1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2012 Jean Privat <jean@pryen.org>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
18 module abstract_compiler
22 import auto_super_init
25 # Add compiling options
26 redef class ToolContext
28 var opt_output
: OptionString = new OptionString("Output file", "-o", "--output")
30 var opt_no_cc
: OptionBool = new OptionBool("Do not invoke C compiler", "--no-cc")
32 var opt_cc_path
: OptionArray = new OptionArray("Set include path for C header files (may be used more than once)", "--cc-path")
34 var opt_make_flags
: OptionString = new OptionString("Additional options to make", "--make-flags")
36 var opt_compile_dir
: OptionString = new OptionString("Directory used to generate temporary files", "--compile-dir")
38 var opt_hardening
: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
40 var opt_no_shortcut_range
: OptionBool = new OptionBool("Always insantiate a range and its iterator on 'for' loops", "--no-shortcut-range")
41 # --no-check-covariance
42 var opt_no_check_covariance
: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
43 # --no-check-initialization
44 var opt_no_check_initialization
: OptionBool = new OptionBool("Disable isset tests at the end of constructors (dangerous)", "--no-check-initialization")
46 var opt_no_check_assert
: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
48 var opt_no_check_autocast
: OptionBool = new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
50 var opt_no_check_other
: OptionBool = new OptionBool("Disable implicit tests: unset attribute, null receiver (dangerous)", "--no-check-other")
51 # --typing-test-metrics
52 var opt_typing_test_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
54 var opt_no_stacktrace
: OptionBool = new OptionBool("Disables libunwind and generation of C stack traces (can be problematic when compiling to targets such as Android or NaCl)", "--no-stacktrace")
55 # --stack-trace-C-to-Nit-name-binding
56 var opt_stacktrace
: OptionBool = new OptionBool("Enables the use of gperf to bind C to Nit function names when encountering a Stack trace at runtime", "--nit-stacktrace")
61 self.option_context
.add_option
(self.opt_output
, self.opt_no_cc
, self.opt_make_flags
, self.opt_compile_dir
, self.opt_hardening
, self.opt_no_shortcut_range
)
62 self.option_context
.add_option
(self.opt_no_check_covariance
, self.opt_no_check_initialization
, self.opt_no_check_assert
, self.opt_no_check_autocast
, self.opt_no_check_other
)
63 self.option_context
.add_option
(self.opt_typing_test_metrics
)
64 self.option_context
.add_option
(self.opt_stacktrace
)
65 self.option_context
.add_option
(self.opt_no_stacktrace
)
69 redef class ModelBuilder
70 # The list of directories to search for included C headers (-I for C compilers)
71 # The list is initially set with :
72 # * the toolcontext --cc-path option
73 # * the NIT_CC_PATH environment variable
74 # * some heuristics including the NIT_DIR environment variable and the progname of the process
75 # Path can be added (or removed) by the client
76 var cc_paths
= new Array[String]
78 redef init(model
, toolcontext
)
82 # Look for the the Nit clib path
83 var path_env
= "NIT_DIR".environ
84 if not path_env
.is_empty
then
85 var libname
= "{path_env}/clib"
86 if libname
.file_exists
then cc_paths
.add
(libname
)
89 var libname
= "{sys.program_name.dirname}/../clib"
90 if libname
.file_exists
then cc_paths
.add
(libname
.simplify_path
)
92 if cc_paths
.is_empty
then
93 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
96 if toolcontext
.opt_no_stacktrace
.value
and toolcontext
.opt_stacktrace
.value
then
97 print
"Cannot use --nit-stacktrace when --no-stacktrace is activated"
101 # Add user defined cc_paths
102 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
104 path_env
= "NIT_CC_PATH".environ
105 if not path_env
.is_empty
then
106 cc_paths
.append
(path_env
.split_with
(':'))
111 protected fun write_and_make
(compiler
: AbstractCompiler)
113 var mainmodule
= compiler
.mainmodule
115 # Generate the .h and .c files
116 # A single C file regroups many compiled rumtime functions
117 # Note that we do not try to be clever an a small change in a Nit source file may change the content of all the generated .c files
119 self.toolcontext
.info
("*** WRITING C ***", 1)
121 var compile_dir
= toolcontext
.opt_compile_dir
.value
122 if compile_dir
== null then compile_dir
= ".nit_compile"
126 if self.toolcontext
.opt_stacktrace
.value
then compiler
.build_c_to_nit_bindings
128 var orig_dir
=".." # FIXME only works if `compile_dir` is a subdirectory of cwd
130 var outname
= self.toolcontext
.opt_output
.value
131 if outname
== null then
132 outname
= "{mainmodule.name}"
134 var outpath
= orig_dir
.join_path
(outname
).simplify_path
136 var hfilename
= compiler
.header
.file
.name
+ ".h"
137 var hfilepath
= "{compile_dir}/{hfilename}"
138 var h
= new OFStream.open
(hfilepath
)
139 for l
in compiler
.header
.decl_lines
do
143 for l
in compiler
.header
.lines
do
149 var cfiles
= new Array[String]
151 for f
in compiler
.files
do
153 var hfile
: nullable OFStream = null
155 var cfilename
= "{f.name}.0.h"
156 var cfilepath
= "{compile_dir}/{cfilename}"
157 hfile
= new OFStream.open
(cfilepath
)
158 hfile
.write
"#include \"{hfilename}\
"\n"
159 for key
in f
.required_declarations
do
160 if not compiler
.provided_declarations
.has_key
(key
) then
161 print
"No provided declaration for {key}"
164 hfile
.write compiler
.provided_declarations
[key
]
168 var file
: nullable OFStream = null
169 for vis
in f
.writers
do
170 if vis
== compiler
.header
then continue
171 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
172 if total_lines
== 0 then continue
174 if file
== null or count
> 10000 then
176 if file
!= null then file
.close
177 cfilename
= "{f.name}.{i}.c"
178 cfilepath
= "{compile_dir}/{cfilename}"
179 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
180 cfiles
.add
(cfilename
)
181 file
= new OFStream.open
(cfilepath
)
182 file
.write
"#include \"{f.name}.0.h\
"\n"
185 for l
in vis
.decl_lines
do
189 for l
in vis
.lines
do
194 if file
!= null then file
.close
197 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
199 # Generate the Makefile
201 var makename
= "{mainmodule.name}.mk"
202 var makepath
= "{compile_dir}/{makename}"
203 var makefile
= new OFStream.open
(makepath
)
207 p
= orig_dir
.join_path
(p
).simplify_path
208 cc_includes
+= " -I \"" + p + "\
""
210 if toolcontext
.opt_no_stacktrace
.value
then
211 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc\n\n")
213 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lunwind -lm -lgc\n\n")
215 makefile
.write
("all: {outpath}\n\n")
217 var ofiles
= new Array[String]
218 # Compile each generated file
220 var o
= f
.strip_extension
(".c") + ".o"
221 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -D NONITCNI -c -o {o} {f}\n\n")
225 # Add gc_choser.h to aditionnal bodies
226 var gc_chooser
= new ExternCFile("{cc_paths.first}/gc_chooser.c", "-DWITH_LIBGC")
227 compiler
.extern_bodies
.add
(gc_chooser
)
229 # Compile each required extern body into a specific .o
230 for f
in compiler
.extern_bodies
do
231 var basename
= f
.filename
.basename
(".c")
232 var o
= "{basename}.extern.o"
233 var ff
= orig_dir
.join_path
(f
.filename
).simplify_path
234 makefile
.write
("{o}: {ff}\n\t$(CC) $(CFLAGS) -D NONITCNI {f.cflags} -c -o {o} {ff}\n\n")
239 makefile
.write
("{outpath}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
241 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
243 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
246 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
248 # Execute the Makefile
250 if self.toolcontext
.opt_no_cc
.value
then return
253 self.toolcontext
.info
("*** COMPILING C ***", 1)
254 var makeflags
= self.toolcontext
.opt_make_flags
.value
255 if makeflags
== null then makeflags
= ""
256 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
259 if self.toolcontext
.verbose_level
>= 3 then
260 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
262 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
265 toolcontext
.error
(null, "make failed! Error code: {res}.")
