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_hardening
: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
38 var opt_no_shortcut_range
: OptionBool = new OptionBool("Always insantiate a range and its iterator on 'for' loops", "--no-shortcut-range")
39 # --no-check-covariance
40 var opt_no_check_covariance
: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
41 # --no-check-initialization
42 var opt_no_check_initialization
: OptionBool = new OptionBool("Disable isset tests at the end of constructors (dangerous)", "--no-check-initialization")
44 var opt_no_check_assert
: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
46 var opt_no_check_autocast
: OptionBool = new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
48 var opt_no_check_other
: OptionBool = new OptionBool("Disable implicit tests: unset attribute, null receiver (dangerous)", "--no-check-other")
49 # --typing-test-metrics
50 var opt_typing_test_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
55 self.option_context
.add_option
(self.opt_output
, self.opt_no_cc
, self.opt_make_flags
, self.opt_hardening
, self.opt_no_shortcut_range
)
56 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
)
57 self.option_context
.add_option
(self.opt_typing_test_metrics
)
61 redef class ModelBuilder
62 # The list of directories to search for included C headers (-I for C compilers)
63 # The list is initially set with :
64 # * the toolcontext --cc-path option
65 # * the NIT_CC_PATH environment variable
66 # * some heuristics including the NIT_DIR environment variable and the progname of the process
67 # Path can be added (or removed) by the client
68 var cc_paths
= new Array[String]
70 redef init(model
, toolcontext
)
74 # Look for the the Nit clib path
75 var path_env
= "NIT_DIR".environ
76 if not path_env
.is_empty
then
77 var libname
= "{path_env}/clib"
78 if libname
.file_exists
then cc_paths
.add
(libname
)
81 var libname
= "{sys.program_name.dirname}/../clib"
82 if libname
.file_exists
then cc_paths
.add
(libname
.simplify_path
)
84 if cc_paths
.is_empty
then
85 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
88 # Add user defined cc_paths
89 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
91 path_env
= "NIT_CC_PATH".environ
92 if not path_env
.is_empty
then
93 cc_paths
.append
(path_env
.split_with
(':'))
98 protected fun write_and_make
(compiler
: AbstractCompiler)
100 var mainmodule
= compiler
.mainmodule
102 # Generate the .h and .c files
103 # A single C file regroups many compiled rumtime functions
104 # 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
106 self.toolcontext
.info
("*** WRITING C ***", 1)
110 var outname
= self.toolcontext
.opt_output
.value
111 if outname
== null then
112 outname
= "{mainmodule.name}"
115 var hfilename
= compiler
.header
.file
.name
+ ".h"
116 var hfilepath
= ".nit_compile/{hfilename}"
117 var h
= new OFStream.open
(hfilepath
)
118 for l
in compiler
.header
.decl_lines
do
122 for l
in compiler
.header
.lines
do
128 var cfiles
= new Array[String]
130 for f
in compiler
.files
do
132 var hfile
: nullable OFStream = null
134 var cfilename
= ".nit_compile/{f.name}.0.h"
135 hfile
= new OFStream.open
(cfilename
)
136 hfile
.write
"#include \"{hfilename}\
"\n"
137 for key
in f
.required_declarations
do
138 if not compiler
.provided_declarations
.has_key
(key
) then
139 print
"No provided declaration for {key}"
142 hfile
.write compiler
.provided_declarations
[key
]
146 var file
: nullable OFStream = null
147 for vis
in f
.writers
do
148 if vis
== compiler
.header
then continue
149 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
150 if total_lines
== 0 then continue
152 if file
== null or count
> 10000 then
154 if file
!= null then file
.close
155 cfilename
= ".nit_compile/{f.name}.{i}.c"
156 self.toolcontext
.info
("new C source files to compile: {cfilename}", 3)
157 cfiles
.add
(cfilename
)
158 file
= new OFStream.open
(cfilename
)
159 file
.write
"#include \"{f.name}.0.h\
"\n"
162 for l
in vis
.decl_lines
do
166 for l
in vis
.lines
do
171 if file
!= null then file
.close
174 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
176 # Generate the Makefile
178 var makename
= ".nit_compile/{mainmodule.name}.mk"
179 var makefile
= new OFStream.open
(makename
)
183 #p = "..".join_path(p)
184 cc_includes
+= " -I \"" + p + "\
""
186 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc\n\n")
187 makefile
.write
("all: {outname}\n\n")
189 var ofiles
= new Array[String]
190 # Compile each generated file
192 var o
= f
.strip_extension
(".c") + ".o"
193 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -D NONITCNI -c -o {o} {f}\n\n")
197 # Add gc_choser.h to aditionnal bodies
198 var gc_chooser
= new ExternCFile("{cc_paths.first}/gc_chooser.c", "-DWITH_LIBGC")
199 compiler
.extern_bodies
.add
(gc_chooser
)
201 # Compile each required extern body into a specific .o
202 for f
in compiler
.extern_bodies
do
203 var basename
= f
.filename
.basename
(".c")
204 var o
= ".nit_compile/{basename}.extern.o"
205 makefile
.write
("{o}: {f.filename}\n\t$(CC) $(CFLAGS) -D NONITCNI {f.cflags} -c -o {o} {f.filename}\n\n")
210 makefile
.write
("{outname}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outname} {ofiles.join(" ")} $(LDLIBS)\n\n")
212 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
214 self.toolcontext
.info
("Generated makefile: {makename}", 2)
217 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
219 # Execute the Makefile
221 if self.toolcontext
.opt_no_cc
.value
then return
224 self.toolcontext
.info
("*** COMPILING C ***", 1)
225 var makeflags
= self.toolcontext
.opt_make_flags
.value
226 if makeflags
== null then makeflags
= ""
227 self.toolcontext
.info
("make -B -f {makename} -j 4 {makeflags}", 2)
230 if self.toolcontext
.verbose_level
>= 3 then
231 res
= sys
.system
("make -B -f {makename} -j 4 {makeflags} 2>&1")
233 res
= sys
.system
("make -B -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
236 toolcontext
.error
(null, "make failed! Error code: {res}.")
240 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
244 # Singleton that store the knowledge about the compilation process
245 abstract class AbstractCompiler
246 type VISITOR: AbstractCompilerVisitor
248 # The main module of the program currently compiled
249 # Is assigned during the separate compilation
250 var mainmodule
: MModule writable
252 # The real main module of the program
253 var realmainmodule
: MModule
255 # The modeulbuilder used to know the model and the AST
256 var modelbuilder
: ModelBuilder protected writable
258 # Is hardening asked? (see --hardening)
259 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
261 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
263 self.mainmodule
= mainmodule
264 self.realmainmodule
= mainmodule
265 self.modelbuilder
= modelbuilder
268 # Force the creation of a new file
269 # The point is to avoid contamination between must-be-compiled-separately files
270 fun new_file
(name
: String): CodeFile
272 var f
= new CodeFile(name
)
277 # The list of all associated files
278 # Used to generate .c files
279 var files
: List[CodeFile] = new List[CodeFile]
281 # Initialize a visitor specific for a compiler engine
282 fun new_visitor
: VISITOR is abstract
284 # Where global declaration are stored (the main .h)
285 var header
: CodeWriter writable
287 # Provide a declaration that can be requested (before or latter) by a visitor
288 fun provide_declaration
(key
: String, s
: String)
290 if self.provided_declarations
.has_key
(key
) then
291 assert self.provided_declarations
[key
] == s
293 self.provided_declarations
[key
] = s
296 private var provided_declarations
= new HashMap[String, String]
299 # This method call compile_header_strucs method that has to be refined
300 fun compile_header
do
302 self.header
.add_decl
("#include <stdlib.h>")
303 self.header
.add_decl
("#include <stdio.h>")
304 self.header
.add_decl
("#include <string.h>")
305 self.header
.add_decl
("#include <gc_chooser.h>")
307 compile_header_structs
309 # Global variable used by the legacy native interface
310 self.header
.add_decl
("extern int glob_argc;")
311 self.header
.add_decl
("extern char **glob_argv;")
312 self.header
.add_decl
("extern val *glob_sys;")
315 # Declaration of structures the live Nit types
316 protected fun compile_header_structs
is abstract
318 # Generate the main C function.
