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; |
Pablo Galindo | da6129e | 2019-05-18 23:40:22 +0100 | [diff] [blame] | 196 | Py_ssize_t i, di, arg_count, posonlyarg_count, default_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 197 | |
| 198 | first = true; |
| 199 | |
Pablo Galindo | da6129e | 2019-05-18 23:40:22 +0100 | [diff] [blame] | 200 | /* positional-only and positional arguments with defaults */ |
| 201 | posonlyarg_count = asdl_seq_LEN(args->posonlyargs); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 202 | arg_count = asdl_seq_LEN(args->args); |
| 203 | default_count = asdl_seq_LEN(args->defaults); |
Pablo Galindo | da6129e | 2019-05-18 23:40:22 +0100 | [diff] [blame] | 204 | for (i = 0; i < posonlyarg_count + arg_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 205 | APPEND_STR_IF_NOT_FIRST(", "); |
Pablo Galindo | da6129e | 2019-05-18 23:40:22 +0100 | [diff] [blame] | 206 | if (i < posonlyarg_count){ |
| 207 | APPEND(arg, (arg_ty)asdl_seq_GET(args->posonlyargs, i)); |
| 208 | } else { |
| 209 | APPEND(arg, (arg_ty)asdl_seq_GET(args->args, i-posonlyarg_count)); |
| 210 | } |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 211 | |
Pablo Galindo | da6129e | 2019-05-18 23:40:22 +0100 | [diff] [blame] | 212 | di = i - posonlyarg_count - arg_count + default_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 213 | if (di >= 0) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 214 | APPEND_STR("="); |
| 215 | 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] | 216 | } |
Pablo Galindo | da6129e | 2019-05-18 23:40:22 +0100 | [diff] [blame] | 217 | if (posonlyarg_count && i + 1 == posonlyarg_count) { |
| 218 | APPEND_STR(", /"); |
| 219 | } |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | /* vararg, or bare '*' if no varargs but keyword-only arguments present */ |
Serhiy Storchaka | 2a2940e | 2018-09-30 21:07:05 +0300 | [diff] [blame] | 223 | if (args->vararg || asdl_seq_LEN(args->kwonlyargs)) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 224 | APPEND_STR_IF_NOT_FIRST(", "); |
| 225 | APPEND_STR("*"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 226 | if (args->vararg) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 227 | APPEND(arg, args->vararg); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 228 | } |
| 229 | } |
| 230 | |
| 231 | /* keyword-only arguments */ |
| 232 | arg_count = asdl_seq_LEN(args->kwonlyargs); |
| 233 | default_count = asdl_seq_LEN(args->kw_defaults); |
| 234 | for (i = 0; i < arg_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 235 | APPEND_STR_IF_NOT_FIRST(", "); |
| 236 | APPEND(arg, (arg_ty)asdl_seq_GET(args->kwonlyargs, i)); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 237 | |
| 238 | di = i - arg_count + default_count; |
| 239 | if (di >= 0) { |
Serhiy Storchaka | 2a2940e | 2018-09-30 21:07:05 +0300 | [diff] [blame] | 240 | expr_ty default_ = (expr_ty)asdl_seq_GET(args->kw_defaults, di); |
| 241 | if (default_) { |
| 242 | APPEND_STR("="); |
| 243 | APPEND_EXPR(default_, PR_TEST); |
| 244 | } |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 245 | } |
| 246 | } |
| 247 | |
| 248 | /* **kwargs */ |
| 249 | if (args->kwarg) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 250 | APPEND_STR_IF_NOT_FIRST(", "); |
| 251 | APPEND_STR("**"); |
| 252 | APPEND(arg, args->kwarg); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 253 | } |
| 254 | |
| 255 | return 0; |
| 256 | } |
| 257 | |
| 258 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 259 | append_ast_lambda(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 260 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 261 | APPEND_STR_IF(level > PR_TEST, "("); |
Pablo Galindo | da6129e | 2019-05-18 23:40:22 +0100 | [diff] [blame] | 262 | Py_ssize_t n_positional = (asdl_seq_LEN(e->v.Lambda.args->args) + |
| 263 | asdl_seq_LEN(e->v.Lambda.args->posonlyargs)); |
| 264 | APPEND_STR(n_positional ? "lambda " : "lambda"); |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 265 | APPEND(args, e->v.Lambda.args); |
