namespace {
+MathScriptInset * prevScriptInset(MathArray const & array)
+{
+ MathInset * p = array.back();
+ return (p && p->isScriptInset()) ? static_cast<MathScriptInset *>(p) : 0;
+}
+
+
+MathInset * lastScriptInset(MathArray & array, bool up, bool down, int limits)
+{
+ MathScriptInset * p = prevScriptInset(array);
+ if (!p) {
+ MathInset * b = array.back();
+ if (b && b->isScriptable()) {
+ p = new MathScriptInset(up, down, b->clone());
+ array.pop_back();
+ } else {
+ p = new MathScriptInset(up, down);
+ }
+ array.push_back(p);
+ }
+ if (up)
+ p->up(true);
+ if (down)
+ p->down(down);
+ if (limits)
+ p->limits(limits);
+ return p;
+}
+
+
// These are lexical codes, not semantic
enum lexcode_enum {
LexNone,
lexcode_enum lexcode[256];
-void mathed_parse_into(MathArray & array, unsigned flags);
-
-unsigned char getuchar(std::istream * is)
-{
- char c = 0;
- is->get(c);
- if (!is->good())
- lyxerr << "The input stream is not well..." << endl;
-
- return static_cast<unsigned char>(c);
-}
-
const unsigned char LM_TK_OPEN = '{';
const unsigned char LM_TK_CLOSE = '}';
FLAG_OPTARG = 1 << 10 // reads an argument in []
};
-///
-struct {
- ///
- int i;
- ///
- latexkeys const * l;
-} yylval;
-
-
-
-string yytext;
-int yylineno;
-istream * yyis;
-
-
struct latex_mathenv_type {
char const * name;
-void mathPrintError(string const & msg)
-{
- //lyxerr[Debug::MATHED] << "Line ~" << yylineno << ": Math parse error: " << msg << endl;
- lyxerr << "Line ~" << yylineno << ": Math parse error: " << msg << endl;
-}
-
-
void lexInit()
{
for (int i = 0; i <= 255; ++i) {
}
-string lexArg(unsigned char lf, bool accept_spaces = false)
+
+//
+// Helper class for parsing
+//
+
+
+class Parser {
+public:
+ ///
+ Parser(LyXLex & lex) : is_(lex.getStream()), lineno_(lex.getLineNo()) {}
+ ///
+ Parser(istream & is) : is_(is), lineno_(0) {}
+
+ ///
+ MathMacroTemplate * parse_macro();
+ ///
+ MathMatrixInset * parse_normal();
+ ///
+ void parse_into(MathArray & array, unsigned flags);
+ ///
+ int lineno() const { return lineno_; }
+
+private:
+ ///
+ int yylex();
+ ///
+ string lexArg(unsigned char lf, bool accept_spaces = false);
+ ///
+ unsigned char getuchar();
+ ///
+ void error(string const & msg);
+ ///
+ void parse_lines(MathGridInset * p, int col, bool numbered, bool outmost);
+ ///
+ latexkeys const * read_delim();
+
+private:
+ ///
+ istream & is_;
+ ///
+ int lineno_;
+
+ ///
+ int ival_;
+ ///
+ latexkeys const * lval_;
+ ///
+ string sval_;
+
+ ///
+ bool curr_num_;
+ //
+ string curr_label_;
+};
+
+
+unsigned char Parser::getuchar()
+{
+ char c = 0;
+ is_.get(c);
+ if (!is_.good())
+ lyxerr << "The input stream is not well..." << endl;
+ return static_cast<unsigned char>(c);
+}
+
+
+string Parser::lexArg(unsigned char lf, bool accept_spaces = false)
{
string result;
unsigned char c = 0;
- while (yyis->good()) {
- c = getuchar(yyis);
+ while (is_.good()) {
+ c = getuchar();
if (!isspace(c))
break;
}
if (c != lf) {
- yyis->putback(c);
+ is_.putback(c);
return result;
}
int depth = 1;
do {
- unsigned char c = getuchar(yyis);
+ unsigned char c = getuchar();
if (c == lf)
++depth;
if (c == rg)
--depth;