269 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
273 # Singleton that store the knowledge about the compilation process
274 abstract class AbstractCompiler
275 type VISITOR: AbstractCompilerVisitor
277 # Table corresponding c_names to nit names (methods)
278 var names
= new HashMap[String, String]
280 # The main module of the program currently compiled
281 # Is assigned during the separate compilation
282 var mainmodule
: MModule writable
284 # The real main module of the program
285 var realmainmodule
: MModule
287 # The modeulbuilder used to know the model and the AST
288 var modelbuilder
: ModelBuilder protected writable
290 # Is hardening asked? (see --hardening)
291 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
293 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
295 self.mainmodule
= mainmodule
296 self.realmainmodule
= mainmodule
297 self.modelbuilder
= modelbuilder
300 # Force the creation of a new file
301 # The point is to avoid contamination between must-be-compiled-separately files
302 fun new_file
(name
: String): CodeFile
304 var f
= new CodeFile(name
)
309 # The list of all associated files
310 # Used to generate .c files
311 var files
: List[CodeFile] = new List[CodeFile]
313 # Initialize a visitor specific for a compiler engine
314 fun new_visitor
: VISITOR is abstract
316 # Where global declaration are stored (the main .h)
317 var header
: CodeWriter writable
319 # Provide a declaration that can be requested (before or latter) by a visitor
320 fun provide_declaration
(key
: String, s
: String)
322 if self.provided_declarations
.has_key
(key
) then
323 assert self.provided_declarations
[key
] == s
325 self.provided_declarations
[key
] = s
328 private var provided_declarations
= new HashMap[String, String]
330 # Builds the .c and .h files to be used when generating a Stack Trace
331 # Binds the generated C function names to Nit function names
332 fun build_c_to_nit_bindings
334 var compile_dir
= modelbuilder
.toolcontext
.opt_compile_dir
.value
335 if compile_dir
== null then compile_dir
= ".nit_compile"
337 var stream
= new OFStream.open
("{compile_dir}/C_fun_names")
338 stream
.write
("%\{\n#include \"c_functions_hash.h\"\n%\}\n")
339 stream
.write
("%define lookup-function-name get_nit_name\n")
340 stream
.write
("struct C_Nit_Names;\n")
342 stream
.write
("####\n")
343 for i
in names
.keys
do
345 stream
.write
(",\t\"")
346 stream.write(names[i])
349 stream
.write
("####\n")
353 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
354 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
355 stream
.write
("const struct C_Nit_Names* get_nit_name(register const char *str, register unsigned int len);\n")
358 var x
= new Process("gperf","{compile_dir}/C_fun_names","-t","-7","--output-file={compile_dir}/c_functions_hash.c","-C")
361 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
365 # This method call compile_header_strucs method that has to be refined
366 fun compile_header
do
368 var toolctx
= modelbuilder
.toolcontext
369 self.header
.add_decl
("#include <stdlib.h>")
370 self.header
.add_decl
("#include <stdio.h>")
371 self.header
.add_decl
("#include <string.h>")
372 self.header
.add_decl
("#include <gc_chooser.h>")
374 compile_header_structs
376 # Signal handler function prototype
377 self.header
.add_decl
("void show_backtrace(int);")
379 # Global variable used by the legacy native interface
380 self.header
.add_decl
("extern int glob_argc;")
381 self.header
.add_decl
("extern char **glob_argv;")
382 self.header
.add_decl
("extern val *glob_sys;")
385 # Declaration of structures the live Nit types
386 protected fun compile_header_structs
is abstract
388 # Generate the main C function.
390 # * allocate the Sys object if it exists
391 # * call init if is exists
392 # * call main if it exists
393 fun compile_main_function
395 var v
= self.new_visitor
396 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
397 v
.add_decl
("#include \"c_functions_hash
.h\
"")
399 v
.add_decl
("#include <signal.h>")
400 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
401 v
.add_decl
("#define UNW_LOCAL_ONLY")
402 v
.add_decl
("#include <libunwind.h>")
404 v
.add_decl
("int glob_argc;")
405 v
.add_decl
("char **glob_argv;")
406 v
.add_decl
("val *glob_sys;")
408 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
409 for tag
in count_type_test_tags
do
410 v
.add_decl
("long count_type_test_resolved_{tag};")
411 v
.add_decl
("long count_type_test_unresolved_{tag};")
412 v
.add_decl
("long count_type_test_skipped_{tag};")
413 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
414 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
415 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
419 v
.add_decl
("void show_backtrace (int signo) \{")
420 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
421 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
422 v
.add_decl
("unw_cursor_t cursor;")
423 v
.add_decl
("if(opt==NULL)\{")
424 v
.add_decl
("unw_context_t uc;")
425 v
.add_decl
("unw_word_t ip;")
426 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
427 v
.add_decl
("unw_getcontext(&uc);")
428 v
.add_decl
("unw_init_local(&cursor, &uc);")
429 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
430 v
.add_decl
("printf(\"-- Stack Trace ------------------------------\\n\
");")
431 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
432 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
433 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
434 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
435 v
.add_decl
(" const C_Nit_Names* recv = get_nit_name(procname, strlen(procname));")
436 v
.add_decl
(" if (recv != 0)\{")
437 v
.add_decl
(" printf(\"` %s\\n\", recv->nit_name);")
438 v.add_decl(" \}else\{")
439 v.add_decl(" printf(\"` %s\\n\
", procname);")
442 v
.add_decl
(" printf(\"` %s \\n\",procname);")
445 v.add_decl("printf(\"-------------------------------------------------\\n\");")
446 v.add_decl("free(procname);")
449 v.add_decl("exit(signo);")
452 v.add_decl("int main(int argc, char** argv) \{")
454 v.add("signal(SIGABRT, show_backtrace);")
455 v.add("signal(SIGFPE, show_backtrace);")
456 v.add("signal(SIGILL, show_backtrace);")
457 v.add("signal(SIGINT, show_backtrace);")
458 v.add("signal(SIGTERM, show_backtrace);")
459 v.add("signal(SIGSEGV, show_backtrace);")
461 v.add("glob_argc = argc; glob_argv = argv;")
462 v.add("initialize_gc_option();")
463 var main_type = mainmodule.sys_type
464 if main_type != null then
465 var mainmodule = v.compiler.mainmodule
466 var glob_sys = v.init_instance(main_type)
467 v.add("glob_sys = {glob_sys};")
468 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
469 if main_init != null then
470 v.send(main_init, [glob_sys])
472 var main_method = mainmodule.try_get_primitive_method("main", main_type.mclass)
473 if main_method != null then
474 v.send(main_method, [glob_sys])
478 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
479 v.add_decl("long count_type_test_resolved_total = 0;")
480 v.add_decl("long count_type_test_unresolved_total = 0;")
481 v.add_decl("long count_type_test_skipped_total = 0;")
482 v.add_decl("long count_type_test_total_total = 0;")
483 for tag in count_type_test_tags do
