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 # This is used to avoid adding an extern file more than once
512 private var seen_extern = new ArraySet[String]
514 # Generate code that initialize the attributes on a new instance
515 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
517 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
518 self.mainmodule.linearize_mclassdefs(cds)
520 var n = self.modelbuilder.mclassdef2nclassdef[cd]
521 for npropdef in n.n_propdefs do
522 if npropdef isa AAttrPropdef then
523 npropdef.init_expr(v, recv)
529 # Generate code that check if an attribute is correctly initialized
530 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
532 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
533 self.mainmodule.linearize_mclassdefs(cds)
535 var n = self.modelbuilder.mclassdef2nclassdef[cd]
536 for npropdef in n.n_propdefs do
537 if npropdef isa AAttrPropdef then
538 npropdef.check_expr(v, recv)
546 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
547 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
548 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
549 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
551 protected fun init_count_type_test_tags: HashMap[String, Int]
553 var res = new HashMap[String, Int]
554 for tag in count_type_test_tags do
560 # Display stats about compilation process
562 # * type tests against resolved types (`x
isa Collection[Animal]`)
563 # * type tests against unresolved types (`x
isa Collection[E
]`)
564 # * type tests skipped
569 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
570 print "# static count_type_test"
571 print "\tresolved:\tunresolved\tskipped\ttotal"
572 var count_type_test_total = init_count_type_test_tags
573 count_type_test_resolved["total"] = 0
574 count_type_test_unresolved["total"] = 0
575 count_type_test_skipped["total"] = 0
576 count_type_test_total["total"] = 0
577 for tag in count_type_test_tags do
578 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
579 count_type_test_resolved["total"] += count_type_test_resolved[tag]
580 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
581 count_type_test_skipped["total"] += count_type_test_skipped[tag]
582 count_type_test_total["total"] += count_type_test_total[tag]
584 var count_type_test = count_type_test_total["total"]
585 var tags = count_type_test_tags.to_a
589 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
590 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
591 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
592 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
599 # Avoid division by zero by returning the string "n/a"
600 fun div(a,b:Int):String
602 if b == 0 then return "n/a"
603 return ((a*10000/b).to_f / 100.0).to_precision(2)
607 # A file unit (may be more than one file if
608 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
611 var writers = new Array[CodeWriter]
612 var required_declarations = new HashSet[String]
615 # Where to store generated lines
618 var lines: List[String] = new List[String]
619 var decl_lines: List[String] = new List[String]
621 # Add a line in the main part of the generated C
622 fun add(s: String) do self.lines.add(s)
625 # (used for local or global declaration)
626 fun add_decl(s: String) do self.decl_lines.add(s)
631 file.writers.add(self)
635 # A visitor on the AST of property definition that generate the C code.
636 abstract class AbstractCompilerVisitor
638 type COMPILER: AbstractCompiler
640 # The associated compiler
641 var compiler: COMPILER
643 # The current visited AST node
644 var current_node: nullable ANode writable = null
646 # The current `Frame`
647 var frame: nullable Frame writable
649 # Alias for self.compiler.mainmodule.object_type
650 fun object_type: MClassType do return self.compiler.mainmodule.object_type
652 # Alias for self.compiler.mainmodule.bool_type
653 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
655 var writer: CodeWriter
657 init(compiler: COMPILER)
659 self.compiler = compiler
660 self.writer = new CodeWriter(compiler.files.last)
663 # Force to get the primitive class named `name
` or abort
664 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
666 # Force to get the primitive property named `name
` in the instance `recv
` or abort
667 fun get_property(name: String, recv: MType): MMethod
669 assert recv isa MClassType
670 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node.as(not null), name, recv.mclass, self.compiler.mainmodule)
673 fun compile_callsite(callsite: CallSite, args: Array[RuntimeVariable]): nullable RuntimeVariable
675 return self.send(callsite.mproperty, args)
678 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
680 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
682 # Transform varargs, in raw arguments, into a single argument of type `Array`
683 # Note: this method modify the given `args
`
684 # If there is no vararg, then `args
` is not modified.
685 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
687 var recv = args.first
688 var vararg_rank = msignature.vararg_rank
689 if vararg_rank >= 0 then
690 assert args.length >= msignature.arity + 1 # because of self
692 args = new Array[RuntimeVariable]
694 args.add(rawargs.first) # recv
696 for i in [0..vararg_rank[ do
697 args.add(rawargs[i+1])
700 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
701 var vararg = new Array[RuntimeVariable]
702 for i in [vararg_rank..vararg_lastrank] do
703 vararg.add(rawargs[i+1])
706 var elttype = msignature.mparameters[vararg_rank].mtype
707 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
709 for i in [vararg_lastrank+1..rawargs.length-1[ do
710 args.add(rawargs[i+1])
713 rawargs.add_all(args)
719 # Anchor a type to the main module and the current receiver
720 fun anchor(mtype: MType): MType
722 if not mtype.need_anchor then return mtype
723 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
726 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
728 if not mtype.need_anchor then return mtype
729 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
732 # Unsafely cast a value to a new type
733 # ie the result share the same C variable but my have a different mcasttype
734 # NOTE: if the adaptation is useless then `value
` is returned as it.
