#include "EXPR_API.h"
#include "EX_Error.h"
#include "EXPR_Lock.h"
#include <UT/UT_NonCopyable.h>
#include <UT/UT_SmallObject.h>
#include <UT/UT_String.h>
#include <SYS/SYS_Types.h>
#include <SYS/SYS_MemoryOrder.h>
#include <iosfwd>

Include dependency graph for EXPR.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
union	EV_TOKENVALUE
	union used to hold a token's value More...

struct	EV_SYMBOL
	class representing a symbol operated upon by expressions More...

struct	EV_TYPEDEF

struct	EV_OPERATOR
	struct describing an operator's characteristics More...

class	EV_FUNCTION

struct	EV_ChangeOpReferenceParms

class	EV_EXPRESSION

struct	EV_SYMTABLE

Macros
#define	EV_OPTIMIZE0 0 /* No optimization */

#define	EV_OPTIMIZE1 1 /* Constant folding */

#define	MAX_RECURSION 20 /* Maximum depth of recursion */

#define	EV_NHELPARGS 10 /* Maximum # of args in help */

#define	EX_USERFLAGMASK (0x03ffffff \| EV_EXFUNC_REF)


#define	OP_PLUS 1 /* + */

#define	OP_MINUS 2 /* - */

#define	OP_TIMES 3 /* * */

#define	OP_DIVIDE 4 /* / */

#define	OP_POWER 5 /* ^ */

#define	OP_MOD 6 /* % */

#define	OP_NOT 7 /* ! */

#define	OP_EQ 8 /* == */

#define	OP_NE 9 /* != */

#define	OP_LT 10 /* < */

#define	OP_LE 11 /* <= */

#define	OP_GT 12 /* > */

#define	OP_GE 13 /* >= */

#define	OP_LOGAND 14 /* && (logical and) */

#define	OP_LOGOR 15 /* \|\| (logical or) */

#define	OP_COMMA 16 /* , almost a NOP */

#define	OP_QUESTION 20 /* ? */

#define	OP_COLON 21 /* : */

#define	OP_AND 22 /* & */

#define	OP_OR 23 /* \| */

#define	OP_DOT 24 /* . */

#define	OP_TILDE 25 /* ~ */

#define	OP_AT 26 /* @ */

#define	OP_SBRACKET 30 /* [ end square bracket implied */

#define	OP_BRACE 31 /* { end brace implied */

#define	OP_EQUATE 32 /* = */

#define	MAX_OPERATOR_TOKEN 32


#define	EV_SYMTRANSIENT 0x04000000
	Symbol is result of operation. More...

#define	EV_SYMCONSTANT 0x08000000
	Symbol has a constant value. More...

#define	EV_FLAGS_SET 0x10000000
	User flags have been set. More...

#define	EV_SYMEXPAND 0x20000000
	String should be expanded. More...

#define	EV_EXFUNC_REF 0x40000000
	Refers to an expression function. More...

#define	EV_FOR_EXFUNC 0x80000000


#define	EV_TYPEFLOAT 0
	Float type of symbol. More...

#define	EV_TYPESTRING 1
	String type of symbol. More...

#define	EV_TYPEUNIXVAR 2
	Unix variable type. More...

#define	EV_TYPEEXPANDVAR 4
	Variable of form ${foo$x}. More...

#define	EV_TYPEVECTOR 5
	Vector. More...

#define	EV_TYPEMATRIX 6


#define	EV_TYPE_LOCAL_VAR 10
	A node local variable. More...

#define	EV_TYPE_UNRESOLVED_VAR 11
	An unknown variable. More...

#define	EV_TYPE_DEFINE 12
	A node local variable. More...

#define	EV_TYPE_GEOATTRIBUTE 13
	An attribute reference. More...

#define	EV_TYPE_GLOBAL_VAR 20
	A global variable. More...

#define	EV_TYPE_CPPSYMBOL 45
	A symbol inside a function. More...