| 266 | APPEND_STR(": "); |
| 267 | APPEND_EXPR(e->v.Lambda.body, 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 |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 273 | append_ast_ifexp(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 274 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 275 | APPEND_STR_IF(level > PR_TEST, "("); |
| 276 | APPEND_EXPR(e->v.IfExp.body, PR_TEST + 1); |
| 277 | APPEND_STR(" if "); |
| 278 | APPEND_EXPR(e->v.IfExp.test, PR_TEST + 1); |
| 279 | APPEND_STR(" else "); |
| 280 | APPEND_EXPR(e->v.IfExp.orelse, PR_TEST); |
| 281 | APPEND_STR_IF(level > PR_TEST, ")"); |
| 282 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | static int |
| 286 | append_ast_dict(_PyUnicodeWriter *writer, expr_ty e) |
| 287 | { |
| 288 | Py_ssize_t i, value_count; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 289 | expr_ty key_node; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 290 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 291 | APPEND_STR("{"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 292 | value_count = asdl_seq_LEN(e->v.Dict.values); |
| 293 | |
| 294 | for (i = 0; i < value_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 295 | APPEND_STR_IF(i > 0, ", "); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 296 | key_node = (expr_ty)asdl_seq_GET(e->v.Dict.keys, i); |
| 297 | if (key_node != NULL) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 298 | APPEND_EXPR(key_node, PR_TEST); |
| 299 | APPEND_STR(": "); |
| 300 | 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] | 301 | } |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 302 | else { |
| 303 | APPEND_STR("**"); |
| 304 | 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] | 305 | } |
| 306 | } |
| 307 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 308 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | static int |
| 312 | append_ast_set(_PyUnicodeWriter *writer, expr_ty e) |
| 313 | { |
| 314 | Py_ssize_t i, elem_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 315 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 316 | APPEND_STR("{"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 317 | elem_count = asdl_seq_LEN(e->v.Set.elts); |
| 318 | for (i = 0; i < elem_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 319 | APPEND_STR_IF(i > 0, ", "); |
| 320 | 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] | 321 | } |
| 322 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 323 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 324 | } |
| 325 | |
| 326 | static int |
| 327 | append_ast_list(_PyUnicodeWriter *writer, expr_ty e) |
| 328 | { |
| 329 | Py_ssize_t i, elem_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 330 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 331 | APPEND_STR("["); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 332 | elem_count = asdl_seq_LEN(e->v.List.elts); |
| 333 | for (i = 0; i < elem_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 334 | APPEND_STR_IF(i > 0, ", "); |
| 335 | 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] | 336 | } |
| 337 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 338 | APPEND_STR_FINISH("]"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 342 | append_ast_tuple(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 343 | { |
| 344 | Py_ssize_t i, elem_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 345 | |
| 346 | elem_count = asdl_seq_LEN(e->v.Tuple.elts); |
| 347 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 348 | if (elem_count == 0) { |
| 349 | APPEND_STR_FINISH("()"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 350 | } |
| 351 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 352 | APPEND_STR_IF(level > PR_TUPLE, "("); |
| 353 | |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 354 | for (i = 0; i < elem_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 355 | APPEND_STR_IF(i > 0, ", "); |
| 356 | 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] | 357 | } |