735 # ENSURE: `result
.name
== value
.name
`
736 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
738 mtype = self.anchor(mtype)
739 var valmtype = value.mcasttype
740 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
744 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
745 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
748 var res = new RuntimeVariable(value.name, valmtype, mtype)
753 # Generate a super call from a method definition
754 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
756 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
758 # Box or unbox a value to another type iff a C type conversion is needed
759 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
760 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
762 # Generate a polymorphic subtype test
763 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
765 # Generate the code required to dynamically check if 2 objects share the same runtime type
766 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
768 # Generate a Nit "is" for two runtime_variables
769 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
773 # Generate a static call on a method definition
774 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
776 # Generate a polymorphic send for the method `m
` and the arguments `args
`
777 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
779 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
780 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
782 assert t isa MClassType
783 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
784 return self.call(propdef, t, args)
787 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
788 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
790 assert t isa MClassType
791 m = m.lookup_next_definition(self.compiler.mainmodule, t)
792 return self.call(m, t, args)
795 # Attributes handling
797 # Generate a polymorphic attribute is_set test
798 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
800 # Generate a polymorphic attribute read
801 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
803 # Generate a polymorphic attribute write
804 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
808 # Add a check and an abort for a null reciever if needed
809 fun check_recv_notnull(recv: RuntimeVariable)
811 if self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then return
813 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
815 self.add("if ({recv} == NULL) \{")
816 self.add_abort("Reciever is null")
823 private var names: HashSet[String] = new HashSet[String]
824 private var last: Int = 0
826 # Return a new name based on `s
` and unique in the visitor
827 fun get_name(s: String): String
829 if not self.names.has(s) then
833 var i = self.last + 1
836 if not self.names.has(s2) then
845 # Return an unique and stable identifier associated with an escapemark
846 fun escapemark_name(e: nullable EscapeMark): String
849 if escapemark_names.has_key(e) then return escapemark_names[e]
851 if name == null then name = "label"
852 name = get_name(name)
853 escapemark_names[e] = name
857 private var escapemark_names = new HashMap[EscapeMark, String]
859 # Return a "const char*" variable associated to the classname of the dynamic type of an object
860 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
861 fun class_name_string(value: RuntimeVariable): String is abstract
865 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
867 # Return the local runtime_variable associated to a Nit local variable
868 fun variable(variable: Variable): RuntimeVariable
870 if self.variables.has_key(variable) then
871 return self.variables[variable]
873 var name = self.get_name("var_{variable.name}")
874 var mtype = variable.declared_type.as(not null)
875 mtype = self.anchor(mtype)
876 var res = new RuntimeVariable(name, mtype, mtype)
877 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
878 self.variables[variable] = res
883 # Return a new uninitialized local runtime_variable
884 fun new_var(mtype: MType): RuntimeVariable
886 mtype = self.anchor(mtype)
887 var name = self.get_name("var")
888 var res = new RuntimeVariable(name, mtype, mtype)
889 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
893 # Return a new uninitialized named runtime_variable
894 fun new_named_var(mtype: MType, name: String): RuntimeVariable
896 mtype = self.anchor(mtype)
897 var res = new RuntimeVariable(name, mtype, mtype)
898 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
902 # Correctly assign a left and a right value
903 # Boxing and unboxing is performed if required
904 fun assign(left, right: RuntimeVariable)
906 right = self.autobox(right, left.mtype)
907 self.add("{left} = {right};")
912 # Generate a alloc-instance + init-attributes
913 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
915 # Generate an integer value
916 fun int_instance(value: Int): RuntimeVariable
918 var res = self.new_var(self.get_class("Int").mclass_type)
919 self.add("{res} = {value};")
923 # Generate a string value
924 fun string_instance(string: String): RuntimeVariable
926 var mtype = self.get_class("String").mclass_type
927 var name = self.get_name("varonce")
928 self.add_decl("static {mtype.ctype} {name};")
929 var res = self.new_var(mtype)
930 self.add("if ({name}) \{")
931 self.add("{res} = {name};")
932 self.add("\} else \{")
933 var native_mtype = self.get_class("NativeString").mclass_type
934 var nat = self.new_var(native_mtype)
935 self.add("{nat} = \"{string.escape_to_c}\";")
936 var length = self.int_instance(string.length)
937 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
938 self.add("{name} = {res};")
943 # Generate an array value
944 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
946 # Get an instance of a array for a vararg
947 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
951 # Add a line in the main part of the generated C
952 fun add(s: String) do self.writer.lines.add(s)
955 # (used for local or global declaration)
956 fun add_decl(s: String) do self.writer.decl_lines.add(s)
958 # Request the presence of a global declaration
959 fun require_declaration(key: String)
961 self.writer.file.required_declarations.add(key)
964 # Add a declaration in the local-header
965 # The declaration is ensured to be present once
966 fun declare_once(s: String)
968 self.compiler.provide_declaration(s, s)
969 self.require_declaration(s)
972 # look for a needed .h and .c file for a given .nit source-file
973 # FIXME: bad API, parameter should be a `MModule`, not its source-file
974 fun add_extern(file: String)
976 file = file.strip_extension(".nit")
977 var tryfile = file + ".nit.h"
978 if tryfile.file_exists then
979 self.declare_once("#include \"{"..".join_path(tryfile)}\"")
981 tryfile = file + "_nit.h"
982 if tryfile.file_exists then
983 self.declare_once("#include \"{"..".join_path(tryfile)}\"")
986 if self.compiler.seen_extern.has(file) then return
987 self.compiler.seen_extern.add(file)
988 tryfile = file + ".nit.c"
989 if not tryfile.file_exists then
990 tryfile = file + "_nit.c"
991 if not tryfile.file_exists then return
993 var f = new ExternCFile(tryfile, "")
994 self.compiler.extern_bodies.add(f)
997 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
998 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1000 var res = new_var(mtype)
1001 self.add("{res} = {cexpr};")
1005 # Generate generic abort
1006 # used by aborts, asserts, casts, etc.
