1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
// This file defines how to compile CLI argument parsing
#include "../stdlib/cli.h"
#include "../environment.h"
#include "../stdlib/datatypes.h"
#include "../stdlib/optionals.h"
#include "../stdlib/text.h"
#include "../stdlib/util.h"
#include "../typecheck.h"
#include "../types.h"
#include "compilation.h"
static Text_t get_flag_options(type_t *t, Text_t separator) {
if (t->tag == BoolType) {
return Text("yes|no");
} else if (t == PATH_TYPE) {
return Text("path");
} else if (t->tag == EnumType) {
Text_t options = EMPTY_TEXT;
for (tag_t *tag = Match(t, EnumType)->tags; tag; tag = tag->next) {
if (Match(tag->type, StructType)->fields)
options = Texts(options, tag->name, " ", get_flag_options(tag->type, separator));
else options = Texts(options, tag->name);
if (tag->next) options = Texts(options, separator);
}
return options;
} else if (t->tag == StructType) {
Text_t options = EMPTY_TEXT;
for (arg_t *field = Match(t, StructType)->fields; field; field = field->next) {
options = Texts(options, get_flag_options(field->type, separator));
if (field->next) options = Texts(options, " ");
}
return options;
} else if (is_numeric_type(t)) {
return Text("N");
} else if (t->tag == TextType || t->tag == CStringType) {
return Text("text");
} else if (t->tag == ListType) {
Text_t item_option = get_flag_options(Match(t, ListType)->item_type, separator);
return Texts(item_option, "1 ", item_option, "2...");
} else if (t->tag == TableType && Match(t, TableType)->value_type == EMPTY_TYPE) {
Text_t item_option = get_flag_options(Match(t, TableType)->key_type, separator);
return Texts(item_option, "1 ", item_option, "2...");
} else if (t->tag == TableType) {
Text_t key_option = get_flag_options(Match(t, TableType)->key_type, separator);
Text_t value_option = get_flag_options(Match(t, TableType)->value_type, separator);
return Texts(key_option, "1:", value_option, "1 ", key_option, "2:", value_option, "2...");
} else {
return Text("value");
}
}
static OptionalText_t flagify(const char *name, bool prefix) {
if (!name) return NONE_TEXT;
Text_t flag = Text$from_str(name);
flag = Text$replace(flag, Text("_"), Text("-"));
if (prefix) flag = flag.length == 1 ? Texts("-", flag) : Texts("--", flag);
return flag;
}
static Text_t generate_usage(env_t *env, type_t *fn_type) {
DeclareMatch(fn_info, fn_type, FunctionType);
bool explicit_help_flag = false;
for (arg_t *arg = fn_info->args; arg; arg = arg->next) {
if (streq(arg->name, "help")) {
explicit_help_flag = true;
break;
}
}
env_t *main_env = fresh_scope(env);
Text_t usage = explicit_help_flag ? EMPTY_TEXT : Text(" [\x1b[1m--help\x1b[m]");
for (arg_t *arg = fn_info->args; arg; arg = arg->next) {
usage = Texts(usage, " ");
type_t *t = get_arg_type(main_env, arg);
OptionalText_t flag = flagify(arg->name, arg->default_val != NULL);
assert(flag.tag != TEXT_NONE);
OptionalText_t alias_flag = flagify(arg->alias, arg->default_val != NULL);
Text_t flags = Texts("\x1b[1m", flag, "\x1b[m");
if (alias_flag.tag != TEXT_NONE) flags = Texts(flags, ",\x1b[1m", alias_flag, "\x1b[m");
if (t->tag == BoolType || (t->tag == OptionalType && Match(t, OptionalType)->type->tag == BoolType))
flags = Texts(flags, "|\x1b[1m--no-", Text$without_prefix(flag, Text("--")), "\x1b[m");
if (arg->default_val || value_type(t)->tag == BoolType) {
if (t->tag == BoolType || (t->tag == OptionalType && Match(t, OptionalType)->type->tag == BoolType))
usage = Texts(usage, "[", flags, "]");
else if (t->tag == ListType) usage = Texts(usage, "[", flags, " ", get_flag_options(t, Text("|")), "]");
else usage = Texts(usage, "[", flags, " ", get_flag_options(t, Text("|")), "]");
} else {
usage = Texts(usage, "\x1b[1m", get_flag_options(t, Text("|")), "\x1b[m");
}
}
return usage;
}
static Text_t generate_help(env_t *env, type_t *fn_type) {
DeclareMatch(fn_info, fn_type, FunctionType);
env_t *main_env = fresh_scope(env);
Text_t help_text = EMPTY_TEXT;
for (arg_t *arg = fn_info->args; arg; arg = arg->next) {
help_text = Texts(help_text, "\n");
type_t *t = get_arg_type(main_env, arg);
OptionalText_t flag = flagify(arg->name, true);
assert(flag.tag != TEXT_NONE);
OptionalText_t alias_flag = flagify(arg->alias, true);
Text_t flags = Texts("\x1b[33;1m", flag, "\x1b[m");
if (alias_flag.tag != TEXT_NONE) flags = Texts(flags, ",\x1b[33;1m", alias_flag, "\x1b[m");
if (t->tag == BoolType || (t->tag == OptionalType && Match(t, OptionalType)->type->tag == BoolType))
