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
|
#include "expr-to-xml.hh"
#include "xml-writer.hh"
#include "nixexpr-ast.hh"
#include "aterm.hh"
#include "util.hh"
#include <cstdlib>
namespace nix {
static XMLAttrs singletonAttrs(const string & name, const string & value)
{
XMLAttrs attrs;
attrs[name] = value;
return attrs;
}
/* set<Expr> is safe because all the expressions are also reachable
from the stack, therefore can't be garbage-collected. */
typedef set<Expr> ExprSet;
static void printTermAsXML(Expr e, XMLWriter & doc, PathSet & context,
ExprSet & drvsSeen);
static void showAttrs(const ATermMap & attrs, XMLWriter & doc,
PathSet & context, ExprSet & drvsSeen)
{
StringSet names;
for (ATermMap::const_iterator i = attrs.begin(); i != attrs.end(); ++i)
names.insert(aterm2String(i->key));
for (StringSet::iterator i = names.begin(); i != names.end(); ++i) {
ATerm attrRHS = attrs.get(toATerm(*i));
ATerm attr;
Pos pos;
XMLAttrs xmlAttrs;
xmlAttrs["name"] = *i;
if(matchAttrRHS(attrRHS, attr, pos)) {
ATerm path;
int line, column;
if (matchPos(pos, path, line, column)) {
xmlAttrs["path"] = aterm2String(path);
xmlAttrs["line"] = (format("%1%") % line).str();
xmlAttrs["column"] = (format("%1%") % column).str();
}
} else
abort(); // Should not happen.
XMLOpenElement _(doc, "attr", xmlAttrs);
printTermAsXML(attr, doc, context, drvsSeen);
}
}
static void printPatternAsXML(Pattern pat, XMLWriter & doc)
{
ATerm name;
ATermList formals;
Pattern pat1, pat2;
ATermBool ellipsis;
if (matchVarPat(pat, name))
doc.writeEmptyElement("varpat", singletonAttrs("name", aterm2String(name)));
else if (matchAttrsPat(pat, formals, ellipsis)) {
XMLOpenElement _(doc, "attrspat");
for (ATermIterator i(formals); i; ++i) {
Expr name; ATerm dummy;
if (!matchFormal(*i, name, dummy)) abort();
doc.writeEmptyElement("attr", singletonAttrs("name", aterm2String(name)));
}
if (ellipsis == eTrue) doc.writeEmptyElement("ellipsis");
}
else if (matchAtPat(pat, pat1, pat2)) {
XMLOpenElement _(doc, "at");
printPatternAsXML(pat1, doc);
printPatternAsXML(pat2, doc);
}
}
static void printTermAsXML(Expr e, XMLWriter & doc, PathSet & context,
ExprSet & drvsSeen)
{
XMLAttrs attrs;
string s;
ATerm s2;
int i;
ATermList as, es;
ATerm pat, body, pos;
checkInterrupt();
if (matchStr(e, s, context)) /* !!! show the context? */
doc.writeEmptyElement("string", singletonAttrs("value", s));
else if (matchPath(e, s2))
doc.writeEmptyElement("path", singletonAttrs("value", aterm2String(s2)));
else if (matchNull(e))
doc.writeEmptyElement("null");
else if (matchInt(e, i))
doc.writeEmptyElement("int", singletonAttrs("value", (format("%1%") % i).str()));
else if (e == eTrue)
doc.writeEmptyElement("bool", singletonAttrs("value", "true"));
else if (e == eFalse)
doc.writeEmptyElement("bool", singletonAttrs("value", "false"));
else if (matchAttrs(e, as)) {
ATermMap attrs;
queryAllAttrs(e, attrs, true);
Expr aRHS = attrs.get(toATerm("type"));
Expr a = NULL;
if (aRHS)
matchAttrRHS(aRHS, a, pos);
if (a && matchStr(a, s, context) && s == "derivation") {
XMLAttrs xmlAttrs;
Path outPath, drvPath;
a = attrs.get(toATerm("drvPath"));
if (matchStr(a, drvPath, context))
xmlAttrs["drvPath"] = drvPath;
a = attrs.get(toATerm("outPath"));
if (matchStr(a, outPath, context))
xmlAttrs["outPath"] = outPath;
XMLOpenElement _(doc, "derivation", xmlAttrs);
if (drvsSeen.find(e) == drvsSeen.end()) {
drvsSeen.insert(e);
showAttrs(attrs, doc, context, drvsSeen);
} else
doc.writeEmptyElement("repeated");
}
else {
XMLOpenElement _(doc, "attrs");
showAttrs(attrs, doc, context, drvsSeen);
}
}
else if (matchList(e, es)) {
XMLOpenElement _(doc, "list");
for (ATermIterator i(es); i; ++i)
printTermAsXML(*i, doc, context, drvsSeen);
}
else if (matchFunction(e, pat, body, pos)) {
ATerm path;
int line, column;
XMLAttrs xmlAttrs;
if (matchPos(pos, path, line, column)) {
xmlAttrs["path"] = aterm2String(path);
xmlAttrs["line"] = (format("%1%") % line).str();
xmlAttrs["column"] = (format("%1%") % column).str();
}
XMLOpenElement _(doc, "function", xmlAttrs);
printPatternAsXML(pat, doc);
}
else
doc.writeEmptyElement("unevaluated");
}
void printTermAsXML(Expr e, std::ostream & out, PathSet & context)
{
XMLWriter doc(true, out);
XMLOpenElement root(doc, "expr");
ExprSet drvsSeen;
printTermAsXML(e, doc, context, drvsSeen);
}
}
|