1007 fun add_abort(message: String)
1009 self.add("fprintf(stderr, \"Runtime error: %s\", \"{message.escape_to_c}\");")
1015 if self.current_node != null and self.current_node.location.file != null then
1016 self.add("fprintf(stderr, \" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1018 self.add("fprintf(stderr, \"\\n\");")
1020 self.add("show_backtrace(1);")
1023 # Add a dynamic cast
1024 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1026 var res = self.type_test(value, mtype, tag)
1027 self.add("if (!{res}) \{")
1028 var cn = self.class_name_string(value)
1029 self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1034 # Generate a return with the value `s
`
1035 fun ret(s: RuntimeVariable)
1037 self.assign(self.frame.returnvar.as(not null), s)
1038 self.add("goto {self.frame.returnlabel.as(not null)};")
1041 # Compile a statement (if any)
1042 fun stmt(nexpr: nullable AExpr)
1044 if nexpr == null then return
1045 var old = self.current_node
1046 self.current_node = nexpr
1048 self.current_node = old
1051 # Compile an expression an return its result
1052 # `mtype
` is the expected return type, pass null if no specific type is expected.
1053 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1055 var old = self.current_node
1056 self.current_node = nexpr
1057 var res = nexpr.expr(self).as(not null)
1058 if mtype != null then
1059 mtype = self.anchor(mtype)
1060 res = self.autobox(res, mtype)
1062 res = autoadapt(res, nexpr.mtype.as(not null))
1063 var implicit_cast_to = nexpr.implicit_cast_to
1064 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1065 add_cast(res, implicit_cast_to, "auto")
1066 res = autoadapt(res, implicit_cast_to)
1068 self.current_node = old
1072 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1073 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1075 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1076 fun debug(message: String)
1078 var node = self.current_node
1079 if node == null then
1080 print "?: {message}"
1084 self.add("/* DEBUG: {message} */")
1088 # A C function associated to a Nit method
1089 # Because of customization, a given Nit method can be compiler more that once
1090 abstract class AbstractRuntimeFunction
1092 type COMPILER: AbstractCompiler
1093 type VISITOR: AbstractCompilerVisitor
1095 # The associated Nit method
1096 var mmethoddef: MMethodDef
1098 # The mangled c name of the runtime_function
1099 # Subclasses should redefine `build_c_name
` instead
1102 var res = self.c_name_cache
1103 if res != null then return res
1104 res = self.build_c_name
1105 self.c_name_cache = res
1109 # Non cached version of `c_name
`
1110 protected fun build_c_name: String is abstract
1112 protected var c_name_cache: nullable String writable = null
1114 # Implements a call of the runtime_function
1115 # May inline the body or generate a C function call
1116 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1118 # Generate the code for the `AbstractRuntimeFunction`
1119 # Warning: compile more than once compilation makes CC unhappy
1120 fun compile_to_c(compiler: COMPILER) is abstract
1123 # A runtime variable hold a runtime value in C.
1124 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1126 # 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.
1127 class RuntimeVariable
1128 # The name of the variable in the C code
1131 # The static type of the variable (as declard in C)
1134 # The current casted type of the variable (as known in Nit)
1135 var mcasttype: MType writable
1137 # If the variable exaclty a mcasttype?
1138 # false (usual value) means that the variable is a mcasttype or a subtype.
1139 var is_exact: Bool writable = false
1141 init(name: String, mtype: MType, mcasttype: MType)
1145 self.mcasttype = mcasttype
1146 assert not mtype.need_anchor
1147 assert not mcasttype.need_anchor
1150 redef fun to_s do return name
1155 if self.is_exact then
1156 exact_str = " exact"
1161 if self.mtype == self.mcasttype then
1162 type_str = "{mtype}{exact_str}"
1164 type_str = "{mtype}({mcasttype}{exact_str})"
1166 return "<{name}:{type_str}>"
1170 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1173 type VISITOR: AbstractCompilerVisitor
1175 # The associated visitor
1176 var visitor: VISITOR
1178 # The executed property.
1179 # A Method in case of a call, an attribute in case of a default initialization.
