%{
#include "Cycript.tab.hh"
typedef cy::parser::token tk;
-#define YY_EXTRA_TYPE CYParser *
+
+#define YY_EXTRA_TYPE CYDriver *
+#define YYLTYPE cy::location
+
+#define T yylval->newline_ = yyextra->state_ == CYNewLine;
+#define C T yyextra->state_ = CYClear;
+#define R T yyextra->state_ = CYRestricted;
+
+#define N \
+ if (yyextra->state_ != CYNewLine) { \
+ bool restricted(yyextra->state_ == CYRestricted); \
+ if (restricted) { \
+ yyextra->state_ = CYClear; \
+ return tk::NewLine; \
+ } else \
+ yyextra->state_ = CYNewLine; \
+ }
+
+#define L { \
+ yylloc->step(); \
+ yylloc->columns(yyleng); \
+}
+
+int H(char c) {
+ if (c >= '0' && c <= '9')
+ return c - '0';
+ if (c >= 'a' && c <= 'f')
+ return c - 'a' + 10;
+ if (c >= 'A' && c <= 'F')
+ return c - 'A' + 10;
+ return -1;
+}
+
+#define YY_INPUT(data, value, size) { \
+ if (yyextra->size_ == 0) \
+ value = YY_NULL; \
+ else { \
+ size_t copy(std::min(size, yyextra->size_)); \
+ memcpy(data, yyextra->data_, copy); \
+ yyextra->data_ += copy; \
+ yyextra->size_ -= copy; \
+ value = copy; \
+ } \
+}
+
%}
%option prefix="cy"
%option interactive
%option reentrant
-delim [ \t]
-whitesp {delim}+
-digit [0-9]
-number [-]?{digit}*[.]?{digit}+
+Exponent [eE][+-]?[0-9]+
+Escape \\[\\'"bfnrtv]|\\0|\\x[0-9a-fA-F]{2}|\\u[0-9a-fA-F]{4}
%%
-"&" return tk::Ampersand;
-"&&" return tk::AmpersandAmpersand;
-"&=" return tk::AmpersandEqual;
-"^" return tk::Carrot;
-"^=" return tk::CarrotEqual;
-"=" return tk::Equal;
-"==" return tk::EqualEqual;
-"===" return tk::EqualEqualEqual;
-"!" return tk::Exclamation;
-"!=" return tk::ExclamationEqual;
-"!==" return tk::ExclamationEqualEqual;
-"-" return tk::Hyphen;
-"-=" return tk::HyphenEqual;
-"--" return tk::HyphenHyphen;
-"->" return tk::HyphenRight;
-"<" return tk::Left;
-"<=" return tk::LeftEqual;
-"<<" return tk::LeftLeft;
-"<<=" return tk::LeftLeftEqual;
-"%" return tk::Percent;
-"%=" return tk::PercentEqual;
-"." return tk::Period;
-"|" return tk::Pipe;
-"|=" return tk::PipeEqual;
-"||" return tk::PipePipe;
-"+" return tk::Plus;
-"+=" return tk::PlusEqual;
-"++" return tk::PlusPlus;
-">" return tk::Right;
-">=" return tk::RightEqual;
-">>" return tk::RightRight;
-">>=" return tk::RightRightEqual;
-">>>" return tk::RightRightRight;
-">>>=" return tk::RightRightRightEqual;
-"/" return tk::Slash;
-"/=" return tk::SlashEqual;
-"*" return tk::Star;
-"*=" return tk::StarEqual;
-"~" return tk::Tilde;
-
-":" return tk::Colon;
-"," return tk::Comma;
-"?" return tk::Question;
-";" return tk::SemiColon;
-
-"(" return tk::OpenParen;
-")" return tk::CloseParen;
-
-"{" return tk::OpenBrace;
-"}" return tk::CloseBrace;
-
-"[" return tk::OpenBracket;
-"]" return tk::CloseBracket;
-
-"break" return tk::Break;
-"case" return tk::Case;
-"catch" return tk::Catch;
-"continue" return tk::Continue;
-"default" return tk::Default;
-"delete" return tk::Delete;
-"do" return tk::Do;
-"else" return tk::Else;
-"false" return tk::False;
-"finally" return tk::Finally;
-"for" return tk::For;
-"function" return tk::Function;
-"if" return tk::If;
-"in" return tk::In;
-"instanceof" return tk::InstanceOf;
