class AIssetAttrExpr

nitc :: AIssetAttrExpr

A is-set check of old-style attributes. eg isset x._a

Introduced properties

private var _n_kwisset: TKwisset

nitc :: AIssetAttrExpr :: _n_kwisset

The isset keyword
init init_aissetattrexpr(n_kwisset: nullable TKwisset, n_expr: nullable AExpr, n_id: nullable TAttrid)

nitc :: AIssetAttrExpr :: init_aissetattrexpr

fun n_kwisset: TKwisset

nitc :: AIssetAttrExpr :: n_kwisset

The isset keyword
fun n_kwisset=(n_kwisset: TKwisset)

nitc :: AIssetAttrExpr :: n_kwisset=

The isset keyword

Redefined properties

redef type SELF: AIssetAttrExpr

nitc $ AIssetAttrExpr :: SELF

Type of this instance, automatically specialized in every class
redef fun expr(v: JavaCompilerVisitor): nullable RuntimeVariable

nitc :: java_compiler $ AIssetAttrExpr :: expr

Try to compile self as an expression
redef fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable

nitc :: abstract_compiler $ AIssetAttrExpr :: expr

Try to compile self as an expression
redef fun expr(v: NaiveInterpreter): nullable Instance

nitc :: naive_interpreter $ AIssetAttrExpr :: expr

Evaluate the node as a possible expression.
redef fun generate_basic_blocks(ssa: SSA, old_block: BasicBlock): BasicBlock

nitc :: ssa $ AIssetAttrExpr :: generate_basic_blocks

Generate recursively basic block for this expression
redef fun n_expr=(node: AExpr)

nitc :: parser_prod $ AIssetAttrExpr :: n_expr=

The receiver of the attribute
redef fun n_id=(node: TAttrid)

nitc :: parser_prod $ AIssetAttrExpr :: n_id=

The name of the attribute
redef fun n_kwisset=(node: TKwisset)

nitc :: parser_prod $ AIssetAttrExpr :: n_kwisset=

The isset keyword
redef fun replace_child(old_child: ANode, new_child: nullable ANode)

nitc :: parser_prod $ AIssetAttrExpr :: replace_child

Replace a child with an other node in the AST
redef fun visit_all(v: Visitor)

nitc :: parser_prod $ AIssetAttrExpr :: visit_all

Visit all nodes in order.

All properties

fun !=(other: nullable Object): Bool

core :: Object :: !=

Have self and other different values?
fun ==(other: nullable Object): Bool

core :: Object :: ==

Have self and other the same value?
type CLASS: Class[SELF]

core :: Object :: CLASS

The type of the class of self.
type SELF: Object

core :: Object :: SELF

Type of this instance, automatically specialized in every class
private var _after_flow_context: nullable FlowContext

nitc :: AExpr :: _after_flow_context

The flow after the full evaluation of the expression/statement
private var _attr_type: nullable MType

nitc :: AAttrFormExpr :: _attr_type

The static type of the attribute.
private var _comprehension: nullable AArrayExpr

nitc :: AExpr :: _comprehension

Is non-null if self is a leaf of a comprehension array construction.
private var _first_location: nullable Location

nitc :: Prod :: _first_location

Location on the first token after the start of a production
private var _first_token: nullable Token

nitc :: Prod :: _first_token

The first token of the production in the AST
private var _force_block: Bool

nitc :: ANode :: _force_block

Force self to be rendered as a block.
private var _force_inline: Bool

nitc :: ANode :: _force_inline

Force self to be rendered as a line.
private var _id: Int

nitc :: AAttrFormExpr :: _id

Identifier of the class which introduced the attribute
private var _implicit_cast_to: nullable MType

nitc :: AExpr :: _implicit_cast_to

If required, the following implicit cast .as(XXX)
private var _is_broken: Bool

nitc :: ANode :: _is_broken

The indication that the node did not pass some semantic verifications.
private var _is_typed: Bool

nitc :: AExpr :: _is_typed

Is the statement correctly typed?
private var _last_token: nullable Token

nitc :: Prod :: _last_token

The last token of the production in the AST
private var _location: Location

nitc :: ANode :: _location

Location is set during AST building. Once built, location can not be null.
private var _mproperty: nullable MAttribute

