Struct bo::Operation

pub struct Operation {
    pub content: String,
    pub start_position: Position,
    pub op_type: OperationType,
}

An Operation describe a text edition at a specific start position.

An Operation can be of 2 types: either Insert or Delete, testifying of the fact that we either inserted or deleted the provided text content, starting at a given x/y position.

Fields

content: String

start_position: Position

op_type: OperationType

Implementations

impl Operation

fn mut_push(&mut self, text: &str)

Append the argument string to the Operation content

pub fn end_position(&self, document_rows_length: &[usize]) -> Position

Return the position the cursor would be at the end of the Operation.

Examples:

• an insert of “rust” starting at {0, 0} would return an end position of {3, 0}
• an insert of “rust\nrocks” starting at {0, 0} would return an end position of {4, 1}
• a deletion of “tsur” starting at {3, 0} would return an end position of {0, 0}
• a deletion of “skcor\ntsur” starting at {1, 4} would return an end position of {0, 0}

Note: this one took a long time to get right but seems to work. Check unit tests in doubt!

pub fn reversed(&self, document_rows_length: &[usize]) -> Self

Trait Implementations

impl Debug for Operation

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq<Operation> for Operation

fn eq(&self, other: &Operation) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Operation) -> bool

This method tests for !=.

impl StructuralPartialEq for Operation