Merge branch 'builtins' of github.com:chipaca/micropython into chipaca-builtins

Added some checks for number of arguments.

Conflicts:
	py/mpqstrraw.h

7 files changed, 189 insertions, 0 deletions

diff --git a/py/mpqstrraw.h b/py/mpqstrraw.h
index 06f83ddf09..356c911238 100644
--- a/py/mpqstrraw.h
+++ b/py/mpqstrraw.h
@@ -42,7 +42,9 @@ Q(chr)
 Q(complex)
 Q(dict)
 Q(divmod)
+Q(enumerate)
 Q(eval)
+Q(filter)
 Q(float)
 Q(hash)
 Q(int)
@@ -51,6 +53,7 @@ Q(issubclass)
 Q(iter)
 Q(len)
 Q(list)
+Q(map)
 Q(max)
 Q(min)
 Q(next)
diff --git a/py/obj.h b/py/obj.h
index 6dcc6827e1..c2182863a1 100644
--- a/py/obj.h
+++ b/py/obj.h
@@ -294,6 +294,15 @@ void mp_obj_list_get(mp_obj_t self_in, uint *len, mp_obj_t **items);
 void mp_obj_list_store(mp_obj_t self_in, mp_obj_t index, mp_obj_t value);
 mp_obj_t mp_obj_list_sort(mp_obj_t args, struct _mp_map_t *kwargs);
 
