import literal
import typing
import auto_super_init
+import frontend
+
+redef class ToolContext
+ # --discover-call-trace
+ var opt_discover_call_trace: OptionBool = new OptionBool("Trace calls of the first invocation of a method", "--discover-call-trace")
+
+ redef init
+ do
+ super
+ self.option_context.add_option(self.opt_discover_call_trace)
+ end
+end
redef class ModelBuilder
- # Execute the program from the entry point (Sys::main) of the `mainmodule'
- # `arguments' are the command-line arguments in order
+ # Execute the program from the entry point (`Sys::main`) of the `mainmodule`
+ # `arguments` are the command-line arguments in order
# REQUIRE that:
# 1. the AST is fully loaded.
# 2. the model is fully built.
var mainobj = new MutableInstance(sys_type)
interpreter.mainobj = mainobj
interpreter.init_instance(mainobj)
- var initprop = mainmodule.try_get_primitive_method("init", sys_type)
+ var initprop = mainmodule.try_get_primitive_method("init", sys_type.mclass)
if initprop != null then
interpreter.send(initprop, [mainobj])
end
interpreter.check_init_instance(mainobj)
- var mainprop = mainmodule.try_get_primitive_method("main", sys_type)
+ var mainprop = mainmodule.try_get_primitive_method("main", sys_type.mclass)
if mainprop != null then
interpreter.send(mainprop, [mainobj])
end
fun force_get_primitive_method(name: String, recv: MType): MMethod
do
- return self.modelbuilder.force_get_primitive_method(self.frame.current_node, name, recv, self.mainmodule)
+ assert recv isa MClassType
+ return self.modelbuilder.force_get_primitive_method(self.frame.current_node, name, recv.mclass, self.mainmodule)
end
# Is a return executed?
var returnmark: nullable Frame = null
# Is a break executed?
- # Set this mark to skip the evaluation until a labeled statement catch it with `is_break'
+ # Set this mark to skip the evaluation until a labeled statement catch it with `is_break`
var breakmark: nullable EscapeMark = null
# Is a continue executed?
- # Set this mark to skip the evaluation until a labeled statement catch it with `is_continue'
+ # Set this mark to skip the evaluation until a labeled statement catch it with `is_continue`
var continuemark: nullable EscapeMark = null
# Is a return or a break or a continue executed?
# Read the value when you catch a mark or reach the end of a method
var escapevalue: nullable Instance = null
- # If there is a break and is associated with `escapemark', then return true an clear the mark.
- # If there is no break or if `escapemark' is null then return false.
+ # If there is a break and is associated with `escapemark`, then return true an clear the mark.
+ # If there is no break or if `escapemark` is null then return false.
# Use this function to catch a potential break.
fun is_break(escapemark: nullable EscapeMark): Bool
do
end
end
- # If there is a continue and is associated with `escapemark', then return true an clear the mark.
- # If there is no continue or if `escapemark' is null then return false.
+ # If there is a continue and is associated with `escapemark`, then return true an clear the mark.
+ # If there is no continue or if `escapemark` is null then return false.
# Use this function to catch a potential continue.
fun is_continue(escapemark: nullable EscapeMark): Bool
do
end
end
- # Evaluate `n' as an expression in the current context.
+ # Evaluate `n` as an expression in the current context.
# Return the value of the expression.
- # If `n' cannot be evaluated, then aborts.
+ # If `n` cannot be evaluated, then aborts.
fun expr(n: AExpr): nullable Instance
do
var frame = self.frame
if i == null and not self.is_escaping then
n.debug("inconsitance: no value and not escaping.")
end
+ var implicit_cast_to = n.implicit_cast_to
+ if implicit_cast_to != null then
+ var mtype = self.unanchor_type(implicit_cast_to)
+ if not self.is_subtype(i.mtype, mtype) then n.fatal(self, "Cast failed")
+ end
+
#n.debug("OUT Execute expr: value is {i}")
#if not is_subtype(i.mtype, n.mtype.as(not null)) then n.debug("Expected {n.mtype.as(not null)} got {i}")
frame.current_node = old
return i
end
- # Evaluate `n' as a statement in the current context.
