commit 11e4a24e6edbd1f69b60a194b31ac2d7c4dd5034
Author: Juergen Spitzmueller <sp...@lyx.org>
Date:   Sat Mar 10 15:00:30 2018 +0100

    tex2lyx: get rid of another large if-else if chain.
---
 src/tex2lyx/Preamble.cpp |  153 ++++++++++++++++++++++++++++++---------------
 1 files changed, 102 insertions(+), 51 deletions(-)

diff --git a/src/tex2lyx/Preamble.cpp b/src/tex2lyx/Preamble.cpp
index 1617ced..a59d51d 100644
--- a/src/tex2lyx/Preamble.cpp
+++ b/src/tex2lyx/Preamble.cpp
@@ -1451,14 +1451,18 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                     t.cat() == catBegin ||
                     t.cat() == catEnd ||
                     t.cat() == catAlign ||
-                    t.cat() == catParameter))
+                    t.cat() == catParameter)) {
                        h_preamble << t.cs();
+                       continue;
+               }
 
-               else if (!in_lyx_preamble &&
-                        (t.cat() == catSpace || t.cat() == catNewline))
+               if (!in_lyx_preamble &&
+                   (t.cat() == catSpace || t.cat() == catNewline)) {
                        h_preamble << t.asInput();
+                       continue;
+               }
 
-               else if (t.cat() == catComment) {
+               if (t.cat() == catComment) {
                        static regex const islyxfile("%% LyX .* created this 
file");
                        static regex const usercommands("User specified LaTeX 
commands");
 
@@ -1483,18 +1487,22 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                in_lyx_preamble = false;
                        else if (!in_lyx_preamble)
                                h_preamble << t.asInput();
+                       continue;
                }
 
-               else if (t.cs() == "PassOptionsToPackage") {
+               if (t.cs() == "PassOptionsToPackage") {
                        string const poptions = p.getArg('{', '}');
                        string const package = p.verbatim_item();
                        extra_package_options_.insert(make_pair(package, 
poptions));
+                       continue;
                }
 
-               else if (t.cs() == "pagestyle")
+               if (t.cs() == "pagestyle") {
                        h_paperpagestyle = p.verbatim_item();
+                       continue;
+               }
 
-               else if (t.cs() == "setdefaultlanguage") {
+               if (t.cs() == "setdefaultlanguage") {
                        xetex = true;
                        // We don't yet care about non-language variant options
                        // because LyX doesn't support this yet, see bug #8214
@@ -1517,22 +1525,25 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                h_language = p.verbatim_item();
                        //finally translate the poyglossia name to a LyX name
                        h_language = polyglossia2lyx(h_language);
+                       continue;
                }
 
-               else if (t.cs() == "setotherlanguage") {
+               if (t.cs() == "setotherlanguage") {
                        // We don't yet care about the option because LyX 
doesn't
                        // support this yet, see bug #8214
                        p.hasOpt() ? p.getOpt() : string();
                        p.verbatim_item();
+                       continue;
                }
 
-               else if (t.cs() == "setmainfont") {
+               if (t.cs() == "setmainfont") {
                        // we don't care about the option
                        p.hasOpt() ? p.getOpt() : string();
                        h_font_roman[1] = p.getArg('{', '}');
+                       continue;
                }
 
-               else if (t.cs() == "setsansfont" || t.cs() == "setmonofont") {
+               if (t.cs() == "setsansfont" || t.cs() == "setmonofont") {
                        // LyX currently only supports the scale option
                        string scale;
                        if (p.hasOpt()) {
@@ -1556,6 +1567,7 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                        h_font_tt_scale[1] = scale;
                                h_font_typewriter[1] = p.getArg('{', '}');
                        }
+                       continue;
                }
 
                else if (t.cs() == "date") {
@@ -1566,7 +1578,7 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                h_preamble << t.asInput() << '{' << argument << 
'}';
                }
 
-               else if (t.cs() == "color") {
+               if (t.cs() == "color") {
                        string const space =
                                (p.hasOpt() ? p.getOpt() : string());
                        string argument = p.getArg('{', '}');
@@ -1587,9 +1599,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                // is parsed before this
                                h_fontcolor = "";
                        }
+                       continue;
                }
 