1180 var mpropdef: MPropDef
1182 # The static type of the receiver
1183 var receiver: MClassType
1185 # Arguments of the method (the first is the receiver)
1186 var arguments: Array[RuntimeVariable]
1188 # The runtime_variable associated to the return (in a function)
1189 var returnvar: nullable RuntimeVariable writable = null
1191 # The label at the end of the property
1192 var returnlabel: nullable String writable = null
1195 # An extern C file to compile
1197 # The filename of the file
1198 var filename: String
1199 # Additionnal specific CC compiler -c flags
1204 # Return the C type associated to a given Nit static type
1205 fun ctype: String do return "val*"
1207 fun ctypename: String do return "val"
1209 # Return the name of the C structure associated to a Nit live type
1210 fun c_name: String is abstract
1211 protected var c_name_cache: nullable String protected writable
1214 redef class MClassType
1217 var res = self.c_name_cache
1218 if res != null then return res
1219 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1220 self.c_name_cache = res
1224 redef fun ctype: String
1226 if mclass.name == "Int" then
1228 else if mclass.name == "Bool" then
1230 else if mclass.name == "Char" then
1232 else if mclass.name == "Float" then
1234 else if mclass.name == "NativeString" then
1236 else if mclass.name == "NativeArray" then
1238 else if mclass.kind == extern_kind then
1245 redef fun ctypename: String
1247 if mclass.name == "Int" then
1249 else if mclass.name == "Bool" then
1251 else if mclass.name == "Char" then
1253 else if mclass.name == "Float" then
1255 else if mclass.name == "NativeString" then
1257 else if mclass.name == "NativeArray" then
1258 #return "{self.arguments.first.ctype}*"
1260 else if mclass.kind == extern_kind then
1268 redef class MGenericType
1271 var res = self.c_name_cache
1272 if res != null then return res
1274 for t in self.arguments do
1275 res = res + t.c_name
1277 self.c_name_cache = res
1282 redef class MParameterType
1285 var res = self.c_name_cache
1286 if res != null then return res
1287 res = "{self.mclass.c_name}_FT{self.rank}"
1288 self.c_name_cache = res
1293 redef class MVirtualType
1296 var res = self.c_name_cache
1297 if res != null then return res
1298 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1299 self.c_name_cache = res
1304 redef class MNullableType
1307 var res = self.c_name_cache
1308 if res != null then return res
1309 res = "nullable_{self.mtype.c_name}"
1310 self.c_name_cache = res
1316 # Return the name of the C structure associated to a Nit class
1317 fun c_name: String do
1318 var res = self.c_name_cache
1319 if res != null then return res
1320 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1321 self.c_name_cache = res
1324 private var c_name_cache: nullable String
1327 redef class MProperty
1328 fun c_name: String do
1329 var res = self.c_name_cache
1330 if res != null then return res
1331 res = "{self.intro.c_name}"
1332 self.c_name_cache = res
1335 private var c_name_cache: nullable String
1338 redef class MPropDef
1339 type VISITOR: AbstractCompilerVisitor
1341 private var c_name_cache: nullable String
1343 # The mangled name associated to the property
1346 var res = self.c_name_cache
1347 if res != null then return res
1348 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1349 self.c_name_cache = res
1354 redef class MMethodDef
1355 # Can the body be inlined?
1356 fun can_inline(v: VISITOR): Bool
1358 var modelbuilder = v.compiler.modelbuilder
1359 if modelbuilder.mpropdef2npropdef.has_key(self) then
1360 var npropdef = modelbuilder.mpropdef2npropdef[self]
1361 return npropdef.can_inline
1362 else if self.mproperty.name == "init" then
1363 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1370 # Inline the body in another visitor
1371 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1373 var modelbuilder = v.compiler.modelbuilder
1374 if modelbuilder.mpropdef2npropdef.has_key(self) then
1375 var npropdef = modelbuilder.mpropdef2npropdef[self]
1376 var oldnode = v.current_node
1377 v.current_node = npropdef
1378 self.compile_parameter_check(v, arguments)
1379 npropdef.compile_to_c(v, self, arguments)
1380 v.current_node = oldnode
1381 else if self.mproperty.name == "init" then
1382 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1383 var oldnode = v.current_node
1384 v.current_node = nclassdef
1385 self.compile_parameter_check(v, arguments)
1386 nclassdef.compile_to_c(v, self, arguments)
1387 v.current_node = oldnode
1394 # Generate type checks in the C code to check covariant parameters
1395 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1397 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1399 for i in [0..msignature.arity[ do
1400 # skip test for vararg since the array is instantiated with the correct polymorphic type
1401 if msignature.vararg_rank == i then continue
1403 # skip if the cast is not required
1404 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1405 if not origmtype.need_anchor then continue
1407 # get the parameter type
1408 var mtype = self.msignature.mparameters[i].mtype
1411 # note that v decides if and how to implements the cast
1412 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1413 v.add_cast(arguments[i+1], mtype, "covariance")
1420 redef class APropdef
1421 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1423 v.add("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1424 debug("Not yet implemented")
1427 fun can_inline: Bool do return true
1430 redef class AConcreteMethPropdef
1431 redef fun compile_to_c(v, mpropdef, arguments)
1433 for i in [0..mpropdef.msignature.arity[ do
1434 var variable = self.n_signature.n_params[i].variable.as(not null)
1435 v.assign(v.variable(variable), arguments[i+1])
1437 # Call the implicit super-init
