Model Redesign: Added Reference Frames
Added Inverse Functions UI Redesign Cleaned Code
This commit is contained in:
Kim Wittenburg
@@ -8,6 +8,13 @@
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@import Foundation;
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#import "NSString+MPExpressionElement.h"
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#import "MPToken.h"
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typedef NS_ENUM(NSUInteger, MPReferenceFrame) {
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MPElementReferenceFrame,
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MPSymbolReferenceFrame,
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MPTokenReferenceFrame
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};
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@class MPExpression, MPFunction, MPRangePath, MPExpressionEvaluator, MPParseError;
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@protocol MPExpressionElement;
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@@ -127,6 +134,34 @@
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@property (nonatomic, weak) MPFunction *parent;
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/*!
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@method rootExpression
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@brief Returns the root expression from the receiver's expression tree.
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@discussion The root expression is the ultimate parent of all expressions and
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functions in the expression tree. A root expression does not have
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a parent.
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@return The root expression from the receiver's expression tree.
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*/
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- (MPExpression *)rootExpression;
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/*!
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@method indexPath
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@brief Returns the index path of the receiver in the expression tree.
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@discussion The index path is calculated by going up the expression tree
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collecting the respective index of the receiver. The indexes are
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expressed in the indexed reference frame. If any of the indexes
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exceed the respective receiver's bounds a @c NSRangeException is
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raised.
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@return The index path of the receiver in the expression tree.
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*/
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- (NSIndexPath *)indexPath;
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/*!
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@method numberOfElements
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@brief Returns the number of elements in the receiver.
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@@ -139,7 +174,7 @@
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@return The current number of elements in the receiver.
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*/
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- (NSUInteger)numberOfElements;
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- (NSUInteger)countItemsInReferenceFrame:(MPReferenceFrame)referenceFrame;
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/*!
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@@ -160,7 +195,23 @@
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@return The element at @c anIndex.
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*/
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- (id<MPExpressionElement>)elementAtIndex:(NSUInteger)anIndex;
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- (id)itemAtIndex:(NSUInteger)anIndex
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referenceFrame:(MPReferenceFrame)referenceFrame;
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- (id<MPExpressionElement>)elementAtIndex:(NSUInteger)anIndex
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referenceFrame:(MPReferenceFrame)referenceFrame;
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/*!
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@method indexOfElement:
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@brief Returns the index of @c element or @c NSNotFound if it was not
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found.
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@param element
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The element to find.
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@return The index of @c element expressed in the indexed reference frame.
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*/
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- (NSUInteger)indexOfElement:(id<MPExpressionElement>)element;
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/*!
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@@ -185,7 +236,8 @@
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The length of the returned array is equal to the length of the
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specified range.
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*/
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- (NSArray *)elementsInIndexedRange:(NSRange)range;
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- (NSArray *)itemsInRange:(NSRange)range
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referenceFrame:(MPReferenceFrame)referenceFrame;
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/*!
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@@ -197,7 +249,51 @@
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@return An array of all elements from the receiver.
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*/
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- (NSArray *)elements;
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- (NSArray *)allItemsInReferenceFrame:(MPReferenceFrame)referenceFrame;
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/*!
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@method elementAtIndexPath:
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@brief Returns the element at the specified index path.
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@discussion This method @em walks down the expression tree (including
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functions) using the specified index path and finds the
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corresponding element. The returned object can be an @c NSString,
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a @c MPFunction or an @c MPExpression depending on the element @c
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indexPath points to. If any of the indexes exceed the bounds of
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the respective receiver an @c NSRangeException is raised.
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If the index path does not contain any indexes the receiver
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itself is returned.
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@param indexPath
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The index path the required object is located at. The indexes are
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expressed in the indexed reference frame.
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@return The element located at @c indexPath. The element is not copied
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before it is returned. Be aware of the fact that any mutations
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made to the returned object are reflected in the receiver.