320 # * allocate the Sys object if it exists
321 # * call init if is exists
322 # * call main if it exists
323 fun compile_main_function
325 var v
= self.new_visitor
326 v
.add_decl
("int glob_argc;")
327 v
.add_decl
("char **glob_argv;")
328 v
.add_decl
("val *glob_sys;")
330 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
331 for tag
in count_type_test_tags
do
332 v
.add_decl
("long count_type_test_resolved_{tag};")
333 v
.add_decl
("long count_type_test_unresolved_{tag};")
334 v
.add_decl
("long count_type_test_skipped_{tag};")
335 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
336 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
337 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
340 v
.add_decl
("int main(int argc, char** argv) \{")
341 v
.add
("glob_argc = argc; glob_argv = argv;")
342 v
.add
("initialize_gc_option();")
343 var main_type
= mainmodule
.sys_type
344 if main_type
!= null then
345 var mainmodule
= v
.compiler
.mainmodule
346 var glob_sys
= v
.init_instance
(main_type
)
347 v
.add
("glob_sys = {glob_sys};")
348 var main_init
= mainmodule
.try_get_primitive_method
("init", main_type
.mclass
)
349 if main_init
!= null then
350 v
.send
(main_init
, [glob_sys
])
352 var main_method
= mainmodule
.try_get_primitive_method
("main", main_type
.mclass
)
353 if main_method
!= null then
354 v
.send
(main_method
, [glob_sys
])
358 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
359 v
.add_decl
("long count_type_test_resolved_total = 0;")
360 v
.add_decl
("long count_type_test_unresolved_total = 0;")
361 v
.add_decl
("long count_type_test_skipped_total = 0;")
362 v
.add_decl
("long count_type_test_total_total = 0;")
363 for tag
in count_type_test_tags
do
364 v
.add_decl
("long count_type_test_total_{tag};")
365 v
.add
("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
366 v
.add
("count_type_test_resolved_total += count_type_test_resolved_{tag};")
367 v
.add
("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
368 v
.add
("count_type_test_skipped_total += count_type_test_skipped_{tag};")
369 v
.add
("count_type_test_total_total += count_type_test_total_{tag};")
371 v
.add
("printf(\"# dynamic count_type_test: total %l\\n\");")
372 v
.add
("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\
");")
373 var tags
= count_type_test_tags
.to_a
376 v
.add
("printf(\"{tag}\
");")
377 v
.add
("printf(\"\\t
%ld
(%.2f
%%)\
", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
378 v
.add
("printf(\"\\t
%ld
(%.2f
%%)\
", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
379 v
.add
("printf(\"\\t
%ld
(%.2f
%%)\
", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
380 v
.add
("printf(\"\\t
%ld
(%.2f
%%)\\n\
", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
387 # List of additional .c files required to compile (native interface)
388 var extern_bodies
= new Array[ExternCFile]
390 # This is used to avoid adding an extern file more than once
391 private var seen_extern
= new ArraySet[String]
393 # Generate code that check if an instance is correctly initialized
394 fun generate_check_init_instance
(mtype
: MClassType) is abstract
396 # Generate code that initialize the attributes on a new instance
397 fun generate_init_attr
(v
: VISITOR, recv
: RuntimeVariable, mtype
: MClassType)
399 var cds
= mtype
.collect_mclassdefs
(self.mainmodule
).to_a
400 self.mainmodule
.linearize_mclassdefs
(cds
)
402 var n
= self.modelbuilder
.mclassdef2nclassdef
[cd
]
403 for npropdef
in n
.n_propdefs
do
404 if npropdef
isa AAttrPropdef then
405 npropdef
.init_expr
(v
, recv
)
411 # Generate code that check if an attribute is correctly initialized
412 fun generate_check_attr
(v
: VISITOR, recv
: RuntimeVariable, mtype
: MClassType)
414 var cds
= mtype
.collect_mclassdefs
(self.mainmodule
).to_a
415 self.mainmodule
.linearize_mclassdefs
(cds
)
417 var n
= self.modelbuilder
.mclassdef2nclassdef
[cd
]
418 for npropdef
in n
.n_propdefs
do
419 if npropdef
isa AAttrPropdef then
420 npropdef
.check_expr
(v
, recv
)
428 var count_type_test_tags
: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
429 var count_type_test_resolved
: HashMap[String, Int] = init_count_type_test_tags
430 var count_type_test_unresolved
: HashMap[String, Int] = init_count_type_test_tags
431 var count_type_test_skipped
: HashMap[String, Int] = init_count_type_test_tags
433 protected fun init_count_type_test_tags
: HashMap[String, Int]
435 var res
= new HashMap[String, Int]
436 for tag
in count_type_test_tags
do
442 # Display stats about compilation process
444 # * type tests against resolved types (`x isa Collection[Animal]`)
445 # * type tests against unresolved types (`x isa Collection[E]`)
446 # * type tests skipped
451 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
452 print
"# static count_type_test"
453 print
"\tresolved:\tunresolved\tskipped\ttotal"
454 var count_type_test_total
= init_count_type_test_tags
455 count_type_test_resolved
["total"] = 0
456 count_type_test_unresolved
["total"] = 0
457 count_type_test_skipped
["total"] = 0
458 count_type_test_total
["total"] = 0
459 for tag
in count_type_test_tags
do
460 count_type_test_total
[tag
] = count_type_test_resolved
[tag
] + count_type_test_unresolved
[tag
] + count_type_test_skipped
[tag
]
461 count_type_test_resolved
["total"] += count_type_test_resolved
[tag
]
462 count_type_test_unresolved
["total"] += count_type_test_unresolved
[tag
]
463 count_type_test_skipped
["total"] += count_type_test_skipped
[tag
]
464 count_type_test_total
["total"] += count_type_test_total
[tag
]
466 var count_type_test
= count_type_test_total
["total"]
467 var tags
= count_type_test_tags
.to_a
471 printn
"\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
472 printn
"\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
473 printn
"\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
474 printn
"\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
481 # Avoid division by zero by returning the string "n/a"
482 fun div
(a
,b
:Int):String
484 if b
== 0 then return "n/a"
485 return ((a
*10000/b
).to_f
/ 100.0).to_precision
(2)
489 # A file unit (may be more than one file if
490 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
493 var writers
= new Array[CodeWriter]
494 var required_declarations
= new HashSet[String]
497 # Where to store generated lines
500 var lines
: List[String] = new List[String]
501 var decl_lines
: List[String] = new List[String]
503 # Add a line in the main part of the generated C
504 fun add
(s
: String) do self.lines
.add
(s
)
507 # (used for local or global declaration)
508 fun add_decl
(s
: String) do self.decl_lines
.add
(s
)
513 file
.writers
.add
(self)
517 # A visitor on the AST of property definition that generate the C code.
518 abstract class AbstractCompilerVisitor
520 type COMPILER: AbstractCompiler
522 # The associated compiler
523 var compiler
: COMPILER
525 # The current visited AST node
526 var current_node
: nullable ANode writable = null
528 # The current `Frame`
529 var frame
: nullable Frame writable
531 # Alias for self.compiler.mainmodule.object_type
532 fun object_type
: MClassType do return self.compiler
.mainmodule
.object_type
534 # Alias for self.compiler.mainmodule.bool_type
535 fun bool_type
: MClassType do return self.compiler
.mainmodule
.bool_type
537 var writer
: CodeWriter
539 init(compiler
: COMPILER)
541 self.compiler
= compiler
542 self.writer
= new CodeWriter(compiler
.files
.last
)
545 # Force to get the primitive class named `name` or abort
546 fun get_class
(name
: String): MClass do return self.compiler
.mainmodule
.get_primitive_class
(name
)
548 # Force to get the primitive property named `name` in the instance `recv` or abort
549 fun get_property
(name
: String, recv
: MType): MMethod
551 assert recv
isa MClassType
552 return self.compiler
.modelbuilder
.force_get_primitive_method
(self.current_node
.as(not null), name
, recv
.mclass
, self.compiler
.mainmodule
)
555 fun compile_callsite
(callsite
: CallSite, args
: Array[RuntimeVariable]): nullable RuntimeVariable
557 return self.send
(callsite
.mproperty
, args
)
560 fun calloc_array
(ret_type
: MType, arguments
: Array[RuntimeVariable]) is abstract
562 fun native_array_def
(pname
: String, ret_type
: nullable MType, arguments
: Array[RuntimeVariable]) is abstract
564 # Transform varargs, in raw arguments, into a single argument of type `Array`
565 # Note: this method modify the given `args`
566 # If there is no vararg, then `args` is not modified.
567 fun varargize
(mpropdef
: MPropDef, msignature
: MSignature, args
: Array[RuntimeVariable])
569 var recv
= args
.first
570 var vararg_rank
= msignature
.vararg_rank
571 if vararg_rank
>= 0 then
572 assert args
.length
>= msignature
.arity
+ 1 # because of self
574 args
= new Array[RuntimeVariable]
576 args
.add
(rawargs
.first
) # recv
578 for i
in [0..vararg_rank
[ do
579 args
.add
(rawargs
[i
+1])
582 var vararg_lastrank
= vararg_rank
+ rawargs
.length-1-msignature
.arity
583 var vararg
= new Array[RuntimeVariable]
584 for i
in [vararg_rank
..vararg_lastrank
] do
585 vararg
.add
(rawargs
[i
+1])
588 var elttype
= msignature
.mparameters
[vararg_rank
].mtype
589 args
.add
(self.vararg_instance
(mpropdef
, recv
, vararg
, elttype
))
591 for i
in [vararg_lastrank
+1..rawargs
.length-1
[ do
592 args
.add
(rawargs
[i
+1])
595 rawargs
.add_all
(args
)
601 # Anchor a type to the main module and the current receiver
602 fun anchor
(mtype
: MType): MType
604 if not mtype
.need_anchor
then return mtype
605 return mtype
.anchor_to
(self.compiler
.mainmodule
, self.frame
.receiver
)
608 fun resolve_for
(mtype
: MType, recv
: RuntimeVariable): MType
610 if not mtype
.need_anchor
then return mtype
611 return mtype
.resolve_for
(recv
.mcasttype
, self.frame
.receiver
, self.compiler
.mainmodule
, true)
614 # Unsafely cast a value to a new type
615 # ie the result share the same C variable but my have a different mcasttype
616 # NOTE: if the adaptation is useless then `value` is returned as it.
