Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 1 | #include <stdbool.h> |
| 2 | #include "Python.h" |
| 3 | #include "Python-ast.h" |
| 4 | |
| 5 | static PyObject *_str_open_br; |
| 6 | static PyObject *_str_dbl_open_br; |
| 7 | static PyObject *_str_close_br; |
| 8 | static PyObject *_str_dbl_close_br; |
| 9 | |
| 10 | /* Forward declarations for recursion via helper functions. */ |
| 11 | static PyObject * |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 12 | expr_as_unicode(expr_ty e, int level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 13 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 14 | append_ast_expr(_PyUnicodeWriter *writer, expr_ty e, int level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 15 | static int |
| 16 | append_joinedstr(_PyUnicodeWriter *writer, expr_ty e, bool is_format_spec); |
| 17 | static int |
| 18 | append_formattedvalue(_PyUnicodeWriter *writer, expr_ty e, bool is_format_spec); |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 19 | static int |
| 20 | append_ast_slice(_PyUnicodeWriter *writer, slice_ty slice); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 21 | |
| 22 | static int |
| 23 | append_charp(_PyUnicodeWriter *writer, const char *charp) |
| 24 | { |
Stéphane Wirtel | 83ab995 | 2018-02-01 17:59:27 +0100 | [diff] [blame] | 25 | return _PyUnicodeWriter_WriteASCIIString(writer, charp, -1); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 26 | } |
| 27 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 28 | #define APPEND_STR_FINISH(str) do { \ |
| 29 | return append_charp(writer, (str)); \ |
| 30 | } while (0) |
| 31 | |
| 32 | #define APPEND_STR(str) do { \ |
| 33 | if (-1 == append_charp(writer, (str))) { \ |
| 34 | return -1; \ |
| 35 | } \ |
| 36 | } while (0) |
| 37 | |
| 38 | #define APPEND_STR_IF(cond, str) do { \ |
| 39 | if ((cond) && -1 == append_charp(writer, (str))) { \ |
| 40 | return -1; \ |
| 41 | } \ |
| 42 | } while (0) |
| 43 | |
| 44 | #define APPEND_STR_IF_NOT_FIRST(str) do { \ |
| 45 | APPEND_STR_IF(!first, (str)); \ |
| 46 | first = false; \ |
| 47 | } while (0) |
| 48 | |
| 49 | #define APPEND_EXPR(expr, pr) do { \ |
| 50 | if (-1 == append_ast_expr(writer, (expr), (pr))) { \ |
| 51 | return -1; \ |
| 52 | } \ |
| 53 | } while (0) |
| 54 | |
| 55 | #define APPEND(type, value) do { \ |
| 56 | if (-1 == append_ast_ ## type(writer, (value))) { \ |
| 57 | return -1; \ |
| 58 | } \ |
| 59 | } while (0) |
| 60 | |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 61 | static int |
| 62 | append_repr(_PyUnicodeWriter *writer, PyObject *obj) |
| 63 | { |
| 64 | int ret; |
| 65 | PyObject *repr; |
| 66 | repr = PyObject_Repr(obj); |
| 67 | if (!repr) { |
| 68 | return -1; |
| 69 | } |
| 70 | ret = _PyUnicodeWriter_WriteStr(writer, repr); |
| 71 | Py_DECREF(repr); |
| 72 | return ret; |
| 73 | } |
| 74 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 75 | /* Priority levels */ |
| 76 | |
| 77 | enum { |
| 78 | PR_TUPLE, |
| 79 | PR_TEST, /* 'if'-'else', 'lambda' */ |
| 80 | PR_OR, /* 'or' */ |
| 81 | PR_AND, /* 'and' */ |
| 82 | PR_NOT, /* 'not' */ |
| 83 | PR_CMP, /* '<', '>', '==', '>=', '<=', '!=', |
| 84 | 'in', 'not in', 'is', 'is not' */ |
| 85 | PR_EXPR, |
| 86 | PR_BOR = PR_EXPR, /* '|' */ |
| 87 | PR_BXOR, /* '^' */ |
| 88 | PR_BAND, /* '&' */ |
| 89 | PR_SHIFT, /* '<<', '>>' */ |
| 90 | PR_ARITH, /* '+', '-' */ |
| 91 | PR_TERM, /* '*', '@', '/', '%', '//' */ |
| 92 | PR_FACTOR, /* unary '+', '-', '~' */ |
| 93 | PR_POWER, /* '**' */ |
| 94 | PR_AWAIT, /* 'await' */ |
| 95 | PR_ATOM, |
| 96 | }; |
| 97 | |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 98 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 99 | append_ast_boolop(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 100 | { |
| 101 | Py_ssize_t i, value_count; |
| 102 | asdl_seq *values; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 103 | const char *op = (e->v.BoolOp.op == And) ? " and " : " or "; |
| 104 | int pr = (e->v.BoolOp.op == And) ? PR_AND : PR_OR; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 105 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 106 | APPEND_STR_IF(level > pr, "("); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 107 | |
| 108 | values = e->v.BoolOp.values; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 109 | value_count = asdl_seq_LEN(values); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 110 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 111 | for (i = 0; i < value_count; ++i) { |
| 112 | APPEND_STR_IF(i > 0, op); |
| 113 | APPEND_EXPR((expr_ty)asdl_seq_GET(values, i), pr + 1); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 114 | } |
| 115 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 116 | APPEND_STR_IF(level > pr, ")"); |
| 117 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 118 | } |
| 119 | |
| 120 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 121 | append_ast_binop(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 122 | { |
