%{
+#define YYLTYPE cy::location
#include "Cycript.tab.hh"
typedef cy::parser::token tk;
+
#define YY_EXTRA_TYPE CYDriver *
-#define N yylval->newline_ = yyextra->newline_; yyextra->newline_ = false; yyextra->restricted_ = false;
-#define R yyextra->restricted_ = true;
-#define L { bool restricted(yyextra->restricted_); yyextra->restricted_ = false; if (restricted) return tk::NewLine; else yyextra->newline_ = true; }
+
+#define T yylval->newline_ = yyextra->state_ == CYNewLine;
+#define C T yyextra->state_ = CYClear;
+#define R T yyextra->state_ = CYRestricted;
+
+#define E(prefix) L C BEGIN(INITIAL); { \
+ char *value(reinterpret_cast<char *>(apr_palloc(yyextra->pool_, yyleng + sizeof(prefix)))); \
+ memcpy(value, prefix, sizeof(prefix) - 1); \
+ memcpy(value + sizeof(prefix) - 1, yytext, yyleng); \
+ value[yyleng + sizeof(prefix) - 1] = '\0'; \
+ yylval->literal_ = new(yyextra->pool_) CYRegEx(value); \
+ return tk::RegularExpressionLiteral; \
+}
+
+#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->file_ != NULL) { \
+ size_t copy(fread(data, 1, size, yyextra->file_)); \
+ value = copy == 0 ? YY_NULL : copy; \
+ } else 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 reentrant
Exponent [eE][+-]?[0-9]+
-Escape \\['"\\bfnrtv]|\\0|\\x[0-9a-fA-F]{2}|\\u[0-9a-fA-F]{4}
+Escape \\[\\'"bfnrtv]|\\0|\\x[0-9a-fA-F]{2}|\\u[0-9a-fA-F]{4}|\\\n
+
+IdentifierStart [a-zA-Z$_]
+IdentifierPart [a-zA-Z$_0-9]
+
+NonTerminator [^\n]
+BackslashSequence \\{NonTerminator}
+RegularExpressionFirstChar [^\n*\\/]|{BackslashSequence}
+RegularExpressionChar [^\n\\/]|{BackslashSequence}
+RegularExpressionFlags {IdentifierPart}*
+RegularExpressionChars {RegularExpressionChar}*
+RegularExpressionBody_ {RegularExpressionChars}
+RegularExpressionBody {RegularExpressionFirstChar}{RegularExpressionBody_}
+
+RegularExpressionEnd_ \/{RegularExpressionFlags}
+RegularExpressionRest_ {RegularExpressionBody_}{RegularExpressionEnd_}
+RegularExpressionStart_ {RegularExpressionBody}{RegularExpressionEnd_}
+
+%x res
+%x rer
%%
-\/\/[^\n]* ;
-\/\*(\n|[^\*]|\*[^/])\*\/ if (memchr(yytext, '\n', yyleng) != NULL) L // 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 :(
-
-"&" N return tk::Ampersand;
-"&&" N return tk::AmpersandAmpersand;
-"&=" N return tk::AmpersandEqual;
-"^" N return tk::Carrot;
-"^=" N return tk::CarrotEqual;
-"=" N return tk::Equal;
-"==" N return tk::EqualEqual;
-"===" N return tk::EqualEqualEqual;
-"!" N return tk::Exclamation;
-"!=" N return tk::ExclamationEqual;
-"!==" N return tk::ExclamationEqualEqual;
-"-" N return tk::Hyphen;
-"-=" N return tk::HyphenEqual;
-"--" N return yylval->newline_ ? tk::HyphenHyphen_ : tk::HyphenHyphen;
-"->" N return tk::HyphenRight;
-"<" N return tk::Left;
-"<=" N return tk::LeftEqual;
-"<<" N return tk::LeftLeft;
-"<<=" N return tk::LeftLeftEqual;
-"%" N return tk::Percent;
-"%=" N return tk::PercentEqual;
-"." N return tk::Period;
-"|" N return tk::Pipe;
-"|=" N return tk::PipeEqual;
-"||" N return tk::PipePipe;
-"+" N return tk::Plus;
-"+=" N return tk::PlusEqual;
-"++" N return yylval->newline_ ? tk::PlusPlus_ : tk::PlusPlus;
-">" N return tk::Right;
-">=" N return tk::RightEqual;
-">>" N return tk::RightRight;
-">>=" N return tk::RightRightEqual;
-">>>" N return tk::RightRightRight;
-">>>=" N return tk::RightRightRightEqual;
-"/" N return tk::Slash;
-"/=" N return tk::SlashEqual;