617 # ENSURE: `result.name == value.name`
618 fun autoadapt
(value
: RuntimeVariable, mtype
: MType): RuntimeVariable
620 mtype
= self.anchor
(mtype
)
621 var valmtype
= value
.mcasttype
622 if valmtype
.is_subtype
(self.compiler
.mainmodule
, null, mtype
) then
626 if valmtype
isa MNullableType and valmtype
.mtype
.is_subtype
(self.compiler
.mainmodule
, null, mtype
) then
627 var res
= new RuntimeVariable(value
.name
, valmtype
, valmtype
.mtype
)
630 var res
= new RuntimeVariable(value
.name
, valmtype
, mtype
)
635 # Generate a super call from a method definition
636 fun supercall
(m
: MMethodDef, recvtype
: MClassType, args
: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
638 fun adapt_signature
(m
: MMethodDef, args
: Array[RuntimeVariable]) is abstract
640 # Box or unbox a value to another type iff a C type conversion is needed
641 # ENSURE: `result.mtype.ctype == mtype.ctype`
642 fun autobox
(value
: RuntimeVariable, mtype
: MType): RuntimeVariable is abstract
644 # Generate a polymorphic subtype test
645 fun type_test
(value
: RuntimeVariable, mtype
: MType, tag
: String): RuntimeVariable is abstract
647 # Generate the code required to dynamically check if 2 objects share the same runtime type
648 fun is_same_type_test
(value1
, value2
: RuntimeVariable): RuntimeVariable is abstract
650 # Generate a Nit "is" for two runtime_variables
651 fun equal_test
(value1
, value2
: RuntimeVariable): RuntimeVariable is abstract
655 # Generate a static call on a method definition
656 fun call
(m
: MMethodDef, recvtype
: MClassType, args
: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
658 # Generate a polymorphic send for the method `m` and the arguments `args`
659 fun send
(m
: MMethod, args
: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
661 # Generate a monomorphic send for the method `m`, the type `t` and the arguments `args`
662 fun monomorphic_send
(m
: MMethod, t
: MType, args
: Array[RuntimeVariable]): nullable RuntimeVariable
664 assert t
isa MClassType
665 var propdef
= m
.lookup_first_definition
(self.compiler
.mainmodule
, t
)
666 return self.call
(propdef
, t
, args
)
669 # Attributes handling
671 # Generate a polymorphic attribute is_set test
672 fun isset_attribute
(a
: MAttribute, recv
: RuntimeVariable): RuntimeVariable is abstract
674 # Generate a polymorphic attribute read
675 fun read_attribute
(a
: MAttribute, recv
: RuntimeVariable): RuntimeVariable is abstract
677 # Generate a polymorphic attribute write
678 fun write_attribute
(a
: MAttribute, recv
: RuntimeVariable, value
: RuntimeVariable) is abstract
682 # Add a check and an abort for a null reciever if needed
683 fun check_recv_notnull
(recv
: RuntimeVariable)
685 if self.compiler
.modelbuilder
.toolcontext
.opt_no_check_other
.value
then return
687 var maybenull
= recv
.mcasttype
isa MNullableType or recv
.mcasttype
isa MNullType
689 self.add
("if ({recv} == NULL) \{")
690 self.add_abort
("Reciever is null")
695 # Generate a check-init-instance
696 fun check_init_instance
(recv
: RuntimeVariable, mtype
: MClassType) is abstract
700 private var names
: HashSet[String] = new HashSet[String]
701 private var last
: Int = 0
703 # Return a new name based on `s` and unique in the visitor
704 fun get_name
(s
: String): String
706 if not self.names
.has
(s
) then
710 var i
= self.last
+ 1
713 if not self.names
.has
(s2
) then
722 # Return an unique and stable identifier associated with an escapemark
723 fun escapemark_name
(e
: nullable EscapeMark): String
726 if escapemark_names
.has_key
(e
) then return escapemark_names
[e
]
728 if name
== null then name
= "label"
729 name
= get_name
(name
)
730 escapemark_names
[e
] = name
734 private var escapemark_names
= new HashMap[EscapeMark, String]
736 # Return a "const char*" variable associated to the classname of the dynamic type of an object
737 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
738 fun class_name_string
(value
: RuntimeVariable): String is abstract
742 protected var variables
: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
744 # Return the local runtime_variable associated to a Nit local variable
745 fun variable
(variable
: Variable): RuntimeVariable
747 if self.variables
.has_key
(variable
) then
748 return self.variables
[variable
]
750 var name
= self.get_name
("var_{variable.name}")
751 var mtype
= variable
.declared_type
.as(not null)
752 mtype
= self.anchor
(mtype
)
753 var res
= new RuntimeVariable(name
, mtype
, mtype
)
754 self.add_decl
("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
755 self.variables
[variable
] = res
760 # Return a new uninitialized local runtime_variable
761 fun new_var
(mtype
: MType): RuntimeVariable
763 mtype
= self.anchor
(mtype
)
764 var name
= self.get_name
("var")
765 var res
= new RuntimeVariable(name
, mtype
, mtype
)
766 self.add_decl
("{mtype.ctype} {name} /* : {mtype} */;")
770 # Return a new uninitialized named runtime_variable
771 fun new_named_var
(mtype
: MType, name
: String): RuntimeVariable
773 mtype
= self.anchor
(mtype
)
774 var res
= new RuntimeVariable(name
, mtype
, mtype
)
775 self.add_decl
("{mtype.ctype} {name} /* : {mtype} */;")
779 # Correctly assign a left and a right value
780 # Boxing and unboxing is performed if required
781 fun assign
(left
, right
: RuntimeVariable)
783 right
= self.autobox
(right
, left
.mtype
)
784 self.add
("{left} = {right};")
789 # Generate a alloc-instance + init-attributes
790 fun init_instance
(mtype
: MClassType): RuntimeVariable is abstract
792 # Generate an integer value
793 fun int_instance
(value
: Int): RuntimeVariable
795 var res
= self.new_var
(self.get_class
("Int").mclass_type
)
796 self.add
("{res} = {value};")
800 # Generate a string value
801 fun string_instance
(string
: String): RuntimeVariable
803 var mtype
= self.get_class
("String").mclass_type
804 var name
= self.get_name
("varonce")
805 self.add_decl
("static {mtype.ctype} {name};")
806 var res
= self.new_var
(mtype
)
807 self.add
("if ({name}) \{")
808 self.add
("{res} = {name};")
809 self.add
("\} else \{")
810 var nat
= self.new_var
(self.get_class
("NativeString").mclass_type
)
811 self.add
("{nat} = \"{string.escape_to_c}\
";")
812 var res2
= self.init_instance
(mtype
)
813 self.add
("{res} = {res2};")
814 var length
= self.int_instance
(string
.length
)
815 self.send
(self.get_property
("with_native", mtype
), [res
, nat
, length
])
816 self.check_init_instance
(res
, mtype
)
817 self.add
("{name} = {res};")
822 # Generate an array value
823 fun array_instance
(array
: Array[RuntimeVariable], elttype
: MType): RuntimeVariable is abstract
825 # Get an instance of a array for a vararg
826 fun vararg_instance
(mpropdef
: MPropDef, recv
: RuntimeVariable, varargs
: Array[RuntimeVariable], elttype
: MType): RuntimeVariable is abstract
830 # Add a line in the main part of the generated C
831 fun add
(s
: String) do self.writer
.lines
.add
(s
)
834 # (used for local or global declaration)
835 fun add_decl
(s
: String) do self.writer
.decl_lines
.add
(s
)
837 # Request the presence of a global declaration
838 fun require_declaration
(key
: String)
840 self.writer
.file
.required_declarations
.add
(key
)
843 # Add a declaration in the local-header
844 # The declaration is ensured to be present once
845 fun declare_once
(s
: String)
847 self.compiler
.provide_declaration
(s
, s
)
848 self.require_declaration
(s
)
851 # look for a needed .h and .c file for a given .nit source-file
852 # FIXME: bad API, parameter should be a `MModule`, not its source-file
853 fun add_extern
(file
: String)
855 file
= file
.strip_extension
(".nit")
856 var tryfile
= file
+ ".nit.h"
857 if tryfile
.file_exists
then
858 self.declare_once
("#include \"{"..".join_path(tryfile)}\
"")
860 tryfile
= file
+ "_nit.h"
861 if tryfile
.file_exists
then
862 self.declare_once
("#include \"{"..".join_path(tryfile)}\
"")
865 if self.compiler
.seen_extern
.has
(file
) then return
866 self.compiler
.seen_extern
.add
(file
)
867 tryfile
= file
+ ".nit.c"
868 if not tryfile
.file_exists
then
869 tryfile
= file
+ "_nit.c"
870 if not tryfile
.file_exists
then return
872 var f
= new ExternCFile(tryfile
, "")
873 self.compiler
.extern_bodies
.add
(f
)
876 # Return a new local runtime_variable initialized with the C expression `cexpr`.
