More interactivity and @selector start.

[cycript.git] / Cycript.l

diff --git a/Cycript.l b/Cycript.l
index 10be43f1a9af6a725cf2ed2f9b15705ea0fc251e..eb0c692a1d310968c1d74b1a6993bad7dd089746 100644 (file)
--- a/Cycript.l
+++ b/Cycript.l
@@ -1,5 +1,27 @@
 %{
 %{

-#include "Cycript.tab.h"
+#include "Cycript.tab.hh"
+typedef cy::parser::token tk;
+
+#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 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 prefix="cy"


@@ -9,79 +31,122 @@
 %option yylineno
 %option nounput
 %option interactive
 %option yylineno
 %option nounput
 %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 CYTokenAmpersand; }
-"&&"   { return CYTokenAmpersandAmpersand; }
-"&="   { return CYTokenAmpersandEqual; }
-"^"    { return CYTokenCarrot; }
-"^="   { return CYTokenCarrotEqual; }
-"="    { return CYTokenEqual; }
-"=="   { return CYTokenEqualEqual; }
-"==="  { return CYTokenEqualEqualEqual; }
-"!"    { return CYTokenExclamation; }
-"!="   { return CYTokenExclamationEqual; }
-"!=="  { return CYTokenExclamationEqualEqual; }
-"-"    { return CYTokenHyphen; }
-"-="   { return CYTokenHyphenEqual; }
-"--"   { return CYTokenHyphenHyphen; }
-"->"   { return CYTokenHyphenRight; }
-"<"    { return CYTokenLeft; }
-"<="   { return CYTokenLeftEqual; }
-"<<"   { return CYTokenLeftLeft; }
-"<<="  { return CYTokenLeftLeftEqual; }
-"%"    { return CYTokenPercent; }
-"%="   { return CYTokenPercentEqual; }
-"."    { return CYTokenPeriod; }
-"|"    { return CYTokenPipe; }
-"|="   { return CYTokenPipeEqual; }
-"||"   { return CYTokenPipePipe; }
-"+"    { return CYTokenPlus; }
-"+="   { return CYTokenPlusEqual; }
-"++"   { return CYTokenPlusPlus; }
-">"    { return CYTokenRight; }
-">="   { return CYTokenRightEqual; }
-">>"   { return CYTokenRightRight; }
-">>="  { return CYTokenRightRightEqual; }
-">>>"  { return CYTokenRightRightRight; }
-">>>=" { return CYTokenRightRightRightEqual; }
-"/"    { return CYTokenSlash; }
-"/="   { return CYTokenSlashEqual; }
-"*"    { return CYTokenStar; }
-"*="   { return CYTokenStarEqual; }
-"~"    { return CYTokenTilde; }
-
-"break" { return CYTokenBreak; }
-"case" { return CYTokenCase; }
-"catch" { return CYTokenCatch; }
-"continue" { return CYTokenContinue; }
-"default" { return CYTokenDefault; }
-"delete" { return CYTokenDelete; }
-"do" { return CYTokenDo; }
-"else" { return CYTokenElse; }
-"false" { return CYTokenFalse; }
-"finally" { return CYTokenFinally; }
-"for" { return CYTokenFor; }
-"function" { return CYTokenFunction; }
-"if" { return CYTokenIf; }
-"in" { return CYTokenIn; }
-"instanceof" { return CYTokenInstanceOf; }
-"new" { return CYTokenNew; }
-"null" { return CYTokenNull; }
-"return" { return CYTokenReturn; }
-"switch" { return CYTokenSwitch; }
-"this" { return CYTokenThis; }
-"throw" { return CYTokenThrow; }
-"true" { return CYTokenTrue; }
-"try" { return CYTokenTry; }
-"typeof" { return CYTokenTypeOf; }
-"var" { return CYTokenVar; }
-"void" { return CYTokenVoid; }
-"while" { return CYTokenWhile; }
-"with" { return CYTokenWith; }
+\/\/[^\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 :(
+
+"&"    C return tk::Ampersand;
+"&&"   C return tk::AmpersandAmpersand;
+"&="   C return tk::AmpersandEqual;
+"^"    C return tk::Carrot;
+"^="   C return tk::CarrotEqual;
+"="    C return tk::Equal;
+"=="   C return tk::EqualEqual;
+"==="  C return tk::EqualEqualEqual;
+"!"    C return tk::Exclamation;
+"!="   C return tk::ExclamationEqual;
+"!=="  C return tk::ExclamationEqualEqual;
+"-"    C return tk::Hyphen;
+"-="   C return tk::HyphenEqual;
+"--"   C return yylval->newline_ ? tk::HyphenHyphen_ : tk::HyphenHyphen;
+"->"   C return tk::HyphenRight;
+"<"    C return tk::Left;
+"<="   C return tk::LeftEqual;
+"<<"   C return tk::LeftLeft;