#define	EV_TYPE_UNRESOLVED_CPPSYMBOL 46


#define	EV_START_FN(name)

#define	EV_START_FNNA(name)

#define	EV_START_FUNC(name)

#define	EV_END_FN(answer) result->value.fval = (answer)

#define	EV_END_FNS(answer) result->value.sval = (answer)

Typedefs
typedef char (	ev_Expander )(const char *str, int thread)

typedef void(*	EXPRopDependencyCallback )(EV_FUNCTION me, EV_SYMBOL argv, void ref_id)

typedef void(*	EXPRopChangeRefCallback )(EV_FUNCTION me, EV_SYMBOL argv, char new_args[], const char new_fullpath, const char old_fullpath, const char old_cwd, const char chan_name, const char *old_chan_name)

typedef void(*	EXPRfuncCallback )(EV_FUNCTION me, EV_SYMBOL result, EV_SYMBOL **argv, int thread, unsigned &func_flags)


typedef struct EV_TYPEDEF	EV_TYPEDEF

typedef struct EV_OPERATOR	EV_OPERATOR

typedef struct EV_FUNCHELP	EV_FUNCHELP


typedef struct EV_SYMTABLE	EV_SYMTABLE

Enumerations
enum	EV_InlineFuncReturnType { EV_EXPR_RETURN_NONE, EV_EXPR_RETURN_FLOAT, EV_EXPR_RETURN_STRING, EV_EXPR_RETURN_VECTOR, EV_EXPR_RETURN_MATRIX }

Functions
EXPR_API void	ev_InitFloat ()

EXPR_API void	ev_InitString ()
	initialize string operations More...

EXPR_API void	ev_InitVariable ()

EXPR_API void	ev_InitVector ()
	initialize vector operations More...

EXPR_API void	ev_InitMatrix ()
	initialize matrix operations More...

EXPR_API void	ev_InitUserFunc ()

EXPR_API void	ev_PrintHelp (std::ostream &os, const char match, const char keyword, bool full_match_only=false)

EXPR_API int	ev_GetNFunctions ()

EXPR_API EV_FUNCTION *	ev_GetFunction (int i)

EXPR_API EV_TYPEDEF *	ev_GetTypeDef (int key)

EXPR_API int	ev_FindFunction (const char *name)

EXPR_API void	ev_SetFunctionDependencyCallbacks (const char *func, EXPRopDependencyCallback depend_cb, EXPRopChangeRefCallback changeref_cb)

EXPR_API EV_EXPRESSION *	ev_AllocExpr (EV_InlineFuncReturnType rettype)

EXPR_API int	ev_ChangeExpr (EV_EXPRESSION expr, const char source)

EXPR_API void	ev_UnresolveVars (EV_EXPRESSION *expr, int thread)

EXPR_API fpreal	ev_EvaluateFloat (EV_EXPRESSION *expr, int thread)

EXPR_API void	ev_EvaluateString (UT_String &result, EV_EXPRESSION *expr, int thread)

EXPR_API int	ev_EvaluateVector (EV_EXPRESSION *expr, ev_Vector &result, int thread)

EXPR_API int	ev_EvaluateMatrix (EV_EXPRESSION *expr, ev_Matrix &result, int thread)

EXPR_API void	ev_FreeExpr (EV_EXPRESSION *expr)

EXPR_API void	ev_UpdateOpDependency (EV_EXPRESSION expr, void ref_id, int thread)

EXPR_API int	ev_ChangeOpReference (EV_EXPRESSION expr, const char new_fullpath, const char old_fullpath, const char old_cwd, const char chan_name, const char old_chan_name, int thread)

EXPR_API EV_SYMBOL *	ev_Evaluate (EV_EXPRESSION *expr, EV_InlineFuncReturnType func_ret_type, int thread)

EXPR_API void	EXPRftoa (UT_WorkBuffer &buf, fpreal v)

EXPR_API void	ev_SetExpander (ev_Expander expander)


EXPR_API void	ev_AddType (EV_TYPEDEF *type)

