type conversion ->string functions

1 files changed, 19 insertions, 0 deletions

diff --git a/std.py b/std.py
index 0cd5aee..1476824 100644
--- a/std.py
+++ b/std.py
@@ -114,6 +114,13 @@ def std_is_bool(arg):
     else:
         return NebBool(False)
 
+# type conversion
+def std_literal_to_string(arg):
+    if isinstance(arg, NebString):
+        return arg
+    else:
+        return NebString(f"{arg.value}".lower())
+
 # shell
 def std_shell(arg):
     assert isinstance(arg, NebString)
@@ -195,6 +202,18 @@ def build_std():
     is_bool = FuncImpl(NebFunction("string?", [NebAny], NebBool), std_is_bool)
     STD["bool?"] = [is_bool]
 
+    # type conversion
+    int_to_string = FuncImpl(NebFunction("int->string", [NebInt], NebString), std_literal_to_string)
+    STD["int->string"] = [int_to_string]
+    float_to_string = FuncImpl(NebFunction("float->string", [NebFloat], NebString), std_literal_to_string)
+    STD["float->string"] = [float_to_string]
+    number_to_string = FuncImpl(NebFunction("number->string", [NebNumber], NebString), std_literal_to_string)
+    STD["number->string"] = [number_to_string]
+    bool_to_string = FuncImpl(NebFunction("bool->string", [NebBool], NebString), std_literal_to_string)
+    STD["bool->string"] = [bool_to_string]
+    to_string = FuncImpl(NebFunction("->string", [NebLiteral], NebString), std_literal_to_string)
+    STD["->string"] = [to_string]
+
     # shell
     shell_string = FuncImpl(NebFunction("$", [NebString], NebBool), std_shell)
     STD["$"] = [shell_string]