484 v.add_decl("long count_type_test_total_{tag};")
485 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
486 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
487 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
488 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
489 v.add("count_type_test_total_total += count_type_test_total_{tag};")
491 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
492 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
493 var tags = count_type_test_tags.to_a
496 v.add("printf(\"{tag}\");")
497 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
498 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
499 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
500 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
508 # List of additional .c files required to compile (native interface)
509 var extern_bodies = new Array[ExternCFile]
511 # List of source files to copy over to the compile dir
512 var files_to_copy = new Array[String]
514 # This is used to avoid adding an extern file more than once
515 private var seen_extern = new ArraySet[String]
517 # Generate code that initialize the attributes on a new instance
518 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
520 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
521 self.mainmodule.linearize_mclassdefs(cds)
523 var n = self.modelbuilder.mclassdef2nclassdef[cd]
524 for npropdef in n.n_propdefs do
525 if npropdef isa AAttrPropdef then
526 npropdef.init_expr(v, recv)
532 # Generate code that check if an attribute is correctly initialized
533 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
535 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
536 self.mainmodule.linearize_mclassdefs(cds)
538 var n = self.modelbuilder.mclassdef2nclassdef[cd]
539 for npropdef in n.n_propdefs do
540 if npropdef isa AAttrPropdef then
541 npropdef.check_expr(v, recv)
549 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
550 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
551 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
552 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
554 protected fun init_count_type_test_tags: HashMap[String, Int]
556 var res = new HashMap[String, Int]
557 for tag in count_type_test_tags do
563 # Display stats about compilation process
565 # * type tests against resolved types (`x
isa Collection[Animal]`)
566 # * type tests against unresolved types (`x
isa Collection[E
]`)
567 # * type tests skipped
572 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
573 print "# static count_type_test"
574 print "\tresolved:\tunresolved\tskipped\ttotal"
575 var count_type_test_total = init_count_type_test_tags
576 count_type_test_resolved["total"] = 0
577 count_type_test_unresolved["total"] = 0
578 count_type_test_skipped["total"] = 0
579 count_type_test_total["total"] = 0
580 for tag in count_type_test_tags do
581 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
582 count_type_test_resolved["total"] += count_type_test_resolved[tag]
583 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
584 count_type_test_skipped["total"] += count_type_test_skipped[tag]
585 count_type_test_total["total"] += count_type_test_total[tag]
587 var count_type_test = count_type_test_total["total"]
588 var tags = count_type_test_tags.to_a
592 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
593 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
594 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
595 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
602 # Avoid division by zero by returning the string "n/a"
603 fun div(a,b:Int):String
605 if b == 0 then return "n/a"
606 return ((a*10000/b).to_f / 100.0).to_precision(2)
610 # A file unit (may be more than one file if
611 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
614 var writers = new Array[CodeWriter]
615 var required_declarations = new HashSet[String]
618 # Where to store generated lines
621 var lines: List[String] = new List[String]
622 var decl_lines: List[String] = new List[String]
624 # Add a line in the main part of the generated C
625 fun add(s: String) do self.lines.add(s)
628 # (used for local or global declaration)
629 fun add_decl(s: String) do self.decl_lines.add(s)
634 file.writers.add(self)
638 # A visitor on the AST of property definition that generate the C code.
639 abstract class AbstractCompilerVisitor
641 type COMPILER: AbstractCompiler
643 # The associated compiler
644 var compiler: COMPILER
646 # The current visited AST node
647 var current_node: nullable ANode writable = null
649 # The current `Frame`
650 var frame: nullable Frame writable
652 # Alias for self.compiler.mainmodule.object_type
653 fun object_type: MClassType do return self.compiler.mainmodule.object_type
655 # Alias for self.compiler.mainmodule.bool_type
656 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
658 var writer: CodeWriter
660 init(compiler: COMPILER)
662 self.compiler = compiler
663 self.writer = new CodeWriter(compiler.files.last)
666 # Force to get the primitive class named `name
` or abort
667 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
669 # Force to get the primitive property named `name
` in the instance `recv
` or abort
670 fun get_property(name: String, recv: MType): MMethod
672 assert recv isa MClassType
673 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node.as(not null), name, recv.mclass, self.compiler.mainmodule)
676 fun compile_callsite(callsite: CallSite, args: Array[RuntimeVariable]): nullable RuntimeVariable
678 return self.send(callsite.mproperty, args)
681 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
683 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
685 # Transform varargs, in raw arguments, into a single argument of type `Array`
686 # Note: this method modify the given `args
`
687 # If there is no vararg, then `args
` is not modified.
688 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
690 var recv = args.first
691 var vararg_rank = msignature.vararg_rank
692 if vararg_rank >= 0 then
693 assert args.length >= msignature.arity + 1 # because of self
695 args = new Array[RuntimeVariable]
697 args.add(rawargs.first) # recv
699 for i in [0..vararg_rank[ do
700 args.add(rawargs[i+1])
703 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
704 var vararg = new Array[RuntimeVariable]
705 for i in [vararg_rank..vararg_lastrank] do
706 vararg.add(rawargs[i+1])
709 var elttype = msignature.mparameters[vararg_rank].mtype
710 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
712 for i in [vararg_lastrank+1..rawargs.length-1[ do
713 args.add(rawargs[i+1])
716 rawargs.add_all(args)
722 # Anchor a type to the main module and the current receiver
723 fun anchor(mtype: MType): MType
725 if not mtype.need_anchor then return mtype
726 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
729 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
731 if not mtype.need_anchor then return mtype
732 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
735 # Unsafely cast a value to a new type
736 # ie the result share the same C variable but my have a different mcasttype
737 # NOTE: if the adaptation is useless then `value
` is returned as it.
