expr_pylike_eval.cc File Reference

#include <cctype>
#include <cfenv>
#include <cmath>
#include <cstddef>
#include <cstdlib>
#include <cstring>
#include <variant>
#include "MEM_guardedalloc.h"
#include "BLI_alloca.h"
#include "BLI_expr_pylike_eval.h"
#include "BLI_math_base.h"
#include "BLI_utildefines.h"
#include "BLI_vector.hh"

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 (const ExprPyLike_Parsed *expr)
bool	BLI_expr_pylike_is_constant (const ExprPyLike_Parsed *expr)
bool	BLI_expr_pylike_is_using_param (const 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)
#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')
static const char *	token_eq_characters = "!=><"
static const char *	token_characters = "~`!@#$%^&*+-=/\\?:;<>(){}[]|.,\"'"
static KeywordTokenDef	keyword_list []
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 bool	parse_add_func (ExprParseState *state, std::variant< UnaryOpFunc, BinaryOpFunc, TernaryOpFunc > 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 }
using	UnaryOpFunc = double (*)(double)
using	BinaryOpFunc = double (*)(double, double)
using	TernaryOpFunc = double (*)(double, double, double)

Built-In Operations
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.cc.

Macro Definition Documentation

CHECK_ERROR

#define CHECK_ERROR

(

condition

)

Value:

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

Definition at line 450 of file expr_pylike_eval.cc.

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

FAIL_IF

#define FAIL_IF

(

condition

)

Value:

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

Referenced by BLI_expr_pylike_eval().

MAKE_CHAR2

#define MAKE_CHAR2	(		a,
			b )

Value:

(((a) << 8) | (b))

Definition at line 448 of file expr_pylike_eval.cc.

Referenced by parse_next_token().

TOKEN_AND

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

Definition at line 464 of file expr_pylike_eval.cc.

Referenced by parse_and().

TOKEN_ELSE

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

Definition at line 468 of file expr_pylike_eval.cc.

Referenced by parse_expr().

TOKEN_EQ

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

Definition at line 463 of file expr_pylike_eval.cc.

Referenced by parse_get_cmp_func().

TOKEN_GE

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

Definition at line 460 of file expr_pylike_eval.cc.

Referenced by parse_get_cmp_func().

TOKEN_ID

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

Definition at line 458 of file expr_pylike_eval.cc.

Referenced by parse_next_token(), and parse_unary().

TOKEN_IF

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

Definition at line 467 of file expr_pylike_eval.cc.

Referenced by parse_expr().

TOKEN_LE

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

Definition at line 461 of file expr_pylike_eval.cc.

Referenced by parse_get_cmp_func().

TOKEN_NE

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

Definition at line 462 of file expr_pylike_eval.cc.

Referenced by parse_get_cmp_func().

TOKEN_NOT

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

Definition at line 466 of file expr_pylike_eval.cc.

Referenced by parse_not().

TOKEN_NUMBER

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

Definition at line 459 of file expr_pylike_eval.cc.

Referenced by parse_next_token(), and parse_unary().

TOKEN_OR

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

Definition at line 465 of file expr_pylike_eval.cc.

Referenced by parse_or().

Typedef Documentation

BinaryOpFunc

using BinaryOpFunc = double (*)(double, double)

Definition at line 81 of file expr_pylike_eval.cc.

TernaryOpFunc

using TernaryOpFunc = double (*)(double, double, double)

Definition at line 82 of file expr_pylike_eval.cc.

UnaryOpFunc

using UnaryOpFunc = double (*)(double)

Definition at line 80 of file expr_pylike_eval.cc.

