1/* Copyright JS Foundation and other contributors, http://js.foundation
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#ifndef JS_PARSER_LIMITS_H
17#define JS_PARSER_LIMITS_H
18
19/** \addtogroup parser Parser
20 * @{
21 *
22 * \addtogroup jsparser JavaScript
23 * @{
24 *
25 * \addtogroup jsparser_internals Internals
26 * @{
27 */
28
29/**
30 * Maximum identifier length accepted by the parser.
31 * Limit: LEXER_MAX_STRING_LENGTH.
32 */
33#ifndef PARSER_MAXIMUM_IDENT_LENGTH
34#define PARSER_MAXIMUM_IDENT_LENGTH 255
35#endif /* !PARSER_MAXIMUM_IDENT_LENGTH */
36
37/**
38 * Maximum string limit.
39 * Limit: 2147483647 / 65535.
40 */
41#if ENABLED (JERRY_CPOINTER_32_BIT)
42#define PARSER_MAXIMUM_STRING_LIMIT 2147483647
43#else /* !ENABLED (JERRY_CPOINTER_32_BIT) */
44#define PARSER_MAXIMUM_STRING_LIMIT 65535
45#endif /* ENABLED (JERRY_CPOINTER_32_BIT) */
46
47/**
48 * Maximum string length.
49 * Limit: PARSER_MAXIMUM_STRING_LIMIT.
50 */
51#ifndef PARSER_MAXIMUM_STRING_LENGTH
52#define PARSER_MAXIMUM_STRING_LENGTH PARSER_MAXIMUM_STRING_LIMIT
53#endif /* !PARSER_MAXIMUM_STRING_LENGTH */
54
55/**
56 * Maximum number of registers.
57 * Limit: min: 256, max: min(PARSER_MAXIMUM_NUMBER_OF_LITERALS / 2, 16383)
58 */
59#ifndef PARSER_MAXIMUM_NUMBER_OF_REGISTERS
60#define PARSER_MAXIMUM_NUMBER_OF_REGISTERS 256
61#endif /* !PARSER_MAXIMUM_NUMBER_OF_REGISTERS */
62
63/**
64 * Maximum number of literals.
65 * Limit: 32767 - PARSER_MAXIMUM_NUMBER_OF_REGISTERS. Recommended: 32767 - PARSER_MAXIMUM_NUMBER_OF_REGISTERS.
66 */
67#ifndef PARSER_MAXIMUM_NUMBER_OF_LITERALS
68#define PARSER_MAXIMUM_NUMBER_OF_LITERALS (32767 - PARSER_MAXIMUM_NUMBER_OF_REGISTERS)
69#endif /* !PARSER_MAXIMUM_NUMBER_OF_LITERALS */
70
71/**
72 * Maximum depth of scope stack.
73 * Limit: 32767. Recommended: 32767
74 */
75#ifndef PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK
76#define PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK 32767
77#endif /* !PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK */
78
79/**
80 * Maximum code size.
81 * Limit: 16777215. Recommended: 65535, 16777215.
82 */
83#ifndef PARSER_MAXIMUM_CODE_SIZE
84#define PARSER_MAXIMUM_CODE_SIZE (65535 << (JMEM_ALIGNMENT_LOG))
85#endif /* !PARSER_MAXIMUM_CODE_SIZE */
86
87/**
88 * Maximum number of values pushed onto the stack by a function.
89 * Limit: 65500. Recommended: 1024.
90 */
91#ifndef PARSER_MAXIMUM_STACK_LIMIT
92#define PARSER_MAXIMUM_STACK_LIMIT 1024
93
94#endif /* !PARSER_MAXIMUM_STACK_LIMIT */
95
96/* Checks. */
97
98#if (PARSER_MAXIMUM_STRING_LENGTH < 1) || (PARSER_MAXIMUM_STRING_LENGTH > PARSER_MAXIMUM_STRING_LIMIT)
99#error "Maximum string length is not within range."
100#endif /* (PARSER_MAXIMUM_STRING_LENGTH < 1) || (PARSER_MAXIMUM_STRING_LENGTH > PARSER_MAXIMUM_STRING_LIMIT) */
101
102#if (PARSER_MAXIMUM_IDENT_LENGTH < 1) || (PARSER_MAXIMUM_IDENT_LENGTH > PARSER_MAXIMUM_STRING_LENGTH)
103#error "Maximum identifier length is not within range."
104#endif /* (PARSER_MAXIMUM_IDENT_LENGTH < 1) || (PARSER_MAXIMUM_IDENT_LENGTH > PARSER_MAXIMUM_STRING_LENGTH) */
105
106#if ((PARSER_MAXIMUM_NUMBER_OF_LITERALS < 1) \
107     || (PARSER_MAXIMUM_NUMBER_OF_LITERALS + PARSER_MAXIMUM_NUMBER_OF_REGISTERS > 32767))
108#error "Maximum number of literals is not within range."
109#endif /* ((PARSER_MAXIMUM_NUMBER_OF_LITERALS < 1) \
110           || (PARSER_MAXIMUM_NUMBER_OF_LITERALS > 32767)) */
111
112#if (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK < 1) || (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK > 32767)
113#error "Maximum depth of scope stack is not within range."
114#endif /* (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK < 1) || (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK > 32767) */
115
116#if ((PARSER_MAXIMUM_NUMBER_OF_REGISTERS * 2) > PARSER_MAXIMUM_NUMBER_OF_LITERALS)
117#error "Maximum number of registers is not within range."
118#endif /* ((PARSER_MAXIMUM_NUMBER_OF_REGISTERS * 2) > PARSER_MAXIMUM_NUMBER_OF_LITERALS) */
119
120#if (PARSER_MAXIMUM_CODE_SIZE < 4096) || (PARSER_MAXIMUM_CODE_SIZE > 16777215)
121#error "Maximum code size is not within range."
122#endif /* (PARSER_MAXIMUM_CODE_SIZE < 4096) || (PARSER_MAXIMUM_CODE_SIZE > 16777215) */
123
124#if (PARSER_MAXIMUM_STACK_LIMIT < 16) || (PARSER_MAXIMUM_STACK_LIMIT > 65500)
125#error "Maximum function stack usage is not within range."
126#endif /* (PARSER_MAXIMUM_STACK_LIMIT < 16) || (PARSER_MAXIMUM_STACK_LIMIT > 65500) */
127
128/**
129 * @}
130 * @}
131 * @}
132 */
133
134#endif /* !JS_PARSER_LIMITS_H */
135