-               else if (t.cs() == "pagecolor") {
+               if (t.cs() == "pagecolor") {
                        string argument = p.getArg('{', '}');
                        // check the case that a standard color is used
                        if (is_known(argument, known_basic_colors)) {
@@ -1604,24 +1617,28 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                // is parsed before this
                                h_backgroundcolor = "";
                        }
+                       continue;
                }
 
-               else if (t.cs() == "makeatletter") {
+               if (t.cs() == "makeatletter") {
                        // LyX takes care of this
                        p.setCatcode('@', catLetter);
+                       continue;
                }
 
-               else if (t.cs() == "makeatother") {
+               if (t.cs() == "makeatother") {
                        // LyX takes care of this
                        p.setCatcode('@', catOther);
+                       continue;
                }
 
-               else if (t.cs() == "makeindex") {
+               if (t.cs() == "makeindex") {
                        // LyX will re-add this if a print index command is 
found
                        p.skip_spaces();
+                       continue;
                }
 
-               else if (t.cs() == "newindex") {
+               if (t.cs() == "newindex") {
                        string const indexname = p.getArg('[', ']');
                        string const shortcut = p.verbatim_item();
                        if (!indexname.empty())
@@ -1631,17 +1648,21 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                        h_shortcut[index_number] = shortcut;
                        index_number += 1;
                        p.skip_spaces();
+                       continue;
                }
 
-               else if (t.cs() == "addbibresource")
+               if (t.cs() == "addbibresource") {
                        
biblatex_bibliographies.push_back(removeExtension(p.getArg('{', '}')));
+                       continue;
+               }
 
-               else if (t.cs() == "bibliography") {
+               if (t.cs() == "bibliography") {
                        vector<string> bibs = getVectorFromString(p.getArg('{', 
'}'));
                        
biblatex_bibliographies.insert(biblatex_bibliographies.end(), bibs.begin(), 
bibs.end());
+                       continue;
                }
 
-               else if (t.cs() == "RS@ifundefined") {
+               if (t.cs() == "RS@ifundefined") {
                        string const name = p.verbatim_item();
                        string const body1 = p.verbatim_item();
                        string const body2 = p.verbatim_item();
@@ -1657,9 +1678,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                   << '{' << body2 << '}';
                                h_preamble << ss.str();
                        }
+                       continue;
                }
 
-               else if (t.cs() == "AtBeginDocument") {
+               if (t.cs() == "AtBeginDocument") {
                        string const name = p.verbatim_item();
                        // only non-lyxspecific stuff
                        if (in_lyx_preamble &&
@@ -1685,15 +1707,16 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                ss << '{' << name << '}';
                                h_preamble << ss.str();
                        }
+                       continue;
                }
 
-               else if (t.cs() == "newcommand" || t.cs() == "newcommandx"
-                     || t.cs() == "renewcommand" || t.cs() == "renewcommandx"
-                     || t.cs() == "providecommand" || t.cs() == 
"providecommandx"
-                               || t.cs() == "DeclareRobustCommand"
-                     || t.cs() == "DeclareRobustCommandx"
-                               || t.cs() == "ProvideTextCommandDefault"
-                               || t.cs() == "DeclareMathAccent") {
+               if (t.cs() == "newcommand" || t.cs() == "newcommandx"
+                   || t.cs() == "renewcommand" || t.cs() == "renewcommandx"
+                   || t.cs() == "providecommand" || t.cs() == "providecommandx"
+                   || t.cs() == "DeclareRobustCommand"
+                   || t.cs() == "DeclareRobustCommandx"
+                   || t.cs() == "ProvideTextCommandDefault"
+                   || t.cs() == "DeclareMathAccent") {
                        bool star = false;
                        if (p.next_token().character() == '*') {
                                p.get_token();
@@ -1762,9 +1785,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                        }
                        // restore the in_lyx_preamble setting
                        in_lyx_preamble = was_in_lyx_preamble;
+                       continue;
                }
 
