py: split runtime into map, obj, builtin.

1 files changed, 459 insertions, 0 deletions

diff --git a/py/obj.c b/py/obj.c
new file mode 100644
index 0000000000..d678f41146
--- /dev/null
+++ b/py/obj.c
@@ -0,0 +1,459 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <assert.h>
+
+#include "nlr.h"
+#include "misc.h"
+#include "mpyconfig.h"
+#include "runtime.h"
+
+#include "map.h"
+#include "obj.h"
+#include "objprivate.h"
+
+py_obj_t py_obj_new_int(machine_int_t value) {
+    return TO_SMALL_INT(value);
+}
+
+py_obj_t py_obj_new_const(const char *id) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_CONST;
+    o->id = id;
+    return (py_obj_t)o;
+}
+
+py_obj_t py_obj_new_str(qstr qstr) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_STR;
+    o->u_str = qstr;
+    return (py_obj_t)o;
+}
+
+#if MICROPY_ENABLE_FLOAT
+py_obj_t py_obj_new_float(py_float_t val) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_FLOAT;
+    o->u_float = val;
+    return (py_obj_t)o;
+}
+
+py_obj_t py_obj_new_complex(py_float_t real, py_float_t imag) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_COMPLEX;
+    o->u_complex.real = real;
+    o->u_complex.imag = imag;
+    return (py_obj_t)o;
+}
+#endif
+
+py_obj_t py_obj_new_exception_0(qstr id) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_EXCEPTION_0;
+    o->u_exc0.id = id;
+    return (py_obj_t)o;
+}
+
+py_obj_t py_obj_new_exception_2(qstr id, const char *fmt, const char *s1, const char *s2) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_EXCEPTION_N;
+    o->u_exc_n.id = id;
+    o->u_exc_n.n_args = 3;
+    o->u_exc_n.args = m_new(const void*, 3);
+    o->u_exc_n.args[0] = fmt;
+    o->u_exc_n.args[1] = s1;
+    o->u_exc_n.args[2] = s2;
+    return (py_obj_t)o;
+}
+
+// range is a class and instances are immutable sequence objects
+py_obj_t py_obj_new_range(int start, int stop, int step) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_RANGE;
+    o->u_range.start = start;
+    o->u_range.stop = stop;
+    o->u_range.step = step;
+    return o;
+}
+
+py_obj_t py_obj_new_range_iterator(int cur, int stop, int step) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_RANGE_IT;
+    o->u_range_it.cur = cur;
+    o->u_range_it.stop = stop;
+    o->u_range_it.step = step;
+    return o;
+}
+
+py_obj_t py_obj_new_tuple_iterator(py_obj_base_t *tuple, int cur) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_TUPLE_IT;
+    o->u_tuple_list_it.obj = tuple;
+    o->u_tuple_list_it.cur = cur;
+    return o;
+}
+
+py_obj_t py_obj_new_list_iterator(py_obj_base_t *list, int cur) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_LIST_IT;
+    o->u_tuple_list_it.obj = list;
+    o->u_tuple_list_it.cur = cur;
+    return o;
+}
+
+py_obj_t py_obj_new_user(const py_user_info_t *info, machine_uint_t data1, machine_uint_t data2) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_USER;
+    // TODO should probably parse the info to turn strings to qstr's, and wrap functions in O_FUN_N objects
+    // that'll take up some memory.  maybe we can lazily do the O_FUN_N: leave it a ptr to a C function, and
+    // only when the method is looked-up do we change that to the O_FUN_N object.
