private import annotation
import mixin
import counter
+import pkgconfig
+private import explain_assert_api
+import contracts
# Add compiling options
redef class ToolContext
var opt_output = new OptionString("Filename of the generated executable", "-o", "--output")
# --dir
var opt_dir = new OptionString("Output directory", "--dir")
+ # --run
+ var opt_run = new OptionBool("Execute the binary after the compilation", "--run")
# --no-cc
var opt_no_cc = new OptionBool("Do not invoke the C compiler", "--no-cc")
# --no-main
var opt_no_main = new OptionBool("Do not generate main entry point", "--no-main")
+ # --shared-lib
+ var opt_shared_lib = new OptionBool("Compile to a native shared library", "--shared-lib")
# --make-flags
var opt_make_flags = new OptionString("Additional options to the `make` command", "--make-flags")
# --max-c-lines
var opt_release = new OptionBool("Compile in release mode and finalize application", "--release")
# -g
var opt_debug = new OptionBool("Compile in debug mode (no C-side optimization)", "-g", "--debug")
+ # --trace
+ var opt_trace = new OptionBool("Compile with lttng's instrumentation", "--trace")
redef init
do
super
- self.option_context.add_option(self.opt_output, self.opt_dir, self.opt_no_cc, self.opt_no_main, self.opt_make_flags, self.opt_compile_dir, self.opt_hardening)
+ self.option_context.add_option(self.opt_output, self.opt_dir, self.opt_run, self.opt_no_cc, self.opt_no_main, self.opt_shared_lib, self.opt_make_flags, self.opt_compile_dir, self.opt_hardening)
self.option_context.add_option(self.opt_no_check_covariance, self.opt_no_check_attr_isset, self.opt_no_check_assert, self.opt_no_check_autocast, self.opt_no_check_null, self.opt_no_check_all)
self.option_context.add_option(self.opt_typing_test_metrics, self.opt_invocation_metrics, self.opt_isset_checks_metrics)
self.option_context.add_option(self.opt_no_stacktrace)
self.option_context.add_option(self.opt_release)
self.option_context.add_option(self.opt_max_c_lines, self.opt_group_c_files)
self.option_context.add_option(self.opt_debug)
+ self.option_context.add_option(self.opt_trace)
opt_no_main.hidden = true
+ opt_shared_lib.hidden = true
end
redef fun process_options(args)
var time1 = get_time
self.toolcontext.info("*** END WRITING C: {time1-time0} ***", 2)
+ toolcontext.check_errors
+
# Execute the Makefile
if self.toolcontext.opt_no_cc.value then return
sys.system("rm -r -- '{root_compile_dir.escape_to_sh}/'")
end
+ if toolcontext.opt_run.value then
+ var mainmodule = compiler.mainmodule
+ var out = outfile(mainmodule)
+ var cmd = ["."/out]
+ cmd.append toolcontext.option_context.rest
+ toolcontext.exec_and_check(cmd, "--run")
+ end
+
time1 = get_time
self.toolcontext.info("*** END COMPILING C: {time1-time0} ***", 2)
end
compiler.files_to_copy.add "{clib}/gc_chooser.c"
compiler.files_to_copy.add "{clib}/gc_chooser.h"
+ # Add lttng traces provider to external bodies
+ if toolcontext.opt_trace.value then
+ #-I. is there in order to make the TRACEPOINT_INCLUDE directive in clib/traces.h refer to the directory in which gcc was invoked.
+ var traces = new ExternCFile("traces.c", "-I.")
+ traces.pkgconfigs.add "lttng-ust"
+ compiler.extern_bodies.add(traces)
+ compiler.files_to_copy.add "{clib}/traces.c"
+ compiler.files_to_copy.add "{clib}/traces.h"
+ end
+
# FFI
for m in compiler.mainmodule.in_importation.greaters do
compiler.finalize_ffi_for_module(m)
end
var debug = toolcontext.opt_debug.value
- makefile.write("CC = ccache cc\nCXX = ccache c++\nCFLAGS = -g{ if not debug then " -O2 " else " "}-Wno-unused-value -Wno-switch -Wno-attributes -Wno-trigraphs\nCINCL =\nLDFLAGS ?= \nLDLIBS ?= -lm {linker_options.join(" ")}\n\n")
+ makefile.write """
+ifeq ($(origin CC), default)
+ CC = ccache cc
+endif
+ifeq ($(origin CXX), default)
+ CXX = ccache c++
+endif
+CFLAGS ?= -g {{{if not debug then "-O2" else ""}}} -Wno-unused-value -Wno-switch -Wno-attributes -Wno-trigraphs
+CINCL =
+LDFLAGS ?=
+LDLIBS ?= -lm {{{linker_options.join(" ")}}}
+\n"""
+
+ if self.toolcontext.opt_trace.value then makefile.write "LDLIBS += -llttng-ust -ldl\n"
+
+ if toolcontext.opt_shared_lib.value then
+ makefile.write """
+CFLAGS += -fPIC
+LDFLAGS += -shared -Wl,-soname,{{{outname}}}
+"""
+ end
makefile.write "\n# SPECIAL CONFIGURATION FLAGS\n"
if platform.supports_libunwind then
if toolcontext.opt_no_stacktrace.value then
- makefile.write "NO_STACKTRACE=True"
+ makefile.write "NO_STACKTRACE ?= True"
else
- makefile.write "NO_STACKTRACE= # Set to `True` to enable"
+ makefile.write "NO_STACKTRACE ?= # Set to `True` to enable"
end
end
LDLIBS := $(filter-out -lrt,$(LDLIBS))
endif
+# Special configuration for Windows under mingw64
+ifneq ($(findstring MINGW64,$(uname_S)),)
+ # Use the pcreposix regex library
+ LDLIBS += -lpcreposix
+
+ # Remove POSIX flag -lrt
+ LDLIBS := $(filter-out -lrt,$(LDLIBS))
+
+ # Silence warnings when storing Int, Char and Bool as pointer address
+ CFLAGS += -Wno-pointer-to-int-cast -Wno-int-to-pointer-cast
+endif
+
+# Add the compilation dir to the Java CLASSPATH
+ifeq ($(CLASSPATH),)
+ CLASSPATH := .