| 358 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 359 | APPEND_STR_IF(elem_count == 1, ","); |
| 360 | APPEND_STR_IF(level > PR_TUPLE, ")"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | static int |
| 365 | append_ast_comprehension(_PyUnicodeWriter *writer, comprehension_ty gen) |
| 366 | { |
| 367 | Py_ssize_t i, if_count; |
| 368 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 369 | APPEND_STR(gen->is_async ? " async for " : " for "); |
| 370 | APPEND_EXPR(gen->target, PR_TUPLE); |
| 371 | APPEND_STR(" in "); |
| 372 | APPEND_EXPR(gen->iter, PR_TEST + 1); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 373 | |
| 374 | if_count = asdl_seq_LEN(gen->ifs); |
| 375 | for (i = 0; i < if_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 376 | APPEND_STR(" if "); |
| 377 | 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] | 378 | } |
| 379 | return 0; |
| 380 | } |
| 381 | |
| 382 | static int |
| 383 | append_ast_comprehensions(_PyUnicodeWriter *writer, asdl_seq *comprehensions) |
| 384 | { |
| 385 | Py_ssize_t i, gen_count; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 386 | gen_count = asdl_seq_LEN(comprehensions); |
| 387 | |
| 388 | for (i = 0; i < gen_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 389 | APPEND(comprehension, (comprehension_ty)asdl_seq_GET(comprehensions, i)); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 390 | } |
| 391 | |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 396 | append_ast_genexp(_PyUnicodeWriter *writer, expr_ty e) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 397 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 398 | APPEND_STR("("); |
| 399 | APPEND_EXPR(e->v.GeneratorExp.elt, PR_TEST); |
| 400 | APPEND(comprehensions, e->v.GeneratorExp.generators); |
| 401 | APPEND_STR_FINISH(")"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 402 | } |
| 403 | |
| 404 | static int |
| 405 | append_ast_listcomp(_PyUnicodeWriter *writer, expr_ty e) |
| 406 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 407 | APPEND_STR("["); |
| 408 | APPEND_EXPR(e->v.ListComp.elt, PR_TEST); |
| 409 | APPEND(comprehensions, e->v.ListComp.generators); |
| 410 | APPEND_STR_FINISH("]"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 411 | } |
| 412 | |
| 413 | static int |
| 414 | append_ast_setcomp(_PyUnicodeWriter *writer, expr_ty e) |
| 415 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 416 | APPEND_STR("{"); |
| 417 | APPEND_EXPR(e->v.SetComp.elt, PR_TEST); |
| 418 | APPEND(comprehensions, e->v.SetComp.generators); |
| 419 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | static int |
| 423 | append_ast_dictcomp(_PyUnicodeWriter *writer, expr_ty e) |
| 424 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 425 | APPEND_STR("{"); |
| 426 | APPEND_EXPR(e->v.DictComp.key, PR_TEST); |
| 427 | APPEND_STR(": "); |
| 428 | APPEND_EXPR(e->v.DictComp.value, PR_TEST); |
| 429 | APPEND(comprehensions, e->v.DictComp.generators); |
| 430 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 431 | } |
| 432 | |
| 433 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 434 | append_ast_compare(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 435 | { |
| 436 | const char *op; |
| 437 | Py_ssize_t i, comparator_count; |
| 438 | asdl_seq *comparators; |
| 439 | asdl_int_seq *ops; |
| 440 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 441 | APPEND_STR_IF(level > PR_CMP, "("); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 442 | |
| 443 | comparators = e->v.Compare.comparators; |
| 444 | ops = e->v.Compare.ops; |
| 445 | comparator_count = asdl_seq_LEN(comparators); |
| 446 | assert(comparator_count > 0); |
| 447 | assert(comparator_count == asdl_seq_LEN(ops)); |
| 448 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 449 | APPEND_EXPR(e->v.Compare.left, PR_CMP + 1); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 450 | |
| 451 | for (i = 0; i < comparator_count; i++) { |
| 452 | switch ((cmpop_ty)asdl_seq_GET(ops, i)) { |
| 453 | case Eq: |
| 454 | op = " == "; |
| 455 | break; |