1438 var auto_super_inits = self.auto_super_inits
1439 if auto_super_inits != null then
1440 var selfarg = [arguments.first]
1441 for auto_super_init in auto_super_inits do
1442 if auto_super_init.intro.msignature.arity == 0 then
1443 v.send(auto_super_init, selfarg)
1445 v.send(auto_super_init, arguments)
1449 v.stmt(self.n_block)
1452 redef fun can_inline
1454 if self.auto_super_inits != null then return false
1455 var nblock = self.n_block
1456 if nblock == null then return true
1457 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1458 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1463 redef class AInternMethPropdef
1464 redef fun compile_to_c(v, mpropdef, arguments)
1466 var pname = mpropdef.mproperty.name
1467 var cname = mpropdef.mclassdef.mclass.name
1468 var ret = mpropdef.msignature.return_mtype
1470 ret = v.resolve_for(ret, arguments.first)
1472 if pname != "==" and pname != "!=" then
1473 v.adapt_signature(mpropdef, arguments)
1475 if cname == "Int" then
1476 if pname == "output" then
1477 v.add("printf(\"%ld\\n\", {arguments.first});")
1479 else if pname == "object_id" then
1480 v.ret(arguments.first)
1482 else if pname == "+" then
1483 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1485 else if pname == "-" then
1486 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1488 else if pname == "unary -" then
1489 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1491 else if pname == "succ" then
1492 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1494 else if pname == "prec" then
1495 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1497 else if pname == "*" then
1498 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1500 else if pname == "/" then
1501 v.ret(v.new_expr("{arguments[0]} / {arguments[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 == "lshift" then
1507 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1509 else if pname == "rshift" then
1510 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1512 else if pname == "==" then
1513 v.ret(v.equal_test(arguments[0], arguments[1]))
1515 else if pname == "!=" then
1516 var res = v.equal_test(arguments[0], arguments[1])
1517 v.ret(v.new_expr("!{res}", ret.as(not null)))
1519 else if pname == "<" then
1520 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1522 else if pname == ">" then
1523 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", 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 == "to_f" then
1532 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
1534 else if pname == "ascii" then
1535 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1538 else if cname == "Char" then
1539 if pname == "output" then
1540 v.add("printf(\"%c\", {arguments.first});")
1542 else if pname == "object_id" then
1543 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1545 else if pname == "+" then
1546 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1548 else if pname == "-" then
1549 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1551 else if pname == "==" then
1552 v.ret(v.equal_test(arguments[0], arguments[1]))
1554 else if pname == "!=" then
1555 var res = v.equal_test(arguments[0], arguments[1])
1556 v.ret(v.new_expr("!{res}", ret.as(not null)))
1558 else if pname == "succ" then
1559 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1561 else if pname == "prec" then
1562 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1564 else if pname == "<" then
1565 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1567 else if pname == ">" then
1568 v.ret(v.new_expr("{arguments[0]} > {arguments[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 == "to_i" then
1577 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
1579 else if pname == "ascii" then
1580 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
1583 else if cname == "Bool" then
1584 if pname == "output" then
1585 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
1587 else if pname == "object_id" then
1588 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1590 else if pname == "==" then
1591 v.ret(v.equal_test(arguments[0], arguments[1]))
1593 else if pname == "!=" then
1594 var res = v.equal_test(arguments[0], arguments[1])
1595 v.ret(v.new_expr("!{res}", ret.as(not null)))
1598 else if cname == "Float" then
1599 if pname == "output" then
1600 v.add("printf(\"%f\\n\", {arguments.first});")
1602 else if pname == "object_id" then
1603 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
1605 else if pname == "+" then
1606 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1608 else if pname == "-" then
1609 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1611 else if pname == "unary -" then
1612 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1614 else if pname == "succ" then
1615 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1617 else if pname == "prec" then
1618 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1620 else if pname == "*" then
1621 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1623 else if pname == "/" then
1624 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1626 else if pname == "==" then
1627 v.ret(v.equal_test(arguments[0], arguments[1]))
1629 else if pname == "!=" then
1630 var res = v.equal_test(arguments[0], arguments[1])
1631 v.ret(v.new_expr("!{res}", ret.as(not null)))
1633 else if pname == "<" then
1634 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1636 else if pname == ">" then
1637 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", 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 == "to_i" then
1646 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
1649 else if cname == "NativeString" then
1650 if pname == "[]" then
1651 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