| 123 | const char *op; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 124 | int pr; |
| 125 | bool rassoc = false; /* is right-associative? */ |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 126 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 127 | switch (e->v.BinOp.op) { |
| 128 | case Add: op = " + "; pr = PR_ARITH; break; |
| 129 | case Sub: op = " - "; pr = PR_ARITH; break; |
| 130 | case Mult: op = " * "; pr = PR_TERM; break; |
| 131 | case MatMult: op = " @ "; pr = PR_TERM; break; |
| 132 | case Div: op = " / "; pr = PR_TERM; break; |
| 133 | case Mod: op = " % "; pr = PR_TERM; break; |
| 134 | case LShift: op = " << "; pr = PR_SHIFT; break; |
| 135 | case RShift: op = " >> "; pr = PR_SHIFT; break; |
| 136 | case BitOr: op = " | "; pr = PR_BOR; break; |
| 137 | case BitXor: op = " ^ "; pr = PR_BXOR; break; |
| 138 | case BitAnd: op = " & "; pr = PR_BAND; break; |
| 139 | case FloorDiv: op = " // "; pr = PR_TERM; break; |
| 140 | case Pow: op = " ** "; pr = PR_POWER; rassoc = true; break; |
Stéphane Wirtel | 83ab995 | 2018-02-01 17:59:27 +0100 | [diff] [blame] | 141 | default: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 142 | PyErr_SetString(PyExc_SystemError, |
| 143 | "unknown binary operator"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 144 | return -1; |
| 145 | } |
| 146 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 147 | APPEND_STR_IF(level > pr, "("); |
| 148 | APPEND_EXPR(e->v.BinOp.left, pr + rassoc); |
| 149 | APPEND_STR(op); |
| 150 | APPEND_EXPR(e->v.BinOp.right, pr + !rassoc); |
| 151 | APPEND_STR_IF(level > pr, ")"); |
| 152 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 156 | append_ast_unaryop(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 157 | { |
| 158 | const char *op; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 159 | int pr; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 160 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 161 | switch (e->v.UnaryOp.op) { |
| 162 | case Invert: op = "~"; pr = PR_FACTOR; break; |
| 163 | case Not: op = "not "; pr = PR_NOT; break; |
| 164 | case UAdd: op = "+"; pr = PR_FACTOR; break; |
| 165 | case USub: op = "-"; pr = PR_FACTOR; break; |
Stéphane Wirtel | 83ab995 | 2018-02-01 17:59:27 +0100 | [diff] [blame] | 166 | default: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 167 | PyErr_SetString(PyExc_SystemError, |
| 168 | "unknown unary operator"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 169 | return -1; |
| 170 | } |
| 171 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 172 | APPEND_STR_IF(level > pr, "("); |
| 173 | APPEND_STR(op); |
| 174 | APPEND_EXPR(e->v.UnaryOp.operand, pr); |
| 175 | APPEND_STR_IF(level > pr, ")"); |
| 176 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | static int |
| 180 | append_ast_arg(_PyUnicodeWriter *writer, arg_ty arg) |
| 181 | { |
| 182 | if (-1 == _PyUnicodeWriter_WriteStr(writer, arg->arg)) { |
| 183 | return -1; |
| 184 | } |
| 185 | if (arg->annotation) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 186 | APPEND_STR(": "); |
| 187 | APPEND_EXPR(arg->annotation, PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 188 | } |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static int |
| 193 | append_ast_args(_PyUnicodeWriter *writer, arguments_ty args) |
| 194 | { |
| 195 | bool first; |
| 196 | Py_ssize_t i, di, arg_count, default_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 197 | |
| 198 | first = true; |
| 199 | |
| 200 | /* positional arguments with defaults */ |
| 201 | arg_count = asdl_seq_LEN(args->args); |
| 202 | default_count = asdl_seq_LEN(args->defaults); |
| 203 | for (i = 0; i < arg_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 204 | APPEND_STR_IF_NOT_FIRST(", "); |
| 205 | APPEND(arg, (arg_ty)asdl_seq_GET(args->args, i)); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 206 | |
| 207 | di = i - arg_count + default_count; |
| 208 | if (di >= 0) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 209 | APPEND_STR("="); |
| 210 | APPEND_EXPR((expr_ty)asdl_seq_GET(args->defaults, di), PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 211 | } |
| 212 | } |
| 213 | |
| 214 | /* vararg, or bare '*' if no varargs but keyword-only arguments present */ |
| 215 | if (args->vararg || args->kwonlyargs) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 216 | APPEND_STR_IF_NOT_FIRST(", "); |
| 217 | APPEND_STR("*"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 218 | if (args->vararg) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 219 | APPEND(arg, args->vararg); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 220 | } |
| 221 | } |
| 222 | |
| 223 | /* keyword-only arguments */ |
| 224 | arg_count = asdl_seq_LEN(args->kwonlyargs); |
| 225 | default_count = asdl_seq_LEN(args->kw_defaults); |
| 226 | for (i = 0; i < arg_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 227 | APPEND_STR_IF_NOT_FIRST(", "); |
