summaryrefslogtreecommitdiff
path: root/src/ai/api/squirrel_export.awk
blob: d2ea8cc0ce5ac20900e13c3fbc0a715deba17e88 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
# $Id$

# This file is part of OpenTTD.
# OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
# OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.

#
# Awk script to automatically generate the code needed
# to export the AI API to Squirrel.
#
# Note that arrays are 1 based...
#

# Simple insertion sort.
function array_sort(ARRAY, ELEMENTS, temp, i, j)
{
	for (i = 2; i <= ELEMENTS; i++)
		for (j = i; ARRAY[j - 1] > ARRAY[j]; --j) {
			temp = ARRAY[j]
			ARRAY[j] = ARRAY[j - 1]
			ARRAY[j - 1] = temp
	}
	return
}

function dump_class_templates(name)
{
	print "	template <> "       name " *GetParam(ForceType<"       name " *>, HSQUIRRELVM vm, int index, SQAutoFreePointers *ptr) { SQUserPointer instance; sq_getinstanceup(vm, index, &instance, 0); return  (" name " *)instance; }"
	print "	template <> "       name " &GetParam(ForceType<"       name " &>, HSQUIRRELVM vm, int index, SQAutoFreePointers *ptr) { SQUserPointer instance; sq_getinstanceup(vm, index, &instance, 0); return *(" name " *)instance; }"
	print "	template <> const " name " *GetParam(ForceType<const " name " *>, HSQUIRRELVM vm, int index, SQAutoFreePointers *ptr) { SQUserPointer instance; sq_getinstanceup(vm, index, &instance, 0); return  (" name " *)instance; }"
	print "	template <> const " name " &GetParam(ForceType<const " name " &>, HSQUIRRELVM vm, int index, SQAutoFreePointers *ptr) { SQUserPointer instance; sq_getinstanceup(vm, index, &instance, 0); return *(" name " *)instance; }"
	if (name == "AIEvent") {
		print "	template <> int Return<" name " *>(HSQUIRRELVM vm, " name " *res) { if (res == NULL) { sq_pushnull(vm); return 1; } Squirrel::CreateClassInstanceVM(vm, \"" name "\", res, NULL, DefSQDestructorCallback<" name ">); return 1; }"
	} else {
		print "	template <> int Return<" name " *>(HSQUIRRELVM vm, " name " *res) { if (res == NULL) { sq_pushnull(vm); return 1; } res->AddRef(); Squirrel::CreateClassInstanceVM(vm, \"" name "\", res, NULL, DefSQDestructorCallback<" name ">); return 1; }"
	}
}

BEGIN {
	enum_size = 0
	enum_value_size = 0
	enum_string_to_error_size = 0
	enum_error_to_string_size = 0
	const_size = 0
	struct_size = 0
	method_size = 0
	static_method_size = 0
	virtual_class = "false"
	super_cls = ""
	cls = ""
	start_squirrel_define_on_next_line = "false"
	cls_level = 0
	RS = "\r|\n"
}

/@file/ {
	# Break it, so SVN doesn't replace it
	print "/* $I" "d$ */"
	print ""
	print "/*"
	print " * This file is part of OpenTTD."
	print " * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2."
	print " * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
	print " * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>."
	print " */"
	print ""
	print "/* THIS FILE IS AUTO-GENERATED; PLEASE DO NOT ALTER MANUALLY */"
	print ""
	print "#include \"" $3 "\""
}

# Remove the old squirrel stuff
/#ifdef DEFINE_SQUIRREL_CLASS/ { squirrel_stuff = "true";  next; }
/^#endif \/\* DEFINE_SQUIRREL_CLASS \*\// { if (squirrel_stuff == "true") { squirrel_stuff = "false"; next; } }
{ if (squirrel_stuff == "true") next; }

