Benjamin Peterson | f51d36a | 2011-12-29 12:07:21 -0600 | [diff] [blame] | 1 | #! /usr/bin/env python |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 2 | """Generate C code from an ASDL description.""" |
| 3 | |
Batuhan Taskaya | 63b8e0c | 2020-05-18 20:42:10 +0300 | [diff] [blame] | 4 | import os |
| 5 | import sys |
| 6 | |
| 7 | from argparse import ArgumentParser |
| 8 | from pathlib import Path |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 9 | |
| 10 | import asdl |
| 11 | |
Victor Stinner | ce72e1c | 2013-07-27 00:00:36 +0200 | [diff] [blame] | 12 | TABSIZE = 4 |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 13 | MAX_COL = 80 |
Batuhan Taskaya | 63b8e0c | 2020-05-18 20:42:10 +0300 | [diff] [blame] | 14 | AUTOGEN_MESSAGE = "/* File automatically generated by {}. */\n\n" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 15 | |
| 16 | def get_c_type(name): |
| 17 | """Return a string for the C name of the type. |
| 18 | |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 19 | This function special cases the default types provided by asdl. |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 20 | """ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 21 | if name in asdl.builtin_types: |
| 22 | return name |
| 23 | else: |
| 24 | return "%s_ty" % name |
| 25 | |
| 26 | def reflow_lines(s, depth): |
| 27 | """Reflow the line s indented depth tabs. |
| 28 | |
| 29 | Return a sequence of lines where no line extends beyond MAX_COL |
| 30 | when properly indented. The first line is properly indented based |
| 31 | exclusively on depth * TABSIZE. All following lines -- these are |
| 32 | the reflowed lines generated by this function -- start at the same |
| 33 | column as the first character beyond the opening { in the first |
| 34 | line. |
| 35 | """ |
| 36 | size = MAX_COL - depth * TABSIZE |
| 37 | if len(s) < size: |
| 38 | return [s] |
| 39 | |
| 40 | lines = [] |
| 41 | cur = s |
| 42 | padding = "" |
| 43 | while len(cur) > size: |
| 44 | i = cur.rfind(' ', 0, size) |
| 45 | # XXX this should be fixed for real |
| 46 | if i == -1 and 'GeneratorExp' in cur: |
| 47 | i = size + 3 |
Brett Cannon | f036551 | 2006-08-25 04:06:31 +0000 | [diff] [blame] | 48 | assert i != -1, "Impossible line %d to reflow: %r" % (size, s) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 49 | lines.append(padding + cur[:i]) |
| 50 | if len(lines) == 1: |
| 51 | # find new size based on brace |
| 52 | j = cur.find('{', 0, i) |
| 53 | if j >= 0: |
| 54 | j += 2 # account for the brace and the space after it |
| 55 | size -= j |
| 56 | padding = " " * j |
| 57 | else: |
| 58 | j = cur.find('(', 0, i) |
| 59 | if j >= 0: |
| 60 | j += 1 # account for the paren (no space after it) |
| 61 | size -= j |
| 62 | padding = " " * j |
| 63 | cur = cur[i+1:] |
| 64 | else: |
| 65 | lines.append(padding + cur) |
| 66 | return lines |
| 67 | |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 68 | def reflow_c_string(s, depth): |
| 69 | return '"%s"' % s.replace('\n', '\\n"\n%s"' % (' ' * depth * TABSIZE)) |
| 70 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 71 | def is_simple(sum): |
| 72 | """Return True if a sum is a simple. |
| 73 | |
| 74 | A sum is simple if its types have no fields, e.g. |
| 75 | unaryop = Invert | Not | UAdd | USub |
| 76 | """ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 77 | for t in sum.types: |
| 78 | if t.fields: |
| 79 | return False |
| 80 | return True |
| 81 | |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 82 | def asdl_of(name, obj): |
| 83 | if isinstance(obj, asdl.Product) or isinstance(obj, asdl.Constructor): |
| 84 | fields = ", ".join(map(str, obj.fields)) |
| 85 | if fields: |
| 86 | fields = "({})".format(fields) |
| 87 | return "{}{}".format(name, fields) |
| 88 | else: |
| 89 | if is_simple(obj): |
| 90 | types = " | ".join(type.name for type in obj.types) |
| 91 | else: |
| 92 | sep = "\n{}| ".format(" " * (len(name) + 1)) |
| 93 | types = sep.join( |
| 94 | asdl_of(type.name, type) for type in obj.types |
| 95 | ) |
| 96 | return "{} = {}".format(name, types) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 97 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 98 | class EmitVisitor(asdl.VisitorBase): |
| 99 | """Visit that emits lines""" |
| 100 | |
| 101 | def __init__(self, file): |
| 102 | self.file = file |
Martin v. Löwis | 1ee1b6f | 2011-10-10 18:11:30 +0200 | [diff] [blame] | 103 | self.identifiers = set() |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 104 | self.singletons = set() |
| 105 | self.types = set() |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 106 | super(EmitVisitor, self).__init__() |
| 107 | |
Martin v. Löwis | 1ee1b6f | 2011-10-10 18:11:30 +0200 | [diff] [blame] | 108 | def emit_identifier(self, name): |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 109 | self.identifiers.add(str(name)) |
| 110 | |
| 111 | def emit_singleton(self, name): |
| 112 | self.singletons.add(str(name)) |
| 113 | |
| 114 | def emit_type(self, name): |
| 115 | self.types.add(str(name)) |
Martin v. Löwis | 1ee1b6f | 2011-10-10 18:11:30 +0200 | [diff] [blame] | 116 | |
Benjamin Peterson | 87c8d87 | 2009-06-11 22:54:11 +0000 | [diff] [blame] | 117 | def emit(self, s, depth, reflow=True): |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 118 | # XXX reflow long lines? |
| 119 | if reflow: |
| 120 | lines = reflow_lines(s, depth) |
| 121 | else: |
| 122 | lines = [s] |
| 123 | for line in lines: |
Serhiy Storchaka | 5d84cb3 | 2017-09-15 06:28:22 +0300 | [diff] [blame] | 124 | if line: |
| 125 | line = (" " * TABSIZE * depth) + line |
| 126 | self.file.write(line + "\n") |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 127 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 128 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 129 | class TypeDefVisitor(EmitVisitor): |
| 130 | def visitModule(self, mod): |
| 131 | for dfn in mod.dfns: |
| 132 | self.visit(dfn) |
| 133 | |
| 134 | def visitType(self, type, depth=0): |
| 135 | self.visit(type.value, type.name, depth) |
| 136 | |
| 137 | def visitSum(self, sum, name, depth): |
| 138 | if is_simple(sum): |
| 139 | self.simple_sum(sum, name, depth) |
| 140 | else: |
| 141 | self.sum_with_constructors(sum, name, depth) |
| 142 | |
| 143 | def simple_sum(self, sum, name, depth): |
| 144 | enum = [] |
| 145 | for i in range(len(sum.types)): |
| 146 | type = sum.types[i] |
| 147 | enum.append("%s=%d" % (type.name, i + 1)) |
| 148 | enums = ", ".join(enum) |
| 149 | ctype = get_c_type(name) |
| 150 | s = "typedef enum _%s { %s } %s;" % (name, enums, ctype) |
| 151 | self.emit(s, depth) |
| 152 | self.emit("", depth) |
| 153 | |
| 154 | def sum_with_constructors(self, sum, name, depth): |
| 155 | ctype = get_c_type(name) |
| 156 | s = "typedef struct _%(name)s *%(ctype)s;" % locals() |
| 157 | self.emit(s, depth) |
| 158 | self.emit("", depth) |
| 159 | |
| 160 | def visitProduct(self, product, name, depth): |
| 161 | ctype = get_c_type(name) |
| 162 | s = "typedef struct _%(name)s *%(ctype)s;" % locals() |
| 163 | self.emit(s, depth) |
| 164 | self.emit("", depth) |
| 165 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 166 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 167 | class StructVisitor(EmitVisitor): |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 168 | """Visitor to generate typedefs for AST.""" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 169 | |
| 170 | def visitModule(self, mod): |
| 171 | for dfn in mod.dfns: |
| 172 | self.visit(dfn) |
| 173 | |
| 174 | def visitType(self, type, depth=0): |
| 175 | self.visit(type.value, type.name, depth) |
| 176 | |
| 177 | def visitSum(self, sum, name, depth): |
| 178 | if not is_simple(sum): |
| 179 | self.sum_with_constructors(sum, name, depth) |
| 180 | |
| 181 | def sum_with_constructors(self, sum, name, depth): |
| 182 | def emit(s, depth=depth): |
| 183 | self.emit(s % sys._getframe(1).f_locals, depth) |
| 184 | enum = [] |
| 185 | for i in range(len(sum.types)): |
| 186 | type = sum.types[i] |
| 187 | enum.append("%s_kind=%d" % (type.name, i + 1)) |
| 188 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 189 | emit("enum _%(name)s_kind {" + ", ".join(enum) + "};") |
| 190 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 191 | emit("struct _%(name)s {") |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 192 | emit("enum _%(name)s_kind kind;", depth + 1) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 193 | emit("union {", depth + 1) |
| 194 | for t in sum.types: |
| 195 | self.visit(t, depth + 2) |
| 196 | emit("} v;", depth + 1) |
| 197 | for field in sum.attributes: |
| 198 | # rudimentary attribute handling |
| 199 | type = str(field.type) |
| 200 | assert type in asdl.builtin_types, type |
| 201 | emit("%s %s;" % (type, field.name), depth + 1); |
| 202 | emit("};") |
| 203 | emit("") |
| 204 | |
| 205 | def visitConstructor(self, cons, depth): |
| 206 | if cons.fields: |
| 207 | self.emit("struct {", depth) |
| 208 | for f in cons.fields: |
| 209 | self.visit(f, depth + 1) |
| 210 | self.emit("} %s;" % cons.name, depth) |
| 211 | self.emit("", depth) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 212 | |
| 213 | def visitField(self, field, depth): |
| 214 | # XXX need to lookup field.type, because it might be something |
| 215 | # like a builtin... |
| 216 | ctype = get_c_type(field.type) |
| 217 | name = field.name |
| 218 | if field.seq: |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 219 | if field.type == 'cmpop': |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 220 | self.emit("asdl_int_seq *%(name)s;" % locals(), depth) |
| 221 | else: |
| 222 | self.emit("asdl_seq *%(name)s;" % locals(), depth) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 223 | else: |
| 224 | self.emit("%(ctype)s %(name)s;" % locals(), depth) |
| 225 | |
| 226 | def visitProduct(self, product, name, depth): |
| 227 | self.emit("struct _%(name)s {" % locals(), depth) |
| 228 | for f in product.fields: |
| 229 | self.visit(f, depth + 1) |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 230 | for field in product.attributes: |
| 231 | # rudimentary attribute handling |
| 232 | type = str(field.type) |