Enumeration Type Documentation

eOpCode

enum eOpCode

Enumerator
OPCODE_CONST	Double constant: (-> dval).
OPCODE_FUNC1	1 argument function call: (a -> func1(a)).
OPCODE_FUNC2	2 argument function call: (a b -> func2(a,b)).
OPCODE_FUNC3	3 argument function call: (a b c -> func3(a,b,c)).
OPCODE_PARAMETER	Parameter access: (-> params[ival]).
OPCODE_MIN	Minimum of multiple inputs: (a b c... -> min); ival = arg count.
OPCODE_MAX	Maximum of multiple inputs: (a b c... -> max); ival = arg count.
OPCODE_JMP	Jump (pc += jmp_offset)
OPCODE_JMP_ELSE	Pop and jump if zero: (a -> ); JUMP IF NOT a.
OPCODE_JMP_OR	Jump if nonzero, or pop: (a -> a JUMP) IF a ELSE (a -> ).
OPCODE_JMP_AND	Jump if zero, or pop: (a -> a JUMP) IF NOT a ELSE (a -> ).
OPCODE_CMP_CHAIN	For comparison chaining: (a b -> 0 JUMP) IF NOT func2(a,b) ELSE (a b -> b).

Definition at line 53 of file expr_pylike_eval.cc.

Function Documentation

BLI_expr_pylike_eval()

eExprPyLike_EvalStatus BLI_expr_pylike_eval	(	struct 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 148 of file expr_pylike_eval.cc.

References ExprOp::arg, BLI_array_alloca, BLI_expr_pylike_is_valid(), CLAMP_MAX, CLAMP_MIN, Vector< T, InlineBufferCapacity, Allocator >::data(), 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 Vector< T, InlineBufferCapacity, Allocator >::size().

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

BLI_expr_pylike_free()

void BLI_expr_pylike_free

(

struct ExprPyLike_Parsed *

expr

)

Free the parsed data; NULL argument is ok.

Definition at line 110 of file expr_pylike_eval.cc.

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

(

const ExprPyLike_Parsed *

expr

)

Definition at line 120 of file expr_pylike_eval.cc.

References OPCODE_CONST, ExprPyLike_Parsed::ops, and Vector< T, InlineBufferCapacity, Allocator >::size().

BLI_expr_pylike_is_using_param()

bool BLI_expr_pylike_is_using_param	(	const ExprPyLike_Parsed *	expr,
		int	index )

Definition at line 125 of file expr_pylike_eval.cc.

References i, OPCODE_PARAMETER, ExprPyLike_Parsed::ops, and Vector< T, InlineBufferCapacity, Allocator >::size().

BLI_expr_pylike_is_valid()

bool BLI_expr_pylike_is_valid

(

const ExprPyLike_Parsed *

expr

)

Definition at line 115 of file expr_pylike_eval.cc.

References ExprPyLike_Parsed::ops, and Vector< T, InlineBufferCapacity, Allocator >::size().

Referenced by BLI_expr_pylike_eval().

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 1038 of file expr_pylike_eval.cc.

References BLI_assert, ExprPyLike_Parsed::max_stack, ExprPyLike_Parsed::ops, 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(), TEST(), and TEST().

op_add()

double op_add ( double a, double b )

static

Definition at line 291 of file expr_pylike_eval.cc.

References b.

Referenced by parse_add().

op_clamp()

double op_clamp ( double arg )

static

Definition at line 321 of file expr_pylike_eval.cc.

References CLAMP.

op_clamp3()

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

static

Definition at line 327 of file expr_pylike_eval.cc.

References CLAMP.

op_degrees()

double op_degrees ( double arg )

static

Definition at line 306 of file expr_pylike_eval.cc.

References M_PI.

op_div()

double op_div ( double a, double b )

static

Definition at line 286 of file expr_pylike_eval.cc.

References b.

Referenced by parse_mul().

op_eq()

double op_eq ( double a, double b )

static

Definition at line 345 of file expr_pylike_eval.cc.

References b.

Referenced by parse_get_cmp_func().

op_ge()

double op_ge ( double a, double b )

static

Definition at line 370 of file expr_pylike_eval.cc.

References b.

Referenced by parse_get_cmp_func().

op_gt()

double op_gt ( double a, double b )

static

Definition at line 365 of file expr_pylike_eval.cc.

References b.

