expr_pylike_eval.c File Reference

#include <ctype.h>
#include <fenv.h>
#include <float.h>
#include <math.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "BLI_alloca.h"
#include "BLI_expr_pylike_eval.h"
#include "BLI_math_base.h"
#include "BLI_utildefines.h"

Go to the source code of this file.

Classes
struct	ExprOp
struct	ExprPyLike_Parsed
struct	BuiltinConstDef
struct	BuiltinOpDef
struct	KeywordTokenDef
struct	ExprParseState

Macros
#define	FAIL_IF(condition)

Functions
Public API
void	BLI_expr_pylike_free (ExprPyLike_Parsed *expr)
bool	BLI_expr_pylike_is_valid (ExprPyLike_Parsed *expr)
bool	BLI_expr_pylike_is_constant (ExprPyLike_Parsed *expr)
bool	BLI_expr_pylike_is_using_param (ExprPyLike_Parsed *expr, int index)
Stack Machine Evaluation
eExprPyLike_EvalStatus	BLI_expr_pylike_eval (ExprPyLike_Parsed *expr, const double *param_values, int param_values_len, double *r_result)
Recursive Descent Parser
static bool	parse_expr (ExprParseState *state)
static int	parse_function_args (ExprParseState *state)
static bool	parse_unary (ExprParseState *state)
static bool	parse_mul (ExprParseState *state)
static bool	parse_add (ExprParseState *state)
static BinaryOpFunc	parse_get_cmp_func (short token)
static bool	parse_cmp_chain (ExprParseState *state, BinaryOpFunc cur_func)
static bool	parse_cmp (ExprParseState *state)
static bool	parse_not (ExprParseState *state)
static bool	parse_and (ExprParseState *state)
static bool	parse_or (ExprParseState *state)
Main Parsing Function
ExprPyLike_Parsed *	BLI_expr_pylike_parse (const char *expression, const char **param_names, int param_names_len)

Expression Parser State
#define	MAKE_CHAR2(a, b)   (((a) << 8) | (b))
#define	CHECK_ERROR(condition)
#define	TOKEN_ID   MAKE_CHAR2('I', 'D')
#define	TOKEN_NUMBER   MAKE_CHAR2('0', '0')
#define	TOKEN_GE   MAKE_CHAR2('>', '=')
#define	TOKEN_LE   MAKE_CHAR2('<', '=')
#define	TOKEN_NE   MAKE_CHAR2('!', '=')
#define	TOKEN_EQ   MAKE_CHAR2('=', '=')
#define	TOKEN_AND   MAKE_CHAR2('A', 'N')
#define	TOKEN_OR   MAKE_CHAR2('O', 'R')
#define	TOKEN_NOT   MAKE_CHAR2('N', 'O')
#define	TOKEN_IF   MAKE_CHAR2('I', 'F')
#define	TOKEN_ELSE   MAKE_CHAR2('E', 'L')
typedef struct KeywordTokenDef	KeywordTokenDef
typedef struct ExprParseState	ExprParseState
static const char *	token_eq_characters = "!=><"
static const char *	token_characters = "~`!@#$%^&*+-=/\\?:;<>(){}[]|.,\"'"
static KeywordTokenDef	keyword_list []
static ExprOp *	parse_alloc_ops (ExprParseState *state, int count)
static ExprOp *	parse_add_op (ExprParseState *state, eOpCode code, int stack_delta)
static int	parse_add_jump (ExprParseState *state, eOpCode code)
static void	parse_set_jump (ExprParseState *state, int jump)
static int	opcode_arg_count (eOpCode code)
static bool	parse_add_func (ExprParseState *state, eOpCode code, int args, void *funcptr)
static bool	parse_next_token (ExprParseState *state)

Internal Types
enum	eOpCode {   OPCODE_CONST , OPCODE_FUNC1 , OPCODE_FUNC2 , OPCODE_FUNC3 ,   OPCODE_PARAMETER , OPCODE_MIN , OPCODE_MAX , OPCODE_JMP ,   OPCODE_JMP_ELSE , OPCODE_JMP_OR , OPCODE_JMP_AND , OPCODE_CMP_CHAIN }
typedef enum eOpCode	eOpCode
typedef double(*	UnaryOpFunc) (double)
typedef double(*	BinaryOpFunc) (double, double)
typedef double(*	TernaryOpFunc) (double, double, double)
typedef struct ExprOp	ExprOp