nitc :: AAttrFormExpr :: _mproperty

The attribute accessed.
private var _mtype: nullable MType

nitc :: AExpr :: _mtype

The static type of the expression.
private var _n_annotations: nullable AAnnotations

nitc :: Prod :: _n_annotations

All the annotations attached directly to the node
private var _n_expr: AExpr

nitc :: AAttrFormExpr :: _n_expr

The receiver of the attribute
private var _n_id: TAttrid

nitc :: AAttrFormExpr :: _n_id

The name of the attribute
private var _n_kwisset: TKwisset

nitc :: AIssetAttrExpr :: _n_kwisset

The isset keyword
private var _offset: Int

nitc :: AAttrFormExpr :: _offset

Position of the attribute in attribute table
private var _parent: nullable ANode

nitc :: ANode :: _parent

Parent of the node in the AST
private var _status: Int

nitc :: AAttrFormExpr :: _status

Indicate the status of the optimization for this node
private var _vararg_decl: Int

nitc :: AExpr :: _vararg_decl

It indicates the number of arguments collected as a vararg.
private var _variable_cache: nullable Variable

nitc :: AExpr :: _variable_cache

private fun accept_explain_assert(v: ExplainAssertVisitor)

nitc :: AExpr :: accept_explain_assert

Fill v to explain this node if the parent assert fails
fun accept_forward_analysis(v: ForwardAnalysis)

nitc :: ANode :: accept_forward_analysis

Apply the forward analysis v to self.
private fun accept_post_typing(v: TypeVisitor)

nitc :: ANode :: accept_post_typing

private abstract fun accept_pretty_printer(v: PrettyPrinterVisitor)

nitc :: ANode :: accept_pretty_printer

Start visit of self using a PrettyPrinterVisitor
fun accept_reaching_defs(v: ReachingDefsAnalysis)

nitc :: ANode :: accept_reaching_defs

Apply a ReachingDefsAnalysis to self.
fun add(expr: AExpr)

nitc :: AExpr :: add

Add expr at the end of the block
fun after_flow_context: nullable FlowContext

nitc :: AExpr :: after_flow_context

The flow after the full evaluation of the expression/statement
protected fun after_flow_context=(after_flow_context: nullable FlowContext)

nitc :: AExpr :: after_flow_context=

The flow after the full evaluation of the expression/statement
fun allocate_mtype(v: RapidTypeVisitor)

nitc :: AExpr :: allocate_mtype

Make the mtype of the expression live
fun as_id: nullable String

nitc :: AExpr :: as_id

Get self as a single identifier.
fun as_int: nullable Int

nitc :: AExpr :: as_int

Get self as an Int.
fun as_string: nullable String

nitc :: AExpr :: as_string

Get self as a String.
fun attr_type: nullable MType

nitc :: AAttrFormExpr :: attr_type

The static type of the attribute.
protected fun attr_type=(attr_type: nullable MType)

nitc :: AAttrFormExpr :: attr_type=

The static type of the attribute.
private fun bad_expr_message(child: AExpr): nullable String

nitc :: ANode :: bad_expr_message

An additional information message to explain the role of a child expression.
protected fun class_factory(name: String): CLASS

core :: Object :: class_factory

Implementation used by get_class to create the specific class.
fun class_name: String

core :: Object :: class_name

The class name of the object.
abstract fun clone: SELF

core :: Cloneable :: clone

Duplicate self
fun collect_annotations_by_name(name: String): Array[AAnnotation]

nitc :: ANode :: collect_annotations_by_name

Do a deep search and return an array of node that are annotated
private fun collect_comments: Array[TComment]

nitc :: Prod :: collect_comments

Collect all TComment contained in the production
private abstract fun collect_length: Int

nitc :: ANode :: collect_length

Collect the length (in Char) of the node.
fun collect_text: String

nitc :: Prod :: collect_text

Join the text of all visited tokens
fun collect_tokens_by_text(text: String): Array[Token]

nitc :: ANode :: collect_tokens_by_text

Do a deep search and return an array of tokens that match a given text
fun common_parent(other: ANode): nullable ANode

nitc :: ANode :: common_parent

The most specific common parent between self and other
fun comprehension: nullable AArrayExpr

nitc :: AExpr :: comprehension

Is non-null if self is a leaf of a comprehension array construction.
protected fun comprehension=(comprehension: nullable AArrayExpr)

