宏定义
#define	getxtokenoractivechar()

#define	ifnodesize 2
	number of words in stack entry for conditionals. 更多...

#define	iflinefield(x) mem[x + 1].int_
	[p182#489] 更多...

枚举
enum	ConditionPrimitives { IF_CHAR_CODE , IF_CAT_CODE , IF_INT_CODE , IF_DIM_CODE , IF_ODD_CODE , IF_VMODE_CODE , IF_HMODE_CODE , IF_MMODE_CODE , IF_INNER_CODE , IF_VOID_CODE , IF_HBOX_CODE , IF_VBOX_CODE , IF_X_CODE , IF_EOF_CODE , IF_TRUE_CODE , IF_FALSE_CODE , IF_CASE_CODE }
	[p181#487]: Conditional processing 更多...

enum	IfCode { ifcode = 1 , ficode , elsecode , orcode }
	[#489] 更多...

函数
void	cond_process_init ()
	[#490] 更多...

static void	passtext (void)
	[#494] ignores text until coming to an `\or`, `\else`, or `\fi` at level zero of `\if...\fi` nesting. 更多...

static void	changeiflimit (SmallNumber l, HalfWord p)
	[#497] changes the iflimit code corresponding to a given value of condptr. 更多...

static void	conditional (void)
	[#498] when the expand procedure encounters an if test command. 更多...

变量
Pointer	condptr
	[#489] top of the condition stack. 更多...

UChar	iflimit
	[#489] upper bound on `fi_or_else` codes 更多...

SmallNumber	curif
	[#489] type of conditional being worked on 更多...

Integer	ifline
	[#489] line where that conditional began 更多...

Integer	skipline
	[#493] skipping began here 更多...

详细描述

宏定义说明

◆ getxtokenoractivechar

#define getxtokenoractivechar ( )

值:

    (get_x_token(), ((curcmd == RELAX) && (curchr == noexpandflag))       \
                        ? (curcmd = ACTIVE_CHAR,                          \
                           cur_chr = curtok - CS_TOKEN_FLAG - ACTIVE_BASE) \
                        : (cur_chr = curchr))

◆ iflinefield

#define iflinefield ( x ) mem[x + 1].int_

[p182#489]

◆ ifnodesize

#define ifnodesize 2

number of words in stack entry for conditionals.

枚举类型说明

◆ ConditionPrimitives

enum ConditionPrimitives

[p181#487]: Conditional processing

枚举值
IF_CHAR_CODE	`\if`
IF_CAT_CODE	`\ifcat`
IF_INT_CODE	`\ifnum`
IF_DIM_CODE	`\ifdim`
IF_ODD_CODE	`\ifodd`
IF_VMODE_CODE	`\ifvmode`
IF_HMODE_CODE	`\ifhmode`
IF_MMODE_CODE	`\ifmmode`
IF_INNER_CODE	`\ifinner`
IF_VOID_CODE	`\ifvoid`
IF_HBOX_CODE	`\ifhbox`
IF_VBOX_CODE	`\ifvbox`
IF_X_CODE	`\ifx`
IF_EOF_CODE	`\ifeof`
IF_TRUE_CODE	`\iftrue`
IF_FALSE_CODE	`\iffalse`
IF_CASE_CODE	`\ifcase`

◆ IfCode

enum IfCode

[#489]

枚举值
ifcode	code for `\if`... being evaluated
ficode	code for `\fi`
elsecode	code for `\else`
orcode	code for `\or`

函数说明

◆ changeiflimit()

static void changeiflimit	(	SmallNumber	l,
		HalfWord	p
	)

static

[#497] changes the iflimit code corresponding to a given value of condptr.

◆ cond_process_init()

void cond_process_init ( )

[#490]

◆ conditional()

static void conditional ( void )

static

[#498] when the expand procedure encounters an if test command.

◆ passtext()

static void passtext ( void )

static

[#494] ignores text until coming to an \or, \else, or \fi at level zero of \if...\fi nesting.

变量说明

◆ condptr

Pointer condptr

[#489] top of the condition stack.

◆ curif

SmallNumber curif

[#489] type of conditional being worked on

◆ iflimit

UChar iflimit

[#489] upper bound on fi_or_else codes

◆ ifline

Integer ifline

[#489] line where that conditional began

◆ skipline

Integer skipline

[#493] skipping began here