Commit | Line | Data |
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57879fc8 | 1 | #ifndef lint |
7edc52ec | 2 | static char sccsid[] = "@(#)parser2.c 3.6 %G%"; |
57879fc8 EW |
3 | #endif |
4 | ||
5 | #include "parser.h" | |
0173496c EW |
6 | #include "var.h" |
7 | #include "lcmd.h" | |
bb4a0c0b | 8 | #include "alias.h" |
57879fc8 EW |
9 | |
10 | /* | |
11 | * name == 0 means we don't have a function name but | |
12 | * want to parse the arguments anyway. flag == 0 in this case. | |
13 | */ | |
14 | p_function(name, v, flag) | |
15 | char *name; | |
16 | register struct value *v; | |
17 | { | |
18 | struct value t; | |
bb4a0c0b EW |
19 | register struct lcmd_tab *c = 0; |
20 | register struct alias *a = 0; | |
57879fc8 EW |
21 | register struct lcmd_arg *ap; |
22 | register i; | |
1f12ea41 | 23 | struct value av[LCMD_NARG + 1]; |
4222244b | 24 | register struct value *vp; |
57879fc8 | 25 | |
bb4a0c0b EW |
26 | if (name != 0) |
27 | if (c = lcmd_lookup(name)) | |
28 | name = c->lc_name; | |
29 | else if (a = alias_lookup(name)) | |
30 | name = a->a_name; | |
31 | else { | |
32 | p_error("%s: No such command or alias.", name); | |
57879fc8 EW |
33 | flag = 0; |
34 | } | |
57879fc8 | 35 | |
bb4a0c0b EW |
36 | for (vp = av; vp < &av[LCMD_NARG + 1]; vp++) |
37 | vp->v_type = V_ERR; | |
57879fc8 EW |
38 | |
39 | for (i = 0;;) { | |
40 | ap = 0; | |
bb4a0c0b | 41 | vp = 0; |
57879fc8 EW |
42 | if (p_expr0(&t, flag) < 0) |
43 | if (!p_synerred() && token == T_MUL) { | |
44 | if (c != 0) | |
45 | if (c->lc_arg[i].arg_name == 0) | |
bb4a0c0b | 46 | p_error("%s: Too many arguments.", name); |
57879fc8 EW |
47 | else |
48 | i++; | |
49 | (void) s_gettok(); | |
50 | continue; | |
51 | } else | |
52 | break; | |
53 | if (t.v_type == V_ERR) | |
54 | flag = 0; | |
55 | if (token != T_ASSIGN) { | |
bb4a0c0b EW |
56 | if (i >= LCMD_NARG || c != 0 && c->lc_arg != 0 |
57 | && (ap = c->lc_arg + i)->arg_name == 0) { | |
58 | p_error("%s: Too many arguments.", name); | |
59 | flag = 0; | |
60 | } else | |
61 | vp = &av[i++]; | |
57879fc8 EW |
62 | } else { |
63 | char *tmp; | |
bb4a0c0b EW |
64 | if (p_convstr(&t) < 0) |
65 | goto abort; | |
66 | tmp = t.v_type == V_STR ? t.v_str : 0; | |
57879fc8 EW |
67 | (void) s_gettok(); |
68 | if (p_expr(&t, flag) < 0) { | |
69 | if (tmp) | |
70 | str_free(tmp); | |
71 | p_synerror(); | |
72 | goto abort; | |
73 | } | |
74 | if (t.v_type == V_ERR) | |
75 | flag = 0; | |
76 | if (tmp) { | |
bb4a0c0b EW |
77 | if (c == 0) { |
78 | /* an aliase */ | |
79 | p_error("%s: Bad alias syntax.", name); | |
57879fc8 | 80 | flag = 0; |
bb4a0c0b EW |
81 | } else { |
82 | for (ap = c->lc_arg, vp = av; | |
83 | ap != 0 && ap->arg_name != 0 && | |
84 | !str_match(tmp, ap->arg_name, | |
85 | ap->arg_minlen); | |
86 | ap++, vp++) | |
87 | ; | |
88 | if (ap == 0 || ap->arg_name == 0) { | |
89 | p_error("%s: Unknown argument \"%s\".", | |
90 | name, tmp); | |
91 | flag = 0; | |
92 | ap = 0; | |
93 | vp = 0; | |
94 | } | |
57879fc8 EW |
95 | } |
96 | str_free(tmp); | |
97 | } | |
98 | } | |
99 | if (ap != 0) { | |
4222244b | 100 | if (vp->v_type != V_ERR) { |
57879fc8 | 101 | p_error("%s: Argument %d (%s) duplicated.", |
bb4a0c0b | 102 | name, ap - c->lc_arg + 1, |
57879fc8 | 103 | ap->arg_name); |
57879fc8 | 104 | flag = 0; |
1f12ea41 | 105 | vp = 0; |
57879fc8 EW |
106 | } else if (t.v_type == V_ERR) { |
107 | /* do nothing */ | |
108 | } else if (ap->arg_type == ARG_NUM && t.v_type != V_NUM | |
109 | || ap->arg_type == ARG_STR && t.v_type != V_STR) { | |
110 | p_error("%s: Argument %d (%s) type mismatch.", | |
bb4a0c0b | 111 | name, ap - c->lc_arg + 1, |
57879fc8 | 112 | ap->arg_name); |
57879fc8 | 113 | flag = 0; |
1f12ea41 EW |
114 | vp = 0; |
115 | } | |
57879fc8 | 116 | } |
1f12ea41 EW |
117 | if (vp != 0) |
118 | *vp = t; | |
119 | else | |
120 | val_free(t); | |
57879fc8 EW |
121 | if (token == T_COMMA) |
122 | (void) s_gettok(); | |
123 | } | |
124 | ||
125 | if (p_erred()) | |
126 | flag = 0; | |
127 | if (token != T_RP && token != T_EOL && token != T_EOF) | |
1f12ea41 | 128 | flag = 0; /* look for legal follow set */ |
57879fc8 EW |
129 | v->v_type = V_ERR; |
130 | if (flag) | |
bb4a0c0b EW |
131 | if (c != 0) |
132 | (*c->lc_func)(v, av); | |
133 | else | |
134 | if (dolongcmd(a->a_buf, av, i) < 0) | |
135 | p_memerror(); | |
136 | if (p_abort()) { | |
137 | val_free(*v); | |
138 | v->v_type = V_ERR; | |
139 | goto abort; | |
140 | } | |
141 | for (vp = av; vp < &av[LCMD_NARG]; vp++) | |
142 | val_free(*vp); | |
57879fc8 EW |
143 | return 0; |
144 | abort: | |
bb4a0c0b EW |
145 | for (vp = av; vp < &av[LCMD_NARG]; vp++) |
146 | val_free(*vp); | |
57879fc8 EW |
147 | return -1; |
148 | } | |
149 | ||
150 | p_assign(name, v, flag) | |
151 | char *name; | |
152 | struct value *v; | |
153 | char flag; | |
154 | { | |
155 | (void) s_gettok(); | |
156 | ||
157 | if (p_expr(v, flag) < 0) { | |
158 | p_synerror(); | |
159 | return -1; | |
160 | } | |
161 | switch (v->v_type) { | |
162 | case V_STR: | |
163 | case V_NUM: | |
164 | if (flag && var_set(name, v) == 0) { | |
165 | p_memerror(); | |
166 | val_free(*v); | |
167 | return -1; | |
168 | } | |
169 | break; | |
170 | } | |
171 | return 0; | |
172 | } |