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*/
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- (id)elementAtIndexPath:(NSIndexPath *)indexPath;
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- (NSUInteger)convertIndex:(NSUInteger)index
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fromReferenceFrame:(MPReferenceFrame)fromReferenceFrame
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toReferenceFrame:(MPReferenceFrame)toReferenceFrame;
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- (NSUInteger)convertIndex:(NSUInteger)index
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fromReferenceFrame:(MPReferenceFrame)fromReferenceFrame
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toReferenceFrame:(MPReferenceFrame)toReferenceFrame
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offset:(NSUInteger *)offset;
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- (NSRange)convertRange:(NSRange)aRange
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fromReferenceFrame:(MPReferenceFrame)fromReferenceFrame
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toReferenceFrame:(MPReferenceFrame)toReferenceFrame;
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- (NSRange)convertRange:(NSRange)aRange
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fromReferenceFrame:(MPReferenceFrame)fromReferenceFrame
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toReferenceFrame:(MPReferenceFrame)toReferenceFrame
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leadingOffset:(NSUInteger *)leadingOffset
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trailingOffset:(NSUInteger *)trailingOffset;
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#pragma mark Mutating Expressions
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@@ -228,9 +324,16 @@
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The elements that should replace the symbols specified by @c
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range.
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*/
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- (void)replaceSymbolsInRange:(NSRange)range
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withElements:(NSArray *)elements;
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- (void)replaceItemsInRange:(NSRange)range
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referenceFrame:(MPReferenceFrame)referenceFrame
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withElements:(NSArray *)elements;
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- (MPExpression *)subexpressionFromIndex:(NSUInteger)from
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referenceFrame:(MPReferenceFrame)referenceFrame;
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- (MPExpression *)subexpressionToIndex:(NSUInteger)to
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referenceFrame:(MPReferenceFrame)referenceFrame;
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- (MPExpression *)subexpressionWithRange:(NSRange)range
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referenceFrame:(MPReferenceFrame)referenceFrame;
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#pragma mark Evaluating Expressions
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@@ -256,17 +359,6 @@
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- (NSDecimalNumber *)evaluateWithError:(MPParseError *__autoreleasing *)error;
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/*!
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@property evaluator
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@brief Returns an object that can evaluate the receiver.
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@discussion To just evaluate an expression it is recommended to send it an
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@c evaluateWithError: message. You can however use this property
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instead if you need more control over the evaluation process.
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*/
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@property (readonly, nonatomic, strong) MPExpressionEvaluator *evaluator;
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#pragma mark Notifications
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// All notification methods should create a new rangePath with the receiver's index added to the beginning of the path and then ascend the message to it's parent
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@@ -291,8 +383,8 @@
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The number of elements replacing the elements specified by @c
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rangePath.
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*/
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- (void)didChangeElementsInIndexedRangePath:(MPRangePath *)rangePath
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replacementLength:(NSUInteger)replacementLength;
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- (void)didChangeElementsInRangePath:(MPRangePath *)rangePath
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replacementLength:(NSUInteger)replacementLength;
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#pragma mark Basic NSObject Methods
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@@ -301,412 +393,63 @@
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@end
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/* --------------------------------------------------------------------------- */
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/* Extension Methods */
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/* --------------------------------------------------------------------------- */
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@interface MPExpression (MPExpressionExtension)
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@interface MPExpression (MPExpressionConvenience)
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#pragma mark Querying Expressions
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- (NSUInteger)countElements;
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- (NSUInteger)countSymbols;
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- (NSUInteger)countTokens;
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/*!
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@method length
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@brief Returns the length of the receiver.
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@discussion The length of an expression is calculated by going over each
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element in the receiver and sending it a @c -length message. This
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method should be used to determine the number of digits or
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symbols in an expression.
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The result of this method is expressed in the located reference
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frame. The respective method for the indexed reference frame is
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@c -numberOfSymbols.
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@return The length of the receiver. This is the number of symbols in all
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elements in the receiver where a function element is counted as a
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single symbol.
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*/
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- (NSUInteger)length;
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/*!
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@method rootExpression
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@brief Returns the root expression from the receiver's expression tree.
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@discussion The root expression is the ultimate parent of all expressions and
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functions in the expression tree. A root expression does not have
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a parent.
