e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
66 lines
2.0 KiB
C
66 lines
2.0 KiB
C
/* SPDX-FileCopyrightText: 2018 Blender Authors, Alexander Gavrilov. All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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/** \file
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* \ingroup bli
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Opaque structure containing pre-parsed data for evaluation. */
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typedef struct ExprPyLike_Parsed ExprPyLike_Parsed;
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/** Expression evaluation return code. */
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typedef enum eExprPyLike_EvalStatus {
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EXPR_PYLIKE_SUCCESS = 0,
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/* Computation errors; result is still set, but may be NaN */
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EXPR_PYLIKE_DIV_BY_ZERO,
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EXPR_PYLIKE_MATH_ERROR,
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/* Expression dependent errors or bugs; result is 0 */
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EXPR_PYLIKE_INVALID,
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EXPR_PYLIKE_FATAL_ERROR,
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} eExprPyLike_EvalStatus;
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/**
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* Free the parsed data; NULL argument is ok.
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*/
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void BLI_expr_pylike_free(struct ExprPyLike_Parsed *expr);
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/**
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* Check if the parsing result is valid for evaluation.
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*/
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bool BLI_expr_pylike_is_valid(struct ExprPyLike_Parsed *expr);
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/**
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* Check if the parsed expression always evaluates to the same value.
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*/
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bool BLI_expr_pylike_is_constant(struct ExprPyLike_Parsed *expr);
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/**
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* Check if the parsed expression uses the parameter with the given index.
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*/
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bool BLI_expr_pylike_is_using_param(struct ExprPyLike_Parsed *expr, int index);
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/**
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* Compile the expression and return the result.
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*
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* Parse the expression for evaluation later.
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* Returns non-NULL even on failure; use is_valid to check.
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*/
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ExprPyLike_Parsed *BLI_expr_pylike_parse(const char *expression,
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const char **param_names,
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int param_names_len);
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/**
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* Evaluate the expression with the given parameters.
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* The order and number of parameters must match the names given to parse.
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*/
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eExprPyLike_EvalStatus BLI_expr_pylike_eval(struct ExprPyLike_Parsed *expr,
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const double *param_values,
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int param_values_len,
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double *r_result);
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#ifdef __cplusplus
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}
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#endif
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