nitc :: AExpr :: comprehension=

Is non-null if self is a leaf of a comprehension array construction.
fun debug(message: String)

nitc :: ANode :: debug

Display a message for the colored location of the node
protected fun decorate_tag(v: HtmlightVisitor, res: HTMLTag, token: Token): nullable HInfoBox

nitc :: ANode :: decorate_tag

Add aditionnal information on a child-token and return an additionnal HInfoBox on it
fun depth: Int

nitc :: ANode :: depth

Number of nodes between self and the root of the AST
fun detach

nitc :: ANode :: detach

Detach a node from its parent
fun detach_with_placeholder: AExpr

nitc :: AExpr :: detach_with_placeholder

The detach method completely remove the node in the parent.
private fun do_cloneable(v: CloneVisitor)

nitc :: ANode :: do_cloneable

fun do_typing(modelbuilder: ModelBuilder, visited_mpropdef: MPropDef)

nitc :: AExpr :: do_typing

Type the expression as if located in visited_mpropdef
fun dump_info(v: ASTDump): String

nitc :: ANode :: dump_info

Information to display on a node
fun dump_tree(display_structural: nullable Bool, display_line: nullable Bool)

nitc :: ANode :: dump_tree

Write the subtree on stdout.
private fun expr(v: JavaCompilerVisitor): nullable RuntimeVariable

nitc :: AExpr :: expr

Try to compile self as an expression
private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable

nitc :: AExpr :: expr

Try to compile self as an expression
protected fun expr(v: NaiveInterpreter): nullable Instance

nitc :: AExpr :: expr

Evaluate the node as a possible expression.
fun fatal(v: NaiveInterpreter, message: String)

nitc :: ANode :: fatal

Aborts the program with a message
fun first_location: nullable Location

nitc :: Prod :: first_location

Location on the first token after the start of a production
protected fun first_location=(first_location: nullable Location)

nitc :: Prod :: first_location=

Location on the first token after the start of a production
fun first_token: nullable Token

nitc :: Prod :: first_token

The first token of the production in the AST
protected fun first_token=(first_token: nullable Token)

nitc :: Prod :: first_token=

The first token of the production in the AST
private fun force_block: Bool

nitc :: ANode :: force_block

Force self to be rendered as a block.
private fun force_block=(force_block: Bool)

nitc :: ANode :: force_block=

Force self to be rendered as a block.
private fun force_inline: Bool

nitc :: ANode :: force_inline

Force self to be rendered as a line.
private fun force_inline=(force_inline: Bool)

nitc :: ANode :: force_inline=

Force self to be rendered as a line.
fun generate_basic_blocks(ssa: SSA, old_block: BasicBlock): BasicBlock

nitc :: AExpr :: generate_basic_blocks

Generate recursively basic block for this expression
fun get_annotations(name: String): Array[AAnnotation]

nitc :: Prod :: get_annotations

Return all its annotations of a given name in the order of their declaration
fun get_class: CLASS

core :: Object :: get_class

The meta-object representing the dynamic type of self.
fun get_single_annotation(name: String, modelbuilder: ModelBuilder): nullable AAnnotation

nitc :: Prod :: get_single_annotation

Try to get its single annotation with a given name
fun hash: Int

core :: Object :: hash

The hash code of the object.
fun hot_location: Location

nitc :: ANode :: hot_location

The location of the important part of the node (identifier or whatever)
fun id: Int

nitc :: AAttrFormExpr :: id

Identifier of the class which introduced the attribute
protected fun id=(id: Int)

nitc :: AAttrFormExpr :: id=

Identifier of the class which introduced the attribute
fun implicit_cast_to: nullable MType

nitc :: AExpr :: implicit_cast_to

If required, the following implicit cast .as(XXX)
protected fun implicit_cast_to=(implicit_cast_to: nullable MType)

nitc :: AExpr :: implicit_cast_to=

If required, the following implicit cast .as(XXX)
fun infobox(v: HtmlightVisitor): nullable HInfoBox

nitc :: ANode :: infobox

Return a optional infobox
init init

core :: Object :: init

init init_aissetattrexpr(n_kwisset: nullable TKwisset, n_expr: nullable AExpr, n_id: nullable TAttrid)