| 233 | assert type in asdl.builtin_types, type |
| 234 | self.emit("%s %s;" % (type, field.name), depth + 1); |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 235 | self.emit("};", depth) |
| 236 | self.emit("", depth) |
| 237 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 238 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 239 | class PrototypeVisitor(EmitVisitor): |
| 240 | """Generate function prototypes for the .h file""" |
| 241 | |
| 242 | def visitModule(self, mod): |
| 243 | for dfn in mod.dfns: |
| 244 | self.visit(dfn) |
| 245 | |
| 246 | def visitType(self, type): |
| 247 | self.visit(type.value, type.name) |
| 248 | |
| 249 | def visitSum(self, sum, name): |
| 250 | if is_simple(sum): |
| 251 | pass # XXX |
| 252 | else: |
| 253 | for t in sum.types: |
| 254 | self.visit(t, name, sum.attributes) |
| 255 | |
| 256 | def get_args(self, fields): |
| 257 | """Return list of C argument into, one for each field. |
| 258 | |
| 259 | Argument info is 3-tuple of a C type, variable name, and flag |
| 260 | that is true if type can be NULL. |
| 261 | """ |
| 262 | args = [] |
| 263 | unnamed = {} |
| 264 | for f in fields: |
| 265 | if f.name is None: |
| 266 | name = f.type |
| 267 | c = unnamed[name] = unnamed.get(name, 0) + 1 |
| 268 | if c > 1: |
| 269 | name = "name%d" % (c - 1) |
| 270 | else: |
| 271 | name = f.name |
| 272 | # XXX should extend get_c_type() to handle this |
| 273 | if f.seq: |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 274 | if f.type == 'cmpop': |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 275 | ctype = "asdl_int_seq *" |
| 276 | else: |
| 277 | ctype = "asdl_seq *" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 278 | else: |
| 279 | ctype = get_c_type(f.type) |
| 280 | args.append((ctype, name, f.opt or f.seq)) |
| 281 | return args |
| 282 | |
| 283 | def visitConstructor(self, cons, type, attrs): |
| 284 | args = self.get_args(cons.fields) |
| 285 | attrs = self.get_args(attrs) |
| 286 | ctype = get_c_type(type) |
| 287 | self.emit_function(cons.name, ctype, args, attrs) |
| 288 | |
Benjamin Peterson | 87c8d87 | 2009-06-11 22:54:11 +0000 | [diff] [blame] | 289 | def emit_function(self, name, ctype, args, attrs, union=True): |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 290 | args = args + attrs |
| 291 | if args: |
| 292 | argstr = ", ".join(["%s %s" % (atype, aname) |
| 293 | for atype, aname, opt in args]) |
Neal Norwitz | adb69fc | 2005-12-17 20:54:49 +0000 | [diff] [blame] | 294 | argstr += ", PyArena *arena" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 295 | else: |
Neal Norwitz | adb69fc | 2005-12-17 20:54:49 +0000 | [diff] [blame] | 296 | argstr = "PyArena *arena" |
Thomas Wouters | b213704 | 2007-02-01 18:02:27 +0000 | [diff] [blame] | 297 | margs = "a0" |
| 298 | for i in range(1, len(args)+1): |
| 299 | margs += ", a%d" % i |
| 300 | self.emit("#define %s(%s) _Py_%s(%s)" % (name, margs, name, margs), 0, |
Benjamin Peterson | 87c8d87 | 2009-06-11 22:54:11 +0000 | [diff] [blame] | 301 | reflow=False) |
| 302 | self.emit("%s _Py_%s(%s);" % (ctype, name, argstr), False) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 303 | |
| 304 | def visitProduct(self, prod, name): |
| 305 | self.emit_function(name, get_c_type(name), |
Victor Stinner | c106c68 | 2015-11-06 17:01:48 +0100 | [diff] [blame] | 306 | self.get_args(prod.fields), |
| 307 | self.get_args(prod.attributes), |
| 308 | union=False) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 309 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 310 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 311 | class FunctionVisitor(PrototypeVisitor): |
| 312 | """Visitor to generate constructor functions for AST.""" |
| 313 | |
Benjamin Peterson | 87c8d87 | 2009-06-11 22:54:11 +0000 | [diff] [blame] | 314 | def emit_function(self, name, ctype, args, attrs, union=True): |
| 315 | def emit(s, depth=0, reflow=True): |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 316 | self.emit(s, depth, reflow) |
| 317 | argstr = ", ".join(["%s %s" % (atype, aname) |
| 318 | for atype, aname, opt in args + attrs]) |
Neal Norwitz | adb69fc | 2005-12-17 20:54:49 +0000 | [diff] [blame] | 319 | if argstr: |
| 320 | argstr += ", PyArena *arena" |
| 321 | else: |
| 322 | argstr = "PyArena *arena" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 323 | self.emit("%s" % ctype, 0) |
| 324 | emit("%s(%s)" % (name, argstr)) |
| 325 | emit("{") |
| 326 | emit("%s p;" % ctype, 1) |
| 327 | for argtype, argname, opt in args: |
Neal Norwitz | 3591bbe | 2007-02-26 19:04:49 +0000 | [diff] [blame] | 328 | if not opt and argtype != "int": |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 329 | emit("if (!%s) {" % argname, 1) |
| 330 | emit("PyErr_SetString(PyExc_ValueError,", 2) |
Batuhan Taskaya | 091951a | 2020-05-06 17:29:32 +0300 | [diff] [blame] | 331 | msg = "field '%s' is required for %s" % (argname, name) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 332 | emit(' "%s");' % msg, |
Benjamin Peterson | 87c8d87 | 2009-06-11 22:54:11 +0000 | [diff] [blame] | 333 | 2, reflow=False) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 334 | emit('return NULL;', 2) |
| 335 | emit('}', 1) |
| 336 | |
Neal Norwitz | adb69fc | 2005-12-17 20:54:49 +0000 | [diff] [blame] | 337 | emit("p = (%s)PyArena_Malloc(arena, sizeof(*p));" % ctype, 1); |
Thomas Wouters | a44f3a3 | 2007-02-26 18:20:15 +0000 | [diff] [blame] | 338 | emit("if (!p)", 1) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 339 | emit("return NULL;", 2) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 340 | if union: |
| 341 | self.emit_body_union(name, args, attrs) |
| 342 | else: |
| 343 | self.emit_body_struct(name, args, attrs) |
| 344 | emit("return p;", 1) |
| 345 | emit("}") |
| 346 | emit("") |
| 347 | |
| 348 | def emit_body_union(self, name, args, attrs): |
Benjamin Peterson | 87c8d87 | 2009-06-11 22:54:11 +0000 | [diff] [blame] | 349 | def emit(s, depth=0, reflow=True): |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 350 | self.emit(s, depth, reflow) |
| 351 | emit("p->kind = %s_kind;" % name, 1) |
| 352 | for argtype, argname, opt in args: |
| 353 | emit("p->v.%s.%s = %s;" % (name, argname, argname), 1) |
| 354 | for argtype, argname, opt in attrs: |
| 355 | emit("p->%s = %s;" % (argname, argname), 1) |
| 356 | |
| 357 | def emit_body_struct(self, name, args, attrs): |
Benjamin Peterson | 87c8d87 | 2009-06-11 22:54:11 +0000 | [diff] [blame] | 358 | def emit(s, depth=0, reflow=True): |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 359 | self.emit(s, depth, reflow) |
| 360 | for argtype, argname, opt in args: |
| 361 | emit("p->%s = %s;" % (argname, argname), 1) |
Victor Stinner | c106c68 | 2015-11-06 17:01:48 +0100 | [diff] [blame] | 362 | for argtype, argname, opt in attrs: |
| 363 | emit("p->%s = %s;" % (argname, argname), 1) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 364 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 365 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 366 | class PickleVisitor(EmitVisitor): |
| 367 | |
| 368 | def visitModule(self, mod): |
| 369 | for dfn in mod.dfns: |
| 370 | self.visit(dfn) |
| 371 | |
| 372 | def visitType(self, type): |
| 373 | self.visit(type.value, type.name) |
| 374 | |
| 375 | def visitSum(self, sum, name): |
| 376 | pass |
| 377 | |
| 378 | def visitProduct(self, sum, name): |
| 379 | pass |
| 380 | |
| 381 | def visitConstructor(self, cons, name): |
| 382 | pass |
| 383 | |
| 384 | def visitField(self, sum): |
| 385 | pass |
| 386 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 387 | |
| 388 | class Obj2ModPrototypeVisitor(PickleVisitor): |
| 389 | def visitProduct(self, prod, name): |
| 390 | code = "static int obj2ast_%s(PyObject* obj, %s* out, PyArena* arena);" |
| 391 | self.emit(code % (name, get_c_type(name)), 0) |
| 392 | |
| 393 | visitSum = visitProduct |
| 394 | |
| 395 | |
| 396 | class Obj2ModVisitor(PickleVisitor): |
| 397 | def funcHeader(self, name): |
| 398 | ctype = get_c_type(name) |
| 399 | self.emit("int", 0) |
| 400 | self.emit("obj2ast_%s(PyObject* obj, %s* out, PyArena* arena)" % (name, ctype), 0) |
| 401 | self.emit("{", 0) |
Benjamin Peterson | 0e9e98e | 2010-11-20 02:01:45 +0000 | [diff] [blame] | 402 | self.emit("int isinstance;", 1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 403 | self.emit("", 0) |
| 404 | |
Benjamin Peterson | 5b06681 | 2010-11-20 01:38:49 +0000 | [diff] [blame] | 405 | def sumTrailer(self, name, add_label=False): |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 406 | self.emit("", 0) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 407 | # there's really nothing more we can do if this fails ... |
Benjamin Peterson | 5b06681 | 2010-11-20 01:38:49 +0000 | [diff] [blame] | 408 | error = "expected some sort of %s, but got %%R" % name |
| 409 | format = "PyErr_Format(PyExc_TypeError, \"%s\", obj);" |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 410 | self.emit(format % error, 1, reflow=False) |
Benjamin Peterson | 5b06681 | 2010-11-20 01:38:49 +0000 | [diff] [blame] | 411 | if add_label: |
| 412 | self.emit("failed:", 1) |
Benjamin Peterson | 0a4dae5 | 2010-11-21 15:12:34 +0000 | [diff] [blame] | 413 | self.emit("Py_XDECREF(tmp);", 1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 414 | self.emit("return 1;", 1) |
| 415 | self.emit("}", 0) |
| 416 | self.emit("", 0) |
| 417 | |
| 418 | def simpleSum(self, sum, name): |
| 419 | self.funcHeader(name) |
| 420 | for t in sum.types: |
Benjamin Peterson | 97dd987 | 2009-12-13 01:23:39 +0000 | [diff] [blame] | 421 | line = ("isinstance = PyObject_IsInstance(obj, " |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 422 | "astmodulestate_global->%s_type);") |
Benjamin Peterson | 97dd987 | 2009-12-13 01:23:39 +0000 | [diff] [blame] | 423 | self.emit(line % (t.name,), 1) |
| 424 | self.emit("if (isinstance == -1) {", 1) |
| 425 | self.emit("return 1;", 2) |
| 426 | self.emit("}", 1) |
| 427 | self.emit("if (isinstance) {", 1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 428 | self.emit("*out = %s;" % t.name, 2) |
| 429 | self.emit("return 0;", 2) |
| 430 | self.emit("}", 1) |
| 431 | self.sumTrailer(name) |
| 432 | |
