Graphviz: lib/expr/expr.h File Reference

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#include <ast/ast.h>
#include <inttypes.h>
#include <expr/exparse.h>
#include <assert.h>
#include <cdt.h>
#include <cgraph/agxbuf.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <vmalloc/vmalloc.h>

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Data Structures
struct	Exid_s

struct	Exref_s

union	Exdata_u

struct	Exnode_s

struct	Exdisc_s

struct	Expr_s

Macros
#define	_EXPR_H

#define	EX_VERSION 20000101L

#define	EX_CHARSTRING (1<<0) /* '...' same as "..." */

#define	EX_UNDECLARED (1<<9) /* allow undeclared identifiers */

#define	EX_ARRAY (-3) /* getval() array elt */

#define	EX_CALL (-2) /* getval() function call elt */

#define	EX_SCALAR (-1) /* getval() scalar elt */

#define	EX_NAMELEN 32 /* default Exid_t.name length */

#define	EX_ID(n, l, i, t) {{0},(l),(i),(t),0,0,0,0,0,n}

#define	DELETE_T MINTOKEN /* exexpr() delete `type' */

#define	INTEGRAL(t) ((t)>=INTEGER&&(t)<=CHARACTER)

#define	BUILTIN(t) ((t) > MINTOKEN)

#define	F 01 /* FLOATING */

#define	I 02 /* INTEGER */

#define	S 03 /* STRING */

#define	TBITS 4

#define	TMASK ((1<<TBITS)-1)

#define	A(n, t) ((t)<<((n)TBITS)) / function arg n is type t */

#define	N(t) ((t)>>=TBITS) /* shift for next arg */

#define	exalloc(p, n) vmalloc((p)->vm, (n))

Typedefs
typedef EX_STYPE	Extype_t

typedef union Exdata_u	Exdata_t

typedef struct Exdisc_s	Exdisc_t

typedef struct Exnode_s	Exnode_t

typedef struct Expr_s	Expr_t

typedef struct Exref_s	Exref_t

typedef void(*	Exerror_f) (Expr_t , Exdisc_t , int, const char *,...)

typedef void(*	Exexit_f) (Expr_t , Exdisc_t , int)

typedef struct Exid_s	Exid_t

Functions
Exnode_t *	excast (Expr_t , Exnode_t , long, Exnode_t *, int)

Exnode_t *	exnoncast (Exnode_t *)

void	exclose (Expr_t *, int)

int	excomp (Expr_t p, const char name, int line, FILE fp, char prefix)

char *	excontext (Expr_t , char , int)

int	exdump (Expr_t , Exnode_t , agxbuf *)

void	exerror (const char *,...)

void	exwarn (const char *,...)

Extype_t	exeval (Expr_t , Exnode_t , void *)

Exnode_t *	exexpr (Expr_t , const char , Exid_t *, int)

void	exfreenode (Expr_t , Exnode_t )

Exnode_t *	exnewnode (Expr_t , int, int, long, Exnode_t , Exnode_t *)

char *	exnospace (void)

Expr_t *	exopen (Exdisc_t *)

int	expop (Expr_t *)

int	expush (Expr_t , const char , int, FILE *)

int	extoken_fn (Expr_t *)

char *	exstring (Expr_t , char )

void *	exstralloc (Expr_t *, size_t)

char *	extype (long int)

Extype_t	exzero (long int)

char *	exopname (int)

void	exinit (void)

char *	extypename (Expr_t *p, long)

int	exisAssign (Exnode_t *)

static char *	exprintf (Vmalloc_t vm, const char fmt,...)

Macro Definition Documentation

◆ _EXPR_H

#define _EXPR_H

Definition at line 23 of file expr.h.

◆ A

#define A	(	n,
		t
	)	((t)<<((n)TBITS)) / function arg n is type t */

Definition at line 76 of file expr.h.

◆ BUILTIN

#define BUILTIN ( t ) ((t) > MINTOKEN)

Definition at line 58 of file expr.h.

◆ DELETE_T

#define DELETE_T MINTOKEN /* exexpr() delete `type' */

Definition at line 55 of file expr.h.

◆ EX_ARRAY

#define EX_ARRAY (-3) /* getval() array elt */

Definition at line 47 of file expr.h.