- # Do nothing if `n' is sull.
- # If `n' cannot be evaluated, then aborts.
+ # Evaluate `n` as a statement in the current context.
+ # Do nothing if `n` is null.
+ # If `n` cannot be evaluated, then aborts.
fun stmt(n: nullable AExpr)
do
if n != null then
end
end
- # Map used to store values of nodes that must be evaluated once in the system (AOnceExpr)
+ # Map used to store values of nodes that must be evaluated once in the system (`AOnceExpr`)
var onces: Map[ANode, Instance] = new HashMap[ANode, Instance]
- # Return the boolean instance associated with `val'.
+ # Return the boolean instance associated with `val`.
fun bool_instance(val: Bool): Instance
do
if val then return self.true_instance else return self.false_instance
end
- # Return the integer instance associated with `val'.
+ # Return the integer instance associated with `val`.
fun int_instance(val: Int): Instance
do
var ic = self.mainmodule.get_primitive_class("Int")
return new PrimitiveInstance[Int](ic.mclass_type, val)
end
- # Return the char instance associated with `val'.
+ # Return the char instance associated with `val`.
fun char_instance(val: Char): Instance
do
var ic = self.mainmodule.get_primitive_class("Char")
return new PrimitiveInstance[Char](ic.mclass_type, val)
end
- # Return the float instance associated with `val'.
+ # Return the float instance associated with `val`.
fun float_instance(val: Float): Instance
do
var ic = self.mainmodule.get_primitive_class("Float")
return new PrimitiveInstance[Float](ic.mclass_type, val)
end
- # The unique intance of the `true' value.
+ # The unique intance of the `true` value.
var true_instance: Instance
- # The unique intance of the `false' value.
+ # The unique intance of the `false` value.
var false_instance: Instance
- # The unique intance of the `null' value.
+ # The unique intance of the `null` value.
var null_instance: Instance
- # Return a new array made of `values'.
+ # Return a new array made of `values`.
# The dynamic type of the result is Array[elttype].
fun array_instance(values: Array[Instance], elttype: MType): Instance
do
return res
end
- # Return a new native string initialized with `txt'
+ # Return a new native string initialized with `txt`
fun native_string_instance(txt: String): Instance
do
var val = new Buffer.from(txt)
exit(1)
end
- # Execute `mpropdef' for a `args' (where args[0] is the receiver).
- # Return a falue if `mpropdef' is a function, or null if it is a procedure.
+ # Debug on the current node
+ fun debug(message: String)
+ do
+ if frames.is_empty then
+ print message
+ else
+ self.frame.current_node.debug(message)
+ end
+ end
+
+ # Store known method, used to trace methods as thez are reached
+ var discover_call_trace: Set[MMethodDef] = new HashSet[MMethodDef]
+
+ # Execute `mpropdef` for a `args` (where `args[0]` is the receiver).
+ # Return a falue if `mpropdef` is a function, or null if it is a procedure.