-               else if (t.cs() == "documentclass") {
+               if (t.cs() == "documentclass") {
                        vector<string>::iterator it;
                        vector<string> opts = split_options(p.getArg('[', ']'));
                        handle_opt(opts, known_fontsizes, h_paperfontsize);
@@ -1835,9 +1859,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                        //       different name in LyX than in LaTeX
                        h_textclass = p.getArg('{', '}');
                        p.skip_spaces();
+                       continue;
                }
 
-               else if (t.cs() == "usepackage") {
+               if (t.cs() == "usepackage") {
                        string const options = p.getArg('[', ']');
                        string const name = p.getArg('{', '}');
                        vector<string> vecnames;
@@ -1847,9 +1872,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                        for (; it != end; ++it)
                                handle_package(p, trimSpaceAndEol(*it), options,
                                               in_lyx_preamble, detectEncoding);
+                       continue;
                }
 
-               else if (t.cs() == "inputencoding") {
+               if (t.cs() == "inputencoding") {
                        string const encoding = p.getArg('{','}');
                        Encoding const * const enc = encodings.fromLaTeXName(
                                encoding, Encoding::inputenc, true);
@@ -1862,9 +1888,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                        h_inputencoding = enc->name();
                                p.setEncoding(enc->iconvName());
                        }
+                       continue;
                }
 
-               else if (t.cs() == "newenvironment") {
+               if (t.cs() == "newenvironment") {
                        string const name = p.getArg('{', '}');
                        string const opt1 = p.getFullOpt();
                        string const opt2 = p.getFullOpt();
@@ -1877,10 +1904,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                        }
                        add_known_environment(name, opt1, !opt2.empty(),
                                              from_utf8(beg), from_utf8(end));
-
+                       continue;
                }
 
-               else if (t.cs() == "newtheorem") {
+               if (t.cs() == "newtheorem") {
                        bool star = false;
                        if (p.next_token().character() == '*') {
                                p.get_token();
@@ -1900,9 +1927,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
 
                        if (!in_lyx_preamble)
                                h_preamble << complete;
+                       continue;
                }
 
-               else if (t.cs() == "def") {
+               if (t.cs() == "def") {
                        string name = p.get_token().cs();
                        // In fact, name may be more than the name:
                        // In the test case of bug 8116
@@ -1913,9 +1941,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                        if (!in_lyx_preamble)
                                h_preamble << "\\def\\" << name << '{'
                                           << p.verbatim_item() << "}";
+                       continue;
                }
 
-               else if (t.cs() == "newcolumntype") {
+               if (t.cs() == "newcolumntype") {
                        string const name = p.getArg('{', '}');
                        trimSpaceAndEol(name);
                        int nargs = 0;
@@ -1929,9 +1958,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                        if (nargs)
                                h_preamble << "[" << nargs << "]";
                        h_preamble << "{" << p.verbatim_item() << "}";
+                       continue;
                }
 
-               else if (t.cs() == "setcounter") {
+               if (t.cs() == "setcounter") {
                        string const name = p.getArg('{', '}');
                        string const content = p.getArg('{', '}');
                        if (name == "secnumdepth")
@@ -1940,9 +1970,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                h_tocdepth = content;
                        else
                                h_preamble << "\\setcounter{" << name << "}{" 
<< content << "}";
+                       continue;
                }
 
-               else if (t.cs() == "setlength") {
+               if (t.cs() == "setlength") {
                        string const name = p.verbatim_item();
                        string const content = p.verbatim_item();
                        // the paragraphs are only not indented when \parindent 
is set to zero
@@ -1964,18 +1995,25 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                h_mathindentation = translate_len(content);
                        } else
                                h_preamble << "\\setlength{" << name << "}{" << 
content << "}";
+                       continue;
                }
 
-               else if (t.cs() == "onehalfspacing")
+               if (t.cs() == "onehalfspacing") {
                        h_spacing = "onehalf";
+                       continue;
+               }
 
-               else if (t.cs() == "doublespacing")
+               if (t.cs() == "doublespacing") {
                        h_spacing = "double";
+                       continue;
+               }
 
