claw.tatsu.primitive

Class Pragma

java.lang.Object

claw.tatsu.primitive.Pragma

public final class Pragma
extends java.lang.Object

Primitive transformation and test applied to FpragmaStatement. This included: - Extract directive prefix of a FpragmaStatement. - Split long pragma into continued pragma. - Remove comment from a pragma - Find pragma into previous siblings.

Author:

clementval

Method Summary

Modifier and Type	Method and Description
static java.lang.String	dropEndingComment(java.lang.String pragma) Remove any trailing comment from a pragma string.
static Xnode	findPrevious(Xnode from, java.lang.String keyword) Find a pragma element in the previous nodes containing a given keyword.
static boolean	fromClawPrimitive(Xnode pragma) Check if the pragma was already continued.
static java.lang.String	getPrefix(Xnode pragma) Return the pragma prefix.
static void	moveInExecution(Xnode pragma) If the first pragma statement is located as the first statement of the execution block, the OMNI Compiler front-end places it with the declaration block.
static java.util.List<java.lang.String>	split(java.lang.String fullPragma, int maxColumns, java.lang.String pragmaPrefix) Split a long pragma into chunk depending on the maxColumns specified.
static void	splitByCont(Xnode pragma, java.lang.String prefix, XcodeProgram xcodeml) Split the line by its previous continuation mark.
static void	splitByLength(Xnode pragma, XcodeProgram xcodeml, java.lang.String prefix) Split the line by its length and add continuation symbols.

Methods inherited from class java.lang.Object

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

Method Detail

getPrefix

public static java.lang.String getPrefix(Xnode pragma)

Return the pragma prefix.

Parameters:

pragma - The pragma node.

Returns:

Directive prefix if any. Empty string otherwise.

split

public static java.util.List<java.lang.String> split(java.lang.String fullPragma,
                                                     int maxColumns,
                                                     java.lang.String pragmaPrefix)

Split a long pragma into chunk depending on the maxColumns specified. The split is done on spaces or commas.

Parameters:

fullPragma - The original full pragma value.

maxColumns - Maximum number of columns. This length take into account the added prefix and continuation symbol.

pragmaPrefix - Prefix used by the pragma.

Returns:

A list of chunks from the original pragma.

splitByLength

public static void splitByLength(Xnode pragma,
                                 XcodeProgram xcodeml,
                                 java.lang.String prefix)
                          throws IllegalTransformationException

Split the line by its length and add continuation symbols.

Parameters:

pragma - Pragma statement to be splitted.

xcodeml - The XcodeML on which the transformations are applied.

prefix - Prefix of the directive.

Throws:

IllegalTransformationException - If the given element is not a FpragmaStatement.

splitByCont

public static void splitByCont(Xnode pragma,
                               java.lang.String prefix,
                               XcodeProgram xcodeml)
                        throws IllegalTransformationException

Split the line by its previous continuation mark.

Parameters:

pragma - Pragma node.

prefix - Pragma prefix.

xcodeml - Current XcodeML translation unit.

Throws:

IllegalTransformationException - If the given element is not a FpragmaStatement.

dropEndingComment

public static java.lang.String dropEndingComment(java.lang.String pragma)

Remove any trailing comment from a pragma string.

Parameters:

pragma - Original pragma string.

Returns:

Pragma string without the trailing comment if any.

fromClawPrimitive

public static boolean fromClawPrimitive(Xnode pragma)

Check if the pragma was already continued. Can happen when using the !$claw primitive directive

Parameters:

pragma - Pragma statement to be checked.

Returns:

True if the pragma was previously continued.

findPrevious

public static Xnode findPrevious(Xnode from,
                                 java.lang.String keyword)

Find a pragma element in the previous nodes containing a given keyword.

Parameters:

from - Element to start from.

keyword - Keyword to be found in the pragma.

Returns:

The pragma if found. Null otherwise.

moveInExecution

public static void moveInExecution(Xnode pragma)

If the first pragma statement is located as the first statement of the execution block, the OMNI Compiler front-end places it with the declaration block. If this doesn't make sense for a specific pragma, this method will move it to the execution block.

Parameters:

pragma - The pragma to be moved.