Built-In Operations
typedef struct BuiltinConstDef	BuiltinConstDef
typedef struct BuiltinOpDef	BuiltinOpDef
static BuiltinConstDef	builtin_consts []
static BuiltinOpDef	builtin_ops []
static double	op_negate (double arg)
static double	op_mul (double a, double b)
static double	op_div (double a, double b)
static double	op_add (double a, double b)
static double	op_sub (double a, double b)
static double	op_radians (double arg)
static double	op_degrees (double arg)
static double	op_log2 (double a, double b)
static double	op_lerp (double a, double b, double x)
static double	op_clamp (double arg)
static double	op_clamp3 (double arg, double minv, double maxv)
static double	op_smoothstep (double a, double b, double x)
static double	op_not (double a)
static double	op_eq (double a, double b)
static double	op_ne (double a, double b)
static double	op_lt (double a, double b)
static double	op_le (double a, double b)
static double	op_gt (double a, double b)
static double	op_ge (double a, double b)

Detailed Description

Simple evaluator for a subset of Python expressions that can be computed using purely double precision floating point values.

Supported subset:

• Identifiers use only ASCII characters.
• Literals: floating point and decimal integer.
• Constants: pi, True, False
• Operators: +, -, *, /, ==, !=, <, <=, >, >=, and, or, not, ternary if
• Functions: min, max, radians, degrees, abs, fabs, floor, ceil, trunc, int, sin, cos, tan, asin, acos, atan, atan2, exp, log, sqrt, pow, fmod

The implementation has no global state and can be used multi-threaded.

Definition in file expr_pylike_eval.c.

Macro Definition Documentation

CHECK_ERROR

#define CHECK_ERROR

(

condition

)

Value:

  if (!(condition)) { \
    return false; \
  } \
  ((void)0)

Definition at line 461 of file expr_pylike_eval.c.

FAIL_IF

#define FAIL_IF

(

condition

)

Value:

  if (condition) { \
    return EXPR_PYLIKE_FATAL_ERROR; \
  } \
  ((void)0)

MAKE_CHAR2

#define MAKE_CHAR2	(		a,
			b
	)		(((a) << 8) | (b))

Definition at line 459 of file expr_pylike_eval.c.

TOKEN_AND

#define TOKEN_AND   MAKE_CHAR2('A', 'N')

Definition at line 475 of file expr_pylike_eval.c.

TOKEN_ELSE

#define TOKEN_ELSE   MAKE_CHAR2('E', 'L')

Definition at line 479 of file expr_pylike_eval.c.

TOKEN_EQ

#define TOKEN_EQ   MAKE_CHAR2('=', '=')

Definition at line 474 of file expr_pylike_eval.c.

TOKEN_GE

#define TOKEN_GE   MAKE_CHAR2('>', '=')

Definition at line 471 of file expr_pylike_eval.c.

TOKEN_ID

#define TOKEN_ID   MAKE_CHAR2('I', 'D')

Definition at line 469 of file expr_pylike_eval.c.

TOKEN_IF

#define TOKEN_IF   MAKE_CHAR2('I', 'F')

Definition at line 478 of file expr_pylike_eval.c.

TOKEN_LE

#define TOKEN_LE   MAKE_CHAR2('<', '=')

Definition at line 472 of file expr_pylike_eval.c.

TOKEN_NE

#define TOKEN_NE   MAKE_CHAR2('!', '=')

Definition at line 473 of file expr_pylike_eval.c.

TOKEN_NOT

#define TOKEN_NOT   MAKE_CHAR2('N', 'O')

Definition at line 477 of file expr_pylike_eval.c.

TOKEN_NUMBER

#define TOKEN_NUMBER   MAKE_CHAR2('0', '0')

Definition at line 470 of file expr_pylike_eval.c.

TOKEN_OR

#define TOKEN_OR   MAKE_CHAR2('O', 'R')

Definition at line 476 of file expr_pylike_eval.c.

Typedef Documentation

BinaryOpFunc

typedef double(* BinaryOpFunc) (double, double)

Definition at line 96 of file expr_pylike_eval.c.

BuiltinConstDef

typedef struct BuiltinConstDef BuiltinConstDef

BuiltinOpDef

typedef struct BuiltinOpDef BuiltinOpDef

eOpCode

typedef enum eOpCode eOpCode

ExprOp

typedef struct ExprOp ExprOp

ExprParseState

typedef struct ExprParseState ExprParseState

KeywordTokenDef

typedef struct KeywordTokenDef KeywordTokenDef

TernaryOpFunc

typedef double(* TernaryOpFunc) (double, double, double)

Definition at line 97 of file expr_pylike_eval.c.