# The call is direct/static. There is no message-seding/late-bindng.
fun call(mpropdef: MMethodDef, args: Array[Instance]): nullable Instance
do
+ if self.modelbuilder.toolcontext.opt_discover_call_trace.value and not self.discover_call_trace.has(mpropdef) then
+ self.discover_call_trace.add mpropdef
+ self.debug("Discovered {mpropdef}")
+ end
var vararg_rank = mpropdef.msignature.vararg_rank
if vararg_rank >= 0 then
assert args.length >= mpropdef.msignature.arity + 1 # because of self
var mproperty = mpropdef.mproperty
if self.modelbuilder.mpropdef2npropdef.has_key(mpropdef) then
var npropdef = self.modelbuilder.mpropdef2npropdef[mpropdef]
+ self.parameter_check(npropdef, mpropdef, args)
return npropdef.call(self, mpropdef, args)
else if mproperty.name == "init" then
var nclassdef = self.modelbuilder.mclassdef2nclassdef[mpropdef.mclassdef]
+ self.parameter_check(nclassdef, mpropdef, args)
return nclassdef.call(self, mpropdef, args)
else
fatal("Fatal Error: method {mpropdef} not found in the AST")
end
end
+ # Generate type checks in the C code to check covariant parameters
+ fun parameter_check(node: ANode, mpropdef: MMethodDef, args: Array[Instance])
+ do
+ var msignature = mpropdef.msignature
+ 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
+
+ # skip if the cast is not required
+ var origmtype = mpropdef.mproperty.intro.msignature.mparameters[i].mtype
+ if not origmtype.need_anchor then continue
+
+ # get the parameter type
+ var mtype = msignature.mparameters[i].mtype
+ var anchor = args.first.mtype.as(MClassType)
+ mtype = mtype.anchor_to(self.mainmodule, anchor)
+ if not args[i+1].mtype.is_subtype(self.mainmodule, anchor, mtype) then
+ node.fatal(self, "Cast failed")
+ end
+ end
+ end
+
fun call_closure(closure: ClosureInstance, args: Array[Instance]): nullable Instance
do
var nclosuredef = closure.nclosuredef
return null
end
- # Execute `mproperty' for a `args' (where args[0] is the receiver).
- # Return a falue if `mproperty' is a function, or null if it is a procedure.
+ # Execute `mproperty` for a `args` (where `args[0]` is the receiver).
+ # Return a falue if `mproperty` is a function, or null if it is a procedure.
# The call is polimotphic. There is a message-seding/late-bindng according to te receiver (args[0]).
fun send(mproperty: MMethod, args: Array[Instance]): nullable Instance
do
fatal("Reciever is null")
abort
end
- var propdefs = mproperty.lookup_definitions(self.mainmodule, mtype)
- if propdefs.length > 1 then
- fatal("NOT YET IMPLEMETED ERROR: Property conflict: {propdefs.join(", ")}")
- abort
- end
- assert propdefs.length == 1 else
- fatal("Fatal Error: No property '{mproperty}' for '{recv}'")
- abort
- end
- var propdef = propdefs.first
+ var propdef = mproperty.lookup_first_definition(self.mainmodule, mtype)
return self.call(propdef, args)
end
- # Read the attribute `mproperty' of an instance `recv' and return its value.
+ # Read the attribute `mproperty` of an instance `recv` and return its value.
# If the attribute in not yet initialized, then aborts with an error message.
fun read_attribute(mproperty: MAttribute, recv: Instance): Instance
do
if cache.has_key(mtype) then return cache[mtype]
var res = new Array[AAttrPropdef]
- for cd in mtype.collect_mclassdefs(self.mainmodule)
- do
+ var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
+ self.mainmodule.linearize_mclassdefs(cds)
+ for cd in cds do
var n = self.modelbuilder.mclassdef2nclassdef[cd]
for npropdef in n.n_propdefs do
if npropdef isa AAttrPropdef then
var collect_attr_propdef_cache = new HashMap[MType, Array[AAttrPropdef]]
- # Fill the initial values of the newly created instance `recv'.
- # `recv.mtype' is used to know what must be filled.
+ # Fill the initial values of the newly created instance `recv`.
+ # `recv.mtype` is used to know what must be filled.
fun init_instance(recv: Instance)
do
for npropdef in collect_attr_propdef(recv.mtype) do
end
end
- # Check that non nullable attributes of `recv' are correctly initialized.
+ # Check that non nullable attributes of `recv` are correctly initialized.
