mirror of
https://github.com/jerryscript-project/jerryscript.git
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7df87b7778
The pre-scanner now is able to track all variable declarations and produces a compressed stream which store this data for each function and catch block. When a function or catch block is parsed, this information is decoded and the appropriate variables are created. Furthermore a stack scope is created which contains the currently available local variables and their register or literal index. JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
135 lines
4.5 KiB
C
135 lines
4.5 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 JS_PARSER_LIMITS_H
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#define JS_PARSER_LIMITS_H
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/** \addtogroup parser Parser
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* @{
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*
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* \addtogroup jsparser JavaScript
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* @{
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*
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* \addtogroup jsparser_internals Internals
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* @{
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*/
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/**
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* Maximum identifier length accepted by the parser.
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* Limit: LEXER_MAX_STRING_LENGTH.
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*/
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#ifndef PARSER_MAXIMUM_IDENT_LENGTH
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#define PARSER_MAXIMUM_IDENT_LENGTH 255
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#endif /* !PARSER_MAXIMUM_IDENT_LENGTH */
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/**
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* Maximum string limit.
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* Limit: 2147483647 / 65535.
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*/
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#if ENABLED (JERRY_CPOINTER_32_BIT)
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#define PARSER_MAXIMUM_STRING_LIMIT 2147483647
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#else /* !ENABLED (JERRY_CPOINTER_32_BIT) */
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#define PARSER_MAXIMUM_STRING_LIMIT 65535
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#endif /* ENABLED (JERRY_CPOINTER_32_BIT) */
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/**
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* Maximum string length.
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* Limit: PARSER_MAXIMUM_STRING_LIMIT.
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*/
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#ifndef PARSER_MAXIMUM_STRING_LENGTH
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#define PARSER_MAXIMUM_STRING_LENGTH PARSER_MAXIMUM_STRING_LIMIT
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#endif /* !PARSER_MAXIMUM_STRING_LENGTH */
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/**
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* Maximum number of registers.
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* Limit: min: 256, max: PARSER_MAXIMUM_NUMBER_OF_LITERALS / 2
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*/
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#ifndef PARSER_MAXIMUM_NUMBER_OF_REGISTERS
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#define PARSER_MAXIMUM_NUMBER_OF_REGISTERS 256
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#endif /* !PARSER_MAXIMUM_NUMBER_OF_REGISTERS */
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/**
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* Maximum number of literals.
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* Limit: 32767 - PARSER_MAXIMUM_NUMBER_OF_REGISTERS. Recommended: 32767 - PARSER_MAXIMUM_NUMBER_OF_REGISTERS.
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*/
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#ifndef PARSER_MAXIMUM_NUMBER_OF_LITERALS
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#define PARSER_MAXIMUM_NUMBER_OF_LITERALS (32767 - PARSER_MAXIMUM_NUMBER_OF_REGISTERS)
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#endif /* !PARSER_MAXIMUM_NUMBER_OF_LITERALS */
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/**
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* Maximum depth of scope stack.
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* Limit: 32767. Recommended: 32767
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*/
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#ifndef PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK
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#define PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK 32767
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#endif /* !PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK */
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/**
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* Maximum code size.
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* Limit: 16777215. Recommended: 65535, 16777215.
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*/
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#ifndef PARSER_MAXIMUM_CODE_SIZE
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#define PARSER_MAXIMUM_CODE_SIZE (65535 << (JMEM_ALIGNMENT_LOG))
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#endif /* !PARSER_MAXIMUM_CODE_SIZE */
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/**
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* Maximum number of values pushed onto the stack by a function.
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* Limit: 65500. Recommended: 1024.
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*/
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#ifndef PARSER_MAXIMUM_STACK_LIMIT
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#define PARSER_MAXIMUM_STACK_LIMIT 1024
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#endif /* !PARSER_MAXIMUM_STACK_LIMIT */
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/* Checks. */
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#if (PARSER_MAXIMUM_STRING_LENGTH < 1) || (PARSER_MAXIMUM_STRING_LENGTH > PARSER_MAXIMUM_STRING_LIMIT)
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#error "Maximum string length is not within range."
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#endif /* (PARSER_MAXIMUM_STRING_LENGTH < 1) || (PARSER_MAXIMUM_STRING_LENGTH > PARSER_MAXIMUM_STRING_LIMIT) */
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#if (PARSER_MAXIMUM_IDENT_LENGTH < 1) || (PARSER_MAXIMUM_IDENT_LENGTH > PARSER_MAXIMUM_STRING_LENGTH)
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#error "Maximum identifier length is not within range."
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#endif /* (PARSER_MAXIMUM_IDENT_LENGTH < 1) || (PARSER_MAXIMUM_IDENT_LENGTH > PARSER_MAXIMUM_STRING_LENGTH) */
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#if ((PARSER_MAXIMUM_NUMBER_OF_LITERALS < 1) \
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|| (PARSER_MAXIMUM_NUMBER_OF_LITERALS + PARSER_MAXIMUM_NUMBER_OF_REGISTERS > 32767))
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#error "Maximum number of literals is not within range."
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#endif /* ((PARSER_MAXIMUM_NUMBER_OF_LITERALS < 1) \
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|| (PARSER_MAXIMUM_NUMBER_OF_LITERALS > 32767)) */
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#if (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK < 1) || (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK > 32767)
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#error "Maximum depth of scope stack is not within range."
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#endif /* (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK < 1) || (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK > 32767) */
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#if ((PARSER_MAXIMUM_NUMBER_OF_REGISTERS * 2) > PARSER_MAXIMUM_NUMBER_OF_LITERALS)
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#error "Maximum number of registers is not within range."
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#endif /* ((PARSER_MAXIMUM_NUMBER_OF_REGISTERS * 2) > PARSER_MAXIMUM_NUMBER_OF_LITERALS) */
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#if (PARSER_MAXIMUM_CODE_SIZE < 4096) || (PARSER_MAXIMUM_CODE_SIZE > 16777215)
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#error "Maximum code size is not within range."
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#endif /* (PARSER_MAXIMUM_CODE_SIZE < 4096) || (PARSER_MAXIMUM_CODE_SIZE > 16777215) */
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#if (PARSER_MAXIMUM_STACK_LIMIT < 16) || (PARSER_MAXIMUM_STACK_LIMIT > 65500)
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#error "Maximum function stack usage is not within range."
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#endif /* (PARSER_MAXIMUM_STACK_LIMIT < 16) || (PARSER_MAXIMUM_STACK_LIMIT > 65500) */
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/**
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* @}
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* @}
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* @}
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*/
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#endif /* !JS_PARSER_LIMITS_H */
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