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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
#undef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <stdlib.h>
#include "ast/ast.h"
#include "ast/ast_accessors.h"
#include "ast/ast_redirect.h"
#include "lexer/token.h"
#define BUFFER_SIZE 10000
static char *_type_to_string[] = { [AST_LOGICAL] = "logical block",
[AST_COMMAND] = "command",
[AST_IF] = "conditionnal block",
[AST_LIST] = "list",
[AST_PIPELINE] = "pipeline",
[AST_REDIRECTION] = "redirection",
[AST_WHILE] = "while",
[AST_ASSIGN] = "assign",
[AST_FOR] = "for" };
typedef char *(*tostring)(struct ast *);
static char *_args_tostring(struct string **args)
{
struct string *output = string_create(NULL);
size_t i = 0;
while (args[i])
{
struct string *c = string_deepcopy(args[i++]);
string_catenate(output, c);
if (args[i])
string_pushstr(output, " - ");
}
char *data = output->data;
free(output);
return data;
}
static char *_ast_command_tostring(struct ast *ast)
{
char buf[BUFFER_SIZE] = { 0 };
char *args_to_string = _args_tostring(((struct ast_command *)ast)->args);
int len = snprintf(buf, BUFFER_SIZE, "%s\\nargs: %s",
_type_to_string[ast->type], args_to_string);
free(args_to_string);
char *str = malloc((len + 1) * sizeof(char));
for (int i = 0; i < len; i++)
{
str[i] = buf[i];
}
str[len] = 0;
return str;
}
static char *_ast_if_tostring(struct ast *ast)
{
char buf[BUFFER_SIZE] = { 0 };
int len = snprintf(buf, BUFFER_SIZE, "%s\\n", _type_to_string[ast->type]);
char *str = malloc((len + 1) * sizeof(char));
for (int i = 0; i < len; i++)
{
str[i] = buf[i];
}
str[len] = 0;
return str;
}
static char *_get_token_type_to_str(struct ast *ast)
{
enum token_type t = ((struct ast_logical *)ast)->type;
switch (t)
{
case TOKEN_AND:
return "&&";
case TOKEN_OR:
return "||";
case TOKEN_NEG:
return "!";
default:
return "unknown";
}
}
static char *_ast_logical_tostring(struct ast *ast)
{
char buf[BUFFER_SIZE] = { 0 };
int len = snprintf(buf, BUFFER_SIZE, "%s\\n%s", _type_to_string[ast->type],
_get_token_type_to_str(ast));
char *str = malloc((len + 1) * sizeof(char));
for (int i = 0; i < len; i++)
{
str[i] = buf[i];
}
str[len] = 0;
return str;
}
static char *_ast_list_tostring(struct ast *ast)
{
char buf[BUFFER_SIZE] = { 0 };
size_t nb_c = ((struct ast_list *)ast)->nb_children;
int len = snprintf(buf, BUFFER_SIZE, "%s\\n%lu child(ren)",
_type_to_string[ast->type], nb_c);
char *str = malloc((len + 1) * sizeof(char));
for (int i = 0; i < len; i++)
{
str[i] = buf[i];
}
str[len] = 0;
return str;
}
static char *_ast_pipeline_tostring(struct ast *ast)
{
char buf[BUFFER_SIZE] = { 0 };
int len = snprintf(buf, BUFFER_SIZE, "%s\\nleft | right",
_type_to_string[ast->type]);
char *str = malloc((len + 1) * sizeof(char));
for (int i = 0; i < len; i++)
{
str[i] = buf[i];
}
str[len] = 0;
return str;
}
static char *_ast_assign_tostring(struct ast *ast)
{
char buf[BUFFER_SIZE] = { 0 };
struct string *name = ((struct ast_assign *)ast)->name;
struct string *value = ((struct ast_assign *)ast)->val;
int len = snprintf(buf, BUFFER_SIZE, "%s\\n%s=%s",
_type_to_string[ast->type], name->data, value->data);
char *str = malloc((len + 1) * sizeof(char));
for (int i = 0; i < len; i++)
{
str[i] = buf[i];
}
str[len] = 0;
return str;
}
static char *_ast_redirection_tostring(struct ast *ast)
{
struct redirect r = ((struct ast_redirection *)ast)->redirect;
char buf[BUFFER_SIZE] = { 0 };
int len =
snprintf(buf, BUFFER_SIZE, "%s\\n%s %s %s", _type_to_string[ast->type],
r.fd->data, r.redir->data, r.file->data);
char *str = malloc((len + 1) * sizeof(char));
for (int i = 0; i < len; i++)
{
str[i] = buf[i];
}
str[len] = 0;
return str;
}
static char *_ast_while_tostring(struct ast *ast)
{
char buf[BUFFER_SIZE] = { 0 };
int len = snprintf(buf, BUFFER_SIZE, "%s\\nleft is cond\nright is body",
_type_to_string[ast->type]);
char *str = malloc((len + 1) * sizeof(char));
for (int i = 0; i < len; i++)
{
str[i] = buf[i];
}
str[len] = 0;
return str;
}
static char *_ast_for_tostring(struct ast *ast)
{
char buf[BUFFER_SIZE] = { 0 };
int len = snprintf(buf, BUFFER_SIZE, "%s\\nleft is words\nright is body",
_type_to_string[ast->type]);
char *str = malloc((len + 1) * sizeof(char));
for (int i = 0; i < len; i++)
{
str[i] = buf[i];
}
str[len] = 0;
return str;
}
static const tostring _node_to_string_ltable[] = {
[AST_LOGICAL] = _ast_logical_tostring,
[AST_COMMAND] = _ast_command_tostring,
[AST_IF] = _ast_if_tostring,
[AST_LIST] = _ast_list_tostring,
[AST_PIPELINE] = _ast_pipeline_tostring,
[AST_REDIRECTION] = _ast_redirection_tostring,
[AST_WHILE] = _ast_while_tostring,
[AST_ASSIGN] = _ast_assign_tostring,
[AST_FOR] = _ast_for_tostring
};
static char *_ast_to_string(struct ast *ast)
{
return _node_to_string_ltable[ast->type](ast);
}
static void _pretty_print_internal(struct ast *ast, FILE *f)
{
if (!ast)
{
return;
}
char *format = _ast_to_string(ast);
fprintf(f, "\t%lu [label=\"%s\"];\n", (size_t)ast, format);
free(format);
size_t i = 0;
struct ast *child = NULL;
do
{
child = get_i(ast, i);
if (!child)
{
break;
}
i++;
fprintf(f, "\t%lu -- %lu;\n", (size_t)ast, (size_t)child);
_pretty_print_internal(child, f);
} while (child);
}
void pretty_print(struct ast *ast)
{
FILE *f = fopen("ast.dot", "w");
if (!f)
{
fprintf(stderr,
"pretty_print: unable to open a file to write the DOT AST.\n");
return;
}
fprintf(f, "graph {\n");
_pretty_print_internal(ast, f);
fprintf(f, "}\n");
fclose(f);
}
|
