OpenCoverage

let.def

Absolute File Name:

/home/opencoverage/opencoverage/guest-scripts/bash/src/builtins/let.def

Source code

Switch to Preprocessed file

Line Source Count

1 This file is let.def, from which is created let.c. -

2 It implements the builtin "let" in Bash. -

3 -

5 -

6 This file is part of GNU Bash, the Bourne Again SHell. -

7 -

8 Bash is free software: you can redistribute it and/or modify -

9 it under the terms of the GNU General Public License as published by -

10 the Free Software Foundation, either version 3 of the License, or -

11 (at your option) any later version. -

12 -

13 Bash is distributed in the hope that it will be useful, -

14 but WITHOUT ANY WARRANTY; without even the implied warranty of -

15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -

16 GNU General Public License for more details. -

17 -

18 You should have received a copy of the GNU General Public License -

19 along with Bash. If not, see <http://www.gnu.org/licenses/>. -

20 -

21 $BUILTIN let -

22 $FUNCTION let_builtin -

23 $PRODUCES let.c -

24 $SHORT_DOC let arg [arg ...] -

25 Evaluate arithmetic expressions. -

26 -

27 Evaluate each ARG as an arithmetic expression. Evaluation is done in -

28 fixed-width integers with no check for overflow, though division by 0 -

29 is trapped and flagged as an error. The following list of operators is -

30 grouped into levels of equal-precedence operators. The levels are listed -

31 in order of decreasing precedence. -

32 -

33 id++, id-- variable post-increment, post-decrement -

34 ++id, --id variable pre-increment, pre-decrement -

35 -, + unary minus, plus -

36 !, ~ logical and bitwise negation -

37 ** exponentiation -

38 *, /, % multiplication, division, remainder -

39 +, - addition, subtraction -

40 <<, >> left and right bitwise shifts -

41 <=, >=, <, > comparison -

42 ==, != equality, inequality -

43 & bitwise AND -

44 ^ bitwise XOR -

45 | bitwise OR -

46 && logical AND -

47 || logical OR -

48 expr ? expr : expr -

49 conditional operator -

50 =, *=, /=, %=, -

51 +=, -=, <<=, >>=, -

52 &=, ^=, |= assignment -

53 -

54 Shell variables are allowed as operands. The name of the variable -

55 is replaced by its value (coerced to a fixed-width integer) within -

56 an expression. The variable need not have its integer attribute -

57 turned on to be used in an expression. -

58 -

59 Operators are evaluated in order of precedence. Sub-expressions in -

60 parentheses are evaluated first and may override the precedence -

61 rules above. -

62 -

63 Exit Status: -

64 If the last ARG evaluates to 0, let returns 1; let returns 0 otherwise. -

65 $END -

66 -

67 #include <config.h> -

68 -

69 #if defined (HAVE_UNISTD_H) -

70 # ifdef _MINIX -

71 # include <sys/types.h> -

72 # endif -

73 # include <unistd.h> -

74 #endif -

75 -

76 #include "../bashintl.h" -

77 -

78 #include "../shell.h" -

79 #include "common.h" -

80 -

81 /* Arithmetic LET function. */ -

82 int -

83 let_builtin (list) -

84 WORD_LIST *list; -

85 { -

86 intmax_t ret; -

87 int expok; -

88 -

CHECK_HELPOPT (list);

never executed: __result = (((const unsigned char *) (const char *) ( ((list)->word->word) ))[3] - __s2[3]);

never executed: end of block

never executed: __result = (((const unsigned char *) (const char *) ( "--help" ))[3] - __s2[3]);

never executed: end of block

never executed: return (258);

(list)	Description
TRUE	evaluated 664879 times by 1 test Evaluated by: Self test
FALSE	evaluated 5 times by 1 test Evaluated by: Self test

(list)->word	Description
TRUE	evaluated 664879 times by 1 test Evaluated by: Self test
FALSE	never evaluated

(((list)->word... ("--help")[0]	Description
TRUE	never evaluated
FALSE	evaluated 664879 times by 1 test Evaluated by: Self test

__extension__ ... )))); }) == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s1_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 0	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 1	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

__s2_len > 2	Description
TRUE	never evaluated
FALSE	never evaluated

__result == 0	Description
TRUE	never evaluated
FALSE	never evaluated

0-664879

90 -

91 /* Skip over leading `--' argument. */ -

if (list && list->word && ISOPTION (list->word->word, '-'))

list	Description
TRUE	evaluated 664879 times by 1 test Evaluated by: Self test
FALSE	evaluated 5 times by 1 test Evaluated by: Self test

list->word	Description
TRUE	evaluated 664879 times by 1 test Evaluated by: Self test
FALSE	never evaluated

list->word->word[0] == '-'	Description
TRUE	never evaluated
FALSE	evaluated 664879 times by 1 test Evaluated by: Self test

list->word->word[1] == '-'	Description
TRUE	never evaluated
FALSE	never evaluated

!list->word->word[2]	Description
TRUE	never evaluated
FALSE	never evaluated

0-664879

list = list->next;

never executed: list = list->next;

94 -

if (list == 0)

list == 0	Description
TRUE	evaluated 5 times by 1 test Evaluated by: Self test
FALSE	evaluated 664879 times by 1 test Evaluated by: Self test

5-664879

96 { -

97 builtin_error (_("expression expected")); -

return (EXECUTION_FAILURE);

executed 5 times by 1 test: return (1);

Executed by:

Self test

99 } -

100 -

101

for (; list; list = list->next)

list	Description
TRUE	evaluated 664880 times by 1 test Evaluated by: Self test
FALSE	evaluated 664863 times by 1 test Evaluated by: Self test

664863-664880

102 { -

103 ret = evalexp (list->word->word, EXP_EXPANDED, &expok); -

104

if (expok == 0)

expok == 0	Description
TRUE	evaluated 16 times by 1 test Evaluated by: Self test
FALSE	evaluated 664864 times by 1 test Evaluated by: Self test

16-664864

105

return (EXECUTION_FAILURE);

executed 16 times by 1 test: return (1);

Executed by:

Self test

106

}

executed 664864 times by 1 test: end of block

Executed by:

Self test

664864

107 -

108

return ((ret == 0) ? EXECUTION_FAILURE : EXECUTION_SUCCESS);

executed 664863 times by 1 test: return ((ret == 0) ? 1 : 0);

Executed by:

Self test

664863

109 } -

110 -

111 #ifdef INCLUDE_UNUSED -

112 int -

113 exp_builtin (list) -

114 WORD_LIST *list; -

115 { -

116 char *exp; -

117 intmax_t ret; -

118 int expok; -

119 -

120 if (list == 0) -

121 { -

122 builtin_error (_("expression expected")); -

123 return (EXECUTION_FAILURE); -

124 } -

125 -

126 exp = string_list (list); -

127 ret = evalexp (exp, EXP_EXPANDED, &expok); -

128 (void)free (exp); -

129 return (((ret == 0) || (expok == 0)) ? EXECUTION_FAILURE : EXECUTION_SUCCESS); -

130 } -

131 #endif -

Source code

Switch to Preprocessed file

Generated by Squish Coco 4.1.2