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970ed795 | 1 | /****************************************************************************** |
d44e3c4f | 2 | * Copyright (c) 2000-2016 Ericsson Telecom AB |
970ed795 EL |
3 | * All rights reserved. This program and the accompanying materials |
4 | * are made available under the terms of the Eclipse Public License v1.0 | |
5 | * which accompanies this distribution, and is available at | |
6 | * http://www.eclipse.org/legal/epl-v10.html | |
d44e3c4f | 7 | * |
8 | * Contributors: | |
9 | * Balasko, Jeno | |
10 | * Delic, Adam | |
11 | * Forstner, Matyas | |
12 | * Kremer, Peter | |
13 | * Raduly, Csaba | |
14 | * Szabo, Janos Zoltan – initial implementation | |
15 | * | |
970ed795 EL |
16 | ******************************************************************************/ |
17 | %option noyywrap | |
18 | %option never-interactive | |
19 | %option nounput | |
20 | ||
21 | %{ | |
22 | ||
23 | #include <stdio.h> | |
24 | #include <string.h> | |
25 | #include <unistd.h> | |
26 | #include <errno.h> | |
27 | ||
28 | #include "ttcn3_preparser.h" | |
29 | #include "../../common/memory.h" | |
30 | #include "../error.h" | |
31 | ||
32 | /** This inefficient macro is needed to cope with binary files. | |
33 | * The scanner must stop immediately when it encounters a zero byte, | |
34 | * which might cause confusion in the internal algorithm of flex. */ | |
35 | #define YY_INPUT(buf,result,max_size) \ | |
36 | {\ | |
37 | int c = getc(yyin); \ | |
38 | if (c == EOF || c == '\0') result = YY_NULL; \ | |
39 | else { \ | |
40 | buf[0] = c; \ | |
41 | result = 1; \ | |
42 | } \ | |
43 | } | |
44 | ||
45 | #define YY_DECL static int yylex(char **module_name) | |
46 | ||
47 | %} | |
48 | ||
49 | TTCN3MODULENAME [A-Za-z][A-Za-z0-9_]* | |
50 | NEWLINE \r|\n|\r\n | |
51 | WHITESPACE [ \t\v\f] | |
52 | LINECOMMENT "//"[^\r\n]*{NEWLINE} | |
53 | ||
54 | %x SC_blockcomment SC_ppdirective | |
55 | %s SC_ttcn3module SC_ttcn3modulebody | |
56 | ||
57 | %% | |
58 | int blockcomment_caller = INITIAL, ppdirective_caller = INITIAL; | |
59 | BEGIN(INITIAL); | |
60 | ||
61 | <INITIAL,SC_ppdirective,SC_ttcn3module,SC_ttcn3modulebody>"/*" { | |
62 | blockcomment_caller = YY_START; | |
63 | BEGIN(SC_blockcomment); | |
64 | } | |
65 | ||
66 | ^{WHITESPACE}*"#" { | |
67 | ppdirective_caller = YY_START; | |
68 | BEGIN(SC_ppdirective); | |
69 | } | |
70 | ||
71 | {WHITESPACE}|{NEWLINE}|{LINECOMMENT} | |
72 | ||
73 | <SC_blockcomment> | |
74 | { | |
75 | "*/" BEGIN(blockcomment_caller); | |
76 | .|\n | |
77 | } | |
78 | ||
79 | <SC_ppdirective> | |
80 | { | |
81 | {NEWLINE} BEGIN(ppdirective_caller); | |
82 | .|\\{NEWLINE} | |
83 | } | |
84 | ||
85 | <INITIAL>"module" BEGIN(SC_ttcn3module); | |
86 | ||
87 | <SC_ttcn3module>{TTCN3MODULENAME} { | |
88 | if (module_name != NULL) *module_name = mcopystr(yytext); | |
89 | BEGIN(SC_ttcn3modulebody); | |
90 | } | |
91 | ||
92 | <SC_ttcn3modulebody>"{"|"."|"language" return 1; | |
93 | ||
94 | . | | |
95 | <*><<EOF>> return 0; | |
96 | ||
97 | %% | |
98 | ||
99 | int is_ttcn3_module(const char *file_name, FILE *fp, char **module_name) | |
100 | { | |
101 | int ret_val; | |
102 | if (module_name != NULL) *module_name = NULL; | |
103 | if (fseek(fp, 0L, SEEK_SET)) { | |
104 | ERROR("Seeking to the beginning of file `%s' failed: %s", file_name, | |
105 | strerror(errno)); | |
106 | errno = 0; | |
107 | return 0; | |
108 | } | |
109 | yyin = fp; | |
110 | ret_val = yylex(module_name); | |
111 | yy_flush_buffer(YY_CURRENT_BUFFER); | |
112 | if (ret_val == 0 && module_name != NULL && *module_name != NULL) { | |
113 | Free(*module_name); | |
114 | *module_name = NULL; | |
115 | } | |
116 | yylex_destroy(); | |
117 | return ret_val; | |
118 | } |