+else
+ CLASSPATH := $(CLASSPATH):.
+endif
+
"""
makefile.write("all: {outpath}\n")
f.close
end
- var java_files = new Array[ExternFile]
-
+ # pkg-config annotation support
var pkgconfigs = new Array[String]
for f in compiler.extern_bodies do
pkgconfigs.add_all f.pkgconfigs
end
- # Protect pkg-config
+
+ # Only test if pkg-config is used
if not pkgconfigs.is_empty then
+
+ # Check availability of pkg-config, silence the proc output
+ toolcontext.check_pkgconfig_packages pkgconfigs
+
+ # Double the check in the Makefile in case it's distributed
makefile.write """
# does pkg-config exists?
ifneq ($(shell which pkg-config >/dev/null; echo $$?), 0)
end
# Compile each required extern body into a specific .o
+ var java_files = new Array[ExternFile]
for f in compiler.extern_bodies do
var o = f.makefile_rule_name
- var ff = f.filename.basename
- makefile.write("{o}: {ff}\n")
+ makefile.write("{o}: {f.filename}\n")
makefile.write("\t{f.makefile_rule_content}\n\n")
dep_rules.add(f.makefile_rule_name)
end
makefile.write("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath.escape_to_sh} {ofiles.join(" ")} $(LDLIBS) {pkg}\n\n")
# Clean
- makefile.write("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n")
+ makefile.write("clean:\n\trm -f {ofiles.join(" ")} 2>/dev/null\n")
if outpath != real_outpath then
- makefile.write("\trm -- {outpath.escape_to_sh} 2>/dev/null\n")
+ makefile.write("\trm -f -- {outpath.escape_to_sh} 2>/dev/null\n")
end
makefile.close
self.toolcontext.info("Generated makefile: {makepath}", 2)
var res
if self.toolcontext.verbose_level >= 3 then
res = sys.system("{command} 2>&1")
+ else if is_windows then
+ res = sys.system("{command} 2>&1 >nul")
else
res = sys.system("{command} 2>&1 >/dev/null")
end
# The targeted specific platform
var target_platform: Platform is noinit
+ # All methods who already has a callref_thunk generated for
+ var compiled_callref_thunk = new HashSet[MMethodDef]
+
+ var all_routine_types_name: Set[String] do
+ var res = new HashSet[String]
+ for name in ["Fun", "Proc", "FunRef", "ProcRef"] do
+ # Currently there's 20 arity per func type
+ for i in [0..20[ do
+ res.add("{name}{i}")
+ end
+ end
+ return res
+ end
+
init
do
self.realmainmodule = mainmodule
# The list of all associated files
# Used to generate .c files
- var files = new List[CodeFile]
+ var files = new Array[CodeFile]
# Initialize a visitor specific for a compiler engine
fun new_visitor: VISITOR is abstract
stream.write("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
stream.close
- extern_bodies.add(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
+ extern_bodies.add(new ExternCFile("c_functions_hash.c", ""))
end
# Compile C headers
self.header.add_decl("#include <stdlib.h>")
self.header.add_decl("#include <stdio.h>")
self.header.add_decl("#include <string.h>")
+ # longjmp !
+ self.header.add_decl("#include <setjmp.h>\n")
self.header.add_decl("#include <sys/types.h>\n")
self.header.add_decl("#include <unistd.h>\n")
self.header.add_decl("#include <stdint.h>\n")
self.header.add_decl("#endif")
self.header.add_decl("#include <inttypes.h>\n")
self.header.add_decl("#include \"gc_chooser.h\"")
+ if modelbuilder.toolcontext.opt_trace.value then self.header.add_decl("#include \"traces.h\"")
self.header.add_decl("#ifdef __APPLE__")
+ self.header.add_decl(" #include <TargetConditionals.h>")
+ self.header.add_decl(" #include <syslog.h>")
self.header.add_decl(" #include <libkern/OSByteOrder.h>")
self.header.add_decl(" #define be32toh(x) OSSwapBigToHostInt32(x)")
self.header.add_decl("#endif")
- self.header.add_decl("#ifdef __pnacl__")
- self.header.add_decl(" #define be16toh(val) (((val) >> 8) | ((val) << 8))")
- self.header.add_decl(" #define be32toh(val) ((be16toh((val) << 16) | (be16toh((val) >> 16))))")
+ self.header.add_decl("#ifdef _WIN32")
+ self.header.add_decl(" #define be32toh(val) _byteswap_ulong(val)")
self.header.add_decl("#endif")
self.header.add_decl("#ifdef ANDROID")
self.header.add_decl(" #ifndef be32toh")
self.header.add_decl(" #endif")
self.header.add_decl(" #include <android/log.h>")
self.header.add_decl(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\", __VA_ARGS__)")
+ self.header.add_decl("#elif TARGET_OS_IPHONE")
+ self.header.add_decl(" #define PRINT_ERROR(...) syslog(LOG_ERR, __VA_ARGS__)")
self.header.add_decl("#else")
self.header.add_decl(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
self.header.add_decl("#endif")
compile_header_structs
compile_nitni_structs
+ compile_catch_stack
var gccd_disable = modelbuilder.toolcontext.opt_no_gcc_directive.value
if gccd_disable.has("noreturn") or gccd_disable.has("all") then
self.header.add_decl("extern val *glob_sys;")
end
+ # Stack stocking environment for longjumps
+ protected fun compile_catch_stack do
+ self.header.add_decl """
+struct catch_stack_t {
+ int cursor;
+ int currentSize;
+ jmp_buf *envs;
+};
+extern struct catch_stack_t *getCatchStack();
+"""
+ end
+
# Declaration of structures for live Nit types
protected fun compile_header_structs is abstract
v.add "\}"
end
+ # Hook to add specif piece of code before the the main C function.
+ #
+ # Is called by `compile_main_function`
+ fun compile_before_main(v: VISITOR)
+ do
+ end
+
+ # Hook to add specif piece of code at the begin on the main C function.
