pub struct LineRow { /* private fields */ }
Expand description

A row in the line number program’s resulting matrix.

Each row is a copy of the registers of the state machine, as defined in section 6.2.2.

Implementations

Create a line number row in the initial state for the given program.

“The program-counter value corresponding to a machine instruction generated by the compiler.”

An unsigned integer representing the index of an operation within a VLIW instruction. The index of the first operation is 0. For non-VLIW architectures, this register will always be 0.

The address and op_index registers, taken together, form an operation pointer that can reference any individual operation with the instruction stream.

“An unsigned integer indicating the identity of the source file corresponding to a machine instruction.”

The source file corresponding to the current machine instruction.

“An unsigned integer indicating a source line number. Lines are numbered beginning at 1. The compiler may emit the value 0 in cases where an instruction cannot be attributed to any source line.” Line number values of 0 are represented as None.

“An unsigned integer indicating a column number within a source line. Columns are numbered beginning at 1. The value 0 is reserved to indicate that a statement begins at the “left edge” of the line.”

“A boolean indicating that the current instruction is a recommended breakpoint location. A recommended breakpoint location is intended to “represent” a line, a statement and/or a semantically distinct subpart of a statement.”

“A boolean indicating that the current instruction is the beginning of a basic block.”

“A boolean indicating that the current address is that of the first byte after the end of a sequence of target machine instructions. end_sequence terminates a sequence of lines; therefore other information in the same row is not meaningful.”

“A boolean indicating that the current address is one (of possibly many) where execution should be suspended for an entry breakpoint of a function.”

“A boolean indicating that the current address is one (of possibly many) where execution should be suspended for an exit breakpoint of a function.”

Tag for the current instruction set architecture.

An unsigned integer whose value encodes the applicable instruction set architecture for the current instruction.

The encoding of instruction sets should be shared by all users of a given architecture. It is recommended that this encoding be defined by the ABI authoring committee for each architecture.

“An unsigned integer identifying the block to which the current instruction belongs. Discriminator values are assigned arbitrarily by the DWARF producer and serve to distinguish among multiple blocks that may all be associated with the same source file, line, and column. Where only one block exists for a given source position, the discriminator value should be zero.”

Execute the given instruction, and return true if a new row in the line number matrix needs to be generated.

Unknown opcodes are treated as no-ops.

Perform any reset that was required after copying the previous row.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

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

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Compare self to key and return true if they are equal.

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.