Commit | Line | Data |
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57879fc8 | 1 | #ifndef lint |
855d0f8f | 2 | static char sccsid[] = "@(#)parser2.c 3.8 %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; | |
855d0f8f EW |
21 | register struct lcmd_arg *ap; /* this arg */ |
22 | struct lcmd_arg *lp = 0; /* list arg */ | |
57879fc8 | 23 | register i; |
1f12ea41 | 24 | struct value av[LCMD_NARG + 1]; |
4222244b | 25 | register struct value *vp; |
57879fc8 | 26 | |
bb4a0c0b EW |
27 | if (name != 0) |
28 | if (c = lcmd_lookup(name)) | |
29 | name = c->lc_name; | |
30 | else if (a = alias_lookup(name)) | |
31 | name = a->a_name; | |
32 | else { | |
33 | p_error("%s: No such command or alias.", name); | |
57879fc8 EW |
34 | flag = 0; |
35 | } | |
57879fc8 | 36 | |
bb4a0c0b EW |
37 | for (vp = av; vp < &av[LCMD_NARG + 1]; vp++) |
38 | vp->v_type = V_ERR; | |
57879fc8 | 39 | |
855d0f8f | 40 | for (i = 0; p_expr0(&t, flag) >= 0;) { |
57879fc8 EW |
41 | if (t.v_type == V_ERR) |
42 | flag = 0; | |
855d0f8f EW |
43 | ap = 0; |
44 | vp = 0; | |
57879fc8 | 45 | if (token != T_ASSIGN) { |
855d0f8f EW |
46 | if (i >= LCMD_NARG || |
47 | c != 0 && (ap = lp) == 0 && | |
48 | (ap = c->lc_arg + i)->arg_name == 0) { | |
bb4a0c0b EW |
49 | p_error("%s: Too many arguments.", name); |
50 | flag = 0; | |
51 | } else | |
52 | vp = &av[i++]; | |
57879fc8 EW |
53 | } else { |
54 | char *tmp; | |
bb4a0c0b EW |
55 | if (p_convstr(&t) < 0) |
56 | goto abort; | |
57 | tmp = t.v_type == V_STR ? t.v_str : 0; | |
57879fc8 EW |
58 | (void) s_gettok(); |
59 | if (p_expr(&t, flag) < 0) { | |
60 | if (tmp) | |
61 | str_free(tmp); | |
62 | p_synerror(); | |
63 | goto abort; | |
64 | } | |
65 | if (t.v_type == V_ERR) | |
66 | flag = 0; | |
67 | if (tmp) { | |
bb4a0c0b EW |
68 | if (c == 0) { |
69 | /* an aliase */ | |
70 | p_error("%s: Bad alias syntax.", name); | |
57879fc8 | 71 | flag = 0; |
bb4a0c0b EW |
72 | } else { |
73 | for (ap = c->lc_arg, vp = av; | |
74 | ap != 0 && ap->arg_name != 0 && | |
855d0f8f EW |
75 | (*ap->arg_name == '\0' || |
76 | !str_match(tmp, ap->arg_name, | |
77 | ap->arg_minlen)); | |
bb4a0c0b EW |
78 | ap++, vp++) |
79 | ; | |
80 | if (ap == 0 || ap->arg_name == 0) { | |
81 | p_error("%s: Unknown argument \"%s\".", | |
82 | name, tmp); | |
83 | flag = 0; | |
84 | ap = 0; | |
85 | vp = 0; | |
86 | } | |
57879fc8 EW |
87 | } |
88 | str_free(tmp); | |
89 | } | |
90 | } | |
91 | if (ap != 0) { | |
855d0f8f EW |
92 | if (ap->arg_flags & ARG_LIST) { |
93 | i = vp - av + 1; | |
94 | lp = ap; | |
95 | } | |
4222244b | 96 | if (vp->v_type != V_ERR) { |
855d0f8f EW |
97 | if (*ap->arg_name) |
98 | p_error("%s: Argument %d (%s) duplicated.", | |
99 | name, vp - av + 1, | |
100 | ap->arg_name); | |
101 | else | |
102 | p_error("%s: Argument %d duplicated.", | |
103 | name, vp - av + 1); | |
57879fc8 | 104 | flag = 0; |
1f12ea41 | 105 | vp = 0; |
57879fc8 EW |
106 | } else if (t.v_type == V_ERR) { |
107 | /* do nothing */ | |
855d0f8f EW |
108 | } else if ((ap->arg_flags&ARG_TYPE) == ARG_NUM && |
109 | t.v_type != V_NUM || | |
110 | (ap->arg_flags&ARG_TYPE) == ARG_STR && | |
111 | t.v_type != V_STR) { | |
112 | if (*ap->arg_name) | |
113 | p_error("%s: Argument %d (%s) type mismatch.", | |
114 | name, vp - av + 1, | |
115 | ap->arg_name); | |
116 | else | |
117 | p_error("%s: Argument %d type mismatch.", | |
118 | name, vp - av + 1); | |
57879fc8 | 119 | flag = 0; |
1f12ea41 EW |
120 | vp = 0; |
121 | } | |
57879fc8 | 122 | } |
1f12ea41 EW |
123 | if (vp != 0) |
124 | *vp = t; | |
125 | else | |
126 | val_free(t); | |
57879fc8 EW |
127 | if (token == T_COMMA) |
128 | (void) s_gettok(); | |
129 | } | |
130 | ||
131 | if (p_erred()) | |
132 | flag = 0; | |
133 | if (token != T_RP && token != T_EOL && token != T_EOF) | |
1f12ea41 | 134 | flag = 0; /* look for legal follow set */ |
57879fc8 EW |
135 | v->v_type = V_ERR; |
136 | if (flag) | |
bb4a0c0b EW |
137 | if (c != 0) |
138 | (*c->lc_func)(v, av); | |
139 | else | |
7293cf8d EW |
140 | if (a->a_flags & A_INUSE) |
141 | p_error("%s: Recursive alias.", a->a_name); | |
142 | else { | |
143 | a->a_flags |= A_INUSE; | |
144 | if (dolongcmd(a->a_buf, av, i) < 0) | |
145 | p_memerror(); | |
146 | a->a_flags &= ~A_INUSE; | |
147 | } | |
bb4a0c0b EW |
148 | if (p_abort()) { |
149 | val_free(*v); | |
150 | v->v_type = V_ERR; | |
151 | goto abort; | |
152 | } | |
153 | for (vp = av; vp < &av[LCMD_NARG]; vp++) | |
154 | val_free(*vp); | |
57879fc8 EW |
155 | return 0; |
156 | abort: | |
bb4a0c0b EW |
157 | for (vp = av; vp < &av[LCMD_NARG]; vp++) |
158 | val_free(*vp); | |
57879fc8 EW |
159 | return -1; |
160 | } | |
161 | ||
162 | p_assign(name, v, flag) | |
163 | char *name; | |
164 | struct value *v; | |
165 | char flag; | |
166 | { | |
167 | (void) s_gettok(); | |
168 | ||
169 | if (p_expr(v, flag) < 0) { | |
170 | p_synerror(); | |
171 | return -1; | |
172 | } | |
173 | switch (v->v_type) { | |
174 | case V_STR: | |
175 | case V_NUM: | |
176 | if (flag && var_set(name, v) == 0) { | |
177 | p_memerror(); | |
178 | val_free(*v); | |
179 | return -1; | |
180 | } | |
181 | break; | |
182 | } | |
183 | return 0; | |
184 | } |