+    o->u_user.info = info;
+    o->u_user.data1 = data1;
+    o->u_user.data2 = data2;
+    return o;
+}
+
+const char *py_obj_get_type_str(py_obj_t o_in) {
+    if (IS_SMALL_INT(o_in)) {
+        return "int";
+    } else {
+        py_obj_base_t *o = o_in;
+        switch (o->kind) {
+            case O_CONST:
+                if (o == py_const_none) {
+                    return "NoneType";
+                } else {
+                    return "bool";
+                }
+            case O_STR:
+                return "str";
+#if MICROPY_ENABLE_FLOAT
+            case O_FLOAT:
+                return "float";
+#endif
+            case O_FUN_0:
+            case O_FUN_1:
+            case O_FUN_2:
+            case O_FUN_N:
+            case O_FUN_VAR:
+            case O_FUN_BC:
+                return "function";
+            case O_GEN_INSTANCE:
+                return "generator";
+            case O_TUPLE:
+                return "tuple";
+            case O_LIST:
+                return "list";
+            case O_TUPLE_IT:
+                return "tuple_iterator";
+            case O_LIST_IT:
+                return "list_iterator";
+            case O_SET:
+                return "set";
+            case O_MAP:
+                return "dict";
+            case O_OBJ:
+            {
+                py_map_elem_t *qn = py_qstr_map_lookup(o->u_obj.class->u_class.locals, qstr_from_str_static("__qualname__"), false);
+                assert(qn != NULL);
+                assert(IS_O(qn->value, O_STR));
+                return qstr_str(((py_obj_base_t*)qn->value)->u_str);
+            }
+            case O_USER:
+                return o->u_user.info->type_name;
+            default:
+                assert(0);
+                return "UnknownType";
+        }
+    }
+}
+
+void printf_wrapper(void *env, const char *fmt, ...) {
+    va_list args;
+    va_start(args, fmt);
+    vprintf(fmt, args);
+    va_end(args);
+}
+
+void py_obj_print_helper(void (*print)(void *env, const char *fmt, ...), void *env, py_obj_t o_in) {
+    if (IS_SMALL_INT(o_in)) {
+        print(env, "%d", (int)FROM_SMALL_INT(o_in));
+    } else {
+        py_obj_base_t *o = o_in;
+        switch (o->kind) {
+            case O_CONST:
+                print(env, "%s", o->id);
+                break;
+            case O_STR:
+                // TODO need to escape chars etc
+                print(env, "'%s'", qstr_str(o->u_str));
+                break;
+#if MICROPY_ENABLE_FLOAT
+            case O_FLOAT:
+                print(env, "%.8g", o->u_float);
+                break;
+            case O_COMPLEX:
+                if (o->u_complex.real == 0) {
+                    print(env, "%.8gj", o->u_complex.imag);
+                } else {
+                    print(env, "(%.8g+%.8gj)", o->u_complex.real, o->u_complex.imag);
+                }
+                break;
+#endif
+            case O_EXCEPTION_0:
+                print(env, "%s", qstr_str(o->u_exc0.id));
+                break;
+            case O_EXCEPTION_N:
+                print(env, "%s: ", qstr_str(o->u_exc_n.id));
+                print(env, o->u_exc_n.args[0], o->u_exc_n.args[1], o->u_exc_n.args[2]);
+                break;
+            case O_GEN_INSTANCE:
+                print(env, "<generator object 'fun-name' at %p>", o);
+                break;
+            case O_TUPLE:
+                print(env, "(");
+                for (int i = 0; i < o->u_tuple_list.len; i++) {
+                    if (i > 0) {
+                        print(env, ", ");
+                    }
+                    py_obj_print_helper(print, env, o->u_tuple_list.items[i]);
+                }
+                if (o->u_tuple_list.len == 1) {