877 fun new_expr
(cexpr
: String, mtype
: MType): RuntimeVariable
879 var res
= new_var
(mtype
)
880 self.add
("{res} = {cexpr};")
884 # Generate generic abort
885 # used by aborts, asserts, casts, etc.
886 fun add_abort
(message
: String)
888 if self.current_node
!= null and self.current_node
.location
.file
!= null then
889 self.add
("fprintf(stderr, \"Runtime error
: %s
(%s
:%d
)\\n\
", \"{message.escape_to_c}\
", \"{self.current_node.location.file.filename.escape_to_c}\
", {current_node.location.line_start});")
891 self.add
("fprintf(stderr, \"Runtime error
: %s\\n\
", \"{message.escape_to_c}\
");")
896 # Generate a return with the value `s`
897 fun ret
(s
: RuntimeVariable)
899 self.assign
(self.frame
.returnvar
.as(not null), s
)
900 self.add
("goto {self.frame.returnlabel.as(not null)};")
903 # Compile a statement (if any)
904 fun stmt
(nexpr
: nullable AExpr)
906 if nexpr
== null then return
907 var old
= self.current_node
908 self.current_node
= nexpr
910 self.current_node
= old
913 # Compile an expression an return its result
914 # `mtype` is the expected return type, pass null if no specific type is expected.
915 fun expr
(nexpr
: AExpr, mtype
: nullable MType): RuntimeVariable
917 var old
= self.current_node
918 self.current_node
= nexpr
919 var res
= nexpr
.expr
(self).as(not null)
920 if mtype
!= null then
921 mtype
= self.anchor
(mtype
)
922 res
= self.autobox
(res
, mtype
)
924 res
= autoadapt
(res
, nexpr
.mtype
.as(not null))
925 var implicit_cast_to
= nexpr
.implicit_cast_to
926 if implicit_cast_to
!= null and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_autocast
.value
then
927 var castres
= self.type_test
(res
, implicit_cast_to
, "auto")
928 self.add
("if (!{castres}) \{")
929 self.add_abort
("Cast failed")
931 res
= autoadapt
(res
, implicit_cast_to
)
933 self.current_node
= old
937 # Alias for `self.expr(nexpr, self.bool_type)`
938 fun expr_bool
(nexpr
: AExpr): RuntimeVariable do return expr
(nexpr
, bool_type
)
940 # Safely show a debug message on the current node and repeat the message in the C code as a comment
941 fun debug
(message
: String)
943 var node
= self.current_node
949 self.add
("/* DEBUG: {message} */")
953 # A C function associated to a Nit method
954 # Because of customization, a given Nit method can be compiler more that once
955 abstract class AbstractRuntimeFunction
957 type COMPILER: AbstractCompiler
958 type VISITOR: AbstractCompilerVisitor
960 # The associated Nit method
961 var mmethoddef
: MMethodDef
963 # The mangled c name of the runtime_function
964 # Subclasses should redefine `build_c_name` instead
967 var res
= self.c_name_cache
968 if res
!= null then return res
969 res
= self.build_c_name
970 self.c_name_cache
= res
974 # Non cached version of `c_name`
975 protected fun build_c_name
: String is abstract
977 protected var c_name_cache
: nullable String writable = null
979 # Implements a call of the runtime_function
980 # May inline the body or generate a C function call
981 fun call
(v
: VISITOR, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
983 # Generate the code for the `AbstractRuntimeFunction`
984 # Warning: compile more than once compilation makes CC unhappy
985 fun compile_to_c
(compiler
: COMPILER) is abstract
988 # A runtime variable hold a runtime value in C.
989 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
991 # 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.
992 class RuntimeVariable
993 # The name of the variable in the C code
996 # The static type of the variable (as declard in C)
999 # The current casted type of the variable (as known in Nit)
1000 var mcasttype
: MType writable
1002 # If the variable exaclty a mcasttype?
1003 # false (usual value) means that the variable is a mcasttype or a subtype.
1004 var is_exact
: Bool writable = false
1006 init(name
: String, mtype
: MType, mcasttype
: MType)
1010 self.mcasttype
= mcasttype
1011 assert not mtype
.need_anchor
1012 assert not mcasttype
.need_anchor
1015 redef fun to_s
do return name
1020 if self.is_exact
then
1021 exact_str
= " exact"
1026 if self.mtype
== self.mcasttype
then
1027 type_str
= "{mtype}{exact_str}"
1029 type_str
= "{mtype}({mcasttype}{exact_str})"
1031 return "<{name}:{type_str}>"
1035 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1038 type VISITOR: AbstractCompilerVisitor
1040 # The associated visitor
1041 var visitor
: VISITOR
1043 # The executed property.
1044 # A Method in case of a call, an attribute in case of a default initialization.
1045 var mpropdef
: MPropDef
1047 # The static type of the receiver
1048 var receiver
: MClassType
1050 # Arguments of the method (the first is the receiver)
1051 var arguments
: Array[RuntimeVariable]
1053 # The runtime_variable associated to the return (in a function)
1054 var returnvar
: nullable RuntimeVariable writable = null
1056 # The label at the end of the property
1057 var returnlabel
: nullable String writable = null
1060 # An extern C file to compile
1062 # The filename of the file
1063 var filename
: String
1064 # Additionnal specific CC compiler -c flags
1069 # Return the C type associated to a given Nit static type
1070 fun ctype
: String do return "val*"
1072 fun ctypename
: String do return "val"
1074 # Return the name of the C structure associated to a Nit live type
1075 fun c_name
: String is abstract
1076 protected var c_name_cache
: nullable String protected writable
1079 redef class MClassType
1082 var res
= self.c_name_cache
1083 if res
!= null then return res
1084 res
= "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1085 self.c_name_cache
= res
1089 redef fun ctype
: String
1091 if mclass
.name
== "Int" then
1093 else if mclass
.name
== "Bool" then
1095 else if mclass
.name
== "Char" then
1097 else if mclass
.name
== "Float" then
1099 else if mclass
.name
== "NativeString" then
1101 else if mclass
.name
== "NativeArray" then
1103 else if mclass
.kind
== extern_kind
then
1110 redef fun ctypename
: String
1112 if mclass
.name
== "Int" then
1114 else if mclass
.name
== "Bool" then
1116 else if mclass
.name
== "Char" then
1118 else if mclass
.name
== "Float" then
1120 else if mclass
.name
== "NativeString" then
1122 else if mclass
.name
== "NativeArray" then
1123 #return "{self.arguments.first.ctype}*"
1125 else if mclass
.kind
== extern_kind
then
1133 redef class MGenericType
1136 var res
= self.c_name_cache
1137 if res
!= null then return res
1139 for t
in self.arguments
do
1140 res
= res
+ t
.c_name
1142 self.c_name_cache
= res
1147 redef class MParameterType
1150 var res
= self.c_name_cache
1151 if res
!= null then return res
1152 res
= "{self.mclass.c_name}_FT{self.rank}"
1153 self.c_name_cache
= res
1158 redef class MVirtualType
1161 var res
= self.c_name_cache
1162 if res
!= null then return res
1163 res
= "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1164 self.c_name_cache
= res
1169 redef class MNullableType
1172 var res
= self.c_name_cache
1173 if res
!= null then return res
1174 res
= "nullable_{self.mtype.c_name}"
1175 self.c_name_cache
= res
1181 # Return the name of the C structure associated to a Nit class
1182 fun c_name
: String do
1183 var res
= self.c_name_cache
1184 if res
!= null then return res
1185 res
= "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1186 self.c_name_cache
= res
1189 private var c_name_cache
: nullable String
1192 redef class MProperty
1193 fun c_name
: String do
1194 var res
= self.c_name_cache
1195 if res
!= null then return res
1196 res
= "{self.intro.c_name}"
1197 self.c_name_cache
= res
1200 private var c_name_cache
: nullable String
1203 redef class MPropDef
1204 type VISITOR: AbstractCompilerVisitor
1206 private var c_name_cache
: nullable String
1208 # The mangled name associated to the property
1211 var res
= self.c_name_cache
1212 if res
!= null then return res
1213 res
= "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1214 self.c_name_cache
= res
1219 redef class MMethodDef
1220 # Can the body be inlined?