-"new" return tk::New;
-"null" return tk::Null;
-"return" return tk::Return;
-"switch" return tk::Switch;
-"this" return tk::This;
-"throw" return tk::Throw;
-"true" return tk::True;
-"try" return tk::Try;
-"typeof" return tk::TypeOf;
-"var" return tk::Var;
-"void" return tk::Void;
-"while" return tk::While;
-"with" return tk::With;
-
-[a-zA-Z$_][a-zA-Z$_0-9]* return tk::Identifier;
-[0-9]+ return tk::NumericLiteral;
-
-[ \t\n] ;
+\/\/[^\n]* ;
+\/\*(\n|[^\*]|\*[^/])\*\/ if (memchr(yytext, '\n', yyleng) != NULL) N // XXX: supposedly I will be screwed on very very long multi-line comments and need to replace this with a manual lexer. http://websrv.cs.fsu.edu/~engelen/courses/COP5621/Pr2.pdf ; XXX: this rule doesn't work anyway, fucking A :(
+
+"&" L C return tk::Ampersand;
+"&&" L C return tk::AmpersandAmpersand;
+"&=" L C return tk::AmpersandEqual;
+"^" L C return tk::Carrot;
+"^=" L C return tk::CarrotEqual;
+"=" L C return tk::Equal;
+"==" L C return tk::EqualEqual;
+"===" L C return tk::EqualEqualEqual;
+"!" L C return tk::Exclamation;
+"!=" L C return tk::ExclamationEqual;
+"!==" L C return tk::ExclamationEqualEqual;
+"-" L C return tk::Hyphen;
+"-=" L C return tk::HyphenEqual;
+"--" L C return yylval->newline_ ? tk::HyphenHyphen_ : tk::HyphenHyphen;
+"->" L C return tk::HyphenRight;
+"<" L C return tk::Left;
+"<=" L C return tk::LeftEqual;
+"<<" L C return tk::LeftLeft;
+"<<=" L C return tk::LeftLeftEqual;
+"%" L C return tk::Percent;
+"%=" L C return tk::PercentEqual;
+"." L C return tk::Period;
+"|" L C return tk::Pipe;
+"|=" L C return tk::PipeEqual;
+"||" L C return tk::PipePipe;
+"+" L C return tk::Plus;
+"+=" L C return tk::PlusEqual;
+"++" L C return yylval->newline_ ? tk::PlusPlus_ : tk::PlusPlus;
+">" L C return tk::Right;
+">=" L C return tk::RightEqual;
+">>" L C return tk::RightRight;
+">>=" L C return tk::RightRightEqual;
+">>>" L C return tk::RightRightRight;
+">>>=" L C return tk::RightRightRightEqual;
+"/" L C return tk::Slash;
+"/=" L C return tk::SlashEqual;
+"*" L C return tk::Star;
+"*=" L C return tk::StarEqual;
+"~" L C return tk::Tilde;
+
+":" L C return tk::Colon;
+"," L C return tk::Comma;
+"?" L C return tk::Question;
+";" L C return tk::SemiColon;
+
+"(" L C return tk::OpenParen;
+")" L C return tk::CloseParen;
+
+"{" L C return tk::OpenBrace;
+"}" L C return tk::CloseBrace;
+
+"[" L C return tk::OpenBracket;
+"]" L C return tk::CloseBracket;
+
+"@selector" L C return tk::AtSelector;
+
+"break" L R yylval->word_ = new CYWord("break"); return tk::Break;
+"case" L C yylval->word_ = new CYWord("case"); return tk::Case;
+"catch" L C yylval->word_ = new CYWord("catch"); return tk::Catch;
+"continue" L R yylval->word_ = new CYWord("continue"); return tk::Continue;
+"default" L C yylval->word_ = new CYWord("default"); return tk::Default;
+"delete" L C yylval->word_ = new CYWord("delete"); return tk::Delete;
+"do" L C yylval->word_ = new CYWord("do"); return tk::Do;
+"else" L C yylval->word_ = new CYWord("else"); return tk::Else;
+"false" L C yylval->false_ = new CYFalse(); return tk::False;