# Ignore forward declarations of classes
/^(	*)class(.*);/ { next; }
# We only want to have public functions exported for now
/^(	*)class/     {
	if (cls_level == 0) {
		public = "false"
		cls_param[0] = ""
		cls_param[1] = 1
		cls_param[2] = "x"
		cls = $2
		if (match($4, "public") || match($4, "protected") || match($4, "private")) {
			super_cls = $5
		} else {
			super_cls = $4
		}
	} else if (cls_level == 1) {
		struct_size++
		structs[struct_size] = cls "::" $2
	}
	cls_level++
	next
}
/^(	*)public/    { if (cls_level == 1) public = "true";  next; }
/^(	*)protected/ { if (cls_level == 1) public = "false"; next; }
/^(	*)private/   { if (cls_level == 1) public = "false"; next; }

# Ignore special doxygen blocks
/^#ifndef DOXYGEN_SKIP/          { doxygen_skip = "next"; next; }
/^#ifdef DOXYGEN_SKIP/           { doxygen_skip = "true"; next; }
/^#endif \/\* DOXYGEN_SKIP \*\// { doxygen_skip = "false"; next; }
/^#else/                         {
	if (doxygen_skip == "next") {
		doxygen_skip = "true";
	} else {
		doxygen_skip = "false";
	}
	next;
}
{ if (doxygen_skip == "true") next }

# Ignore functions that shouldn't be exported to squirrel
/^#ifndef EXPORT_SKIP/          { export_skip = "true"; next; }
/^#endif \/\* EXPORT_SKIP \*\// { export_skip = "false"; next; }
{ if (export_skip == "true") next }

# Ignore the comments
/^#/             { next; }
/\/\*.*\*\//     { comment = "false"; next; }
/\/\*/           { comment = "true";  next; }
/\*\//           { comment = "false"; next; }
{ if (comment == "true") next }

# We need to make specialized conversions for structs
/^(	*)struct/ {
	cls_level++
	if (public == "false") next
	if (cls_level != 1) next
	struct_size++
	structs[struct_size] = cls "::" $2
	next
}

# We need to make specialized conversions for enums
/^(	*)enum/ {
	cls_level++
	if (public == "false") next;
	in_enum = "true"
	enum_size++
	enums[enum_size] = cls "::" $2
	next
}

# Maybe the end of the class, if so we can start with the Squirrel export pretty soon
/};/ {
	cls_level--
	if (cls_level != 0) {
		in_enum = "false";
		next;
	}
	if (cls == "") {
		next;
	}
	start_squirrel_define_on_next_line = "true"
	next;
}

# Empty/white lines. When we may do the Squirrel export, do that export.
/^([ 	]*)$/ {
	if (start_squirrel_define_on_next_line == "false") next
	spaces = "                                                               ";
	public = "false"
	namespace_opened = "false"

	print ""

	# First check whether we have enums to print
	if (enum_size != 0) {
		if (namespace_opened == "false") {
			print "namespace SQConvert {"
			namespace_opened = "true"
		}
		print "	/* Allow enums to be used as Squirrel parameters */"
		for (i = 1; i <= enum_size; i++) {
			print "	template <> " enums[i] " GetParam(ForceType<" enums[i] ">, HSQUIRRELVM vm, int index, SQAutoFreePointers *ptr) { SQInteger tmp; sq_getinteger(vm, index, &tmp); return (" enums[i] ")tmp; }"
			print "	template <> int Return<" enums[i] ">(HSQUIRRELVM vm, " enums[i] " res) { sq_pushinteger(vm, (int32)res); return 1; }"
			delete enums[i]
		}
	}

	# Then check whether we have structs/classes to print
	if (struct_size != 0) {
		if (namespace_opened == "false") {
			print "namespace SQConvert {"
			namespace_opened = "true"
		}
		print "	/* Allow inner classes/structs to be used as Squirrel parameters */"
		for (i = 1; i <= struct_size; i++) {
			dump_class_templates(structs[i])
			delete structs[i]
		}
	}

	if (namespace_opened == "false") {
		print "namespace SQConvert {"
		namespace_opened = "true"
	} else {
		print ""
	}
	print "	/* Allow " cls " to be used as Squirrel parameter */"
	dump_class_templates(cls)

	print "}; // namespace SQConvert"

	print "";
	# Then do the registration functions of the class. */
	print "void SQ" cls "_Register(Squirrel *engine)"
	print "{"
	print "	DefSQClass <" cls "> SQ" cls "(\"" cls "\");"
	if (super_cls == "AIObject" || super_cls == "AIAbstractList::Valuator") {
		print "	SQ" cls ".PreRegister(engine);"
	} else {
		print "	SQ" cls ".PreRegister(engine, \"" super_cls "\");"
	}
	if (virtual_class == "false" && super_cls != "AIEvent") {
		print "	SQ" cls ".AddConstructor<void (" cls "::*)(" cls_param[0] "), " cls_param[1]">(engine, \"" cls_param[2] "\");"
	}
	print ""