EXPR_API void	ev_AddVariableType (EV_TYPEDEF *type, int atEnd)

EXPR_API void	ev_DeleteVariableType (EV_TYPEDEF *type)

EXPR_API void	ev_AddOperator (EV_OPERATOR *op, int level)

EXPR_API void	ev_AddFunction (EV_FUNCTION *func)

EXPR_API void	ev_DeleteFunction (EV_FUNCTION *func)

EXPR_API void	ev_SetOptimization (int level)


EXPR_API void	ev_SetFunctionInstanceAllocator (const char function, void (alloc)(), void(free)(void *))
	Functions for supplying state data for custom expressions. More...

EXPR_API void *	ev_GetFunctionData (int thread)


EXPR_API bool	ev_SaveCompiledCode (EV_EXPRESSION *expr, std::ostream &os, int thread)

EXPR_API bool	ev_LoadCompiledCode (EV_EXPRESSION *expr, UT_IStream &is, int thread)


EXPR_API EV_SYMBOL *	ev_AllocSymbol (int type, int thread)

EXPR_API void	ev_FreeSymbol (EV_SYMBOL *symbol, int thread)


EXPR_API void	ev_setSafeMode (bool safe_mode)

EXPR_API bool	ev_isInSafeMode ()

EXPR_API bool	ev_isKeyword (const char *string)

Macro Definition Documentation

#define EV_END_FN ( answer ) result->value.fval = (answer)

Handy macros for defining expression functions. They only differ by which function parameters are supplied to avoid unused parameter warnings.

Definition at line 221 of file EXPR.h.

#define EV_END_FNS ( answer ) result->value.sval = (answer)

Handy macros for defining expression functions. They only differ by which function parameters are supplied to avoid unused parameter warnings.

Definition at line 223 of file EXPR.h.

#define EV_EXFUNC_REF 0x40000000

Refers to an expression function.

Definition at line 83 of file EXPR.h.

#define EV_FLAGS_SET 0x10000000

User flags have been set.

Definition at line 81 of file EXPR.h.

#define EV_FOR_EXFUNC 0x80000000

Symbol is to be used by expr func

Definition at line 84 of file EXPR.h.

#define EV_NHELPARGS 10 /* Maximum # of args in help */

Definition at line 36 of file EXPR.h.

#define EV_OPTIMIZE0 0 /* No optimization */

Definition at line 31 of file EXPR.h.

#define EV_OPTIMIZE1 1 /* Constant folding */

Definition at line 32 of file EXPR.h.

#define EV_START_FN ( name )

Value:

static void name(EV_FUNCTION *, EV_SYMBOL *result,\

EV_SYMBOL **argv, int thread, unsigned &func_flags)

EV_FUNCTION

Definition: EXPR.h:234

result

**But if you need a result

Definition: thread.h:622

name

GLuint const GLchar * name

Definition: glcorearb.h:786

EV_SYMBOL

class representing a symbol operated upon by expressions

Definition: EXPR.h:159

thread

**Note that the tasks the is the thread number *for the or if it s being executed by a non pool thread(this *can happen in cases where the whole pool is occupied and the calling *thread contributes to running the work load).**Thread pool.Have fun

Handy macros for defining expression functions. They only differ by which function parameters are supplied to avoid unused parameter warnings.

Examples:: expr/functions.C.

Definition at line 212 of file EXPR.h.

#define EV_START_FNNA ( name )

Value:

static void name(EV_FUNCTION *, EV_SYMBOL *result, \

EV_SYMBOL **, int thread, unsigned &func_flags)

EV_FUNCTION

Definition: EXPR.h:234

result

**But if you need a result

Definition: thread.h:622

name

GLuint const GLchar * name

Definition: glcorearb.h:786

EV_SYMBOL

class representing a symbol operated upon by expressions

Definition: EXPR.h:159

thread

**Note that the tasks the is the thread number *for the or if it s being executed by a non pool thread(this *can happen in cases where the whole pool is occupied and the calling *thread contributes to running the work load).**Thread pool.Have fun

Handy macros for defining expression functions. They only differ by which function parameters are supplied to avoid unused parameter warnings.