+ #
+ # Is called by `compile_main_function`
+ fun compile_begin_main(v: VISITOR)
+ do
+ end
+
# Generate the main C function.
#
# This function:
v.add_decl("char **glob_argv;")
v.add_decl("val *glob_sys;")
+ # Store catch stack in thread local storage
+ v.add_decl """
+#if defined(TARGET_OS_IPHONE)
+ // Use pthread_key_create and others for iOS
+ #include <pthread.h>
+
+ static pthread_key_t catch_stack_key;
+ static pthread_once_t catch_stack_key_created = PTHREAD_ONCE_INIT;
+
+ static void create_catch_stack()
+ {
+ pthread_key_create(&catch_stack_key, NULL);
+ }
+
+ struct catch_stack_t *getCatchStack()
+ {
+ pthread_once(&catch_stack_key_created, &create_catch_stack);
+ struct catch_stack_t *data = pthread_getspecific(catch_stack_key);
+ if (data == NULL) {
+ data = malloc(sizeof(struct catch_stack_t));
+ data->cursor = -1;
+ data->currentSize = 0;
+ data->envs = NULL;
+ pthread_setspecific(catch_stack_key, data);
+ }
+ return data;
+ }
+#else
+ // Use __thread when available
+ __thread struct catch_stack_t catchStack = {-1, 0, NULL};
+
+ struct catch_stack_t *getCatchStack()
+ {
+ return &catchStack;
+ }
+#endif
+"""
+
if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
for tag in count_type_test_tags do
v.add_decl("long count_type_test_resolved_{tag};")
v.add_decl("\}")
v.add_decl("void sig_handler(int signo)\{")
+ v.add_decl "#ifdef _WIN32"
+ v.add_decl "PRINT_ERROR(\"Caught signal : %s\\n\", signo);"
+ v.add_decl "#else"
v.add_decl("PRINT_ERROR(\"Caught signal : %s\\n\", strsignal(signo));")
+ v.add_decl "#endif"
v.add_decl("show_backtrace();")
# rethrows
v.add_decl("signal(signo, SIG_DFL);")
+ v.add_decl "#ifndef _WIN32"
v.add_decl("kill(getpid(), signo);")
+ v.add_decl "#endif"
v.add_decl("\}")
v.add_decl("void fatal_exit(int status) \{")
v.add_decl("exit(status);")
v.add_decl("\}")
+ compile_before_main(v)
+
if no_main then
v.add_decl("int nit_main(int argc, char** argv) \{")
else
v.add_decl("int main(int argc, char** argv) \{")
end
+ compile_begin_main(v)
+
v.add "#if !defined(__ANDROID__) && !defined(TARGET_OS_IPHONE)"
v.add("signal(SIGABRT, sig_handler);")
v.add("signal(SIGFPE, sig_handler);")
v.add("signal(SIGTERM, sig_handler);")
v.add("signal(SIGSEGV, sig_handler);")
v.add "#endif"
+ v.add "#ifndef _WIN32"
v.add("signal(SIGPIPE, SIG_IGN);")
+ v.add "#endif"
v.add("glob_argc = argc; glob_argv = argv;")
v.add("initialize_gc_option();")
fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
end
-# A file unit (may be more than one file if
-# A file unit aim to be autonomous and is made or one or more `CodeWriter`s
+# C code file generated from the `writers` and the `required_declarations`
+#
+# A file unit aims to be autonomous and is made or one or more `CodeWriter`s.
class CodeFile
+ # Basename of the file, will be appended by `.h` and `.c`
var name: String
+
+ # `CodeWriter` used in sequence to fill the top of the body, then the bottom
var writers = new Array[CodeWriter]
+
+ # Required declarations keys
+ #
+ # See: `provide_declaration`
var required_declarations = new HashSet[String]
end
-# Where to store generated lines
+# Store generated lines
+#
+# Instances are added to `file.writers` at construction.
class CodeWriter
+ # Parent `CodeFile`
var file: CodeFile
- var lines: List[String] = new List[String]
- var decl_lines: List[String] = new List[String]
- # Add a line in the main part of the generated C
+ # Main lines of code (written at the bottom of the body)
+ var lines = new Array[String]
+
+ # Lines of code for declarations (written at the top of the body)
+ var decl_lines = new Array[String]
+
+ # Add a line in the main lines of code (to `lines`)
fun add(s: String) do self.lines.add(s)
- # Add a line in the
- # (used for local or global declaration)
+ # Add a declaration line (to `decl_lines`)
+ #
+ # Used for local and global declaration.
fun add_decl(s: String) do self.decl_lines.add(s)
init
fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
- fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
-
fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]): Bool do return false
# Return an element of a native array.
# The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
fun native_array_set(native_array: RuntimeVariable, index: Int, value: RuntimeVariable) is abstract
+ # Instantiate a new routine pointer
+ fun routine_ref_instance(routine_mclass_type: MClassType, recv: RuntimeVariable, callsite: CallSite): RuntimeVariable is abstract
+
+ # Call the underlying referenced function
+ fun routine_ref_call(mmethoddef: MMethodDef, args: Array[RuntimeVariable]) is abstract
+
+ # Allocate `size` bytes with the low_level `nit_alloc` C function
+ #
+ # This method can be redefined to inject statistic or tracing code.
+ #
+ # `tag` if any, is used to mark the class of the allocated object.