1221 fun can_inline
(v
: VISITOR): Bool
1223 var modelbuilder
= v
.compiler
.modelbuilder
1224 if modelbuilder
.mpropdef2npropdef
.has_key
(self) then
1225 var npropdef
= modelbuilder
.mpropdef2npropdef
[self]
1226 return npropdef
.can_inline
1227 else if self.mproperty
.name
== "init" then
1228 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1235 # Inline the body in another visitor
1236 fun compile_inside_to_c
(v
: VISITOR, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1238 var modelbuilder
= v
.compiler
.modelbuilder
1239 if modelbuilder
.mpropdef2npropdef
.has_key
(self) then
1240 var npropdef
= modelbuilder
.mpropdef2npropdef
[self]
1241 var oldnode
= v
.current_node
1242 v
.current_node
= npropdef
1243 self.compile_parameter_check
(v
, arguments
)
1244 npropdef
.compile_to_c
(v
, self, arguments
)
1245 v
.current_node
= oldnode
1246 else if self.mproperty
.name
== "init" then
1247 var nclassdef
= modelbuilder
.mclassdef2nclassdef
[self.mclassdef
]
1248 var oldnode
= v
.current_node
1249 v
.current_node
= nclassdef
1250 self.compile_parameter_check
(v
, arguments
)
1251 nclassdef
.compile_to_c
(v
, self, arguments
)
1252 v
.current_node
= oldnode
1259 # Generate type checks in the C code to check covariant parameters
1260 fun compile_parameter_check
(v
: VISITOR, arguments
: Array[RuntimeVariable])
1262 if v
.compiler
.modelbuilder
.toolcontext
.opt_no_check_covariance
.value
then return
1264 for i
in [0..msignature
.arity
[ do
1265 # skip test for vararg since the array is instantiated with the correct polymorphic type
1266 if msignature
.vararg_rank
== i
then continue
1268 # skip if the cast is not required
1269 var origmtype
= self.mproperty
.intro
.msignature
.mparameters
[i
].mtype
1270 if not origmtype
.need_anchor
then continue
1272 # get the parameter type
1273 var mtype
= self.msignature
.mparameters
[i
].mtype
1276 # note that v decides if and how to implements the cast
1277 v
.add
("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1278 var cond
= v
.type_test
(arguments
[i
+1], mtype
, "covariance")
1279 v
.add
("if (!{cond}) \{")
1280 v
.add_abort
("Cast failed")
1288 redef class APropdef
1289 fun compile_to_c
(v
: AbstractCompilerVisitor, mpropdef
: MMethodDef, arguments
: Array[RuntimeVariable])
1291 v
.add
("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at
{location.to_s}\\n\
");")
1292 debug
("Not yet implemented")
1295 fun can_inline
: Bool do return true
1298 redef class AConcreteMethPropdef
1299 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1301 for i
in [0..mpropdef
.msignature
.arity
[ do
1302 var variable
= self.n_signature
.n_params
[i
].variable
.as(not null)
1303 v
.assign
(v
.variable
(variable
), arguments
[i
+1])
1305 # Call the implicit super-init
1306 var auto_super_inits
= self.auto_super_inits
1307 if auto_super_inits
!= null then
1308 var selfarg
= [arguments
.first
]
1309 for auto_super_init
in auto_super_inits
do
1310 if auto_super_init
.intro
.msignature
.arity
== 0 then
1311 v
.send
(auto_super_init
, selfarg
)
1313 v
.send
(auto_super_init
, arguments
)
1317 v
.stmt
(self.n_block
)
1320 redef fun can_inline
1322 if self.auto_super_inits
!= null then return false
1323 var nblock
= self.n_block
1324 if nblock
== null then return true
1325 if (mpropdef
.mproperty
.name
== "==" or mpropdef
.mproperty
.name
== "!=") and mpropdef
.mclassdef
.mclass
.name
== "Object" then return true
1326 if nblock
isa ABlockExpr and nblock
.n_expr
.length
== 0 then return true
1331 redef class AInternMethPropdef
1332 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1334 var pname
= mpropdef
.mproperty
.name
1335 var cname
= mpropdef
.mclassdef
.mclass
.name
1336 var ret
= mpropdef
.msignature
.return_mtype
1338 ret
= v
.resolve_for
(ret
, arguments
.first
)
1340 if pname
!= "==" and pname
!= "!=" then
1341 v
.adapt_signature
(mpropdef
, arguments
)
1343 if cname
== "Int" then
1344 if pname
== "output" then
1345 v
.add
("printf(\"%ld\\n\
", {arguments.first});")
1347 else if pname
== "object_id" then
1348 v
.ret
(arguments
.first
)
1350 else if pname
== "+" then
1351 v
.ret
(v
.new_expr
("{arguments[0]} + {arguments[1]}", ret
.as(not null)))
1353 else if pname
== "-" then
1354 v
.ret
(v
.new_expr
("{arguments[0]} - {arguments[1]}", ret
.as(not null)))
1356 else if pname
== "unary -" then
1357 v
.ret
(v
.new_expr
("-{arguments[0]}", ret
.as(not null)))
1359 else if pname
== "succ" then
1360 v
.ret
(v
.new_expr
("{arguments[0]}+1", ret
.as(not null)))
1362 else if pname
== "prec" then
1363 v
.ret
(v
.new_expr
("{arguments[0]}-1", ret
.as(not null)))
1365 else if pname
== "*" then
1366 v
.ret
(v
.new_expr
("{arguments[0]} * {arguments[1]}", ret
.as(not null)))
1368 else if pname
== "/" then
1369 v
.ret
(v
.new_expr
("{arguments[0]} / {arguments[1]}", ret
.as(not null)))
1371 else if pname
== "%" then
1372 v
.ret
(v
.new_expr
("{arguments[0]} % {arguments[1]}", ret
.as(not null)))
1374 else if pname
== "lshift" then
1375 v
.ret
(v
.new_expr
("{arguments[0]} << {arguments[1]}", ret
.as(not null)))
1377 else if pname
== "rshift" then
1378 v
.ret
(v
.new_expr
("{arguments[0]} >> {arguments[1]}", ret
.as(not null)))
1380 else if pname
== "==" then
1381 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1383 else if pname
== "!=" then
1384 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1385 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1387 else if pname
== "<" then
1388 v
.ret
(v
.new_expr
("{arguments[0]} < {arguments[1]}", ret
.as(not null)))
1390 else if pname
== ">" then
1391 v
.ret
(v
.new_expr
("{arguments[0]} > {arguments[1]}", ret
.as(not null)))
1393 else if pname
== "<=" then
1394 v
.ret
(v
.new_expr
("{arguments[0]} <= {arguments[1]}", ret
.as(not null)))
1396 else if pname
== ">=" then
1397 v
.ret
(v
.new_expr
("{arguments[0]} >= {arguments[1]}", ret
.as(not null)))
1399 else if pname
== "to_f" then
1400 v
.ret
(v
.new_expr
("(double){arguments[0]}", ret
.as(not null)))
1402 else if pname
== "ascii" then
1403 v
.ret
(v
.new_expr
("{arguments[0]}", ret
.as(not null)))
1406 else if cname
== "Char" then
1407 if pname
== "output" then
1408 v
.add
("printf(\"%c\
", {arguments.first});")
1410 else if pname
== "object_id" then
1411 v
.ret
(arguments
.first
)
1413 else if pname
== "+" then
1414 v
.ret
(v
.new_expr
("{arguments[0]} + {arguments[1]}", ret
.as(not null)))
1416 else if pname
== "-" then
1417 v
.ret
(v
.new_expr
("{arguments[0]} - {arguments[1]}", ret
.as(not null)))
1419 else if pname
== "==" then
1420 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1422 else if pname
== "!=" then
1423 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1424 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1426 else if pname
== "succ" then
1427 v
.ret
(v
.new_expr
("{arguments[0]}+1", ret
.as(not null)))
1429 else if pname
== "prec" then
1430 v
.ret
(v
.new_expr
("{arguments[0]}-1", ret
.as(not null)))
1432 else if pname
== "<" then
1433 v
.ret
(v
.new_expr
("{arguments[0]} < {arguments[1]}", ret
.as(not null)))
1435 else if pname
== ">" then
1436 v
.ret
(v
.new_expr
("{arguments[0]} > {arguments[1]}", ret
.as(not null)))
1438 else if pname
== "<=" then
1439 v
.ret
(v
.new_expr
("{arguments[0]} <= {arguments[1]}", ret
.as(not null)))
1441 else if pname
== ">=" then
1442 v
.ret
(v
.new_expr
("{arguments[0]} >= {arguments[1]}", ret
.as(not null)))
1444 else if pname
== "to_i" then
1445 v
.ret
(v
.new_expr
("{arguments[0]}-'0'", ret