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@return The root expression from the receiver's expression tree.
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*/
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- (MPExpression *)rootExpression;
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/*!
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@method indexPath
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@brief Returns the index path of the receiver in the expression tree.
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@discussion The index path is calculated by going up the expression tree
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collecting the respective index of the receiver. The indexes are
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expressed in the indexed reference frame. If any of the indexes
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exceed the respective receiver's bounds a @c NSRangeException is
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raised.
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@return The index path of the receiver in the expression tree.
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*/
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- (NSIndexPath *)indexPath;
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// Subscripting is supported in the indexed reference frame
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- (id)objectAtIndexedSubscript:(NSUInteger)idx;
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#pragma mark Working With Expressions
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/*!
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@method elementAtLocation:
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@brief Returns the element that is located at @c location.
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@discussion This method finds an element in the located reference frame. If
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@c location is greater or equal to the @c length of the receiver
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a @c NSRangeException is raised.
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@param location
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The location of the element to find expressed in the located
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reference frame.
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@return The element located at @c location.
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*/
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- (id<MPExpressionElement>)elementAtLocation:(NSUInteger)location;
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/*!
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@method elementAtIndexPath:
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@brief Returns the element at the specified index path.
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@discussion This method @em walks down the expression tree (including
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functions) using the specified index path and finds the
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corresponding element. The returned object can be an @c NSString,
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a @c MPFunction or an @c MPExpression depending on the element @c
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indexPath points to. If any of the indexes exceed the bounds of
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the respective receiver an @c NSRangeException is raised.
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If the index path does not contain any indexes the receiver
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itself is returned.
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@param indexPath
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The index path the required object is located at. The indexes are
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expressed in the indexed reference frame.
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@return The element located at @c indexPath. The element is not copied
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before it is returned. Be aware of the fact that any mutations
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made to the returned object are reflected in the receiver.
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*/
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- (id)elementAtIndexPath:(NSIndexPath *)indexPath;
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/*!
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@method elementsInIndexedRangePath:
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@brief Returns the elements in the specified range path.
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@discussion This method works similar to @c elementAtIndexPath: except that
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it queries multiple elements at once.
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@param rangePath
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The range path the requested objects are located at. The complete
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range path is expressed in the indexed reference frame.
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@return An array of objects specified by the range path. The returned
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elements are not copied before they are returned. Be aware that
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any mutations made to the returned objects are reflected in the
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receiver.
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*/
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- (NSArray *)elementsInIndexedRangePath:(MPRangePath *)rangePath;
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/*!
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@method indexOfElement:
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@brief Returns the index of @c element or @c NSNotFound if it was not
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found.
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@param element
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The element to find.
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@return The index of @c element expressed in the indexed reference frame.
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*/
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- (NSUInteger)indexOfElement:(id<MPExpressionElement>)element;
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#pragma mark Converting Between Indexes and Locations
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/*!
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@method indexOfElementAtLocation:offset:
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@brief Calculates the index of the element the specified location points
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to.
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@discussion The @c location is in the located reference frame whereas the
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returned value is an index. This method converts from the former
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to the latter.
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This method prefers higher indexes. This means that if the
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returned @c offset would be equal to the length of the element at
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the calculated index, insead index+1 is returned and the @c
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offset is set to @c 0.
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If the @c location exceeds the receiver's bounds a @c
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NSRangeException will be raised.
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@param location
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The location of which you want the corresponding element index.
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@param offset
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An output parameter that gets set to the offst into the symbol
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whose index is returned. If location for example points to the
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symbol @c '2' in the string element @c '123' the offset @c would
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be set to @c 1.
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@return The index of the element the location points to.
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*/
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- (NSUInteger)indexOfElementAtLocation:(NSUInteger)location offset:(out NSUInteger *)offset;
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/*!
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@method locationOfElementAtIndex:
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@brief Calculates the location of the element at @c index.
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@discussion @c index is expressed in the indexed reference frame. Use this
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method to convert an index into the located reference frame.
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If the index exceeds the receiver's number of elements a @c
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NSRangeException will be raised.
