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package scalam.m.ast
/**
* Trait common to all objects having a representation in the matlab programming language.
* @define construct construct
*/
trait Mable {
/** Generates the matlab code associated to this $construct. */
def m: String
}
/**
* Root (ie self-contained/top-level) syntactic elements of the matlab language inherit from this trait.
* A root element in the matlab language is an element that may be contained on one line and optionally be terminated by a semi-colon.
* Currently a root element is either a statement (assigment, etc...), a comment or an expression that is evaluated.
*/
trait Root {
/** Returns the matlab code of this root element. */
final def line: String = this match {
case statement: Statement => statement.m + ";"
case expression: Expression => expression.m + ";"
case comment: Comment => comment.m
}
/**
* Utility function to associate this root with and end-of-line comment.
* Calling `line` on the root element returned by this method, will forward the call to `this.line` and append a comment.
*/
def withComment(comment: Comment) = EOLComment(this, comment)
}
/**
* Represents a matlab comment.
* @define construct comment
*/
trait Comment extends Mable with Root {
def m = this match {
case SimpleComment(text) => "% " + text
case DoubleComment(text) => "%% " + text
case EOLComment(root, comment) => root.line + " " + comment.m
}
}
/**
* Represents a simple matlab comment. This type of comment begins with a single percent sign (%).
* @define construct simple comment
*/
case class SimpleComment(text: String) extends Comment
/**
* Represents a double matlab comment. This type of comment begins with a double percent sign (%%).
* @define construct double comment
*/
case class DoubleComment(text: String) extends Comment
/**
* Represents an end-of-line comment associated to another matlab root element (such as a statement).
*/
case class EOLComment(root: Root, comment: Comment) extends Comment
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