Struct prost_types::source_code_info::Location

pub struct Location {
    pub path: Vec<i32>,
    pub span: Vec<i32>,
    pub leading_comments: Option<String>,
    pub trailing_comments: Option<String>,
    pub leading_detached_comments: Vec<String>,
}

Fields

path: Vec<i32>

Identifies which part of the FileDescriptorProto was defined at this location.

Each element is a field number or an index. They form a path from the root FileDescriptorProto to the place where the definition. For example, this path: [ 4, 3, 2, 7, 1 ] refers to: file.message_type(3) // 4, 3 .field(7) // 2, 7 .name() // 1 This is because FileDescriptorProto.message_type has field number 4: repeated DescriptorProto message_type = 4; and DescriptorProto.field has field number 2: repeated FieldDescriptorProto field = 2; and FieldDescriptorProto.name has field number 1: optional string name = 1;

Thus, the above path gives the location of a field name. If we removed the last element: [ 4, 3, 2, 7 ] this path refers to the whole field declaration (from the beginning of the label to the terminating semicolon).

span: Vec<i32>

Always has exactly three or four elements: start line, start column, end line (optional, otherwise assumed same as start line), end column. These are packed into a single field for efficiency. Note that line and column numbers are zero-based – typically you will want to add 1 to each before displaying to a user.

leading_comments: Option<String>

If this SourceCodeInfo represents a complete declaration, these are any comments appearing before and after the declaration which appear to be attached to the declaration.

A series of line comments appearing on consecutive lines, with no other tokens appearing on those lines, will be treated as a single comment.

leading_detached_comments will keep paragraphs of comments that appear before (but not connected to) the current element. Each paragraph, separated by empty lines, will be one comment element in the repeated field.

Only the comment content is provided; comment markers (e.g. //) are stripped out. For block comments, leading whitespace and an asterisk will be stripped from the beginning of each line other than the first. Newlines are included in the output.

Examples:

optional int32 foo = 1; // Comment attached to foo. // Comment attached to bar. optional int32 bar = 2;

optional string baz = 3; // Comment attached to baz. // Another line attached to baz.

// Comment attached to qux. // // Another line attached to qux. optional double qux = 4;

// Detached comment for corge. This is not leading or trailing comments // to qux or corge because there are blank lines separating it from // both.

// Detached comment for corge paragraph 2.

optional string corge = 5; /* Block comment attached * to corge. Leading asterisks * will be removed. / / Block comment attached to * grault. */ optional int32 grault = 6;

// ignored detached comments.

trailing_comments: Option<String>

leading_detached_comments: Vec<String>

Implementations

impl Location

pub fn leading_comments(&self) -> &str

Returns the value of leading_comments, or the default value if leading_comments is unset.

pub fn trailing_comments(&self) -> &str

Returns the value of trailing_comments, or the default value if trailing_comments is unset.

Trait Implementations

impl Clone for Location

fn clone(&self) -> Location

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Location

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

Formats the value using the given formatter.

impl Default for Location

fn default() -> Self

Returns the “default value” for a type.

impl Message for Location

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited<B>(&self, buf: &mut B) -> Result<(), EncodeError>

where B: BufMut, Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited<B>(buf: B) -> Result<Self, DecodeError>

where B: Buf, Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited<B>(&mut self, buf: B) -> Result<(), DecodeError>

where B: Buf, Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Location

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Location