nitc :: AIssetAttrExpr :: init_aissetattrexpr

fun inspect: String

core :: Object :: inspect

Developer readable representation of self.
protected fun inspect_head: String

core :: Object :: inspect_head

Return "CLASSNAME:#OBJECTID".
fun is_block: Bool

nitc :: Prod :: is_block

Is the production contained in full block of line?
fun is_broken: Bool

nitc :: ANode :: is_broken

The indication that the node did not pass some semantic verifications.
fun is_broken=(is_broken: Bool)

nitc :: ANode :: is_broken=

The indication that the node did not pass some semantic verifications.
private fun is_inlinable: Bool

nitc :: ANode :: is_inlinable

Is self printable in one line?
private fun is_noserialize: Bool

nitc :: ANode :: is_noserialize

Is this node annotated to not be made serializable?
intern fun is_same_instance(other: nullable Object): Bool

core :: Object :: is_same_instance

Return true if self and other are the same instance (i.e. same identity).
fun is_same_serialized(other: nullable Object): Bool

core :: Object :: is_same_serialized

Is self the same as other in a serialization context?
intern fun is_same_type(other: Object): Bool

core :: Object :: is_same_type

Return true if self and other have the same dynamic type.
private fun is_serialize: Bool

nitc :: ANode :: is_serialize

Is this node annotated to be made serializable?
fun is_span: Bool

nitc :: Prod :: is_span

Is the production a part of a single line (without being a block)
fun is_structural: Bool

nitc :: ANode :: is_structural

Is self a token or a pure-structural production like AQId?
fun is_typed: Bool

nitc :: AExpr :: is_typed

Is the statement correctly typed?
protected fun is_typed=(is_typed: Bool)

nitc :: AExpr :: is_typed=

Is the statement correctly typed?
fun its_variable: nullable Variable

nitc :: AExpr :: its_variable

Return the variable read (if any)
fun last_token: nullable Token

nitc :: Prod :: last_token

The last token of the production in the AST
protected fun last_token=(last_token: nullable Token)

nitc :: Prod :: last_token=

The last token of the production in the AST
fun location: Location

nitc :: ANode :: location

Location is set during AST building. Once built, location can not be null.
fun location=(location: Location)

nitc :: ANode :: location=

Location is set during AST building. Once built, location can not be null.
protected fun make_tag(v: HtmlightVisitor): nullable HTMLTag

nitc :: ANode :: make_tag

Optionally creates a tag that encapsulate the AST element on HTML rendering
fun make_var_read: AVarExpr

nitc :: AExpr :: make_var_read

Return a new variable read that contains the value of the expression
fun mproperty: nullable MAttribute

nitc :: AAttrFormExpr :: mproperty

The attribute accessed.
protected fun mproperty=(mproperty: nullable MAttribute)

nitc :: AAttrFormExpr :: mproperty=

The attribute accessed.
fun mtype: nullable MType

nitc :: AExpr :: mtype

The static type of the expression.
protected fun mtype=(mtype: nullable MType)

nitc :: AExpr :: mtype=

The static type of the expression.
private fun must_be_block: Bool

nitc :: ANode :: must_be_block

Does self have to be rendered as a block?
private fun must_be_inline: Bool

nitc :: ANode :: must_be_inline

Does self have be rendered as a line?
fun n_annotations: nullable AAnnotations

nitc :: Prod :: n_annotations

All the annotations attached directly to the node
fun n_annotations=(n_annotations: nullable AAnnotations)

nitc :: Prod :: n_annotations=

All the annotations attached directly to the node
fun n_expr: AExpr

nitc :: AAttrFormExpr :: n_expr

The receiver of the attribute
fun n_expr=(n_expr: AExpr)

nitc :: AAttrFormExpr :: n_expr=

The receiver of the attribute
fun n_id: TAttrid

nitc :: AAttrFormExpr :: n_id

The name of the attribute
fun n_id=(n_id: TAttrid)

nitc :: AAttrFormExpr :: n_id=

The name of the attribute
fun n_kwisset: TKwisset

nitc :: AIssetAttrExpr :: n_kwisset

The isset keyword
fun n_kwisset=(n_kwisset: TKwisset)