738 # ENSURE: `result
.name
== value
.name
`
739 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
741 mtype = self.anchor(mtype)
742 var valmtype = value.mcasttype
743 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
747 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
748 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
751 var res = new RuntimeVariable(value.name, valmtype, mtype)
756 # Generate a super call from a method definition
757 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
759 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
761 # Box or unbox a value to another type iff a C type conversion is needed
762 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
763 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
765 # Generate a polymorphic subtype test
766 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
768 # Generate the code required to dynamically check if 2 objects share the same runtime type
769 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
771 # Generate a Nit "is" for two runtime_variables
772 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
776 # Generate a static call on a method definition
777 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
779 # Generate a polymorphic send for the method `m
` and the arguments `args
`
780 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
782 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
783 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
785 assert t isa MClassType
786 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
787 return self.call(propdef, t, args)
790 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
791 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
793 assert t isa MClassType
794 m = m.lookup_next_definition(self.compiler.mainmodule, t)
795 return self.call(m, t, args)
798 # Attributes handling
800 # Generate a polymorphic attribute is_set test
801 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
803 # Generate a polymorphic attribute read
804 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
806 # Generate a polymorphic attribute write
807 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
811 # Add a check and an abort for a null reciever if needed
812 fun check_recv_notnull(recv: RuntimeVariable)
814 if self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then return
816 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
818 self.add("if ({recv} == NULL) \{")
819 self.add_abort("Reciever is null")
826 private var names: HashSet[String] = new HashSet[String]
827 private var last: Int = 0
829 # Return a new name based on `s
` and unique in the visitor
830 fun get_name(s: String): String
832 if not self.names.has(s) then
836 var i = self.last + 1
839 if not self.names.has(s2) then
848 # Return an unique and stable identifier associated with an escapemark
849 fun escapemark_name(e: nullable EscapeMark): String
852 if escapemark_names.has_key(e) then return escapemark_names[e]
854 if name == null then name = "label"
855 name = get_name(name)
856 escapemark_names[e] = name
860 private var escapemark_names = new HashMap[EscapeMark, String]
862 # Return a "const char*" variable associated to the classname of the dynamic type of an object
863 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
864 fun class_name_string(value: RuntimeVariable): String is abstract
868 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
870 # Return the local runtime_variable associated to a Nit local variable
871 fun variable(variable: Variable): RuntimeVariable
873 if self.variables.has_key(variable) then
874 return self.variables[variable]
876 var name = self.get_name("var_{variable.name}")
877 var mtype = variable.declared_type.as(not null)
878 mtype = self.anchor(mtype)
879 var res = new RuntimeVariable(name, mtype, mtype)
880 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
881 self.variables[variable] = res
886 # Return a new uninitialized local runtime_variable
887 fun new_var(mtype: MType): RuntimeVariable
889 mtype = self.anchor(mtype)
890 var name = self.get_name("var")
891 var res = new RuntimeVariable(name, mtype, mtype)
892 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
896 # Return a new uninitialized named runtime_variable
897 fun new_named_var(mtype: MType, name: String): RuntimeVariable
899 mtype = self.anchor(mtype)
900 var res = new RuntimeVariable(name, mtype, mtype)
901 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
905 # Correctly assign a left and a right value
906 # Boxing and unboxing is performed if required
907 fun assign(left, right: RuntimeVariable)
909 right = self.autobox(right, left.mtype)
910 self.add("{left} = {right};")
915 # Generate a alloc-instance + init-attributes
916 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
918 # Generate an integer value
919 fun int_instance(value: Int): RuntimeVariable
921 var res = self.new_var(self.get_class("Int").mclass_type)
922 self.add("{res} = {value};")
926 # Generate a string value
927 fun string_instance(string: String): RuntimeVariable
929 var mtype = self.get_class("String").mclass_type
930 var name = self.get_name("varonce")
931 self.add_decl("static {mtype.ctype} {name};")
932 var res = self.new_var(mtype)
933 self.add("if ({name}) \{")
934 self.add("{res} = {name};")
935 self.add("\} else \{")
936 var native_mtype = self.get_class("NativeString").mclass_type
937 var nat = self.new_var(native_mtype)
938 self.add("{nat} = \"{string.escape_to_c}\";")
939 var length = self.int_instance(string.length)
940 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
941 self.add("{name} = {res};")
946 # Generate an array value
947 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
949 # Get an instance of a array for a vararg
950 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
954 # Add a line in the main part of the generated C
955 fun add(s: String) do self.writer.lines.add(s)
958 # (used for local or global declaration)
959 fun add_decl(s: String) do self.writer.decl_lines.add(s)
961 # Request the presence of a global declaration
962 fun require_declaration(key: String)
964 self.writer.file.required_declarations.add(key)
967 # Add a declaration in the local-header
968 # The declaration is ensured to be present once
969 fun declare_once(s: String)
971 self.compiler.provide_declaration(s, s)
972 self.require_declaration(s)
975 # look for a needed .h and .c file for a given .nit source-file
976 # FIXME: bad API, parameter should be a `MModule`, not its source-file
977 fun add_extern(file: String)
979 file = file.strip_extension(".nit")
980 var tryfile = file + ".nit.h"
981 if tryfile.file_exists then
982 self.declare_once("#include \"{"..".join_path(tryfile)}\"")
983 self.compiler.files_to_copy.add(tryfile)
985 tryfile = file + "_nit.h"
986 if tryfile.file_exists then
987 self.declare_once("#include \"{"..".join_path(tryfile)}\"")
988 self.compiler.files_to_copy.add(tryfile)
991 if self.compiler.seen_extern.has(file) then return
992 self.compiler.seen_extern.add(file)
993 tryfile = file + ".nit.c"
994 if not tryfile.file_exists then
995 tryfile = file + "_nit.c"
996 if not tryfile.file_exists then return
998 var f = new ExternCFile(tryfile, "")
999 self.compiler.extern_bodies.add(f)
1000 self.compiler.files_to_copy.add(tryfile)
1003 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1004 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1006 var res = new_var(mtype)
1007 self.add("{res} = {cexpr};")
1011 # Generate generic abort
1012 # used by aborts, asserts, casts, etc.
1013 fun add_abort(message: String)
1015 self.add("fprintf(stderr, \"Runtime error: %s\", \"{message.escape_to_c}\");")
1021 if self.current_node != null and self.current_node.location.file != null then
1022 self.add("fprintf(stderr, \" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1024 self.add("fprintf(stderr, \"\\n\");")
1026 self.add("show_backtrace(1);")
1029 # Add a dynamic cast
1030 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1032 var res = self.type_test(value, mtype, tag)
1033 self.add("if (!{res}) \{")
1034 var cn = self.class_name_string(value)
1035 self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1040 # Generate a return with the value `s
`
1041 fun ret(s: RuntimeVariable)
1043 self.assign(self.frame.returnvar.as(not null), s)
1044 self.add("goto {self.frame.returnlabel.as(not null)};")
1047 # Compile a statement (if any)
1048 fun stmt(nexpr: nullable AExpr)
1050 if nexpr == null then return
1051 var old = self.current_node
1052 self.current_node = nexpr
1054 self.current_node = old
1057 # Compile an expression an return its result
1058 # `mtype
` is the expected return type, pass null if no specific type is expected.
1059 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1061 var old = self.current_node
1062 self.current_node = nexpr
1063 var res = nexpr.expr(self).as(not null)
1064 if mtype != null then
1065 mtype = self.anchor(mtype)
1066 res = self.autobox(res, mtype)
1068 res = autoadapt(res, nexpr.mtype.as(not null))
1069 var implicit_cast_to = nexpr.implicit_cast_to
1070 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1071 add_cast(res, implicit_cast_to, "auto")
1072 res = autoadapt(res, implicit_cast_to)
1074 self.current_node = old
1078 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1079 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1081 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1082 fun debug(message: String)
1084 var node = self.current_node
1085 if node == null then
1086 print "?: {message}"
1090 self.add("/* DEBUG: {message} */")
1094 # A C function associated to a Nit method
1095 # Because of customization, a given Nit method can be compiler more that once
1096 abstract class AbstractRuntimeFunction
1098 type COMPILER: AbstractCompiler
1099 type VISITOR: AbstractCompilerVisitor
1101 # The associated Nit method
1102 var mmethoddef: MMethodDef
1104 # The mangled c name of the runtime_function
1105 # Subclasses should redefine `build_c_name
` instead
1108 var res = self.c_name_cache
1109 if res != null then return res
1110 res = self.build_c_name
1111 self.c_name_cache = res
1115 # Non cached version of `c_name
`
1116 protected fun build_c_name: String is abstract
1118 protected var c_name_cache: nullable String writable = null
1120 # Implements a call of the runtime_function
1121 # May inline the body or generate a C function call
1122 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1124 # Generate the code for the `AbstractRuntimeFunction`
1125 # Warning: compile more than once compilation makes CC unhappy
1126 fun compile_to_c(compiler: COMPILER) is abstract
1129 # A runtime variable hold a runtime value in C.