+                    print(env, ",");
+                }
+                print(env, ")");
+                break;
+            case O_LIST:
+                print(env, "[");
+                for (int i = 0; i < o->u_tuple_list.len; i++) {
+                    if (i > 0) {
+                        print(env, ", ");
+                    }
+                    py_obj_print_helper(print, env, o->u_tuple_list.items[i]);
+                }
+                print(env, "]");
+                break;
+            case O_SET:
+            {
+                bool first = true;
+                print(env, "{");
+                for (int i = 0; i < o->u_set.alloc; i++) {
+                    if (o->u_set.table[i] != NULL) {
+                        if (!first) {
+                            print(env, ", ");
+                        }
+                        first = false;
+                        py_obj_print_helper(print, env, o->u_set.table[i]);
+                    }
+                }
+                print(env, "}");
+                break;
+            }
+            case O_MAP:
+            {
+                bool first = true;
+                print(env, "{");
+                for (int i = 0; i < o->u_map.alloc; i++) {
+                    if (o->u_map.table[i].key != NULL) {
+                        if (!first) {
+                            print(env, ", ");
+                        }
+                        first = false;
+                        py_obj_print_helper(print, env, o->u_map.table[i].key);
+                        print(env, ": ");
+                        py_obj_print_helper(print, env, o->u_map.table[i].value);
+                    }
+                }
+                print(env, "}");
+                break;
+            }
+            case O_USER:
+                if (o->u_user.info->print == NULL) {
+                    print(env, "<unknown user object>");
+                } else {
+                    o->u_user.info->print(o_in);
+                }
+                break;
+            default:
+                print(env, "<? %d>", o->kind);
+                assert(0);
+        }
+    }
+}
+
+void py_obj_print(py_obj_t o_in) {
+    py_obj_print_helper(printf_wrapper, NULL, o_in);
+}
+
+bool py_obj_is_callable(py_obj_t o_in) {
+    if (IS_SMALL_INT(o_in)) {
+        return false;
+    } else {
+        py_obj_base_t *o = o_in;
+        switch (o->kind) {
+            case O_FUN_0:
+            case O_FUN_1:
+            case O_FUN_2:
+            case O_FUN_VAR:
+            case O_FUN_N:
+            case O_FUN_BC:
+            case O_FUN_ASM:
+            // what about O_CLASS, and an O_OBJ that has a __call__ method?
+                return true;
+            default:
+                return false;
+        }
+    }
+}
+
+machine_int_t py_obj_hash(py_obj_t o_in) {
+    if (o_in == py_const_false) {
+        return 0; // needs to hash to same as the integer 0, since False==0
+    } else if (o_in == py_const_true) {
+        return 1; // needs to hash to same as the integer 1, since True==1
+    } else if (IS_SMALL_INT(o_in)) {
+        return FROM_SMALL_INT(o_in);
+    } else if (IS_O(o_in, O_CONST)) {
+        return (machine_int_t)o_in;
+    } else if (IS_O(o_in, O_STR)) {
+        return ((py_obj_base_t*)o_in)->u_str;
+    } else {
+        assert(0);
+        return 0;
+    }
+}
+
+// this function implements the '==' operator (and so the inverse of '!=')
+// from the python language reference:
+// "The objects need not have the same type. If both are numbers, they are converted
+// to a common type. Otherwise, the == and != operators always consider objects of
+// different types to be unequal."
