "*" =>  20,
+    "/" =>  20,
+    "%" =>  20,
+    "++" => 30,
+    "^" =>  30,
+    "&" =>  20,
+    "|" => 20,
+    ">" => 20,
+    ">=" => 20,
+    "<" =>  20,
+    "<=" => 20,
+    "==" => 40,
+    "=" =>  10,
+    "<=>" => 30,
+    _ => default,
+  }
+}
diff --git a/schala-lang/language/src/builtin.rs b/schala-lang/language/src/builtin.rs
index afca3f7..09176cd 100644
--- a/schala-lang/language/src/builtin.rs
+++ b/schala-lang/language/src/builtin.rs
@@ -1,8 +1,5 @@
-use std::rc::Rc;
-use std::collections::HashMap;
 use std::str::FromStr;
 
-use crate::tokenizing::TokenKind;
 use crate::typechecking::{TypeConst, Type};
 
 #[derive(Debug, Clone, Copy, PartialEq)]
@@ -103,86 +100,3 @@ impl FromStr for Builtin {
     })
   }
 }
-
-#[derive(Debug, PartialEq, Clone)]
-pub struct BinOp {
-  sigil: Rc<String>,
-  pub builtin: Option<Builtin>,
-}
-
-fn token_kind_to_sigil<'a>(tok: &'a TokenKind) -> Option<&'a str> {
-  use self::TokenKind::*;
-  Some(match tok {
-    Operator(op) => op.as_str(),
-    Period => ".",
-    Pipe => "|",
-    Slash => "/",
-    LAngleBracket => "<",
-    RAngleBracket => ">",
-    Equals => "=",
-    _ => return None
-  })
-}
-
-impl BinOp {
-  pub fn from_sigil(sigil: &str) -> BinOp {
-    let builtin = Builtin::from_str(sigil).ok();
-    BinOp { sigil: Rc::new(sigil.to_string()), builtin }
-  }
-  pub fn sigil(&self) -> &Rc<String> {
-    &self.sigil
-  }
-  pub fn from_sigil_token(tok: &TokenKind) -> Option<BinOp> {
-    let s = token_kind_to_sigil(tok)?;
-    Some(BinOp::from_sigil(s))
-  }
-
-  pub fn min_precedence() -> i32 {
-    i32::min_value()
-  }
-  pub fn get_precedence_from_token(op_tok: &TokenKind) -> Option<i32> {
-    let s = token_kind_to_sigil(op_tok)?;
-    let default = 10_000_000;
-    Some(BINOPS.get(s).map(|x| x.2.clone()).unwrap_or_else(|| {
-      default
-    }))
-  }
-
-  pub fn get_precedence(&self) -> i32 {
-    let s: &str = &self.sigil;
-    let default = 10_000_000;
-    BINOPS.get(s).map(|x| x.2.clone()).unwrap_or_else(|| {
-      default
-    })
-  }
-}
-
-
-//TODO mapping between sigil string and precedence should live in ast.rs
-//mapping between operation and type should live here in builtins.rs
-
-/* the second tuple member is a placeholder for when I want to make evaluation rules tied to the
- * binop definition */
-//TODO some of these types are going to have to be adjusted
-lazy_static! {
-  static ref BINOPS: HashMap<&'static str, (Type, (), i32)> =
-    hashmap! {
-      "+" => (ty!(Nat -> Nat -> Nat), (), 10),
-      "-" => (ty!(Nat -> Nat -> Nat), (), 10),
-      "*" => (ty!(Nat -> Nat -> Nat), (), 20),
-      "/" => (ty!(Nat -> Nat -> Float), (), 20),
-      "quot" => (ty!(Nat -> Nat -> Nat), (), 20),
-      "%" => (ty!(Nat -> Nat -> Nat), (), 20),
-      "++" => (ty!(StringT -> StringT -> StringT), (), 30),
-      "^" => (ty!(Nat -> Nat -> Nat), (), 20),
-      "&" => (ty!(Nat -> Nat -> Nat), (), 20),
-      "|" => (ty!(Nat -> Nat -> Nat), (), 20),
-      ">" => (ty!(Nat -> Nat -> Bool), (), 20),
-      ">=" => (ty!(Nat -> Nat -> Bool), (), 20),
-      "<" => (ty!(Nat -> Nat -> Bool), (), 20),
-      "<=" => (ty!(Nat -> Nat -> Bool), (), 20),
-      "==" => (ty!(Nat -> Nat -> Bool), (), 20),
-      "=" => (ty!(Unit), (), 20), //TODO not sure what the type of this should be b/c special fmr
-      "<=>" => (ty!(Nat -> Nat -> Ordering), (), 20), //TODO figure out how to treat Order
-    };
-}
diff --git a/schala-lang/language/src/parsing.rs b/schala-lang/language/src/parsing.rs
index 0b4e557..26b83a5 100644
--- a/schala-lang/language/src/parsing.rs
+++ b/schala-lang/language/src/parsing.rs
@@ -153,8 +153,6 @@ use crate::tokenizing::TokenKind::*;
 
 use crate::ast::*;
 
-use crate::builtin::{BinOp};
-
 /// Represents a parsing error
 #[derive(Debug)]
 pub struct ParseError {
diff --git a/schala-lang/language/src/parsing/test.rs b/schala-lang/language/src/parsing/test.rs
index 85806a5..33363eb 100644
--- a/schala-lang/language/src/parsing/test.rs
+++ b/schala-lang/language/src/parsing/test.rs
@@ -4,8 +4,7 @@ use std::str::FromStr;
 
 use super::tokenize;
 use super::ParseResult;
-use crate::builtin::{BinOp};
-use crate::ast::{AST, Meta, Expression, Statement, IfExpressionBody, Discriminator, Pattern, PatternLiteral, TypeBody, Enumerator, ForBody, InvocationArgument, FormalParam, PrefixOp};
+use crate::ast::{AST, Meta, Expression, Statement, IfExpressionBody, Discriminator, Pattern, PatternLiteral, TypeBody, Enumerator, ForBody, InvocationArgument, FormalParam, PrefixOp, BinOp};
 use super::Statement::*;
 use super::Declaration::*;
 use super::Signature;
diff --git a/schala-lang/language/src/reduced_ast.rs b/schala-lang/language/src/reduced_ast.rs
index 02939fa..7302b26 100644
--- a/schala-lang/language/src/reduced_ast.rs
+++ b/schala-lang/language/src/reduced_ast.rs
@@ -17,7 +17,7 @@ use std::str::FromStr;
 
 use crate::ast::*;
 use crate::symbol_table::{Symbol, SymbolSpec, SymbolTable};
-use crate::builtin::{BinOp, Builtin};
+use crate::builtin::Builtin;
 
 #[derive(Debug)]
 pub struct ReducedAST(pub Vec<Stmt>);
diff --git a/schala-lang/language/src/typechecking.rs b/schala-lang/language/src/typechecking.rs
index 7e7e73f..435f19d 100644
--- a/schala-lang/language/src/typechecking.rs
+++ b/schala-lang/language/src/typechecking.rs
@@ -5,7 +5,6 @@ use ena::unify::{UnifyKey, InPlaceUnificationTable, UnificationTable, EqUnifyVal
 
 use crate::ast::*;
 use crate::util::ScopeStack;
-use crate::builtin::{BinOp};
 
 
 #[derive(Debug, Clone, PartialEq)]