redef class MMLocalProperty
# The attached node (if any)
meth node: PNode do return null
+
+ # Is the concrete method defined as init
+ meth is_init: Bool do return false
end
# Concrete NIT source attribute
class MMSrcAttribute
-special MMLocalProperty
special MMAttribute
redef readable attr _node: AAttrPropdef
init(name: Symbol, cla: MMLocalClass, n: AAttrPropdef)
# Concrete NIT source method
class MMSrcMethod
-special MMLocalProperty
special MMMethod
end
class MMAttrImplementationMethod
special MMSrcMethod
redef readable attr _node: AAttrPropdef
+ init(name: Symbol, cla: MMLocalClass, n: AAttrPropdef)
+ do
+ super(name, cla)
+ _node = n
+ end
end
# Concrete NIT source method for an automatic read accesor
class MMReadImplementationMethod
special MMAttrImplementationMethod
-
init(name: Symbol, cla: MMLocalClass, n: AAttrPropdef)
do
- super(name, cla)
- _node = n
+ super(name, cla, n)
end
end
# Concrete NIT source method for an automatic write accesor
class MMWriteImplementationMethod
special MMAttrImplementationMethod
-
init(name: Symbol, cla: MMLocalClass, n: AAttrPropdef)
do
- super(name, cla)
- _node = n
+ super(name, cla, n)
end
end
# Concrete NIT source method for an explicit method
class MMMethSrcMethod
special MMSrcMethod
+ redef meth is_init do return _node isa AConcreteInitPropdef
redef readable attr _node: AMethPropdef
init(name: Symbol, cla: MMLocalClass, n: AMethPropdef)
do
end
end
+# Concrete NIT implicit constructor
+class MMImplicitInit
+special MMMethSrcMethod
+ redef meth is_init do return true
+ readable attr _unassigned_attributes: Array[MMSrcAttribute]
+ readable attr _super_inits: Array[MMLocalProperty]
+ init(cla: MMLocalClass, unassigned_attributes: Array[MMSrcAttribute], super_inits: Array[MMLocalProperty])
+ do
+ super(once "init".to_symbol, cla, null)
+ _unassigned_attributes = unassigned_attributes
+ _super_inits = super_inits
+ end
+end
-# Local variable and method parameter
-class Variable
+# Local variables
+abstract class Variable
# Name of the variable
readable attr _name: Symbol
redef meth to_s do return _name.to_s
+ meth kind: String is abstract
+
init(n: Symbol, d: PNode)
do
- assert n != null
- assert d != null
+ #assert n != null
+ #assert d != null
_name = n
_decl = d
end
end
+# Variable declared with 'var'
+class VarVariable
+special Variable
+ redef meth kind do return once "variable"
+ init(n: Symbol, d: PNode) do super
+end
+
+# Parameter of method (declared in signature)
+class ParamVariable
+special Variable
+ redef meth kind do return once "parameter"
+ init(n: Symbol, d: PNode) do super
+end
+
+# Automatic variable (like in the 'for' statement)
+class AutoVariable
+special Variable
+ redef meth kind do return once "automatic variable"
+ init(n: Symbol, d: PNode) do super
+end
+
###############################################################################
# Visitor used during the syntax analysis
# Display an error for a given syntax node
meth error(n: PNode, s: String)
do
- _tc.error("{n.locate}: {s}")
+ _tc.error("{locate(n)}: {s}")
end
# Display a warning for a given syntax node
meth warning(n: PNode, s: String)
do
- _tc.warning("{n.locate}: {s}")
+ _tc.warning("{locate(n)}: {s}")
+ end
+
+ #
+ meth locate(n: PNode): String
+ do
+ if n != null then return n.locate
+ return _module.filename
end
# Check conformity and display error
error(n, "Type error: expected {stype}, got {subtype}")
return false
end
+
+ # Check that an expression has a static type and that
+ # Display an error and return false if n is a statement
+ # Require that the static type of n is known
+ meth check_expr(n: PExpr): Bool
+ do
+ # FIXME: The tc.error_count is a workaround since currently there is no way
+ # to distingate statements from buggy expressions: both have a null stype
+ if tc.error_count == 0 and n.stype == null then
+ error(n, "Type error: expected expression.")
+ return false
+ end
+ return true
+ end
+
+ # Combine check_conform and check_expr
+ meth check_conform_expr(n: PExpr, stype: MMType): Bool
+ do
+ if check_expr(n) then return check_conform(n, n.stype, stype) else return false
+ end
protected init(tc: ToolContext, module: MMSrcModule)
redef class AMethPropdef
# Associated method (MM entity)
meth method: MMMethSrcMethod is abstract
+
+ # Associated 'self' variable
+ meth self_var: ParamVariable is abstract
end
redef class ATypePropdef
meth position: Int is abstract
# Associated local variable
- meth variable: Variable is abstract
+ meth variable: ParamVariable is abstract
end
redef class PType
redef class AType
attr _stype_cache: MMType
- attr _stype_cached: Bool
+ attr _stype_cached: Bool = false
redef meth get_local_class(v)
do
redef class AVardeclExpr
# Assiociated local variable
- readable writable attr _variable: Variable
+ readable writable attr _variable: VarVariable
end
redef class AForVardeclExpr
# Associated automatic local variable
- readable writable attr _variable: Variable
+ readable writable attr _variable: AutoVariable
+end
+
+redef class ASelfExpr
+ # Associated local variable
+ readable writable attr _variable: ParamVariable
end
redef class AVarFormExpr
nitlanguage / nit.git / blobdiff