[cycript.git] / Cycript.l.in

/* Cycript - Optimizing JavaScript Compiler/Runtime
 * Copyright (C) 2009-2012  Jay Freeman (saurik)
*/

/* GNU Lesser General Public License, Version 3 {{{ */
/*
 * Cycript is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * Cycript is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
**/
/* }}} */

/* XXX: supposedly I will be screwed on very very long multi-line comments and need to replace these with a manual lexer. http://websrv.cs.fsu.edu/~engelen/courses/COP5621/Pr2.pdf */

%{
#define YYLTYPE cy::location
#include "Cycript.tab.hh"
typedef cy::parser::token tk;

#include "Highlight.hpp"

#define YY_EXTRA_TYPE CYDriver *

// do /not/ fold token to the return: this is a macro and the ordering is dependent
#define F(value, highlight) do { \
    int token(value); \
    yyextra->no_.AtImplementation = false; \
    yyextra->no_.Function = false; \
    yyextra->no_.OpenBrace = false; \
    yylval->highlight_ = highlight; \
    return token; \
} while (false)

#define A new($pool)
#define Y apr_pstrmemdup($pool, yytext, yyleng)

#define I(type, Type, value, highlight) do { \
    yylval->type ## _ = A CY ## Type; \
    F(value, highlight); \
} while (false)

#define T yylval->newline_ = yyextra->state_ == CYNewLine; BEGIN(Div);
#define C T yyextra->state_ = CYClear;
#define R T yyextra->state_ = CYRestricted;

#define N \
    if (yyextra->state_ != CYNewLine) { \
        if (yyextra->state_ != CYRestricted) \
            yyextra->state_ = CYNewLine; \
        else { \
            yyextra->state_ = CYClear; \
            F(tk::NewLine, hi::Nothing); \
        } \
    }

#define V(more) { \
    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(); \
        more \
    } else L \
}

#define L { \
    yylloc->step(); \
    yylloc->columns(yyleng); \
}

#define M { \
    if (yyextra->commented_) { \
        I(comment, Comment(Y), tk::Comment, hi::Comment); \
    } \
}

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->data_.eof()) \
        value = YY_NULL; \
    else { \
        yyextra->data_.read(data, size); \
        size_t copy(yyextra->data_.gcount()); \
        value = copy == 0 ? YY_NULL : copy; \
    } \
}

%}

%option prefix="cy"
%option bison-bridge
%option bison-locations
%option noyywrap
%option yylineno
%option nounput
%option interactive
%option reentrant
%option stack

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 {RegularExpressionFirstChar}{RegularExpressionChars}

@begin E4X
XMLNameStart [a-zA-Z_:]
XMLNamePart [a-zA-Z0-9.-_:]
XMLName {XMLNameStart}{XMLNamePart}*
@end

%s Div
%s RegExp

@begin E4X
%x XMLContent
%x XMLTag
@end

%%

<RegExp>\/{RegularExpressionBody}\/{RegularExpressionFlags} L C I(literal, RegEx(Y), tk::RegularExpressionLiteral, hi::Constant);

\/\/[^\n]* L M

	/* http://ostermiller.org/findcomment.html */
	/* XXX: unify these two rules using !? */
\/\*!([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\/ V() C I(comment, Comment(Y), tk::Comment, hi::Comment);
\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\/ V(N) M

@begin E4X
<RegExp>"<>"      L F(tk::LeftRight, hi::Structure);
<XMLContent>"</>" L F(tk::LeftSlashRight, hi::Structure);

<RegExp,XMLContent>\<!\[CDATA\[(\n|[^[]|\[[^[]|\[\[[^>])*]]> V() F(tk::XMLCDATA, hi::Constant);
<RegExp,XMLContent>\<!--(\n|[^-]|-[^-])*--> V() F(tk::XMLComment, hi::Comment);
<RegExp,XMLContent>\<?(\n|[^?]|\?[^>])*?> V() F(tk::XMLPI, hi::Meta);

<XMLTag>"="  L F(tk::Equal, hi::Structure);
<XMLTag>">"  L F(tk::Right, hi::Structure);
<XMLTag>"/>" L F(tk::SlashRight, hi::Structure);
<XMLTag>"{"  L F(tk::OpenBrace, hi::Structure);

<XMLTag>\"(\n|[^"])*\"|'(\n|[^'])*' V() F(tk::XMLAttributeValue, hi::Constant);
<XMLTag>{XMLName} L F(tk::XMLName, hi::Identifier);
<XMLTag>[ \t\r\n] V() F(tk::XMLWhitespace, hi::Nothing);

<XMLContent>"{"  L F(tk::OpenBrace, hi::Structure);
<XMLContent>"<"  L F(tk::Left, hi::Structure);
<XMLContent>"</" L F(tk::LeftSlash, hi::Structure);
@end

"..."  L C F(tk::PeriodPeriodPeriod, hi::Meta);

@begin E4X
"::"   L C F(tk::ColonColon, hi::Operator);
".."   L C F(tk::PeriodPeriod, hi::Operator);
@end