| 456 | case NotEq: |
| 457 | op = " != "; |
| 458 | break; |
| 459 | case Lt: |
| 460 | op = " < "; |
| 461 | break; |
| 462 | case LtE: |
| 463 | op = " <= "; |
| 464 | break; |
| 465 | case Gt: |
| 466 | op = " > "; |
| 467 | break; |
| 468 | case GtE: |
| 469 | op = " >= "; |
| 470 | break; |
| 471 | case Is: |
| 472 | op = " is "; |
| 473 | break; |
| 474 | case IsNot: |
| 475 | op = " is not "; |
| 476 | break; |
| 477 | case In: |
| 478 | op = " in "; |
| 479 | break; |
| 480 | case NotIn: |
| 481 | op = " not in "; |
| 482 | break; |
| 483 | default: |
| 484 | PyErr_SetString(PyExc_SystemError, |
| 485 | "unexpected comparison kind"); |
| 486 | return -1; |
| 487 | } |
| 488 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 489 | APPEND_STR(op); |
| 490 | 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] | 491 | } |
| 492 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 493 | APPEND_STR_IF(level > PR_CMP, ")"); |
| 494 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 495 | } |
| 496 | |
| 497 | static int |
| 498 | append_ast_keyword(_PyUnicodeWriter *writer, keyword_ty kw) |
| 499 | { |
| 500 | if (kw->arg == NULL) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 501 | APPEND_STR("**"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 502 | } |
| 503 | else { |
| 504 | if (-1 == _PyUnicodeWriter_WriteStr(writer, kw->arg)) { |
| 505 | return -1; |
| 506 | } |
| 507 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 508 | APPEND_STR("="); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 509 | } |
| 510 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 511 | APPEND_EXPR(kw->value, PR_TEST); |
| 512 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 513 | } |
| 514 | |
| 515 | static int |
| 516 | append_ast_call(_PyUnicodeWriter *writer, expr_ty e) |
| 517 | { |
| 518 | bool first; |
| 519 | Py_ssize_t i, arg_count, kw_count; |
| 520 | expr_ty expr; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 521 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 522 | APPEND_EXPR(e->v.Call.func, PR_ATOM); |
| 523 | |
| 524 | arg_count = asdl_seq_LEN(e->v.Call.args); |
| 525 | kw_count = asdl_seq_LEN(e->v.Call.keywords); |
| 526 | if (arg_count == 1 && kw_count == 0) { |
| 527 | expr = (expr_ty)asdl_seq_GET(e->v.Call.args, 0); |
| 528 | if (expr->kind == GeneratorExp_kind) { |
| 529 | /* Special case: a single generator expression. */ |
| 530 | return append_ast_genexp(writer, expr); |
| 531 | } |
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("("); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 535 | |
| 536 | first = true; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 537 | for (i = 0; i < arg_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 538 | APPEND_STR_IF_NOT_FIRST(", "); |
| 539 | 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] | 540 | } |
| 541 | |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 542 | for (i = 0; i < kw_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 543 | APPEND_STR_IF_NOT_FIRST(", "); |
| 544 | 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] | 545 | } |
| 546 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 547 | APPEND_STR_FINISH(")"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | static PyObject * |
| 551 | escape_braces(PyObject *orig) |
| 552 | { |
| 553 | PyObject *temp; |
| 554 | PyObject *result; |
| 555 | temp = PyUnicode_Replace(orig, _str_open_br, _str_dbl_open_br, -1); |
| 556 | if (!temp) { |
| 557 | return NULL; |
| 558 | } |
| 559 | result = PyUnicode_Replace(temp, _str_close_br, _str_dbl_close_br, -1); |
| 560 | Py_DECREF(temp); |
| 561 | return result; |
| 562 | } |
| 563 | |
| 564 | static int |
| 565 | append_fstring_unicode(_PyUnicodeWriter *writer, PyObject *unicode) |
| 566 | { |
| 567 | PyObject *escaped; |
| 568 | int result = -1; |
| 569 | escaped = escape_braces(unicode); |
| 570 | if (escaped) { |
| 571 | result = _PyUnicodeWriter_WriteStr(writer, escaped); |
| 572 | Py_DECREF(escaped); |
| 573 | } |
| 574 | return result; |
