mirror of
https://github.com/jerryscript-project/jerryscript.git
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0511091e8a
Since the project is now hosted at the JS Foundation we can move to unified copyright notices for the project. Starting with this commit all future contributions to the project should only carry the following copyright notice (except for third-party code which requires copyright information to be preserved): "Copyright JS Foundation and other contributors, http://js.foundation" (without the quotes) This avoids cluttering the codebase with contributor-specific copyright notices which have a higher maintenance overhead and tend to get outdated quickly. Also dropping the year from the copyright notices helps to avoid yearly code changes just to update the copyright notices. Note that each contributor still retains full copyright ownership of his/her contributions and the respective authorship is tracked very accurately via Git. JerryScript-DCO-1.0-Signed-off-by: Tilmann Scheller t.scheller@samsung.com
102 lines
3.5 KiB
C
102 lines
3.5 KiB
C
/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ECMA_TRY_CATCH_MACRO_H
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#define ECMA_TRY_CATCH_MACRO_H
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#include "ecma-helpers.h"
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/**
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* The macro defines try-block that initializes variable 'var' with 'op'
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* and checks for exceptions that might be thrown during initialization.
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*
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* If no exception was thrown, then code after the try-block is executed.
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* Otherwise, throw-completion value is just copied to return_value.
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*
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* Note:
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* Each ECMA_TRY_CATCH should have it's own corresponding ECMA_FINALIZE
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* statement with same argument as corresponding ECMA_TRY_CATCH's first argument.
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*/
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#define ECMA_TRY_CATCH(var, op, return_value) \
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JERRY_ASSERT (return_value == ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY)); \
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ecma_value_t var ## _completion = op; \
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if (ECMA_IS_VALUE_ERROR (var ## _completion)) \
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{ \
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return_value = var ## _completion; \
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} \
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else \
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{ \
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ecma_value_t var = var ## _completion; \
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JERRY_UNUSED (var);
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/**
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* The macro marks end of code block that is defined by corresponding
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* ECMA_TRY_CATCH and frees variable, initialized by the ECMA_TRY_CATCH.
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*
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* Note:
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* Each ECMA_TRY_CATCH should be followed by ECMA_FINALIZE with same argument
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* as corresponding ECMA_TRY_CATCH's first argument.
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*/
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#define ECMA_FINALIZE(var) \
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ecma_free_value (var ## _completion); \
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}
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/**
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* The macro defines try-block that tries to perform ToNumber operation on given value
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* and checks for exceptions that might be thrown during the operation.
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*
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* If no exception was thrown, then code after the try-block is executed.
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* Otherwise, throw-completion value is just copied to return_value.
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*
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* Note:
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* Each ECMA_OP_TO_NUMBER_TRY_CATCH should have it's own corresponding ECMA_OP_TO_NUMBER_FINALIZE
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* statement with same argument as corresponding ECMA_OP_TO_NUMBER_TRY_CATCH's first argument.
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*/
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#define ECMA_OP_TO_NUMBER_TRY_CATCH(num_var, value, return_value) \
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JERRY_ASSERT (return_value == ecma_make_simple_value (ECMA_SIMPLE_VALUE_EMPTY)); \
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ecma_number_t num_var = ecma_number_make_nan (); \
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if (ecma_is_value_number (value)) \
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{ \
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num_var = ecma_get_number_from_value (value); \
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} \
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else \
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{ \
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ECMA_TRY_CATCH (to_number_value, \
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ecma_op_to_number (value), \
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return_value); \
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\
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num_var = ecma_get_number_from_value (to_number_value); \
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\
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ECMA_FINALIZE (to_number_value); \
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} \
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\
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if (ecma_is_value_empty (return_value)) \
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{
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/**
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* The macro marks end of code block that is defined by corresponding ECMA_OP_TO_NUMBER_TRY_CATCH.
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*
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* Note:
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* Each ECMA_OP_TO_NUMBER_TRY_CATCH should be followed by ECMA_OP_TO_NUMBER_FINALIZE
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* with same argument as corresponding ECMA_OP_TO_NUMBER_TRY_CATCH's first argument.
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*/
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#define ECMA_OP_TO_NUMBER_FINALIZE(num_var) } \
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else \
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{ \
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JERRY_ASSERT (ecma_number_is_nan (num_var)); \
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}
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#endif /* !ECMA_TRY_CATCH_MACRO_H */
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