* Compile the lexer as C++ code. Remove all the redundant C/C++

  marshalling code.

1 files changed, 0 insertions, 244 deletions

diff --git a/src/libexpr/parser.cc b/src/libexpr/parser.cc
deleted file mode 100644
index 20a6c9be2efd..000000000000
--- a/src/libexpr/parser.cc
+++ /dev/null
@@ -1,244 +0,0 @@
-#include "parser.hh"
-#include "aterm.hh"
-#include "util.hh"
-#include "nixexpr-ast.hh"
-    
-#include <sstream>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-
-extern "C" {
-
-#include "parser-tab.hh"
-#include "lexer-tab.h"
-    
-}
-
-namespace nix {
-
-
-struct ParseData 
-{
-    Expr result;
-    Path basePath;
-    Path path;
-    string error;
-};
- 
-}
-
-
-int yyparse(yyscan_t scanner, nix::ParseData * data);
-
-
-namespace nix {
-
-
-void setParseResult(ParseData * data, ATerm t)
-{
-    data->result = t;
-}
-
-ATerm absParsedPath(ParseData * data, ATerm t)
-{
-    return toATerm(absPath(aterm2String(t), data->basePath));
-}
-    
-void parseError(ParseData * data, char * error, int line, int column)
-{
-    data->error = (format("%1%, at `%2%':%3%:%4%")
-        % error % data->path % line % column).str();
-}
-        
-ATerm fixAttrs(int recursive, ATermList as)
-{
-    ATermList bs = ATempty, cs = ATempty;
-    ATermList * is = recursive ? &cs : &bs;
-    for (ATermIterator i(as); i; ++i) {
-        ATermList names;
-        Expr src;
-        ATerm pos;
-        if (matchInherit(*i, src, names, pos)) {
-            bool fromScope = matchScope(src);
-            for (ATermIterator j(names); j; ++j) {
-                Expr rhs = fromScope ? makeVar(*j) : makeSelect(src, *j);
-                *is = ATinsert(*is, makeBind(*j, rhs, pos));
-            }
-        } else bs = ATinsert(bs, *i);
-    }
-    if (recursive)
-        return makeRec(bs, cs);
-    else
-        return makeAttrs(bs);
-}
-
-const char * getPath(ParseData * data)
-{
-    return data->path.c_str();
-}
-
-extern "C" {
-Expr unescapeStr(const char * s)
-{
-    string t;
-    char c;
-    while ((c = *s++)) {
-        if (c == '\\') {
-            assert(*s);
-            c = *s++;
-            if (c == 'n') t += '\n';
-            else if (c == 'r') t += '\r';
-            else if (c == 't') t += '\t';
-            else t += c;
-        }
-        else if (c == '\r') {
-            /* Normalise CR and CR/LF into LF. */
-            t += '\n';
-            if (*s == '\n') s++; /* cr/lf */
-        }
-        else t += c;
-    }
-    return makeStr(toATerm(t));
-}
-}
-
-
-static void checkAttrs(ATermMap & names, ATermList bnds)
-{
-    for (ATermIterator i(bnds); i; ++i) {
-        ATerm name;
-        Expr e;
-        ATerm pos;
-        if (!matchBind(*i, name, e, pos)) abort(); /* can't happen */
-        if (names.get(name))
-            throw EvalError(format("duplicate attribute `%1%' at %2%")
-                % aterm2String(name) % showPos(pos));
-        names.set(name, name);
-    }
-}
-
-
-static void checkAttrSets(ATerm e)
-{
-    ATermList formals;
-    ATerm body, pos;
-    if (matchFunction(e, formals, body, pos)) {
-        ATermMap names(ATgetLength(formals));
-        for (ATermIterator i(formals); i; ++i) {
-            ATerm name;
-            ATerm d1, d2;
-            if (!matchFormal(*i, name, d1, d2)) abort();
-            if (names.get(name))
-                throw EvalError(format("duplicate formal function argument `%1%' at %2%")
-                    % aterm2String(name) % showPos(pos));
-            names.set(name, name);
-        }
-    }
-
-    ATermList bnds;
-    if (matchAttrs(e, bnds)) {
-        ATermMap names(ATgetLength(bnds));
-        checkAttrs(names, bnds);
-    }
-    
-    ATermList rbnds, nrbnds;
-    if (matchRec(e, rbnds, nrbnds)) {
-        ATermMap names(ATgetLength(rbnds) + ATgetLength(nrbnds));
-        checkAttrs(names, rbnds);
-        checkAttrs(names, nrbnds);
-    }
-    
-    if (ATgetType(e) == AT_APPL) {
-        int arity = ATgetArity(ATgetAFun(e));
-        for (int i = 0; i < arity; ++i)
-            checkAttrSets(ATgetArgument(e, i));
-    }
-
-    else if (ATgetType(e) == AT_LIST)
-        for (ATermIterator i((ATermList) e); i; ++i)
-            checkAttrSets(*i);
-}
-
-
-static Expr parse(EvalState & state,
-    const char * text, const Path & path,
-    const Path & basePath)
-{
-    yyscan_t scanner;
-    ParseData data;
-    data.basePath = basePath;
-    data.path = path;
-
-    yylex_init(&scanner);
-    yy_scan_string(text, scanner);
-    int res = yyparse(scanner, &data);
-    yylex_destroy(scanner);
-    
-    if (res) throw EvalError(data.error);
-
-    try {
-        checkVarDefs(state.primOps, data.result);
-    } catch (Error & e) {
-        throw EvalError(format("%1%, in `%2%'") % e.msg() % path);
-    }
-    
-    checkAttrSets(data.result);
-
-    return data.result;
-}
-
-
-Expr parseExprFromFile(EvalState & state, Path path)
-{
-    SwitchToOriginalUser sw;
-
-    assert(path[0] == '/');
-
-#if 0
-    /* Perhaps this is already an imploded parse tree? */
-    Expr e = ATreadFromNamedFile(path.c_str());
-    if (e) return e;
-#endif
-
-    /* If `path' is a symlink, follow it.  This is so that relative
-       path references work. */
-    struct stat st;
-    if (lstat(path.c_str(), &st))
-        throw SysError(format("getting status of `%1%'") % path);
-    if (S_ISLNK(st.st_mode)) path = absPath(readLink(path), dirOf(path));
-
-    /* If `path' refers to a directory, append `/default.nix'. */
-    if (stat(path.c_str(), &st))
-        throw SysError(format("getting status of `%1%'") % path);
-    if (S_ISDIR(st.st_mode))
-        path = canonPath(path + "/default.nix");
-
-    /* Read the input file.  We can't use SGparseFile() because it's
-       broken, so we read the input ourselves and call
-       SGparseString(). */
-    AutoCloseFD fd = open(path.c_str(), O_RDONLY);
-    if (fd == -1) throw SysError(format("opening `%1%'") % path);
-
-    if (fstat(fd, &st) == -1)
-        throw SysError(format("statting `%1%'") % path);
-
-    char text[st.st_size + 1];
-    readFull(fd, (unsigned char *) text, st.st_size);
-    text[st.st_size] = 0;
-
-    return parse(state, text, path, dirOf(path));
-}
-
-
-Expr parseExprFromString(EvalState & state,
-    const string & s, const Path & basePath)
-{
-    return parse(state, s.c_str(), "(string)", basePath);
-}
-
- 
-}