| 228 | APPEND(arg, (arg_ty)asdl_seq_GET(args->kwonlyargs, i)); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 229 | |
| 230 | di = i - arg_count + default_count; |
| 231 | if (di >= 0) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 232 | APPEND_STR("="); |
| 233 | APPEND_EXPR((expr_ty)asdl_seq_GET(args->kw_defaults, di), PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 234 | } |
| 235 | } |
| 236 | |
| 237 | /* **kwargs */ |
| 238 | if (args->kwarg) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 239 | APPEND_STR_IF_NOT_FIRST(", "); |
| 240 | APPEND_STR("**"); |
| 241 | APPEND(arg, args->kwarg); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | return 0; |
| 245 | } |
| 246 | |
| 247 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 248 | append_ast_lambda(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 249 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 250 | APPEND_STR_IF(level > PR_TEST, "("); |
| 251 | APPEND_STR("lambda "); |
| 252 | APPEND(args, e->v.Lambda.args); |
| 253 | APPEND_STR(": "); |
| 254 | APPEND_EXPR(e->v.Lambda.body, PR_TEST); |
| 255 | APPEND_STR_IF(level > PR_TEST, ")"); |
| 256 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 260 | append_ast_ifexp(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 261 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 262 | APPEND_STR_IF(level > PR_TEST, "("); |
| 263 | APPEND_EXPR(e->v.IfExp.body, PR_TEST + 1); |
| 264 | APPEND_STR(" if "); |
| 265 | APPEND_EXPR(e->v.IfExp.test, PR_TEST + 1); |
| 266 | APPEND_STR(" else "); |
| 267 | APPEND_EXPR(e->v.IfExp.orelse, PR_TEST); |
| 268 | APPEND_STR_IF(level > PR_TEST, ")"); |
| 269 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 270 | } |
| 271 | |
| 272 | static int |
| 273 | append_ast_dict(_PyUnicodeWriter *writer, expr_ty e) |
| 274 | { |
| 275 | Py_ssize_t i, value_count; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 276 | expr_ty key_node; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 277 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 278 | APPEND_STR("{"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 279 | value_count = asdl_seq_LEN(e->v.Dict.values); |
| 280 | |
| 281 | for (i = 0; i < value_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 282 | APPEND_STR_IF(i > 0, ", "); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 283 | key_node = (expr_ty)asdl_seq_GET(e->v.Dict.keys, i); |
| 284 | if (key_node != NULL) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 285 | APPEND_EXPR(key_node, PR_TEST); |
| 286 | APPEND_STR(": "); |
| 287 | APPEND_EXPR((expr_ty)asdl_seq_GET(e->v.Dict.values, i), PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 288 | } |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 289 | else { |
| 290 | APPEND_STR("**"); |
| 291 | APPEND_EXPR((expr_ty)asdl_seq_GET(e->v.Dict.values, i), PR_EXPR); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 292 | } |
| 293 | } |
| 294 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 295 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | static int |
| 299 | append_ast_set(_PyUnicodeWriter *writer, expr_ty e) |
| 300 | { |
| 301 | Py_ssize_t i, elem_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 302 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 303 | APPEND_STR("{"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 304 | elem_count = asdl_seq_LEN(e->v.Set.elts); |
| 305 | for (i = 0; i < elem_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 306 | APPEND_STR_IF(i > 0, ", "); |
| 307 | APPEND_EXPR((expr_ty)asdl_seq_GET(e->v.Set.elts, i), PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 308 | } |
| 309 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 310 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | static int |
| 314 | append_ast_list(_PyUnicodeWriter *writer, expr_ty e) |
| 315 | { |
| 316 | Py_ssize_t i, elem_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 317 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 318 | APPEND_STR("["); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 319 | elem_count = asdl_seq_LEN(e->v.List.elts); |
| 320 | for (i = 0; i < elem_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 321 | APPEND_STR_IF(i > 0, ", "); |
| 322 | APPEND_EXPR((expr_ty)asdl_seq_GET(e->v.List.elts, i), PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 323 | } |
| 324 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 325 | APPEND_STR_FINISH("]"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 329 | append_ast_tuple(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 330 | { |
| 331 | Py_ssize_t i, elem_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 332 | |
| 333 | elem_count = asdl_seq_LEN(e->v.Tuple.elts); |
| 334 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 335 | if (elem_count == 0) { |
| 336 | APPEND_STR_FINISH("()"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 337 | } |