| 575 | } |
| 576 | |
| 577 | static int |
| 578 | append_fstring_element(_PyUnicodeWriter *writer, expr_ty e, bool is_format_spec) |
| 579 | { |
| 580 | switch (e->kind) { |
| 581 | case Constant_kind: |
| 582 | return append_fstring_unicode(writer, e->v.Constant.value); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 583 | case JoinedStr_kind: |
| 584 | return append_joinedstr(writer, e, is_format_spec); |
| 585 | case FormattedValue_kind: |
| 586 | return append_formattedvalue(writer, e, is_format_spec); |
| 587 | default: |
| 588 | PyErr_SetString(PyExc_SystemError, |
| 589 | "unknown expression kind inside f-string"); |
| 590 | return -1; |
| 591 | } |
| 592 | } |
| 593 | |
| 594 | /* Build body separately to enable wrapping the entire stream of Strs, |
| 595 | Constants and FormattedValues in one opening and one closing quote. */ |
| 596 | static PyObject * |
| 597 | build_fstring_body(asdl_seq *values, bool is_format_spec) |
| 598 | { |
| 599 | Py_ssize_t i, value_count; |
| 600 | _PyUnicodeWriter body_writer; |
| 601 | _PyUnicodeWriter_Init(&body_writer); |
| 602 | body_writer.min_length = 256; |
| 603 | body_writer.overallocate = 1; |
| 604 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 605 | value_count = asdl_seq_LEN(values); |
| 606 | for (i = 0; i < value_count; ++i) { |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 607 | if (-1 == append_fstring_element(&body_writer, |
| 608 | (expr_ty)asdl_seq_GET(values, i), |
| 609 | is_format_spec |
| 610 | )) { |
| 611 | _PyUnicodeWriter_Dealloc(&body_writer); |
| 612 | return NULL; |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | return _PyUnicodeWriter_Finish(&body_writer); |
| 617 | } |
| 618 | |
| 619 | static int |
| 620 | append_joinedstr(_PyUnicodeWriter *writer, expr_ty e, bool is_format_spec) |
| 621 | { |
| 622 | int result = -1; |
| 623 | PyObject *body = build_fstring_body(e->v.JoinedStr.values, is_format_spec); |
| 624 | if (!body) { |
| 625 | return -1; |
| 626 | } |
| 627 | |
| 628 | if (!is_format_spec) { |
| 629 | if (-1 != append_charp(writer, "f") && |
| 630 | -1 != append_repr(writer, body)) |
| 631 | { |
| 632 | result = 0; |
| 633 | } |
| 634 | } |
| 635 | else { |
| 636 | result = _PyUnicodeWriter_WriteStr(writer, body); |
| 637 | } |
| 638 | Py_DECREF(body); |
| 639 | return result; |
| 640 | } |
| 641 | |
| 642 | static int |
| 643 | append_formattedvalue(_PyUnicodeWriter *writer, expr_ty e, bool is_format_spec) |
| 644 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 645 | const char *conversion; |
| 646 | const char *outer_brace = "{"; |
| 647 | /* Grammar allows PR_TUPLE, but use >PR_TEST for adding parenthesis |
| 648 | around a lambda with ':' */ |
| 649 | 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] | 650 | if (!temp_fv_str) { |
| 651 | return -1; |
| 652 | } |
| 653 | if (PyUnicode_Find(temp_fv_str, _str_open_br, 0, 1, 1) == 0) { |
| 654 | /* Expression starts with a brace, split it with a space from the outer |
| 655 | one. */ |
| 656 | outer_brace = "{ "; |
| 657 | } |
| 658 | if (-1 == append_charp(writer, outer_brace)) { |
| 659 | Py_DECREF(temp_fv_str); |
| 660 | return -1; |
| 661 | } |
| 662 | if (-1 == _PyUnicodeWriter_WriteStr(writer, temp_fv_str)) { |
| 663 | Py_DECREF(temp_fv_str); |
| 664 | return -1; |
| 665 | } |
| 666 | Py_DECREF(temp_fv_str); |
| 667 | |
| 668 | if (e->v.FormattedValue.conversion > 0) { |
| 669 | switch (e->v.FormattedValue.conversion) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 670 | case 'a': |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 671 | conversion = "!a"; |
| 672 | break; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 673 | case 'r': |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 674 | conversion = "!r"; |
| 675 | break; |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 676 | case 's': |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 677 | conversion = "!s"; |
| 678 | break; |
| 679 | default: |
| 680 | PyErr_SetString(PyExc_SystemError, |
| 681 | "unknown f-value conversion kind"); |