1130 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1132 # The tricky point is that a single C variable can be associated to more than one `RuntimeVariable` because the static knowledge of the type of an expression can vary in the C code.
1133 class RuntimeVariable
1134 # The name of the variable in the C code
1137 # The static type of the variable (as declard in C)
1140 # The current casted type of the variable (as known in Nit)
1141 var mcasttype: MType writable
1143 # If the variable exaclty a mcasttype?
1144 # false (usual value) means that the variable is a mcasttype or a subtype.
1145 var is_exact: Bool writable = false
1147 init(name: String, mtype: MType, mcasttype: MType)
1151 self.mcasttype = mcasttype
1152 assert not mtype.need_anchor
1153 assert not mcasttype.need_anchor
1156 redef fun to_s do return name
1161 if self.is_exact then
1162 exact_str = " exact"
1167 if self.mtype == self.mcasttype then
1168 type_str = "{mtype}{exact_str}"
1170 type_str = "{mtype}({mcasttype}{exact_str})"
1172 return "<{name}:{type_str}>"
1176 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1179 type VISITOR: AbstractCompilerVisitor
1181 # The associated visitor
1182 var visitor: VISITOR
1184 # The executed property.
1185 # A Method in case of a call, an attribute in case of a default initialization.
1186 var mpropdef: MPropDef
1188 # The static type of the receiver
1189 var receiver: MClassType
1191 # Arguments of the method (the first is the receiver)
1192 var arguments: Array[RuntimeVariable]
1194 # The runtime_variable associated to the return (in a function)
1195 var returnvar: nullable RuntimeVariable writable = null
1197 # The label at the end of the property
1198 var returnlabel: nullable String writable = null
1201 # An extern C file to compile
1203 # The filename of the file
1204 var filename: String
1205 # Additionnal specific CC compiler -c flags
1210 # Return the C type associated to a given Nit static type
1211 fun ctype: String do return "val*"
1213 fun ctypename: String do return "val"
1215 # Return the name of the C structure associated to a Nit live type
1216 fun c_name: String is abstract
1217 protected var c_name_cache: nullable String protected writable
1220 redef class MClassType
1223 var res = self.c_name_cache
1224 if res != null then return res
1225 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1226 self.c_name_cache = res
1230 redef fun ctype: String
1232 if mclass.name == "Int" then
1234 else if mclass.name == "Bool" then
1236 else if mclass.name == "Char" then
1238 else if mclass.name == "Float" then
1240 else if mclass.name == "NativeString" then
1242 else if mclass.name == "NativeArray" then
1244 else if mclass.kind == extern_kind then
1251 redef fun ctypename: String
1253 if mclass.name == "Int" then
1255 else if mclass.name == "Bool" then
1257 else if mclass.name == "Char" then
1259 else if mclass.name == "Float" then
1261 else if mclass.name == "NativeString" then
1263 else if mclass.name == "NativeArray" then
1264 #return "{self.arguments.first.ctype}*"
1266 else if mclass.kind == extern_kind then
1274 redef class MGenericType
1277 var res = self.c_name_cache
1278 if res != null then return res
1280 for t in self.arguments do
1281 res = res + t.c_name
1283 self.c_name_cache = res
1288 redef class MParameterType
1291 var res = self.c_name_cache
1292 if res != null then return res
1293 res = "{self.mclass.c_name}_FT{self.rank}"
1294 self.c_name_cache = res
1299 redef class MVirtualType
1302 var res = self.c_name_cache
1303 if res != null then return res
1304 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1305 self.c_name_cache = res
1310 redef class MNullableType
1313 var res = self.c_name_cache
1314 if res != null then return res
1315 res = "nullable_{self.mtype.c_name}"
1316 self.c_name_cache = res
1322 # Return the name of the C structure associated to a Nit class
1323 fun c_name: String do
1324 var res = self.c_name_cache
1325 if res != null then return res
1326 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1327 self.c_name_cache = res
1330 private var c_name_cache: nullable String
1333 redef class MProperty
1334 fun c_name: String do
1335 var res = self.c_name_cache
1336 if res != null then return res
1337 res = "{self.intro.c_name}"
1338 self.c_name_cache = res
1341 private var c_name_cache: nullable String
1344 redef class MPropDef
1345 type VISITOR: AbstractCompilerVisitor
1347 private var c_name_cache: nullable String
1349 # The mangled name associated to the property
1352 var res = self.c_name_cache
1353 if res != null then return res
1354 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1355 self.c_name_cache = res
1360 redef class MMethodDef
1361 # Can the body be inlined?
1362 fun can_inline(v: VISITOR): Bool
1364 var modelbuilder = v.compiler.modelbuilder
1365 if modelbuilder.mpropdef2npropdef.has_key(self) then
1366 var npropdef = modelbuilder.mpropdef2npropdef[self]
1367 return npropdef.can_inline
1368 else if self.mproperty.name == "init" then
1369 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1376 # Inline the body in another visitor
1377 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1379 var modelbuilder = v.compiler.modelbuilder
1380 if modelbuilder.mpropdef2npropdef.has_key(self) then
1381 var npropdef = modelbuilder.mpropdef2npropdef[self]
1382 var oldnode = v.current_node
1383 v.current_node = npropdef
1384 self.compile_parameter_check(v, arguments)
1385 npropdef.compile_to_c(v, self, arguments)
1386 v.current_node = oldnode
1387 else if self.mproperty.name == "init" then
1388 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1389 var oldnode = v.current_node
1390 v.current_node = nclassdef
1391 self.compile_parameter_check(v, arguments)
1392 nclassdef.compile_to_c(v, self, arguments)
1393 v.current_node = oldnode
1400 # Generate type checks in the C code to check covariant parameters
1401 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1403 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1405 for i in [0..msignature.arity[ do
1406 # skip test for vararg since the array is instantiated with the correct polymorphic type
1407 if msignature.vararg_rank == i then continue
1409 # skip if the cast is not required
1410 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1411 if not origmtype.need_anchor then continue
1413 # get the parameter type
1414 var mtype = self.msignature.mparameters[i].mtype
1417 # note that v decides if and how to implements the cast
1418 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1419 v.add_cast(arguments[i+1], mtype, "covariance")
1426 redef class APropdef
1427 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1429 v.add("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1430 debug("Not yet implemented")
1433 fun can_inline: Bool do return true
1436 redef class AConcreteMethPropdef
1437 redef fun compile_to_c(v, mpropdef, arguments)
1439 for i in [0..mpropdef.msignature.arity[ do
1440 var variable = self.n_signature.n_params[i].variable.as(not null)
1441 v.assign(v.variable(variable), arguments[i+1])
1443 # Call the implicit super-init
1444 var auto_super_inits = self.auto_super_inits
1445 if auto_super_inits != null then
1446 var selfarg = [arguments.first]
1447 for auto_super_init in auto_super_inits do
1448 if auto_super_init.intro.msignature.arity == 0 then
1449 v.send(auto_super_init, selfarg)
1451 v.send(auto_super_init, arguments)
1455 v.stmt(self.n_block)
1458 redef fun can_inline
1460 if self.auto_super_inits != null then return false
1461 var nblock = self.n_block
1462 if nblock == null then return true
1463 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1464 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1469 redef class AInternMethPropdef