+ fun nit_alloc(size: String, tag: nullable String): String
+ do
+ return "nit_alloc({size})"
+ end
+
# Evaluate `args` as expressions in the call of `mpropdef` on `recv`.
# This method is used to manage varargs in signatures and returns the real array
# of runtime variables to use in the call.
mtype = self.anchor(mtype)
var valmtype = value.mcasttype
+ # CPrimitive is the best you can do
+ if valmtype.is_c_primitive then
+ return value
+ end
+
# Do nothing if useless autocast
if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
return value
# Checks
# Can value be null? (according to current knowledge)
- fun maybenull(value: RuntimeVariable): Bool
+ fun maybe_null(value: RuntimeVariable): Bool
do
return value.mcasttype isa MNullableType or value.mcasttype isa MNullType
end
do
if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
- if maybenull(recv) then
+ if maybe_null(recv) then
self.add("if (unlikely({recv} == NULL)) \{")
self.add_abort("Receiver is null")
self.add("\}")
end
# Return a "const char*" variable associated to the classname of the dynamic type of an object
- # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
+ # NOTE: we do not return a `RuntimeVariable` "CString" as the class may not exist in the module/program
fun class_name_string(value: RuntimeVariable): String is abstract
# Variables handling
fun int8_instance(value: Int8): RuntimeVariable
do
var t = mmodule.int8_type
- var res = new RuntimeVariable("((int8_t){value.to_s})", t, t)
+ var res = new RuntimeVariable("INT8_C({value.to_s})", t, t)
return res
end
fun int16_instance(value: Int16): RuntimeVariable
do
var t = mmodule.int16_type
- var res = new RuntimeVariable("((int16_t){value.to_s})", t, t)
+ var res = new RuntimeVariable("INT16_C({value.to_s})", t, t)
return res
end
fun uint16_instance(value: UInt16): RuntimeVariable
do
var t = mmodule.uint16_type
- var res = new RuntimeVariable("((uint16_t){value.to_s})", t, t)
+ var res = new RuntimeVariable("UINT16_C({value.to_s})", t, t)
return res
end
fun int32_instance(value: Int32): RuntimeVariable
do
var t = mmodule.int32_type
- var res = new RuntimeVariable("((int32_t){value.to_s})", t, t)
+ var res = new RuntimeVariable("INT32_C({value.to_s})", t, t)
return res
end
fun uint32_instance(value: UInt32): RuntimeVariable
do
var t = mmodule.uint32_type
- var res = new RuntimeVariable("((uint32_t){value.to_s})", t, t)
+ var res = new RuntimeVariable("UINT32_C({value.to_s})", t, t)
return res
end
# Generate a float value
#
# FIXME pass a Float, not a string
- fun float_instance(value: String): RuntimeVariable
+ fun float_instance(value: Float): RuntimeVariable
do
var t = mmodule.float_type
- var res = new RuntimeVariable("{value}", t, t)
+ var res = new RuntimeVariable("{value.to_hexa_exponential_notation}", t, t)
return res
end
return res
end
+ # Generates a CString instance fully escaped in C-style \xHH fashion
+ fun c_string_instance(ns: CString, len: Int): RuntimeVariable do
+ var mtype = mmodule.c_string_type
+ var nat = new_var(mtype)
+ var byte_esc = new Buffer.with_cap(len * 4)
+ for i in [0 .. len[ do
+ byte_esc.append("\\x{ns[i].to_hex}")
+ end
+ self.add("{nat} = \"{byte_esc}\";")
+ return nat
+ end
+
# Generate a string value
fun string_instance(string: String): RuntimeVariable
do
self.add("if (likely({name}!=NULL)) \{")
self.add("{res} = {name};")
self.add("\} else \{")
- var native_mtype = mmodule.native_string_type
+ var native_mtype = mmodule.c_string_type
var nat = self.new_var(native_mtype)
self.add("{nat} = \"{string.escape_to_c}\";")
- var bytelen = self.int_instance(string.bytelen)
+ var byte_length = self.int_instance(string.byte_length)
var unilen = self.int_instance(string.length)
- self.add("{res} = {self.send(self.get_property("to_s_full", native_mtype), [nat, bytelen, unilen]).as(not null)};")
+ self.add("{res} = {self.send(self.get_property("to_s_unsafe", native_mtype), [nat, byte_length, unilen, value_instance(false), value_instance(false)]).as(not null)};")
self.add("{name} = {res};")
self.add("\}")
return res
# used by aborts, asserts, casts, etc.
fun add_abort(message: String)
do
+ add_raw_throw
self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
add_raw_abort
end
+ # Generate a long jump if there is a catch block.
+ #
+ # This method should be called before the error messages and before a `add_raw_abort`.
+ fun add_raw_throw
+ do
+ self.add("\{")
+ self.add("struct catch_stack_t *catchStack = getCatchStack();")
+ self.add("if(catchStack->cursor >= 0)\{")
+ self.add(" longjmp(catchStack->envs[catchStack->cursor], 1);")
+ self.add("\}")
+ self.add("\}")
+ end
+
+ # Generate abort without a message.
+ #
+ # Used when one need a more complex message.
+ # Do not forget to call `add_raw_abort` before the display of a custom user message.
fun add_raw_abort
do
- if self.current_node != null and self.current_node.location.file != null and
- self.current_node.location.file.mmodule != null then
+ var current_node = self.current_node
+ if current_node != null and current_node.location.file != null and
+ current_node.location.file.mmodule != null then
var f = "FILE_{self.current_node.location.file.mmodule.c_name}"
self.require_declaration(f)
self.add("PRINT_ERROR(\" (%s:%d)\\n\", {f}, {current_node.location.line_start});")
do
var res = self.type_test(value, mtype, tag)
self.add("if (unlikely(!{res})) \{")
+ self.add_raw_throw
var cn = self.class_name_string(value)
self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s`, got `%s`\", \"{mtype.to_s.escape_to_c}\", {cn});")
self.add_raw_abort
end
# A C function associated to a Nit method
-# Because of customization, a given Nit method can be compiler more that once
+# This is the base class for all runtime representation of a nit method.
+# It implements the Template Design Pattern whose steps are :
+# 1. create the receiver `RuntimeVariable` (selfvar)
+# 2. create a `StaticFrame`
+# 3. resolve the return type.
+# 4. write the function signature
+# 5. Declare the function signature (for C header files)
+# 6. writer the function body
+# 7. post-compiler hook (optional)
+# Each step is called in `AbstractRuntimeFunction::compile_to_c`. A default
+# body is provided foreach step except for compilation hooks. Subclasses may
+# redefine any of the above mentioned steps. However, it's not recommanded
+# to override `compile_to_c` since there's an ordering of the compilation steps.
+# Any information between steps must be saved in the visitor. Currently most
+# of the future runtime info are stored in the `StaticFrame` of the visitor,
+# e.g. the receiver (selfvar), the arguments, etc.