# This function is used as the last instruction of a new
- # FIXME: this will work better once there is nullable types
fun check_init_instance(recv: Instance)
do
if not recv isa MutableInstance then return
# else aborts
fun is_true: Bool do abort
- # Return true if `self' IS `o' (using the Nit semantic of is)
+ # Return true if `self` IS `o` (using the Nit semantic of is)
fun eq_is(o: Instance): Bool do return self is o
# Human readable object identity "Type#number"
- redef fun to_s do return "{mtype}#{object_id}"
+ redef fun to_s do return "{mtype}"
# Return the integer value if the instance is an integer.
# else aborts
redef class ANode
# Aborts the program with a message
- # `v' is used to know if a colored message is displayed or not
+ # `v` is used to know if a colored message is displayed or not
private fun fatal(v: NaiveInterpreter, message: String)
do
if v.modelbuilder.toolcontext.opt_no_color.value == true then
- print("Runtime error: {message} ({location.file.filename}:{location.line_start})")
+ stderr.write("Runtime error: {message} ({location.file.filename}:{location.line_start})\n")
else
- print("{location}: Runtime error: {message}\n{location.colored_line("0;31")}")
- print(v.stack_trace)
+ stderr.write("{location}: Runtime error: {message}\n{location.colored_line("0;31")}\n")
+ stderr.write(v.stack_trace)
+ stderr.write("\n")
end
exit(1)
end
end
redef class APropdef
- # Execute a `mpropdef' associated with the current node.
+ # Execute a `mpropdef` associated with the current node.
private fun call(v: NaiveInterpreter, mpropdef: MMethodDef, args: Array[Instance]): nullable Instance
do
fatal(v, "NOT YET IMPLEMENTED method kind {class_name}. {mpropdef}")
end
else if pname == "output_class_name" then
var recv = args.first
- print recv.mtype.as(MClassType).mclass
+ print recv.mtype
return null
else if pname == "native_class_name" then
var recv = args.first
- var txt = recv.mtype.as(MClassType).mclass.to_s
+ var txt = recv.mtype.to_s
return v.native_string_instance(txt)
else if pname == "==" then
# == is correclt redefined for instances
return v.int_instance(recv <=> args[1].val.as(Char))
end
else if cname == "Float" then
+ var recv = args[0].to_f
if pname == "unary -" then
- return v.float_instance(-args[0].to_f)
+ return v.float_instance(-recv)
else if pname == "+" then
- return v.float_instance(args[0].to_f + args[1].to_f)
+ return v.float_instance(recv + args[1].to_f)
else if pname == "-" then
- return v.float_instance(args[0].to_f - args[1].to_f)
+ return v.float_instance(recv - args[1].to_f)
else if pname == "*" then
- return v.float_instance(args[0].to_f * args[1].to_f)
+ return v.float_instance(recv * args[1].to_f)
else if pname == "/" then
- return v.float_instance(args[0].to_f / args[1].to_f)
+ return v.float_instance(recv / args[1].to_f)
+ else if pname == "<" then
+ return v.bool_instance(recv < args[1].to_f)
+ else if pname == ">" then
+ return v.bool_instance(recv > args[1].to_f)
+ else if pname == "<=" then
+ return v.bool_instance(recv <= args[1].to_f)
+ else if pname == ">=" then
+ return v.bool_instance(recv >= args[1].to_f)
else if pname == "to_i" then
- return v.int_instance(args[0].to_f.to_i)
+ return v.int_instance(recv.to_i)
end
else if cname == "NativeString" then
var recvval = args.first.val.as(Buffer)