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@param index
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The index of the element that is to be converted into the length
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reference frame.
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@return The number of symbols (in the length reference frame) before the
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element at @c index.
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*/
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- (NSUInteger)locationOfElementAtIndex:(NSUInteger)index;
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/*!
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@method indexedRangeForRange:
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@brief Converts @c aRange from the located reference frame into the
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indexed reference frame.
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@discussion If the range exceeds the receiver's bounds a @c NSRangeException
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is raised.
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@param aRange
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The range to be converted. Expressed in the located reference
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frame.
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@return @c aRange converted into the indexed reference frame.
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*/
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- (NSRange)indexedRangeForRange:(NSRange)aRange;
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/*!
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@method rangeForIndexedRange:
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@brief Converts @c aRange from the indexed reference frame into the
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located reference frame.
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@discussion In the range exceeds the receiver's bounds a @c NSRangeException
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is raised.
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@param aRange
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The range to be converted. Expressed in the indexed reference
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frame.
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@return @c aRange converted into the located reference frame.
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*/
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- (NSRange)rangeForIndexedRange:(NSRange)aRange;
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- (id<MPExpressionElement>)elementAtIndex:(NSUInteger)index;
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- (id<MPExpressionElement>)symbolAtIndex:(NSUInteger)index;
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- (id<MPToken>)tokenAtIndex:(NSUInteger)index;
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#pragma mark Mutating Expressions
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- (MPExpression *)subexpressionFromIndex:(NSUInteger)from;
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- (MPExpression *)subexpressionToIndex:(NSUInteger)to;
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- (MPExpression *)subexpressionWithIndexedRange:(NSRange)range;
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/*!
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@method subexpressionFromLocation:
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@brief Creates a new expression from the specified location (inclusive)
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to the end of the receiver.
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@method appendElement:
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@brief Appends @c anElement to the receiver.
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@discussion The elements in the newly created expression are copied to the
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new expression. The location is specified in the located
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reference frame.
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If the given location exceeds the receiver's bounds a @c
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NSRangeException is raised.
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@param from
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The first location to be included in the new expression.
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@return A new expression from the given location to the end of the
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receiver.
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*/
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- (MPExpression *)subexpressionFromLocation:(NSUInteger)from;
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/*!
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@method subexpressionToLocation:
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@brief Creates a new expression from the beginning to the specified
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location (exclusive).
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@discussion The elements in the newly created expression are copied to the
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new expression. The location is specified in the located
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reference frame.
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If the given location exceeds the receiver's bounds a @c
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NSRangeException is raised.
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@param to
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The first location not to be included in the new expression (or
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the length of the new expression).
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@return A new expression with the first @c to symbols of the receiver.
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*/
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- (MPExpression *)subexpressionToLocation:(NSUInteger)to;
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/*!
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@method subexpressionWithRange:
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@brief Creates a new expression with the symbols in the specified range.
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@discussion The elements in the newly created expression are copied to the
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new exoression. The range is specified in the located reference
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frame.
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|
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If the given range exceeds the receiver's bounds a @c
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NSRangeException is raised.
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@param range
|
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The range from which to create the new expression.
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@return A new expression with the symbols in the specified range.
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*/
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- (MPExpression *)subexpressionWithRange:(NSRange)range;
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- (void)replaceElementsInIndexedRange:(NSRange)range
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withElements:(NSArray *)elements;
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- (void)replaceSymbolsInRangePath:(MPRangePath *)rangePath
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withElements:(NSArray *)elements;
|
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/*!
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@method appendElement:
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@brief Appends @c anElement to the receiver.
|
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@param anElement
|
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The element to append to the receiver.
|
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@param anElement
|
||||
The element to append to the receiver.
|
||||
*/
|
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- (void)appendElement:(id<MPExpressionElement>)anElement;
|
||||
|
||||
|
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/*!
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@method appendElements:
|
||||
@brief Appends the objects from @c elements to the receiver.