+// note also that False==0 and True==1 are true expressions
+bool py_obj_equal(py_obj_t o1, py_obj_t o2) {
+    if (o1 == o2) {
+        return true;
+    } else if (IS_SMALL_INT(o1) || IS_SMALL_INT(o2)) {
+        if (IS_SMALL_INT(o1) && IS_SMALL_INT(o2)) {
+            return false;
+        } else {
+            if (IS_SMALL_INT(o2)) {
+                py_obj_t temp = o1; o1 = o2; o2 = temp;
+            }
+            // o1 is the SMALL_INT, o2 is not
+            py_small_int_t val = FROM_SMALL_INT(o1);
+            if (o2 == py_const_false) {
+                return val == 0;
+            } else if (o2 == py_const_true) {
+                return val == 1;
+            } else {
+                return false;
+            }
+        }
+    } else if (IS_O(o1, O_STR) && IS_O(o2, O_STR)) {
+        return ((py_obj_base_t*)o1)->u_str == ((py_obj_base_t*)o2)->u_str;
+    } else {
+        assert(0);
+        return false;
+    }
+}
+
+machine_int_t py_obj_get_int(py_obj_t arg) {
+    if (arg == py_const_false) {
+        return 0;
+    } else if (arg == py_const_true) {
+        return 1;
+    } else if (IS_SMALL_INT(arg)) {
+        return FROM_SMALL_INT(arg);
+    } else {
+        assert(0);
+        return 0;
+    }
+}
+
+#if MICROPY_ENABLE_FLOAT
+machine_float_t py_obj_get_float(py_obj_t arg) {
+    if (arg == py_const_false) {
+        return 0;
+    } else if (arg == py_const_true) {
+        return 1;
+    } else if (IS_SMALL_INT(arg)) {
+        return FROM_SMALL_INT(arg);
+    } else if (IS_O(arg, O_FLOAT)) {
+        return ((py_obj_base_t*)arg)->u_float;
+    } else {
+        assert(0);
+        return 0;
+    }
+}
+
+void py_obj_get_complex(py_obj_t arg, py_float_t *real, py_float_t *imag) {
+    if (arg == py_const_false) {
+        *real = 0;
+        *imag = 0;
+    } else if (arg == py_const_true) {
+        *real = 1;
+        *imag = 0;
+    } else if (IS_SMALL_INT(arg)) {
+        *real = FROM_SMALL_INT(arg);
+        *imag = 0;
+    } else if (IS_O(arg, O_FLOAT)) {
+        *real = ((py_obj_base_t*)arg)->u_float;
+        *imag = 0;
+    } else if (IS_O(arg, O_COMPLEX)) {
+        *real = ((py_obj_base_t*)arg)->u_complex.real;
+        *imag = ((py_obj_base_t*)arg)->u_complex.imag;
+    } else {
+        assert(0);
+        *real = 0;
+        *imag = 0;
+    }
+}
+#endif
+
+qstr py_obj_get_qstr(py_obj_t arg) {
+    if (IS_O(arg, O_STR)) {
+        return ((py_obj_base_t*)arg)->u_str;
+    } else {
+        assert(0);
+        return 0;
+    }
+}
+
+py_obj_t *py_obj_get_array_fixed_n(py_obj_t o_in, machine_int_t n) {
+    if (IS_O(o_in, O_TUPLE) || IS_O(o_in, O_LIST)) {
+        py_obj_base_t *o = o_in;
+        if (o->u_tuple_list.len != n) {
+            nlr_jump(py_obj_new_exception_2(rt_q_IndexError, "requested length %d but object has length %d", (void*)n, (void*)o->u_tuple_list.len));
+        }
+        return o->u_tuple_list.items;
+    } else {
+        nlr_jump(py_obj_new_exception_2(rt_q_TypeError, "object '%s' is not a tuple or list", py_obj_get_type_str(o_in), NULL));
+    }
+}
+
+void py_user_get_data(py_obj_t o, machine_uint_t *data1, machine_uint_t *data2) {
+    assert(IS_O(o, O_USER));
+    if (data1 != NULL) {
+        *data1 = ((py_obj_base_t*)o)->u_user.data1;
+    }
+    if (data2 != NULL) {
+        *data2 = ((py_obj_base_t*)o)->u_user.data2;
+    }
+}
+
+void py_user_set_data(py_obj_t o, machine_uint_t data1, machine_uint_t data2) {
+    assert(IS_O(o, O_USER));
+    ((py_obj_base_t*)o)->u_user.data1 = data1;
+    ((py_obj_base_t*)o)->u_user.data2 = data2;
+}
+
+// temporary way of making C modules
+// hack: use class to mimic a module
+
+py_obj_t py_module_new(void) {
+    py_obj_base_t *o = m_new(py_obj_base_t, 1);
+    o->kind = O_CLASS;
+    o->u_class.locals = py_map_new(MAP_QSTR, 0);
+    return o;
+}