.as(not null)))
1447 else if pname
== "ascii" then
1448 v
.ret
(v
.new_expr
("(unsigned char){arguments[0]}", ret
.as(not null)))
1451 else if cname
== "Bool" then
1452 if pname
== "output" then
1453 v
.add
("printf({arguments.first}?\"true\\n\
":\"false\\n\
");")
1455 else if pname
== "object_id" then
1456 v
.ret
(arguments
.first
)
1458 else if pname
== "==" then
1459 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1461 else if pname
== "!=" then
1462 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1463 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1466 else if cname
== "Float" then
1467 if pname
== "output" then
1468 v
.add
("printf(\"%f\\n\
", {arguments.first});")
1470 else if pname
== "object_id" then
1471 v
.ret
(v
.new_expr
("(double){arguments.first}", ret
.as(not null)))
1473 else if pname
== "+" then
1474 v
.ret
(v
.new_expr
("{arguments[0]} + {arguments[1]}", ret
.as(not null)))
1476 else if pname
== "-" then
1477 v
.ret
(v
.new_expr
("{arguments[0]} - {arguments[1]}", ret
.as(not null)))
1479 else if pname
== "unary -" then
1480 v
.ret
(v
.new_expr
("-{arguments[0]}", ret
.as(not null)))
1482 else if pname
== "succ" then
1483 v
.ret
(v
.new_expr
("{arguments[0]}+1", ret
.as(not null)))
1485 else if pname
== "prec" then
1486 v
.ret
(v
.new_expr
("{arguments[0]}-1", ret
.as(not null)))
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
== "==" then
1495 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1497 else if pname
== "!=" then
1498 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1499 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1501 else if pname
== "<" then
1502 v
.ret
(v
.new_expr
("{arguments[0]} < {arguments[1]}", ret
.as(not null)))
1504 else if pname
== ">" then
1505 v
.ret
(v
.new_expr
("{arguments[0]} > {arguments[1]}", ret
.as(not null)))
1507 else if pname
== "<=" then
1508 v
.ret
(v
.new_expr
("{arguments[0]} <= {arguments[1]}", ret
.as(not null)))
1510 else if pname
== ">=" then
1511 v
.ret
(v
.new_expr
("{arguments[0]} >= {arguments[1]}", ret
.as(not null)))
1513 else if pname
== "to_i" then
1514 v
.ret
(v
.new_expr
("(long){arguments[0]}", ret
.as(not null)))
1517 else if cname
== "Char" then
1518 if pname
== "output" then
1519 v
.add
("printf(\"%c\
", {arguments.first});")
1521 else if pname
== "object_id" then
1522 v
.ret
(arguments
.first
)
1524 else if pname
== "==" then
1525 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1527 else if pname
== "!=" then
1528 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1529 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1531 else if pname
== "ascii" then
1532 v
.ret
(v
.new_expr
("{arguments[0]}", ret
.as(not null)))
1535 else if cname
== "NativeString" then
1536 if pname
== "[]" then
1537 v
.ret
(v
.new_expr
("{arguments[0]}[{arguments[1]}]", ret
.as(not null)))
1539 else if pname
== "[]=" then
1540 v
.add
("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1542 else if pname
== "copy_to" then
1543 v
.add
("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1545 else if pname
== "atoi" then
1546 v
.ret
(v
.new_expr
("atoi({arguments[0]});", ret
.as(not null)))
1549 else if cname
== "NativeArray" then
1550 v
.native_array_def
(pname
, ret
, arguments
)
1553 if pname
== "exit" then
1554 v
.add
("exit({arguments[1]});")
1556 else if pname
== "sys" then
1557 v
.ret
(v
.new_expr
("glob_sys", ret
.as(not null)))
1559 else if pname
== "calloc_string" then
1560 v
.ret
(v
.new_expr
("(char*)nit_alloc({arguments[1]})", ret
.as(not null)))
1562 else if pname
== "calloc_array" then
1563 v
.calloc_array
(ret
.as(not null), arguments
)
1565 else if pname
== "object_id" then
1566 v
.ret
(v
.new_expr
("(long){arguments.first}", ret
.as(not null)))
1568 else if pname
== "is_same_type" then
1569 v
.ret
(v
.is_same_type_test
(arguments
[0], arguments
[1]))
1571 else if pname
== "output_class_name" then
1572 var nat
= v
.class_name_string
(arguments
.first
)
1573 v
.add
("printf(\"%s\\n\
", {nat});")
1575 else if pname
== "native_class_name" then
1576 var nat
= v
.class_name_string
(arguments
.first
)
1577 v
.ret
(v
.new_expr
("(char*){nat}", ret
.as(not null)))
1579 else if pname
== "force_garbage_collection" then
1580 v
.add
("nit_gcollect();")
1582 else if pname
== "native_argc" then
1583 v
.ret
(v
.new_expr
("glob_argc", ret
.as(not null)))
1585 else if pname
== "native_argv" then
1586 v
.ret
(v
.new_expr
("glob_argv[{arguments[1]}]", ret
.as(not null)))
1589 v
.add
("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at
{location.to_s}\\n\
");")
1590 debug
("Not implemented {mpropdef}")
1594 redef class AExternMethPropdef
1595 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1598 var nextern
= self.n_extern
1599 if nextern
== null then
1600 v
.add
("fprintf(stderr, \"NOT YET IMPLEMENTED nitni
for {mpropdef} at
{location.to_s}\\n\
");")
1604 externname
= nextern
.text
.substring
(1, nextern
.text
.length-2
)
1605 if location
.file
!= null then
1606 var file
= location
.file
.filename
1609 var res
: nullable RuntimeVariable = null
1610 var ret
= mpropdef
.msignature
.return_mtype
1612 ret
= v
.resolve_for
(ret
, arguments
.first
)
1613 res
= v
.new_var
(ret
)
1615 v
.adapt_signature
(mpropdef
, arguments
)
1618 v
.add
("{externname}({arguments.join(", ")});")
1620 v
.add
("{res} = {externname}({arguments.join(", ")});")
1626 redef class AExternInitPropdef
1627 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1630 var nextern
= self.n_extern
1631 if nextern
== null then
1632 v
.add
("printf(\"NOT YET IMPLEMENTED nitni
for {mpropdef} at
{location.to_s}\\n\
");")
1636 externname
= nextern
.text
.substring
(1, nextern
.text
.length-2
)
1637 if location
.file
!= null then
1638 var file
= location
.file
.filename
1641 v
.adapt_signature
(mpropdef
, arguments
)
1642 var ret
= arguments
.first
.mtype
1643 var res
= v
.new_var
(ret
)
1647 v
.add
("{res} = {externname}({arguments.join(", ")});")
1652 redef class AAttrPropdef
1653 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1655 if arguments
.length
== 1 then
1656 var res
= v
.read_attribute
(self.mpropdef
.mproperty
, arguments
.first
)
1657 v
.assign
(v
.frame
.returnvar
.as(not null), res
)
1659 v
.write_attribute
(self.mpropdef
.mproperty
, arguments
.first
, arguments
[1])
1663 fun init_expr
(v
: AbstractCompilerVisitor, recv
: RuntimeVariable)
1665 var nexpr
= self.n_expr
1666 if nexpr
!= null then
1667 var oldnode
= v
.current_node
1668 v
.current_node
= self
1669 var old_frame
= v
.frame
1670 var frame
= new Frame(v
, self.mpropdef
.as(not null), recv
.mtype
.as(MClassType), [recv
])
1672 var value
= v
.expr
(nexpr
, self.mpropdef
.static_mtype
)
1673 v
.write_attribute
(self.mpropdef
.mproperty
, recv
, value
)
1675 v
.current_node
= oldnode
1679 fun check_expr
(v
: AbstractCompilerVisitor, recv
: RuntimeVariable)
1681 var nexpr
= self.n_expr
1682 if nexpr
!= null then return
1684 var oldnode
= v
.current_node
1685 v
.current_node
= self
1686 var old_frame
= v
.frame
1687 var frame
= new Frame(v
, self.mpropdef
.as(not null), recv
.mtype
.as(MClassType), [recv
])
1689 # Force read to check the initialization
1690 v
.read_attribute
(self.mpropdef
.mproperty
, recv
)
1692 v
.current_node
= oldnode
1696 redef class AClassdef
1697 private fun compile_to_c
(v
: AbstractCompilerVisitor, mpropdef
: MMethodDef, arguments
: Array[RuntimeVariable])
1699 if mpropdef
== self.mfree_init
then
1700 var super_inits