| 338 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 339 | APPEND_STR_IF(level > PR_TUPLE, "("); |
| 340 | |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 341 | for (i = 0; i < elem_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 342 | APPEND_STR_IF(i > 0, ", "); |
| 343 | APPEND_EXPR((expr_ty)asdl_seq_GET(e->v.Tuple.elts, i), PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 344 | } |
| 345 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 346 | APPEND_STR_IF(elem_count == 1, ","); |
| 347 | APPEND_STR_IF(level > PR_TUPLE, ")"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 348 | return 0; |
| 349 | } |
| 350 | |
| 351 | static int |
| 352 | append_ast_comprehension(_PyUnicodeWriter *writer, comprehension_ty gen) |
| 353 | { |
| 354 | Py_ssize_t i, if_count; |
| 355 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 356 | APPEND_STR(gen->is_async ? " async for " : " for "); |
| 357 | APPEND_EXPR(gen->target, PR_TUPLE); |
| 358 | APPEND_STR(" in "); |
| 359 | APPEND_EXPR(gen->iter, PR_TEST + 1); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 360 | |
| 361 | if_count = asdl_seq_LEN(gen->ifs); |
| 362 | for (i = 0; i < if_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 363 | APPEND_STR(" if "); |
| 364 | APPEND_EXPR((expr_ty)asdl_seq_GET(gen->ifs, i), PR_TEST + 1); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 365 | } |
| 366 | return 0; |
| 367 | } |
| 368 | |
| 369 | static int |
| 370 | append_ast_comprehensions(_PyUnicodeWriter *writer, asdl_seq *comprehensions) |
| 371 | { |
| 372 | Py_ssize_t i, gen_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 373 | gen_count = asdl_seq_LEN(comprehensions); |
| 374 | |
| 375 | for (i = 0; i < gen_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 376 | APPEND(comprehension, (comprehension_ty)asdl_seq_GET(comprehensions, i)); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 377 | } |
| 378 | |
| 379 | return 0; |
| 380 | } |
| 381 | |
| 382 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 383 | append_ast_genexp(_PyUnicodeWriter *writer, expr_ty e) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 384 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 385 | APPEND_STR("("); |
| 386 | APPEND_EXPR(e->v.GeneratorExp.elt, PR_TEST); |
| 387 | APPEND(comprehensions, e->v.GeneratorExp.generators); |
| 388 | APPEND_STR_FINISH(")"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 389 | } |
| 390 | |
| 391 | static int |
| 392 | append_ast_listcomp(_PyUnicodeWriter *writer, expr_ty e) |
| 393 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 394 | APPEND_STR("["); |
| 395 | APPEND_EXPR(e->v.ListComp.elt, PR_TEST); |
| 396 | APPEND(comprehensions, e->v.ListComp.generators); |
| 397 | APPEND_STR_FINISH("]"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 398 | } |
| 399 | |
| 400 | static int |
| 401 | append_ast_setcomp(_PyUnicodeWriter *writer, expr_ty e) |
| 402 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 403 | APPEND_STR("{"); |
| 404 | APPEND_EXPR(e->v.SetComp.elt, PR_TEST); |
| 405 | APPEND(comprehensions, e->v.SetComp.generators); |
| 406 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 407 | } |
| 408 | |
| 409 | static int |
| 410 | append_ast_dictcomp(_PyUnicodeWriter *writer, expr_ty e) |
| 411 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 412 | APPEND_STR("{"); |
| 413 | APPEND_EXPR(e->v.DictComp.key, PR_TEST); |
| 414 | APPEND_STR(": "); |
| 415 | APPEND_EXPR(e->v.DictComp.value, PR_TEST); |
| 416 | APPEND(comprehensions, e->v.DictComp.generators); |
| 417 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 418 | } |
| 419 | |
| 420 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 421 | append_ast_compare(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 422 | { |
| 423 | const char *op; |
| 424 | Py_ssize_t i, comparator_count; |
| 425 | asdl_seq *comparators; |
| 426 | asdl_int_seq *ops; |
| 427 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 428 | APPEND_STR_IF(level > PR_CMP, "("); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 429 | |
| 430 | comparators = e->v.Compare.comparators; |
| 431 | ops = e->v.Compare.ops; |
| 432 | comparator_count = asdl_seq_LEN(comparators); |
| 433 | assert(comparator_count > 0); |
| 434 | assert(comparator_count == asdl_seq_LEN(ops)); |
| 435 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 436 | APPEND_EXPR(e->v.Compare.left, PR_CMP + 1); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 437 | |
| 438 | for (i = 0; i < comparator_count; i++) { |
| 439 | switch ((cmpop_ty)asdl_seq_GET(ops, i)) { |
| 440 | case Eq: |
| 441 | op = " == "; |
| 442 | break; |
| 443 | case NotEq: |
| 444 | op = " != "; |
| 445 | break; |
| 446 | case Lt: |
| 447 | op = " < "; |
| 448 | break; |
| 449 | case LtE: |
| 450 | op = " <= "; |
| 451 | break; |
| 452 | case Gt: |
| 453 | op = " > "; |
| 454 | break; |
| 455 | case GtE: |
| 456 | op = " >= "; |