nitc :: AIssetAttrExpr :: n_kwisset=

The isset keyword
private intern fun native_class_name: CString

core :: Object :: native_class_name

The class name of the object in CString format.
fun numbering(v: VirtualMachine, position: Int): Int

nitc :: AExpr :: numbering

Give a position to each variable declared in the node.
intern fun object_id: Int

core :: Object :: object_id

An internal hash code for the object based on its identity.
fun offset: Int

nitc :: AAttrFormExpr :: offset

Position of the attribute in attribute table
protected fun offset=(offset: Int)

nitc :: AAttrFormExpr :: offset=

Position of the attribute in attribute table
protected fun optimize(mproperty: MAttribute, recv: MutableInstance)

nitc :: AAttrFormExpr :: optimize

Optimize this attribute access
fun output

core :: Object :: output

Display self on stdout (debug only).
intern fun output_class_name

core :: Object :: output_class_name

Display class name on stdout (debug only).
fun parent: nullable ANode

nitc :: ANode :: parent

Parent of the node in the AST
protected fun parent=(parent: nullable ANode)

nitc :: ANode :: parent=

Parent of the node in the AST
fun parentize_tokens

nitc :: ANode :: parentize_tokens

Visit the AST and computes advanced AST attributes on Tokens and Prod
private abstract fun replace_child(old_child: ANode, new_child: nullable ANode)

nitc :: ANode :: replace_child

Replace a child with an other node in the AST
fun replace_clone

nitc :: ANode :: replace_clone

Create a new clone of self
fun replace_with(node: ANode)

nitc :: ANode :: replace_with

Replace itself with an other node in the AST
private fun resolve_property(v: TypeVisitor)

nitc :: AAttrFormExpr :: resolve_property

Resolve the attribute accessed.
fun root: ANode

nitc :: ANode :: root

The topmost ancestor of the element
fun serialization_hash: Int

core :: Object :: serialization_hash

Hash value use for serialization
private fun start_token: nullable Token

nitc :: Prod :: start_token

The token where the production really start (skipping ADoc).
fun status: Int

nitc :: AAttrFormExpr :: status

Indicate the status of the optimization for this node
protected fun status=(status: Int)

nitc :: AAttrFormExpr :: status=

Indicate the status of the optimization for this node
protected fun stmt(v: NaiveInterpreter)

nitc :: AExpr :: stmt

Evaluate the node as a statement.
private fun stmt(v: AbstractCompilerVisitor)

nitc :: AExpr :: stmt

Try to compile self as a statement
private fun stmt(v: JavaCompilerVisitor)

nitc :: AExpr :: stmt

Try to compile self as a statement
intern fun sys: Sys

core :: Object :: sys

Return the global sys object, the only instance of the Sys class.
abstract fun to_jvalue(env: JniEnv): JValue

core :: Object :: to_jvalue

fun to_s: String

core :: Object :: to_s

User readable representation of self.
fun to_xml: HTMLTag

nitc :: Prod :: to_xml

A XML representation of the AST
fun validate

nitc :: ANode :: validate

Recursively validate a AST node.
fun vararg_decl: Int

nitc :: AExpr :: vararg_decl

It indicates the number of arguments collected as a vararg.
protected fun vararg_decl=(vararg_decl: Int)

nitc :: AExpr :: vararg_decl=

It indicates the number of arguments collected as a vararg.
private fun variable_cache: nullable Variable

nitc :: AExpr :: variable_cache

private fun variable_cache=(variable_cache: nullable Variable)

nitc :: AExpr :: variable_cache=

abstract fun visit_all(v: Visitor)

nitc :: ANode :: visit_all

Visit all nodes in order.
private fun warn_parentheses(v: SimpleMiscVisitor)

nitc :: AExpr :: warn_parentheses

Warn in case of superfluous parentheses
private abstract fun was_inline: Bool

nitc :: ANode :: was_inline

Does self was written in one line before transformation?
package_diagram nitc::AIssetAttrExpr AIssetAttrExpr nitc::AAttrFormExpr AAttrFormExpr nitc::AIssetAttrExpr->nitc::AAttrFormExpr nitc::AExpr AExpr nitc::AAttrFormExpr->nitc::AExpr ...nitc::AExpr ... ...nitc::AExpr->nitc::AExpr