-               else if (t.cs() == "setstretch")
+               if (t.cs() == "setstretch") {
                        h_spacing = "other " + p.verbatim_item();
+                       continue;
+               }
 
-               else if (t.cs() == "synctex") {
+               if (t.cs() == "synctex") {
                        // the scheme is \synctex=value
                        // where value can only be "1" or "-1"
                        h_output_sync = "1";
@@ -1986,21 +2024,24 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                        if (value == "-")
                                value += p.get_token().asInput();
                        h_output_sync_macro = "\\synctex=" + value;
+                       continue;
                }
 
-               else if (t.cs() == "begin") {
+               if (t.cs() == "begin") {
                        string const name = p.getArg('{', '}');
                        if (name == "document")
                                break;
                        h_preamble << "\\begin{" << name << "}";
+                       continue;
                }
 
-               else if (t.cs() == "geometry") {
+               if (t.cs() == "geometry") {
                        vector<string> opts = split_options(p.getArg('{', '}'));
                        handle_geometry(opts);
+                       continue;
                }
 
-               else if (t.cs() == "definecolor") {
+               if (t.cs() == "definecolor") {
                        string const color = p.getArg('{', '}');
                        string const space = p.getArg('{', '}');
                        string const value = p.getArg('{', '}');
@@ -2021,12 +2062,15 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                           << "}{" << space << "}{" << value
                                           << '}';
                        }
+                       continue;
                }
 
-               else if (t.cs() == "bibliographystyle")
+               if (t.cs() == "bibliographystyle") {
                        h_biblio_style = p.verbatim_item();
+                       continue;
+               }
 
-               else if (t.cs() == "jurabibsetup") {
+               if (t.cs() == "jurabibsetup") {
                        // FIXME p.getArg('{', '}') is most probably wrong (it
                        //       does not handle nested braces).
                        //       Use p.verbatim_item() instead.
@@ -2038,9 +2082,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                h_preamble << "\\jurabibsetup{"
                                           << join(jurabibsetup, ",") << '}';
                        }
+                       continue;
                }
 
-               else if (t.cs() == "hypersetup") {
+               if (t.cs() == "hypersetup") {
                        vector<string> hypersetup =
                                split_options(p.verbatim_item());
                        // add hypersetup to the hyperref package options
@@ -2049,9 +2094,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                h_preamble << "\\hypersetup{"
                                           << join(hypersetup, ",") << '}';
                        }
+                       continue;
                }
 
-               else if (t.cs() == "includeonly") {
+               if (t.cs() == "includeonly") {
                        vector<string> includeonlys = 
getVectorFromString(p.getArg('{', '}'));
                        for (auto & iofile : includeonlys) {
                                string filename(normalize_filename(iofile));
@@ -2076,9 +2122,10 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                outname = changeExtension(filename, "lyx");
                                h_includeonlys.push_back(outname);
                        }
+                       continue;
                }
 
-               else if (is_known(t.cs(), known_if_3arg_commands)) {
+               if (is_known(t.cs(), known_if_3arg_commands)) {
                        // prevent misparsing of \usepackage if it is used
                        // as an argument (see e.g. our own output of
                        // \@ifundefined above)
@@ -2115,18 +2162,22 @@ void Preamble::parse(Parser & p, string const & 
forceclass,
                                           << '{' << arg2 << '}'
                                           << '{' << arg3 << '}';
                        }
+                       continue;
                }
 
-               else if (is_known(t.cs(), known_if_commands)) {
+               if (is_known(t.cs(), known_if_commands)) {
                        // must not parse anything in conditional code, since
                        // LyX would output the parsed contents unconditionally
                        if (!in_lyx_preamble)
                                h_preamble << t.asInput();
                        handle_if(p, in_lyx_preamble);
+                       continue;
                }
 
-               else if (!t.cs().empty() && !in_lyx_preamble)
+               if (!t.cs().empty() && !in_lyx_preamble) {
                        h_preamble << '\\' << t.cs();
+                       continue;
+               }
        }
 
        // remove the whitespace

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