| 682 | return -1; |
| 683 | } |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 684 | APPEND_STR(conversion); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 685 | } |
Stéphane Wirtel | 83ab995 | 2018-02-01 17:59:27 +0100 | [diff] [blame] | 686 | if (e->v.FormattedValue.format_spec) { |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 687 | if (-1 == _PyUnicodeWriter_WriteASCIIString(writer, ":", 1) || |
| 688 | -1 == append_fstring_element(writer, |
| 689 | e->v.FormattedValue.format_spec, |
| 690 | true |
| 691 | )) |
| 692 | { |
| 693 | return -1; |
| 694 | } |
| 695 | } |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 696 | |
| 697 | APPEND_STR_FINISH("}"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 698 | } |
| 699 | |
| 700 | static int |
| 701 | append_ast_attribute(_PyUnicodeWriter *writer, expr_ty e) |
| 702 | { |
| 703 | const char *period; |
Serhiy Storchaka | 3f22811 | 2018-09-27 17:42:37 +0300 | [diff] [blame] | 704 | expr_ty v = e->v.Attribute.value; |
| 705 | APPEND_EXPR(v, PR_ATOM); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 706 | |
| 707 | /* Special case: integers require a space for attribute access to be |
Serhiy Storchaka | 3f22811 | 2018-09-27 17:42:37 +0300 | [diff] [blame] | 708 | unambiguous. */ |
| 709 | if (v->kind == Constant_kind && PyLong_CheckExact(v->v.Constant.value)) { |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 710 | period = " ."; |
| 711 | } |
| 712 | else { |
| 713 | period = "."; |
| 714 | } |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 715 | APPEND_STR(period); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 716 | |
| 717 | return _PyUnicodeWriter_WriteStr(writer, e->v.Attribute.attr); |
| 718 | } |
| 719 | |
| 720 | static int |
| 721 | append_ast_simple_slice(_PyUnicodeWriter *writer, slice_ty slice) |
| 722 | { |
| 723 | if (slice->v.Slice.lower) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 724 | APPEND_EXPR(slice->v.Slice.lower, PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 725 | } |
| 726 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 727 | APPEND_STR(":"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 728 | |
| 729 | if (slice->v.Slice.upper) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 730 | APPEND_EXPR(slice->v.Slice.upper, PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | if (slice->v.Slice.step) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 734 | APPEND_STR(":"); |
| 735 | APPEND_EXPR(slice->v.Slice.step, PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 736 | } |
| 737 | return 0; |
| 738 | } |
| 739 | |
| 740 | static int |
| 741 | append_ast_ext_slice(_PyUnicodeWriter *writer, slice_ty slice) |
| 742 | { |
| 743 | Py_ssize_t i, dims_count; |
| 744 | dims_count = asdl_seq_LEN(slice->v.ExtSlice.dims); |
| 745 | for (i = 0; i < dims_count; i++) { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 746 | APPEND_STR_IF(i > 0, ", "); |
| 747 | 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] | 748 | } |
| 749 | return 0; |
| 750 | } |
| 751 | |
| 752 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 753 | append_ast_slice(_PyUnicodeWriter *writer, slice_ty slice) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 754 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 755 | switch (slice->kind) { |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 756 | case Slice_kind: |
| 757 | return append_ast_simple_slice(writer, slice); |
| 758 | case ExtSlice_kind: |
| 759 | return append_ast_ext_slice(writer, slice); |
| 760 | case Index_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 761 | APPEND_EXPR(slice->v.Index.value, PR_TUPLE); |
| 762 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 763 | default: |
| 764 | PyErr_SetString(PyExc_SystemError, |
| 765 | "unexpected slice kind"); |
| 766 | return -1; |
| 767 | } |
| 768 | } |
| 769 | |
| 770 | static int |
| 771 | append_ast_subscript(_PyUnicodeWriter *writer, expr_ty e) |
| 772 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 773 | APPEND_EXPR(e->v.Subscript.value, PR_ATOM); |