1653 else if pname == "[]=" then
1654 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1656 else if pname == "copy_to" then
1657 v.add("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1659 else if pname == "atoi" then
1660 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
1663 else if cname == "NativeArray" then
1664 v.native_array_def(pname, ret, arguments)
1667 if pname == "exit" then
1668 v.add("exit({arguments[1]});")
1670 else if pname == "sys" then
1671 v.ret(v.new_expr("glob_sys", ret.as(not null)))
1673 else if pname == "calloc_string" then
1674 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
1676 else if pname == "calloc_array" then
1677 v.calloc_array(ret.as(not null), arguments)
1679 else if pname == "object_id" then
1680 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1682 else if pname == "is_same_type" then
1683 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
1685 else if pname == "is_same_instance" then
1686 v.ret(v.equal_test(arguments[0], arguments[1]))
1688 else if pname == "output_class_name" then
1689 var nat = v.class_name_string(arguments.first)
1690 v.add("printf(\"%s\\n\", {nat});")
1692 else if pname == "native_class_name" then
1693 var nat = v.class_name_string(arguments.first)
1694 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
1696 else if pname == "force_garbage_collection" then
1697 v.add("nit_gcollect();")
1699 else if pname == "native_argc" then
1700 v.ret(v.new_expr("glob_argc", ret.as(not null)))
1702 else if pname == "native_argv" then
1703 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
1706 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
1707 debug("Not implemented {mpropdef}")
1711 redef class AExternMethPropdef
1712 redef fun compile_to_c(v, mpropdef, arguments)
1715 var nextern = self.n_extern
1716 if nextern == null then
1717 v.add("fprintf(stderr, \"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1718 v.add("show_backtrace(1);")
1721 externname = nextern.text.substring(1, nextern.text.length-2)
1722 if location.file != null then
1723 var file = location.file.filename
1726 var res: nullable RuntimeVariable = null
1727 var ret = mpropdef.msignature.return_mtype
1729 ret = v.resolve_for(ret, arguments.first)
1730 res = v.new_var(ret)
1732 v.adapt_signature(mpropdef, arguments)
1735 v.add("{externname}({arguments.join(", ")});")
1737 v.add("{res} = {externname}({arguments.join(", ")});")
1743 redef class AExternInitPropdef
1744 redef fun compile_to_c(v, mpropdef, arguments)
1747 var nextern = self.n_extern
1748 if nextern == null then
1749 v.add("printf(\"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1750 v.add("show_backtrace(1);")
1753 externname = nextern.text.substring(1, nextern.text.length-2)
1754 if location.file != null then
1755 var file = location.file.filename
1758 v.adapt_signature(mpropdef, arguments)
1759 var ret = arguments.first.mtype
1760 var res = v.new_var(ret)
1764 v.add("{res} = {externname}({arguments.join(", ")});")
1769 redef class AAttrPropdef
1770 redef fun compile_to_c(v, mpropdef, arguments)
1772 if arguments.length == 1 then
1773 var res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
1774 v.assign(v.frame.returnvar.as(not null), res)
1776 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
1780 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1782 var nexpr = self.n_expr
1783 if nexpr != null then
1784 var oldnode = v.current_node
1785 v.current_node = self
1786 var old_frame = v.frame
1787 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1789 var value = v.expr(nexpr, self.mpropdef.static_mtype)
1790 v.write_attribute(self.mpropdef.mproperty, recv, value)
1792 v.current_node = oldnode
1796 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1798 var nexpr = self.n_expr
1799 if nexpr != null then return
1801 var oldnode = v.current_node
1802 v.current_node = self
1803 var old_frame = v.frame
1804 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1806 # Force read to check the initialization
1807 v.read_attribute(self.mpropdef.mproperty, recv)
1809 v.current_node = oldnode
1813 redef class AClassdef
1814 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1816 if mpropdef == self.mfree_init then
1817 var super_inits = self.super_inits
1818 if super_inits != null then
1819 assert arguments.length == 1
1820 for su in super_inits do
1821 v.send(su, arguments)
1825 var recv = arguments.first
1827 # Collect undefined attributes
1828 for npropdef in self.n_propdefs do
1829 if npropdef isa AAttrPropdef and npropdef.n_expr == null then
1830 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
1840 redef class ADeferredMethPropdef
1841 redef fun compile_to_c(v, mpropdef, arguments) do
1842 var cn = v.class_name_string(arguments.first)
1843 v.add("fprintf(stderr, \"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1846 redef fun can_inline do return true
1850 # Try to compile self as an expression
1851 # Do not call this method directly, use `v
.expr
` instead
1852 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
1854 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
1855 var mtype = self.mtype
1856 if mtype == null then
1859 var res = v.new_var(mtype)
1860 v.add("/* {res} = NOT YET {class_name} */")
1865 # Try to compile self as a statement
1866 # Do not call this method directly, use `v
.stmt
` instead
1867 private fun stmt(v: AbstractCompilerVisitor)
1870 if res != null then v.add("{res};")
1874 redef class ABlockExpr
1877 for e in self.n_expr do v.stmt(e)
1881 var last = self.n_expr.last
1882 for e in self.n_expr do
1883 if e == last then break
1886 return v.expr(last, null)
1890 redef class AVardeclExpr
1893 var variable = self.variable.as(not null)
1894 var ne = self.n_expr
1896 var i = v.expr(ne, variable.declared_type)