UnaryOpFunc

typedef double(* UnaryOpFunc) (double)

Definition at line 95 of file expr_pylike_eval.c.

Enumeration Type Documentation

eOpCode

enum eOpCode

Enumerator
OPCODE_CONST
OPCODE_FUNC1
OPCODE_FUNC2
OPCODE_FUNC3
OPCODE_PARAMETER
OPCODE_MIN
OPCODE_MAX
OPCODE_JMP
OPCODE_JMP_ELSE
OPCODE_JMP_OR
OPCODE_JMP_AND
OPCODE_CMP_CHAIN

Definition at line 68 of file expr_pylike_eval.c.

Function Documentation

BLI_expr_pylike_eval()

eExprPyLike_EvalStatus BLI_expr_pylike_eval	(	ExprPyLike_Parsed *	expr,
		const double *	param_values,
		int	param_values_len,
		double *	r_result
	)

Evaluate the expression with the given parameters. The order and number of parameters must match the names given to parse.

Definition at line 175 of file expr_pylike_eval.c.

References ExprOp::arg, BLI_array_alloca, BLI_expr_pylike_is_valid(), CLAMP_MAX, CLAMP_MIN, ExprOp::dval, EXPR_PYLIKE_DIV_BY_ZERO, EXPR_PYLIKE_FATAL_ERROR, EXPR_PYLIKE_INVALID, EXPR_PYLIKE_MATH_ERROR, EXPR_PYLIKE_SUCCESS, FAIL_IF, ExprOp::ival, ExprPyLike_Parsed::max_stack, OPCODE_CMP_CHAIN, OPCODE_CONST, OPCODE_FUNC1, OPCODE_FUNC2, OPCODE_FUNC3, OPCODE_JMP, OPCODE_JMP_AND, OPCODE_JMP_ELSE, OPCODE_JMP_OR, OPCODE_MAX, OPCODE_MIN, OPCODE_PARAMETER, ExprPyLike_Parsed::ops, and ExprPyLike_Parsed::ops_count.

Referenced by driver_evaluate_simple_expr(), expr_pylike_const_test(), expr_pylike_error_test(), TEST(), and verify_eval_result().

BLI_expr_pylike_free()

void BLI_expr_pylike_free

(

ExprPyLike_Parsed *

expr

)

Free the parsed data; NULL argument is ok.

Definition at line 128 of file expr_pylike_eval.c.

References MEM_freeN, and NULL.

Referenced by BKE_driver_invalidate_expression(), driver_compile_simple_expr(), and fcurve_free_driver().

BLI_expr_pylike_is_constant()

bool BLI_expr_pylike_is_constant

(

ExprPyLike_Parsed *

expr

)

Check if the parsed expression always evaluates to the same value.

Definition at line 142 of file expr_pylike_eval.c.

References NULL, ExprOp::opcode, OPCODE_CONST, ExprPyLike_Parsed::ops, and ExprPyLike_Parsed::ops_count.

Referenced by expr_pylike_const_test(), and parse_for_eval().

BLI_expr_pylike_is_using_param()

bool BLI_expr_pylike_is_using_param	(	ExprPyLike_Parsed *	expr,
		int	index
	)

Check if the parsed expression uses the parameter with the given index.

Definition at line 148 of file expr_pylike_eval.c.

References ExprOp::arg, ExprOp::ival, NULL, ExprOp::opcode, OPCODE_PARAMETER, ExprPyLike_Parsed::ops, and ExprPyLike_Parsed::ops_count.

Referenced by driver_check_simple_expr_depends_on_time(), and TEST().

BLI_expr_pylike_is_valid()

bool BLI_expr_pylike_is_valid

(

ExprPyLike_Parsed *

expr

)

Check if the parsing result is valid for evaluation.

Definition at line 136 of file expr_pylike_eval.c.

References NULL, and ExprPyLike_Parsed::ops_count.

Referenced by BKE_driver_has_simple_expression(), BLI_expr_pylike_eval(), driver_try_evaluate_simple_expr(), expr_pylike_const_test(), expr_pylike_parse_fail_test(), parse_for_eval(), and TEST().