	# Enum values
	mlen = 0
	for (i = 1; i <= enum_value_size; i++) {
		if (mlen <= length(enum_value[i])) mlen = length(enum_value[i])
	}
	for (i = 1; i <= enum_value_size; i++) {
		print "	SQ" cls ".DefSQConst(engine, " cls "::" enum_value[i] ", " substr(spaces, 1, mlen - length(enum_value[i])) "\""  enum_value[i] "\");"
		delete enum_value[i]
	}
	if (enum_value_size != 0) print ""

	# Const values
	mlen = 0
	for (i = 1; i <= const_size; i++) {
		if (mlen <= length(const_value[i])) mlen = length(const_value[i])
	}
	for (i = 1; i <= const_size; i++) {
		print "	SQ" cls ".DefSQConst(engine, " cls "::" const_value[i] ", " substr(spaces, 1, mlen - length(const_value[i])) "\""  const_value[i] "\");"
		delete const_value[i]
	}
	if (const_size != 0) print ""

	# Mapping of OTTD strings to errors
	mlen = 0
	for (i = 1; i <= enum_string_to_error_size; i++) {
		if (mlen <= length(enum_string_to_error_mapping_string[i])) mlen = length(enum_string_to_error_mapping_string[i])
	}
	for (i = 1; i <= enum_string_to_error_size; i++) {
		print "	AIError::RegisterErrorMap(" enum_string_to_error_mapping_string[i] ", " substr(spaces, 1, mlen - length(enum_string_to_error_mapping_string[i]))  cls "::" enum_string_to_error_mapping_error[i] ");"

		delete enum_string_to_error_mapping_string[i]
	}
	if (enum_string_to_error_size != 0) print ""

	# Mapping of errors to human 'readable' strings.
	mlen = 0
	for (i = 1; i <= enum_error_to_string_size; i++) {
		if (mlen <= length(enum_error_to_string_mapping[i])) mlen = length(enum_error_to_string_mapping[i])
	}
	for (i = 1; i <= enum_error_to_string_size; i++) {
		print "	AIError::RegisterErrorMapString(" cls "::" enum_error_to_string_mapping[i] ", " substr(spaces, 1, mlen - length(enum_error_to_string_mapping[i])) "\"" enum_error_to_string_mapping[i] "\");"
		delete enum_error_to_string_mapping[i]
	}
	if (enum_error_to_string_size != 0) print ""

	# Static methods
	mlen = 0
	for (i = 1; i <= static_method_size; i++) {
		if (mlen <= length(static_methods[i, 0])) mlen = length(static_methods[i, 0])
	}
	for (i = 1; i <= static_method_size; i++) {
		print "	SQ" cls ".DefSQStaticMethod(engine, &" cls "::" static_methods[i, 0] ", " substr(spaces, 1, mlen - length(static_methods[i, 0])) "\""  static_methods[i, 0] "\", " substr(spaces, 1, mlen - length(static_methods[i, 0])) "" static_methods[i, 1] ", \"" static_methods[i, 2] "\");"
		delete static_methods[i]
	}
	if (static_method_size != 0) print ""

	if (virtual_class == "false") {
		# Non-static methods
		mlen = 0
		for (i = 1; i <= method_size; i++) {
			if (mlen <= length(methods[i, 0])) mlen = length(methods[i, 0])
		}
		for (i = 1; i <= method_size; i++) {
			if (methods[i, 2] == "v") {
				print "	SQ" cls ".DefSQAdvancedMethod(engine, &" cls "::" methods[i, 0] ", " substr(spaces, 1, mlen - length(methods[i, 0]) - 8) "\""  methods[i, 0] "\");"
			} else {
				print "	SQ" cls ".DefSQMethod(engine, &" cls "::" methods[i, 0] ", " substr(spaces, 1, mlen - length(methods[i, 0])) "\""  methods[i, 0] "\", " substr(spaces, 1, mlen - length(methods[i, 0])) "" methods[i, 1] ", \"" methods[i, 2] "\");"
			}
			delete methods[i]
		}
		if (method_size != 0) print ""
	}
	print "	SQ" cls ".PostRegister(engine);"
	print "}"