| 457 | break; |
| 458 | case Is: |
| 459 | op = " is "; |
| 460 | break; |
| 461 | case IsNot: |
| 462 | op = " is not "; |
| 463 | break; |
| 464 | case In: |
| 465 | op = " in "; |
| 466 | break; |
| 467 | case NotIn: |
| 468 | op = " not in "; |
| 469 | break; |
| 470 | default: |
| 471 | PyErr_SetString(PyExc_SystemError, |
| 472 | "unexpected comparison kind"); |
| 473 | return -1; |
| 474 | } |
| 475 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 476 | APPEND_STR(op); |
| 477 | APPEND_EXPR((expr_ty)asdl_seq_GET(comparators, i), PR_CMP + 1); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 478 | } |
| 479 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 480 | APPEND_STR_IF(level > PR_CMP, ")"); |
| 481 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 482 | } |
| 483 | |
| 484 | static int |
| 485 | append_ast_keyword(_PyUnicodeWriter *writer, keyword_ty kw) |
| 486 | { |
| 487 | if (kw->arg == NULL) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 488 | APPEND_STR("**"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 489 | } |
| 490 | else { |
| 491 | if (-1 == _PyUnicodeWriter_WriteStr(writer, kw->arg)) { |
| 492 | return -1; |
| 493 | } |
| 494 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 495 | APPEND_STR("="); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 496 | } |
| 497 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 498 | APPEND_EXPR(kw->value, PR_TEST); |
| 499 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | static int |
| 503 | append_ast_call(_PyUnicodeWriter *writer, expr_ty e) |
| 504 | { |
| 505 | bool first; |
| 506 | Py_ssize_t i, arg_count, kw_count; |
| 507 | expr_ty expr; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 508 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 509 | APPEND_EXPR(e->v.Call.func, PR_ATOM); |
| 510 | |
| 511 | arg_count = asdl_seq_LEN(e->v.Call.args); |
| 512 | kw_count = asdl_seq_LEN(e->v.Call.keywords); |
| 513 | if (arg_count == 1 && kw_count == 0) { |
| 514 | expr = (expr_ty)asdl_seq_GET(e->v.Call.args, 0); |
| 515 | if (expr->kind == GeneratorExp_kind) { |
| 516 | /* Special case: a single generator expression. */ |
| 517 | return append_ast_genexp(writer, expr); |
| 518 | } |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 519 | } |
| 520 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 521 | APPEND_STR("("); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 522 | |
| 523 | first = true; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 524 | for (i = 0; i < arg_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 525 | APPEND_STR_IF_NOT_FIRST(", "); |
| 526 | APPEND_EXPR((expr_ty)asdl_seq_GET(e->v.Call.args, i), PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 527 | } |
| 528 | |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 529 | for (i = 0; i < kw_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 530 | APPEND_STR_IF_NOT_FIRST(", "); |
| 531 | APPEND(keyword, (keyword_ty)asdl_seq_GET(e->v.Call.keywords, i)); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 532 | } |
| 533 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 534 | APPEND_STR_FINISH(")"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 535 | } |
| 536 | |
| 537 | static PyObject * |
| 538 | escape_braces(PyObject *orig) |
| 539 | { |
| 540 | PyObject *temp; |
| 541 | PyObject *result; |
| 542 | temp = PyUnicode_Replace(orig, _str_open_br, _str_dbl_open_br, -1); |
| 543 | if (!temp) { |
| 544 | return NULL; |
| 545 | } |
| 546 | result = PyUnicode_Replace(temp, _str_close_br, _str_dbl_close_br, -1); |
| 547 | Py_DECREF(temp); |
| 548 | return result; |
| 549 | } |
| 550 | |
| 551 | static int |
| 552 | append_fstring_unicode(_PyUnicodeWriter *writer, PyObject *unicode) |
| 553 | { |
| 554 | PyObject *escaped; |
| 555 | int result = -1; |
| 556 | escaped = escape_braces(unicode); |
| 557 | if (escaped) { |
| 558 | result = _PyUnicodeWriter_WriteStr(writer, escaped); |
| 559 | Py_DECREF(escaped); |
| 560 | } |
| 561 | return result; |
| 562 | } |
| 563 | |
| 564 | static int |
| 565 | append_fstring_element(_PyUnicodeWriter *writer, expr_ty e, bool is_format_spec) |
| 566 | { |
| 567 | switch (e->kind) { |
| 568 | case Constant_kind: |
| 569 | return append_fstring_unicode(writer, e->v.Constant.value); |
| 570 | case Str_kind: |
| 571 | return append_fstring_unicode(writer, e->v.Str.s); |
| 572 | case JoinedStr_kind: |
| 573 | return append_joinedstr(writer, e, is_format_spec); |
| 574 | case FormattedValue_kind: |
| 575 | return append_formattedvalue(writer, e, is_format_spec); |
| 576 | default: |
| 577 | PyErr_SetString(PyExc_SystemError, |
| 578 | "unknown expression kind inside f-string"); |
| 579 | return -1; |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | /* Build body separately to enable wrapping the entire stream of Strs, |
| 584 | Constants and FormattedValues in one opening and one closing quote. */ |
| 585 | static PyObject * |
