# --hardening
var opt_hardening: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
+ # --no-check-covariance
+ var opt_no_check_covariance: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
+
+ # --no-check-initialization
+ var opt_no_check_initialization: OptionBool = new OptionBool("Disable isset tests at the end of constructors (dangerous)", "--no-check-initialization")
+
+ # --no-check-assert
+ var opt_no_check_assert: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
+
+ # --no-check-other
+ var opt_no_check_other: OptionBool = new OptionBool("Disable implicit tests: unset attribute, null receiver (dangerous)", "--no-check-other")
+
redef init
do
super
self.option_context.add_option(self.opt_output, self.opt_no_cc, self.opt_hardening)
+ self.option_context.add_option(self.opt_no_check_covariance, self.opt_no_check_initialization, self.opt_no_check_assert, self.opt_no_check_other)
end
end
self.toolcontext.info("*** COMPILING TO C ***", 1)
var compiler = new GlobalCompiler(mainmodule, runtime_type_analysis, self)
- var v = new GlobalCompilerVisitor(compiler)
+ var v = compiler.new_visitor
v.add_decl("#include <stdlib.h>")
v.add_decl("#include <stdio.h>")
for t in runtime_type_analysis.live_types do
if t.ctype == "val*" then
compiler.generate_init_instance(t)
+ compiler.generate_check_init_instance(t)
else
compiler.generate_box_instance(t)
end
do
assert self.runtime_type_analysis.live_types.has(mtype)
assert mtype.ctype == "val*"
- var v = new GlobalCompilerVisitor(self)
+ var v = self.new_visitor
var is_native_array = mtype.mclass.name == "NativeArray"
end
v.add("{res}->classid = {self.classid(mtype)};")
+ self.generate_init_attr(v, res, mtype)
+ v.add("return {res};")
+ v.add("\}")
+ end
+
+ fun generate_check_init_instance(mtype: MClassType)
+ do
+ if self.modelbuilder.toolcontext.opt_no_check_initialization.value then return
+
+ var v = self.new_visitor
+ var res = new RuntimeVariable("self", mtype, mtype)
+ self.header.add_decl("void CHECK_NEW_{mtype.c_name}({mtype.ctype});")
+ v.add_decl("/* allocate {mtype} */")
+ v.add_decl("void CHECK_NEW_{mtype.c_name}({mtype.ctype} {res}) \{")
+ self.generate_check_attr(v, res, mtype)
+ v.add("\}")
+ end
+
+ # Generate code that collect initialize the attributes on a new instance
+ fun generate_init_attr(v: GlobalCompilerVisitor, recv: RuntimeVariable, mtype: MClassType)
+ do
for cd in mtype.collect_mclassdefs(self.mainmodule)
do
var n = self.modelbuilder.mclassdef2nclassdef[cd]
for npropdef in n.n_propdefs do
if npropdef isa AAttrPropdef then
- npropdef.init_expr(v, res)
+ npropdef.init_expr(v, recv)
+ end
+ end
+ end
+ end
+
+ # Generate a check-init-instance
+ fun generate_check_attr(v: GlobalCompilerVisitor, recv: RuntimeVariable, mtype: MClassType)
+ do
+ for cd in mtype.collect_mclassdefs(self.mainmodule)
+ do
+ var n = self.modelbuilder.mclassdef2nclassdef[cd]
+ for npropdef in n.n_propdefs do
+ if npropdef isa AAttrPropdef then
+ npropdef.check_expr(v, recv)
end
end
end
- v.add("return {res};")
- v.add("\}")
end
fun generate_box_instance(mtype: MClassType)
do
assert self.runtime_type_analysis.live_types.has(mtype)
assert mtype.ctype != "val*"
- var v = new GlobalCompilerVisitor(self)
+ var v = self.new_visitor
self.header.add_decl("val* BOX_{mtype.c_name}({mtype.ctype});")
v.add_decl("/* allocate {mtype} */")
abort
end
- var v = new GlobalCompilerVisitor(compiler)
+ var v = compiler.new_visitor
var selfvar = new RuntimeVariable("self", recv, recv)
if compiler.runtime_type_analysis.live_types.has(recv) then
selfvar.is_exact = true
# ENSURE: result.mtype.ctype == mtype.ctype
fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable
do
- if value.mtype.ctype == mtype.ctype then
+ if value.mtype == mtype then
+ return value
+ else if value.mtype.ctype == "val*" and mtype.ctype == "val*" then
return value
else if value.mtype.ctype == "val*" then
return self.new_expr("((struct {mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype)
