a11::flow::LineIndex Class Reference

Line and column lookup over one source text. More...

#include <cpp/a11/flow/diagnostic.h>

Public Member Functions
	LineIndex (std::string_view source)
Position	At (size_t offset) const
	The position at a byte offset, clamped to the end of the source.
Range	Between (size_t start, size_t end) const
	A range from two byte offsets.
size_t	LineCount () const
	How many lines the source has, counting a trailing partial line.
size_t	LineStart (int line) const
	The byte offset the 1-based line starts at, clamped to the source.

Detailed Description

Line and column lookup over one source text.

Built once per file and shared by everything that reports a position, so a diagnostic never costs a scan of the source to locate. Borrows the text, which must outlive it.

Constructor & Destructor Documentation

LineIndex()

a11::flow::LineIndex::LineIndex ( std::string_view  source )

explicit

Member Function Documentation

At()

Position a11::flow::LineIndex::At

(

size_t

offset

)

const

The position at a byte offset, clamped to the end of the source.

Between()

Range a11::flow::LineIndex::Between	(	size_t	start,
		size_t	end
	)		const

A range from two byte offsets.

LineCount()

size_t a11::flow::LineIndex::LineCount ( ) const

inline

How many lines the source has, counting a trailing partial line.

LineStart()

size_t a11::flow::LineIndex::LineStart

(

int

line

)

const

The byte offset the 1-based line starts at, clamped to the source.

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The documentation for this class was generated from the following files:

• cpp/a11/flow/diagnostic.h
• cpp/a11/flow/diagnostic.cc