| 586 | build_fstring_body(asdl_seq *values, bool is_format_spec) |
| 587 | { |
| 588 | Py_ssize_t i, value_count; |
| 589 | _PyUnicodeWriter body_writer; |
| 590 | _PyUnicodeWriter_Init(&body_writer); |
| 591 | body_writer.min_length = 256; |
| 592 | body_writer.overallocate = 1; |
| 593 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 594 | value_count = asdl_seq_LEN(values); |
| 595 | for (i = 0; i < value_count; ++i) { |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 596 | if (-1 == append_fstring_element(&body_writer, |
| 597 | (expr_ty)asdl_seq_GET(values, i), |
| 598 | is_format_spec |
| 599 | )) { |
| 600 | _PyUnicodeWriter_Dealloc(&body_writer); |
| 601 | return NULL; |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | return _PyUnicodeWriter_Finish(&body_writer); |
| 606 | } |
| 607 | |
| 608 | static int |
| 609 | append_joinedstr(_PyUnicodeWriter *writer, expr_ty e, bool is_format_spec) |
| 610 | { |
| 611 | int result = -1; |
| 612 | PyObject *body = build_fstring_body(e->v.JoinedStr.values, is_format_spec); |
| 613 | if (!body) { |
| 614 | return -1; |
| 615 | } |
| 616 | |
| 617 | if (!is_format_spec) { |
| 618 | if (-1 != append_charp(writer, "f") && |
| 619 | -1 != append_repr(writer, body)) |
| 620 | { |
| 621 | result = 0; |
| 622 | } |
| 623 | } |
| 624 | else { |
| 625 | result = _PyUnicodeWriter_WriteStr(writer, body); |
| 626 | } |
| 627 | Py_DECREF(body); |
| 628 | return result; |
| 629 | } |
| 630 | |
| 631 | static int |
| 632 | append_formattedvalue(_PyUnicodeWriter *writer, expr_ty e, bool is_format_spec) |
| 633 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 634 | const char *conversion; |
| 635 | const char *outer_brace = "{"; |
| 636 | /* Grammar allows PR_TUPLE, but use >PR_TEST for adding parenthesis |
| 637 | around a lambda with ':' */ |
| 638 | PyObject *temp_fv_str = expr_as_unicode(e->v.FormattedValue.value, PR_TEST + 1); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 639 | if (!temp_fv_str) { |
| 640 | return -1; |
| 641 | } |
| 642 | if (PyUnicode_Find(temp_fv_str, _str_open_br, 0, 1, 1) == 0) { |
| 643 | /* Expression starts with a brace, split it with a space from the outer |
| 644 | one. */ |
| 645 | outer_brace = "{ "; |
| 646 | } |
| 647 | if (-1 == append_charp(writer, outer_brace)) { |
| 648 | Py_DECREF(temp_fv_str); |
| 649 | return -1; |
| 650 | } |
| 651 | if (-1 == _PyUnicodeWriter_WriteStr(writer, temp_fv_str)) { |
| 652 | Py_DECREF(temp_fv_str); |
| 653 | return -1; |
| 654 | } |
| 655 | Py_DECREF(temp_fv_str); |
| 656 | |
| 657 | if (e->v.FormattedValue.conversion > 0) { |
| 658 | switch (e->v.FormattedValue.conversion) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 659 | case 'a': |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 660 | conversion = "!a"; |
| 661 | break; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 662 | case 'r': |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 663 | conversion = "!r"; |
| 664 | break; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 665 | case 's': |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 666 | conversion = "!s"; |
| 667 | break; |
| 668 | default: |
| 669 | PyErr_SetString(PyExc_SystemError, |
| 670 | "unknown f-value conversion kind"); |
| 671 | return -1; |
| 672 | } |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 673 | APPEND_STR(conversion); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 674 | } |
Stéphane Wirtel | 83ab995 | 2018-02-01 17:59:27 +0100 | [diff] [blame] | 675 | if (e->v.FormattedValue.format_spec) { |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 676 | if (-1 == _PyUnicodeWriter_WriteASCIIString(writer, ":", 1) || |
| 677 | -1 == append_fstring_element(writer, |
| 678 | e->v.FormattedValue.format_spec, |
| 679 | true |
| 680 | )) |
| 681 | { |
| 682 | return -1; |
| 683 | } |
| 684 | } |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 685 | |
| 686 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 687 | } |
| 688 | |
| 689 | static int |
| 690 | append_ast_attribute(_PyUnicodeWriter *writer, expr_ty e) |
| 691 | { |
| 692 | const char *period; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 693 | APPEND_EXPR(e->v.Attribute.value, PR_ATOM); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 694 | |
| 695 | /* Special case: integers require a space for attribute access to be |
| 696 | unambiguous. Floats and complex numbers don't but work with it, too. */ |
| 697 | if (e->v.Attribute.value->kind == Num_kind || |
| 698 | e->v.Attribute.value->kind == Constant_kind) |
| 699 | { |
| 700 | period = " ."; |
| 701 | } |
| 702 | else { |
| 703 | period = "."; |
| 704 | } |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 705 | APPEND_STR(period); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 706 | |
| 707 | return _PyUnicodeWriter_WriteStr(writer, e->v.Attribute.attr); |
| 708 | } |
| 709 | |
| 710 | static int |