@begin E4X ObjectiveC
"@"    L C F(tk::At, hi::Operator);
@end

"&"    L C F(tk::Ampersand, hi::Operator);
"&&"   L C F(tk::AmpersandAmpersand, hi::Operator);
"&="   L C F(tk::AmpersandEqual, hi::Operator);
"^"    L C F(tk::Carrot, hi::Operator);
"^="   L C F(tk::CarrotEqual, hi::Operator);
"="    L C F(tk::Equal, hi::Operator);
"=="   L C F(tk::EqualEqual, hi::Operator);
"==="  L C F(tk::EqualEqualEqual, hi::Operator);
"=>"   L C F(tk::EqualRight, hi::Operator);
"!"    L C F(tk::Exclamation, hi::Operator);
"!="   L C F(tk::ExclamationEqual, hi::Operator);
"!=="  L C F(tk::ExclamationEqualEqual, hi::Operator);
"-"    L C F(tk::Hyphen, hi::Operator);
"-="   L C F(tk::HyphenEqual, hi::Operator);
"--"   L C F(yylval->newline_ ? tk::HyphenHyphen_ : tk::HyphenHyphen, hi::Operator);
"->"   L C F(tk::HyphenRight, hi::Operator);
"<"    L C F(tk::Left, hi::Operator);
"<="   L C F(tk::LeftEqual, hi::Operator);
"<<"   L C F(tk::LeftLeft, hi::Operator);
"<<="  L C F(tk::LeftLeftEqual, hi::Operator);
"%"    L C F(tk::Percent, hi::Operator);
"%="   L C F(tk::PercentEqual, hi::Operator);
"."    L C F(tk::Period, hi::Operator);
"|"    L C F(tk::Pipe, hi::Operator);
"|="   L C F(tk::PipeEqual, hi::Operator);
"||"   L C F(tk::PipePipe, hi::Operator);
"+"    L C F(tk::Plus, hi::Operator);
"+="   L C F(tk::PlusEqual, hi::Operator);
"++"   L C F(yylval->newline_ ? tk::PlusPlus_ : tk::PlusPlus, hi::Operator);
">"    L C F(tk::Right, hi::Operator);
">="   L C F(tk::RightEqual, hi::Operator);
">>"   L C F(tk::RightRight, hi::Operator);
">>="  L C F(tk::RightRightEqual, hi::Operator);
">>>"  L C F(tk::RightRightRight, hi::Operator);
">>>=" L C F(tk::RightRightRightEqual, hi::Operator);
"*"    L C F(tk::Star, hi::Operator);
"*="   L C F(tk::StarEqual, hi::Operator);
"~"    L C F(tk::Tilde, hi::Operator);

<Div>"/"  L C F(tk::Slash, hi::Operator);
<Div>"/=" L C F(tk::SlashEqual, hi::Operator);

":"    L C F(tk::Colon, hi::Structure);
","    L C F(tk::Comma, hi::Structure);
"?"    L C F(tk::Question, hi::Structure);
";"    L C F(tk::SemiColon, hi::Structure);

"("    L C F(tk::OpenParen, hi::Structure);
")"    L C F(tk::CloseParen, hi::Structure);

"{"    L C F(yyextra->no_.OpenBrace ? tk::OpenBrace__ : yylval->newline_ ? tk::OpenBrace_ : tk::OpenBrace, hi::Structure);
"}"    L C F(tk::CloseBrace, hi::Structure);

"["    L C F(tk::OpenBracket, hi::Structure);
"]"    L C F(tk::CloseBracket, hi::Structure);

@begin Java
"@class"          L C F(tk::AtClass, hi::Meta);
@end

@begin ObjectiveC
"@end"            L C F(tk::AtEnd, hi::Meta);
"@implementation" L C F(yyextra->no_.AtImplementation ? tk::AtImplementation_ : tk::AtImplementation, hi::Meta);
"@import"         L C F(tk::AtImport, hi::Meta);
"@selector"       L C F(tk::AtSelector, hi::Meta);

"NULL"         L C I(identifier, Identifier("NULL"), tk::Identifier_, hi::Constant);
"nil"          L C I(identifier, Identifier("nil"), tk::Identifier_, hi::Constant);
"YES"          L C I(identifier, Identifier("YES"), tk::Identifier_, hi::Constant);
"NO"           L C I(identifier, Identifier("NO"), tk::Identifier_, hi::Constant);
@end

"undefined"    L C I(identifier, Identifier("undefined"), tk::Identifier_, hi::Operator);

"false"        L C I(false, False(), tk::False, hi::Constant);
"null"         L C I(null, Null(), tk::Null, hi::Constant);
"true"         L C I(true, True(), tk::True, hi::Constant);

"auto"         L C I(word, Word("auto"), tk::Auto, hi::Meta);
"break"        L R I(word, Word("break"), tk::Break, hi::Control);
"case"         L C I(word, Word("case"), tk::Case, hi::Control);
"catch"        L C I(word, Word("catch"), tk::Catch, hi::Control);
"continue"     L R I(word, Word("continue"), tk::Continue, hi::Control);
"default"      L C I(word, Word("default"), tk::Default, hi::Control);
"delete"       L C I(word, Word("delete"), tk::Delete, hi::Operator);
"do"           L C I(word, Word("do"), tk::Do, hi::Control);
"else"         L C I(word, Word("else"), tk::Else, hi::Control);
"finally"      L C I(word, Word("finally"), tk::Finally, hi::Control);
"for"          L C I(word, Word("for"), tk::For, hi::Control);
"function"     L C I(word, Word("function"), yyextra->no_.Function ? tk::Function_ : tk::Function, hi::Meta);
"if"           L C I(word, Word("if"), tk::If, hi::Control);
"in"           L C I(word, Word("in"), yyextra->in_.top() ? tk::In_ : tk::In, hi::Operator);
"instanceof"   L C I(word, Word("instanceof"), tk::InstanceOf, hi::Operator);
"new"          L C I(word, Word("new"), tk::New, hi::Operator);
"return"       L R I(word, Word("return"), tk::Return, hi::Control);
"switch"       L C I(word, Word("switch"), tk::Switch, hi::Control);
"this"         L C I(this, This(), tk::This, hi::Constant);
"throw"        L R I(word, Word("throw"), tk::Throw, hi::Control);
"try"          L C I(word, Word("try"), tk::Try, hi::Control);
"typeof"       L C I(word, Word("typeof"), tk::TypeOf, hi::Operator);
"var"          L C I(word, Word("var"), tk::Var, hi::Meta);
"void"         L C I(word, Word("void"), tk::Void, hi::Operator);
"while"        L C I(word, Word("while"), tk::While, hi::Control);
"with"         L C I(word, Word("with"), tk::With, hi::Control);