+#
+# Moreover, any subclass may redefine : the receiver type, the return type and
+# the signature. This allow for a better customization for the final implementation.
+# Because of customization, a given Nit method can be compile more that once.
abstract class AbstractRuntimeFunction
type COMPILER: AbstractCompiler
# The associated Nit method
var mmethoddef: MMethodDef
+ protected var return_mtype: nullable MType = null
+
# The mangled c name of the runtime_function
# Subclasses should redefine `build_c_name` instead
fun c_name: String
return res
end
+ fun c_ref: String do return "&{c_name}"
+
# Non cached version of `c_name`
protected fun build_c_name: String is abstract
# May inline the body or generate a C function call
fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
- # Generate the code for the `AbstractRuntimeFunction`
- # Warning: compile more than once compilation makes CC unhappy
- fun compile_to_c(compiler: COMPILER) is abstract
+ # Returns `true` if the associated `mmethoddef`'s return type isn't null,
+ # otherwise `false`.
+ fun has_return: Bool
+ do
+ return mmethoddef.msignature.return_mtype != null
+ end
+
+ # The current msignature to use when compiling : `signature_to_c` and `body_to_c`.
+ # This method is useful since most concrete implementation doesn't use the
+ # mmethoddef's signature. By providing a definition in the abstract class,
+ # subclasses can use any msignature.
+ fun msignature: MSignature
+ do
+ return mmethoddef.msignature.as(not null)
+ end
+
+ # The current receiver type to compile : `signature_to_c` and `body_to_c`.
+ # See `msignature` method for more information.
+ protected fun recv_mtype: MType
+ do
+ return mmethoddef.mclassdef.bound_mtype
+ end
+
+ # Prepare the `self` runtime variable to be used by the rest of
+ # compilation steps.
+ # Step 1
+ protected fun resolve_receiver(v: VISITOR): RuntimeVariable
+ do
+ var casttype = mmethoddef.mclassdef.bound_mtype
+ return new RuntimeVariable("self", recv_mtype, casttype)
+ end
+
+ # Builds the static frame for current runtime method
+ # Step 2
+ protected fun build_frame(v: VISITOR, arguments: Array[RuntimeVariable]): StaticFrame
+ do
+ return new StaticFrame(v, mmethoddef, recv_mtype.as(MClassType), arguments)
+ end
+
+ # Step 3 : Returns the return type used by the runtime function.
+ protected fun resolve_return_mtype(v: VISITOR)
+ do
+ return_mtype = msignature.return_mtype
+ end
+
+ # Fills the argument array inside v.frame.arguments, calling `resolve_ith_parameter`
+ # for each parameter.
+ private fun fill_parameters(v: VISITOR)
+ do
+ assert v.frame != null
+ for i in [0..msignature.arity[ do
+ var arg = resolve_ith_parameter(v, i)
+ v.frame.arguments.add(arg)
+ end
+ end
+
+ # Step 4 : Creates `RuntimeVariable` for each method argument.
+ protected fun resolve_ith_parameter(v: VISITOR, i: Int): RuntimeVariable
+ do
+ var mp = msignature.mparameters[i]
+ var mtype = mp.mtype
+ if mp.is_vararg then
+ mtype = v.mmodule.array_type(mtype)
+ end
+ return new RuntimeVariable("p{i}", mtype, mtype)
+ end
+
+ # Generate the code for the signature with an open curly brace
+ #
+ # Returns the generated signature without a semicolon and curly brace,
+ # e.g `RES f(T0 p0, T1 p1, ..., TN pN)`
+ # Step 5
+ protected fun signature_to_c(v: VISITOR): String
+ do
+ assert v.frame != null
+ var arguments = v.frame.arguments
+ var comment = new FlatBuffer
+ var selfvar = v.frame.selfvar
+ var c_ret = "void"
+ if has_return then
+ c_ret = "{return_mtype.ctype}"
+ end
+ var sig = new FlatBuffer
+ sig.append("{c_ret} {c_name}({recv_mtype.ctype} self")
+ comment.append("({selfvar}: {selfvar.mtype}")
+
+ for i in [0..arguments.length-1[ do
+ # Skip the receiver
+ var arg = arguments[i+1]
+ comment.append(", {arg.mtype}")
+ sig.append(", {arg.mtype.ctype} p{i}")
+ end
+ sig.append(")")
+ comment.append(")")
+ if has_return then
+ comment.append(": {return_mtype.as(not null)}")
+ end
+ v.add_decl("/* method {self} for {comment} */")
+ v.add_decl("{sig} \{")
+ return sig.to_s
+ end
+
+ # How the concrete compiler will declare the method, e.g inside a global header file,
+ # extern signature, etc.
+ # Step 6
+ protected fun declare_signature(v: VISITOR, signature: String) is abstract
+
+ # Generate the code for the body without return statement at the end and
+ # no curly brace.
+ # Step 7
+ protected fun body_to_c(v: VISITOR)
+ do
+ mmethoddef.compile_inside_to_c(v, v.frame.arguments)
+ end
+
+ # Hook called at the end of `compile_to_c` function. This function
+ # is useful if you need to register any function compiled to c.
+ # Step 8 (optional).
+ protected fun end_compile_to_c(v: VISITOR)
+ do
+ # Nothing to do by default
+ end
+
+ # Generate the code
+ fun compile_to_c(compiler: COMPILER)
+ do
+ var v = compiler.new_visitor
+ var selfvar = resolve_receiver(v)
+ var arguments = [selfvar]
+ var frame = build_frame(v, arguments)
+ v.frame = frame
+
+ resolve_return_mtype(v)
+ fill_parameters(v)
+
+ # WARNING: the signature must be declared before creating
+ # any returnlabel and returnvar (`StaticFrame`). Otherwise,
+ # you could end up with variable outside the function.
