X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/63b4c5a87f72580a85b2555c251490c1eb30021a..272c3da334ce4d6925eb6520a275cd6e503852e7:/Cycript.l

diff --git a/Cycript.l b/Cycript.l
index 2467b96..43c9285 100644
--- a/Cycript.l
+++ b/Cycript.l
@@ -1,6 +1,51 @@
 %{
 #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 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"
@@ -10,96 +55,197 @@ typedef cy::parser::token tk;
 %option yylineno
 %option nounput
 %option interactive
+%option reentrant
+
+Exponent [eE][+-]?[0-9]+
+Escape   \\[\\'"bfnrtv]|\\0|\\x[0-9a-fA-F]{2}|\\u[0-9a-fA-F]{4}
+
+%%
+
+\/\/[^\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;
 
-delim         [ \t]
-whitesp       {delim}+
-digit         [0-9]
-number        [-]?{digit}*[.]?{digit}+
+"@class"       L C return tk::AtClass;
+"@end"         L C return tk::AtEnd;
+"@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;
+
+"abstract"     L C yylval->word_ = new CYWord("abstract"); return tk::Abstract;
+"boolean"      L C yylval->word_ = new CYWord("boolean"); return tk::Boolean;
+"byte"         L C yylval->word_ = new CYWord("byte"); return tk::Byte;
+"char"         L C yylval->word_ = new CYWord("char"); return tk::Char;
+"class"        L C yylval->word_ = new CYWord("class"); return tk::Class;
+"const"        L C yylval->word_ = new CYWord("const"); return tk::Const;
+"debugger"     L C yylval->word_ = new CYWord("debugger"); return tk::Debugger;
+"double"       L C yylval->word_ = new CYWord("double"); return tk::Double;
+"enum"         L C yylval->word_ = new CYWord("enum"); return tk::Enum;
+"export"       L C yylval->word_ = new CYWord("export"); return tk::Export;
+"extends"      L C yylval->word_ = new CYWord("extends"); return tk::Extends;
+"final"        L C yylval->word_ = new CYWord("final"); return tk::Final;
+"float"        L C yylval->word_ = new CYWord("float"); return tk::Float;
+"goto"         L C yylval->word_ = new CYWord("goto"); return tk::Goto;
+"implements"   L C yylval->word_ = new CYWord("implements"); return tk::Implements;
+"import"       L C yylval->word_ = new CYWord("import"); return tk::Import;
+"int"          L C yylval->word_ = new CYWord("int"); return tk::Int;
+"interface"    L C yylval->word_ = new CYWord("interface"); return tk::Interface;
+"long"         L C yylval->word_ = new CYWord("long"); return tk::Long;
+"native"       L C yylval->word_ = new CYWord("native"); return tk::Native;
+"package"      L C yylval->word_ = new CYWord("package"); return tk::Package;
+"private"      L C yylval->word_ = new CYWord("private"); return tk::Private;
+"protected"    L C yylval->word_ = new CYWord("protected"); return tk::Protected;
+"public"       L C yylval->word_ = new CYWord("public"); return tk::Public;
+"short"        L C yylval->word_ = new CYWord("short"); return tk::Short;
+"static"       L C yylval->word_ = new CYWord("static"); return tk::Static;
+"super"        L C yylval->word_ = new CYWord("super"); return tk::Super;
+"synchronized" L C yylval->word_ = new CYWord("synchronized"); return tk::Synchronized;
+"throws"       L C yylval->word_ = new CYWord("throws"); return tk::Throws;
+"transient"    L C yylval->word_ = new CYWord("transient"); return tk::Transient;
+"volatile"     L C yylval->word_ = new CYWord("volatile"); return tk::Volatile;
+
+[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();
+}
 
 %%
 
-"&"    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]                  ;
+void CYDriver::ScannerInit() {
+    cylex_init(&scanner_);
+    cyset_extra(this, scanner_);
+}
+
+void CYDriver::ScannerDestroy() {
+    cylex_destroy(scanner_);
+}