1897 v.assign(v.variable(variable), i)
1902 redef class AVarExpr
1905 var res = v.variable(self.variable.as(not null))
1906 var mtype = self.mtype.as(not null)
1907 return v.autoadapt(res, mtype)
1911 redef class AVarAssignExpr
1914 var variable = self.variable.as(not null)
1915 var i = v.expr(self.n_value, variable.declared_type)
1916 v.assign(v.variable(variable), i)
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)
1927 redef class AVarReassignExpr
1930 var variable = self.variable.as(not null)
1931 var vari = v.variable(variable)
1932 var value = v.expr(self.n_value, variable.declared_type)
1933 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
1935 v.assign(v.variable(variable), res)
1939 redef class ASelfExpr
1940 redef fun expr(v) do return v.frame.arguments.first
1943 redef class AContinueExpr
1944 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
1947 redef class ABreakExpr
1948 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
1951 redef class AReturnExpr
1954 var nexpr = self.n_expr
1955 if nexpr != null then
1956 var returnvar = v.frame.returnvar.as(not null)
1957 var i = v.expr(nexpr, returnvar.mtype)
1958 v.assign(returnvar, i)
1960 v.add("goto {v.frame.returnlabel.as(not null)};")
1964 redef class AAbortExpr
1965 redef fun stmt(v) do v.add_abort("Aborted")
1971 var cond = v.expr_bool(self.n_expr)
1972 v.add("if ({cond})\{")
1981 var res = v.new_var(self.mtype.as(not null))
1982 var cond = v.expr_bool(self.n_expr)
1983 v.add("if ({cond})\{")
1984 v.assign(res, v.expr(self.n_then.as(not null), null))
1986 v.assign(res, v.expr(self.n_else.as(not null), null))
1992 redef class AIfexprExpr
1995 var res = v.new_var(self.mtype.as(not null))
1996 var cond = v.expr_bool(self.n_expr)
1997 v.add("if ({cond})\{")
1998 v.assign(res, v.expr(self.n_then, null))
2000 v.assign(res, v.expr(self.n_else, null))
2009 v.stmt(self.n_block)
2010 var escapemark = self.escapemark
2011 if escapemark != null then
2012 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2017 redef class AWhileExpr
2021 var cond = v.expr_bool(self.n_expr)
2022 v.add("if (!{cond}) break;")
2023 v.stmt(self.n_block)
2024 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2026 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2030 redef class ALoopExpr
2034 v.stmt(self.n_block)
2035 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2037 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2041 redef class AForExpr
2044 # Shortcut on explicit range
2045 # Avoid the instantiation of the range and the iterator
2046 var nexpr = self.n_expr
2047 if self.variables.length == 1 and nexpr isa AOrangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2048 var from = v.expr(nexpr.n_expr, null)
2049 var to = v.expr(nexpr.n_expr2, null)
2050 var variable = v.variable(variables.first)
2052 v.assign(variable, from)
2053 v.add("for(;;) \{ /* shortcut range */")
2055 var ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2057 v.add("if(!{ok}) break;")
2059 v.stmt(self.n_block)
2061 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2062 var succ = v.send(v.get_property("succ", variable.mtype), [variable])
2064 v.assign(variable, succ)
2066 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2070 var cl = v.expr(self.n_expr, null)
2071 var it_meth = self.method_iterator
2072 assert it_meth != null
2073 var it = v.send(it_meth, [cl])
2076 var isok_meth = self.method_is_ok
2077 assert isok_meth != null
2078 var ok = v.send(isok_meth, [it])
2080 v.add("if(!{ok}) break;")
2081 if self.variables.length == 1 then
2082 var item_meth = self.method_item
2083 assert item_meth != null
2084 var i = v.send(item_meth, [it])
2086 v.assign(v.variable(variables.first), i)
2087 else if self.variables.length == 2 then
2088 var key_meth = self.method_key
2089 assert key_meth != null
2090 var i = v.send(key_meth, [it])
2092 v.assign(v.variable(variables[0]), i)
2093 var item_meth = self.method_item
2094 assert item_meth != null
2095 i = v.send(item_meth, [it])
2097 v.assign(v.variable(variables[1]), i)
2101 v.stmt(self.n_block)
2102 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2103 var next_meth = self.method_next
2104 assert next_meth != null
2105 v.send(next_meth, [it])
2107 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2111 redef class AAssertExpr
2114 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2116 var cond = v.expr_bool(self.n_expr)
2117 v.add("if (!{cond}) \{")
2121 v.add_abort("Assert '{nid.text}' failed")
2123 v.add_abort("Assert failed")
2132 var res = v.new_var(self.mtype.as(not null))
2133 var i1 = v.expr_bool(self.n_expr)
2134 v.add("if ({i1}) \{")
2137 var i2 = v.expr_bool(self.n_expr2)
2138 v.add("{res} = {i2};")
2144 redef class AImpliesExpr
2147 var res = v.new_var(self.mtype.as(not null))
2148 var i1 = v.expr_bool(self.n_expr)
2149 v.add("if (!{i1}) \{")
2152 var i2 = v.expr_bool(self.n_expr2)
2153 v.add("{res} = {i2};")
2159 redef class AAndExpr
2162 var res = v.new_var(self.mtype.as(not null))
2163 var i1 = v.expr_bool(self.n_expr)
2164 v.add("if (!{i1}) \{")
2167 var i2 = v.expr_bool(self.n_expr2)
2168 v.add("{res} = {i2};")
2174 redef class ANotExpr
2177 var cond = v.expr_bool(self.n_expr)
2178 return v.new_expr("!{cond}", self.mtype.as(not null))
2182 redef class AOrElseExpr
2185 var res = v.new_var(self.mtype.as(not null))
2186 var i1 = v.expr(self.n_expr, null)
2187 v.add("if ({i1}!=NULL) \{")
2190 var i2 = v.expr(self.n_expr2, null)
2197 redef class AIntExpr
2198 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2201 redef class AFloatExpr
2202 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2205 redef class ACharExpr
2206 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2209 redef class AArrayExpr
2212 var mtype = self.mtype.as(MClassType).arguments.first