Referenced by parse_get_cmp_func().

op_le()

double op_le ( double a, double b )

static

Definition at line 360 of file expr_pylike_eval.cc.

References b.

Referenced by parse_get_cmp_func().

op_lerp()

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

static

Definition at line 316 of file expr_pylike_eval.cc.

References b, and x.

op_log2()

double op_log2 ( double a, double b )

static

Definition at line 311 of file expr_pylike_eval.cc.

References b, and log.

op_lt()

double op_lt ( double a, double b )

static

Definition at line 355 of file expr_pylike_eval.cc.

References b.

Referenced by parse_get_cmp_func().

op_mul()

double op_mul ( double a, double b )

static

Definition at line 281 of file expr_pylike_eval.cc.

References b.

Referenced by parse_mul().

op_ne()

double op_ne ( double a, double b )

static

Definition at line 350 of file expr_pylike_eval.cc.

References b.

Referenced by parse_get_cmp_func().

op_negate()

double op_negate ( double arg )

static

Definition at line 276 of file expr_pylike_eval.cc.

Referenced by parse_unary().

op_not()

double op_not ( double a )

static

Definition at line 340 of file expr_pylike_eval.cc.

Referenced by parse_not().

op_radians()

double op_radians ( double arg )

static

Definition at line 301 of file expr_pylike_eval.cc.

References M_PI.

op_smoothstep()

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

static

Definition at line 333 of file expr_pylike_eval.cc.

References b, CLAMP, and x.

op_sub()

double op_sub ( double a, double b )

static

Definition at line 296 of file expr_pylike_eval.cc.

References b.

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

parse_add()

bool parse_add ( ExprParseState * state )

static

Definition at line 860 of file expr_pylike_eval.cc.

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

Referenced by parse_cmp(), and parse_cmp_chain().

parse_add_func()

bool parse_add_func ( ExprParseState * state, std::variant< UnaryOpFunc, BinaryOpFunc, TernaryOpFunc > funcptr )

static

Definition at line 538 of file expr_pylike_eval.cc.

References ExprOp::arg, BLI_assert, ExprOp::dval, ExprOp::func1, ExprOp::func2, ExprOp::func3, OPCODE_CONST, OPCODE_FUNC1, OPCODE_FUNC2, OPCODE_FUNC3, parse_add_op(), result, and state.

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

parse_add_jump()

int parse_add_jump ( ExprParseState * state, eOpCode code )

static

Definition at line 524 of file expr_pylike_eval.cc.

References parse_add_op(), and state.

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

parse_add_op()

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

static

Definition at line 510 of file expr_pylike_eval.cc.

References CLAMP_MIN, and state.

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

parse_and()

bool parse_and ( ExprParseState * state )

static

Definition at line 948 of file expr_pylike_eval.cc.

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

Referenced by parse_and(), and parse_or().

parse_cmp()

bool parse_cmp ( ExprParseState * state )

static

Definition at line 922 of file expr_pylike_eval.cc.

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

Referenced by parse_not().

parse_cmp_chain()

bool parse_cmp_chain ( ExprParseState * state, BinaryOpFunc cur_func )

static

Definition at line 902 of file expr_pylike_eval.cc.

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

Referenced by parse_cmp(), and parse_cmp_chain().

parse_expr()

bool parse_expr ( ExprParseState * state )

static

Definition at line 978 of file expr_pylike_eval.cc.

References CHECK_ERROR, blender::Vector< T, InlineBufferCapacity, Allocator >::clear_and_shrink(), blender::Vector< T, InlineBufferCapacity, Allocator >::data(), OPCODE_JMP, OPCODE_JMP_ELSE, parse_add_jump(), parse_expr(), parse_next_token(), parse_or(), parse_set_jump(), size(), state, TOKEN_ELSE, and TOKEN_IF.

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

parse_function_args()

int parse_function_args ( ExprParseState * state )

static

Definition at line 718 of file expr_pylike_eval.cc.