| 711 | append_ast_simple_slice(_PyUnicodeWriter *writer, slice_ty slice) |
| 712 | { |
| 713 | if (slice->v.Slice.lower) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 714 | APPEND_EXPR(slice->v.Slice.lower, PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 715 | } |
| 716 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 717 | APPEND_STR(":"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 718 | |
| 719 | if (slice->v.Slice.upper) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 720 | APPEND_EXPR(slice->v.Slice.upper, PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 721 | } |
| 722 | |
| 723 | if (slice->v.Slice.step) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 724 | APPEND_STR(":"); |
| 725 | APPEND_EXPR(slice->v.Slice.step, PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 726 | } |
| 727 | return 0; |
| 728 | } |
| 729 | |
| 730 | static int |
| 731 | append_ast_ext_slice(_PyUnicodeWriter *writer, slice_ty slice) |
| 732 | { |
| 733 | Py_ssize_t i, dims_count; |
| 734 | dims_count = asdl_seq_LEN(slice->v.ExtSlice.dims); |
| 735 | for (i = 0; i < dims_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 736 | APPEND_STR_IF(i > 0, ", "); |
| 737 | APPEND(slice, (slice_ty)asdl_seq_GET(slice->v.ExtSlice.dims, i)); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 738 | } |
| 739 | return 0; |
| 740 | } |
| 741 | |
| 742 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 743 | append_ast_slice(_PyUnicodeWriter *writer, slice_ty slice) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 744 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 745 | switch (slice->kind) { |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 746 | case Slice_kind: |
| 747 | return append_ast_simple_slice(writer, slice); |
| 748 | case ExtSlice_kind: |
| 749 | return append_ast_ext_slice(writer, slice); |
| 750 | case Index_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 751 | APPEND_EXPR(slice->v.Index.value, PR_TUPLE); |
| 752 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 753 | default: |
| 754 | PyErr_SetString(PyExc_SystemError, |
| 755 | "unexpected slice kind"); |
| 756 | return -1; |
| 757 | } |
| 758 | } |
| 759 | |
| 760 | static int |
| 761 | append_ast_subscript(_PyUnicodeWriter *writer, expr_ty e) |
| 762 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 763 | APPEND_EXPR(e->v.Subscript.value, PR_ATOM); |
| 764 | APPEND_STR("["); |
| 765 | APPEND(slice, e->v.Subscript.slice); |
| 766 | APPEND_STR_FINISH("]"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 767 | } |
| 768 | |
| 769 | static int |
| 770 | append_ast_starred(_PyUnicodeWriter *writer, expr_ty e) |
| 771 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 772 | APPEND_STR("*"); |
| 773 | APPEND_EXPR(e->v.Starred.value, PR_EXPR); |
| 774 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 775 | } |
| 776 | |
| 777 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 778 | append_ast_yield(_PyUnicodeWriter *writer, expr_ty e) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 779 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 780 | if (!e->v.Yield.value) { |
| 781 | APPEND_STR_FINISH("(yield)"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 782 | } |
| 783 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 784 | APPEND_STR("(yield "); |
| 785 | APPEND_EXPR(e->v.Yield.value, PR_TEST); |
| 786 | APPEND_STR_FINISH(")"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 787 | } |
| 788 | |
| 789 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 790 | append_ast_yield_from(_PyUnicodeWriter *writer, expr_ty e) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 791 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 792 | APPEND_STR("(yield from "); |
| 793 | APPEND_EXPR(e->v.YieldFrom.value, PR_TEST); |
| 794 | APPEND_STR_FINISH(")"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 795 | } |
| 796 | |
| 797 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 798 | append_ast_await(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 799 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 800 | APPEND_STR_IF(level > PR_AWAIT, "("); |
| 801 | APPEND_STR("await "); |
| 802 | APPEND_EXPR(e->v.Await.value, PR_ATOM); |
| 803 | APPEND_STR_IF(level > PR_AWAIT, ")"); |
| 804 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 805 | } |
| 806 | |
| 807 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 808 | append_ast_expr(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 809 | { |
| 810 | switch (e->kind) { |
| 811 | case BoolOp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 812 | return append_ast_boolop(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 813 | case BinOp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 814 | return append_ast_binop(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 815 | case UnaryOp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 816 | return append_ast_unaryop(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 817 | case Lambda_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 818 | return append_ast_lambda(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 819 | case IfExp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 820 | return append_ast_ifexp(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 821 | case Dict_kind: |