| 433 | def buildArgs(self, fields): |
| 434 | return ", ".join(fields + ["arena"]) |
| 435 | |
| 436 | def complexSum(self, sum, name): |
| 437 | self.funcHeader(name) |
Benjamin Peterson | d8f6597 | 2010-11-20 04:31:07 +0000 | [diff] [blame] | 438 | self.emit("PyObject *tmp = NULL;", 1) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 439 | self.emit("PyObject *tp;", 1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 440 | for a in sum.attributes: |
| 441 | self.visitAttributeDeclaration(a, name, sum=sum) |
| 442 | self.emit("", 0) |
| 443 | # XXX: should we only do this for 'expr'? |
| 444 | self.emit("if (obj == Py_None) {", 1) |
| 445 | self.emit("*out = NULL;", 2) |
| 446 | self.emit("return 0;", 2) |
| 447 | self.emit("}", 1) |
| 448 | for a in sum.attributes: |
| 449 | self.visitField(a, name, sum=sum, depth=1) |
| 450 | for t in sum.types: |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 451 | self.emit("tp = astmodulestate_global->%s_type;" % (t.name,), 1) |
| 452 | self.emit("isinstance = PyObject_IsInstance(obj, tp);", 1) |
Benjamin Peterson | 97dd987 | 2009-12-13 01:23:39 +0000 | [diff] [blame] | 453 | self.emit("if (isinstance == -1) {", 1) |
| 454 | self.emit("return 1;", 2) |
| 455 | self.emit("}", 1) |
| 456 | self.emit("if (isinstance) {", 1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 457 | for f in t.fields: |
| 458 | self.visitFieldDeclaration(f, t.name, sum=sum, depth=2) |
| 459 | self.emit("", 0) |
| 460 | for f in t.fields: |
| 461 | self.visitField(f, t.name, sum=sum, depth=2) |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 462 | args = [f.name for f in t.fields] + [a.name for a in sum.attributes] |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 463 | self.emit("*out = %s(%s);" % (t.name, self.buildArgs(args)), 2) |
| 464 | self.emit("if (*out == NULL) goto failed;", 2) |
| 465 | self.emit("return 0;", 2) |
| 466 | self.emit("}", 1) |
Benjamin Peterson | 5b06681 | 2010-11-20 01:38:49 +0000 | [diff] [blame] | 467 | self.sumTrailer(name, True) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 468 | |
| 469 | def visitAttributeDeclaration(self, a, name, sum=sum): |
| 470 | ctype = get_c_type(a.type) |
| 471 | self.emit("%s %s;" % (ctype, a.name), 1) |
| 472 | |
| 473 | def visitSum(self, sum, name): |
| 474 | if is_simple(sum): |
| 475 | self.simpleSum(sum, name) |
| 476 | else: |
| 477 | self.complexSum(sum, name) |
| 478 | |
| 479 | def visitProduct(self, prod, name): |
| 480 | ctype = get_c_type(name) |
| 481 | self.emit("int", 0) |
| 482 | self.emit("obj2ast_%s(PyObject* obj, %s* out, PyArena* arena)" % (name, ctype), 0) |
| 483 | self.emit("{", 0) |
| 484 | self.emit("PyObject* tmp = NULL;", 1) |
| 485 | for f in prod.fields: |
| 486 | self.visitFieldDeclaration(f, name, prod=prod, depth=1) |
Victor Stinner | c106c68 | 2015-11-06 17:01:48 +0100 | [diff] [blame] | 487 | for a in prod.attributes: |
| 488 | self.visitFieldDeclaration(a, name, prod=prod, depth=1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 489 | self.emit("", 0) |
| 490 | for f in prod.fields: |
| 491 | self.visitField(f, name, prod=prod, depth=1) |
Victor Stinner | c106c68 | 2015-11-06 17:01:48 +0100 | [diff] [blame] | 492 | for a in prod.attributes: |
| 493 | self.visitField(a, name, prod=prod, depth=1) |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 494 | args = [f.name for f in prod.fields] |
Victor Stinner | c106c68 | 2015-11-06 17:01:48 +0100 | [diff] [blame] | 495 | args.extend([a.name for a in prod.attributes]) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 496 | self.emit("*out = %s(%s);" % (name, self.buildArgs(args)), 1) |
| 497 | self.emit("return 0;", 1) |
| 498 | self.emit("failed:", 0) |
| 499 | self.emit("Py_XDECREF(tmp);", 1) |
| 500 | self.emit("return 1;", 1) |
| 501 | self.emit("}", 0) |
| 502 | self.emit("", 0) |
| 503 | |
| 504 | def visitFieldDeclaration(self, field, name, sum=None, prod=None, depth=0): |
| 505 | ctype = get_c_type(field.type) |
| 506 | if field.seq: |
| 507 | if self.isSimpleType(field): |
| 508 | self.emit("asdl_int_seq* %s;" % field.name, depth) |
| 509 | else: |
| 510 | self.emit("asdl_seq* %s;" % field.name, depth) |
| 511 | else: |
| 512 | ctype = get_c_type(field.type) |
| 513 | self.emit("%s %s;" % (ctype, field.name), depth) |
| 514 | |
| 515 | def isSimpleSum(self, field): |
| 516 | # XXX can the members of this list be determined automatically? |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 517 | return field.type in ('expr_context', 'boolop', 'operator', |
| 518 | 'unaryop', 'cmpop') |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 519 | |
| 520 | def isNumeric(self, field): |
| 521 | return get_c_type(field.type) in ("int", "bool") |
| 522 | |
| 523 | def isSimpleType(self, field): |
| 524 | return self.isSimpleSum(field) or self.isNumeric(field) |
| 525 | |
| 526 | def visitField(self, field, name, sum=None, prod=None, depth=0): |
| 527 | ctype = get_c_type(field.type) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 528 | line = "if (_PyObject_LookupAttr(obj, astmodulestate_global->%s, &tmp) < 0) {" |
| 529 | self.emit(line % field.name, depth) |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 530 | self.emit("return 1;", depth+1) |
| 531 | self.emit("}", depth) |
Serhiy Storchaka | bba2239 | 2017-11-11 16:41:32 +0200 | [diff] [blame] | 532 | if not field.opt: |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 533 | self.emit("if (tmp == NULL) {", depth) |
| 534 | message = "required field \\\"%s\\\" missing from %s" % (field.name, name) |
| 535 | format = "PyErr_SetString(PyExc_TypeError, \"%s\");" |
| 536 | self.emit(format % message, depth+1, reflow=False) |
| 537 | self.emit("return 1;", depth+1) |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 538 | else: |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 539 | self.emit("if (tmp == NULL || tmp == Py_None) {", depth) |
| 540 | self.emit("Py_CLEAR(tmp);", depth+1) |
| 541 | if self.isNumeric(field): |
| 542 | self.emit("%s = 0;" % field.name, depth+1) |
| 543 | elif not self.isSimpleType(field): |
| 544 | self.emit("%s = NULL;" % field.name, depth+1) |
| 545 | else: |
| 546 | raise TypeError("could not determine the default value for %s" % field.name) |
| 547 | self.emit("}", depth) |
| 548 | self.emit("else {", depth) |
| 549 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 550 | self.emit("int res;", depth+1) |
| 551 | if field.seq: |
| 552 | self.emit("Py_ssize_t len;", depth+1) |
| 553 | self.emit("Py_ssize_t i;", depth+1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 554 | self.emit("if (!PyList_Check(tmp)) {", depth+1) |
| 555 | self.emit("PyErr_Format(PyExc_TypeError, \"%s field \\\"%s\\\" must " |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 556 | "be a list, not a %%.200s\", _PyType_Name(Py_TYPE(tmp)));" % |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 557 | (name, field.name), |
| 558 | depth+2, reflow=False) |
| 559 | self.emit("goto failed;", depth+2) |
| 560 | self.emit("}", depth+1) |
| 561 | self.emit("len = PyList_GET_SIZE(tmp);", depth+1) |
| 562 | if self.isSimpleType(field): |
Antoine Pitrou | d01d396e | 2013-10-12 22:52:43 +0200 | [diff] [blame] | 563 | self.emit("%s = _Py_asdl_int_seq_new(len, arena);" % field.name, depth+1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 564 | else: |
Antoine Pitrou | d01d396e | 2013-10-12 22:52:43 +0200 | [diff] [blame] | 565 | self.emit("%s = _Py_asdl_seq_new(len, arena);" % field.name, depth+1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 566 | self.emit("if (%s == NULL) goto failed;" % field.name, depth+1) |
| 567 | self.emit("for (i = 0; i < len; i++) {", depth+1) |
Yuan Chao Chou | 2af565b | 2017-08-04 10:53:12 -0700 | [diff] [blame] | 568 | self.emit("%s val;" % ctype, depth+2) |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 569 | self.emit("PyObject *tmp2 = PyList_GET_ITEM(tmp, i);", depth+2) |
| 570 | self.emit("Py_INCREF(tmp2);", depth+2) |
| 571 | self.emit("res = obj2ast_%s(tmp2, &val, arena);" % |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 572 | field.type, depth+2, reflow=False) |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 573 | self.emit("Py_DECREF(tmp2);", depth+2) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 574 | self.emit("if (res != 0) goto failed;", depth+2) |
Serhiy Storchaka | cf38060 | 2016-10-07 21:51:28 +0300 | [diff] [blame] | 575 | self.emit("if (len != PyList_GET_SIZE(tmp)) {", depth+2) |
| 576 | self.emit("PyErr_SetString(PyExc_RuntimeError, \"%s field \\\"%s\\\" " |
| 577 | "changed size during iteration\");" % |
| 578 | (name, field.name), |
| 579 | depth+3, reflow=False) |
| 580 | self.emit("goto failed;", depth+3) |
| 581 | self.emit("}", depth+2) |
Yuan Chao Chou | 2af565b | 2017-08-04 10:53:12 -0700 | [diff] [blame] | 582 | self.emit("asdl_seq_SET(%s, i, val);" % field.name, depth+2) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 583 | self.emit("}", depth+1) |
| 584 | else: |
| 585 | self.emit("res = obj2ast_%s(tmp, &%s, arena);" % |
| 586 | (field.type, field.name), depth+1) |
| 587 | self.emit("if (res != 0) goto failed;", depth+1) |
| 588 | |
Victor Stinner | 1acc129 | 2013-07-27 00:03:47 +0200 | [diff] [blame] | 589 | self.emit("Py_CLEAR(tmp);", depth+1) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 590 | self.emit("}", depth) |
| 591 | |
| 592 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 593 | class MarshalPrototypeVisitor(PickleVisitor): |
| 594 | |
| 595 | def prototype(self, sum, name): |
| 596 | ctype = get_c_type(name) |
Neal Norwitz | 6576bd8 | 2005-11-13 18:41:28 +0000 | [diff] [blame] | 597 | self.emit("static int marshal_write_%s(PyObject **, int *, %s);" |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 598 | % (name, ctype), 0) |
| 599 | |
| 600 | visitProduct = visitSum = prototype |
| 601 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 602 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 603 | class PyTypesDeclareVisitor(PickleVisitor): |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 604 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 605 | def visitProduct(self, prod, name): |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 606 | self.emit_type("%s_type" % name) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 607 | self.emit("static PyObject* ast2obj_%s(void*);" % name, 0) |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 608 | if prod.attributes: |