= self.super_inits
1701 if super_inits
!= null then
1702 assert arguments
.length
== 1
1703 for su
in super_inits
do
1704 v
.send
(su
, arguments
)
1708 var recv
= arguments
.first
1710 # Collect undefined attributes
1711 for npropdef
in self.n_propdefs
do
1712 if npropdef
isa AAttrPropdef and npropdef
.n_expr
== null then
1713 v
.write_attribute
(npropdef
.mpropdef
.mproperty
, recv
, arguments
[i
])
1723 redef class ADeferredMethPropdef
1724 redef fun compile_to_c
(v
, mpropdef
, arguments
) do v
.add_abort
("Deferred method called")
1725 redef fun can_inline
do return true
1729 # Try to compile self as an expression
1730 # Do not call this method directly, use `v.expr` instead
1731 private fun expr
(v
: AbstractCompilerVisitor): nullable RuntimeVariable
1733 v
.add
("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\
");")
1734 var mtype
= self.mtype
1735 if mtype
== null then
1738 var res
= v
.new_var
(mtype
)
1739 v
.add
("/* {res} = NOT YET {class_name} */")
1744 # Try to compile self as a statement
1745 # Do not call this method directly, use `v.stmt` instead
1746 private fun stmt
(v
: AbstractCompilerVisitor)
1749 if res
!= null then v
.add
("{res};")
1753 redef class ABlockExpr
1756 for e
in self.n_expr
do v
.stmt
(e
)
1760 var last
= self.n_expr
.last
1761 for e
in self.n_expr
do
1762 if e
== last
then break
1765 return v
.expr
(last
, null)
1769 redef class AVardeclExpr
1772 var variable
= self.variable
.as(not null)
1773 var ne
= self.n_expr
1775 var i
= v
.expr
(ne
, variable
.declared_type
)
1776 v
.assign
(v
.variable
(variable
), i
)
1781 redef class AVarExpr
1784 var res
= v
.variable
(self.variable
.as(not null))
1785 var mtype
= self.mtype
.as(not null)
1786 return v
.autoadapt
(res
, mtype
)
1790 redef class AVarAssignExpr
1793 var variable
= self.variable
.as(not null)
1794 var i
= v
.expr
(self.n_value
, variable
.declared_type
)
1795 v
.assign
(v
.variable
(variable
), i
)
1799 var variable
= self.variable
.as(not null)
1800 var i
= v
.expr
(self.n_value
, variable
.declared_type
)
1801 v
.assign
(v
.variable
(variable
), i
)
1806 redef class AVarReassignExpr
1809 var variable
= self.variable
.as(not null)
1810 var vari
= v
.variable
(variable
)
1811 var value
= v
.expr
(self.n_value
, variable
.declared_type
)
1812 var res
= v
.compile_callsite
(self.reassign_callsite
.as(not null), [vari
, value
])
1814 v
.assign
(v
.variable
(variable
), res
)
1818 redef class ASelfExpr
1819 redef fun expr
(v
) do return v
.frame
.arguments
.first
1822 redef class AContinueExpr
1823 redef fun stmt
(v
) do v
.add
("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
1826 redef class ABreakExpr
1827 redef fun stmt
(v
) do v
.add
("goto BREAK_{v.escapemark_name(self.escapemark)};")
1830 redef class AReturnExpr
1833 var nexpr
= self.n_expr
1834 if nexpr
!= null then
1835 var returnvar
= v
.frame
.returnvar
.as(not null)
1836 var i
= v
.expr
(nexpr
, returnvar
.mtype
)
1837 v
.assign
(returnvar
, i
)
1839 v
.add
("goto {v.frame.returnlabel.as(not null)};")
1843 redef class AAbortExpr
1844 redef fun stmt
(v
) do v
.add_abort
("Aborted")
1850 var cond
= v
.expr_bool
(self.n_expr
)
1851 v
.add
("if ({cond})\{")
1860 var res
= v
.new_var
(self.mtype
.as(not null))
1861 var cond
= v
.expr_bool
(self.n_expr
)
1862 v
.add
("if ({cond})\{")
1863 v
.assign
(res
, v
.expr
(self.n_then
.as(not null), null))
1865 v
.assign
(res
, v
.expr
(self.n_else
.as(not null), null))
1871 redef class AIfexprExpr
1874 var res
= v
.new_var
(self.mtype
.as(not null))
1875 var cond
= v
.expr_bool
(self.n_expr
)
1876 v
.add
("if ({cond})\{")
1877 v
.assign
(res
, v
.expr
(self.n_then
, null))
1879 v
.assign
(res
, v
.expr
(self.n_else
, null))
1888 v
.stmt
(self.n_block
)
1889 var escapemark
= self.escapemark
1890 if escapemark
!= null then
1891 v
.add
("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
1896 redef class AWhileExpr
1900 var cond
= v
.expr_bool
(self.n_expr
)
1901 v
.add
("if (!{cond}) break;")
1902 v
.stmt
(self.n_block
)
1903 v
.add
("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
1905 v
.add
("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
1909 redef class ALoopExpr
1913 v
.stmt
(self.n_block
)
1914 v
.add
("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
1916 v
.add
("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
1920 redef class AForExpr
1923 # Shortcut on explicit range
1924 # Avoid the instantiation of the range and the iterator
1925 var nexpr
= self.n_expr
1926 if self.variables
.length
== 1 and nexpr
isa AOrangeExpr and not v
.compiler
.modelbuilder
.toolcontext
.opt_no_shortcut_range
.value
then
1927 var from
= v
.expr
(nexpr
.n_expr
, null)
1928 var to
= v
.expr
(nexpr
.n_expr2
, null)
1929 var variable
= v
.variable
(variables
.first
)
1931 v
.assign
(variable
, from
)
1932 v
.add
("for(;;) \{ /* shortcut range */")
1934 var ok
= v
.send
(v
.get_property
("<", variable
.mtype
), [variable
, to
])
1936 v
.add
("if(!{ok}) break;")
1938 v
.stmt
(self.n_block
)
1940 v
.add
("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
1941 var succ
= v
.send
(v
.get_property
("succ", variable
.mtype
), [variable
])
1943 v
.assign
(variable
, succ
)
1945 v
.add
("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
1949 var cl
= v
.expr
(self.n_expr
, null)
1950 var it_meth
= self.method_iterator
1951 assert it_meth
!= null
1952 var it
= v
.send
(it_meth
, [cl
])
1955 var isok_meth
= self.method_is_ok
1956 assert isok_meth
!= null
1957 var ok
= v
.send
(isok_meth
, [it
])
1959 v
.add
("if(!{ok}) break;")
1960 if self.variables
.length
== 1 then
1961 var item_meth
= self.method_item
1962 assert item_meth
!= null
1963 var i
= v
.send
(item_meth
, [it
])
1965 v
.assign
(v
.variable
(variables
.first
), i
)
1966 else if self.variables
.length
== 2 then
1967 var key_meth
= self.method_key
1968 assert key_meth
!= null
1969 var i
= v
.send
(key_meth
, [it
])
1971 v
.assign
(v
.variable
(variables
[0]), i
)
1972 var item_meth
= self.method_item
1973 assert item_meth
!= null
1974 i
= v
.send
(item_meth
, [it
])
1976 v
.assign
(v
.variable
(variables
[1]), i
)
1980 v
.stmt
(self.n_block
)
1981 v
.add
("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
1982 var next_meth
= self.method_next
1983 assert next_meth
!= null
1984 v
.send
(next_meth
, [it
])
1986 v
.add
("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
1990 redef class AAssertExpr
1993 if v
.compiler
.modelbuilder
.toolcontext
.opt_no_check_assert
.value
then return
1995 var cond
= v
.expr_bool
(self.n_expr
)
1996 v
.add
("if (!{cond}) \{")
2000 v
.add_abort
("Assert '{nid.text}' failed")
2002 v
.add_abort
("Assert failed")
2011 var res
= v
.new_var
(self.mtype
.as(not null))
2012 var i1
= v
.expr_bool
(self.n_expr
)
2013 v
.add
("if ({i1}) \{")
2016 var i2
= v
.expr_bool
(self.n_expr2
)
2017 v
.add
("{res} = {i2};")
2023 redef class AImpliesExpr
2026 var res
= v
.new_var
(self.mtype
.as(not null))
2027 var i1
= v
.expr_bool
(self.n_expr
)
2028 v
.add
("if (!{i1}) \{")
2031 var i2
= v
.expr_bool
(self.n_expr2
)
2032 v
.add
("{res} = {i2};")
2038 redef class AAndExpr
2041 var res
= v
.new_var
(self.mtype
.as(not null))
2042 var i1
= v
.expr_bool
(self.n_expr
)
2043 v
.add
("if (!{i1}) \{")
2046 var i2
= v
.expr_bool
(self.n_expr2
)
2047 v
.add
("{res} = {i2};")
2053 redef class ANotExpr
2056 var cond
= v
.expr_bool
(self.n_expr
)
2057 return v
.new_expr
("!{cond}", self.mtype
.as(not null))