"debugger"     L C I(word, Word("debugger"), tk::Debugger, hi::Meta);

"const"        L C I(word, Word("const"), tk::Const, hi::Meta);

"class"        L C I(word, Word("class"), tk::Class, hi::Meta);
"enum"         L C I(word, Word("enum"), tk::Enum, hi::Meta);
"export"       L C I(word, Word("export"), tk::Export, hi::Meta);
"extends"      L C I(word, Word("extends"), tk::Extends, hi::Meta);
"import"       L C I(word, Word("import"), tk::Import, hi::Meta);
"super"        L C I(word, Word("super"), tk::Super, hi::Constant);

"implements"   L C I(identifier, Identifier("implements"), tk::Implements, hi::Meta);
"interface"    L C I(identifier, Identifier("interface"), tk::Interface, hi::Meta);
"package"      L C I(identifier, Identifier("package"), tk::Package, hi::Meta);
"private"      L C I(identifier, Identifier("private"), tk::Private, hi::Meta);
"protected"    L C I(identifier, Identifier("protected"), tk::Protected, hi::Meta);
"public"       L C I(identifier, Identifier("public"), tk::Public, hi::Meta);
"static"       L C I(identifier, Identifier("static"), tk::Static, hi::Meta);

"abstract"     L C I(identifier, Identifier("abstract"), tk::Abstract, hi::Meta);
"boolean"      L C I(identifier, Identifier("boolean"), tk::Boolean, hi::Type);
"byte"         L C I(identifier, Identifier("byte"), tk::Byte, hi::Type);
"char"         L C I(identifier, Identifier("char"), tk::Char, hi::Type);
"double"       L C I(identifier, Identifier("double"), tk::Double, hi::Type);
"final"        L C I(identifier, Identifier("final"), tk::Final, hi::Meta);
"float"        L C I(identifier, Identifier("float"), tk::Float, hi::Type);
"goto"         L C I(identifier, Identifier("goto"), tk::Goto, hi::Control);
"int"          L C I(identifier, Identifier("int"), tk::Int, hi::Type);
"long"         L C I(identifier, Identifier("long"), tk::Long, hi::Type);
"native"       L C I(identifier, Identifier("native"), tk::Native, hi::Meta);
"short"        L C I(identifier, Identifier("short"), tk::Short, hi::Type);
"synchronized" L C I(identifier, Identifier("synchronized"), tk::Synchronized, hi::Meta);
"throws"       L C I(identifier, Identifier("throws"), tk::Throws, hi::Meta);
"transient"    L C I(identifier, Identifier("transient"), tk::Transient, hi::Meta);
"volatile"     L C I(identifier, Identifier("volatile"), tk::Volatile, hi::Meta);

"let"          L C I(identifier, Identifier("let"), tk::Let, hi::Meta);
"yield"        L C I(identifier, Identifier("yield"), tk::Yield, hi::Control);

"each"         L C I(identifier, Identifier("each"), tk::Each, hi::Control);
"of"           L C I(identifier, Identifier("of"), tk::Of, hi::Operator);

@begin E4X
"namespace"    L C I(identifier, Identifier("namespace"), tk::Namespace, hi::Meta);
"xml"          L C I(identifier, Identifier("xml"), tk::XML, hi::Meta);
@end

{IdentifierStart}{IdentifierPart}* L C I(identifier, Identifier(Y), tk::Identifier_, hi::Identifier);

(\.[0-9]+|(0|[1-9][0-9]*)(\.[0-9]*)?){Exponent}? L C I(number, Number(strtod(yytext, NULL)), tk::NumericLiteral, hi::Constant);

0[xX][0-9a-fA-F]+ L C I(number, Number(strtoull(yytext + 2, NULL, 16)), tk::NumericLiteral, hi::Constant);
0[0-7]+ L C I(number, Number(strtoull(yytext + 1, NULL, 8)), tk::NumericLiteral, hi::Constant);
0[bB][0-1]+ L C I(number, Number(strtoull(yytext + 2, NULL, 2)), tk::NumericLiteral, hi::Constant);

\"([^"\\\n]|{Escape})*\"|'([^'\\\n]|{Escape})*' L C {
    char *value(A char[yyleng]);
    char *local(value);

    for (yy_size_t i(1), e(yyleng - 1); i != e; ++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';
    I(string, String(value, local - value), tk::StringLiteral, hi::Constant);
}

\r?\n|\r|\xe2\x80[\xa8\xa9] yylloc->end.lines(); yylloc->step(); N

[ \t] L

<<EOF>> if (yyextra->auto_) { yyextra->auto_ = false; F(tk::AutoComplete, hi::Nothing); } 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_);
}