Ancestors

abstract class AExpr

nitc :: AExpr

Expression and statements
abstract class ANode

nitc :: ANode

Root of the AST class-hierarchy
interface Cloneable

core :: Cloneable

Something that can be cloned
interface Object

core :: Object

The root of the class hierarchy.
abstract class Prod

nitc :: Prod

Ancestor of all productions

Parents

abstract class AAttrFormExpr

nitc :: AAttrFormExpr

Whatever is a old-style attribute access

Class definitions

nitc $ AIssetAttrExpr 
# A is-set check of old-style attributes. eg `isset x._a`
class AIssetAttrExpr
	super AAttrFormExpr

	# The `isset` keyword
	var n_kwisset: TKwisset is writable, noinit
end
src/parser/parser_nodes.nit:2768,1--2774,3

nitc :: parser_prod $ AIssetAttrExpr 
redef class AIssetAttrExpr
	init init_aissetattrexpr (
		n_kwisset: nullable TKwisset,
		n_expr: nullable AExpr,
		n_id: nullable TAttrid
	)
	do
		_n_kwisset = n_kwisset.as(not null)
		n_kwisset.parent = self
		_n_expr = n_expr.as(not null)
		n_expr.parent = self
		_n_id = n_id.as(not null)
		n_id.parent = self
	end

	redef fun replace_child(old_child: ANode, new_child: nullable ANode)
	do
		if _n_kwisset == old_child then
			n_kwisset = new_child.as(TKwisset)
			return
		end
		if _n_expr == old_child then
			n_expr = new_child.as(AExpr)
			return
		end
		if _n_id == old_child then
			n_id = new_child.as(TAttrid)
			return
		end
	end

	redef fun n_kwisset=(node)
	do
		_n_kwisset = node
		node.parent = self
	end
	redef fun n_expr=(node)
	do
		_n_expr = node
		node.parent = self
	end
	redef fun n_id=(node)
	do
		_n_id = node
		node.parent = self
	end


	redef fun visit_all(v: Visitor)
	do
		v.enter_visit(_n_kwisset)
		v.enter_visit(_n_expr)
		v.enter_visit(_n_id)
	end
end
src/parser/parser_prod.nit:7190,1--7244,3

nitc :: typing $ AIssetAttrExpr 
redef class AIssetAttrExpr
	redef fun accept_typing(v)
	do
		self.resolve_property(v)
		var mtype = self.attr_type
		if mtype == null then return # Skip error

		var recvtype = self.n_expr.mtype.as(not null)
		var bound = v.resolve_for(mtype, recvtype, false)
		if bound isa MNullableType then
			v.error(n_id, "Type Error: `isset` on a nullable attribute.")
		end
		self.mtype = v.type_bool(self)
	end
end
src/semantize/typing.nit:2568,1--2582,3

nitc :: naive_interpreter $ AIssetAttrExpr 
redef class AIssetAttrExpr
	redef fun expr(v)
	do
		var recv = v.expr(self.n_expr)
		if recv == null then return null
		if recv.is_null then fatal(v, "Receiver is null")
		var mproperty = self.mproperty.as(not null)
		return v.bool_instance(v.isset_attribute(mproperty, recv))
	end
end
src/interpreter/naive_interpreter.nit:2434,1--2443,3

nitc :: abstract_compiler $ AIssetAttrExpr 
redef class AIssetAttrExpr
	redef fun expr(v)
	do
		var recv = v.expr(self.n_expr, null)
		var mproperty = self.mproperty.as(not null)
		return v.isset_attribute(mproperty, recv)
	end
end
src/compiler/abstract_compiler.nit:4580,1--4587,3

nitc :: ssa $ AIssetAttrExpr 
redef class AIssetAttrExpr
	redef fun generate_basic_blocks(ssa, old_block)
	do
		return self.n_expr.generate_basic_blocks(ssa, old_block)
	end
end
src/ssa.nit:916,1--921,3

nitc :: java_compiler $ AIssetAttrExpr 
redef class AIssetAttrExpr
	redef fun expr(v) do
		var recv = v.expr(self.n_expr, null)
		var mproperty = self.mproperty.as(not null)
		return v.isset_attribute(mproperty, recv)
	end
end
src/compiler/java_compiler.nit:2044,1--2050,3
Nit tools. Version v0.8-3595-g3f58b4f.