2061 redef class AOrElseExpr
2064 var res
= v
.new_var
(self.mtype
.as(not null))
2065 var i1
= v
.expr
(self.n_expr
, null)
2066 v
.add
("if ({i1}!=NULL) \{")
2069 var i2
= v
.expr
(self.n_expr2
, null)
2079 var value1
= v
.expr
(self.n_expr
, null)
2080 var value2
= v
.expr
(self.n_expr2
, null)
2081 return v
.equal_test
(value1
, value2
)
2085 redef class AIntExpr
2086 redef fun expr
(v
) do return v
.new_expr
("{self.value.to_s}", self.mtype
.as(not null))
2089 redef class AFloatExpr
2090 redef fun expr
(v
) do return v
.new_expr
("{self.n_float.text}", self.mtype
.as(not null)) # FIXME use value, not n_float
2093 redef class ACharExpr
2094 redef fun expr
(v
) do return v
.new_expr
("'{self.value.to_s.escape_to_c}'", self.mtype
.as(not null))
2097 redef class AArrayExpr
2100 var mtype
= self.mtype
.as(MClassType).arguments
.first
2101 var array
= new Array[RuntimeVariable]
2102 for nexpr
in self.n_exprs
.n_exprs
do
2103 var i
= v
.expr
(nexpr
, mtype
)
2106 return v
.array_instance
(array
, mtype
)
2110 redef class AStringFormExpr
2111 redef fun expr
(v
) do return v
.string_instance
(self.value
.as(not null))
2114 redef class ASuperstringExpr
2117 var array
= new Array[RuntimeVariable]
2118 for ne
in self.n_exprs
do
2119 if ne
isa AStringFormExpr and ne
.value
== "" then continue # skip empty sub-strings
2120 var i
= v
.expr
(ne
, null)
2123 var a
= v
.array_instance
(array
, v
.object_type
)
2124 var res
= v
.send
(v
.get_property
("to_s", a
.mtype
), [a
])
2129 redef class ACrangeExpr
2132 var i1
= v
.expr
(self.n_expr
, null)
2133 var i2
= v
.expr
(self.n_expr2
, null)
2134 var mtype
= self.mtype
.as(MClassType)
2135 var res
= v
.init_instance
(mtype
)
2136 var it
= v
.send
(v
.get_property
("init", res
.mtype
), [res
, i1
, i2
])
2137 v
.check_init_instance
(res
, mtype
)
2142 redef class AOrangeExpr
2145 var i1
= v
.expr
(self.n_expr
, null)
2146 var i2
= v
.expr
(self.n_expr2
, null)
2147 var mtype
= self.mtype
.as(MClassType)
2148 var res
= v
.init_instance
(mtype
)
2149 var it
= v
.send
(v
.get_property
("without_last", res
.mtype
), [res
, i1
, i2
])
2150 v
.check_init_instance
(res
, mtype
)
2155 redef class ATrueExpr
2156 redef fun expr
(v
) do return v
.new_expr
("1", self.mtype
.as(not null))
2159 redef class AFalseExpr
2160 redef fun expr
(v
) do return v
.new_expr
("0", self.mtype
.as(not null))
2163 redef class ANullExpr
2164 redef fun expr
(v
) do return v
.new_expr
("NULL", self.mtype
.as(not null))
2167 redef class AIsaExpr
2170 var i
= v
.expr
(self.n_expr
, null)
2171 return v
.type_test
(i
, self.cast_type
.as(not null), "isa")
2175 redef class AAsCastExpr
2178 var i
= v
.expr
(self.n_expr
, null)
2179 if v
.compiler
.modelbuilder
.toolcontext
.opt_no_check_assert
.value
then return i
2181 var cond
= v
.type_test
(i
, self.mtype
.as(not null), "as")
2182 v
.add
("if (!{cond}) \{")
2183 v
.add_abort
("Cast failed")
2189 redef class AAsNotnullExpr
2192 var i
= v
.expr
(self.n_expr
, null)
2193 if v
.compiler
.modelbuilder
.toolcontext
.opt_no_check_assert
.value
then return i
2195 v
.add
("if ({i} == NULL) \{")
2196 v
.add_abort
("Cast failed")
2202 redef class AParExpr
2203 redef fun expr
(v
) do return v
.expr
(self.n_expr
, null)
2206 redef class AOnceExpr
2209 var mtype
= self.mtype
.as(not null)
2210 var name
= v
.get_name
("varonce")
2211 var guard
= v
.get_name
(name
+ "_guard")
2212 v
.add_decl
("static {mtype.ctype} {name};")
2213 v
.add_decl
("static int {guard};")
2214 var res
= v
.new_var
(mtype
)
2215 v
.add
("if ({guard}) \{")
2216 v
.add
("{res} = {name};")
2218 var i
= v
.expr
(self.n_expr
, mtype
)
2219 v
.add
("{res} = {i};")
2220 v
.add
("{name} = {res};")
2221 v
.add
("{guard} = 1;")
2227 redef class ASendExpr
2230 var recv
= v
.expr
(self.n_expr
, null)
2232 for a
in self.raw_arguments
.as(not null) do
2233 args
.add
(v
.expr
(a
, null))
2235 return v
.compile_callsite
(self.callsite
.as(not null), args
)
2239 redef class ASendReassignFormExpr
2242 var recv
= v
.expr
(self.n_expr
, null)
2244 for a
in self.raw_arguments
.as(not null) do
2245 args
.add
(v
.expr
(a
, null))
2247 var value
= v
.expr
(self.n_value
, null)
2249 var left
= v
.compile_callsite
(self.callsite
.as(not null), args
)
2252 var res
= v
.compile_callsite
(self.reassign_callsite
.as(not null), [left
, value
])
2256 v
.compile_callsite
(self.write_callsite
.as(not null), args
)
2260 redef class ASuperExpr
2263 var recv
= v
.frame
.arguments
.first
2265 for a
in self.n_args
.n_exprs
do
2266 args
.add
(v
.expr
(a
, null))
2268 if args
.length
== 1 then
2269 args
= v
.frame
.arguments
2272 var mproperty
= self.mproperty
2273 if mproperty
!= null then
2274 if mproperty
.intro
.msignature
.arity
== 0 then
2278 var res
= v
.send
(mproperty
, args
)
2282 # stantard call-next-method
2283 return v
.supercall
(v
.frame
.mpropdef
.as(MMethodDef), recv
.mtype
.as(MClassType), args
)
2287 redef class ANewExpr
2290 var mtype
= self.mtype
.as(MClassType)
2292 var ctype
= mtype
.ctype
2293 if ctype
== "val*" then
2294 recv
= v
.init_instance
(mtype
)
2295 else if ctype
== "void*" then
2296 recv
= v
.new_expr
("NULL/*special!*/", mtype
)
2298 debug
("cannot new {mtype}")
2302 for a
in self.n_args
.n_exprs
do
2303 args
.add
(v
.expr
(a
, null))
2305 var res2
= v
.compile_callsite
(self.callsite
.as(not null), args
)
2306 if res2
!= null then
2307 #self.debug("got {res2} from {mproperty}. drop {recv}")
2310 v
.check_init_instance
(recv
, mtype
)
2315 redef class AAttrExpr
2318 var recv
= v
.expr
(self.n_expr
, null)
2319 var mproperty
= self.mproperty
.as(not null)
2320 return v
.read_attribute
(mproperty
, recv
)
2324 redef class AAttrAssignExpr
2327 var recv
= v
.expr
(self.n_expr
, null)
2328 var i
= v
.expr
(self.n_value
, null)
2329 var mproperty
= self.mproperty
.as(not null)
2330 v
.write_attribute
(mproperty
, recv
, i
)
2334 redef class AAttrReassignExpr
2337 var recv
= v
.expr
(self.n_expr
, null)
2338 var value
= v
.expr
(self.n_value
, null)
2339 var mproperty
= self.mproperty
.as(not null)
2340 var attr
= v
.read_attribute
(mproperty
, recv
)
2341 var res
= v
.compile_callsite
(self.reassign_callsite
.as(not null), [attr
, value
])
2343 v
.write_attribute
(mproperty
, recv
, res
)
2347 redef class AIssetAttrExpr
2350 var recv
= v
.expr
(self.n_expr
, null)
2351 var mproperty
= self.mproperty
.as(not null)
2352 return v
.isset_attribute
(mproperty
, recv
)
2356 redef class ADebugTypeExpr
2365 redef class Array[E
]
2366 # Return a new `Array` with the elements only contened in self and not in `o`
2367 fun -(o
: Array[E
]): Array[E
] do
2368 var res
= new Array[E
]
2369 for e
in self do if not o
.has
(e
) then res
.add
(e
)
2375 # All `MProperty` associated to all `MClassDef` of `mclass`
2376 fun properties
(mclass
: MClass): Set[MProperty] do
2377 if not self.properties_cache
.has_key
(mclass
) then
2378 var properties
= new HashSet[MProperty]
2379 var parents
= new Array[MClass]
2380 if self.flatten_mclass_hierarchy
.has
(mclass
) then
2381 parents
.add_all
(mclass
.in_hierarchy
(self).direct_greaters
)
2383 for parent
in parents
do
2384 properties
.add_all
(self.properties
(parent
))
2386 for mclassdef
in mclass
.mclassdefs
do
2387 for mprop
in mclassdef
.intro_mproperties
do
2388 properties
.add
(mprop
)
2391 self.properties_cache
[mclass
] = properties
2393 return properties_cache
[mclass
]
2395 private var properties_cache
: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]