| 609 | for a in prod.attributes: |
| 610 | self.emit_identifier(a.name) |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 611 | self.emit("static const char * const %s_attributes[] = {" % name, 0) |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 612 | for a in prod.attributes: |
| 613 | self.emit('"%s",' % a.name, 1) |
| 614 | self.emit("};", 0) |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 615 | if prod.fields: |
Martin v. Löwis | 1ee1b6f | 2011-10-10 18:11:30 +0200 | [diff] [blame] | 616 | for f in prod.fields: |
| 617 | self.emit_identifier(f.name) |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 618 | self.emit("static const char * const %s_fields[]={" % name,0) |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 619 | for f in prod.fields: |
| 620 | self.emit('"%s",' % f.name, 1) |
| 621 | self.emit("};", 0) |
Tim Peters | 710ab3b | 2006-02-28 18:30:36 +0000 | [diff] [blame] | 622 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 623 | def visitSum(self, sum, name): |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 624 | self.emit_type("%s_type" % name) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 625 | if sum.attributes: |
Martin v. Löwis | 1ee1b6f | 2011-10-10 18:11:30 +0200 | [diff] [blame] | 626 | for a in sum.attributes: |
| 627 | self.emit_identifier(a.name) |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 628 | self.emit("static const char * const %s_attributes[] = {" % name, 0) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 629 | for a in sum.attributes: |
| 630 | self.emit('"%s",' % a.name, 1) |
| 631 | self.emit("};", 0) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 632 | ptype = "void*" |
| 633 | if is_simple(sum): |
| 634 | ptype = get_c_type(name) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 635 | for t in sum.types: |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 636 | self.emit_singleton("%s_singleton" % t.name) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 637 | self.emit("static PyObject* ast2obj_%s(%s);" % (name, ptype), 0) |
| 638 | for t in sum.types: |
| 639 | self.visitConstructor(t, name) |
Tim Peters | 710ab3b | 2006-02-28 18:30:36 +0000 | [diff] [blame] | 640 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 641 | def visitConstructor(self, cons, name): |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 642 | if cons.fields: |
Martin v. Löwis | 1ee1b6f | 2011-10-10 18:11:30 +0200 | [diff] [blame] | 643 | for t in cons.fields: |
| 644 | self.emit_identifier(t.name) |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 645 | self.emit("static const char * const %s_fields[]={" % cons.name, 0) |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 646 | for t in cons.fields: |
| 647 | self.emit('"%s",' % t.name, 1) |
| 648 | self.emit("};",0) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 649 | |
| 650 | class PyTypesVisitor(PickleVisitor): |
| 651 | |
| 652 | def visitModule(self, mod): |
| 653 | self.emit(""" |
INADA Naoki | fc48908 | 2017-01-25 22:33:43 +0900 | [diff] [blame] | 654 | |
Benjamin Peterson | 7e0dbfb | 2012-03-12 09:46:44 -0700 | [diff] [blame] | 655 | typedef struct { |
Victor Stinner | 45e50de | 2012-03-13 01:17:31 +0100 | [diff] [blame] | 656 | PyObject_HEAD |
Benjamin Peterson | 7e0dbfb | 2012-03-12 09:46:44 -0700 | [diff] [blame] | 657 | PyObject *dict; |
| 658 | } AST_object; |
| 659 | |
Benjamin Peterson | 1767e02 | 2012-03-14 21:50:29 -0500 | [diff] [blame] | 660 | static void |
| 661 | ast_dealloc(AST_object *self) |
| 662 | { |
INADA Naoki | a6296d3 | 2017-08-24 14:55:17 +0900 | [diff] [blame] | 663 | /* bpo-31095: UnTrack is needed before calling any callbacks */ |
Eddie Elizondo | 0247e80 | 2019-09-14 09:38:17 -0400 | [diff] [blame] | 664 | PyTypeObject *tp = Py_TYPE(self); |
INADA Naoki | a6296d3 | 2017-08-24 14:55:17 +0900 | [diff] [blame] | 665 | PyObject_GC_UnTrack(self); |
Benjamin Peterson | 1767e02 | 2012-03-14 21:50:29 -0500 | [diff] [blame] | 666 | Py_CLEAR(self->dict); |
Eddie Elizondo | 0247e80 | 2019-09-14 09:38:17 -0400 | [diff] [blame] | 667 | freefunc free_func = PyType_GetSlot(tp, Py_tp_free); |
| 668 | assert(free_func != NULL); |
| 669 | free_func(self); |
| 670 | Py_DECREF(tp); |
Benjamin Peterson | 1767e02 | 2012-03-14 21:50:29 -0500 | [diff] [blame] | 671 | } |
| 672 | |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 673 | static int |
Benjamin Peterson | 8107176 | 2012-07-08 11:03:46 -0700 | [diff] [blame] | 674 | ast_traverse(AST_object *self, visitproc visit, void *arg) |
| 675 | { |
Pablo Galindo | 1cf15af | 2020-05-27 10:03:38 +0100 | [diff] [blame] | 676 | Py_VISIT(Py_TYPE(self)); |
Benjamin Peterson | 8107176 | 2012-07-08 11:03:46 -0700 | [diff] [blame] | 677 | Py_VISIT(self->dict); |
| 678 | return 0; |
| 679 | } |
| 680 | |
Serhiy Storchaka | a5c4228 | 2018-05-31 07:34:34 +0300 | [diff] [blame] | 681 | static int |
Benjamin Peterson | 8107176 | 2012-07-08 11:03:46 -0700 | [diff] [blame] | 682 | ast_clear(AST_object *self) |
| 683 | { |
| 684 | Py_CLEAR(self->dict); |
Serhiy Storchaka | a5c4228 | 2018-05-31 07:34:34 +0300 | [diff] [blame] | 685 | return 0; |
Benjamin Peterson | 8107176 | 2012-07-08 11:03:46 -0700 | [diff] [blame] | 686 | } |
| 687 | |
| 688 | static int |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 689 | ast_type_init(PyObject *self, PyObject *args, PyObject *kw) |
| 690 | { |
| 691 | Py_ssize_t i, numfields = 0; |
| 692 | int res = -1; |
| 693 | PyObject *key, *value, *fields; |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 694 | if (_PyObject_LookupAttr((PyObject*)Py_TYPE(self), astmodulestate_global->_fields, &fields) < 0) { |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 695 | goto cleanup; |
| 696 | } |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 697 | if (fields) { |
| 698 | numfields = PySequence_Size(fields); |
Rémi Lapeyre | c73914a | 2020-05-24 23:12:57 +0200 | [diff] [blame] | 699 | if (numfields == -1) { |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 700 | goto cleanup; |
Rémi Lapeyre | c73914a | 2020-05-24 23:12:57 +0200 | [diff] [blame] | 701 | } |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 702 | } |
INADA Naoki | 4c78c52 | 2017-02-24 02:48:17 +0900 | [diff] [blame] | 703 | |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 704 | res = 0; /* if no error occurs, this stays 0 to the end */ |
INADA Naoki | 4c78c52 | 2017-02-24 02:48:17 +0900 | [diff] [blame] | 705 | if (numfields < PyTuple_GET_SIZE(args)) { |
| 706 | PyErr_Format(PyExc_TypeError, "%.400s constructor takes at most " |
| 707 | "%zd positional argument%s", |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 708 | _PyType_Name(Py_TYPE(self)), |
INADA Naoki | 4c78c52 | 2017-02-24 02:48:17 +0900 | [diff] [blame] | 709 | numfields, numfields == 1 ? "" : "s"); |
| 710 | res = -1; |
| 711 | goto cleanup; |
| 712 | } |
| 713 | for (i = 0; i < PyTuple_GET_SIZE(args); i++) { |
| 714 | /* cannot be reached when fields is NULL */ |
| 715 | PyObject *name = PySequence_GetItem(fields, i); |
| 716 | if (!name) { |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 717 | res = -1; |
| 718 | goto cleanup; |
| 719 | } |
INADA Naoki | 4c78c52 | 2017-02-24 02:48:17 +0900 | [diff] [blame] | 720 | res = PyObject_SetAttr(self, name, PyTuple_GET_ITEM(args, i)); |
| 721 | Py_DECREF(name); |
Rémi Lapeyre | c73914a | 2020-05-24 23:12:57 +0200 | [diff] [blame] | 722 | if (res < 0) { |
INADA Naoki | 4c78c52 | 2017-02-24 02:48:17 +0900 | [diff] [blame] | 723 | goto cleanup; |
Rémi Lapeyre | c73914a | 2020-05-24 23:12:57 +0200 | [diff] [blame] | 724 | } |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 725 | } |
| 726 | if (kw) { |
| 727 | i = 0; /* needed by PyDict_Next */ |
| 728 | while (PyDict_Next(kw, &i, &key, &value)) { |
Rémi Lapeyre | c73914a | 2020-05-24 23:12:57 +0200 | [diff] [blame] | 729 | int contains = PySequence_Contains(fields, key); |
| 730 | if (contains == -1) { |
| 731 | res = -1; |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 732 | goto cleanup; |
Rémi Lapeyre | c73914a | 2020-05-24 23:12:57 +0200 | [diff] [blame] | 733 | } else if (contains == 1) { |
| 734 | Py_ssize_t p = PySequence_Index(fields, key); |
| 735 | if (p == -1) { |
| 736 | res = -1; |
| 737 | goto cleanup; |
| 738 | } |
| 739 | if (p < PyTuple_GET_SIZE(args)) { |
| 740 | PyErr_Format(PyExc_TypeError, |
| 741 | "%.400s got multiple values for argument '%U'", |
| 742 | Py_TYPE(self)->tp_name, key); |
| 743 | res = -1; |
| 744 | goto cleanup; |
| 745 | } |
| 746 | } |
| 747 | res = PyObject_SetAttr(self, key, value); |
| 748 | if (res < 0) { |
| 749 | goto cleanup; |
| 750 | } |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 751 | } |
| 752 | } |
| 753 | cleanup: |
| 754 | Py_XDECREF(fields); |
| 755 | return res; |
| 756 | } |
| 757 | |
Neal Norwitz | ee9b10a | 2008-03-31 05:29:39 +0000 | [diff] [blame] | 758 | /* Pickling support */ |
| 759 | static PyObject * |
| 760 | ast_type_reduce(PyObject *self, PyObject *unused) |
| 761 | { |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 762 | PyObject *dict; |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 763 | if (_PyObject_LookupAttr(self, astmodulestate_global->__dict__, &dict) < 0) { |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 764 | return NULL; |
Neal Norwitz | ee9b10a | 2008-03-31 05:29:39 +0000 | [diff] [blame] | 765 | } |
| 766 | if (dict) { |
Serhiy Storchaka | f320be7 | 2018-01-25 10:49:40 +0200 | [diff] [blame] | 767 | return Py_BuildValue("O()N", Py_TYPE(self), dict); |
Neal Norwitz | ee9b10a | 2008-03-31 05:29:39 +0000 | [diff] [blame] | 768 | } |
| 769 | return Py_BuildValue("O()", Py_TYPE(self)); |
| 770 | } |
| 771 | |
Eddie Elizondo | 3368f3c | 2019-09-19 09:29:05 -0700 | [diff] [blame] | 772 | static PyMemberDef ast_type_members[] = { |
| 773 | {"__dictoffset__", T_PYSSIZET, offsetof(AST_object, dict), READONLY}, |
| 774 | {NULL} /* Sentinel */ |
| 775 | }; |
| 776 | |