+ var sig = signature_to_c(v)
+ declare_signature(v, sig)
+
+ frame.returnlabel = v.get_name("RET_LABEL")
+ if has_return then
+ var ret_mtype = return_mtype
+ assert ret_mtype != null
+ frame.returnvar = v.new_var(ret_mtype)
+ end
+
+ body_to_c(v)
+ v.add("{frame.returnlabel.as(not null)}:;")
+ if has_return then
+ v.add("return {frame.returnvar.as(not null)};")
+ end
+ v.add "\}"
+ end_compile_to_c(v)
+ end
+end
+
+# Base class for all thunk-like function. A thunk is a function whose purpose
+# is to call another function. Like a class wrapper or decorator, a thunk is used
+# to computer things (conversions, log, etc) before or after a function call. It's
+# an intermediary between the caller and the callee.
+#
+# The most basic use of a thunk is to unbox its argument before invoking the real callee.
+# Virtual functions are a use case of thunk function:
+#
+# ~~~~nitish
+# redef class Object
+# fun toto(x: Int): Int do return 1 + x
+# end
+# redef class Int
+# redef fun toto(x) do return x + self
+# end
+#
+# ```generated C code
+# long Object__toto(val* self, long x) { return 1 + x }
+# long Int__toto(long self, long x) { return x + self }
+# long THUNK_Int__toto(val* self, long x) {
+# long self2 = (long)(self)>>2 // Unboxing from Object to Int
+# return Int_toto(self2, x)
+# }
+#
+# ```
+# ~~~~
+#
+# A thunk has its OWN SIGNATURE and is considered like any other `AbstractRuntimeFunction`.
+# Thus, one might need to be careful when overriding parent's method. Since most usage of
+# thunks in Nit is to unbox and box things between a caller and a callee, the default
+# implementation is doing just that. In other words, a thunk takes a signature and a method
+# and tries to cast its signature to the underlying method's signature.
+#
+# A virtual function has the same signature as its `mmethoddef` field, except for
+# its receiver is of type `Object`.
+# In the same vibe, a call reference has all of its argument boxed as `Object`.
+abstract class ThunkFunction
+ super AbstractRuntimeFunction
+
+ # Determines if the callsite should be polymorphic or static.
+ var polymorph_call_flag = false is writable
+
+ # The type expected by the callee. Used to resolve `mmethoddef`'s formal
+ # parameters and virtual type. This type must NOT need anchor.
+ fun target_recv: MType is abstract
+
+ redef fun body_to_c(v)
+ do
+ assert not target_recv.need_anchor
+ var frame = v.frame
+ assert frame != null
+ var selfvar = frame.selfvar
+ var arguments = frame.arguments
+ var arguments2 = new Array[RuntimeVariable]
+ arguments2.push(v.autobox(selfvar, target_recv))
+ var resolved_sig = msignature.resolve_for(target_recv, target_recv.as(MClassType), v.mmodule, true)
+ for i in [0..resolved_sig.arity[ do
+ var param = resolved_sig.mparameters[i]
+ var mtype = param.mtype
+ if param.is_vararg then
+ mtype = v.mmodule.array_type(mtype)
+ end
+ var temp = v.autobox(arguments[i+1], mtype)
+ arguments2.push(temp)
+ end
+ v.add("/* {mmethoddef}, {recv_mtype.ctype} */")
+ var subret: nullable RuntimeVariable = null
+ if polymorph_call_flag then
+ subret = v.send(mmethoddef.mproperty, arguments2)
+ else
+ subret = v.call(mmethoddef, arguments2[0].mcasttype.as(MClassType), arguments2)
+ end
+ if has_return then
+ assert subret != null
+ var subret2 = v.autobox(subret, return_mtype.as(not null))
+ v.assign(frame.returnvar.as(not null), subret2)
+ end
+
+ end
+
end
# A runtime variable hold a runtime value in C.
# The array comprehension currently filled, if any
private var comprehension: nullable RuntimeVariable = null
+
+ # Returns the first argument (the receiver) of a frame.
+ # REQUIRE: arguments.length >= 1
+ fun selfvar: RuntimeVariable
+ do
+ assert arguments.length >= 1
+ return arguments.first
+ end
end
redef class MType
return "int32_t"
else if mclass.name == "UInt32" then
return "uint32_t"
- else if mclass.name == "NativeString" then
+ else if mclass.name == "CString" then
return "char*"
else if mclass.name == "NativeArray" then
return "val*"
return "i32"
else if mclass.name == "UInt32" then
return "u32"
- else if mclass.name == "NativeString" then
+ else if mclass.name == "CString" then
return "str"
else if mclass.name == "NativeArray" then
#return "{self.arguments.first.ctype}*"
var node = modelbuilder.mpropdef2node(self)
if is_abstract then
+ v.add_raw_throw
var cn = v.class_name_string(arguments.first)
v.current_node = node
v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s` called on `%s`\", \"{mproperty.name.escape_to_c}\", {cn});")
end
# We have a problem
+ v.add_raw_throw
var cn = v.class_name_string(arguments.first)
v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s` called on `%s`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
v.add_raw_abort
var pname = mpropdef.mproperty.name
var cname = mpropdef.mclassdef.mclass.name
var ret = mpropdef.msignature.return_mtype
- if ret != null then
+ var compiler = v.compiler
+
+ # WARNING: we must not resolve the return type when it's a functional type.
+ # Otherwise, we get a compile error exactly here. Moreover, `routine_ref_call`
+ # already handles the return type. NOTE: this warning only apply when compiling
+ # in `semi-global`.