if ((!isspace(c) || (c == ' ' && accept_spaces)) && depth > 0)
result += c;
- } while (depth > 0 && yyis->good());
+ } while (depth > 0 && is_.good());
return result;
}
-int yylex()
+int Parser::yylex()
{
static bool init_done = false;
init_done = true;
}
- while (yyis->good()) {
- unsigned char c = getuchar(yyis);
+ while (is_.good()) {
+ unsigned char c = getuchar();
//lyxerr << "reading byte: '" << c << "' code: " << lexcode[c] << endl;
if (lexcode[c] == LexNewLine) {
- ++yylineno;
+ ++lineno_;
continue;
} else if (lexcode[c] == LexComment) {
do {
- c = getuchar(yyis);
- } while (c != '\n' && yyis->good()); // eat comments
+ c = getuchar();
+ } while (c != '\n' && is_.good()); // eat comments
} else if (lexcode[c] == LexOther) {
- yylval.i = c;
+ ival_ = c;
return LM_TK_STR;
} else if (lexcode[c] == LexAlpha || lexcode[c] == LexSpace) {
- yylval.i = c;
+ ival_ = c;
return LM_TK_ALPHA;
} else if (lexcode[c] == LexBOP) {
- yylval.i = c;
+ ival_ = c;
return LM_TK_BOP;
} else if (lexcode[c] == LexMath) {
- yylval.i = 0;
+ ival_ = 0;
return LM_TK_MATH;
} else if (lexcode[c] == LexSelf) {
return c;
} else if (lexcode[c] == LexArgument) {
- c = getuchar(yyis);
- yylval.i = c - '0';
+ c = getuchar();
+ ival_ = c - '0';
return LM_TK_ARGUMENT;
} else if (lexcode[c] == LexOpen) {
return LM_TK_OPEN;
} else if (lexcode[c] == LexClose) {
return LM_TK_CLOSE;
} else if (lexcode[c] == LexESC) {
- c = getuchar(yyis);
+ c = getuchar();
//lyxerr << "reading second byte: '" << c << "' code: " << lexcode[c] << endl;
string s;
s += c;
//lyxerr << "found key: " << l << endl;
//lyxerr << "found key name: " << l->name << endl;
//lyxerr << "found key token: " << l->token << endl;
- yylval.l = l;
- yylval.i = l->id;
+ lval_ = l;
+ ival_ = l->id;
return l->token;
}
if (lexcode[c] == LexAlpha) {
- yytext.erase();
- while (lexcode[c] == LexAlpha && yyis->good()) {
- yytext += c;
- c = getuchar(yyis);
+ sval_.erase();
+ while (lexcode[c] == LexAlpha && is_.good()) {
+ sval_ += c;
+ c = getuchar();
}
- while (lexcode[c] == LexSpace && yyis->good())
- c = getuchar(yyis);
+ while (lexcode[c] == LexSpace && is_.good())
+ c = getuchar();
if (lexcode[c] != LexSpace)
- yyis->putback(c);
+ is_.putback(c);
- //lyxerr[Debug::MATHED] << "reading: text '" << yytext << "'\n";
- //lyxerr << "reading: text '" << yytext << "'\n";
- latexkeys const * l = in_word_set(yytext);
+ //lyxerr[Debug::MATHED] << "reading: text '" << sval_ << "'\n";
+ //lyxerr << "reading: text '" << sval_ << "'\n";
+ latexkeys const * l = in_word_set(sval_);
if (!l)
return LM_TK_UNDEF;
int i = 0;
while (i < latex_mathenv_num && name != latex_mathenv[i].name)
++i;
- yylval.i = i;
+ ival_ = i;
} else if (l->token == LM_TK_SPACE)
- yylval.i = l->id;
+ ival_ = l->id;
else
- yylval.l = l;
+ lval_ = l;
return l->token;
}
}
}
-MathScriptInset * prevScriptInset(MathArray const & array)
-{
- MathInset * p = array.back();
- return (p && p->isScriptInset()) ? static_cast<MathScriptInset *>(p) : 0;
-}
-
-
-MathInset * lastScriptInset(MathArray & array, bool up, bool down, int limits)
+void Parser::error(string const & msg)
{
- MathScriptInset * p = prevScriptInset(array);
- if (!p) {