2213 var array = new Array[RuntimeVariable]
2214 for nexpr in self.n_exprs.n_exprs do
2215 var i = v.expr(nexpr, mtype)
2218 return v.array_instance(array, mtype)
2222 redef class AStringFormExpr
2223 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2226 redef class ASuperstringExpr
2229 var array = new Array[RuntimeVariable]
2230 for ne in self.n_exprs do
2231 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2232 var i = v.expr(ne, null)
2235 var a = v.array_instance(array, v.object_type)
2236 var res = v.send(v.get_property("to_s", a.mtype), [a])
2241 redef class ACrangeExpr
2244 var i1 = v.expr(self.n_expr, null)
2245 var i2 = v.expr(self.n_expr2, null)
2246 var mtype = self.mtype.as(MClassType)
2247 var res = v.init_instance(mtype)
2248 var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
2253 redef class AOrangeExpr
2256 var i1 = v.expr(self.n_expr, null)
2257 var i2 = v.expr(self.n_expr2, null)
2258 var mtype = self.mtype.as(MClassType)
2259 var res = v.init_instance(mtype)
2260 var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
2265 redef class ATrueExpr
2266 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2269 redef class AFalseExpr
2270 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2273 redef class ANullExpr
2274 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2277 redef class AIsaExpr
2280 var i = v.expr(self.n_expr, null)
2281 return v.type_test(i, self.cast_type.as(not null), "isa")
2285 redef class AAsCastExpr
2288 var i = v.expr(self.n_expr, null)
2289 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2291 v.add_cast(i, self.mtype.as(not null), "as")
2296 redef class AAsNotnullExpr
2299 var i = v.expr(self.n_expr, null)
2300 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2302 v.add("if ({i} == NULL) \{")
2303 v.add_abort("Cast failed")
2309 redef class AParExpr
2310 redef fun expr(v) do return v.expr(self.n_expr, null)
2313 redef class AOnceExpr
2316 var mtype = self.mtype.as(not null)
2317 var name = v.get_name("varonce")
2318 var guard = v.get_name(name + "_guard")
2319 v.add_decl("static {mtype.ctype} {name};")
2320 v.add_decl("static int {guard};")
2321 var res = v.new_var(mtype)
2322 v.add("if ({guard}) \{")
2323 v.add("{res} = {name};")
2325 var i = v.expr(self.n_expr, mtype)
2326 v.add("{res} = {i};")
2327 v.add("{name} = {res};")
2328 v.add("{guard} = 1;")
2334 redef class ASendExpr
2337 var recv = v.expr(self.n_expr, null)
2339 for a in self.raw_arguments.as(not null) do
2340 args.add(v.expr(a, null))
2342 return v.compile_callsite(self.callsite.as(not null), args)
2346 redef class ASendReassignFormExpr
2349 var recv = v.expr(self.n_expr, null)
2351 for a in self.raw_arguments.as(not null) do
2352 args.add(v.expr(a, null))
2354 var value = v.expr(self.n_value, null)
2356 var left = v.compile_callsite(self.callsite.as(not null), args)
2359 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2363 v.compile_callsite(self.write_callsite.as(not null), args)
2367 redef class ASuperExpr
2370 var recv = v.frame.arguments.first
2372 for a in self.n_args.n_exprs do
2373 args.add(v.expr(a, null))
2375 if args.length == 1 then
2376 args = v.frame.arguments
2379 var mproperty = self.mproperty
2380 if mproperty != null then
2381 if mproperty.intro.msignature.arity == 0 then
2385 var res = v.send(mproperty, args)
2389 # stantard call-next-method
2390 return v.supercall(v.frame.mpropdef.as(MMethodDef), recv.mtype.as(MClassType), args)
2394 redef class ANewExpr
2397 var mtype = self.mtype.as(MClassType)
2399 var ctype = mtype.ctype
2400 if ctype == "val*" then
2401 recv = v.init_instance(mtype)
2402 else if ctype == "void*" then
2403 recv = v.new_expr("NULL/*special!*/", mtype)
2405 debug("cannot new {mtype}")
2409 for a in self.n_args.n_exprs do
2410 args.add(v.expr(a, null))
2412 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2413 if res2 != null then
2414 #self.debug("got {res2} from {mproperty}. drop {recv}")
2421 redef class AAttrExpr
2424 var recv = v.expr(self.n_expr, null)
2425 var mproperty = self.mproperty.as(not null)
2426 return v.read_attribute(mproperty, recv)
2430 redef class AAttrAssignExpr
2433 var recv = v.expr(self.n_expr, null)
2434 var i = v.expr(self.n_value, null)
2435 var mproperty = self.mproperty.as(not null)
2436 v.write_attribute(mproperty, recv, i)
2440 redef class AAttrReassignExpr
2443 var recv = v.expr(self.n_expr, null)
2444 var value = v.expr(self.n_value, null)
2445 var mproperty = self.mproperty.as(not null)
2446 var attr = v.read_attribute(mproperty, recv)
2447 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2449 v.write_attribute(mproperty, recv, res)
2453 redef class AIssetAttrExpr
2456 var recv = v.expr(self.n_expr, null)
2457 var mproperty = self.mproperty.as(not null)
2458 return v.isset_attribute(mproperty, recv)
2462 redef class ADebugTypeExpr
2471 redef class Array[E]
2472 # Return a new `Array` with the elements only contened in self and not in `o
`
2473 fun -(o: Array[E]): Array[E] do
2474 var res = new Array[E]
2475 for e in self do if not o.has(e) then res.add(e)
2481 # All `MProperty` associated to all `MClassDef` of `mclass
`
2482 fun properties(mclass: MClass): Set[MProperty] do
2483 if not self.properties_cache.has_key(mclass) then
2484 var properties = new HashSet[MProperty]
2485 var parents = new Array[MClass]
2486 if self.flatten_mclass_hierarchy.has(mclass) then
2487 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
2489 for parent in parents do
2490 properties.add_all(self.properties(parent))
2492 for mclassdef in mclass.mclassdefs do
2493 for mprop in mclassdef.intro_mproperties do
2494 properties.add(mprop)
2497 self.properties_cache[mclass] = properties
2499 return properties_cache[mclass]
2501 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]