+ if ret != null and not compiler.all_routine_types_name.has(cname) then
ret = v.resolve_for(ret, arguments.first)
end
+
if pname != "==" and pname != "!=" then
v.adapt_signature(mpropdef, arguments)
v.unbox_signature_extern(mpropdef, arguments)
v.ret(v.new_expr("(uint32_t){arguments[0]}", ret.as(not null)))
return true
end
- else if cname == "NativeString" then
+ else if cname == "CString" then
if pname == "[]" then
v.ret(v.new_expr("(unsigned char)((int){arguments[0]}[{arguments[1]}])", ret.as(not null)))
return true
v.ret(v.new_expr("!{res}", ret.as(not null)))
return true
else if pname == "new" then
- v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
+ var alloc = v.nit_alloc(arguments[1].to_s, "CString")
+ v.ret(v.new_expr("(char*){alloc}", ret.as(not null)))
return true
else if pname == "fetch_4_chars" then
- v.ret(v.new_expr("(long)*((uint32_t*)({arguments[0]} + {arguments[1]}))", ret.as(not null)))
+ v.ret(v.new_expr("*((uint32_t*)({arguments[0]} + {arguments[1]}))", ret.as(not null)))
return true
else if pname == "fetch_4_hchars" then
- v.ret(v.new_expr("(long)be32toh(*((uint32_t*)({arguments[0]} + {arguments[1]})))", ret.as(not null)))
+ v.ret(v.new_expr("(uint32_t)be32toh(*((uint32_t*)({arguments[0]} + {arguments[1]})))", ret.as(not null)))
return true
end
else if cname == "NativeArray" then
v.ret(v.new_expr("~{arguments[0]}", ret.as(not null)))
return true
end
+ else if compiler.all_routine_types_name.has(cname) then
+ v.routine_ref_call(mpropdef, arguments)
+ return true
end
if pname == "exit" then
- v.add("exit({arguments[1]});")
+ v.add("exit((int){arguments[1]});")
return true
else if pname == "sys" then
v.ret(v.new_expr("glob_sys", ret.as(not null)))
return true
- else if pname == "calloc_string" then
- v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
- return true
- else if pname == "calloc_array" then
- v.calloc_array(ret.as(not null), arguments)
- return true
else if pname == "object_id" then
v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
return true
assert arguments.length == 2
var recv = arguments.first
var arg = arguments[1]
- if is_optional and v.maybenull(arg) then
+ if is_optional and v.maybe_null(arg) then
var value = v.new_var(self.mpropdef.static_mtype.as(not null))
v.add("if ({arg} == NULL) \{")
v.assign(value, evaluate_expr(v, recv))
fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
do
- if has_value and not is_lazy and not n_expr isa ANullExpr then evaluate_expr(v, recv)
+ if has_value and not is_lazy and not is_optional and not n_expr isa ANullExpr then evaluate_expr(v, recv)
end
# Evaluate, store and return the default value of the attribute
v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
end
return
- else if mclassdef.auto_init == mpropdef then
+ else if mclassdef.default_init == mpropdef then
var recv = arguments.first
var initializers = mpropdef.initializers
var no_init = false
- if not initializers.is_empty then
-
+ if not initializers.is_empty and not mpropdef.is_old_style_init then
var i = 1
for p in initializers do
if p isa MMethod then
redef class ADoExpr
redef fun stmt(v)
do
- v.stmt(self.n_block)
- v.add_escape_label(break_mark)
+ if self.n_catch != null then
+ v.add("\{")
+ v.add("struct catch_stack_t *catchStack = getCatchStack();")
+ v.add("if(catchStack->currentSize == 0) \{")
+ v.add(" catchStack->cursor = -1;")
+ v.add(" catchStack->currentSize = 100;")
+ v.add(" catchStack->envs = malloc(sizeof(jmp_buf)*100);")
+ v.add("\} else if(catchStack->cursor == catchStack->currentSize - 1) \{")
+ v.add(" catchStack->currentSize *= 2;")
+ v.add(" catchStack->envs = realloc(catchStack->envs, sizeof(jmp_buf)*catchStack->currentSize);")
+ v.add("\}")
+ v.add("catchStack->cursor += 1;")
+ v.add("if(!setjmp(catchStack->envs[catchStack->cursor]))\{")
+ v.stmt(self.n_block)
+ v.add("catchStack->cursor -= 1;")
+ v.add("\}else \{")
+ v.add("catchStack->cursor -= 1;")
+ v.stmt(self.n_catch)
+ v.add("\}")
+ v.add("\}")
+ else
+ v.stmt(self.n_block)
+ end
+ v.add_escape_label(break_mark)
end
end
var cond = v.expr_bool(self.n_expr)
v.add("if (unlikely(!{cond})) \{")
v.stmt(self.n_else)
+
+ explain_assert v
+
var nid = self.n_id
if nid != null then
v.add_abort("Assert '{nid.text}' failed")
end
v.add("\}")
end
+
+ # Explain assert if it fails
+ private fun explain_assert(v: AbstractCompilerVisitor)
+ do
+ var explain_assert_str = explain_assert_str
+ if explain_assert_str == null then return
+
+ var nas = v.compiler.modelbuilder.model.get_mclasses_by_name("NativeArray")
+ if nas == null then return
+
+ nas = v.compiler.modelbuilder.model.get_mclasses_by_name("Array")
+ if nas == null or nas.is_empty then return
+
+ var expr = explain_assert_str.expr(v)
+ if expr == null then return
+
+ var cstr = v.send(v.get_property("to_cstring", expr.mtype), [expr])
+ if cstr == null then return
+
+ v.add "PRINT_ERROR(\"Runtime assert: %s\\n\", {cstr});"
+ end
end
redef class AOrExpr
var res = v.new_var(self.mtype.as(not null))
var i1 = v.expr(self.n_expr, null)
- if not v.maybenull(i1) then return i1
+ if not v.maybe_null(i1) then return i1
v.add("if ({i1}!=NULL) \{")
v.assign(res, i1)
end
redef class AFloatExpr
- redef fun expr(v) do return v.float_instance("{self.n_float.text}") # FIXME use value, not n_float
+ redef fun expr(v) do return v.float_instance(self.value.as(Float))
end
redef class ACharExpr
redef fun expr(v) do
- if is_ascii then return v.byte_instance(value.as(not null).ascii)
- if is_code_point then return v.int_instance(value.as(not null).code_point)
+ if is_code_point then
+ return v.int_instance(value.as(not null).code_point)
+ end
return v.char_instance(self.value.as(not null))
end
end
end
end
+redef class AugmentedStringFormExpr
+ # Factorize the making of a `Regex` object from a literal prefixed string