◆ EX_CALL

#define EX_CALL (-2) /* getval() function call elt */

Definition at line 48 of file expr.h.

◆ EX_CHARSTRING

#define EX_CHARSTRING (1<<0) /* '...' same as "..." */

Definition at line 44 of file expr.h.

◆ EX_ID

#define EX_ID	(	n,
		l,
		i,
		t
	)	{{0},(l),(i),(t),0,0,0,0,0,n}

Definition at line 53 of file expr.h.

◆ EX_NAMELEN

#define EX_NAMELEN 32 /* default Exid_t.name length */

Definition at line 51 of file expr.h.

◆ EX_SCALAR

#define EX_SCALAR (-1) /* getval() scalar elt */

Definition at line 49 of file expr.h.

◆ EX_UNDECLARED

#define EX_UNDECLARED (1<<9) /* allow undeclared identifiers */

Definition at line 45 of file expr.h.

◆ EX_VERSION

#define EX_VERSION 20000101L

Definition at line 38 of file expr.h.

◆ exalloc

#define exalloc	(	p,
		n
	)	vmalloc((p)->vm, (n))

Definition at line 79 of file expr.h.

◆ F

#define F 01 /* FLOATING */

Definition at line 70 of file expr.h.

◆ I

#define I 02 /* INTEGER */

Definition at line 71 of file expr.h.

◆ INTEGRAL

#define INTEGRAL ( t ) ((t)>=INTEGER&&(t)<=CHARACTER)

Definition at line 57 of file expr.h.

◆ N

#define N ( t ) ((t)>>=TBITS) /* shift for next arg */

Definition at line 77 of file expr.h.

◆ S

#define S 03 /* STRING */

Definition at line 72 of file expr.h.

◆ TBITS

#define TBITS 4

Definition at line 74 of file expr.h.

◆ TMASK

#define TMASK ((1<<TBITS)-1)

Definition at line 75 of file expr.h.

Typedef Documentation

◆ Exdata_t

typedef union Exdata_u Exdata_t

Definition at line 83 of file expr.h.

◆ Exdisc_t

typedef struct Exdisc_s Exdisc_t

Definition at line 84 of file expr.h.

◆ Exerror_f

typedef void(* Exerror_f) (Expr_t *, Exdisc_t *, int, const char *,...)

Definition at line 89 of file expr.h.

◆ Exexit_f

typedef void(* Exexit_f) (Expr_t *, Exdisc_t *, int)

Definition at line 90 of file expr.h.

◆ Exid_t

typedef struct Exid_s Exid_t

◆ Exnode_t

typedef struct Exnode_s Exnode_t

Definition at line 85 of file expr.h.

◆ Expr_t

typedef struct Expr_s Expr_t

Definition at line 86 of file expr.h.

◆ Exref_t

typedef struct Exref_s Exref_t

Definition at line 87 of file expr.h.

◆ Extype_t

typedef EX_STYPE Extype_t

Definition at line 81 of file expr.h.

Function Documentation

◆ excast()

Exnode_t * excast	(	Expr_t *	,
		Exnode_t *	,
		long	,
		Exnode_t *	,
		int
	)

extern

Referenced by exexpr(), and prformat().

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◆ exclose()

void exclose	(	Expr_t *	,
		int
	)

extern

Referenced by exopen(), and freeCompileProg().

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◆ excomp()

int excomp	(	Expr_t *	p,
		const char *	name,
		int	line,
		FILE *	fp,
		char *	prefix
	)

extern

Compile an expression

The callee takes ownership of the pointer prefix and will free it during expop or exclose.

Parameters

p	Program structure to store result in
name	Filename of originating source file
line	Line number of originating source file
fp	Handle to source file
prefix	Optional program text to include ahead of the file content

Returns: 0 on success

Referenced by compile().

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◆ excontext()

char * excontext	(	Expr_t *	p,
		char *	buf,
		int	n
	)

extern

Definition at line 27 of file excontext.c.

References gv_isspace().

Referenced by make_msg().

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◆ exdump()

int exdump	(	Expr_t *	ex,
		Exnode_t *	node,
		agxbuf *	xb
	)

extern

Definition at line 714 of file excc.c.