Definition at line 215 of file EXPR.h.

#define EV_START_FUNC ( name )

Value:

static void name(EV_FUNCTION *func, EV_SYMBOL *result,\

EV_SYMBOL **argv, int thread, unsigned &func_flags)

EV_FUNCTION

Definition: EXPR.h:234

result

**But if you need a result

Definition: thread.h:622

name

GLuint const GLchar * name

Definition: glcorearb.h:786

EV_SYMBOL

class representing a symbol operated upon by expressions

Definition: EXPR.h:159

thread

**Note that the tasks the is the thread number *for the or if it s being executed by a non pool thread(this *can happen in cases where the whole pool is occupied and the calling *thread contributes to running the work load).**Thread pool.Have fun

func

GLenum func

Definition: glcorearb.h:783

Handy macros for defining expression functions. They only differ by which function parameters are supplied to avoid unused parameter warnings.

Definition at line 218 of file EXPR.h.

#define EV_SYMCONSTANT 0x08000000

Symbol has a constant value.

Definition at line 80 of file EXPR.h.

#define EV_SYMEXPAND 0x20000000

String should be expanded.

Definition at line 82 of file EXPR.h.

#define EV_SYMTRANSIENT 0x04000000

Symbol is result of operation.

These flags are common to symbols, operators and functions

NOTE: The high 8 bits of the flag are reserved for internal use User flags should start at not go higher than 0x800000

Note: when changing this definition, update EX_USERFLAGMASK

Definition at line 79 of file EXPR.h.

#define EV_TYPE_CPPSYMBOL 45

A symbol inside a function.

Definition at line 115 of file EXPR.h.

#define EV_TYPE_DEFINE 12

A node local variable.

These types are used in Houdini outside of EXPR. DON'T CHANGE THESE VALUES - They are saved as ints for compiled expressions.

Definition at line 112 of file EXPR.h.

#define EV_TYPE_GEOATTRIBUTE 13

An attribute reference.

Definition at line 113 of file EXPR.h.

#define EV_TYPE_GLOBAL_VAR 20

A global variable.

Definition at line 114 of file EXPR.h.

#define EV_TYPE_LOCAL_VAR 10

A node local variable.

These types are used in Houdini outside of EXPR. DON'T CHANGE THESE VALUES - They are saved as ints for compiled expressions.

Definition at line 110 of file EXPR.h.

#define EV_TYPE_UNRESOLVED_CPPSYMBOL 46

An unknown function symbol

Definition at line 116 of file EXPR.h.

#define EV_TYPE_UNRESOLVED_VAR 11

An unknown variable.

Definition at line 111 of file EXPR.h.

#define EV_TYPEEXPANDVAR 4

Variable of form ${foo$x}.

Definition at line 102 of file EXPR.h.

#define EV_TYPEFLOAT 0

Float type of symbol.

Implicit types known by expression language

The type identifiers must be positive unique integers
Eventhough Variables are handled as a special case, the type identifier for each variable type must be unique
It is suggested that applications start their typedefs identifiers 10 or greater. The identifiers do not have to be sequential.

DON'T CHANGE THESE VALUES - They are saved as ints for compiled expressions.

Definition at line 99 of file EXPR.h.

#define EV_TYPEMATRIX 6

Matrix

Definition at line 104 of file EXPR.h.

#define EV_TYPESTRING 1

String type of symbol.

Definition at line 100 of file EXPR.h.

#define EV_TYPEUNIXVAR 2

Unix variable type.

Definition at line 101 of file EXPR.h.

#define EV_TYPEVECTOR 5

Vector.

Definition at line 103 of file EXPR.h.

#define EX_USERFLAGMASK (0x03ffffff | EV_EXFUNC_REF)

Definition at line 87 of file EXPR.h.

#define MAX_OPERATOR_TOKEN 32