CYDriver::Condition CYDriver::GetCondition() {
    switch (yy_top_state(scanner_)) {
        case RegExp:
            return RegExpCondition;
@begin E4X
        case XMLContent:
            return XMLContentCondition;
        case XMLTag:
            return XMLTagCondition;
@end
        default:
            _assert(false);
    }
}

void CYDriver::SetCondition(Condition condition) {
    struct yyguts_t *yyg(reinterpret_cast<struct yyguts_t *>(scanner_));

    switch (condition) {
        case RegExpCondition:
            BEGIN(RegExp);
            break;
@begin E4X
        case XMLContentCondition:
            BEGIN(XMLContent);
            break;
        case XMLTagCondition:
            BEGIN(XMLTag);
            break;
@end
        default:
            _assert(false);
    }
}

void CYDriver::PushCondition(Condition condition) {
    switch (condition) {
        case RegExpCondition:
            yy_push_state(RegExp, scanner_);
            break;
@begin E4X
        case XMLContentCondition:
            yy_push_state(XMLContent, scanner_);
            break;
        case XMLTagCondition:
            yy_push_state(XMLTag, scanner_);
            break;
@end
        default:
            _assert(false);
    }
}

void CYDriver::PopCondition() {
    yy_pop_state(scanner_);
}
Commit	Line	Data
b3378a02	1	/* Cycript - Optimizing JavaScript Compiler/Runtime
8d7447c1	2	* Copyright (C) 2009-2012 Jay Freeman (saurik)
d15b59f5 JF	3	*/
d15b59f5 JF	4
b3378a02	5	/* GNU Lesser General Public License, Version 3 {{{ */
d15b59f5	6	/*
b3378a02 JF	7	* Cycript is free software: you can redistribute it and/or modify it under
	8	* the terms of the GNU Lesser General Public License as published by the
	9	* Free Software Foundation, either version 3 of the License, or (at your
	10	* option) any later version.
d15b59f5	11	*
b3378a02 JF	12	* Cycript is distributed in the hope that it will be useful, but WITHOUT
	13	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	14	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
	15	* License for more details.
d15b59f5	16	*
b3378a02 JF	17	* You should have received a copy of the GNU Lesser General Public License
	18	* along with Cycript. If not, see <http://www.gnu.org/licenses/>.
	19	**/
d15b59f5 JF	20	/* }}} */
d15b59f5 JF	21
2155ab92	22	/* XXX: supposedly I will be screwed on very very long multi-line comments and need to replace these with a manual lexer. http://websrv.cs.fsu.edu/~engelen/courses/COP5621/Pr2.pdf */
cb02f8ae	23
d15b59f5	24	%{
cac61857	25	#define YYLTYPE cy::location
63b4c5a8 JF	26	#include "Cycript.tab.hh"
63b4c5a8 JF	27	typedef cy::parser::token tk;
693d501b	28
82a02ede JF	29	#include "Highlight.hpp"
82a02ede JF	30
5999c315	31	#define YY_EXTRA_TYPE CYDriver *
db5e2840	32
153c6dec	33	// do /not/ fold token to the return: this is a macro and the ordering is dependent
82a02ede	34	#define F(value, highlight) do { \
153c6dec	35	int token(value); \
5602b1ee JF	36	yyextra->no_.AtImplementation = false; \
	37	yyextra->no_.Function = false; \
	38	yyextra->no_.OpenBrace = false; \
82a02ede	39	yylval->highlight_ = highlight; \
153c6dec	40	return token; \
3ea7eed0 JF	41	} while (false)
3ea7eed0 JF	42
2eb8215d JF	43	#define A new($pool)
	44	#define Y apr_pstrmemdup($pool, yytext, yyleng)
	45
82a02ede	46	#define I(type, Type, value, highlight) do { \
2eb8215d	47	yylval->type ## _ = A CY ## Type; \
82a02ede	48	F(value, highlight); \
2eb8215d JF	49	} while (false)
2eb8215d JF	50
697d6fd2	51	#define T yylval->newline_ = yyextra->state_ == CYNewLine; BEGIN(Div);
db5e2840 JF	52	#define C T yyextra->state_ = CYClear;
db5e2840 JF	53	#define R T yyextra->state_ = CYRestricted;
5befe15e JF	54
	55	#define N \
	56	if (yyextra->state_ != CYNewLine) { \
2eb8215d JF	57	if (yyextra->state_ != CYRestricted) \
	58	yyextra->state_ = CYNewLine; \
	59	else { \
5befe15e	60	yyextra->state_ = CYClear; \
82a02ede	61	F(tk::NewLine, hi::Nothing); \
2eb8215d	62	} \
5befe15e JF	63	}
5befe15e JF	64
691e4717	65	#define V(more) { \
cb02f8ae JF	66	if (const char nl = reinterpret_cast<const char >(memchr(yytext, '\n', yyleng))) { \