BLI_expr_pylike_parse()

ExprPyLike_Parsed* BLI_expr_pylike_parse	(	const char *	expression,
		const char **	param_names,
		int	param_names_len
	)

Compile the expression and return the result.

Parse the expression for evaluation later. Returns non-NULL even on failure; use is_valid to check.

Definition at line 1082 of file expr_pylike_eval.c.

References BLI_assert, ExprPyLike_Parsed::max_stack, MEM_callocN, MEM_freeN, MEM_mallocN, ExprPyLike_Parsed::ops, ExprPyLike_Parsed::ops_count, parse_expr(), parse_next_token(), and state.

Referenced by driver_compile_simple_expr_impl(), expr_pylike_const_test(), expr_pylike_parse_fail_test(), parse_for_eval(), and TEST().

op_add()

static double op_add ( double  a, double  b  )

static

Definition at line 318 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_add().

op_clamp()

static double op_clamp ( double  arg )

static

Definition at line 348 of file expr_pylike_eval.c.

References CLAMP.

op_clamp3()

static double op_clamp3 ( double  arg, double  minv, double  maxv  )

static

Definition at line 354 of file expr_pylike_eval.c.

References CLAMP.

op_degrees()

static double op_degrees ( double  arg )

static

Definition at line 333 of file expr_pylike_eval.c.

References M_PI.

op_div()

static double op_div ( double  a, double  b  )

static

Definition at line 313 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_mul().

op_eq()

static double op_eq ( double  a, double  b  )

static

Definition at line 372 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_get_cmp_func().

op_ge()

static double op_ge ( double  a, double  b  )

static

Definition at line 397 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_get_cmp_func().

op_gt()

static double op_gt ( double  a, double  b  )

static

Definition at line 392 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_get_cmp_func().

op_le()

static double op_le ( double  a, double  b  )

static

Definition at line 387 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_get_cmp_func().

op_lerp()

static double op_lerp ( double  a, double  b, double  x  )

static

Definition at line 343 of file expr_pylike_eval.c.

References Freestyle::a, and x.

op_log2()

static double op_log2 ( double  a, double  b  )

static

Definition at line 338 of file expr_pylike_eval.c.

References Freestyle::a, and KDL::log().

op_lt()

static double op_lt ( double  a, double  b  )

static

Definition at line 382 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_get_cmp_func().

op_mul()

static double op_mul ( double  a, double  b  )

static

Definition at line 308 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_mul().

op_ne()

static double op_ne ( double  a, double  b  )

static

Definition at line 377 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_get_cmp_func().

op_negate()

static double op_negate ( double  arg )

static

Definition at line 303 of file expr_pylike_eval.c.

Referenced by parse_unary().

op_not()

static double op_not ( double  a )

static

Definition at line 367 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by parse_not().

op_radians()

static double op_radians ( double  arg )

static

Definition at line 328 of file expr_pylike_eval.c.

References M_PI.

op_smoothstep()

static double op_smoothstep ( double  a, double  b, double  x  )

static

Definition at line 360 of file expr_pylike_eval.c.

References Freestyle::a, CLAMP, t, and x.

op_sub()

static double op_sub ( double  a, double  b  )

static

Definition at line 323 of file expr_pylike_eval.c.

References Freestyle::a.

Referenced by bmo_connect_vert_pair_exec(), bmo_contextual_create_exec(), bridge_loop_pair(), and parse_add().

opcode_arg_count()

static int opcode_arg_count ( eOpCode  code )

static

Definition at line 562 of file expr_pylike_eval.c.

References BLI_assert, OPCODE_FUNC1, OPCODE_FUNC2, and OPCODE_FUNC3.

Referenced by parse_unary().

parse_add()

static bool parse_add ( ExprParseState *  state )

static

Definition at line 900 of file expr_pylike_eval.c.

References CHECK_ERROR, op_add(), op_sub(), OPCODE_FUNC2, parse_add_func(), parse_mul(), parse_next_token(), and state.

Referenced by parse_cmp(), and parse_cmp_chain().

parse_add_func()

static bool parse_add_func ( ExprParseState *  state, eOpCode  code, int  args, void *  funcptr  )

static

Definition at line 578 of file expr_pylike_eval.c.

References ExprOp::arg, BLI_assert, CHECK_ERROR, ExprOp::dval, OPCODE_CONST, OPCODE_FUNC1, OPCODE_FUNC2, OPCODE_FUNC3, parse_add_op(), ExprOp::ptr, result, and state.

