Split functions into many files, remove string from std.

src/abacus.cpp

@@ -44,14 +44,6 @@ void abacus::add_operator_postfix(const std::string& op, const std::string& func
 }
 
 void abacus::add_standard() {
-    add_function("quit", function_quit, "()->unit");
-    add_function("request_precision", function_request_precision, "(num)->unit");
-
-    add_function("print", function_print_string, "(str)->unit");
-    add_function("to_string", function_to_string_num, "(num)->str");
-    add_function("to_string", function_to_string_bool, "(bool)->str");
-    add_function("to_string", function_to_string_unit, "(unit)->str");
-
     add_function("lt", function_lt, "(num, num)->num");
     add_function("lte", function_lte, "(num, num)->num");
     add_function("equals", function_equals, "(num, num)->num");

src/main.cpp

@@ -7,7 +7,8 @@
 #include <sstream>
 #include "types.hpp"
 #include "ref.hpp"
-#include "function_utils.hpp"
+#include "repl_functions.hpp"
+#include "string_functions.hpp"
 #include "abacus.hpp"
 extern "C" {
 #include "libabacus.h"
@@ -48,6 +49,14 @@ int main() {
     size_t index = 0;
     
     ab.add_standard();
+    ab.add_function("quit", function_quit, "()->unit");
+    ab.add_function("request_precision", function_request_precision, "(num)->unit");
+
+    ab.add_function("print", function_print_string, "(str)->unit");
+    ab.add_function("to_string", function_to_string_num, "(num)->str");
+    ab.add_function("to_string", function_to_string_bool, "(bool)->str");
+    ab.add_function("to_string", function_to_string_unit, "(unit)->str");
+
     run_rc(ab);
     while(!close_requested) {
         char* data = readline(" > ");

src/operator_functions.cpp

@@ -1,4 +1,11 @@
-#include "functions.hpp"
+#include "operator_functions.hpp"
+#include <mpfr.h>
+#include "types.hpp"
+#include "ref.hpp"
+#include "util.hpp"
+extern "C" {
+#include "util.h"
+}
 
 FUNCTION_MPFR2(plus, add)
 FUNCTION_MPFR2(minus, sub)

src/other_functions.cpp

@@ -1,4 +1,7 @@
-#include "functions.hpp"
+#include "other_functions.hpp"
+#include <mpfr.h>
+#include "types.hpp"
+#include "util.hpp"
 
 FUNCTION_MPFR(ln, log);
 FUNCTION_MPFR(exp, exp);

src/string_functions.cpp

@@ -1,4 +1,7 @@
-#include "functions.hpp"
+#include "string_functions.hpp"
+#include "ref.hpp"
+#include "types.hpp"
+#include "util.hpp"
 #include <string>
 #include <iostream>
 

src/trig_functions.cpp

@@ -1,4 +1,8 @@
-#include "functions.hpp"
+#include "trig_functions.hpp"
+#include <mpfr.h>
+#include "ref.hpp"
+#include "types.hpp"
+#include "util.hpp"
 
 FUNCTION_MPFR(sin, sin);
 FUNCTION_MPFR(cos, cos);