py/lexer: Rewrite mp_lexer_new_from_str_len in terms of mp_reader_mem.

py/lexer.c

@@ -28,6 +28,7 @@
 #include <assert.h>
 
 #include "py/mpstate.h"
+#include "py/reader.h"
 #include "py/lexer.h"
 #include "py/runtime.h"
 
@@ -750,6 +751,14 @@ mp_lexer_t *mp_lexer_new(qstr src_name, void *stream_data, mp_lexer_stream_next_
     return lex;
 }
 
+mp_lexer_t *mp_lexer_new_from_str_len(qstr src_name, const char *str, mp_uint_t len, mp_uint_t free_len) {
+    mp_reader_t reader;
+    if (!mp_reader_new_mem(&reader, (const byte*)str, len, free_len)) {
+        return NULL;
+    }
+    return mp_lexer_new(src_name, reader.data, (mp_lexer_stream_next_byte_t)reader.readbyte, (mp_lexer_stream_close_t)reader.close);
+}
+
 void mp_lexer_free(mp_lexer_t *lex) {
     if (lex) {
         if (lex->stream_close) {

py/lexerstr.c

-/*
- * This file is part of the Micro Python project, http://micropython.org/
- *
- * The MIT License (MIT)
- *
- * Copyright (c) 2013, 2014 Damien P. George
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "py/lexer.h"
-
-#if MICROPY_ENABLE_COMPILER
-
-typedef struct _mp_lexer_str_buf_t {
-    mp_uint_t free_len;         // if > 0, src_beg will be freed when done by: m_free(src_beg, free_len)
-    const char *src_beg;        // beginning of source
-    const char *src_cur;        // current location in source
-    const char *src_end;        // end (exclusive) of source
-} mp_lexer_str_buf_t;
-
-STATIC mp_uint_t str_buf_next_byte(mp_lexer_str_buf_t *sb) {
-    if (sb->src_cur < sb->src_end) {
-        return *sb->src_cur++;
-    } else {
-        return MP_LEXER_EOF;
-    }
-}
-
-STATIC void str_buf_free(mp_lexer_str_buf_t *sb) {
-    if (sb->free_len > 0) {
-        m_del(char, (char*)sb->src_beg, sb->free_len);
-    }
-    m_del_obj(mp_lexer_str_buf_t, sb);
-}
-
-mp_lexer_t *mp_lexer_new_from_str_len(qstr src_name, const char *str, mp_uint_t len, mp_uint_t free_len) {
-    mp_lexer_str_buf_t *sb = m_new_obj_maybe(mp_lexer_str_buf_t);
-    if (sb == NULL) {
-        return NULL;
-    }
-    sb->free_len = free_len;
-    sb->src_beg = str;
-    sb->src_cur = str;
-    sb->src_end = str + len;
-    return mp_lexer_new(src_name, sb, (mp_lexer_stream_next_byte_t)str_buf_next_byte, (mp_lexer_stream_close_t)str_buf_free);
-}
-
-#endif // MICROPY_ENABLE_COMPILER

py/py.mk

@@ -115,7 +115,6 @@ PY_O_BASENAME = \
 	mpz.o \
 	reader.o \
 	lexer.o \
-	lexerstr.o \
 	lexerunix.o \
 	parse.o \
 	scope.o \