	67	unsigned lines(0); \
	68	size_t left; \
	69	do { \
	70	++lines; \
	71	left = yyleng - (nl - yytext) - 1; \
	72	nl = reinterpret_cast<const char *>(memchr(nl + 1, '\n', left)); \
	73	} while (nl != NULL); \
	74	yylloc->end.lines(lines); \
	75	yylloc->end.columns(left); \
	76	yylloc->step(); \
691e4717	77	more \
cb02f8ae JF	78	} else L \
	79	}
	80
5befe15e JF	81	#define L { \
	82	yylloc->step(); \
	83	yylloc->columns(yyleng); \
	84	}
e7ed5354	85
abc79d6e JF	86	#define M { \
	87	if (yyextra->commented_) { \
	88	I(comment, Comment(Y), tk::Comment, hi::Comment); \
	89	} \
	90	}
	91
931b816a JF	92	int H(char c) {
	93	if (c >= '0' && c <= '9')
	94	return c - '0';
	95	if (c >= 'a' && c <= 'f')
	96	return c - 'a' + 10;
	97	if (c >= 'A' && c <= 'F')
	98	return c - 'A' + 10;
	99	return -1;
	100	}
	101
e7ed5354	102	#define YY_INPUT(data, value, size) { \
d3b63265	103	if (yyextra->data_.eof()) \
e7ed5354 JF	104	value = YY_NULL; \
e7ed5354 JF	105	else { \
d3b63265 JF	106	yyextra->data_.read(data, size); \
	107	size_t copy(yyextra->data_.gcount()); \
	108	value = copy == 0 ? YY_NULL : copy; \
e7ed5354 JF	109	} \
	110	}
	111
e5332278 JF	112	%}
	113
	114	%option prefix="cy"
	115	%option bison-bridge
	116	%option bison-locations
	117	%option noyywrap
	118	%option yylineno
	119	%option nounput
	120	%option interactive
924f67b2	121	%option reentrant
691e4717	122	%option stack
e5332278	123
2bf24581	124	Exponent [eE][+-]?[0-9]+
367eebb1	125	Escape \\[\\'"bfnrtv]\|\\0\|\\x[0-9a-fA-F]{2}\|\\u[0-9a-fA-F]{4}\|\\\n
e5332278	126
63cd45c9 JF	127	IdentifierStart [a-zA-Z$_]
	128	IdentifierPart [a-zA-Z$_0-9]
	129
	130	NonTerminator [^\n]
	131	BackslashSequence \\{NonTerminator}
	132	RegularExpressionFirstChar [^\n*\\/]\|{BackslashSequence}
	133	RegularExpressionChar [^\n\\/]\|{BackslashSequence}
	134	RegularExpressionFlags {IdentifierPart}*
	135	RegularExpressionChars {RegularExpressionChar}*
697d6fd2	136	RegularExpressionBody {RegularExpressionFirstChar}{RegularExpressionChars}
63cd45c9	137
691e4717 JF	138	@begin E4X
	139	XMLNameStart [a-zA-Z_:]
	140	XMLNamePart [a-zA-Z0-9.-_:]
	141	XMLName {XMLNameStart}{XMLNamePart}*
	142	@end
	143
697d6fd2 JF	144	%s Div
697d6fd2 JF	145	%s RegExp
63cd45c9	146
691e4717 JF	147	@begin E4X
	148	%x XMLContent
	149	%x XMLTag
	150	@end
	151
e5332278 JF	152	%%
e5332278 JF	153
82a02ede	154	<RegExp>\/{RegularExpressionBody}\/{RegularExpressionFlags} L C I(literal, RegEx(Y), tk::RegularExpressionLiteral, hi::Constant);
63cd45c9	155
abc79d6e	156	\/\/[^\n]* L M
fe123f47 JF	157
	158	/* http://ostermiller.org/findcomment.html */
	159	/* XXX: unify these two rules using !? */
82a02ede	160	\/\!([^]\|[\r\n]\|(\+([^/]\|[\r\n])))\+\/ V() C I(comment, Comment(Y), tk::Comment, hi::Comment);
abc79d6e	161	\/\([^]\|[\r\n]\|(\+([^/]\|[\r\n])))\+\/ V(N) M
66fb559f	162
cb02f8ae	163	@begin E4X
82a02ede JF	164	<RegExp>"<>" L F(tk::LeftRight, hi::Structure);
82a02ede JF	165	<XMLContent>"</>" L F(tk::LeftSlashRight, hi::Structure);
691e4717	166
82a02ede JF	167	<RegExp,XMLContent>\<!\[CDATA\[(\n\|[^[]\|\[[^[]\|\[\[[^>])*]]> V() F(tk::XMLCDATA, hi::Constant);
	168	<RegExp,XMLContent>\<!--(\n\|[^-]\|-[^-])*--> V() F(tk::XMLComment, hi::Comment);
	169	<RegExp,XMLContent>\<?(\n\|[^?]\|\?[^>])*?> V() F(tk::XMLPI, hi::Meta);
691e4717	170
82a02ede JF	171	<XMLTag>"=" L F(tk::Equal, hi::Structure);
	172	<XMLTag>">" L F(tk::Right, hi::Structure);
	173	<XMLTag>"/>" L F(tk::SlashRight, hi::Structure);
	174	<XMLTag>"{" L F(tk::OpenBrace, hi::Structure);
691e4717	175
82a02ede JF	176	<XMLTag>\"(\n\|[^"])\"\|'(\n\|[^'])' V() F(tk::XMLAttributeValue, hi::Constant);
	177	<XMLTag>{XMLName} L F(tk::XMLName, hi::Identifier);
	178	<XMLTag>[ \t\r\n] V() F(tk::XMLWhitespace, hi::Nothing);
db5e2840	179
82a02ede JF	180	<XMLContent>"{" L F(tk::OpenBrace, hi::Structure);
	181	<XMLContent>"<" L F(tk::Left, hi::Structure);
	182	<XMLContent>"</" L F(tk::LeftSlash, hi::Structure);
691e4717 JF	183	@end
691e4717 JF	184
82a02ede	185	"..." L C F(tk::PeriodPeriodPeriod, hi::Meta);
c8a0500b	186
691e4717	187	@begin E4X