References agxbprint(), agxbputc(), Exnode_s::data, dtfirst, dtnext, EX_CC_DUMP, exccclose(), exccopen(), Exccdisc_s::flags, gen(), Exid_s::lex, Exid_s::name, PROCEDURE, Expr_s::symbols, Exccdisc_s::text, and Exid_s::value.

Referenced by deparse().

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◆ exerror()

void exerror	(	const char *	format,
			...
	)

extern

Definition at line 62 of file exerror.c.

References expr, format, free(), make_msg(), and Exstate_s::program.

Referenced by addItem(), assignable(), cloneGraph(), cloneO(), cloneSubg(), closeFile(), convert(), copy(), deref(), eval(), ex_error(), exnospace(), exsubstr(), extoken_fn(), freadFile(), fwriteFile(), getArg(), getval(), lookup(), nxtAttr(), openFile(), prformat(), print(), readFile(), readLine(), refval(), scan(), scformat(), setval(), stringOf(), strToTvtype(), toKind(), tvtypeToStr(), typeChk(), writeFile(), xConvert(), and xPrint().

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◆ exeval()

Extype_t exeval	(	Expr_t *	ex,
		Exnode_t *	exnode,
		void *	env
	)

extern

Definition at line 1965 of file exeval.c.

References Exnode_s::compiled, eval(), FLOATING, EX_STYPE::floating, Exnode_s::floating, EX_STYPE::integer, Exnode_s::integer, RETURN, STRING, EX_STYPE::string, Exnode_s::string, and Exnode_s::type.

Referenced by eval(), evalEdge(), evalNode(), gvpr_core(), and prformat().

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◆ exexpr()

Exnode_t * exexpr	(	Expr_t *	ex,
		const char *	name,
		Exid_t *	sym,
		int	type
	)

extern

Definition at line 26 of file exexpr.c.

References Exnode_s::data, DELETE_T, dtmatch, excast(), exfreenode(), Exid_s::lex, NAME, NULL, PROCEDURE, Expr_s::symbols, type, and Exid_s::value.

Referenced by compile().

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◆ exfreenode()

void exfreenode	(	Expr_t *	,
		Exnode_t *
	)

extern

Referenced by exexpr(), if(), and if().

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◆ exinit()

void exinit ( void )

extern

Referenced by compileProg().

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◆ exisAssign()

int exisAssign ( Exnode_t * )

extern

Referenced by checkGuard().

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◆ exnewnode()

Exnode_t * exnewnode	(	Expr_t *	,
		int	,
		int	,
		long	,
		Exnode_t *	,
		Exnode_t *
	)

extern

◆ exnoncast()

Exnode_t * exnoncast ( Exnode_t * )

extern

Referenced by checkGuard().

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◆ exnospace()

char * exnospace ( void )

extern

Definition at line 25 of file exnospace.c.

References exerror().

Referenced by eval(), exprintf(), exsplit(), extoken_fn(), extokens(), getdyn(), if(), str_add(), str_and(), str_ior(), str_mod(), str_mpy(), and str_xor().

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◆ exopen()

Expr_t * exopen ( Exdisc_t * disc )

extern

Definition at line 28 of file exopen.c.

References dtinsert, dtopen(), Dtset, exbuiltin, exclose(), Expr_s::file, Expr_s::id, Exid_s::name, PROCEDURE, setcontext, Exdisc_s::symbols, Expr_s::symbols, Expr_s::vm, and vmopen().

Referenced by compileProg().

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◆ exopname()

char * exopname ( int op )

extern

Definition at line 58 of file excc.c.

References AND, EQ, GE, LE, LSH, NE, OR, and RSH.

Referenced by gen().

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◆ expop()

int expop ( Expr_t * )

extern

Referenced by lex().

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◆ exprintf()

static char * exprintf	(	Vmalloc_t *	vm,
		const char *	fmt,
			...
	)

inlinestatic

Construct a vmalloc-backed string.

Parameters

vm	Allocator to use.
fmt	printf-style format sting.
...	printf-style varargs.

Returns: Dynamically allocated string.

Definition at line 271 of file expr.h.

References exnospace(), len(), NULL, and vmalloc().

Referenced by eval().