+"finally" L C yylval->word_ = new CYWord("finally"); return tk::Finally;
+"for" L C yylval->word_ = new CYWord("for"); return tk::For;
+"function" L C yylval->word_ = new CYWord("function"); return tk::Function;
+"if" L C yylval->word_ = new CYWord("if"); return tk::If;
+"in" L C yylval->word_ = new CYWord("in"); return tk::In;
+"instanceof" L C yylval->word_ = new CYWord("instanceof"); return tk::InstanceOf;
+"new" L C yylval->word_ = new CYWord("new"); return tk::New;
+"null" L C yylval->null_ = new CYNull(); return tk::Null;
+"return" L R yylval->word_ = new CYWord("return"); return tk::Return;
+"switch" L C yylval->word_ = new CYWord("switch"); return tk::Switch;
+"this" L C yylval->this_ = new CYThis(); return tk::This;
+"throw" L R yylval->word_ = new CYWord("throw"); return tk::Throw;
+"true" L C yylval->true_ = new CYTrue(); return tk::True;
+"try" L C yylval->word_ = new CYWord("try"); return tk::Try;
+"typeof" L C yylval->word_ = new CYWord("typeof"); return tk::TypeOf;
+"var" L C yylval->word_ = new CYWord("var"); return tk::Var;
+"void" L C yylval->word_ = new CYWord("void"); return tk::Void;
+"while" L C yylval->word_ = new CYWord("while"); return tk::While;
+"with" L C yylval->word_ = new CYWord("with"); return tk::With;
+
+[a-zA-Z$_][a-zA-Z$_0-9]* yylval->identifier_ = new CYIdentifier(apr_pstrmemdup(yyextra->pool_, yytext, yyleng)); L C return tk::Identifier;
+
+(\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?){Exponent}? yylval->number_ = new CYNumber(strtod(yytext, NULL)); L C return tk::NumericLiteral;
+
+0[xX][0-9a-fA-F]+ L C yylval->number_ = new CYNumber(strtoull(yytext + 2, NULL, 16)); return tk::NumericLiteral;
+
+0[bB][0-1]+ L C yylval->number_ = new CYNumber(strtoull(yytext + 2, NULL, 2)); return tk::NumericLiteral;
+
+\"([^"\\\n]|{Escape})*\"|'([^'\\\n]|{Escape})*' L C {
+ char *value(reinterpret_cast<char *>(apr_palloc(yyextra->pool_, yyleng)));
+ char *local(value);
+
+ for (int i(1); i != yyleng - 1; ++i) {
+ char next(yytext[i]);
+
+ if (yytext[i] == '\\')
+ switch (next = yytext[++i]) {
+ case '\\': next = '\\'; break;
+ case '\'': next = '\''; break;
+ case '"': next = '"'; break;
+ case 'b': next = '\b'; break;
+ case 'f': next = '\f'; break;
+ case 'n': next = '\n'; break;
+ case 'r': next = '\r'; break;
+ case 't': next = '\t'; break;
+ case 'v': next = '\v'; break;
+ case '0': next = '\0'; break;
+
+ case 'x':
+ next = H(yytext[i + 1]) << 4 | H(yytext[i + 2]);
+ i += 2;
+ break;
+ }
+
+ *local++ = next;
+ }
+
+ *local = '\0';
+ yylval->string_ = new CYString(value, local - value);
+ return tk::StringLiteral;
+}
+
+\n yylloc->end.lines(); yylloc->step(); N
+
+[ \t] L
+<<EOF>> L yyterminate();
+
+. {
+ CYDriver::Error error;
+ error.location_ = *yylloc;
+ error.message_ = "syntax error, unknown token";
+ yyextra->errors_.push_back(error);
+ yyterminate();
+}
%%
-void CYParser::ScannerInit() {
+void CYDriver::ScannerInit() {
cylex_init(&scanner_);
cyset_extra(this, scanner_);
}
-void CYParser::ScannerDestroy() {
+void CYDriver::ScannerDestroy() {
cylex_destroy(scanner_);
}
projects / cycript.git / blobdiff