Referenced by parse_add(), parse_cmp_chain(), parse_mul(), parse_not(), and parse_unary().

parse_add_jump()

static int parse_add_jump ( ExprParseState *  state, eOpCode  code  )

static

Definition at line 548 of file expr_pylike_eval.c.

References parse_add_op(), and state.

Referenced by parse_and(), parse_expr(), and parse_or().

parse_add_op()

static ExprOp* parse_add_op ( ExprParseState *  state, eOpCode  code, int  stack_delta  )

static

Definition at line 533 of file expr_pylike_eval.c.

References CLAMP_MIN, ExprOp::opcode, parse_alloc_ops(), and state.

Referenced by parse_add_func(), parse_add_jump(), parse_cmp_chain(), and parse_unary().

parse_alloc_ops()

static ExprOp* parse_alloc_ops ( ExprParseState *  state, int  count  )

static

Definition at line 520 of file expr_pylike_eval.c.

References count, MEM_reallocN, power_of_2_max_i(), and state.

Referenced by parse_add_op(), and parse_expr().

parse_and()

static bool parse_and ( ExprParseState *  state )

static

Definition at line 988 of file expr_pylike_eval.c.

References CHECK_ERROR, jump(), OPCODE_JMP_AND, parse_add_jump(), parse_next_token(), parse_not(), parse_set_jump(), state, and TOKEN_AND.

Referenced by parse_or().

parse_cmp()

static bool parse_cmp ( ExprParseState *  state )

static

Definition at line 962 of file expr_pylike_eval.c.

References CHECK_ERROR, parse_add(), parse_cmp_chain(), parse_get_cmp_func(), parse_next_token(), and state.

Referenced by parse_not().

parse_cmp_chain()

static bool parse_cmp_chain ( ExprParseState *  state, BinaryOpFunc  cur_func  )

static

Definition at line 942 of file expr_pylike_eval.c.

References ExprOp::arg, CHECK_ERROR, ExprOp::func2, jump(), OPCODE_CMP_CHAIN, OPCODE_FUNC2, parse_add(), parse_add_func(), parse_add_op(), parse_get_cmp_func(), parse_next_token(), parse_set_jump(), and state.

Referenced by parse_cmp().

parse_expr()

static bool parse_expr ( ExprParseState *  state )

static

Definition at line 1018 of file expr_pylike_eval.c.

References CHECK_ERROR, MEM_freeN, MEM_mallocN, OPCODE_JMP, OPCODE_JMP_ELSE, parse_add_jump(), parse_alloc_ops(), parse_next_token(), parse_or(), parse_set_jump(), size(), state, TOKEN_ELSE, and TOKEN_IF.

Referenced by BLI_expr_pylike_parse(), parse_function_args(), and parse_unary().

parse_function_args()

static int parse_function_args ( ExprParseState *  state )

static

Definition at line 761 of file expr_pylike_eval.c.

References parse_expr(), parse_next_token(), and state.

Referenced by parse_unary().

parse_get_cmp_func()

static BinaryOpFunc parse_get_cmp_func ( short  token )

static

Definition at line 922 of file expr_pylike_eval.c.

References NULL, op_eq(), op_ge(), op_gt(), op_le(), op_lt(), op_ne(), TOKEN_EQ, TOKEN_GE, TOKEN_LE, and TOKEN_NE.

Referenced by parse_cmp(), and parse_cmp_chain().

parse_mul()

static bool parse_mul ( ExprParseState *  state )

static

Definition at line 878 of file expr_pylike_eval.c.

References CHECK_ERROR, op_div(), op_mul(), OPCODE_FUNC2, parse_add_func(), parse_next_token(), parse_unary(), and state.

Referenced by parse_add().

parse_next_token()

static bool parse_next_token ( ExprParseState *  state )

static

Definition at line 654 of file expr_pylike_eval.c.

References CHECK_ERROR, ELEM, keyword_list, MAKE_CHAR2, KeywordTokenDef::name, state, STREQ, KeywordTokenDef::token, token_characters, token_eq_characters, TOKEN_ID, and TOKEN_NUMBER.

Referenced by BLI_expr_pylike_parse(), parse_add(), parse_and(), parse_cmp(), parse_cmp_chain(), parse_expr(), parse_function_args(), parse_mul(), parse_not(), parse_or(), and parse_unary().

parse_not()

static bool parse_not ( ExprParseState *  state )

static

Definition at line 977 of file expr_pylike_eval.c.