Neal Norwitz | ee9b10a | 2008-03-31 05:29:39 +0000 | [diff] [blame] | 777 | static PyMethodDef ast_type_methods[] = { |
| 778 | {"__reduce__", ast_type_reduce, METH_NOARGS, NULL}, |
| 779 | {NULL} |
| 780 | }; |
| 781 | |
Benjamin Peterson | 7e0dbfb | 2012-03-12 09:46:44 -0700 | [diff] [blame] | 782 | static PyGetSetDef ast_type_getsets[] = { |
| 783 | {"__dict__", PyObject_GenericGetDict, PyObject_GenericSetDict}, |
| 784 | {NULL} |
| 785 | }; |
| 786 | |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 787 | static PyType_Slot AST_type_slots[] = { |
| 788 | {Py_tp_dealloc, ast_dealloc}, |
| 789 | {Py_tp_getattro, PyObject_GenericGetAttr}, |
| 790 | {Py_tp_setattro, PyObject_GenericSetAttr}, |
| 791 | {Py_tp_traverse, ast_traverse}, |
| 792 | {Py_tp_clear, ast_clear}, |
Eddie Elizondo | 3368f3c | 2019-09-19 09:29:05 -0700 | [diff] [blame] | 793 | {Py_tp_members, ast_type_members}, |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 794 | {Py_tp_methods, ast_type_methods}, |
| 795 | {Py_tp_getset, ast_type_getsets}, |
| 796 | {Py_tp_init, ast_type_init}, |
| 797 | {Py_tp_alloc, PyType_GenericAlloc}, |
| 798 | {Py_tp_new, PyType_GenericNew}, |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 799 | {Py_tp_free, PyObject_GC_Del}, |
| 800 | {0, 0}, |
| 801 | }; |
| 802 | |
| 803 | static PyType_Spec AST_type_spec = { |
Serhiy Storchaka | bace59d | 2020-03-22 20:33:34 +0200 | [diff] [blame] | 804 | "ast.AST", |
Benjamin Peterson | 7e0dbfb | 2012-03-12 09:46:44 -0700 | [diff] [blame] | 805 | sizeof(AST_object), |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 806 | 0, |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 807 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC, |
| 808 | AST_type_slots |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 809 | }; |
| 810 | |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 811 | static PyObject * |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 812 | make_type(const char *type, PyObject* base, const char* const* fields, int num_fields, const char *doc) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 813 | { |
| 814 | PyObject *fnames, *result; |
| 815 | int i; |
Neal Norwitz | ee9b10a | 2008-03-31 05:29:39 +0000 | [diff] [blame] | 816 | fnames = PyTuple_New(num_fields); |
| 817 | if (!fnames) return NULL; |
| 818 | for (i = 0; i < num_fields; i++) { |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 819 | PyObject *field = PyUnicode_InternFromString(fields[i]); |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 820 | if (!field) { |
| 821 | Py_DECREF(fnames); |
| 822 | return NULL; |
| 823 | } |
| 824 | PyTuple_SET_ITEM(fnames, i, field); |
| 825 | } |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 826 | result = PyObject_CallFunction((PyObject*)&PyType_Type, "s(O){OOOOOs}", |
INADA Naoki | fc48908 | 2017-01-25 22:33:43 +0900 | [diff] [blame] | 827 | type, base, |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 828 | astmodulestate_global->_fields, fnames, |
| 829 | astmodulestate_global->__module__, |
Serhiy Storchaka | bace59d | 2020-03-22 20:33:34 +0200 | [diff] [blame] | 830 | astmodulestate_global->ast, |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 831 | astmodulestate_global->__doc__, doc); |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 832 | Py_DECREF(fnames); |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 833 | return result; |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 834 | } |
| 835 | |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 836 | static int |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 837 | add_attributes(PyObject *type, const char * const *attrs, int num_fields) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 838 | { |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 839 | int i, result; |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 840 | PyObject *s, *l = PyTuple_New(num_fields); |
Benjamin Peterson | 3e5cd1d | 2010-06-27 21:45:24 +0000 | [diff] [blame] | 841 | if (!l) |
| 842 | return 0; |
| 843 | for (i = 0; i < num_fields; i++) { |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 844 | s = PyUnicode_InternFromString(attrs[i]); |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 845 | if (!s) { |
| 846 | Py_DECREF(l); |
| 847 | return 0; |
| 848 | } |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 849 | PyTuple_SET_ITEM(l, i, s); |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 850 | } |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 851 | result = PyObject_SetAttr(type, astmodulestate_global->_attributes, l) >= 0; |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 852 | Py_DECREF(l); |
| 853 | return result; |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 854 | } |
| 855 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 856 | /* Conversion AST -> Python */ |
| 857 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 858 | static PyObject* ast2obj_list(asdl_seq *seq, PyObject* (*func)(void*)) |
| 859 | { |
Benjamin Peterson | 77fa937 | 2012-05-15 10:10:27 -0700 | [diff] [blame] | 860 | Py_ssize_t i, n = asdl_seq_LEN(seq); |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 861 | PyObject *result = PyList_New(n); |
| 862 | PyObject *value; |
| 863 | if (!result) |
| 864 | return NULL; |
| 865 | for (i = 0; i < n; i++) { |
| 866 | value = func(asdl_seq_GET(seq, i)); |
| 867 | if (!value) { |
| 868 | Py_DECREF(result); |
| 869 | return NULL; |
| 870 | } |
| 871 | PyList_SET_ITEM(result, i, value); |
| 872 | } |
| 873 | return result; |
| 874 | } |
| 875 | |
| 876 | static PyObject* ast2obj_object(void *o) |
| 877 | { |
| 878 | if (!o) |
| 879 | o = Py_None; |
| 880 | Py_INCREF((PyObject*)o); |
| 881 | return (PyObject*)o; |
| 882 | } |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 883 | #define ast2obj_constant ast2obj_object |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 884 | #define ast2obj_identifier ast2obj_object |
| 885 | #define ast2obj_string ast2obj_object |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 886 | |
Thomas Wouters | a44f3a3 | 2007-02-26 18:20:15 +0000 | [diff] [blame] | 887 | static PyObject* ast2obj_int(long b) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 888 | { |
Christian Heimes | 2b1c592 | 2007-12-02 22:43:00 +0000 | [diff] [blame] | 889 | return PyLong_FromLong(b); |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 890 | } |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 891 | |
| 892 | /* Conversion Python -> AST */ |
| 893 | |
| 894 | static int obj2ast_object(PyObject* obj, PyObject** out, PyArena* arena) |
| 895 | { |
| 896 | if (obj == Py_None) |
| 897 | obj = NULL; |
Christian Heimes | 70c94e7 | 2013-07-27 00:33:13 +0200 | [diff] [blame] | 898 | if (obj) { |
| 899 | if (PyArena_AddPyObject(arena, obj) < 0) { |
| 900 | *out = NULL; |
| 901 | return -1; |
| 902 | } |
| 903 | Py_INCREF(obj); |
| 904 | } |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 905 | *out = obj; |
| 906 | return 0; |
| 907 | } |
| 908 | |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 909 | static int obj2ast_constant(PyObject* obj, PyObject** out, PyArena* arena) |
| 910 | { |
Serhiy Storchaka | 3f22811 | 2018-09-27 17:42:37 +0300 | [diff] [blame] | 911 | if (PyArena_AddPyObject(arena, obj) < 0) { |
| 912 | *out = NULL; |
| 913 | return -1; |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 914 | } |
Serhiy Storchaka | 3f22811 | 2018-09-27 17:42:37 +0300 | [diff] [blame] | 915 | Py_INCREF(obj); |
Victor Stinner | f2c1aa1 | 2016-01-26 00:40:57 +0100 | [diff] [blame] | 916 | *out = obj; |
| 917 | return 0; |
| 918 | } |
| 919 | |
Benjamin Peterson | 180e635 | 2011-07-22 11:09:07 -0500 | [diff] [blame] | 920 | static int obj2ast_identifier(PyObject* obj, PyObject** out, PyArena* arena) |
Benjamin Peterson | 2193d2b | 2011-07-22 10:50:23 -0500 | [diff] [blame] | 921 | { |
Benjamin Peterson | 180e635 | 2011-07-22 11:09:07 -0500 | [diff] [blame] | 922 | if (!PyUnicode_CheckExact(obj) && obj != Py_None) { |
| 923 | PyErr_SetString(PyExc_TypeError, "AST identifier must be of type str"); |
Benjamin Peterson | 2193d2b | 2011-07-22 10:50:23 -0500 | [diff] [blame] | 924 | return 1; |
| 925 | } |
| 926 | return obj2ast_object(obj, out, arena); |
| 927 | } |
| 928 | |
Guido van Rossum | dcfcd14 | 2019-01-31 03:40:27 -0800 | [diff] [blame] | 929 | static int obj2ast_string(PyObject* obj, PyObject** out, PyArena* arena) |
| 930 | { |
| 931 | if (!PyUnicode_CheckExact(obj) && !PyBytes_CheckExact(obj)) { |
| 932 | PyErr_SetString(PyExc_TypeError, "AST string must be of type str"); |
| 933 | return 1; |
| 934 | } |
| 935 | return obj2ast_object(obj, out, arena); |
| 936 | } |
| 937 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 938 | static int obj2ast_int(PyObject* obj, int* out, PyArena* arena) |
| 939 | { |
| 940 | int i; |
| 941 | if (!PyLong_Check(obj)) { |
Amaury Forgeot d'Arc | 58e8761 | 2011-11-22 21:51:55 +0100 | [diff] [blame] | 942 | PyErr_Format(PyExc_ValueError, "invalid integer value: %R", obj); |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 943 | return 1; |
| 944 | } |
| 945 | |
Serhiy Storchaka | 481d3af | 2015-09-06 23:29:04 +0300 | [diff] [blame] | 946 | i = _PyLong_AsInt(obj); |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 947 | if (i == -1 && PyErr_Occurred()) |
| 948 | return 1; |
| 949 | *out = i; |
| 950 | return 0; |
| 951 | } |
| 952 | |
Benjamin Peterson | 1a6e0d0 | 2008-10-25 15:49:17 +0000 | [diff] [blame] | 953 | static int add_ast_fields(void) |
Benjamin Peterson | 206e307 | 2008-10-19 14:07:49 +0000 | [diff] [blame] | 954 | { |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 955 | PyObject *empty_tuple; |
Benjamin Peterson | 206e307 | 2008-10-19 14:07:49 +0000 | [diff] [blame] | 956 | empty_tuple = PyTuple_New(0); |
| 957 | if (!empty_tuple || |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 958 | PyObject_SetAttrString(astmodulestate_global->AST_type, "_fields", empty_tuple) < 0 || |
| 959 | PyObject_SetAttrString(astmodulestate_global->AST_type, "_attributes", empty_tuple) < 0) { |
Benjamin Peterson | 206e307 | 2008-10-19 14:07:49 +0000 | [diff] [blame] | 960 | Py_XDECREF(empty_tuple); |
| 961 | return -1; |
| 962 | } |
| 963 | Py_DECREF(empty_tuple); |
| 964 | return 0; |
