jminusminus

Class JNewOp

java.lang.Object

jminusminus.JAST

jminusminus.JStatement

jminusminus.JExpression

jminusminus.JNewOp

 class JNewOp
extends JExpression

The AST node for a "new" expression. It keeps track of its type, the Constructor representing the expression, its arguments and their types.

Field Summary

Fields inherited from class jminusminus.JExpression

isStatementExpression, type

Fields inherited from class jminusminus.JAST

compilationUnit, line

Constructor Summary

Constructors

Constructor and Description
JNewOp(int line, Type type, ArrayList<JExpression> arguments) Construct an AST node for a "new" expression.

Method Summary

Methods

Modifier and Type	Method and Description
JExpression	analyze(Context context) To analyze the new operation, we (1) resolve the type, (2) analyze its arguments, (3) check accessibility of the type, (3) find the appropriate Constructor.
void	codegen(CLEmitter output) Generating code for a new operation involves generating the NEW instruction for creating the object on the stack, then gnerating the code for the actual arguments, and then code for invoking the constructor (the initialization method).
void	writeToStdOut(PrettyPrinter p) Write the information pertaining to this AST to STDOUT.

Methods inherited from class jminusminus.JExpression

codegen, isStatementExpression, type

Methods inherited from class jminusminus.JAST

line, partialCodegen

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JNewOp

public JNewOp(int line,
      Type type,
      ArrayList<JExpression> arguments)

Construct an AST node for a "new" expression.

Parameters:

line - the line in which the "new" expression occurs in the source file.

type - the type being constructed.

arguments - arguments to the constructor.

Method Detail

analyze

public JExpression analyze(Context context)

To analyze the new operation, we (1) resolve the type, (2) analyze its arguments, (3) check accessibility of the type, (3) find the appropriate Constructor.

Specified by:

analyze in class JExpression

Parameters:

context - context in which names are resolved.

Returns:

the analyzed (and possibly rewritten) AST subtree.

codegen

public void codegen(CLEmitter output)

Generating code for a new operation involves generating the NEW instruction for creating the object on the stack, then gnerating the code for the actual arguments, and then code for invoking the constructor (the initialization method).

Specified by:

codegen in class JAST

Parameters:

output - the code emitter (basically an abstraction for producing the .class file).

writeToStdOut

public void writeToStdOut(PrettyPrinter p)

Description copied from class: JAST

Write the information pertaining to this AST to STDOUT.

Specified by:

writeToStdOut in class JAST

Parameters:

p - for pretty printing with indentation.