+ protected fun make_re(v: AbstractCompilerVisitor, rs: RuntimeVariable): nullable RuntimeVariable do
+ var re = to_re
+ assert re != null
+ var res = v.compile_callsite(re, [rs])
+ if res == null then
+ print "Cannot call property `to_re` on {self}"
+ abort
+ end
+ for i in suffix.chars do
+ if i == 'i' then
+ var ign = ignore_case
+ assert ign != null
+ v.compile_callsite(ign, [res, v.bool_instance(true)])
+ continue
+ end
+ if i == 'm' then
+ var nl = newline
+ assert nl != null
+ v.compile_callsite(nl, [res, v.bool_instance(true)])
+ continue
+ end
+ if i == 'b' then
+ var ext = extended
+ assert ext != null
+ v.compile_callsite(ext, [res, v.bool_instance(false)])
+ continue
+ end
+ # Should not happen, this needs to be updated
+ # along with the addition of new suffixes
+ abort
+ end
+ return res
+ end
+end
+
redef class AStringFormExpr
- redef fun expr(v) do return v.string_instance(self.value.as(not null))
+ redef fun expr(v) do return v.string_instance(value)
+end
+
+redef class AStringExpr
+ redef fun expr(v) do
+ var s = v.string_instance(value)
+ if is_string then return s
+ if is_bytestring then
+ var ns = v.c_string_instance(bytes.items, bytes.length)
+ var ln = v.int_instance(bytes.length)
+ var cs = to_bytes_with_copy
+ assert cs != null
+ var res = v.compile_callsite(cs, [ns, ln])
+ assert res != null
+ s = res
+ else if is_re then
+ var res = make_re(v, s)
+ assert res != null
+ s = res
+ else
+ print "Unimplemented prefix or suffix for {self}"
+ abort
+ end
+ return s
+ end
end
redef class ASuperstringExpr
redef fun expr(v)
do
- var type_string = mtype.as(not null)
+ var type_string = v.mmodule.string_type
# Collect elements of the superstring
var array = new Array[AExpr]
v.native_array_set(a, i, e)
end
- # Fast join the native string to get the result
+ # Fast join the C string to get the result
var res = v.send(v.get_property("native_to_s", a.mtype), [a])
+ assert res != null
+
+ if is_re then res = make_re(v, res)
# We finish to work with the native array,
# so store it so that it can be reused
v.add("{varonce} = {a};")
+
return res
end
end
var i = v.expr(self.n_expr, null)
if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
- if not v.maybenull(i) then return i
+ if not v.maybe_null(i) then return i
v.add("if (unlikely({i} == NULL)) \{")
v.add_abort("Cast failed")
redef fun expr(v)
do
var recv = v.expr(self.n_expr, null)
+ if is_safe then
+ v.add "if ({recv}!=NULL) \{"
+ end
var callsite = self.callsite.as(not null)
if callsite.is_broken then return null
var args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.raw_arguments)
- return v.compile_callsite(callsite, args)
+ var res = v.compile_callsite(callsite, args)
+ if is_safe then
+ if res != null then
+ # `callsite.mpropdef` may reference a method whose
+ # return type is a primitive type in C. If it is
+ # the case, we must convert the primitive type to
+ # a `val*` to support nullable assignment.
+ # Autobox's job is to convert primitive type to
+ # nullable type, eg from `Int` to `nullable `Int`.
+ # The target type reside in `self.mtype`.
+ var original_res = v.autobox(res, self.mtype.as(not null))
+
+ # Here we must create a new_var in case the original
+ # type is not nullable. We can't call `autobox` to
+ # convert a complex type to its nullable version.
+ # eg if we have a type `A`, calling autobox like
+ # `autobox(A, nullable A)` will return `A` since
+ # `A` and `nullable A` have the same primitive
+ # type. The nullable qualifier is only used at
+ # compile time to add appropriate null checks.
+ res = v.new_var(self.mtype.as(not null))
+ v.add("{res} = {original_res};")
+ v.add("\} else \{")
+ v.add("{res} = NULL;")
+ end
+ v.add("\}")
+ end
+ return res
+ end
+end
+
+redef class ACallrefExpr
+ redef fun expr(v)
+ do
+ var recv = v.expr(self.n_expr, null)
+ var res = v.routine_ref_instance(mtype.as(MClassType), recv, callsite.as(not null))
+ return res
end
end
return v.native_array_instance(elttype, l)
end
- var recv = v.init_instance_or_extern(mtype)
-
var callsite = self.callsite
- if callsite == null then return recv
+ if callsite == null then return v.init_instance_or_extern(mtype)
if callsite.is_broken then return null
+ var recv
+ # new factories are badly implemented.
+ # They assume a stub temporary receiver exists.
+ # This temporary receiver is required because it
+ # currently holds the method and the formal types.
+ #
+ # However, this object could be reused if the formal types are the same.
+ # Therefore, the following code will `once` it in these case
+ if callsite.mproperty.is_new and not mtype.need_anchor then
+ var name = v.get_name("varoncenew")
+ var guard = v.get_name(name + "_guard")
+ v.add_decl("static {mtype.ctype} {name};")
+ v.add_decl("static int {guard};")
+ recv = v.new_var(mtype)
+ v.add("if (likely({guard})) \{")
+ v.add("{recv} = {name};")
+ v.add("\} else \{")
+ var i = v.init_instance_or_extern(mtype)
+ v.add("{recv} = {i};")
+ v.add("{name} = {recv};")
+ v.add("{guard} = 1;")
+ v.add("\}")
+ else
+ recv = v.init_instance_or_extern(mtype)
+ end
+
var args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.n_args.n_exprs)
var res2 = v.compile_callsite(callsite, args)
if res2 != null then
end
end
+redef class ASafeExpr
+ redef fun expr(v)
+ do
+ return v.expr(self.n_expr, null)
+ end
+end
+
redef class ANamedargExpr
redef fun expr(v)
do
var modelbuilder = new ModelBuilder(model, toolcontext)
var arguments = toolcontext.option_context.rest
+if toolcontext.opt_run.value then
+ # When --run, only the first is the program, the rest is the run arguments
+ arguments = [toolcontext.option_context.rest.shift]
+end
if arguments.length > 1 and toolcontext.opt_output.value != null then
print "Option Error: --output needs a single source file. Do you prefer --dir?"
exit 1
nitlanguage / nit.git / blobdiff