jminusminus

Class JCastOp

java.lang.Object

jminusminus.JAST

jminusminus.JStatement

jminusminus.JExpression

jminusminus.JCastOp

 class JCastOp
extends JExpression

The AST for an cast expression, which has both a cast (a type) and the expression to be cast.

Field Summary

Fields inherited from class jminusminus.JExpression

isStatementExpression, type

Fields inherited from class jminusminus.JAST

compilationUnit, line

Constructor Summary

Constructors

Constructor and Description
JCastOp(int line, Type cast, JExpression expr) Construct an AST node for a cast operation from its line number, cast, and expression.

Method Summary

Methods

Modifier and Type	Method and Description
JExpression	analyze(Context context) Analyzing a cast expression means, resolving the type (to which we are casting), checking the legality of the cast, and computing a (possibly null) conversion for use in code generation.
void	codegen(CLEmitter output) Generating code for a cast expression involves generating code for the original expr, and then for any necessary conversion.
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

JCastOp

public JCastOp(int line,
       Type cast,
       JExpression expr)

Construct an AST node for a cast operation from its line number, cast, and expression.

Parameters:

line - the line in which the operation occurs in the source file.

cast - the type we're casting our expression as.

expr - the expression we're casting.

Method Detail

analyze

public JExpression analyze(Context context)

Analyzing a cast expression means, resolving the type (to which we are casting), checking the legality of the cast, and computing a (possibly null) conversion for use in code generation.

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 cast expression involves generating code for the original expr, and then for any necessary conversion.

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.