This module deals with creating delimiters of various sizes. The TeXbook discusses these routines on page 441-442, in the "Another subroutine sets box x to a specified variable delimiter" paragraph.
There are three main routines here. makeSmallDelim makes a delimiter in the
normal font, but in either text, script, or scriptscript style.
makeLargeDelim makes a delimiter in textstyle, but in one of the Size1,
Size2, Size3, or Size4 fonts. makeStackedDelim makes a delimiter out of
smaller pieces that are stacked on top of one another.
The functions take a parameter center, which determines if the delimiter
should be centered around the axis.
Then, there are three exposed functions. sizedDelim makes a delimiter in
one of the given sizes. This is used for things like \bigl.
customSizedDelim makes a delimiter with a given total height+depth. It is
called in places like \sqrt. leftRightDelim makes an appropriate
delimiter which surrounds an expression of a given height an depth. It is
used in \left and \right.
Methods
makeCustomSizedDelim(type: string, delim: string, height: number, center: boolean, context: Context.Context, classes: Array.<string>)privatestatic
Make a delimiter of a given height+depth, with optional centering. Here, we traverse the sequences, and create a delimiter that the sequence tells us to.
type
string
'mopen' or 'mclose'
delim
string
height
number
center
boolean
context
Context.Context
classes
Array.<string>
makeInner()privatestatic
Make an inner span with the given offset and in the given font. This is used
in makeStackedDelim to make the stacking pieces for the delimiter.
makeLargeDelim()privatestatic
Makes a large delimiter. This is a delimiter that comes in the Size1, Size2, Size3, or Size4 fonts. It is always rendered in textstyle.
makeLeftRightDelim()privatestatic
Make a delimiter for use with \left and \right, given a height and depth
of an expression that the delimiters surround.
See tex.web:14994
makeNullFence(context: *, typeopt: string)privatestatic
context
*
type
string
optional
either 'mopen', 'mclose' or null
makeSizedDelim()privatestatic
Used to create a delimiter of a specific size, where size is 1, 2, 3, or 4.
makeSmallDelim()privatestatic
Makes a small delimiter. This is a delimiter that comes in the Main-Regular font, but is restyled to either be in textstyle, scriptstyle, or scriptscriptstyle.
makeStackedDelim()privatestatic
Make a stacked delimiter out of a given delimiter, with the total height at
least heightTotal. This routine is mentioned on page 442 of the TeXbook.
traverseSequence(delim:: string)privatestatic
Traverse a sequence of types of delimiters to decide what kind of delimiter should be used to create a delimiter of the given height+depth.
delim:
string
a character value (not a command)