1470 redef fun compile_to_c(v, mpropdef, arguments)
1472 var pname = mpropdef.mproperty.name
1473 var cname = mpropdef.mclassdef.mclass.name
1474 var ret = mpropdef.msignature.return_mtype
1476 ret = v.resolve_for(ret, arguments.first)
1478 if pname != "==" and pname != "!=" then
1479 v.adapt_signature(mpropdef, arguments)
1481 if cname == "Int" then
1482 if pname == "output" then
1483 v.add("printf(\"%ld\\n\", {arguments.first});")
1485 else if pname == "object_id" then
1486 v.ret(arguments.first)
1488 else if pname == "+" then
1489 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1491 else if pname == "-" then
1492 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1494 else if pname == "unary -" then
1495 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1497 else if pname == "succ" then
1498 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1500 else if pname == "prec" then
1501 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1503 else if pname == "*" then
1504 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1506 else if pname == "/" then
1507 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1509 else if pname == "%" then
1510 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
1512 else if pname == "lshift" then
1513 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1515 else if pname == "rshift" then
1516 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1518 else if pname == "==" then
1519 v.ret(v.equal_test(arguments[0], arguments[1]))
1521 else if pname == "!=" then
1522 var res = v.equal_test(arguments[0], arguments[1])
1523 v.ret(v.new_expr("!{res}", ret.as(not null)))
1525 else if pname == "<" then
1526 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1528 else if pname == ">" then
1529 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1531 else if pname == "<=" then
1532 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1534 else if pname == ">=" then
1535 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1537 else if pname == "to_f" then
1538 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
1540 else if pname == "ascii" then
1541 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1544 else if cname == "Char" then
1545 if pname == "output" then
1546 v.add("printf(\"%c\", {arguments.first});")
1548 else if pname == "object_id" then
1549 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1551 else if pname == "+" then
1552 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1554 else if pname == "-" then
1555 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1557 else if pname == "==" then
1558 v.ret(v.equal_test(arguments[0], arguments[1]))
1560 else if pname == "!=" then
1561 var res = v.equal_test(arguments[0], arguments[1])
1562 v.ret(v.new_expr("!{res}", ret.as(not null)))
1564 else if pname == "succ" then
1565 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1567 else if pname == "prec" then
1568 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1570 else if pname == "<" then
1571 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1573 else if pname == ">" then
1574 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1576 else if pname == "<=" then
1577 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1579 else if pname == ">=" then
1580 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1582 else if pname == "to_i" then
1583 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
1585 else if pname == "ascii" then
1586 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
1589 else if cname == "Bool" then
1590 if pname == "output" then
1591 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
1593 else if pname == "object_id" then
1594 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1596 else if pname == "==" then
1597 v.ret(v.equal_test(arguments[0], arguments[1]))
1599 else if pname == "!=" then
1600 var res = v.equal_test(arguments[0], arguments[1])
1601 v.ret(v.new_expr("!{res}", ret.as(not null)))
1604 else if cname == "Float" then
1605 if pname == "output" then
1606 v.add("printf(\"%f\\n\", {arguments.first});")
1608 else if pname == "object_id" then
1609 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
1611 else if pname == "+" then
1612 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1614 else if pname == "-" then
1615 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1617 else if pname == "unary -" then
1618 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1620 else if pname == "succ" then
1621 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1623 else if pname == "prec" then
1624 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1626 else if pname == "*" then
1627 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1629 else if pname == "/" then
1630 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1632 else if pname == "==" then
1633 v.ret(v.equal_test(arguments[0], arguments[1]))
1635 else if pname == "!=" then
1636 var res = v.equal_test(arguments[0], arguments[1])
1637 v.ret(v.new_expr("!{res}", ret.as(not null)))
1639 else if pname == "<" then
1640 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1642 else if pname == ">" then
1643 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1645 else if pname == "<=" then
1646 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1648 else if pname == ">=" then
1649 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1651 else if pname == "to_i" then
1652 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
1655 else if cname == "NativeString" then
1656 if pname == "[]" then
1657 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
1659 else if pname == "[]=" then
1660 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1662 else if pname == "copy_to" then
1663 v.add("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1665 else if pname == "atoi" then
1666 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
1669 else if cname == "NativeArray" then
1670 v.native_array_def(pname, ret, arguments)
1673 if pname == "exit" then
1674 v.add("exit({arguments[1]});")
1676 else if pname == "sys" then
1677 v.ret(v.new_expr("glob_sys", ret.as(not null)))
1679 else if pname == "calloc_string" then
1680 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
1682 else if pname == "calloc_array" then
1683 v.calloc_array(ret.as(not null), arguments)
1685 else if pname == "object_id" then
1686 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1688 else if pname == "is_same_type" then
1689 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
1691 else if pname == "is_same_instance" then
1692 v.ret(v.equal_test(arguments[0], arguments[1]))
1694 else if pname == "output_class_name" then
1695 var nat = v.class_name_string(arguments.first)
1696 v.add("printf(\"%s\\n\", {nat});")
1698 else if pname == "native_class_name" then
1699 var nat = v.class_name_string(arguments.first)
1700 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
1702 else if pname == "force_garbage_collection" then
1703 v.add("nit_gcollect();")
1705 else if pname == "native_argc" then
1706 v.ret(v.new_expr("glob_argc", ret.as(not null)))
1708 else if pname == "native_argv" then
1709 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
1712 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
1713 debug("Not implemented {mpropdef}")
1717 redef class AExternMethPropdef
1718 redef fun compile_to_c(v, mpropdef, arguments)
1721 var nextern = self.n_extern
1722 if nextern == null then
1723 v.add("fprintf(stderr, \"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1724 v.add("show_backtrace(1);")
1727 externname = nextern.text.substring(1, nextern.text.length-2)
