X-Git-Url: https://git.saurik.com/cycript.git/blobdiff_plain/e53322782610fa076081d974ac22712107a2fe0e..c0bc320e4e9af4976a1f0e61e44d58d2e230ca5c:/Cycript.l?ds=sidebyside

diff --git a/Cycript.l b/Cycript.l
index 10be43f..c2142bd 100644
--- a/Cycript.l
+++ b/Cycript.l
@@ -1,5 +1,63 @@
 %{
-#include "Cycript.tab.h"
+#define YYLTYPE cy::location
+#include "Cycript.tab.hh"
+typedef cy::parser::token tk;
+
+#define YY_EXTRA_TYPE CYDriver *
+
+#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"
@@ -9,79 +67,267 @@
 %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
+
+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_}
 
-delim         [ \t]
-whitesp       {delim}+
-digit         [0-9]
-number        [-]?{digit}*[.]?{digit}+
+RegularExpressionEnd_ \/{RegularExpressionFlags}
+RegularExpressionRest_ {RegularExpressionBody_}{RegularExpressionEnd_}
+RegularExpressionStart_ {RegularExpressionBody}{RegularExpressionEnd_}
+
+%x res
+%x rer
 
 %%
 
-"&"    { 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; }
+<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();
+
+        N
+    } else L
+}
+
+"@"    L C return tk::At;
+
+"&"    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::ScannerInit() {
+    cylex_init(&scanner_);
+    cyset_extra(this, scanner_);
+}
+
+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);
+    }
+}