# Add a check and an abort for a null reciever is needed
fun check_recv_notnull(recv: RuntimeVariable)
do
+ if self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then return
+
var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
if maybenull then
self.add("if ({recv} == NULL) \{")
res = self.new_var(ret)
end
- if types.is_empty then
- self.add("/*BUG: no live types for {args.first.inspect} . {m}*/")
- return res
- end
self.add("/* send {m} on {args.first.inspect} */")
if args.first.mtype.ctype != "val*" then
var mclasstype = args.first.mtype.as(MClassType)
if res != null then self.assign(res, res2.as(not null))
return res
end
- if args.first.mcasttype isa MNullableType or args.first.mcasttype isa MNullType then
+ var consider_null = not self.compiler.modelbuilder.toolcontext.opt_no_check_other.value or m.name == "==" or m.name == "!="
+ if args.first.mcasttype isa MNullableType or args.first.mcasttype isa MNullType and consider_null then
# The reciever is potentially null, so we have to 3 cases: ==, != or NullPointerException
self.add("if ({args.first} == NULL) \{ /* Special null case */")
if m.name == "==" then
end
self.add "\} else"
end
+ if types.is_empty then
+ self.add("\{")
+ self.add("/*BUG: no live types for {args.first.inspect} . {m}*/")
+ self.bugtype(args.first)
+ self.add("\}")
+ return res
+ end
+
self.add("switch({args.first}->classid) \{")
var last = types.last
var defaultpropdef: nullable MMethodDef = null
do
if recv.mtype.ctype != "val*" then return
self.add("fprintf(stderr, \"BTD BUG: Dynamic type is %s, static type is %s\\n\", class_names[{recv}->classid], \"{recv.mcasttype}\");")
+ self.add("exit(1);")
end
# Generate a polymorphic attribute is_set test
fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable
do
+ check_recv_notnull(recv)
+
var types = self.collect_types(recv)
var res = self.new_var(bool_type)
if types.is_empty then
self.add("/*BUG: no live types for {recv.inspect} . {a}*/")
+ self.bugtype(recv)
return res
end
self.add("/* isset {a} on {recv.inspect} */")
# Generate a polymorphic attribute read
fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable
do
+ check_recv_notnull(recv)
+
var types = self.collect_types(recv)
var ret = a.intro.static_mtype.as(not null)
if types.is_empty then
self.add("/*BUG: no live types for {recv.inspect} . {a}*/")
+ self.bugtype(recv)
return res
end
self.add("/* read {a} on {recv.inspect} */")
var ta = a.intro.static_mtype.as(not null)
ta = self.resolve_for(ta, recv2)
var res2 = self.new_expr("((struct {t.c_name}*){recv})->{a.intro.c_name}", ta)
- if not ta isa MNullableType then
+ if not ta isa MNullableType and not self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then
if ta.ctype == "val*" then
self.add("if ({res2} == NULL) \{")
self.add_abort("Uninitialized attribute {a.name}")
# Generate a polymorphic attribute write
fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable)
do
+ check_recv_notnull(recv)
+
var types = self.collect_types(recv)
if types.is_empty then
self.add("/*BUG: no live types for {recv.inspect} . {a}*/")
+ self.bugtype(recv)
return
end
self.add("/* write {a} on {recv.inspect} */")
value2 = tmp
end
if value1.mtype.ctype != "val*" then
- if value2.mtype.ctype == value1.mtype.ctype then
+ if value2.mtype == value1.mtype then
self.add("{res} = {value1} == {value2};")
else if value2.mtype.ctype != "val*" then
self.add("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
end
# Generate a check-init-instance
- fun check_init_instance(recv: RuntimeVariable)
+ fun check_init_instance(recv: RuntimeVariable, mtype: MClassType)
do
- var mtype = self.anchor(recv.mcasttype)
- for cd in mtype.collect_mclassdefs(self.compiler.mainmodule)
- do
- var n = self.compiler.modelbuilder.mclassdef2nclassdef[cd]
- for npropdef in n.n_propdefs do
- if npropdef isa AAttrPropdef then
- # Force read to check the initialization
- self.read_attribute(npropdef.mpropdef.mproperty, recv)
- end
- end
+ if self.compiler.modelbuilder.toolcontext.opt_no_check_initialization.value then return