1728 if location.file != null then
1729 var file = location.file.filename
1732 var res: nullable RuntimeVariable = null
1733 var ret = mpropdef.msignature.return_mtype
1735 ret = v.resolve_for(ret, arguments.first)
1736 res = v.new_var(ret)
1738 v.adapt_signature(mpropdef, arguments)
1741 v.add("{externname}({arguments.join(", ")});")
1743 v.add("{res} = {externname}({arguments.join(", ")});")
1749 redef class AExternInitPropdef
1750 redef fun compile_to_c(v, mpropdef, arguments)
1753 var nextern = self.n_extern
1754 if nextern == null then
1755 v.add("printf(\"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1756 v.add("show_backtrace(1);")
1759 externname = nextern.text.substring(1, nextern.text.length-2)
1760 if location.file != null then
1761 var file = location.file.filename
1764 v.adapt_signature(mpropdef, arguments)
1765 var ret = arguments.first.mtype
1766 var res = v.new_var(ret)
1770 v.add("{res} = {externname}({arguments.join(", ")});")
1775 redef class AAttrPropdef
1776 redef fun compile_to_c(v, mpropdef, arguments)
1778 if arguments.length == 1 then
1779 var res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
1780 v.assign(v.frame.returnvar.as(not null), res)
1782 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
1786 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1788 var nexpr = self.n_expr
1789 if nexpr != null then
1790 var oldnode = v.current_node
1791 v.current_node = self
1792 var old_frame = v.frame
1793 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1795 var value = v.expr(nexpr, self.mpropdef.static_mtype)
1796 v.write_attribute(self.mpropdef.mproperty, recv, value)
1798 v.current_node = oldnode
1802 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1804 var nexpr = self.n_expr
1805 if nexpr != null then return
1807 var oldnode = v.current_node
1808 v.current_node = self
1809 var old_frame = v.frame
1810 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1812 # Force read to check the initialization
1813 v.read_attribute(self.mpropdef.mproperty, recv)
1815 v.current_node = oldnode
1819 redef class AClassdef
1820 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1822 if mpropdef == self.mfree_init then
1823 var super_inits = self.super_inits
1824 if super_inits != null then
1825 assert arguments.length == 1
1826 for su in super_inits do
1827 v.send(su, arguments)
1831 var recv = arguments.first
1833 # Collect undefined attributes
1834 for npropdef in self.n_propdefs do
1835 if npropdef isa AAttrPropdef and npropdef.n_expr == null then
1836 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
1846 redef class ADeferredMethPropdef
1847 redef fun compile_to_c(v, mpropdef, arguments) do
1848 var cn = v.class_name_string(arguments.first)
1849 v.add("fprintf(stderr, \"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1852 redef fun can_inline do return true
1856 # Try to compile self as an expression
1857 # Do not call this method directly, use `v
.expr
` instead
1858 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
1860 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
1861 var mtype = self.mtype
1862 if mtype == null then
1865 var res = v.new_var(mtype)
1866 v.add("/* {res} = NOT YET {class_name} */")
1871 # Try to compile self as a statement
1872 # Do not call this method directly, use `v
.stmt
` instead
1873 private fun stmt(v: AbstractCompilerVisitor)
1876 if res != null then v.add("{res};")
1880 redef class ABlockExpr
1883 for e in self.n_expr do v.stmt(e)
1887 var last = self.n_expr.last
1888 for e in self.n_expr do
1889 if e == last then break
1892 return v.expr(last, null)
1896 redef class AVardeclExpr
1899 var variable = self.variable.as(not null)
1900 var ne = self.n_expr
1902 var i = v.expr(ne, variable.declared_type)
1903 v.assign(v.variable(variable), i)
1908 redef class AVarExpr
1911 var res = v.variable(self.variable.as(not null))
1912 var mtype = self.mtype.as(not null)
1913 return v.autoadapt(res, mtype)
1917 redef class AVarAssignExpr
1920 var variable = self.variable.as(not null)
1921 var i = v.expr(self.n_value, variable.declared_type)
1922 v.assign(v.variable(variable), i)
1926 var variable = self.variable.as(not null)
1927 var i = v.expr(self.n_value, variable.declared_type)
1928 v.assign(v.variable(variable), i)
1933 redef class AVarReassignExpr
1936 var variable = self.variable.as(not null)
1937 var vari = v.variable(variable)
1938 var value = v.expr(self.n_value, variable.declared_type)
1939 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
1941 v.assign(v.variable(variable), res)
1945 redef class ASelfExpr
1946 redef fun expr(v) do return v.frame.arguments.first
1949 redef class AContinueExpr
1950 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
1953 redef class ABreakExpr
1954 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
1957 redef class AReturnExpr
1960 var nexpr = self.n_expr
1961 if nexpr != null then
1962 var returnvar = v.frame.returnvar.as(not null)
1963 var i = v.expr(nexpr, returnvar.mtype)
1964 v.assign(returnvar, i)
1966 v.add("goto {v.frame.returnlabel.as(not null)};")
1970 redef class AAbortExpr
1971 redef fun stmt(v) do v.add_abort("Aborted")
1977 var cond = v.expr_bool(self.n_expr)
1978 v.add("if ({cond})\{")
1987 var res = v.new_var(self.mtype.as(not null))
1988 var cond = v.expr_bool(self.n_expr)
1989 v.add("if ({cond})\{")
1990 v.assign(res, v.expr(self.n_then.as(not null), null))
1992 v.assign(res, v.expr(self.n_else.as(not null), null))
1998 redef class AIfexprExpr
2001 var res = v.new_var(self.mtype.as(not null))
2002 var cond = v.expr_bool(self.n_expr)
2003 v.add("if ({cond})\{")
2004 v.assign(res, v.expr(self.n_then, null))
2006 v.assign(res, v.expr(self.n_else, null))
2015 v.stmt(self.n_block)
2016 var escapemark = self.escapemark
2017 if escapemark != null then
2018 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2023 redef class AWhileExpr
2027 var cond = v.expr_bool(self.n_expr)
2028 v.add("if (!{cond}) break;")
2029 v.stmt(self.n_block)
2030 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2032 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2036 redef class ALoopExpr
2040 v.stmt(self.n_block)
2041 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2043 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2047 redef class AForExpr
2050 # Shortcut on explicit range
2051 # Avoid the instantiation of the range and the iterator
2052 var nexpr = self.n_expr
2053 if self.variables.length == 1 and nexpr isa AOrangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2054 var from = v.expr(nexpr.n_expr, null)
2055 var to = v.expr(nexpr.n_expr2, null)
2056 var variable = v.variable(variables.first)
2058 v.assign(variable, from)
2059 v.add("for(;;) \{ /* shortcut range */")
2061 var ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2063 v.add("if(!{ok}) break;")
2065 v.stmt(self.n_block)
2067 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2068 var succ = v.send(v.get_property("succ", variable.mtype), [variable])
2070 v.assign(variable, succ)
2072 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2076 var cl = v.expr(self.n_expr, null)
2077 var it_meth = self.method_iterator
2078 assert it_meth != null
2079 var it = v.send(it_meth, [cl])
2082 var isok_meth = self.method_is_ok
2083 assert isok_meth != null
2084 var ok = v.send(isok_meth, [it])
2086 v.add("if(!{ok}) break;")
2087 if self.variables.length == 1 then
2088 var item_meth = self.method_item
2089 assert item_meth != null
2090 var i = v.send(item_meth, [it])
2092 v.assign(v.variable(variables.first), i)
2093 else if self.variables.length == 2 then
2094 var key_meth = self.method_key
2095 assert key_meth != null
2096 var i = v.send(key_meth, [it])