82a02ede JF	188	"::" L C F(tk::ColonColon, hi::Operator);
82a02ede JF	189	".." L C F(tk::PeriodPeriod, hi::Operator);
cb02f8ae	190	@end
ac9a5ce1	191
313708a9	192	@begin E4X ObjectiveC
82a02ede	193	"@" L C F(tk::At, hi::Operator);
313708a9 JF	194	@end
313708a9 JF	195
82a02ede JF	196	"&" L C F(tk::Ampersand, hi::Operator);
	197	"&&" L C F(tk::AmpersandAmpersand, hi::Operator);
	198	"&=" L C F(tk::AmpersandEqual, hi::Operator);
	199	"^" L C F(tk::Carrot, hi::Operator);
	200	"^=" L C F(tk::CarrotEqual, hi::Operator);
	201	"=" L C F(tk::Equal, hi::Operator);
	202	"==" L C F(tk::EqualEqual, hi::Operator);
	203	"===" L C F(tk::EqualEqualEqual, hi::Operator);
	204	"=>" L C F(tk::EqualRight, hi::Operator);
	205	"!" L C F(tk::Exclamation, hi::Operator);
	206	"!=" L C F(tk::ExclamationEqual, hi::Operator);
	207	"!==" L C F(tk::ExclamationEqualEqual, hi::Operator);
	208	"-" L C F(tk::Hyphen, hi::Operator);
	209	"-=" L C F(tk::HyphenEqual, hi::Operator);
	210	"--" L C F(yylval->newline_ ? tk::HyphenHyphen_ : tk::HyphenHyphen, hi::Operator);
	211	"->" L C F(tk::HyphenRight, hi::Operator);
	212	"<" L C F(tk::Left, hi::Operator);
	213	"<=" L C F(tk::LeftEqual, hi::Operator);
	214	"<<" L C F(tk::LeftLeft, hi::Operator);
	215	"<<=" L C F(tk::LeftLeftEqual, hi::Operator);
	216	"%" L C F(tk::Percent, hi::Operator);
	217	"%=" L C F(tk::PercentEqual, hi::Operator);
	218	"." L C F(tk::Period, hi::Operator);
	219	"\|" L C F(tk::Pipe, hi::Operator);
	220	"\|=" L C F(tk::PipeEqual, hi::Operator);
	221	"\|\|" L C F(tk::PipePipe, hi::Operator);
	222	"+" L C F(tk::Plus, hi::Operator);
	223	"+=" L C F(tk::PlusEqual, hi::Operator);
	224	"++" L C F(yylval->newline_ ? tk::PlusPlus_ : tk::PlusPlus, hi::Operator);
	225	">" L C F(tk::Right, hi::Operator);
	226	">=" L C F(tk::RightEqual, hi::Operator);
	227	">>" L C F(tk::RightRight, hi::Operator);
	228	">>=" L C F(tk::RightRightEqual, hi::Operator);
	229	">>>" L C F(tk::RightRightRight, hi::Operator);
	230	">>>=" L C F(tk::RightRightRightEqual, hi::Operator);
	231	"*" L C F(tk::Star, hi::Operator);
	232	"*=" L C F(tk::StarEqual, hi::Operator);
	233	"~" L C F(tk::Tilde, hi::Operator);
	234
	235	<Div>"/" L C F(tk::Slash, hi::Operator);
	236	<Div>"/=" L C F(tk::SlashEqual, hi::Operator);
	237
	238	":" L C F(tk::Colon, hi::Structure);
	239	"," L C F(tk::Comma, hi::Structure);
	240	"?" L C F(tk::Question, hi::Structure);
	241	";" L C F(tk::SemiColon, hi::Structure);
	242
	243	"(" L C F(tk::OpenParen, hi::Structure);
	244	")" L C F(tk::CloseParen, hi::Structure);
	245
	246	"{" L C F(yyextra->no_.OpenBrace ? tk::OpenBrace__ : yylval->newline_ ? tk::OpenBrace_ : tk::OpenBrace, hi::Structure);
	247	"}" L C F(tk::CloseBrace, hi::Structure);
	248
	249	"[" L C F(tk::OpenBracket, hi::Structure);
	250	"]" L C F(tk::CloseBracket, hi::Structure);
5befe15e	251
1ba6903e	252	@begin Java
82a02ede	253	"@class" L C F(tk::AtClass, hi::Meta);
1ba6903e JF	254	@end
1ba6903e JF	255
cb02f8ae	256	@begin ObjectiveC
82a02ede JF	257	"@end" L C F(tk::AtEnd, hi::Meta);
	258	"@implementation" L C F(yyextra->no_.AtImplementation ? tk::AtImplementation_ : tk::AtImplementation, hi::Meta);
	259	"@import" L C F(tk::AtImport, hi::Meta);
	260	"@selector" L C F(tk::AtSelector, hi::Meta);
cf19d1c1	261
355cc1eb JF	262	"NULL" L C I(identifier, Identifier("NULL"), tk::Identifier_, hi::Constant);
	263	"nil" L C I(identifier, Identifier("nil"), tk::Identifier_, hi::Constant);
	264	"YES" L C I(identifier, Identifier("YES"), tk::Identifier_, hi::Constant);
	265	"NO" L C I(identifier, Identifier("NO"), tk::Identifier_, hi::Constant);
cb02f8ae	266	@end
d35a3b07	267
355cc1eb JF	268	"undefined" L C I(identifier, Identifier("undefined"), tk::Identifier_, hi::Operator);
355cc1eb JF	269
82a02ede JF	270	"false" L C I(false, False(), tk::False, hi::Constant);
	271	"null" L C I(null, Null(), tk::Null, hi::Constant);
	272	"true" L C I(true, True(), tk::True, hi::Constant);
	273
	274	"auto" L C I(word, Word("auto"), tk::Auto, hi::Meta);
	275	"break" L R I(word, Word("break"), tk::Break, hi::Control);
	276	"case" L C I(word, Word("case"), tk::Case, hi::Control);
