forked from lix-project/lix
98 lines
2.6 KiB
C++
98 lines
2.6 KiB
C++
#include "expr-to-xml.hh"
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#include "xml-writer.hh"
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#include "nixexpr-ast.hh"
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#include "aterm.hh"
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namespace nix {
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static XMLAttrs singletonAttrs(const string & name, const string & value)
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{
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XMLAttrs attrs;
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attrs[name] = value;
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return attrs;
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}
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static void printTermAsXML(Expr e, XMLWriter & doc)
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{
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XMLAttrs attrs;
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ATerm s;
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int i;
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ATermList as, es, formals;
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ATerm body, pos;
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if (matchStr(e, s))
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doc.writeEmptyElement("string", singletonAttrs("value", aterm2String(s)));
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else if (matchPath(e, s))
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doc.writeEmptyElement("path", singletonAttrs("value", aterm2String(s)));
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else if (matchUri(e, s))
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doc.writeEmptyElement("uri", singletonAttrs("value", aterm2String(s)));
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else if (matchNull(e))
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doc.writeEmptyElement("null");
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else if (matchInt(e, i))
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doc.writeEmptyElement("int", singletonAttrs("value", (format("%1%") % i).str()));
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else if (e == eTrue)
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doc.writeEmptyElement("bool", singletonAttrs("value", "true"));
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else if (e == eFalse)
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doc.writeEmptyElement("bool", singletonAttrs("value", "false"));
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else if (matchAttrs(e, as)) {
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XMLOpenElement _(doc, "attrs");
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ATermMap attrs(128);
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queryAllAttrs(e, attrs);
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StringSet names;
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for (ATermMap::const_iterator i = attrs.begin(); i != attrs.end(); ++i)
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names.insert(aterm2String(i->key));
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for (StringSet::iterator i = names.begin(); i != names.end(); ++i) {
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XMLOpenElement _(doc, "attr", singletonAttrs("name", *i));
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printTermAsXML(attrs.get(toATerm(*i)), doc);
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}
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}
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else if (matchList(e, es)) {
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XMLOpenElement _(doc, "list");
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for (ATermIterator i(es); i; ++i)
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printTermAsXML(*i, doc);
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}
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else if (matchFunction(e, formals, body, pos)) {
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XMLOpenElement _(doc, "function");
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for (ATermIterator i(formals); i; ++i) {
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Expr name; ValidValues valids; ATerm dummy;
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if (!matchFormal(*i, name, valids, dummy)) abort();
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XMLOpenElement _(doc, "arg", singletonAttrs("name", aterm2String(name)));
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ATermList valids2;
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if (matchValidValues(valids, valids2)) {
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for (ATermIterator j(valids2); j; ++j) {
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XMLOpenElement _(doc, "value");
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printTermAsXML(*j, doc);
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}
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}
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}
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}
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else
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doc.writeEmptyElement("unevaluated");
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}
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void printTermAsXML(Expr e, std::ostream & out)
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{
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XMLWriter doc(true, out);
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XMLOpenElement root(doc, "expr");
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printTermAsXML(e, doc);
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}
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}
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