| 822 | return append_ast_dict(writer, e); |
| 823 | case Set_kind: |
| 824 | return append_ast_set(writer, e); |
| 825 | case GeneratorExp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 826 | return append_ast_genexp(writer, e); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 827 | case ListComp_kind: |
| 828 | return append_ast_listcomp(writer, e); |
| 829 | case SetComp_kind: |
| 830 | return append_ast_setcomp(writer, e); |
| 831 | case DictComp_kind: |
| 832 | return append_ast_dictcomp(writer, e); |
| 833 | case Yield_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 834 | return append_ast_yield(writer, e); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 835 | case YieldFrom_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 836 | return append_ast_yield_from(writer, e); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 837 | case Await_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 838 | return append_ast_await(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 839 | case Compare_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 840 | return append_ast_compare(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 841 | case Call_kind: |
| 842 | return append_ast_call(writer, e); |
| 843 | case Constant_kind: |
| 844 | return append_repr(writer, e->v.Constant.value); |
| 845 | case Num_kind: |
| 846 | return append_repr(writer, e->v.Num.n); |
| 847 | case Str_kind: |
| 848 | return append_repr(writer, e->v.Str.s); |
| 849 | case JoinedStr_kind: |
| 850 | return append_joinedstr(writer, e, false); |
| 851 | case FormattedValue_kind: |
| 852 | return append_formattedvalue(writer, e, false); |
| 853 | case Bytes_kind: |
| 854 | return append_repr(writer, e->v.Bytes.s); |
| 855 | case Ellipsis_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 856 | APPEND_STR_FINISH("..."); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 857 | case NameConstant_kind: |
| 858 | return append_repr(writer, e->v.NameConstant.value); |
| 859 | /* The following exprs can be assignment targets. */ |
| 860 | case Attribute_kind: |
| 861 | return append_ast_attribute(writer, e); |
| 862 | case Subscript_kind: |
| 863 | return append_ast_subscript(writer, e); |
| 864 | case Starred_kind: |
| 865 | return append_ast_starred(writer, e); |
| 866 | case Name_kind: |
| 867 | return _PyUnicodeWriter_WriteStr(writer, e->v.Name.id); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 868 | case List_kind: |
| 869 | return append_ast_list(writer, e); |
| 870 | case Tuple_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 871 | return append_ast_tuple(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 872 | default: |
| 873 | PyErr_SetString(PyExc_SystemError, |
| 874 | "unknown expression kind"); |
| 875 | return -1; |
| 876 | } |
| 877 | } |
| 878 | |
| 879 | static int |
Stéphane Wirtel | 83ab995 | 2018-02-01 17:59:27 +0100 | [diff] [blame] | 880 | maybe_init_static_strings(void) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 881 | { |
| 882 | if (!_str_open_br && |
| 883 | !(_str_open_br = PyUnicode_InternFromString("{"))) { |
| 884 | return -1; |
| 885 | } |
| 886 | if (!_str_dbl_open_br && |
| 887 | !(_str_dbl_open_br = PyUnicode_InternFromString("{{"))) { |
| 888 | return -1; |
| 889 | } |
| 890 | if (!_str_close_br && |
| 891 | !(_str_close_br = PyUnicode_InternFromString("}"))) { |
| 892 | return -1; |
| 893 | } |
| 894 | if (!_str_dbl_close_br && |
| 895 | !(_str_dbl_close_br = PyUnicode_InternFromString("}}"))) { |
| 896 | return -1; |
| 897 | } |
| 898 | return 0; |
| 899 | } |
| 900 | |
| 901 | static PyObject * |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 902 | expr_as_unicode(expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 903 | { |
| 904 | _PyUnicodeWriter writer; |
| 905 | _PyUnicodeWriter_Init(&writer); |
| 906 | writer.min_length = 256; |
| 907 | writer.overallocate = 1; |
| 908 | if (-1 == maybe_init_static_strings() || |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 909 | -1 == append_ast_expr(&writer, e, level)) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 910 | { |
| 911 | _PyUnicodeWriter_Dealloc(&writer); |
| 912 | return NULL; |
| 913 | } |
| 914 | return _PyUnicodeWriter_Finish(&writer); |
| 915 | } |
| 916 | |
| 917 | PyObject * |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 918 | _PyAST_ExprAsUnicode(expr_ty e) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 919 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame^] | 920 | return expr_as_unicode(e, PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 921 | } |