-"*" N return tk::Star;
-"*=" N return tk::StarEqual;
-"~" N return tk::Tilde;
-
-":" N return tk::Colon;
-"," N return tk::Comma;
-"?" N return tk::Question;
-";" N return tk::SemiColon;
-
-"(" N return tk::OpenParen;
-")" N return tk::CloseParen;
-
-"{" N return tk::OpenBrace;
-"}" N return tk::CloseBrace;
-
-"[" N return tk::OpenBracket;
-"]" N return tk::CloseBracket;
-
-"break" N R yylval->word_ = new CYWord("break"); return tk::Break;
-"case" N yylval->word_ = new CYWord("case"); return tk::Case;
-"catch" N yylval->word_ = new CYWord("catch"); return tk::Catch;
-"continue" N R yylval->word_ = new CYWord("continue"); return tk::Continue;
-"default" N yylval->word_ = new CYWord("default"); return tk::Default;
-"delete" N yylval->word_ = new CYWord("delete"); return tk::Delete;
-"do" N yylval->word_ = new CYWord("do"); return tk::Do;
-"else" N yylval->word_ = new CYWord("else"); return tk::Else;
-"false" N yylval->false_ = new CYFalse(); return tk::False;
-"finally" N yylval->word_ = new CYWord("finally"); return tk::Finally;
-"for" N yylval->word_ = new CYWord("for"); return tk::For;
-"function" N yylval->word_ = new CYWord("function"); return tk::Function;
-"if" N yylval->word_ = new CYWord("if"); return tk::If;
-"in" N yylval->word_ = new CYWord("in"); return tk::In;
-"instanceof" N yylval->word_ = new CYWord("instanceof"); return tk::InstanceOf;
-"new" N yylval->word_ = new CYWord("new"); return tk::New;
-"null" N yylval->null_ = new CYNull(); return tk::Null;
-"return" N R yylval->word_ = new CYWord("return"); return tk::Return;
-"switch" N yylval->word_ = new CYWord("switch"); return tk::Switch;
-"this" N yylval->this_ = new CYThis(); return tk::This;
-"throw" N R yylval->word_ = new CYWord("throw"); return tk::Throw;
-"true" N yylval->true_ = new CYTrue(); return tk::True;
-"try" N yylval->word_ = new CYWord("try"); return tk::Try;
-"typeof" N yylval->word_ = new CYWord("typeof"); return tk::TypeOf;
-"var" N yylval->word_ = new CYWord("var"); return tk::Var;
-"void" N yylval->word_ = new CYWord("void"); return tk::Void;
-"while" N yylval->word_ = new CYWord("while"); return tk::While;
-"with" N 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)); N return tk::Identifier;
-
-(\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?){Exponent}? yylval->number_ = new CYNumber(strtod(yytext, NULL)); N return tk::NumericLiteral;
-
-0[xX][0-9a-fA-F]+ N yylval->number_ = new CYNumber(strtoull(yytext + 2, NULL, 16)); return tk::NumericLiteral;
-
-0[bB][0-1]+ N yylval->number_ = new CYNumber(strtoull(yytext + 2, NULL, 2)); return tk::NumericLiteral;
-
-\"([^"\\\n]|{Escape})*\" N return tk::StringLiteral;
-'([^'\\\n]|{Escape})*' N return tk::StringLiteral;
-
-\n L
-[ \t] ;
+<res>{RegularExpressionStart_} E("/")
+<rer>{RegularExpressionRest_} E("/=")
+
+\/\/[^\n]* L
+
+\/\*(\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
+
+ if (const char *nl = reinterpret_cast<const char *>(memchr(yytext, '\n', yyleng))) {
+ unsigned lines(0);
+ size_t left;
+
+ do {
+ ++lines;
+ left = yyleng - (nl - yytext) - 1;
+ nl = reinterpret_cast<const char *>(memchr(nl + 1, '\n', left));
+ } while (nl != NULL);
+
+ yylloc->end.lines(lines);
+ yylloc->end.columns(left);
+ yylloc->step();
+ } else L
+}
+
+"&" 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;
+
+"@class" L C return tk::AtClass;
+"@end" L C return tk::AtEnd;