	enum_size = 0
	enum_value_size = 0
	enum_string_to_error_size = 0
	enum_error_to_string_size = 0
	struct_size = 0
	method_size = 0
	static_method_size = 0
	virtual_class = "false"
	cls = ""
	start_squirrel_define_on_next_line = "false"
	cls_level = 0
}

# Skip non-public functions
{ if (public == "false") next }

# Add enums
{
	if (in_enum == "true") {
		enum_value_size++
		sub(",", "", $1)
		enum_value[enum_value_size] = $1

		# Check if this a special error enum
		if (match(enums[enum_size], ".*::ErrorMessages") != 0) {
			# syntax:
			# enum ErrorMessages {
			#	ERR_SOME_ERROR,	// [STR_ITEM1, STR_ITEM2, ...]
			# }

			# Set the mappings
			if (match($0, "\\[.*\\]") != 0) {
				mappings = substr($0, RSTART, RLENGTH);
				gsub("([\\[[:space:]\\]])", "", mappings);

				split(mappings, mapitems, ",");
				for (i = 1; i <= length(mapitems); i++) {
					enum_string_to_error_size++
					enum_string_to_error_mapping_string[enum_string_to_error_size] = mapitems[i]
					enum_string_to_error_mapping_error[enum_string_to_error_size] = $1
				}

				enum_error_to_string_size++
				enum_error_to_string_mapping[enum_error_to_string_size] = $1
			}
		}
		next
	}
}

# Add a const (non-enum) value
/^[ 	]*static const \w+ \w+ = -?\(?\w*\)?\w+;/ {
	const_size++
	const_value[const_size] = $4
	next
}

# Add a method to the list
/^.*\(.*\).*$/ {
	if (cls_level != 1) next
	if (match($0, "~")) next

	is_static = match($0, "static")
	if (match($0, "virtual")) {
		virtual_class = "true"
	}
	gsub("virtual", "", $0)
	gsub("static", "", $0)
	gsub("const", "", $0)
	gsub("{.*", "", $0)
	param_s = $0
	gsub("\\*", "", $0)
	gsub("\\(.*", "", $0)

	sub(".*\\(", "", param_s)
	sub("\\).*", "", param_s)

	funcname = $2
	if ($1 == cls && funcname == "") {
		cls_param[0] = param_s
		if (param_s == "") next
	} else if (funcname == "") next

	split(param_s, params, ",")
	if (is_static) {
		types = "."
	} else {
		types = "x"
	}
	for (len = 1; params[len] != ""; len++) {
		sub("^[ 	]*", "", params[len])
		if (match(params[len], "\\*") || match(params[len], "&")) {
			if (match(params[len], "^char")) {
				types = types "."
			} else if (match(params[len], "^void")) {
				types = types "p"
			} else if (match(params[len], "^Array")) {
				types = types "a"
			} else if (match(params[len], "^struct Array")) {
				types = types "a"
			} else {
				types = types "x"
			}
		} else if (match(params[len], "^bool")) {
			types = types "b"
		} else if (match(params[len], "^HSQUIRRELVM")) {
			types = "v"
		} else {
			types = types "i"
		}
	}

	if ($1 == cls && funcname == "") {
		cls_param[1] = len;
		cls_param[2] = types;
	} else if (substr(funcname, 0, 1) == "_" && types != "v") {
	} else if (funcname == "GetClassName" && types == ".") {
	} else if (is_static) {
		static_method_size++
		static_methods[static_method_size, 0] = funcname
		static_methods[static_method_size, 1] = len
		static_methods[static_method_size, 2] = types
	} else {
		method_size++
		methods[method_size, 0] = funcname
		methods[method_size, 1] = len
		methods[method_size, 2] = types
	}
	next
}