class AOrElseExpr

nitc :: AOrElseExpr

A or else expression

Introduced properties

private var _n_kwelse: TKwelse

nitc :: AOrElseExpr :: _n_kwelse

The else keyword
init init_aorelseexpr(n_expr: nullable AExpr, n_op: nullable TKwor, n_kwelse: nullable TKwelse, n_expr2: nullable AExpr)

nitc :: AOrElseExpr :: init_aorelseexpr

fun n_kwelse: TKwelse

nitc :: AOrElseExpr :: n_kwelse

The else keyword
fun n_kwelse=(n_kwelse: TKwelse)

nitc :: AOrElseExpr :: n_kwelse=

The else keyword

Redefined properties

redef type SELF: AOrElseExpr

nitc $ AOrElseExpr :: SELF

Type of this instance, automatically specialized in every class
redef fun accept_post_typing(v: TypeVisitor)

nitc :: typing $ AOrElseExpr :: accept_post_typing

redef fun accept_pretty_printer(v: PrettyPrinterVisitor)

nitc :: pretty $ AOrElseExpr :: accept_pretty_printer

Start visit of self using a PrettyPrinterVisitor
redef fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable

nitc :: abstract_compiler $ AOrElseExpr :: expr

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

nitc :: java_compiler $ AOrElseExpr :: expr

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

nitc :: naive_interpreter $ AOrElseExpr :: expr

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

nitc :: ssa $ AOrElseExpr :: generate_basic_blocks

Generate recursively basic block for this expression
redef fun is_inlinable: Bool

nitc :: pretty $ AOrElseExpr :: is_inlinable

Is self printable in one line?
redef fun n_expr2=(node: AExpr)

nitc :: parser_prod $ AOrElseExpr :: n_expr2=

The second boolean operand
redef fun n_expr=(node: AExpr)

nitc :: parser_prod $ AOrElseExpr :: n_expr=

The first boolean operand
redef fun n_kwelse=(node: TKwelse)

nitc :: parser_prod $ AOrElseExpr :: n_kwelse=

The else keyword
redef fun n_op=(node: Token)

nitc :: parser_prod $ AOrElseExpr :: n_op=

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

nitc :: parser_prod $ AOrElseExpr :: replace_child

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

nitc :: parser_prod $ AOrElseExpr :: 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 _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 _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 _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 :: ABinBoolExpr :: _n_expr

The first boolean operand
private var _n_expr2: AExpr

nitc :: ABinBoolExpr :: _n_expr2

The second boolean operand
private var _n_kwelse: TKwelse

nitc :: AOrElseExpr :: _n_kwelse

The else keyword
private var _n_op: Token

nitc :: ABinBoolExpr :: _n_op

The operator
private var _parent: nullable ANode

nitc :: ANode :: _parent

Parent of the node in the AST
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.
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
protected fun expr(v: NaiveInterpreter): nullable Instance

nitc :: AExpr :: expr

Evaluate the node as a possible expression.
private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable

nitc :: AExpr :: expr

Try to compile self as an 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 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_aorelseexpr(n_expr: nullable AExpr, n_op: nullable TKwor, n_kwelse: nullable TKwelse, n_expr2: nullable AExpr)

nitc :: AOrElseExpr :: init_aorelseexpr

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 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 :: ABinBoolExpr :: n_expr

The first boolean operand
fun n_expr2: AExpr

nitc :: ABinBoolExpr :: n_expr2

The second boolean operand
fun n_expr2=(n_expr2: AExpr)

nitc :: ABinBoolExpr :: n_expr2=

The second boolean operand
fun n_expr=(n_expr: AExpr)

nitc :: ABinBoolExpr :: n_expr=

The first boolean operand
fun n_kwelse: TKwelse

nitc :: AOrElseExpr :: n_kwelse

The else keyword
fun n_kwelse=(n_kwelse: TKwelse)

nitc :: AOrElseExpr :: n_kwelse=

The else keyword
fun n_op: Token

nitc :: ABinBoolExpr :: n_op

The operator
fun n_op=(n_op: Token)

nitc :: ABinBoolExpr :: n_op=

The operator
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 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
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).
private fun stmt(v: AbstractCompilerVisitor)

nitc :: AExpr :: stmt

Try to compile self as a statement
protected fun stmt(v: NaiveInterpreter)

nitc :: AExpr :: stmt

Evaluate the node 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::AOrElseExpr AOrElseExpr nitc::ABinBoolExpr ABinBoolExpr nitc::AOrElseExpr->nitc::ABinBoolExpr nitc::ABoolExpr ABoolExpr nitc::ABinBoolExpr->nitc::ABoolExpr ...nitc::ABoolExpr ... ...nitc::ABoolExpr->nitc::ABoolExpr

Ancestors

abstract class ABoolExpr

nitc :: ABoolExpr

Something that is boolean expression
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 ABinBoolExpr

nitc :: ABinBoolExpr

Something that is binary boolean expression

Class definitions

nitc $ AOrElseExpr 
# A `or else` expression
class AOrElseExpr
	super ABinBoolExpr