	277	"catch" L C I(word, Word("catch"), tk::Catch, hi::Control);
	278	"continue" L R I(word, Word("continue"), tk::Continue, hi::Control);
	279	"default" L C I(word, Word("default"), tk::Default, hi::Control);
	280	"delete" L C I(word, Word("delete"), tk::Delete, hi::Operator);
	281	"do" L C I(word, Word("do"), tk::Do, hi::Control);
	282	"else" L C I(word, Word("else"), tk::Else, hi::Control);
	283	"finally" L C I(word, Word("finally"), tk::Finally, hi::Control);
	284	"for" L C I(word, Word("for"), tk::For, hi::Control);
	285	"function" L C I(word, Word("function"), yyextra->no_.Function ? tk::Function_ : tk::Function, hi::Meta);
	286	"if" L C I(word, Word("if"), tk::If, hi::Control);
	287	"in" L C I(word, Word("in"), yyextra->in_.top() ? tk::In_ : tk::In, hi::Operator);
	288	"instanceof" L C I(word, Word("instanceof"), tk::InstanceOf, hi::Operator);
	289	"new" L C I(word, Word("new"), tk::New, hi::Operator);
	290	"return" L R I(word, Word("return"), tk::Return, hi::Control);
	291	"switch" L C I(word, Word("switch"), tk::Switch, hi::Control);
	292	"this" L C I(this, This(), tk::This, hi::Constant);
	293	"throw" L R I(word, Word("throw"), tk::Throw, hi::Control);
	294	"try" L C I(word, Word("try"), tk::Try, hi::Control);
	295	"typeof" L C I(word, Word("typeof"), tk::TypeOf, hi::Operator);
	296	"var" L C I(word, Word("var"), tk::Var, hi::Meta);
	297	"void" L C I(word, Word("void"), tk::Void, hi::Operator);
	298	"while" L C I(word, Word("while"), tk::While, hi::Control);
	299	"with" L C I(word, Word("with"), tk::With, hi::Control);
	300
	301	"debugger" L C I(word, Word("debugger"), tk::Debugger, hi::Meta);
	302
	303	"const" L C I(word, Word("const"), tk::Const, hi::Meta);
	304
	305	"class" L C I(word, Word("class"), tk::Class, hi::Meta);
	306	"enum" L C I(word, Word("enum"), tk::Enum, hi::Meta);
	307	"export" L C I(word, Word("export"), tk::Export, hi::Meta);
	308	"extends" L C I(word, Word("extends"), tk::Extends, hi::Meta);
	309	"import" L C I(word, Word("import"), tk::Import, hi::Meta);
	310	"super" L C I(word, Word("super"), tk::Super, hi::Constant);
	311
	312	"implements" L C I(identifier, Identifier("implements"), tk::Implements, hi::Meta);
	313	"interface" L C I(identifier, Identifier("interface"), tk::Interface, hi::Meta);
	314	"package" L C I(identifier, Identifier("package"), tk::Package, hi::Meta);
	315	"private" L C I(identifier, Identifier("private"), tk::Private, hi::Meta);
	316	"protected" L C I(identifier, Identifier("protected"), tk::Protected, hi::Meta);
	317	"public" L C I(identifier, Identifier("public"), tk::Public, hi::Meta);
	318	"static" L C I(identifier, Identifier("static"), tk::Static, hi::Meta);
	319
	320	"abstract" L C I(identifier, Identifier("abstract"), tk::Abstract, hi::Meta);
	321	"boolean" L C I(identifier, Identifier("boolean"), tk::Boolean, hi::Type);
	322	"byte" L C I(identifier, Identifier("byte"), tk::Byte, hi::Type);
	323	"char" L C I(identifier, Identifier("char"), tk::Char, hi::Type);
	324	"double" L C I(identifier, Identifier("double"), tk::Double, hi::Type);
	325	"final" L C I(identifier, Identifier("final"), tk::Final, hi::Meta);
	326	"float" L C I(identifier, Identifier("float"), tk::Float, hi::Type);
	327	"goto" L C I(identifier, Identifier("goto"), tk::Goto, hi::Control);
	328	"int" L C I(identifier, Identifier("int"), tk::Int, hi::Type);
	329	"long" L C I(identifier, Identifier("long"), tk::Long, hi::Type);
	330	"native" L C I(identifier, Identifier("native"), tk::Native, hi::Meta);
	331	"short" L C I(identifier, Identifier("short"), tk::Short, hi::Type);
	332	"synchronized" L C I(identifier, Identifier("synchronized"), tk::Synchronized, hi::Meta);
	333	"throws" L C I(identifier, Identifier("throws"), tk::Throws, hi::Meta);
334	"transient" L C I(identifier, Identifier("transient"), tk::Transient, hi::Meta);
335	"volatile" L C I(identifier, Identifier("volatile"), tk::Volatile, hi::Meta);
336
337	"let" L C I(identifier, Identifier("let"), tk::Let, hi::Meta);
338	"yield" L C I(identifier, Identifier("yield"), tk::Yield, hi::Control);
339
