Also exclude the parser from compilation, since its binary size is almost 1MB,...

Also exclude the parser from compilation, since its binary size is almost 1MB, but it only contributes a couple of percent to the overall runtime.

Cython/Compiler/Scanning.pxd

@@ -14,13 +14,15 @@ cdef class Method:
     cdef dict kwargs
     cdef readonly object __name__  # for tracing the scanner
 
+## methods commented with '##' out are used by Parsing.py when compiled.
+
 @cython.final
 cdef class CompileTimeScope:
     cdef public dict entries
     cdef public CompileTimeScope outer
-    cdef declare(self, name, value)
-    cdef lookup_here(self, name)
-    cpdef lookup(self, name)
+    ##cdef declare(self, name, value)
+    ##cdef lookup_here(self, name)
+    ##cpdef lookup(self, name)
 
 @cython.final
 cdef class PyrexScanner(Scanner):
@@ -51,15 +53,15 @@ cdef class PyrexScanner(Scanner):
     @cython.locals(current_level=cython.long, new_level=cython.long)
     cpdef indentation_action(self, text)
     #cpdef eof_action(self, text)
-    cdef next(self)
-    cdef peek(self)
+    ##cdef next(self)
+    ##cdef peek(self)
     #cpdef put_back(self, sy, systring)
     #cdef unread(self, token, value)
-    cdef bint expect(self, what, message = *) except -2
-    cdef expect_keyword(self, what, message = *)
-    cdef expected(self, what, message = *)
-    cdef expect_indent(self)
-    cdef expect_dedent(self)
-    cdef expect_newline(self, message=*, bint ignore_semicolon=*)
-    cdef int enter_async(self) except -1
-    cdef int exit_async(self) except -1
+    ##cdef bint expect(self, what, message = *) except -2
+    ##cdef expect_keyword(self, what, message = *)
+    ##cdef expected(self, what, message = *)
+    ##cdef expect_indent(self)
+    ##cdef expect_dedent(self)
+    ##cdef expect_newline(self, message=*, bint ignore_semicolon=*)
+    ##cdef int enter_async(self) except -1
+    ##cdef int exit_async(self) except -1

Cython/Plex/Scanners.pxd

@@ -28,18 +28,23 @@ cdef class Scanner:
 
     cdef public level
 
+    @cython.final
     @cython.locals(input_state=long)
     cdef next_char(self)
     @cython.locals(action=Action)
     cpdef tuple read(self)
+    @cython.final
     cdef tuple scan_a_token(self)
-    cdef tuple position(self)
+    ##cdef tuple position(self)  # used frequently by Parsing.py
 
+    @cython.final
     @cython.locals(cur_pos=Py_ssize_t, cur_line=Py_ssize_t, cur_line_start=Py_ssize_t,
                    input_state=long, next_pos=Py_ssize_t, state=dict,
                    buf_start_pos=Py_ssize_t, buf_len=Py_ssize_t, buf_index=Py_ssize_t,
                    trace=bint, discard=Py_ssize_t, data=unicode, buffer=unicode)
     cdef run_machine_inlined(self)
 
+    @cython.final
     cdef begin(self, state)
+    @cython.final
     cdef produce(self, value, text = *)

setup.py

@@ -86,7 +86,6 @@ def compile_cython_modules(profile=False, compile_more=False, cython_with_refnan
         "Cython.Plex.Scanners",
         "Cython.Plex.Actions",
         "Cython.Compiler.Scanning",
-        "Cython.Compiler.Parsing",
         "Cython.Compiler.Visitor",
         "Cython.Compiler.FlowControl",
         "Cython.Runtime.refnanny",
@@ -98,6 +97,7 @@ def compile_cython_modules(profile=False, compile_more=False, cython_with_refnan
             "Cython.StringIOTree",
             "Cython.Compiler.Code",
             "Cython.Compiler.Lexicon",
+            "Cython.Compiler.Parsing",
             "Cython.Compiler.Pythran",
             "Cython.Build.Dependencies",
             "Cython.Compiler.ParseTreeTransforms",