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◆ expush()

int expush	(	Expr_t *	,
		const char *	,
		int	,
		FILE *
	)

extern

Referenced by extoken_fn().

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◆ exstralloc()

void * exstralloc	(	Expr_t *	ex,
		size_t	sz
	)

extern

Definition at line 2008 of file exeval.c.

References vmalloc().

Referenced by bbOf(), toLower(), toUpper(), and xyOf().

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◆ exstring()

char * exstring	(	Expr_t *	ex,
		char *	s
	)

extern

Definition at line 2000 of file exeval.c.

References vmstrdup().

Referenced by bbOf(), canon(), colorx(), nameOf(), readLine(), and xyOf().

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◆ extoken_fn()

int extoken_fn ( Expr_t * ex )

extern

Definition at line 311 of file extoken.c.

References agxbclear(), agxbput(), agxbputc(), agxbuse(), AND, CHARACTER, chrtoi(), DEC, DECLARE, dtinsert, dtmatch, dtview(), DYNAMIC, EQ, error_info, EX_CHARSTRING, ex_lval, EX_NAMELEN, exerror(), exnospace(), expr, expush(), extoken_fn(), exunlex, FLOATING, EX_STYPE::floating, GE, gv_isalnum(), gv_isalpha(), gv_isdigit(), gv_isspace(), gv_isxdigit(), ID, EX_STYPE::id, id_string, INC, Exid_s::index, Exstate_s::instatic, INTEGER, EX_STYPE::integer, Exid_s::isstatic, LABEL, LE, lex, Exid_s::lex, Error_info_s::line, LSH, NAME, Exid_s::name, NE, Exstate_s::nolabel, NULL, EX_STYPE::op, OR, PRAGMA, RSH, setcontext, Exstate_s::statics, streq(), stresc(), STRING, EX_STYPE::string, Expr_s::symbols, UNREACHABLE, UNSIGNED, Expr_s::vm, and vmstrdup().

Referenced by extoken_fn().

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◆ extype()

char * extype ( long int type )

extern

Definition at line 24 of file extype.c.

References FLOATING, STRING, type, and UNSIGNED.

Referenced by gen(), and global().

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◆ extypename()

char * extypename	(	Expr_t *	p,
		long
	)

extern

Referenced by xConvert(), and xPrint().

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◆ exwarn()

void exwarn	(	const char *	format,
			...
	)

extern

Definition at line 79 of file exerror.c.

References ERROR_WARNING, expr, format, free(), make_msg(), and Exstate_s::program.

Referenced by exsub(), readFile(), and writeFile().

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◆ exzero()

Extype_t exzero ( long int type )

extern

Definition at line 24 of file exzero.c.

References expr, FLOATING, EX_STYPE::floating, INTEGER, EX_STYPE::integer, Exstate_s::nullstring, STRING, EX_STYPE::string, type, and UNSIGNED.

Referenced by eval(), getdyn(), and refval().

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Data Structures

Macros

Typedefs

Functions

Macro Definition Documentation

◆ _EXPR_H

◆ A

◆ BUILTIN

◆ DELETE_T

◆ EX_ARRAY

◆ EX_CALL

◆ EX_CHARSTRING

◆ EX_ID

◆ EX_NAMELEN

◆ EX_SCALAR

◆ EX_UNDECLARED

◆ EX_VERSION

◆ exalloc

◆ F

◆ I

◆ INTEGRAL

◆ N

◆ S

◆ TBITS

◆ TMASK

Typedef Documentation

◆ Exdata_t

◆ Exdisc_t

◆ Exerror_f

◆ Exexit_f

◆ Exid_t

◆ Exnode_t

◆ Expr_t

◆ Exref_t

◆ Extype_t

Function Documentation

◆ excast()

◆ exclose()

◆ excomp()

◆ excontext()

◆ exdump()

◆ exerror()

◆ exeval()

◆ exexpr()

◆ exfreenode()

◆ exinit()

◆ exisAssign()

◆ exnewnode()

◆ exnoncast()

◆ exnospace()

◆ exopen()

◆ exopname()

◆ expop()

◆ exprintf()

◆ expush()

◆ exstralloc()

◆ exstring()

◆ extoken_fn()

◆ extype()

◆ extypename()

◆ exwarn()

◆ exzero()