#
# Used for fast access to each line when rendering parts of the `string`.
var line_starts = new Array[Int]
+
+ # Extract a given line excluding the line-terminators characters.
+ #
+ # `line_number` starts at 1 for the first line.
+ fun get_line(line_number: Int): String do
+ if line_number > line_starts.length then return ""
+ var line_start = line_starts[line_number-1]
+ var line_end = line_start
+ var string = self.string
+ while line_end+1 < string.length and string.chars[line_end+1] != '\n' and string.chars[line_end+1] != '\r' do
+ line_end += 1
+ end
+ return string.substring(line_start, line_end-line_start+1)
+ end
end
# A location inside a source file
end
end
+ # Initialize a location corresponding to an opaque file.
+ #
+ # The path is used as is and is not open nor read.
+ init opaque_file(path: String)
+ do
+ var source = new SourceFile.from_string(path, "")
+ init(source, 0, 0, 0, 0)
+ end
+
# The index in the start character in the source
fun pstart: Int do return file.line_starts[line_start-1] + column_start-1
if line_start == loc.line_start then
if column_start < loc.column_start then return false
- if column_start > loc.column_end then return false
+ if line_start == loc.line_end and column_start > loc.column_end then return false
end
if line_end == loc.line_end and column_end > loc.column_end then return false
# * `"0;32"` for green
fun colored_line(color: String): String
do
- var esc = 27.ascii
+ var esc = 27.code_point
var def = "{esc}[0m"
var col = "{esc}[{color}m"