| 774 | APPEND_STR("["); |
| 775 | APPEND(slice, e->v.Subscript.slice); |
| 776 | APPEND_STR_FINISH("]"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 777 | } |
| 778 | |
| 779 | static int |
| 780 | append_ast_starred(_PyUnicodeWriter *writer, expr_ty e) |
| 781 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 782 | APPEND_STR("*"); |
| 783 | APPEND_EXPR(e->v.Starred.value, PR_EXPR); |
| 784 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 785 | } |
| 786 | |
| 787 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 788 | append_ast_yield(_PyUnicodeWriter *writer, expr_ty e) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 789 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 790 | if (!e->v.Yield.value) { |
| 791 | APPEND_STR_FINISH("(yield)"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 792 | } |
| 793 | |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 794 | APPEND_STR("(yield "); |
| 795 | APPEND_EXPR(e->v.Yield.value, PR_TEST); |
| 796 | APPEND_STR_FINISH(")"); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 797 | } |
| 798 | |
| 799 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 800 | append_ast_yield_from(_PyUnicodeWriter *writer, expr_ty e) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 801 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 802 | APPEND_STR("(yield from "); |
| 803 | APPEND_EXPR(e->v.YieldFrom.value, PR_TEST); |
| 804 | APPEND_STR_FINISH(")"); |
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_await(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 809 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 810 | APPEND_STR_IF(level > PR_AWAIT, "("); |
| 811 | APPEND_STR("await "); |
| 812 | APPEND_EXPR(e->v.Await.value, PR_ATOM); |
| 813 | APPEND_STR_IF(level > PR_AWAIT, ")"); |
| 814 | return 0; |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 815 | } |
| 816 | |
| 817 | static int |
Batuhan Taşkaya | fa19a25 | 2019-05-19 01:10:20 +0300 | [diff] [blame] | 818 | append_named_expr(_PyUnicodeWriter *writer, expr_ty e, int level) |
| 819 | { |
| 820 | APPEND_STR_IF(level > PR_TUPLE, "("); |
| 821 | APPEND_EXPR(e->v.NamedExpr.target, PR_ATOM); |
| 822 | APPEND_STR(":="); |
| 823 | APPEND_EXPR(e->v.NamedExpr.value, PR_ATOM); |
| 824 | APPEND_STR_IF(level > PR_TUPLE, ")"); |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | static int |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 829 | append_ast_expr(_PyUnicodeWriter *writer, expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 830 | { |
| 831 | switch (e->kind) { |
| 832 | case BoolOp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 833 | return append_ast_boolop(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 834 | case BinOp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 835 | return append_ast_binop(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 836 | case UnaryOp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 837 | return append_ast_unaryop(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 838 | case Lambda_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 839 | return append_ast_lambda(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 840 | case IfExp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 841 | return append_ast_ifexp(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 842 | case Dict_kind: |
| 843 | return append_ast_dict(writer, e); |
| 844 | case Set_kind: |
| 845 | return append_ast_set(writer, e); |
| 846 | case GeneratorExp_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 847 | return append_ast_genexp(writer, e); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 848 | case ListComp_kind: |
| 849 | return append_ast_listcomp(writer, e); |
| 850 | case SetComp_kind: |
| 851 | return append_ast_setcomp(writer, e); |
| 852 | case DictComp_kind: |
| 853 | return append_ast_dictcomp(writer, e); |