+"<<="  C return tk::LeftLeftEqual;
+"%"    C return tk::Percent;
+"%="   C return tk::PercentEqual;
+"."    C return tk::Period;
+"|"    C return tk::Pipe;
+"|="   C return tk::PipeEqual;
+"||"   C return tk::PipePipe;
+"+"    C return tk::Plus;
+"+="   C return tk::PlusEqual;
+"++"   C return yylval->newline_ ? tk::PlusPlus_ : tk::PlusPlus;
+">"    C return tk::Right;
+">="   C return tk::RightEqual;
+">>"   C return tk::RightRight;
+">>="  C return tk::RightRightEqual;
+">>>"  C return tk::RightRightRight;
+">>>=" C return tk::RightRightRightEqual;
+"/"    C return tk::Slash;
+"/="   C return tk::SlashEqual;
+"*"    C return tk::Star;
+"*="   C return tk::StarEqual;
+"~"    C return tk::Tilde;
+
+":"    C return tk::Colon;
+","    C return tk::Comma;
+"?"    C return tk::Question;
+";"    C return tk::SemiColon;
+
+"("    C return tk::OpenParen;
+")"    C return tk::CloseParen;
+
+"{"    C return tk::OpenBrace;
+"}"    C return tk::CloseBrace;
+
+"["    C return tk::OpenBracket;
+"]"    C return tk::CloseBracket;
+
+"@selector"  C return tk::AtSelector;
+
+"break"      R yylval->word_ = new CYWord("break"); return tk::Break;
+"case"       C yylval->word_ = new CYWord("case"); return tk::Case;
+"catch"      C yylval->word_ = new CYWord("catch"); return tk::Catch;
+"continue"   R yylval->word_ = new CYWord("continue"); return tk::Continue;
+"default"    C yylval->word_ = new CYWord("default"); return tk::Default;
+"delete"     C yylval->word_ = new CYWord("delete"); return tk::Delete;
+"do"         C yylval->word_ = new CYWord("do"); return tk::Do;
+"else"       C yylval->word_ = new CYWord("else"); return tk::Else;
+"false"      C yylval->false_ = new CYFalse(); return tk::False;
+"finally"    C yylval->word_ = new CYWord("finally"); return tk::Finally;
+"for"        C yylval->word_ = new CYWord("for"); return tk::For;
+"function"   C yylval->word_ = new CYWord("function"); return tk::Function;
+"if"         C yylval->word_ = new CYWord("if"); return tk::If;
+"in"         C yylval->word_ = new CYWord("in"); return tk::In;
+"instanceof" C yylval->word_ = new CYWord("instanceof"); return tk::InstanceOf;
+"new"        C yylval->word_ = new CYWord("new"); return tk::New;
+"null"       C yylval->null_ = new CYNull(); return tk::Null;
+"return"     R yylval->word_ = new CYWord("return"); return tk::Return;
+"switch"     C yylval->word_ = new CYWord("switch"); return tk::Switch;
+"this"       C yylval->this_ = new CYThis(); return tk::This;
+"throw"      R yylval->word_ = new CYWord("throw"); return tk::Throw;
+"true"       C yylval->true_ = new CYTrue(); return tk::True;
+"try"        C yylval->word_ = new CYWord("try"); return tk::Try;
+"typeof"     C yylval->word_ = new CYWord("typeof"); return tk::TypeOf;
+"var"        C yylval->word_ = new CYWord("var"); return tk::Var;
+"void"       C yylval->word_ = new CYWord("void"); return tk::Void;
+"while"      C yylval->word_ = new CYWord("while"); return tk::While;
+"with"       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)); C return tk::Identifier;
+
+(\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?){Exponent}? yylval->number_ = new CYNumber(strtod(yytext, NULL)); C return tk::NumericLiteral;
+
+0[xX][0-9a-fA-F]+ C yylval->number_ = new CYNumber(strtoull(yytext + 2, NULL, 16)); return tk::NumericLiteral;
+
+0[bB][0-1]+ C yylval->number_ = new CYNumber(strtoull(yytext + 2, NULL, 2)); return tk::NumericLiteral;
+
+\"([^"\\\n]|{Escape})*\" C return tk::StringLiteral;
+'([^'\\\n]|{Escape})*' C return tk::StringLiteral;
+
+\n N
+[ \t] ;
+
+%%
+
+void CYDriver::ScannerInit() {
+    cylex_init(&scanner_);
+    cyset_extra(this, scanner_);
+}
+
+void CYDriver::ScannerDestroy() {
+    cylex_destroy(scanner_);
+}