2098 v.assign(v.variable(variables[0]), i)
2099 var item_meth = self.method_item
2100 assert item_meth != null
2101 i = v.send(item_meth, [it])
2103 v.assign(v.variable(variables[1]), i)
2107 v.stmt(self.n_block)
2108 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2109 var next_meth = self.method_next
2110 assert next_meth != null
2111 v.send(next_meth, [it])
2113 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2117 redef class AAssertExpr
2120 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2122 var cond = v.expr_bool(self.n_expr)
2123 v.add("if (!{cond}) \{")
2127 v.add_abort("Assert '{nid.text}' failed")
2129 v.add_abort("Assert failed")
2138 var res = v.new_var(self.mtype.as(not null))
2139 var i1 = v.expr_bool(self.n_expr)
2140 v.add("if ({i1}) \{")
2143 var i2 = v.expr_bool(self.n_expr2)
2144 v.add("{res} = {i2};")
2150 redef class AImpliesExpr
2153 var res = v.new_var(self.mtype.as(not null))
2154 var i1 = v.expr_bool(self.n_expr)
2155 v.add("if (!{i1}) \{")
2158 var i2 = v.expr_bool(self.n_expr2)
2159 v.add("{res} = {i2};")
2165 redef class AAndExpr
2168 var res = v.new_var(self.mtype.as(not null))
2169 var i1 = v.expr_bool(self.n_expr)
2170 v.add("if (!{i1}) \{")
2173 var i2 = v.expr_bool(self.n_expr2)
2174 v.add("{res} = {i2};")
2180 redef class ANotExpr
2183 var cond = v.expr_bool(self.n_expr)
2184 return v.new_expr("!{cond}", self.mtype.as(not null))
2188 redef class AOrElseExpr
2191 var res = v.new_var(self.mtype.as(not null))
2192 var i1 = v.expr(self.n_expr, null)
2193 v.add("if ({i1}!=NULL) \{")
2196 var i2 = v.expr(self.n_expr2, null)
2203 redef class AIntExpr
2204 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2207 redef class AFloatExpr
2208 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2211 redef class ACharExpr
2212 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2215 redef class AArrayExpr
2218 var mtype = self.mtype.as(MClassType).arguments.first
2219 var array = new Array[RuntimeVariable]
2220 for nexpr in self.n_exprs.n_exprs do
2221 var i = v.expr(nexpr, mtype)
2224 return v.array_instance(array, mtype)
2228 redef class AStringFormExpr
2229 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2232 redef class ASuperstringExpr
2235 var array = new Array[RuntimeVariable]
2236 for ne in self.n_exprs do
2237 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2238 var i = v.expr(ne, null)
2241 var a = v.array_instance(array, v.object_type)
2242 var res = v.send(v.get_property("to_s", a.mtype), [a])
2247 redef class ACrangeExpr
2250 var i1 = v.expr(self.n_expr, null)
2251 var i2 = v.expr(self.n_expr2, null)
2252 var mtype = self.mtype.as(MClassType)
2253 var res = v.init_instance(mtype)
2254 var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
2259 redef class AOrangeExpr
2262 var i1 = v.expr(self.n_expr, null)
2263 var i2 = v.expr(self.n_expr2, null)
2264 var mtype = self.mtype.as(MClassType)
2265 var res = v.init_instance(mtype)
2266 var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
2271 redef class ATrueExpr
2272 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2275 redef class AFalseExpr
2276 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2279 redef class ANullExpr
2280 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2283 redef class AIsaExpr
2286 var i = v.expr(self.n_expr, null)
2287 return v.type_test(i, self.cast_type.as(not null), "isa")
2291 redef class AAsCastExpr
2294 var i = v.expr(self.n_expr, null)
2295 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2297 v.add_cast(i, self.mtype.as(not null), "as")
2302 redef class AAsNotnullExpr
2305 var i = v.expr(self.n_expr, null)
2306 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2308 v.add("if ({i} == NULL) \{")
2309 v.add_abort("Cast failed")
2315 redef class AParExpr
2316 redef fun expr(v) do return v.expr(self.n_expr, null)
2319 redef class AOnceExpr
2322 var mtype = self.mtype.as(not null)
2323 var name = v.get_name("varonce")
2324 var guard = v.get_name(name + "_guard")
2325 v.add_decl("static {mtype.ctype} {name};")
2326 v.add_decl("static int {guard};")
2327 var res = v.new_var(mtype)
2328 v.add("if ({guard}) \{")
2329 v.add("{res} = {name};")
2331 var i = v.expr(self.n_expr, mtype)
2332 v.add("{res} = {i};")
2333 v.add("{name} = {res};")
2334 v.add("{guard} = 1;")
2340 redef class ASendExpr
2343 var recv = v.expr(self.n_expr, null)
2345 for a in self.raw_arguments.as(not null) do
2346 args.add(v.expr(a, null))
2348 return v.compile_callsite(self.callsite.as(not null), args)
2352 redef class ASendReassignFormExpr
2355 var recv = v.expr(self.n_expr, null)
2357 for a in self.raw_arguments.as(not null) do
2358 args.add(v.expr(a, null))
2360 var value = v.expr(self.n_value, null)
2362 var left = v.compile_callsite(self.callsite.as(not null), args)
2365 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2369 v.compile_callsite(self.write_callsite.as(not null), args)
2373 redef class ASuperExpr
2376 var recv = v.frame.arguments.first
2378 for a in self.n_args.n_exprs do
2379 args.add(v.expr(a, null))
2381 if args.length == 1 then
2382 args = v.frame.arguments
2385 var mproperty = self.mproperty
2386 if mproperty != null then
2387 if mproperty.intro.msignature.arity == 0 then
2391 var res = v.send(mproperty, args)
2395 # stantard call-next-method
2396 return v.supercall(v.frame.mpropdef.as(MMethodDef), recv.mtype.as(MClassType), args)
2400 redef class ANewExpr
2403 var mtype = self.mtype.as(MClassType)
2405 var ctype = mtype.ctype
2406 if ctype == "val*" then
2407 recv = v.init_instance(mtype)
2408 else if ctype == "void*" then
2409 recv = v.new_expr("NULL/*special!*/", mtype)
2411 debug("cannot new {mtype}")
2415 for a in self.n_args.n_exprs do
2416 args.add(v.expr(a, null))
2418 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2419 if res2 != null then
2420 #self.debug("got {res2} from {mproperty}. drop {recv}")
2427 redef class AAttrExpr
2430 var recv = v.expr(self.n_expr, null)
2431 var mproperty = self.mproperty.as(not null)
2432 return v.read_attribute(mproperty, recv)
2436 redef class AAttrAssignExpr
2439 var recv = v.expr(self.n_expr, null)
2440 var i = v.expr(self.n_value, null)
2441 var mproperty = self.mproperty.as(not null)
2442 v.write_attribute(mproperty, recv, i)
2446 redef class AAttrReassignExpr
2449 var recv = v.expr(self.n_expr, null)
2450 var value = v.expr(self.n_value, null)
2451 var mproperty = self.mproperty.as(not null)
2452 var attr = v.read_attribute(mproperty, recv)
2453 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2455 v.write_attribute(mproperty, recv, res)
2459 redef class AIssetAttrExpr
2462 var recv = v.expr(self.n_expr, null)
2463 var mproperty = self.mproperty.as(not null)
2464 return v.isset_attribute(mproperty, recv)
2468 redef class ADebugTypeExpr
2477 redef class Array[E]
2478 # Return a new `Array` with the elements only contened in self and not in `o
`
2479 fun -(o: Array[E]): Array[E] do
2480 var res = new Array[E]
2481 for e in self do if not o.has(e) then res.add(e)
2487 # All `MProperty` associated to all `MClassDef` of `mclass
`
2488 fun properties(mclass: MClass): Set[MProperty] do
2489 if not self.properties_cache.has_key(mclass) then
2490 var properties = new HashSet[MProperty]
2491 var parents = new Array[MClass]
2492 if self.flatten_mclass_hierarchy.has(mclass) then
2493 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
2495 for parent in parents do
2496 properties.add_all(self.properties(parent))
2498 for mclassdef in mclass.mclassdefs do
2499 for mprop in mclassdef.intro_mproperties do
2500 properties.add(mprop)
2503 self.properties_cache[mclass] = properties
2505 return properties_cache[mclass]
2507 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]