make deftag/defmacro macros, not special forms

hy/compiler.py

@@ -831,6 +831,7 @@ def compile_raise_expression(self, expr):
     @builds("try")
     @checkargs(min=2)
     def compile_try_expression(self, expr):
+        expr = copy.deepcopy(expr)
         expr.pop(0)  # try
 
         # (try something…)
@@ -1125,6 +1126,7 @@ def compile_yield_expression(self, expr):
 
     @builds("import")
     def compile_import_expression(self, expr):
+        expr = copy.deepcopy(expr)
         def _compile_import(expr, module, names=None, importer=asty.Import):
             if not names:
                 names = [ast.alias(name=ast_str(module), asname=None)]
@@ -2054,63 +2056,6 @@ def rewire_init(expr):
             bases=bases_expr,
             body=body.stmts)
 
-    def _compile_time_hack(self, expression):
-        """Compile-time hack: we want to get our new macro now
-        We must provide __name__ in the namespace to make the Python
-        compiler set the __module__ attribute of the macro function."""
-
-        hy.importer.hy_eval(copy.deepcopy(expression),
-                            compile_time_ns(self.module_name),
-                            self.module_name)
-
-        # We really want to have a `hy` import to get hy.macro in
-        ret = self.compile(expression)
-        ret.add_imports('hy', [None])
-        return ret
-
-    @builds("defmacro")
-    @checkargs(min=1)
-    def compile_macro(self, expression):
-        expression.pop(0)
-        name = expression.pop(0)
-        if not isinstance(name, HySymbol):
-            raise HyTypeError(name, ("received a `%s' instead of a symbol "
-                                     "for macro name" % type(name).__name__))
-        name = HyString(name).replace(name)
-        for kw in ("&kwonly", "&kwargs", "&key"):
-            if kw in expression[0]:
-                raise HyTypeError(name, "macros cannot use %s" % kw)
-        expression[0].insert(0, HySymbol('&name'))
-        new_expression = HyExpression([
-            HyExpression([HySymbol("hy.macros.macro"), name]),
-            HyExpression([HySymbol("fn")] + expression),
-        ]).replace(expression)
-
-        ret = self._compile_time_hack(new_expression)
-
-        return ret
-
-    @builds("deftag")
-    @checkargs(min=2)
-    def compile_tag_macro(self, expression):
-        expression.pop(0)
-        name = expression.pop(0)
-        if name == ":" or name == "&":
-            raise NameError("%s can't be used as a tag macro name" % name)
-        if not isinstance(name, HySymbol) and not isinstance(name, HyString):
-            raise HyTypeError(name,
-                              ("received a `%s' instead of a symbol "
-                               "for tag macro name" % type(name).__name__))
-        name = HyString(name).replace(name)
-        new_expression = HyExpression([
-            HyExpression([HySymbol("hy.macros.tag"), name]),
-            HyExpression([HySymbol("fn")] + expression),
-        ]).replace(expression)
-
-        ret = self._compile_time_hack(new_expression)
-
-        return ret
-
     @builds("dispatch_tag_macro")
     @checkargs(exact=2)
     def compile_dispatch_tag_macro(self, expression):

hy/core/bootstrap.hy

@@ -6,6 +6,30 @@
 ;;; These macros are the essential hy macros.
 ;;; They are automatically required everywhere, even inside hy.core modules.
 
+(eval-and-compile
+  (import hy)
+  ((hy.macros.macro "defmacro")
+   (fn [&name macro-name lambda-list &rest body]
+     "the defmacro macro"
+     (if* (not (isinstance macro-name hy.models.HySymbol))
+          (raise
+            (hy.errors.HyTypeError
+              macro-name
+              (% "received a `%s' instead of a symbol for macro name"
+                 (. (type name)
+                    __name__)))))
+     (for* [kw '[&kwonly &kwargs &key]]
+       (if* (in kw lambda-list)
+            (raise (hy.errors.HyTypeError macro-name
+                                          (% "macros cannot use %s"
+                                             kw)))))
+     ;; this looks familiar...
+     `(eval-and-compile
+        (import hy)
+        ((hy.macros.macro ~(str macro-name))
+         (fn ~(+ `[&name] lambda-list)
+           ~@body))))))
+
 (defmacro if [&rest args]
   "if with elif"
   (setv n (len args))
@@ -16,6 +40,23 @@
                   ~(get args 1)
                   (if ~@(cut args 2))))))
 
+(defmacro deftag [tag-name lambda-list &rest body]
+  (if (and (not (isinstance tag-name hy.models.HySymbol))
+           (not (isinstance tag-name hy.models.HyString)))
+      (raise (hy.errors.HyTypeError
+               tag-name
+               (% "received a `%s' instead of a symbol for tag macro name"
+                  (. (type tag-name) __name__)))))
+  (if (or (= tag-name ":")
+          (= tag-name "&"))
+      (raise (NameError (% "%s can't be used as a tag macro name" tag-name))))
+  (setv tag-name (.replace (hy.models.HyString tag-name)
+                           tag-name))
+  `(eval-and-compile
+     (import hy)
+     ((hy.macros.tag ~tag-name)
+      (fn ~lambda-list ~@body))))
+
 (defmacro macro-error [location reason]
   "error out properly within a macro"
   `(raise (hy.errors.HyMacroExpansionError ~location ~reason)))

hy/errors.py

@@ -81,7 +81,7 @@ def __str__(self):
 
         result += colored.yellow("%s: %s\n\n" %
                                  (self.__class__.__name__,
-                                  self.message.encode('utf-8')))
+                                  self.message))
 
         return result
 

hy/macros.py

@@ -34,6 +34,7 @@ def macro(name):
 
     """
     def _(fn):
+        fn.__name__ = '({})'.format(name)
         try:
             argspec = getargspec(fn)
             fn._hy_macro_pass_compiler = argspec.keywords is not None
@@ -63,6 +64,7 @@ def tag(name):
 
     """
     def _(fn):
+        fn.__name__ = '#'+name
         module_name = fn.__module__
         if module_name.startswith("hy.core"):
             module_name = None