+"@selector" L C return tk::AtSelector;
+
+"false" L C yylval->false_ = new(yyextra->pool_) CYFalse(); return tk::False;
+"null" L C yylval->null_ = new(yyextra->pool_) CYNull(); return tk::Null;
+"true" L C yylval->true_ = new(yyextra->pool_) CYTrue(); return tk::True;
+
+"break" L R yylval->word_ = new(yyextra->pool_) CYWord("break"); return tk::Break;
+"case" L C yylval->word_ = new(yyextra->pool_) CYWord("case"); return tk::Case;
+"catch" L C yylval->word_ = new(yyextra->pool_) CYWord("catch"); return tk::Catch;
+"continue" L R yylval->word_ = new(yyextra->pool_) CYWord("continue"); return tk::Continue;
+"default" L C yylval->word_ = new(yyextra->pool_) CYWord("default"); return tk::Default;
+"delete" L C yylval->word_ = new(yyextra->pool_) CYWord("delete"); return tk::Delete;
+"do" L C yylval->word_ = new(yyextra->pool_) CYWord("do"); return tk::Do;
+"else" L C yylval->word_ = new(yyextra->pool_) CYWord("else"); return tk::Else;
+"finally" L C yylval->word_ = new(yyextra->pool_) CYWord("finally"); return tk::Finally;
+"for" L C yylval->word_ = new(yyextra->pool_) CYWord("for"); return tk::For;
+"function" L C yylval->word_ = new(yyextra->pool_) CYWord("function"); return tk::Function;
+"if" L C yylval->word_ = new(yyextra->pool_) CYWord("if"); return tk::If;
+"in" L C yylval->word_ = new(yyextra->pool_) CYWord("in"); return tk::In;
+"instanceof" L C yylval->word_ = new(yyextra->pool_) CYWord("instanceof"); return tk::InstanceOf;
+"new" L C yylval->word_ = new(yyextra->pool_) CYWord("new"); return tk::New;
+"return" L R yylval->word_ = new(yyextra->pool_) CYWord("return"); return tk::Return;
+"switch" L C yylval->word_ = new(yyextra->pool_) CYWord("switch"); return tk::Switch;
+"this" L C yylval->this_ = new(yyextra->pool_) CYThis(); return tk::This;
+"throw" L R yylval->word_ = new(yyextra->pool_) CYWord("throw"); return tk::Throw;
+"try" L C yylval->word_ = new(yyextra->pool_) CYWord("try"); return tk::Try;
+"typeof" L C yylval->word_ = new(yyextra->pool_) CYWord("typeof"); return tk::TypeOf;
+"var" L C yylval->word_ = new(yyextra->pool_) CYWord("var"); return tk::Var;
+"void" L C yylval->word_ = new(yyextra->pool_) CYWord("void"); return tk::Void;
+"while" L C yylval->word_ = new(yyextra->pool_) CYWord("while"); return tk::While;
+"with" L C yylval->word_ = new(yyextra->pool_) CYWord("with"); return tk::With;
+
+"debugger" L C yylval->word_ = new(yyextra->pool_) CYWord("debugger"); return tk::Debugger;
+
+"const" L C yylval->word_ = new(yyextra->pool_) CYWord("const"); return tk::Const;
+
+"class" L C yylval->word_ = new(yyextra->pool_) CYWord("class"); return tk::Class;
+"enum" L C yylval->word_ = new(yyextra->pool_) CYWord("enum"); return tk::Enum;
+"export" L C yylval->word_ = new(yyextra->pool_) CYWord("export"); return tk::Export;
+"extends" L C yylval->word_ = new(yyextra->pool_) CYWord("extends"); return tk::Extends;
+"import" L C yylval->word_ = new(yyextra->pool_) CYWord("import"); return tk::Import;
+"super" L C yylval->word_ = new(yyextra->pool_) CYWord("super"); return tk::Super;
+
+"implements" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("implements"); return tk::Implements;
+"interface" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("interface"); return tk::Interface;
+"package" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("package"); return tk::Package;