- MathInset * b = array.back();
- if (b && b->isScriptable()) {
- p = new MathScriptInset(up, down, b->clone());
- array.pop_back();
- } else {
- p = new MathScriptInset(up, down);
- }
- array.push_back(p);
- }
- if (up)
- p->up(true);
- if (down)
- p->down(down);
- if (limits)
- p->limits(limits);
- return p;
+ lyxerr << "Line ~" << lineno_ << ": Math parse error: " << msg << endl;
}
-static bool curr_num;
-static string curr_label;
-
-void mathed_parse_lines(MathGridInset * p, int col, bool numbered, bool outmost)
+void Parser::parse_lines(MathGridInset * p, int col, bool numbered, bool outmost)
{
// save global variables
- bool const saved_num = curr_num;
- string const saved_label = curr_label;
+ bool const saved_num = curr_num_;
+ string const saved_label = curr_label_;
for (int row = 0; true; ++row) {
// reset global variables
- curr_num = numbered;
- curr_label.erase();
+ curr_num_ = numbered;
+ curr_label_.erase();
// reading a row
int idx = p->nargs() - p->ncols();
for (int i = 0; i < col - 1; ++i, ++idx)
- mathed_parse_into(p->cell(idx), FLAG_AMPERSAND);
- mathed_parse_into(p->cell(idx), FLAG_NEWLINE | FLAG_END);
+ parse_into(p->cell(idx), FLAG_AMPERSAND);
+ parse_into(p->cell(idx), FLAG_NEWLINE | FLAG_END);
if (outmost) {
MathMatrixInset * m = static_cast<MathMatrixInset *>(p);
- m->numbered(row, curr_num);
- m->label(row, curr_label);
+ m->numbered(row, curr_num_);
+ m->label(row, curr_label_);
}
#ifdef WITH_WARNINGS
#warning Hack!
#endif
// no newline
- if (yylval.i != -1)
+ if (ival_ != -1)
break;
p->appendRow();
}
- // restore global variables
- curr_num = saved_num;
- curr_label = saved_label;
+ // restore "global" variables
+ curr_num_ = saved_num;
+ curr_label_ = saved_label;
}
-MathMacroTemplate * mathed_parse_macro()
+MathMacroTemplate * Parser::parse_macro()
{
if (yylex() != LM_TK_NEWCOMMAND) {
lyxerr << "\\newcommand expected\n";
string arg = lexArg('[');
int narg = arg.empty() ? 0 : atoi(arg.c_str());
MathMacroTemplate * p = new MathMacroTemplate(name, narg);
- mathed_parse_into(p->cell(0), FLAG_BRACE | FLAG_BRACE_LAST);
+ parse_into(p->cell(0), FLAG_BRACE | FLAG_BRACE_LAST);
return p;
}
-MathMatrixInset * mathed_parse_normal()
+MathMatrixInset * Parser::parse_normal()
{
MathMatrixInset * p = 0;
int t = yylex();
switch (t) {
case LM_TK_MATH:
case LM_TK_BEGIN: {
- int i = yylval.i;
+ int i = ival_;
lyxerr[Debug::MATHED]
<< "reading math environment " << i << " "
<< latex_mathenv[i].name << "\n";
switch (typ) {
case LM_OT_SIMPLE: {
- curr_num = latex_mathenv[i].numbered;
- curr_label.erase();
- mathed_parse_into(p->cell(0), 0);
- p->numbered(0, curr_num);
- p->label(0, curr_label);
+ curr_num_ = latex_mathenv[i].numbered;
+ curr_label_.erase();
+ parse_into(p->cell(0), 0);
+ p->numbered(0, curr_num_);
+ p->label(0, curr_label_);
break;
}
case LM_OT_EQUATION: {
- curr_num = latex_mathenv[i].numbered;
- curr_label.erase();
- mathed_parse_into(p->cell(0), FLAG_END);
- p->numbered(0, curr_num);
- p->label(0, curr_label);
+ curr_num_ = latex_mathenv[i].numbered;
+ curr_label_.erase();
+ parse_into(p->cell(0), FLAG_END);
+ p->numbered(0, curr_num_);
+ p->label(0, curr_label_);
break;
}