| 854 | case Yield_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 855 | return append_ast_yield(writer, e); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 856 | case YieldFrom_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 857 | return append_ast_yield_from(writer, e); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 858 | case Await_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 859 | return append_ast_await(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 860 | case Compare_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 861 | return append_ast_compare(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 862 | case Call_kind: |
| 863 | return append_ast_call(writer, e); |
| 864 | case Constant_kind: |
Serhiy Storchaka | 3f22811 | 2018-09-27 17:42:37 +0300 | [diff] [blame] | 865 | if (e->v.Constant.value == Py_Ellipsis) { |
| 866 | APPEND_STR_FINISH("..."); |
| 867 | } |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 868 | return append_repr(writer, e->v.Constant.value); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 869 | case JoinedStr_kind: |
| 870 | return append_joinedstr(writer, e, false); |
| 871 | case FormattedValue_kind: |
| 872 | return append_formattedvalue(writer, e, false); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 873 | /* The following exprs can be assignment targets. */ |
| 874 | case Attribute_kind: |
| 875 | return append_ast_attribute(writer, e); |
| 876 | case Subscript_kind: |
| 877 | return append_ast_subscript(writer, e); |
| 878 | case Starred_kind: |
| 879 | return append_ast_starred(writer, e); |
| 880 | case Name_kind: |
| 881 | return _PyUnicodeWriter_WriteStr(writer, e->v.Name.id); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 882 | case List_kind: |
| 883 | return append_ast_list(writer, e); |
| 884 | case Tuple_kind: |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 885 | return append_ast_tuple(writer, e, level); |
Batuhan Taşkaya | fa19a25 | 2019-05-19 01:10:20 +0300 | [diff] [blame] | 886 | case NamedExpr_kind: |
| 887 | return append_named_expr(writer, e, level); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 888 | default: |
| 889 | PyErr_SetString(PyExc_SystemError, |
| 890 | "unknown expression kind"); |
| 891 | return -1; |
| 892 | } |
| 893 | } |
| 894 | |
| 895 | static int |
Stéphane Wirtel | 83ab995 | 2018-02-01 17:59:27 +0100 | [diff] [blame] | 896 | maybe_init_static_strings(void) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 897 | { |
| 898 | if (!_str_open_br && |
| 899 | !(_str_open_br = PyUnicode_InternFromString("{"))) { |
| 900 | return -1; |
| 901 | } |
| 902 | if (!_str_dbl_open_br && |
| 903 | !(_str_dbl_open_br = PyUnicode_InternFromString("{{"))) { |
| 904 | return -1; |
| 905 | } |
| 906 | if (!_str_close_br && |
| 907 | !(_str_close_br = PyUnicode_InternFromString("}"))) { |
| 908 | return -1; |
| 909 | } |
| 910 | if (!_str_dbl_close_br && |
| 911 | !(_str_dbl_close_br = PyUnicode_InternFromString("}}"))) { |
| 912 | return -1; |
| 913 | } |
| 914 | return 0; |
| 915 | } |
| 916 | |
| 917 | static PyObject * |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 918 | expr_as_unicode(expr_ty e, int level) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 919 | { |
| 920 | _PyUnicodeWriter writer; |
| 921 | _PyUnicodeWriter_Init(&writer); |
| 922 | writer.min_length = 256; |
| 923 | writer.overallocate = 1; |
| 924 | if (-1 == maybe_init_static_strings() || |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 925 | -1 == append_ast_expr(&writer, e, level)) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 926 | { |
| 927 | _PyUnicodeWriter_Dealloc(&writer); |
| 928 | return NULL; |
| 929 | } |
| 930 | return _PyUnicodeWriter_Finish(&writer); |
| 931 | } |
| 932 | |
| 933 | PyObject * |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 934 | _PyAST_ExprAsUnicode(expr_ty e) |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 935 | { |
Serhiy Storchaka | 64fddc4 | 2018-05-17 06:17:48 +0300 | [diff] [blame] | 936 | return expr_as_unicode(e, PR_TEST); |
Guido van Rossum | 95e4d58 | 2018-01-26 08:20:18 -0800 | [diff] [blame] | 937 | } |