| 965 | } |
| 966 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 967 | """, 0, reflow=False) |
| 968 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 969 | self.emit("static int init_types(void)",0) |
| 970 | self.emit("{", 0) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 971 | self.emit("PyObject *m;", 1) |
| 972 | self.emit("if (PyState_FindModule(&_astmodule) == NULL) {", 1) |
| 973 | self.emit("m = PyModule_Create(&_astmodule);", 2) |
| 974 | self.emit("if (!m) return 0;", 2) |
| 975 | self.emit("PyState_AddModule(m, &_astmodule);", 2) |
| 976 | self.emit("}", 1) |
| 977 | self.emit("astmodulestate *state = astmodulestate_global;", 1) |
| 978 | self.emit("if (state->initialized) return 1;", 1) |
| 979 | self.emit("if (init_identifiers() < 0) return 0;", 1) |
| 980 | self.emit("state->AST_type = PyType_FromSpec(&AST_type_spec);", 1) |
| 981 | self.emit("if (!state->AST_type) return 0;", 1) |
Benjamin Peterson | 206e307 | 2008-10-19 14:07:49 +0000 | [diff] [blame] | 982 | self.emit("if (add_ast_fields() < 0) return 0;", 1) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 983 | for dfn in mod.dfns: |
| 984 | self.visit(dfn) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 985 | self.emit("state->initialized = 1;", 1) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 986 | self.emit("return 1;", 1); |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 987 | self.emit("}", 0) |
| 988 | |
| 989 | def visitProduct(self, prod, name): |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 990 | if prod.fields: |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 991 | fields = name+"_fields" |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 992 | else: |
| 993 | fields = "NULL" |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 994 | self.emit('state->%s_type = make_type("%s", state->AST_type, %s, %d,' % |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 995 | (name, name, fields, len(prod.fields)), 1) |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 996 | self.emit('%s);' % reflow_c_string(asdl_of(name, prod), 2), 2, reflow=False) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 997 | self.emit("if (!state->%s_type) return 0;" % name, 1) |
| 998 | self.emit_type("AST_type") |
| 999 | self.emit_type("%s_type" % name) |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 1000 | if prod.attributes: |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1001 | self.emit("if (!add_attributes(state->%s_type, %s_attributes, %d)) return 0;" % |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 1002 | (name, name, len(prod.attributes)), 1) |
| 1003 | else: |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1004 | self.emit("if (!add_attributes(state->%s_type, NULL, 0)) return 0;" % name, 1) |
Serhiy Storchaka | b7e9525 | 2020-03-10 00:07:47 +0200 | [diff] [blame] | 1005 | self.emit_defaults(name, prod.fields, 1) |
| 1006 | self.emit_defaults(name, prod.attributes, 1) |
Tim Peters | 710ab3b | 2006-02-28 18:30:36 +0000 | [diff] [blame] | 1007 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1008 | def visitSum(self, sum, name): |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 1009 | self.emit('state->%s_type = make_type("%s", state->AST_type, NULL, 0,' % |
Neal Norwitz | 207c9f3 | 2008-03-31 04:42:11 +0000 | [diff] [blame] | 1010 | (name, name), 1) |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 1011 | self.emit('%s);' % reflow_c_string(asdl_of(name, sum), 2), 2, reflow=False) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1012 | self.emit_type("%s_type" % name) |
| 1013 | self.emit("if (!state->%s_type) return 0;" % name, 1) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1014 | if sum.attributes: |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1015 | self.emit("if (!add_attributes(state->%s_type, %s_attributes, %d)) return 0;" % |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1016 | (name, name, len(sum.attributes)), 1) |
| 1017 | else: |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1018 | self.emit("if (!add_attributes(state->%s_type, NULL, 0)) return 0;" % name, 1) |
Serhiy Storchaka | b7e9525 | 2020-03-10 00:07:47 +0200 | [diff] [blame] | 1019 | self.emit_defaults(name, sum.attributes, 1) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1020 | simple = is_simple(sum) |
| 1021 | for t in sum.types: |
| 1022 | self.visitConstructor(t, name, simple) |
Tim Peters | 710ab3b | 2006-02-28 18:30:36 +0000 | [diff] [blame] | 1023 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1024 | def visitConstructor(self, cons, name, simple): |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 1025 | if cons.fields: |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 1026 | fields = cons.name+"_fields" |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 1027 | else: |
| 1028 | fields = "NULL" |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 1029 | self.emit('state->%s_type = make_type("%s", state->%s_type, %s, %d,' % |
Martin v. Löwis | 8d0701d | 2006-02-26 23:40:20 +0000 | [diff] [blame] | 1030 | (cons.name, cons.name, name, fields, len(cons.fields)), 1) |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 1031 | self.emit('%s);' % reflow_c_string(asdl_of(cons.name, cons), 2), 2, reflow=False) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1032 | self.emit("if (!state->%s_type) return 0;" % cons.name, 1) |
| 1033 | self.emit_type("%s_type" % cons.name) |
Serhiy Storchaka | b7e9525 | 2020-03-10 00:07:47 +0200 | [diff] [blame] | 1034 | self.emit_defaults(cons.name, cons.fields, 1) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1035 | if simple: |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1036 | self.emit("state->%s_singleton = PyType_GenericNew((PyTypeObject *)" |
| 1037 | "state->%s_type, NULL, NULL);" % |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1038 | (cons.name, cons.name), 1) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1039 | self.emit("if (!state->%s_singleton) return 0;" % cons.name, 1) |
Tim Peters | 710ab3b | 2006-02-28 18:30:36 +0000 | [diff] [blame] | 1040 | |
Serhiy Storchaka | b7e9525 | 2020-03-10 00:07:47 +0200 | [diff] [blame] | 1041 | def emit_defaults(self, name, fields, depth): |
| 1042 | for field in fields: |
| 1043 | if field.opt: |
| 1044 | self.emit('if (PyObject_SetAttr(state->%s_type, state->%s, Py_None) == -1)' % |
| 1045 | (name, field.name), depth) |
| 1046 | self.emit("return 0;", depth+1) |
| 1047 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 1048 | |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1049 | class ASTModuleVisitor(PickleVisitor): |
| 1050 | |
| 1051 | def visitModule(self, mod): |
| 1052 | self.emit("PyMODINIT_FUNC", 0) |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 1053 | self.emit("PyInit__ast(void)", 0) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1054 | self.emit("{", 0) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1055 | self.emit("PyObject *m;", 1) |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 1056 | self.emit("if (!init_types()) return NULL;", 1) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1057 | self.emit('m = PyState_FindModule(&_astmodule);', 1) |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 1058 | self.emit("if (!m) return NULL;", 1) |
Brandt Bucher | d2f9667 | 2020-02-06 06:45:46 -0800 | [diff] [blame] | 1059 | self.emit('if (PyModule_AddObject(m, "AST", astmodulestate_global->AST_type) < 0) {', 1) |
| 1060 | self.emit('goto error;', 2) |
| 1061 | self.emit('}', 1) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1062 | self.emit('Py_INCREF(astmodulestate(m)->AST_type);', 1) |
Brandt Bucher | d2f9667 | 2020-02-06 06:45:46 -0800 | [diff] [blame] | 1063 | self.emit('if (PyModule_AddIntMacro(m, PyCF_ALLOW_TOP_LEVEL_AWAIT) < 0) {', 1) |
| 1064 | self.emit("goto error;", 2) |
| 1065 | self.emit('}', 1) |
| 1066 | self.emit('if (PyModule_AddIntMacro(m, PyCF_ONLY_AST) < 0) {', 1) |
| 1067 | self.emit("goto error;", 2) |
| 1068 | self.emit('}', 1) |
| 1069 | self.emit('if (PyModule_AddIntMacro(m, PyCF_TYPE_COMMENTS) < 0) {', 1) |
| 1070 | self.emit("goto error;", 2) |
| 1071 | self.emit('}', 1) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1072 | for dfn in mod.dfns: |
| 1073 | self.visit(dfn) |
Martin v. Löwis | 1a21451 | 2008-06-11 05:26:20 +0000 | [diff] [blame] | 1074 | self.emit("return m;", 1) |
Brandt Bucher | d2f9667 | 2020-02-06 06:45:46 -0800 | [diff] [blame] | 1075 | self.emit("error:", 0) |
| 1076 | self.emit("Py_DECREF(m);", 1) |
| 1077 | self.emit("return NULL;", 1) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1078 | self.emit("}", 0) |
| 1079 | |
| 1080 | def visitProduct(self, prod, name): |
| 1081 | self.addObj(name) |
Tim Peters | 710ab3b | 2006-02-28 18:30:36 +0000 | [diff] [blame] | 1082 | |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1083 | def visitSum(self, sum, name): |
| 1084 | self.addObj(name) |
| 1085 | for t in sum.types: |
| 1086 | self.visitConstructor(t, name) |
Tim Peters | 710ab3b | 2006-02-28 18:30:36 +0000 | [diff] [blame] | 1087 | |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1088 | def visitConstructor(self, cons, name): |
| 1089 | self.addObj(cons.name) |
Tim Peters | 710ab3b | 2006-02-28 18:30:36 +0000 | [diff] [blame] | 1090 | |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1091 | def addObj(self, name): |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1092 | self.emit("if (PyModule_AddObject(m, \"%s\", " |
Brandt Bucher | d2f9667 | 2020-02-06 06:45:46 -0800 | [diff] [blame] | 1093 | "astmodulestate_global->%s_type) < 0) {" % (name, name), 1) |
| 1094 | self.emit("goto error;", 2) |
| 1095 | self.emit('}', 1) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1096 | self.emit("Py_INCREF(astmodulestate(m)->%s_type);" % name, 1) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1097 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 1098 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1099 | _SPECIALIZED_SEQUENCES = ('stmt', 'expr') |
| 1100 | |
| 1101 | def find_sequence(fields, doing_specialization): |
| 1102 | """Return True if any field uses a sequence.""" |
| 1103 | for f in fields: |
| 1104 | if f.seq: |