case LM_OT_EQNARRAY: {
- mathed_parse_lines(p, 3, latex_mathenv[i].numbered, true);
+ parse_lines(p, 3, latex_mathenv[i].numbered, true);
break;
}
case LM_OT_ALIGN: {
p->halign(lexArg('{'));
- mathed_parse_lines(p, 2, latex_mathenv[i].numbered, true);
+ parse_lines(p, 2, latex_mathenv[i].numbered, true);
break;
}
case LM_OT_ALIGNAT: {
p->halign(lexArg('{'));
- mathed_parse_lines(p, 2, latex_mathenv[i].numbered, true);
+ parse_lines(p, 2, latex_mathenv[i].numbered, true);
break;
}
}
-latexkeys const * read_delim()
+latexkeys const * Parser::read_delim()
{
int ld = yylex();
//lyxerr << "found symbol: " << ld << "\n";
case LM_TK_NOGLYPH:
case LM_TK_SPECIAL:
case LM_TK_BEGIN:
- l = yylval.l;
+ l = lval_;
//lyxerr << "found key 1: '" << l << "'\n";
//lyxerr << "found key 1: '" << l->name << "'\n";
break;
case LM_TK_STR:
string s;
- s += yylval.i;
+ s += ival_;
l = in_word_set(s);
//lyxerr << "found key 2: '" << l->name << "'\n";
}
}
-void mathed_parse_into(MathArray & array, unsigned flags)
+void Parser::parse_into(MathArray & array, unsigned flags)
{
static int plevel = -1;
int limits = 0;
while (t) {
- //lyxerr << "t: " << t << " flags: " << flags << " i: " << yylval.i
- // << " '" << yytext << "'\n";
+ //lyxerr << "t: " << t << " flags: " << flags << " i: " << ival_
+ // << " '" << sval_ << "'\n";
//array.dump(lyxerr);
//lyxerr << "\n";
}
if ((flags & FLAG_BRACE) && t != LM_TK_OPEN) {
- mathPrintError(
+ error(
"Expected {. Maybe you forgot to enclose an argument in {}");
panic = true;
break;
switch (t) {
case LM_TK_ALPHA:
- if (!isspace(yylval.i) || yyvarcode == LM_TC_TEXTRM)
- array.push_back(new MathCharInset(yylval.i, yyvarcode));
+ if (!isspace(ival_) || yyvarcode == LM_TC_TEXTRM)
+ array.push_back(new MathCharInset(ival_, yyvarcode));
break;
case LM_TK_ARGUMENT: {
- MathMacroArgument * p = new MathMacroArgument(yylval.i);
+ MathMacroArgument * p = new MathMacroArgument(ival_);
p->code(yyvarcode);
array.push_back(p);
break;
}
case LM_TK_SPECIAL:
- array.push_back(new MathCharInset(yylval.i, LM_TC_SPECIAL));
+ array.push_back(new MathCharInset(ival_, LM_TC_SPECIAL));
break;
case LM_TK_STR:
- array.push_back(new MathCharInset(yylval.i, LM_TC_CONST));
+ array.push_back(new MathCharInset(ival_, LM_TC_CONST));
break;
case LM_TK_OPEN:
case LM_TK_CLOSE:
--brace;
if (brace < 0) {
- mathPrintError("Unmatching braces");
+ error("Unmatching braces");
panic = true;
break;
}
break;
case '^':
- mathed_parse_into(
+ parse_into(
lastScriptInset(array, true, false, limits)->cell(0), FLAG_ITEM);
break;
case '_':
- mathed_parse_into(
+ parse_into(
lastScriptInset(array, false, true, limits)->cell(1), FLAG_ITEM);
break;
case LM_TK_LIMIT:
- limits = yylval.l->id;
+ limits = lval_->id;
//lyxerr << "setting limit to " << limits << "\n";
break;
case LM_TK_NOGLYPH:
case LM_TK_NOGLYPHB:
limits = 0;
- array.push_back(new MathNoglyphInset(yylval.l));
+ array.push_back(new MathNoglyphInset(lval_));
break;
case LM_TK_BIGSYM:
limits = 0;
- array.push_back(new MathBigopInset(yylval.l));
+ array.push_back(new MathBigopInset(lval_));
break;
case LM_TK_FUNCLIM:
limits = 0;
- array.push_back(new MathFuncLimInset(yylval.l));