+
+ mtype = self.anchor(mtype).as(MClassType)
+ if not self.compiler.runtime_type_analysis.live_types.has(mtype) then
+ debug "problem: {mtype} was detected dead"
end
+
+ self.add("CHECK_NEW_{mtype.c_name}({recv});")
end
# Generate an integer value
end
var length = self.int_instance(array.length)
self.send(self.get_property("with_native", arraytype), [res, nat, length])
- self.check_init_instance(res)
+ self.check_init_instance(res, arraytype)
self.add("\}")
return res
end
self.add("{res} = {res2};")
var length = self.int_instance(string.length)
self.send(self.get_property("with_native", mtype), [res, nat, length])
- self.check_init_instance(res)
+ self.check_init_instance(res, mtype)
self.add("{name} = {res};")
self.add("\}")
return res
# Generate type checks in the C code to check covariant parameters
fun compile_parameter_check(v: GlobalCompilerVisitor, arguments: Array[RuntimeVariable])
do
+ if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
+
for i in [0..msignature.arity[ do
# skip test for vararg since the array is instantiated with the correct polymorphic type
if msignature.vararg_rank == i then continue
var nat = v.class_name_string(arguments.first)
v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
return
+ else if pname == "force_garbage_collection" then
+ v.add("GC_gcollect();")
+ return
end
v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
debug("Not implemented {mpropdef}")
do
var nexpr = self.n_expr
if nexpr != null then
+ var oldnode = v.current_node
+ v.current_node = self
var old_frame = v.frame
var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
v.frame = frame
var value = v.expr(nexpr, self.mpropdef.static_mtype)
v.write_attribute(self.mpropdef.mproperty, recv, value)
v.frame = old_frame
+ v.current_node = oldnode
end
end
+
+ fun check_expr(v: GlobalCompilerVisitor, recv: RuntimeVariable)
+ do
+ var nexpr = self.n_expr
+ if nexpr != null then return
+
+ var oldnode = v.current_node
+ v.current_node = self
+ var old_frame = v.frame
+ var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
+ v.frame = frame
+ # Force read to check the initialization
+ v.read_attribute(self.mpropdef.mproperty, recv)
+ v.frame = old_frame
+ v.current_node = oldnode
+ end
end
redef class AClassdef
# Do not call this method directly, use `v.expr' instead
private fun expr(v: GlobalCompilerVisitor): nullable RuntimeVariable
do
- debug("Unimplemented expr {class_name}")
v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
var mtype = self.mtype
if mtype == null then
redef class AAssertExpr
redef fun stmt(v)
do
+ if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
+
var cond = v.expr_bool(self.n_expr)
v.add("if (!{cond}) \{")
v.stmt(self.n_else)
do
var i1 = v.expr(self.n_expr, null)
var i2 = v.expr(self.n_expr2, null)
- var res = v.init_instance(self.mtype.as(MClassType))
+ var mtype = self.mtype.as(MClassType)
+ var res = v.init_instance(mtype)
var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
- v.check_init_instance(res)
+ v.check_init_instance(res, mtype)
return res
end
end
do
var i1 = v.expr(self.n_expr, null)
var i2 = v.expr(self.n_expr2, null)
- var res = v.init_instance(self.mtype.as(MClassType))
+ var mtype = self.mtype.as(MClassType)
+ var res = v.init_instance(mtype)
var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
- v.check_init_instance(res)
+ v.check_init_instance(res, mtype)
return res
end
end
redef fun expr(v)
do
var i = v.expr(self.n_expr, null)
+ if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
+
var cond = v.type_test(i, self.mtype.as(not null))
v.add("if (!{cond}) \{")
v.add_abort("Cast failed")
redef fun expr(v)
do
var i = v.expr(self.n_expr, null)
+ if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
+
v.add("if ({i} == NULL) \{")
v.add_abort("Cast failed")
v.add("\}")
#self.debug("got {res2} from {mproperty}. drop {recv}")
return res2
end
- v.check_init_instance(recv)
+ v.check_init_instance(recv, mtype)
return recv
end
end
nitlanguage / nit.git / blobdiff