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

Referenced by parse_unary().

parse_get_cmp_func()

BinaryOpFunc parse_get_cmp_func ( short token )

static

Definition at line 882 of file expr_pylike_eval.cc.

References 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()

bool parse_mul ( ExprParseState * state )

static

Definition at line 838 of file expr_pylike_eval.cc.

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

Referenced by parse_add().

parse_next_token()

bool parse_next_token ( ExprParseState * state )

static

Definition at line 611 of file expr_pylike_eval.cc.

References CHECK_ERROR, ELEM, i, keyword_list, MAKE_CHAR2, out, state, STREQ, 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()

bool parse_not ( ExprParseState * state )

static

Definition at line 937 of file expr_pylike_eval.cc.

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

Referenced by parse_and(), and parse_not().

parse_or()

bool parse_or ( ExprParseState * state )

static

Definition at line 963 of file expr_pylike_eval.cc.

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

Referenced by parse_expr(), and parse_or().

parse_set_jump()

void parse_set_jump ( ExprParseState * state, int jump )

static

Definition at line 531 of file expr_pylike_eval.cc.

References jump(), and state.

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

parse_unary()

bool parse_unary ( ExprParseState * state )

static

Definition at line 752 of file expr_pylike_eval.cc.

References ExprOp::arg, builtin_consts, builtin_ops, CHECK_ERROR, count, ExprOp::dval, i, ExprOp::ival, name, op_negate(), OPCODE_CONST, OPCODE_MAX, OPCODE_MIN, OPCODE_PARAMETER, parse_add_func(), parse_add_op(), parse_expr(), parse_function_args(), parse_next_token(), parse_unary(), state, STREQ, TOKEN_ID, and TOKEN_NUMBER.

Referenced by parse_mul(), and parse_unary().

Variable Documentation

builtin_consts

BuiltinConstDef builtin_consts[]

static

Initial value:

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

Definition at line 380 of file expr_pylike_eval.cc.

Referenced by parse_unary().

builtin_ops

BuiltinOpDef builtin_ops[]

static

Initial value:

                                = {
    {"radians", UnaryOpFunc(op_radians)},
    {"degrees", UnaryOpFunc(op_degrees)},
    {"abs", UnaryOpFunc(fabs)},
    {"fabs", UnaryOpFunc(fabs)},
    {"floor", UnaryOpFunc(floor)},
    {"ceil", UnaryOpFunc(ceil)},
    {"trunc", UnaryOpFunc(trunc)},
    {"round", UnaryOpFunc(round)},
    {"int", UnaryOpFunc(trunc)},
    {"sin", UnaryOpFunc(sin)},
    {"cos", UnaryOpFunc(cos)},
    {"tan", UnaryOpFunc(tan)},
    {"asin", UnaryOpFunc(asin)},
    {"acos", UnaryOpFunc(acos)},
    {"atan", UnaryOpFunc(atan)},
    {"atan2", BinaryOpFunc(atan2)},
    {"exp", UnaryOpFunc(exp)},
    {"log", UnaryOpFunc(log)},
    {"log", BinaryOpFunc(op_log2)},
    {"sqrt", UnaryOpFunc(sqrt)},
    {"pow", BinaryOpFunc(pow)},
    {"fmod", BinaryOpFunc(fmod)},
    {"lerp", TernaryOpFunc(op_lerp)},
    {"clamp", UnaryOpFunc(op_clamp)},
    {"clamp", TernaryOpFunc(op_clamp3)},
    {"smoothstep", TernaryOpFunc(op_smoothstep)},
    {nullptr},
}

Definition at line 412 of file expr_pylike_eval.cc.

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},
    {nullptr, TOKEN_ID},
}

Definition at line 478 of file expr_pylike_eval.cc.

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

token_characters

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

static

Definition at line 471 of file expr_pylike_eval.cc.

Referenced by parse_next_token().

token_eq_characters

const char* token_eq_characters = "!=><"

static

Definition at line 470 of file expr_pylike_eval.cc.

Referenced by parse_next_token().