PART 37: Alignment

[ #768. 更多...

宏定义
#define	upart(x)   mem[x + heightoffset].int_
	[p286#769] pointer to <uj> token list. 更多...
#define	vpart(x)   mem[x + depthoffset].int_
	[p286#769] pointer to <vj> token list. 更多...
#define	extrainfo(x)   info(x + listoffset)
	[p286#769] info to remember during template. 更多...
#define	preamble   link(alignhead)
	[p287#770] the current preamble list. 更多...
#define	alignstacknodesize   5
#define	spancode   256
#define	crcode   257
#define	crcrcode   (crcode + 1)
#define	endtemplatetoken   (CS_TOKEN_FLAG + FROZEN_END_TEMPLATE)
#define	spannodesize   2

函数
void	align_init ()
	[#771] 更多...
long	tex_round (double d)
void	pushalignment (void)
void	popalignment (void)
void	getpreambletoken (void)
void	initalign (void)
	[#774] When \halign or \valign has been scanned, get everything off to a good start. 更多...
void	initspan (HalfWord p)
void	initrow (void)
void	initcol (void)
Boolean	fincol (void)
	[#791] 更多...
void	finrow (void)
void	finalign (void)
void	alignpeek (void)

变量
Pointer	curalign
	[#770] current position in preamble list. 更多...
Pointer	curspan
	[#770] start of currently spanned columns in preamble list. 更多...
Pointer	curloop
	[#770] place to copy when extending a periodic preamble. 更多...
Pointer	alignptr
	[#770] most recently pushed-down alignment stack node. 更多...
Pointer	curhead
	[#770] adjustment list pointers. 更多...
Pointer	curtail

详细描述

[ #768.

Alignment. ]

宏定义说明

alignstacknodesize

#define alignstacknodesize   5

crcode

#define crcode   257

crcrcode

#define crcrcode   (crcode + 1)

endtemplatetoken

#define endtemplatetoken   (CS_TOKEN_FLAG + FROZEN_END_TEMPLATE)

extrainfo

#define extrainfo

(

x

)

info(x + listoffset)

[p286#769] info to remember during template.

preamble

#define preamble   link(alignhead)

[p287#770] the current preamble list.

spancode

#define spancode   256

spannodesize

#define spannodesize   2

upart

#define upart

(

x

)

mem[x + heightoffset].int_

[p286#769] pointer to <uj> token list.

vpart

#define vpart

(

x

)

mem[x + depthoffset].int_

[p286#769] pointer to <vj> token list.

函数说明

align_init()

void align_init

(

)

[#771]

alignpeek()

void alignpeek

(

void

)

finalign()

void finalign

(

void

)

fincol()

Boolean fincol

(

void

)

[#791]

< the alignrecord after the current one.

< temporary pointers for list manipulation

< a new span node

< a new unset box

< natural width

< order of infinity

< span counter

[#792] If the preamble list has been traversed, check that the row has ended.

[#793] Lengthen the preamble periodically

[#794] Copy the templates from node cur loop into node p

end [#794]

end [#793]

[#796] Package an unset box for the current column and record its width

[#798] Update width entry for spanned columns.

[#659] Determine the stretch order.

[#655] Determine the shrink order.

end [#796]

[#795] Copy the tabskip glue between columns.

finrow()

void finrow

(

void

)

getpreambletoken()

void getpreambletoken

(

void

)

initalign()

void initalign

(

void

)

[#774] When \halign or \valign has been scanned, get everything off to a good start.

This mostly involves scanning the preamble and putting its information into the preamble list.

< warning_index value for error messages.

< for short-term temporary use.

[#779] Scan preamble text until cur cmd is tab mark or car ret, looking for changes in the tabskip glue; append an alignrecord to the preamble list.

[#783] Scan the template ⟨ u_j ⟩, putting the resulting token list in hold head.

end [#783]

[#784] Scan the template ⟨ v_j ⟩, putting the resulting token list in hold_head

end [#784]

3nd [#779]

initcol()

void initcol

(

void

)

initrow()

void initrow

(

void

)

initspan()

void initspan

(

HalfWord

p

)

popalignment()

void popalignment

(

void

)

pushalignment()

void pushalignment

(

void

)

tex_round()

long tex_round

(

double

d

)

变量说明

alignptr

Pointer alignptr

[#770] most recently pushed-down alignment stack node.

curalign

Pointer curalign

[#770] current position in preamble list.

curhead

Pointer curhead

[#770] adjustment list pointers.

curloop

Pointer curloop

[#770] place to copy when extending a periodic preamble.

curspan

Pointer curspan

[#770] start of currently spanned columns in preamble list.

curtail

Pointer curtail