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@method appendElements:
|
||||
@brief Appends the objects from @c elements to the receiver.
|
||||
|
||||
@param elements
|
||||
The elements to append to the receiver.
|
||||
@param elements
|
||||
The elements to append to the receiver.
|
||||
*/
|
||||
- (void)appendElements:(NSArray *)elements;
|
||||
|
||||
|
||||
- (void)insertElement:(id<MPExpressionElement>)anElement
|
||||
atIndex:(NSUInteger)index;
|
||||
atIndex:(NSUInteger)index
|
||||
referenceFrame:(MPReferenceFrame)referenceFrame;
|
||||
|
||||
- (void)insertElements:(NSArray *)elements
|
||||
atIndex:(NSUInteger)index;
|
||||
|
||||
|
||||
|
||||
/*!
|
||||
@method insertElement:atLocation:
|
||||
@brief Inserts @c anElement at @c location.
|
||||
|
||||
@discussion The location is specified in the length reference frame.
|
||||
|
||||
If the given location exceeds the receiver's bounds a @c
|
||||
NSRangeException is raised.
|
||||
|
||||
@param anElement
|
||||
The element to be inserted into the receiver.
|
||||
|
||||
@param location
|
||||
The location @c anElement should be inserted at.
|
||||
*/
|
||||
- (void)insertElement:(id<MPExpressionElement>)anElement
|
||||
atLocation:(NSUInteger)location;
|
||||
atIndex:(NSUInteger)index
|
||||
referenceFrame:(MPReferenceFrame)referenceFrame;
|
||||
|
||||
|
||||
/*!
|
||||
@method insertElements:atLocation:
|
||||
@brief Inserts the elements from @c elements at @c location.
|
||||
@method deleteElementsInRange:
|
||||
@brief Removes the elements specified by @c range from the receiver.
|
||||
|
||||
@discussion The location is specified in the length reference frame.
|
||||
@discussion The range is specified in the length reference frame.
|
||||
|
||||
If the given location exceeds the receiver's bounds a @c
|
||||
NSRangeException is raised.
|
||||
If @c range exceeds the receiver's bounds a @c NSRangeException
|
||||
is raised.
|
||||
|
||||
@param elements
|
||||
The elements to be inserted into the receiver.
|
||||
|
||||
@param location
|
||||
The location the elements in @c elements should be inserted into
|
||||
the receiver.
|
||||
@param range
|
||||
The range to remove from the receiver.
|
||||
*/
|
||||
- (void)insertElements:(NSArray *)elements
|
||||
atLocation:(NSUInteger)location;
|
||||
|
||||
|
||||
- (void)deleteElementsInIndexedRange:(NSRange)range;
|
||||
|
||||
/*!
|
||||
@method deleteElementsInRange:
|
||||
@brief Removes the elements specified by @c range from the receiver.
|
||||
|
||||
@discussion The range is specified in the length reference frame.
|
||||
|
||||
If @c range exceeds the receiver's bounds a @c NSRangeException
|
||||
is raised.
|
||||
|
||||
@param range
|
||||
The range to remove from the receiver.
|
||||
*/
|
||||
- (void)deleteElementsInRange:(NSRange)range;
|
||||
|
||||
|
||||
/*!
|
||||
@method mutableElements
|
||||
@brief Returns a proxy mutable array object that responds to all methods
|
||||
defined by @c NSMutableArray.
|
||||
|
||||
@discussion Mutations on the proxy object also change the receiver. The proxy
|
||||
object does not respond to coding methods. Copying the proxy
|
||||
object will not duplicate it.
|
||||
|
||||
@return A proxy object that responds to all methods defined by @c
|
||||
NSMutableArray.
|
||||
*/
|
||||
// - (NSMutableArray *)mutableElements;
|
||||
|
||||
/* Subscripting is supported for elements in the indexed reference frame */
|
||||
- (void)setObject:(id)obj atIndexedSubscript:(NSUInteger)idx;
|
||||
- (void)deleteElementsInRange:(NSRange)range
|
||||
referenceFrame:(MPReferenceFrame)referenceFrame;
|
||||
|
||||
@end
|
||||
|
||||
|
||||
Reference in New Issue
Block a user