| 1105 | if not doing_specialization: |
| 1106 | return True |
| 1107 | if str(f.type) not in _SPECIALIZED_SEQUENCES: |
| 1108 | return True |
| 1109 | return False |
| 1110 | |
| 1111 | def has_sequence(types, doing_specialization): |
| 1112 | for t in types: |
| 1113 | if find_sequence(t.fields, doing_specialization): |
| 1114 | return True |
| 1115 | return False |
| 1116 | |
| 1117 | |
| 1118 | class StaticVisitor(PickleVisitor): |
Ezio Melotti | 7c4a7e6 | 2013-08-26 01:32:56 +0300 | [diff] [blame] | 1119 | CODE = '''Very simple, always emit this static code. Override CODE''' |
Neal Norwitz | 7b5a604 | 2005-11-13 19:14:20 +0000 | [diff] [blame] | 1120 | |
| 1121 | def visit(self, object): |
| 1122 | self.emit(self.CODE, 0, reflow=False) |
| 1123 | |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 1124 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1125 | class ObjVisitor(PickleVisitor): |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1126 | |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1127 | def func_begin(self, name): |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1128 | ctype = get_c_type(name) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1129 | self.emit("PyObject*", 0) |
| 1130 | self.emit("ast2obj_%s(void* _o)" % (name), 0) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1131 | self.emit("{", 0) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1132 | self.emit("%s o = (%s)_o;" % (ctype, ctype), 1) |
| 1133 | self.emit("PyObject *result = NULL, *value = NULL;", 1) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1134 | self.emit("PyTypeObject *tp;", 1) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1135 | self.emit('if (!o) {', 1) |
INADA Naoki | fc48908 | 2017-01-25 22:33:43 +0900 | [diff] [blame] | 1136 | self.emit("Py_RETURN_NONE;", 2) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1137 | self.emit("}", 1) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1138 | self.emit('', 0) |
| 1139 | |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1140 | def func_end(self): |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1141 | self.emit("return result;", 1) |
| 1142 | self.emit("failed:", 0) |
| 1143 | self.emit("Py_XDECREF(value);", 1) |
| 1144 | self.emit("Py_XDECREF(result);", 1) |
| 1145 | self.emit("return NULL;", 1) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1146 | self.emit("}", 0) |
| 1147 | self.emit("", 0) |
| 1148 | |
| 1149 | def visitSum(self, sum, name): |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1150 | if is_simple(sum): |
| 1151 | self.simpleSum(sum, name) |
| 1152 | return |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1153 | self.func_begin(name) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1154 | self.emit("switch (o->kind) {", 1) |
| 1155 | for i in range(len(sum.types)): |
| 1156 | t = sum.types[i] |
| 1157 | self.visitConstructor(t, i + 1, name) |
| 1158 | self.emit("}", 1) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1159 | for a in sum.attributes: |
| 1160 | self.emit("value = ast2obj_%s(o->%s);" % (a.type, a.name), 1) |
| 1161 | self.emit("if (!value) goto failed;", 1) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1162 | self.emit('if (PyObject_SetAttr(result, astmodulestate_global->%s, value) < 0)' % a.name, 1) |
Martin v. Löwis | 03e5bc0 | 2006-03-02 00:31:27 +0000 | [diff] [blame] | 1163 | self.emit('goto failed;', 2) |
| 1164 | self.emit('Py_DECREF(value);', 1) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1165 | self.func_end() |
Tim Peters | 710ab3b | 2006-02-28 18:30:36 +0000 | [diff] [blame] | 1166 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1167 | def simpleSum(self, sum, name): |
| 1168 | self.emit("PyObject* ast2obj_%s(%s_ty o)" % (name, name), 0) |
| 1169 | self.emit("{", 0) |
| 1170 | self.emit("switch(o) {", 1) |
| 1171 | for t in sum.types: |
| 1172 | self.emit("case %s:" % t.name, 2) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1173 | self.emit("Py_INCREF(astmodulestate_global->%s_singleton);" % t.name, 3) |
| 1174 | self.emit("return astmodulestate_global->%s_singleton;" % t.name, 3) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1175 | self.emit("}", 1) |
Batuhan Taskaya | 091951a | 2020-05-06 17:29:32 +0300 | [diff] [blame] | 1176 | self.emit("Py_UNREACHABLE();", 1); |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1177 | self.emit("}", 0) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1178 | |
| 1179 | def visitProduct(self, prod, name): |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1180 | self.func_begin(name) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1181 | self.emit("tp = (PyTypeObject *)astmodulestate_global->%s_type;" % name, 1) |
| 1182 | self.emit("result = PyType_GenericNew(tp, NULL, NULL);", 1); |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1183 | self.emit("if (!result) return NULL;", 1) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1184 | for field in prod.fields: |
| 1185 | self.visitField(field, name, 1, True) |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 1186 | for a in prod.attributes: |
| 1187 | self.emit("value = ast2obj_%s(o->%s);" % (a.type, a.name), 1) |
| 1188 | self.emit("if (!value) goto failed;", 1) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1189 | self.emit("if (PyObject_SetAttr(result, astmodulestate_global->%s, value) < 0)" % a.name, 1) |
Benjamin Peterson | cda75be | 2013-03-18 10:48:58 -0700 | [diff] [blame] | 1190 | self.emit('goto failed;', 2) |
| 1191 | self.emit('Py_DECREF(value);', 1) |
Martin v. Löwis | 577b5b9 | 2006-02-27 15:23:19 +0000 | [diff] [blame] | 1192 | self.func_end() |
Tim Peters | 536cf99 | 2005-12-25 23:18:31 +0000 | [diff] [blame] | 1193 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1194 | def visitConstructor(self, cons, enum, name): |
| 1195 | self.emit("case %s_kind:" % cons.name, 1) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1196 | self.emit("tp = (PyTypeObject *)astmodulestate_global->%s_type;" % cons.name, 2) |
| 1197 | self.emit("result = PyType_GenericNew(tp, NULL, NULL);", 2); |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1198 | self.emit("if (!result) goto failed;", 2) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1199 | for f in cons.fields: |
| 1200 | self.visitField(f, cons.name, 2, False) |
| 1201 | self.emit("break;", 2) |
| 1202 | |
| 1203 | def visitField(self, field, name, depth, product): |
| 1204 | def emit(s, d): |
| 1205 | self.emit(s, depth + d) |
| 1206 | if product: |
| 1207 | value = "o->%s" % field.name |
| 1208 | else: |
| 1209 | value = "o->v.%s.%s" % (name, field.name) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1210 | self.set(field, value, depth) |
| 1211 | emit("if (!value) goto failed;", 0) |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1212 | emit("if (PyObject_SetAttr(result, astmodulestate_global->%s, value) == -1)" % field.name, 0) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1213 | emit("goto failed;", 1) |
| 1214 | emit("Py_DECREF(value);", 0) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1215 | |
| 1216 | def emitSeq(self, field, value, depth, emit): |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1217 | emit("seq = %s;" % value, 0) |
| 1218 | emit("n = asdl_seq_LEN(seq);", 0) |
| 1219 | emit("value = PyList_New(n);", 0) |
| 1220 | emit("if (!value) goto failed;", 0) |
| 1221 | emit("for (i = 0; i < n; i++) {", 0) |
| 1222 | self.set("value", field, "asdl_seq_GET(seq, i)", depth + 1) |
| 1223 | emit("if (!value1) goto failed;", 1) |
| 1224 | emit("PyList_SET_ITEM(value, i, value1);", 1) |
| 1225 | emit("value1 = NULL;", 1) |
| 1226 | emit("}", 0) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1227 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1228 | def set(self, field, value, depth): |
| 1229 | if field.seq: |
Martin v. Löwis | ce1d5d2 | 2006-02-26 20:51:25 +0000 | [diff] [blame] | 1230 | # XXX should really check for is_simple, but that requires a symbol table |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 1231 | if field.type == "cmpop": |
Martin v. Löwis | ce1d5d2 | 2006-02-26 20:51:25 +0000 | [diff] [blame] | 1232 | # While the sequence elements are stored as void*, |
| 1233 | # ast2obj_cmpop expects an enum |
| 1234 | self.emit("{", depth) |
Benjamin Peterson | 77fa937 | 2012-05-15 10:10:27 -0700 | [diff] [blame] | 1235 | self.emit("Py_ssize_t i, n = asdl_seq_LEN(%s);" % value, depth+1) |
Martin v. Löwis | ce1d5d2 | 2006-02-26 20:51:25 +0000 | [diff] [blame] | 1236 | self.emit("value = PyList_New(n);", depth+1) |
| 1237 | self.emit("if (!value) goto failed;", depth+1) |
| 1238 | self.emit("for(i = 0; i < n; i++)", depth+1) |
| 1239 | # This cannot fail, so no need for error handling |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 1240 | self.emit("PyList_SET_ITEM(value, i, ast2obj_cmpop((cmpop_ty)asdl_seq_GET(%s, i)));" % value, |
| 1241 | depth+2, reflow=False) |
Martin v. Löwis | ce1d5d2 | 2006-02-26 20:51:25 +0000 | [diff] [blame] | 1242 | self.emit("}", depth) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1243 | else: |
Martin v. Löwis | ce1d5d2 | 2006-02-26 20:51:25 +0000 | [diff] [blame] | 1244 | self.emit("value = ast2obj_list(%s, ast2obj_%s);" % (value, field.type), depth) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1245 | else: |
| 1246 | ctype = get_c_type(field.type) |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1247 | self.emit("value = ast2obj_%s(%s);" % (field.type, value), depth, reflow=False) |
Tim Peters | 536cf99 | 2005-12-25 23:18:31 +0000 | [diff] [blame] | 1248 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1249 | |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1250 | class PartingShots(StaticVisitor): |
| 1251 | |
| 1252 | CODE = """ |
| 1253 | PyObject* PyAST_mod2obj(mod_ty t) |
| 1254 | { |
Victor Stinner | bdf630c | 2013-07-17 00:17:15 +0200 | [diff] [blame] | 1255 | if (!init_types()) |
| 1256 | return NULL; |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1257 | return ast2obj_mod(t); |
| 1258 | } |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 1259 | |
Neal Norwitz | db4115f | 2008-03-31 04:20:05 +0000 | [diff] [blame] | 1260 | /* mode is 0 for "exec", 1 for "eval" and 2 for "single" input */ |