+ array.push_back(new MathFuncLimInset(lval_));
break;
case LM_TK_SYM:
limits = 0;
- array.push_back(new MathSymbolInset(yylval.l));
+ array.push_back(new MathSymbolInset(lval_));
break;
case LM_TK_BOP:
- array.push_back(new MathCharInset(yylval.i, LM_TC_BOP));
+ array.push_back(new MathCharInset(ival_, LM_TC_BOP));
break;
case LM_TK_SPACE:
- if (yylval.i >= 0)
- array.push_back(new MathSpaceInset(yylval.i));
+ if (ival_ >= 0)
+ array.push_back(new MathSpaceInset(ival_));
break;
case LM_TK_DOTS:
- array.push_back(new MathDotsInset(yylval.l));
+ array.push_back(new MathDotsInset(lval_));
break;
case LM_TK_STACK:
{
MathStackrelInset * p = new MathStackrelInset;
- mathed_parse_into(p->cell(0), FLAG_ITEM);
- mathed_parse_into(p->cell(1), FLAG_ITEM);
+ parse_into(p->cell(0), FLAG_ITEM);
+ parse_into(p->cell(1), FLAG_ITEM);
array.push_back(p);
break;
}
case LM_TK_FRAC:
{
MathFracInset * p = new MathFracInset;
- mathed_parse_into(p->cell(0), FLAG_ITEM);
- mathed_parse_into(p->cell(1), FLAG_ITEM);
+ parse_into(p->cell(0), FLAG_ITEM);
+ parse_into(p->cell(1), FLAG_ITEM);
array.push_back(p);
break;
}
case LM_TK_SQRT:
{
- unsigned char c = getuchar(yyis);
+ unsigned char c = getuchar();
if (c == '[') {
array.push_back(new MathRootInset);
- mathed_parse_into(array.back()->cell(0), FLAG_BRACK_END);
- mathed_parse_into(array.back()->cell(1), FLAG_ITEM);
+ parse_into(array.back()->cell(0), FLAG_BRACK_END);
+ parse_into(array.back()->cell(1), FLAG_ITEM);
} else {
- yyis->putback(c);
+ is_.putback(c);
array.push_back(new MathSqrtInset);
- mathed_parse_into(array.back()->cell(0), FLAG_ITEM);
+ parse_into(array.back()->cell(0), FLAG_ITEM);
}
break;
}
{
latexkeys const * l = read_delim();
MathArray ar;
- mathed_parse_into(ar, FLAG_RIGHT);
+ parse_into(ar, FLAG_RIGHT);
latexkeys const * r = read_delim();
MathDelimInset * dl = new MathDelimInset(l, r);
dl->cell(0) = ar;
--plevel;
return;
}
- mathPrintError("Unmatched right delimiter");
+ error("Unmatched right delimiter");
// panic = true;
break;
case LM_TK_FONT:
- yyvarcode = static_cast<MathTextCodes>(yylval.l->id);
+ yyvarcode = static_cast<MathTextCodes>(lval_->id);
flags |= (FLAG_BRACE | FLAG_BRACE_FONT);
break;
{
lyxerr[Debug::MATHED] << "LM_TK_STY not implemented\n";
//MathArray tmp = array;
- //MathSizeInset * p = new MathSizeInset(MathStyles(yylval.l->id));
+ //MathSizeInset * p = new MathSizeInset(MathStyles(lval_->id));
//array.push_back(p);
- //mathed_parse_into(p->cell(0), FLAG_BRACE_FONT);
+ //parse_into(p->cell(0), FLAG_BRACE_FONT);
break;
}
-
case LM_TK_DECORATION:
{
- MathDecorationInset * p = new MathDecorationInset(yylval.l);
- mathed_parse_into(p->cell(0), FLAG_ITEM);
+ MathDecorationInset * p = new MathDecorationInset(lval_);
+ parse_into(p->cell(0), FLAG_ITEM);
array.push_back(p);
break;
}
case LM_TK_NONUM:
- curr_num = false;
+ curr_num_ = false;
break;
case LM_TK_FUNC:
- array.push_back(new MathSymbolInset(yylval.l));
+ array.push_back(new MathSymbolInset(lval_));
break;
case LM_TK_UNDEF:
- if (MathMacroTable::hasTemplate(yytext)) {
- MathMacro * m = MathMacroTable::cloneTemplate(yytext);
+ if (MathMacroTable::hasTemplate(sval_)) {
+ MathMacro * m = MathMacroTable::cloneTemplate(sval_);