340	"each" L C I(identifier, Identifier("each"), tk::Each, hi::Control);
341	"of" L C I(identifier, Identifier("of"), tk::Of, hi::Operator);
5d646fb5	342
691e4717	343	@begin E4X
82a02ede JF	344	"namespace" L C I(identifier, Identifier("namespace"), tk::Namespace, hi::Meta);
82a02ede JF	345	"xml" L C I(identifier, Identifier("xml"), tk::XML, hi::Meta);
691e4717 JF	346	@end
691e4717 JF	347
82a02ede	348	{IdentifierStart}{IdentifierPart}* L C I(identifier, Identifier(Y), tk::Identifier_, hi::Identifier);
5d646fb5	349
82a02ede	350	(\.[0-9]+\|(0\|[1-9][0-9])(\.[0-9])?){Exponent}? L C I(number, Number(strtod(yytext, NULL)), tk::NumericLiteral, hi::Constant);
5d646fb5	351
82a02ede JF	352	0[xX][0-9a-fA-F]+ L C I(number, Number(strtoull(yytext + 2, NULL, 16)), tk::NumericLiteral, hi::Constant);
	353	0[0-7]+ L C I(number, Number(strtoull(yytext + 1, NULL, 8)), tk::NumericLiteral, hi::Constant);
	354	0[bB][0-1]+ L C I(number, Number(strtoull(yytext + 2, NULL, 2)), tk::NumericLiteral, hi::Constant);
5befe15e	355
931b816a	356	\"([^"\\\n]\|{Escape})\"\|'([^'\\\n]\|{Escape})' L C {
2eb8215d	357	char *value(A char[yyleng]);
931b816a JF	358	char *local(value);
931b816a JF	359
66f8d960	360	for (yy_size_t i(1), e(yyleng - 1); i != e; ++i) {
931b816a JF	361	char next(yytext[i]);
	362
	363	if (yytext[i] == '\\')
	364	switch (next = yytext[++i]) {
367eebb1	365	case '\n': continue;
931b816a JF	366	case '\\': next = '\\'; break;
	367	case '\'': next = '\''; break;
	368	case '"': next = '"'; break;
	369	case 'b': next = '\b'; break;
	370	case 'f': next = '\f'; break;
	371	case 'n': next = '\n'; break;
	372	case 'r': next = '\r'; break;
	373	case 't': next = '\t'; break;
	374	case 'v': next = '\v'; break;
	375	case '0': next = '\0'; break;
	376
	377	case 'x':
	378	next = H(yytext[i + 1]) << 4 \| H(yytext[i + 2]);
	379	i += 2;
	380	break;
	381	}
	382
	383	*local++ = next;
	384	}
	385
	386	*local = '\0';
82a02ede	387	I(string, String(value, local - value), tk::StringLiteral, hi::Constant);
931b816a	388	}
5befe15e	389
3ea7eed0	390	\r?\n\|\r\|\xe2\x80[\xa8\xa9] yylloc->end.lines(); yylloc->step(); N
5befe15e JF	391
5befe15e JF	392	[ \t] L
7e5391fd	393
82a02ede	394	<<EOF>> if (yyextra->auto_) { yyextra->auto_ = false; F(tk::AutoComplete, hi::Nothing); } L yyterminate();
94d55b5c	395
48e3be8a	396	. L {
94d55b5c JF	397	CYDriver::Error error;
	398	error.location_ = *yylloc;
	399	error.message_ = "syntax error, unknown token";
	400	yyextra->errors_.push_back(error);
	401	yyterminate();
	402	}
924f67b2 JF	403
	404	%%
	405
5999c315	406	void CYDriver::ScannerInit() {
924f67b2 JF	407	cylex_init(&scanner_);
	408	cyset_extra(this, scanner_);
	409	}
	410
5999c315	411	void CYDriver::ScannerDestroy() {
924f67b2 JF	412	cylex_destroy(scanner_);
924f67b2 JF	413	}
63cd45c9	414
691e4717 JF	415	CYDriver::Condition CYDriver::GetCondition() {
	416	switch (yy_top_state(scanner_)) {
	417	case RegExp:
	418	return RegExpCondition;
	419	@begin E4X
	420	case XMLContent:
	421	return XMLContentCondition;
	422	case XMLTag:
	423	return XMLTagCondition;
	424	@end
	425	default:
	426	_assert(false);
	427	}
	428	}
	429
	430	void CYDriver::SetCondition(Condition condition) {
63cd45c9 JF	431	struct yyguts_t yyg(reinterpret_cast<struct yyguts_t >(scanner_));
	432
	433	switch (condition) {
697d6fd2 JF	434	case RegExpCondition:
697d6fd2 JF	435	BEGIN(RegExp);
63cd45c9	436	break;
691e4717 JF	437	@begin E4X
	438	case XMLContentCondition:
	439	BEGIN(XMLContent);
	440	break;
	441	case XMLTagCondition:
	442	BEGIN(XMLTag);
	443	break;
	444	@end
63cd45c9 JF	445	default:
	446	_assert(false);
	447	}
	448	}
691e4717 JF	449
	450	void CYDriver::PushCondition(Condition condition) {
	451	switch (condition) {
	452	case RegExpCondition:
	453	yy_push_state(RegExp, scanner_);
	454	break;
	455	@begin E4X
	456	case XMLContentCondition:
	457	yy_push_state(XMLContent, scanner_);
	458	break;
	459	case XMLTagCondition:
	460	yy_push_state(XMLTag, scanner_);
	461	break;
	462	@end
	463	default:
	464	_assert(false);
	465	}
	466	}
	467
	468	void CYDriver::PopCondition() {
	469	yy_pop_state(scanner_);
	470	}