| 1261 | mod_ty PyAST_obj2mod(PyObject* ast, PyArena* arena, int mode) |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 1262 | { |
Benjamin Peterson | c2f665e | 2014-02-10 22:19:02 -0500 | [diff] [blame] | 1263 | PyObject *req_type[3]; |
Serhiy Storchaka | 43c9731 | 2019-09-10 13:02:30 +0300 | [diff] [blame] | 1264 | const char * const req_name[] = {"Module", "Expression", "Interactive"}; |
Benjamin Peterson | 97dd987 | 2009-12-13 01:23:39 +0000 | [diff] [blame] | 1265 | int isinstance; |
Benjamin Peterson | c2f665e | 2014-02-10 22:19:02 -0500 | [diff] [blame] | 1266 | |
Steve Dower | b82e17e | 2019-05-23 08:45:22 -0700 | [diff] [blame] | 1267 | if (PySys_Audit("compile", "OO", ast, Py_None) < 0) { |
| 1268 | return NULL; |
| 1269 | } |
| 1270 | |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1271 | req_type[0] = astmodulestate_global->Module_type; |
| 1272 | req_type[1] = astmodulestate_global->Expression_type; |
| 1273 | req_type[2] = astmodulestate_global->Interactive_type; |
Benjamin Peterson | c2f665e | 2014-02-10 22:19:02 -0500 | [diff] [blame] | 1274 | |
Guido van Rossum | 3a32e3b | 2019-02-01 11:37:34 -0800 | [diff] [blame] | 1275 | assert(0 <= mode && mode <= 2); |
Neal Norwitz | db4115f | 2008-03-31 04:20:05 +0000 | [diff] [blame] | 1276 | |
Victor Stinner | bdf630c | 2013-07-17 00:17:15 +0200 | [diff] [blame] | 1277 | if (!init_types()) |
| 1278 | return NULL; |
Neal Norwitz | db4115f | 2008-03-31 04:20:05 +0000 | [diff] [blame] | 1279 | |
Benjamin Peterson | 97dd987 | 2009-12-13 01:23:39 +0000 | [diff] [blame] | 1280 | isinstance = PyObject_IsInstance(ast, req_type[mode]); |
| 1281 | if (isinstance == -1) |
| 1282 | return NULL; |
| 1283 | if (!isinstance) { |
Neal Norwitz | db4115f | 2008-03-31 04:20:05 +0000 | [diff] [blame] | 1284 | PyErr_Format(PyExc_TypeError, "expected %s node, got %.400s", |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1285 | req_name[mode], _PyType_Name(Py_TYPE(ast))); |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 1286 | return NULL; |
| 1287 | } |
Dong-hee Na | a05fcd3 | 2019-10-10 16:41:26 +0900 | [diff] [blame] | 1288 | |
| 1289 | mod_ty res = NULL; |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 1290 | if (obj2ast_mod(ast, &res, arena) != 0) |
| 1291 | return NULL; |
| 1292 | else |
| 1293 | return res; |
| 1294 | } |
| 1295 | |
| 1296 | int PyAST_Check(PyObject* obj) |
| 1297 | { |
Victor Stinner | bdf630c | 2013-07-17 00:17:15 +0200 | [diff] [blame] | 1298 | if (!init_types()) |
| 1299 | return -1; |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1300 | return PyObject_IsInstance(obj, astmodulestate_global->AST_type); |
Martin v. Löwis | 618dc5e | 2008-03-30 20:03:44 +0000 | [diff] [blame] | 1301 | } |
Martin v. Löwis | bd260da | 2006-02-26 19:42:26 +0000 | [diff] [blame] | 1302 | """ |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1303 | |
| 1304 | class ChainOfVisitors: |
| 1305 | def __init__(self, *visitors): |
| 1306 | self.visitors = visitors |
| 1307 | |
| 1308 | def visit(self, object): |
| 1309 | for v in self.visitors: |
| 1310 | v.visit(object) |
Neal Norwitz | 7b5a604 | 2005-11-13 19:14:20 +0000 | [diff] [blame] | 1311 | v.emit("", 0) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1312 | |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1313 | |
| 1314 | def generate_module_def(f, mod): |
| 1315 | # Gather all the data needed for ModuleSpec |
| 1316 | visitor_list = set() |
| 1317 | with open(os.devnull, "w") as devnull: |
| 1318 | visitor = PyTypesDeclareVisitor(devnull) |
| 1319 | visitor.visit(mod) |
| 1320 | visitor_list.add(visitor) |
| 1321 | visitor = PyTypesVisitor(devnull) |
| 1322 | visitor.visit(mod) |
| 1323 | visitor_list.add(visitor) |
| 1324 | |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 1325 | state_strings = { |
Serhiy Storchaka | bace59d | 2020-03-22 20:33:34 +0200 | [diff] [blame] | 1326 | "ast", |
Batuhan Taşkaya | 4ab362c | 2020-03-16 11:12:53 +0300 | [diff] [blame] | 1327 | "_fields", |
| 1328 | "__doc__", |
| 1329 | "__dict__", |
| 1330 | "__module__", |
| 1331 | "_attributes", |
| 1332 | } |
| 1333 | module_state = state_strings.copy() |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1334 | for visitor in visitor_list: |
| 1335 | for identifier in visitor.identifiers: |
| 1336 | module_state.add(identifier) |
| 1337 | state_strings.add(identifier) |
| 1338 | for singleton in visitor.singletons: |
| 1339 | module_state.add(singleton) |
| 1340 | for tp in visitor.types: |
| 1341 | module_state.add(tp) |
| 1342 | state_strings = sorted(state_strings) |
| 1343 | module_state = sorted(module_state) |
| 1344 | f.write('typedef struct {\n') |
| 1345 | f.write(' int initialized;\n') |
| 1346 | for s in module_state: |
| 1347 | f.write(' PyObject *' + s + ';\n') |
| 1348 | f.write('} astmodulestate;\n\n') |
| 1349 | f.write(""" |
| 1350 | #define astmodulestate(o) ((astmodulestate *)PyModule_GetState(o)) |
| 1351 | |
| 1352 | static int astmodule_clear(PyObject *module) |
| 1353 | { |
| 1354 | """) |
| 1355 | for s in module_state: |
| 1356 | f.write(" Py_CLEAR(astmodulestate(module)->" + s + ');\n') |
| 1357 | f.write(""" |
| 1358 | return 0; |
| 1359 | } |
| 1360 | |
| 1361 | static int astmodule_traverse(PyObject *module, visitproc visit, void* arg) |
| 1362 | { |
| 1363 | """) |
| 1364 | for s in module_state: |
| 1365 | f.write(" Py_VISIT(astmodulestate(module)->" + s + ');\n') |
| 1366 | f.write(""" |
| 1367 | return 0; |
| 1368 | } |
| 1369 | |
| 1370 | static void astmodule_free(void* module) { |
| 1371 | astmodule_clear((PyObject*)module); |
| 1372 | } |
| 1373 | |
| 1374 | static struct PyModuleDef _astmodule = { |
| 1375 | PyModuleDef_HEAD_INIT, |
| 1376 | "_ast", |
| 1377 | NULL, |
| 1378 | sizeof(astmodulestate), |
| 1379 | NULL, |
| 1380 | NULL, |
| 1381 | astmodule_traverse, |
| 1382 | astmodule_clear, |
| 1383 | astmodule_free, |
| 1384 | }; |
| 1385 | |
| 1386 | #define astmodulestate_global ((astmodulestate *)PyModule_GetState(PyState_FindModule(&_astmodule))) |
| 1387 | |
| 1388 | """) |
| 1389 | f.write('static int init_identifiers(void)\n') |
| 1390 | f.write('{\n') |
| 1391 | f.write(' astmodulestate *state = astmodulestate_global;\n') |
| 1392 | for identifier in state_strings: |
| 1393 | f.write(' if ((state->' + identifier) |
| 1394 | f.write(' = PyUnicode_InternFromString("') |
| 1395 | f.write(identifier + '")) == NULL) return 0;\n') |
| 1396 | f.write(' return 1;\n') |
| 1397 | f.write('};\n\n') |
| 1398 | |
Batuhan Taskaya | 63b8e0c | 2020-05-18 20:42:10 +0300 | [diff] [blame] | 1399 | def write_header(f, mod): |
| 1400 | f.write('#ifndef Py_PYTHON_AST_H\n') |
| 1401 | f.write('#define Py_PYTHON_AST_H\n') |
| 1402 | f.write('#ifdef __cplusplus\n') |
| 1403 | f.write('extern "C" {\n') |
| 1404 | f.write('#endif\n') |
| 1405 | f.write('\n') |
| 1406 | f.write('#ifndef Py_LIMITED_API\n') |
| 1407 | f.write('#include "asdl.h"\n') |
| 1408 | f.write('\n') |
| 1409 | f.write('#undef Yield /* undefine macro conflicting with <winbase.h> */\n') |
| 1410 | f.write('\n') |
| 1411 | c = ChainOfVisitors(TypeDefVisitor(f), |
| 1412 | StructVisitor(f)) |
| 1413 | c.visit(mod) |
| 1414 | f.write("// Note: these macros affect function definitions, not only call sites.\n") |
| 1415 | PrototypeVisitor(f).visit(mod) |
| 1416 | f.write("\n") |
| 1417 | f.write("PyObject* PyAST_mod2obj(mod_ty t);\n") |
| 1418 | f.write("mod_ty PyAST_obj2mod(PyObject* ast, PyArena* arena, int mode);\n") |
| 1419 | f.write("int PyAST_Check(PyObject* obj);\n") |
| 1420 | f.write("#endif /* !Py_LIMITED_API */\n") |
| 1421 | f.write('\n') |
| 1422 | f.write('#ifdef __cplusplus\n') |
| 1423 | f.write('}\n') |
| 1424 | f.write('#endif\n') |
| 1425 | f.write('#endif /* !Py_PYTHON_AST_H */\n') |
Dino Viehland | ac46eb4 | 2019-09-11 10:16:34 -0700 | [diff] [blame] | 1426 | |
Batuhan Taskaya | 63b8e0c | 2020-05-18 20:42:10 +0300 | [diff] [blame] | 1427 | def write_source(f, mod): |
| 1428 | f.write('#include <stddef.h>\n') |
| 1429 | f.write('\n') |
| 1430 | f.write('#include "Python.h"\n') |
| 1431 | f.write('#include "%s-ast.h"\n' % mod.name) |
| 1432 | f.write('#include "structmember.h" // PyMemberDef\n') |
| 1433 | f.write('\n') |
Thomas Wouters | cf297e4 | 2007-02-23 15:07:44 +0000 | [diff] [blame] | 1434 | |
Batuhan Taskaya | 63b8e0c | 2020-05-18 20:42:10 +0300 | [diff] [blame] | 1435 | generate_module_def(f, mod) |
| 1436 | |
| 1437 | v = ChainOfVisitors( |
| 1438 | PyTypesDeclareVisitor(f), |
| 1439 | PyTypesVisitor(f), |
| 1440 | Obj2ModPrototypeVisitor(f), |
| 1441 | FunctionVisitor(f), |
| 1442 | ObjVisitor(f), |
| 1443 | Obj2ModVisitor(f), |
| 1444 | ASTModuleVisitor(f), |
| 1445 | PartingShots(f), |
| 1446 | ) |
| 1447 | v.visit(mod) |
| 1448 | |
| 1449 | def main(input_file, c_file, h_file, dump_module=False): |
| 1450 | auto_gen_msg = AUTOGEN_MESSAGE.format("/".join(Path(__file__).parts[-2:])) |
| 1451 | mod = asdl.parse(input_file) |
Eli Bendersky | 5e3d338 | 2014-05-09 17:58:22 -0700 | [diff] [blame] | 1452 | if dump_module: |
| 1453 | print('Parsed Module:') |
| 1454 | print(mod) |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1455 | if not asdl.check(mod): |
| 1456 | sys.exit(1) |
Batuhan Taskaya | 63b8e0c | 2020-05-18 20:42:10 +0300 | [diff] [blame] | 1457 | for file, writer in (c_file, write_source), (h_file, write_header): |
| 1458 | if file is not None: |
| 1459 | with file.open("w") as f: |
| 1460 | f.write(auto_gen_msg) |
| 1461 | writer(f, mod) |
| 1462 | print(file, "regenerated.") |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1463 | |
| 1464 | if __name__ == "__main__": |
Batuhan Taskaya | 63b8e0c | 2020-05-18 20:42:10 +0300 | [diff] [blame] | 1465 | parser = ArgumentParser() |
| 1466 | parser.add_argument("input_file", type=Path) |
| 1467 | parser.add_argument("-C", "--c-file", type=Path, default=None) |
| 1468 | parser.add_argument("-H", "--h-file", type=Path, default=None) |
| 1469 | parser.add_argument("-d", "--dump-module", action="store_true") |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 1470 | |
Batuhan Taskaya | 63b8e0c | 2020-05-18 20:42:10 +0300 | [diff] [blame] | 1471 | options = parser.parse_args() |
| 1472 | main(**vars(options)) |