	# The `else` keyword
	var n_kwelse: TKwelse is writable, noinit
end
src/parser/parser_nodes.nit:2191,1--2197,3

nitc :: parser_prod $ AOrElseExpr 
redef class AOrElseExpr
	init init_aorelseexpr (
		n_expr: nullable AExpr,
		n_op: nullable TKwor,
		n_kwelse: nullable TKwelse,
		n_expr2: nullable AExpr
	)
	do
		_n_expr = n_expr.as(not null)
		n_expr.parent = self
		_n_op = n_op.as(not null)
		n_op.parent = self
		_n_kwelse = n_kwelse.as(not null)
		n_kwelse.parent = self
		_n_expr2 = n_expr2.as(not null)
		n_expr2.parent = self
	end

	redef fun replace_child(old_child: ANode, new_child: nullable ANode)
	do
		if _n_expr == old_child then
			n_expr = new_child.as(AExpr)
			return
		end
		if _n_op == old_child then
			n_op = new_child.as(TKwor)
			return
		end
		if _n_kwelse == old_child then
			n_kwelse = new_child.as(TKwelse)
			return
		end
		if _n_expr2 == old_child then
			n_expr2 = new_child.as(AExpr)
			return
		end
	end

	redef fun n_expr=(node)
	do
		_n_expr = node
		node.parent = self
	end
	redef fun n_op=(node)
	do
		_n_op = node
		node.parent = self
	end
	redef fun n_kwelse=(node)
	do
		_n_kwelse = node
		node.parent = self
	end
	redef fun n_expr2=(node)
	do
		_n_expr2 = node
		node.parent = self
	end


	redef fun visit_all(v: Visitor)
	do
		v.enter_visit(_n_expr)
		v.enter_visit(_n_op)
		v.enter_visit(_n_kwelse)
		v.enter_visit(_n_expr2)
	end
end
src/parser/parser_prod.nit:3799,1--3866,3

nitc :: flow $ AOrElseExpr 
redef class AOrElseExpr
	redef fun accept_flow_visitor(v)
	do
		super
	end
end
src/semantize/flow.nit:533,1--538,3

nitc :: pretty $ AOrElseExpr 
redef class AOrElseExpr
	redef fun accept_pretty_printer(v) do
		v.visit n_expr
		v.adds
		v.consume "or"
		v.adds
		v.consume "else"
		v.adds
		v.visit n_expr2
	end

	redef fun is_inlinable do return true
end
src/pretty.nit:2042,1--2054,3

nitc :: typing $ AOrElseExpr 
redef class AOrElseExpr
	redef fun accept_typing(v)
	do
		var t1 = v.visit_expr(n_expr)
		var t2 = v.visit_expr(n_expr2)

		if t1 == null or t2 == null then
			return # Skip error
		end

		if t1 isa MNullType then
			self.mtype = t2
			return
		else if v.can_be_null(t1) then
			t1 = t1.as_notnull
		end

		var t = v.merge_types(self, [t1, t2])
		if t == null then
			var c = v.get_mclass(self, "Object")
			if c == null then return # forward error
			t = c.mclass_type
			if v.can_be_null(t2) then
				t = t.as_nullable
			end
			#v.error(self, "Type Error: ambiguous type {t1} vs {t2}")
		end
		self.mtype = t
	end

	redef fun accept_post_typing(v)
	do
		var t1 = n_expr.mtype
		if t1 == null then
			return
		else
			v.check_can_be_null(n_expr, t1)
		end
	end
end
src/semantize/typing.nit:1537,1--1576,3

nitc :: naive_interpreter $ AOrElseExpr 
redef class AOrElseExpr
	redef fun expr(v)
	do
		var i = v.expr(self.n_expr)
		if i == null then return null
		if i != v.null_instance then return i
		return v.expr(self.n_expr2)
	end
end
src/interpreter/naive_interpreter.nit:2022,1--2030,3

nitc :: ssa $ AOrElseExpr 
redef class AOrElseExpr
	redef fun generate_basic_blocks(ssa, old_block)
	do
		self.n_expr.generate_basic_blocks(ssa, old_block)
		return self.n_expr2.generate_basic_blocks(ssa, old_block)
	end
end
src/ssa.nit:756,1--762,3

nitc :: abstract_compiler $ AOrElseExpr 
redef class AOrElseExpr
	redef fun expr(v)
	do
		var res = v.new_var(self.mtype.as(not null))
		var i1 = v.expr(self.n_expr, null)

		if not v.maybe_null(i1) then return i1

		v.add("if ({i1}!=NULL) \{")
		v.assign(res, i1)
		v.add("\} else \{")
		var i2 = v.expr(self.n_expr2, null)
		v.assign(res, i2)
		v.add("\}")
		return res
	end
end
src/compiler/abstract_compiler.nit:4089,1--4105,3

nitc :: java_compiler $ AOrElseExpr 
redef class AOrElseExpr
	redef fun expr(v)
	do
		var res = v.new_var(self.mtype.as(not null))
		var i1 = v.expr(self.n_expr, null)
		v.add("if ({i1} != null && !{i1}.is_null()) \{")
		v.assign(res, i1)
		v.add("\} else \{")
		var i2 = v.expr(self.n_expr2, null)
		v.assign(res, i2)
		v.add("\}")
		return res
	end
end
src/compiler/java_compiler.nit:2182,1--2195,3
Nit tools. Version .