end
else if pname == "calloc_array" then
var recvtype = args.first.mtype.as(MClassType)
- var mtype: MType = recvtype.supertype_to(v.mainmodule, recvtype, v.mainmodule.get_primitive_class("ArrayCapable"))
- mtype = mtype.as(MGenericType).arguments.first
+ var mtype: MType
+ mtype = recvtype.supertype_to(v.mainmodule, recvtype, v.mainmodule.get_primitive_class("ArrayCapable"))
+ mtype = mtype.arguments.first
var val = new Array[Instance].filled_with(v.null_instance, args[1].to_i)
return new PrimitiveInstance[Array[Instance]](v.mainmodule.get_primitive_class("NativeArray").get_mtype([mtype]), val)
+ else if pname == "native_argc" then
+ return v.int_instance(v.arguments.length)
+ else if pname == "native_argv" then
+ var txt = v.arguments[args[1].to_i]
+ return v.native_string_instance(txt)
end
fatal(v, "NOT YET IMPLEMENTED intern {mpropdef}")
abort
if pname == "rand" then
var res = recvval.rand
return v.int_instance(res)
+ else if pname == "native_int_to_s" then
+ return v.native_string_instance(recvval.to_s)
end
else if cname == "NativeFile" then
var recvval = args.first.val
else if pname == "system" then
var res = sys.system(recvval.to_s)
return v.int_instance(res)
+ else if pname == "atof" then
+ return v.float_instance(recvval.to_f)
end
else if cname == "Int" then
if pname == "rand" then
return v.float_instance(args[0].to_f.cos)
else if pname == "sin" then
return v.float_instance(args[0].to_f.sin)
+ else if pname == "tan" then
+ return v.float_instance(args[0].to_f.tan)
+ else if pname == "acos" then
+ return v.float_instance(args[0].to_f.acos)
+ else if pname == "asin" then
+ return v.float_instance(args[0].to_f.asin)
+ else if pname == "atan" then
+ return v.float_instance(args[0].to_f.atan)
+ else if pname == "sqrt" then
+ return v.float_instance(args[0].to_f.sqrt)
+ else if pname == "exp" then
+ return v.float_instance(args[0].to_f.exp)
+ else if pname == "log" then
+ return v.float_instance(args[0].to_f.log)
+ else if pname == "pow" then
+ return v.float_instance(args[0].to_f.pow(args[1].to_f))
+ else if pname == "rand" then
+ return v.float_instance(args[0].to_f.rand)
end
else if pname == "native_argc" then
return v.int_instance(v.arguments.length)
return v.native_string_instance(txt)
else if pname == "get_time" then
return v.int_instance(get_time)
+ else if pname == "srand_from" then
+ srand_from(args[1].to_i)
+ return null
else if pname == "atan2" then
return v.float_instance(atan2(args[1].to_f, args[2].to_f))
else if pname == "pi" then
end
end
- # Evaluate and set the default value of the attribute in `recv'
+ # Evaluate and set the default value of the attribute in `recv`
private fun init_expr(v: NaiveInterpreter, recv: Instance)
do
assert recv isa MutableInstance
return
end
var mtype = self.mpropdef.static_mtype.as(not null)
- # TODO The needinit info is statically computed, move it to modelbuilder or whatever
- mtype = mtype.resolve_for(self.mpropdef.mclassdef.bound_mtype, self.mpropdef.mclassdef.bound_mtype, self.mpropdef.mclassdef.mmodule, true)
+ mtype = mtype.anchor_to(v.mainmodule, recv.mtype.as(MClassType))
if mtype isa MNullableType then
recv.attributes[self.mpropdef.mproperty] = v.null_instance
end
end
redef class AClassdef
- # Execute an implicit `mpropdef' associated with the current node.