+// map (the python builtin, not the dict implementation detail)
+extern const mp_obj_type_t map_type;
+
+// enumerate
+extern const mp_obj_type_t enumerate_type;
+
+// filter
+extern const mp_obj_type_t filter_type;
+
 // dict
 extern const mp_obj_type_t dict_type;
 uint mp_obj_dict_len(mp_obj_t self_in);
diff --git a/py/objenumerate.c b/py/objenumerate.c
new file mode 100644
index 0000000000..5bfd8a3370
--- /dev/null
+++ b/py/objenumerate.c
@@ -0,0 +1,53 @@
+#include <stdlib.h>
+#include <assert.h>
+
+#include "misc.h"
+#include "mpconfig.h"
+#include "obj.h"
+#include "runtime.h"
+
+typedef struct _mp_obj_enumerate_t {
+    mp_obj_base_t base;
+    mp_obj_t iter;
+    machine_int_t cur;
+} mp_obj_enumerate_t;
+
+static mp_obj_t enumerate_getiter(mp_obj_t self_in) {
+    return self_in;
+}
+
+static mp_obj_t enumerate_iternext(mp_obj_t self_in);
+
+/* TODO: enumerate is one of the ones that can take args or kwargs.
+   Sticking to args for now */
+static mp_obj_t enumerate_make_new(mp_obj_t type_in, int n_args, const mp_obj_t *args) {
+    /* NOTE: args are backwards */
+    assert(n_args > 0);
+    args += n_args - 1;
+    mp_obj_enumerate_t *o = m_new_obj(mp_obj_enumerate_t);
+    o->base.type = &enumerate_type;
+    o->iter = rt_getiter(args[0]);
+    o->cur = n_args > 1 ? mp_obj_get_int(args[-1]) : 0;
+
+    return o;
+}
+
+const mp_obj_type_t enumerate_type = {
+    { &mp_const_type },
+    "enumerate",
+    .make_new = enumerate_make_new,
+    .iternext = enumerate_iternext,
+    .getiter = enumerate_getiter,
+};
+
+static mp_obj_t enumerate_iternext(mp_obj_t self_in) {
+    assert(MP_OBJ_IS_TYPE(self_in, &enumerate_type));
+    mp_obj_enumerate_t *self = self_in;
+    mp_obj_t next = rt_iternext(self->iter);
+    if (next == mp_const_stop_iteration) {
+        return mp_const_stop_iteration;
+    } else {
+        mp_obj_t items[] = {MP_OBJ_NEW_SMALL_INT(self->cur++), next};
+        return mp_obj_new_tuple(2, items);
+    }
+}
diff --git a/py/objfilter.c b/py/objfilter.c
new file mode 100644
index 0000000000..18225ac102
--- /dev/null
+++ b/py/objfilter.c
@@ -0,0 +1,58 @@
+#include <stdlib.h>
+#include <assert.h>
+
+#include "nlr.h"
+#include "misc.h"
+#include "mpconfig.h"
+#include "mpqstr.h"
+#include "obj.h"
+#include "runtime.h"
+
+typedef struct _mp_obj_filter_t {
+    mp_obj_base_t base;
+    mp_obj_t fun;
+    mp_obj_t iter;
+} mp_obj_filter_t;
+
+static mp_obj_t filter_make_new(mp_obj_t type_in, int n_args, const mp_obj_t *args) {
+    /* NOTE: args are backwards */
+    if (n_args != 2) {
+        nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "filter expected 2 arguments"));
+    }
+    assert(n_args == 2);
+    mp_obj_filter_t *o = m_new_obj(mp_obj_filter_t);
+    o->base.type = &filter_type;
+    o->fun = args[1];
+    o->iter = rt_getiter(args[0]);
+    return o;
+}
+
+static mp_obj_t filter_getiter(mp_obj_t self_in) {
+    return self_in;
+}
+
+static mp_obj_t filter_iternext(mp_obj_t self_in) {
+    assert(MP_OBJ_IS_TYPE(self_in, &filter_type));
+    mp_obj_filter_t *self = self_in;
+    mp_obj_t next;
+    while ((next = rt_iternext(self->iter)) != mp_const_stop_iteration) {
+        mp_obj_t val;
+        if (self->fun != mp_const_none) {
+            val = rt_call_function_n(self->fun, 1, &next);
+        } else {
+            val = next;
+        }
+        if (rt_is_true(val)) {
+            return next;
+        }
+    }
+    return mp_const_stop_iteration;
+}
+
+const mp_obj_type_t filter_type = {
+    { &mp_const_type },
+    "filter",
+    .make_new = filter_make_new,
+    .getiter = filter_getiter,
+    .iternext = filter_iternext,
+};
diff --git a/py/objmap.c b/py/objmap.c
new file mode 100644
index 0000000000..365735283a
--- /dev/null
+++ b/py/objmap.c
@@ -0,0 +1,60 @@
+#include <stdlib.h>
+#include <assert.h>
+
+#include "nlr.h"
+#include "misc.h"
+#include "mpconfig.h"
+#include "mpqstr.h"
+#include "obj.h"
+#include "runtime.h"
+
+typedef struct _mp_obj_map_t {
+    mp_obj_base_t base;
+    machine_uint_t n_iters;
+    mp_obj_t fun;
+    mp_obj_t iters[];
+} mp_obj_map_t;
+
+static mp_obj_t map_make_new(mp_obj_t type_in, int n_args, const mp_obj_t *args) {
+    /* NOTE: args are backwards */
+    if (n_args < 2) {
+        nlr_jump(mp_obj_new_exception_msg(MP_QSTR_TypeError, "map must have at least 2 arguments"));
+    }
+    assert(n_args >= 2);
+    mp_obj_map_t *o = m_new_obj_var(mp_obj_map_t, mp_obj_t, n_args - 1);
+    o->base.type = &map_type;
+    o->n_iters = n_args - 1;
+    o->fun = args[n_args - 1];
+    for (int i = 0; i < n_args - 1; i++) {
+        o->iters[i] = rt_getiter(args[n_args-i-2]);
+    }
+    return o;
+}
+
+static mp_obj_t map_getiter(mp_obj_t self_in) {
+    return self_in;
+}
+
+static mp_obj_t map_iternext(mp_obj_t self_in) {
+    assert(MP_OBJ_IS_TYPE(self_in, &map_type));
+    mp_obj_map_t *self = self_in;
+    mp_obj_t *nextses = m_new(mp_obj_t, self->n_iters);
+
+    for (int i = 0; i < self->n_iters; i++) {
+        mp_obj_t next = rt_iternext(self->iters[i]);
+        if (next == mp_const_stop_iteration) {
+            m_del(mp_obj_t, nextses, self->n_iters);
+            return mp_const_stop_iteration;
+        }
+        nextses[i] = next;
+    }
+    return rt_call_function_n(self->fun, self->n_iters, nextses);
+}
+
+const mp_obj_type_t map_type = {
+    { &mp_const_type },
+    "map",
+    .make_new = map_make_new,
+    .getiter = map_getiter,
+    .iternext = map_iternext,
+};
diff --git a/py/py.mk b/py/py.mk
index 16e0640195..e51b00f45f 100644
--- a/py/py.mk
+++ b/py/py.mk
@@ -77,12 +77,15 @@ PY_O_BASENAME = \
 	objclosure.o \
 	objcomplex.o \
 	objdict.o \
+	objenumerate.o \
 	objexcept.o \
+	objfilter.o \
 	objfloat.o \
 	objfun.o \
 	objgenerator.o \
 	objint.o \
 	objlist.o \
+	objmap.o \
 	objmodule.o \
 	objnone.o \
 	objrange.o \
diff --git a/py/runtime.c b/py/runtime.c
index 594f79d847..18a3269f49 100644
--- a/py/runtime.c
+++ b/py/runtime.c
@@ -105,11 +105,14 @@ void rt_init(void) {
     mp_map_add_qstr(&map_builtins, MP_QSTR_complex, (mp_obj_t)&complex_type);
 #endif
     mp_map_add_qstr(&map_builtins, MP_QSTR_dict, (mp_obj_t)&dict_type);
+    mp_map_add_qstr(&map_builtins, MP_QSTR_enumerate, (mp_obj_t)&enumerate_type);
+    mp_map_add_qstr(&map_builtins, MP_QSTR_filter, (mp_obj_t)&filter_type);
 #if MICROPY_ENABLE_FLOAT
     mp_map_add_qstr(&map_builtins, MP_QSTR_float, (mp_obj_t)&float_type);
 #endif
     mp_map_add_qstr(&map_builtins, MP_QSTR_int, (mp_obj_t)&int_type);
     mp_map_add_qstr(&map_builtins, MP_QSTR_list, (mp_obj_t)&list_type);
+    mp_map_add_qstr(&map_builtins, MP_QSTR_map, (mp_obj_t)&map_type);
     mp_map_add_qstr(&map_builtins, MP_QSTR_set, (mp_obj_t)&set_type);
     mp_map_add_qstr(&map_builtins, MP_QSTR_tuple, (mp_obj_t)&tuple_type);
     mp_map_add_qstr(&map_builtins, MP_QSTR_type, (mp_obj_t)&mp_const_type);