References CHECK_ERROR, op_not(), OPCODE_FUNC1, parse_add_func(), parse_cmp(), parse_next_token(), state, and TOKEN_NOT.

Referenced by parse_and().

parse_or()

static bool parse_or ( ExprParseState *  state )

static

Definition at line 1003 of file expr_pylike_eval.c.

References CHECK_ERROR, jump(), OPCODE_JMP_OR, parse_add_jump(), parse_and(), parse_next_token(), parse_set_jump(), state, and TOKEN_OR.

Referenced by parse_expr().

parse_set_jump()

static void parse_set_jump ( ExprParseState *  state, int  jump  )

static

Definition at line 555 of file expr_pylike_eval.c.

References jump(), and state.

Referenced by parse_and(), parse_cmp_chain(), parse_expr(), and parse_or().

parse_unary()

static bool parse_unary ( ExprParseState *  state )

static

Definition at line 795 of file expr_pylike_eval.c.

References ExprOp::arg, builtin_consts, builtin_ops, CHECK_ERROR, ExprOp::dval, ExprOp::ival, BuiltinConstDef::name, BuiltinOpDef::name, op_negate(), opcode_arg_count(), OPCODE_CONST, OPCODE_FUNC1, OPCODE_MAX, OPCODE_MIN, OPCODE_PARAMETER, parse_add_func(), parse_add_op(), parse_expr(), parse_function_args(), parse_next_token(), state, STREQ, TOKEN_ID, TOKEN_NUMBER, and BuiltinConstDef::value.

Referenced by parse_mul().

Variable Documentation

builtin_consts

BuiltinConstDef builtin_consts[]

static

Initial value:

= {
    {"pi", M_PI}, {"True", 1.0}, {"False", 0.0}, {NULL, 0.0}}

Definition at line 407 of file expr_pylike_eval.c.

Referenced by parse_unary().

builtin_ops

BuiltinOpDef builtin_ops[]

static

Initial value:

= {
    {"radians", OPCODE_FUNC1, op_radians},
    {"degrees", OPCODE_FUNC1, op_degrees},
    {"abs", OPCODE_FUNC1, fabs},
    {"fabs", OPCODE_FUNC1, fabs},
    {"floor", OPCODE_FUNC1, floor},
    {"ceil", OPCODE_FUNC1, ceil},
    {"trunc", OPCODE_FUNC1, trunc},
    {"round", OPCODE_FUNC1, round},
    {"int", OPCODE_FUNC1, trunc},
    {"sin", OPCODE_FUNC1, sin},
    {"cos", OPCODE_FUNC1, cos},
    {"tan", OPCODE_FUNC1, tan},
    {"asin", OPCODE_FUNC1, asin},
    {"acos", OPCODE_FUNC1, acos},
    {"atan", OPCODE_FUNC1, atan},
    {"atan2", OPCODE_FUNC2, atan2},
    {"exp", OPCODE_FUNC1, exp},
    {"log", OPCODE_FUNC1, log},
    {"log", OPCODE_FUNC2, op_log2},
    {"sqrt", OPCODE_FUNC1, sqrt},
    {"pow", OPCODE_FUNC2, pow},
    {"fmod", OPCODE_FUNC2, fmod},
    {"lerp", OPCODE_FUNC3, op_lerp},
    {"clamp", OPCODE_FUNC1, op_clamp},
    {"clamp", OPCODE_FUNC3, op_clamp3},
    {"smoothstep", OPCODE_FUNC3, op_smoothstep},
    {NULL, OPCODE_CONST, NULL},
}

Definition at line 423 of file expr_pylike_eval.c.

Referenced by parse_unary().

keyword_list

KeywordTokenDef keyword_list[]

static

Initial value:

= {
    {"and", TOKEN_AND},
    {"or", TOKEN_OR},
    {"not", TOKEN_NOT},
    {"if", TOKEN_IF},
    {"else", TOKEN_ELSE},
    {NULL, TOKEN_ID},
}

Definition at line 489 of file expr_pylike_eval.c.

Referenced by denoise_func(), merge_func(), and parse_next_token().

token_characters

const char* token_characters = "~`!@#$%^&*+-=/\\?:;<>(){}[]|.,\"'"

static

Definition at line 482 of file expr_pylike_eval.c.

Referenced by parse_next_token().

token_eq_characters

const char* token_eq_characters = "!=><"

static

Definition at line 481 of file expr_pylike_eval.c.

Referenced by parse_next_token().