+"private" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("private"); return tk::Private;
+"protected" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("protected"); return tk::Protected;
+"public" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("public"); return tk::Public;
+"static" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("static"); return tk::Static;
+
+"abstract" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("abstract"); return tk::Abstract;
+"boolean" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("boolean"); return tk::Boolean;
+"byte" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("byte"); return tk::Byte;
+"char" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("char"); return tk::Char;
+"double" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("double"); return tk::Double;
+"final" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("final"); return tk::Final;
+"float" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("float"); return tk::Float;
+"goto" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("goto"); return tk::Goto;
+"int" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("int"); return tk::Int;
+"long" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("long"); return tk::Long;
+"native" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("native"); return tk::Native;
+"short" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("short"); return tk::Short;
+"synchronized" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("synchronized"); return tk::Synchronized;
+"throws" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("throws"); return tk::Throws;
+"transient" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("transient"); return tk::Transient;
+"volatile" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("volatile"); return tk::Volatile;
+
+"let" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("let"); return tk::Let;
+"yield" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("yield"); return tk::Yield;
+
+"each" L C yylval->identifier_ = new(yyextra->pool_) CYIdentifier("each"); return tk::Each;
+
+{IdentifierStart}{IdentifierPart}* yylval->identifier_ = new(yyextra->pool_) 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(yyextra->pool_) CYNumber(strtod(yytext, NULL)); L C return tk::NumericLiteral;
+
+0[xX][0-9a-fA-F]+ L C yylval->number_ = new(yyextra->pool_) CYNumber(strtoull(yytext + 2, NULL, 16)); return tk::NumericLiteral;
+
+0[bB][0-1]+ L C yylval->number_ = new(yyextra->pool_) 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 '\n': continue;
+ 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(yyextra->pool_) CYString(value, local - value);
+ return tk::StringLiteral;
+}
+
+\r?\n yylloc->end.lines(); yylloc->step(); N
+
+[ \t] L
+<<EOF>> L yyterminate();
+
+. L {
+ CYDriver::Error error;
+ error.location_ = *yylloc;
+ error.message_ = "syntax error, unknown token";
+ yyextra->errors_.push_back(error);
+ yyterminate();
+}
%%
void CYDriver::ScannerDestroy() {
cylex_destroy(scanner_);
}
+
+void CYDriver::SetCondition(Condition condition) {
+ struct yyguts_t *yyg(reinterpret_cast<struct yyguts_t *>(scanner_));
+
+ switch (condition) {
+ case RegExStart:
+ BEGIN(res);
+ break;
+ case RegExRest:
+ BEGIN(rer);
+ break;
+ default:
+ _assert(false);
+ }
+}
projects / cycript.git / blobdiff