+ # Execute an implicit `mpropdef` associated with the current node.
private fun call(v: NaiveInterpreter, mpropdef: MMethodDef, args: Array[Instance]): nullable Instance
do
var super_inits = self.super_inits
redef class AExpr
# Evaluate the node as a possible expression.
# Return a possible value
- # NOTE: Do not call this method directly, but use `v.expr'
+ # NOTE: Do not call this method directly, but use `v.expr`
# This method is here to be implemented by subclasses.
private fun expr(v: NaiveInterpreter): nullable Instance
do
end
# Evaluate the node as a statement.
- # NOTE: Do not call this method directly, but use `v.stmt'
+ # NOTE: Do not call this method directly, but use `v.stmt`
# This method is here to be implemented by subclasses (no need to return something).
private fun stmt(v: NaiveInterpreter)
do
end
redef class ABlockExpr
+ redef fun expr(v)
+ do
+ var last = self.n_expr.last
+ for e in self.n_expr do
+ if e == last then break
+ v.stmt(e)
+ if v.is_escaping then return null
+ end
+ return last.expr(v)
+ end
+
redef fun stmt(v)
do
for e in self.n_expr do
end
redef class AVarAssignExpr
- redef fun stmt(v)
+ redef fun expr(v)
do
var i = v.expr(self.n_value)
- if i == null then return
+ if i == null then return null
v.frame.map[self.variable.as(not null)] = i
+ return i
end
end
end
redef class AIfExpr
+ redef fun expr(v)
+ do
+ var cond = v.expr(self.n_expr)
+ if cond == null then return null
+ if cond.is_true then
+ return v.expr(self.n_then.as(not null))
+ else
+ return v.expr(self.n_else.as(not null))
+ end
+ end
+
redef fun stmt(v)
do
var cond = v.expr(self.n_expr)
if i == null then return null
val.add(i)
end
- var mtype = v.unanchor_type(self.mtype.as(not null)).as(MGenericType)
+ var mtype = v.unanchor_type(self.mtype.as(not null)).as(MClassType)
var elttype = mtype.arguments.first
return v.array_instance(val, elttype)
end
do
var txt = self.value.as(not null)
var nat = v.native_string_instance(txt)
- var res = new MutableInstance(v.mainmodule.get_primitive_class("String").mclass_type)
- v.init_instance(res)
- v.send(v.force_get_primitive_method("from_cstring", res.mtype), [res, nat])
- v.check_init_instance(res)
+ var res = v.send(v.force_get_primitive_method("to_s", nat.mtype), [nat]).as(not null)
return res
end
end
# stantard call-next-method
var mpropdef = v.frame.mpropdef
- # FIXME: we do not want an ugly static call!
- var mpropdefs = mpropdef.mproperty.lookup_super_definitions(mpropdef.mclassdef.mmodule, mpropdef.mclassdef.bound_mtype)
- if mpropdefs.length != 1 then
- debug("Warning: NOT YET IMPLEMENTED: multiple MPRODFEFS for super {mpropdef} for {recv}: {mpropdefs.join(", ")}")
- end
- mpropdef = mpropdefs.first
+ mpropdef = mpropdef.lookup_next_definition(v.mainmodule, recv.mtype)
assert mpropdef isa MMethodDef
var res = v.call(mpropdef, args)
return res
do
var recv = v.expr(self.n_expr)
if recv == null then return null
+ if recv.mtype isa MNullType then fatal(v, "Reciever is null")
var mproperty = self.mproperty.as(not null)
return v.read_attribute(mproperty, recv)
end
do
var recv = v.expr(self.n_expr)
if recv == null then return
+ if recv.mtype isa MNullType then fatal(v, "Reciever is null")
var i = v.expr(self.n_value)
if i == null then return
var mproperty = self.mproperty.as(not null)
do
var recv = v.expr(self.n_expr)
if recv == null then return
+ if recv.mtype isa MNullType then fatal(v, "Reciever is null")
var value = v.expr(self.n_value)
if value == null then return
var mproperty = self.mproperty.as(not null)
do
var recv = v.expr(self.n_expr)
if recv == null then return null
+ if recv.mtype isa MNullType then fatal(v, "Reciever is null")
var mproperty = self.mproperty.as(not null)
assert recv isa MutableInstance
return v.bool_instance(recv.attributes.has_key(mproperty))
nitlanguage / nit.git / blobdiff