flags = Texts(flags, "|\x1b[33;1m--no-", Text$without_prefix(flag, Text("--")), "\x1b[m");
if (t->tag == BoolType || (t->tag == OptionalType && Match(t, OptionalType)->type->tag == BoolType))
help_text = Texts(help_text, " ", flags);
else
help_text = Texts(help_text, " ", flags, " \x1b[1;34m", get_flag_options(t, Text("\x1b[m | \x1b[1;34m")),
"\x1b[m");
if (arg->comment.length > 0) help_text = Texts(help_text, " \x1b[3m", arg->comment, "\x1b[m");
if (arg->default_val) {
Text_t default_text =
Text$from_strn(arg->default_val->start, (size_t)(arg->default_val->end - arg->default_val->start));
help_text = Texts(help_text, " \x1b[2m(default:", default_text, ")\x1b[m");
}
}
return help_text;
}
public
Text_t compile_cli_arg_call(env_t *env, ast_t *ast, Text_t fn_name, type_t *fn_type, const char *version) {
DeclareMatch(fn_info, fn_type, FunctionType);
Text_t code = EMPTY_TEXT;
OptionalText_t usage = ast_metadata(ast, "USAGE");
if (usage.tag == TEXT_NONE) usage = generate_usage(env, fn_type);
OptionalText_t help = ast_metadata(ast, "HELP");
if (help.tag == TEXT_NONE) help = generate_help(env, fn_type);
code = Texts(code,
"Text_t usage = Texts(Text(\"\\x1b[1mUsage:\\x1b[m \"), "
"Text$from_str(argv[0]), Text(\" \")",
usage.length == 0 ? EMPTY_TEXT : Texts(", Text(", quoted_text(usage), ")"), ");\n",
"Text_t help = Texts(usage, Text(\"\\n\\n\"", quoted_text(help), "));\n");
for (arg_t *arg = fn_info->args; arg; arg = arg->next) {
code = Texts(code, compile_declaration(arg->type, Texts("_$", Text$from_str(arg->name))), " = ",
compile_empty(arg->type), ";\n");
}
Text_t version_code = quoted_str(version);
code = Texts(code, "cli_arg_t cli_args[] = {\n");
for (arg_t *arg = fn_info->args; arg; arg = arg->next) {
code = Texts(code, "{", quoted_text(Text$replace(Text$from_str(arg->name), Text("_"), Text("-"))), ", &",
Texts("_$", Text$from_str(arg->name)), ", ", compile_type_info(arg->type),
arg->default_val ? Text("") : Text(", .required=true"),
arg->alias ? Texts(", .short_flag=", quoted_text(Text$from_str(arg->alias)),
"[0]") // TODO: escape char properly
: Text(""),
"},\n");
}
code = Texts(code, "};\n");
code = Texts(code, "tomo_parse_args(argc, argv, usage, help, ", version_code,
", sizeof(cli_args)/sizeof(cli_args[0]), cli_args);\n");
// Lazily initialize default values to prevent side effects
int64_t i = 0;
for (arg_t *arg = fn_info->args; arg; arg = arg->next) {
if (arg->default_val) {
Text_t default_val;
if (arg->type) {
default_val = compile_to_type(env, arg->default_val, arg->type);
if (arg->type->tag != OptionalType) default_val = promote_to_optional(arg->type, default_val);
} else {
default_val = compile(env, arg->default_val);
}
code = Texts(code, "if (!cli_args[", i, "].populated) ", Texts("_$", Text$from_str(arg->name)), " = ",
default_val, ";\n");
}
i += 1;
}
code = Texts(code, fn_name, "(");
for (arg_t *arg = fn_info->args; arg; arg = arg->next) {
code = Texts(code, Texts("_$", arg->name));
if (arg->next) code = Texts(code, ", ");
}
code = Texts(code, ");\n");
return code;
}
public
Text_t compile_manpage(Text_t program, ast_t *ast, arg_t *args) {
OptionalText_t user_manpage = ast_metadata(ast, "MANPAGE");
if (user_manpage.tag != TEXT_NONE) {
return user_manpage;
}
OptionalText_t synopsys = ast_metadata(ast, "MANPAGE_SYNOPSYS");
OptionalText_t description = ast_metadata(ast, "MANPAGE_DESCRIPTION");
Text_t date = Text(""); // TODO: use date
Text_t man = Texts(".\\\" Automatically generated by Tomo\n"
".TH \"",
Text$upper(program, Text("C")), "\" \"1\" \"", date,
"\" \"\" \"\"\n"
".SH NAME\n",
program, " \\- ", synopsys.tag == TEXT_NONE ? Text("a Tomo program") : synopsys, "\n");
if (description.tag != TEXT_NONE) {
man = Texts(man, ".SH DESCRIPTION\n", description, "\n");
}
man = Texts(man, ".SH OPTIONS\n");
for (arg_t *arg = args; arg; arg = arg->next) {
OptionalText_t flag = flagify(arg->name, true);
assert(flag.tag != TEXT_NONE);
Text_t flags = Texts("\\f[B]", flag, "\\f[R]");
if (arg->alias) flags = Texts(flags, ", \\f[B]", flagify(arg->alias, true), "\\f[R]");
if (non_optional(arg->type)->tag == BoolType)
flags = Texts(flags, " | \\f[B]--no-", Text$without_prefix(flag, Text("--")), "\\f[R]");
man = Texts(man, "\n.TP\n", flags);
if (non_optional(arg->type)->tag != BoolType) {
Text_t options = Texts("\\f[I]", get_flag_options(arg->type, Text("\\f[R] | \\f[I]")), "\\f[R]");
man = Texts(man, " ", options);
}
if (arg->comment.length > 0) {
man = Texts(man, "\n", arg->comment);
}
}
return man;
}
|