for (int i = 0; i < m->nargs(); ++i)
- mathed_parse_into(m->cell(i), FLAG_ITEM);
+ parse_into(m->cell(i), FLAG_ITEM);
array.push_back(m);
m->metrics(LM_ST_TEXT);
} else
- array.push_back(new MathFuncInset(yytext));
+ array.push_back(new MathFuncInset(sval_));
break;
case LM_TK_MATH:
case LM_TK_BEGIN:
{
- int i = yylval.i;
+ int i = ival_;
MathInsetTypes typ = latex_mathenv[i].typ;
if (typ == LM_OT_MATRIX) {
m->valign(valign[0]);
m->halign(halign);
- mathed_parse_lines(m, halign.size(), latex_mathenv[i].numbered, false);
+ parse_lines(m, halign.size(), latex_mathenv[i].numbered, false);
array.push_back(m);
//lyxerr << "read matrix " << *m << "\n";
break;
}
case LM_TK_MACRO:
- array.push_back(MathMacroTable::cloneTemplate(yylval.l->name));
+ array.push_back(MathMacroTable::cloneTemplate(lval_->name));
break;
case LM_TK_LABEL:
- curr_label = lexArg('{', true);
+ curr_label_ = lexArg('{', true);
break;
default:
- mathPrintError("Unrecognized token");
- lyxerr[Debug::MATHED] << "[" << t << " " << yytext << "]" << endl;
+ error("Unrecognized token");
+ lyxerr[Debug::MATHED] << "[" << t << " " << sval_ << "]" << endl;
break;
} // end of big switch
// Search for the end command.
do {
t = yylex();
- } while (yyis->good() && t != LM_TK_END && t);
+ } while (is_.good() && t != LM_TK_END && t);
} else {
t = yylex();
}
--plevel;
}
-void mathed_parse_end(LyXLex & lex)
+
+void parse_end(LyXLex & lex, int lineno)
{
// Update line number
- lex.setLineNo(yylineno);
+ lex.setLineNo(lineno);
// reading of end_inset
while (lex.isOK()) {
}
}
-}
+} // anonymous namespace
+
MathArray mathed_parse_cell(string const & str)
{
istringstream is(str.c_str());
- yyis = &is;
- yylineno = 0;
+ Parser parser(is);
MathArray ar;
- mathed_parse_into(ar, 0);
+ parser.parse_into(ar, 0);
return ar;
}
MathMacroTemplate * mathed_parse_macro(string const & str)
{
istringstream is(str.c_str());
- return mathed_parse_macro(is);
+ Parser parser(is);
+ return parser.parse_macro();
}
MathMacroTemplate * mathed_parse_macro(istream & is)
{
- yyis = &is;
- yylineno = 0;
- return mathed_parse_macro();
+ Parser parser(is);
+ return parser.parse_macro();
}
MathMacroTemplate * mathed_parse_macro(LyXLex & lex)
{
- yyis = &lex.getStream();
- yylineno = lex.getLineNo();
- MathMacroTemplate * p = mathed_parse_macro();
- mathed_parse_end(lex);
+ Parser parser(lex);
+ MathMacroTemplate * p = parser.parse_macro();
+ parse_end(lex, parser.lineno());
return p;
}
MathMatrixInset * mathed_parse_normal(string const & str)
{
istringstream is(str.c_str());
- return mathed_parse_normal(is);
+ Parser parser(is);
+ return parser.parse_normal();
}
MathMatrixInset * mathed_parse_normal(istream & is)
{
- yyis = &is;
- yylineno = 0;
- return mathed_parse_normal();
+ Parser parser(is);
+ return parser.parse_normal();
}
MathMatrixInset * mathed_parse_normal(LyXLex & lex)
{
- yyis = &lex.getStream();
- yylineno = lex.getLineNo();
- MathMatrixInset * p = mathed_parse_normal();
- mathed_parse_end(lex);
+ Parser parser(lex);
+ MathMatrixInset * p = parser.parse_normal();
+ parse_end(lex, parser.lineno());
return p;
}
projects / features.git / commitdiff