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git-svn-id: https://svn.o-hand.com/repos/poky@2 311d38ba-8fff-0310-9ca6-ca027cbcb966
This commit is contained in:
Richard Purdie
@@ -0,0 +1,288 @@
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/* bbf.flex
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written by Marc Singer
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||||
6 January 2005
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||||
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||||
This program is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License as
|
||||
published by the Free Software Foundation; either version 2 of the
|
||||
License, or (at your option) any later version.
|
||||
|
||||
This program 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
|
||||
General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
||||
USA.
|
||||
|
||||
DESCRIPTION
|
||||
-----------
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flex lexer specification for a BitBake input file parser.
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Unfortunately, flex doesn't welcome comments within the rule sets.
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I say unfortunately because this lexer is unreasonably complex and
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comments would make the code much easier to comprehend.
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The BitBake grammar is not regular. In order to interpret all
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||||
of the available input files, the lexer maintains much state as it
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parses. There are places where this lexer will emit tokens that
|
||||
are invalid. The parser will tend to catch these.
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The lexer requires C++ at the moment. The only reason for this has
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to do with a very small amount of managed state. Producing a C
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lexer should be a reasonably easy task as long as the %reentrant
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option is used.
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NOTES
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-----
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o RVALUES. There are three kinds of RVALUES. There are unquoted
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values, double quote enclosed strings, and single quote
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||||
strings. Quoted strings may contain unescaped quotes (of either
|
||||
type), *and* any type may span more than one line by using a
|
||||
continuation '\' at the end of the line. This requires us to
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||||
recognize all types of values with a single expression.
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Moreover, the only reason to quote a value is to include
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||||
trailing or leading whitespace. Whitespace within a value is
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||||
preserved, ugh.
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o CLASSES. C_ patterns define classes. Classes ought not include
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||||
a repitition operator, instead letting the reference to the class
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define the repitition count.
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C_SS - symbol start
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C_SB - symbol body
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C_SP - whitespace
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*/
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%option never-interactive
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%option yylineno
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%option noyywrap
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%option reentrant stack
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%{
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#include "token.h"
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#include "lexer.h"
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#include <ctype.h>
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extern void *bbparseAlloc(void *(*mallocProc)(size_t));
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extern void bbparseFree(void *p, void (*freeProc)(void*));
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extern void *bbparseAlloc(void *(*mallocProc)(size_t));
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extern void *bbparse(void*, int, token_t, lex_t*);
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extern void bbparseTrace(FILE *TraceFILE, char *zTracePrompt);
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//static const char* rgbInput;
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//static size_t cbInput;
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||||
|
||||
|
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int lineError;
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int errorParse;
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enum {
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errorNone = 0,
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errorUnexpectedInput,
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errorUnsupportedFeature,
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};
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#define YY_EXTRA_TYPE lex_t*
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/* Read from buffer */
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#define YY_INPUT(buf,result,max_size) \
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{ yyextra->input(buf, &result, max_size); }
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|
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//#define YY_DECL static size_t yylex ()
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|
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#define ERROR(e) \
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do { lineError = yylineno; errorParse = e; yyterminate (); } while (0)
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static const char* fixup_escapes (const char* sz);
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%}
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|
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C_SP [ \t]
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COMMENT #.*\n
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OP_ASSIGN "="
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OP_IMMEDIATE ":="
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OP_PREPEND "=+"
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OP_APPEND "+="
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OP_COND "?="
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B_OPEN "{"
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B_CLOSE "}"
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K_ADDTASK "addtask"
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||||
K_ADDHANDLER "addhandler"
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K_AFTER "after"
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K_BEFORE "before"
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K_DEF "def"
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K_INCLUDE "include"
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K_INHERIT "inherit"
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K_PYTHON "python"
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K_FAKEROOT "fakeroot"
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K_EXPORT "export"
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K_EXPORT_FUNC "EXPORT_FUNCTIONS"
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||||
|
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STRING \"([^\n\r]|"\\\n")*\"
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SSTRING \'([^\n\r]|"\\\n")*\'
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VALUE ([^'" \t\n])|([^'" \t\n]([^\n]|(\\\n))*[^'" \t\n])
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|
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C_SS [a-zA-Z_]
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C_SB [a-zA-Z0-9_+-.]
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REF $\{{C_SS}{C_SB}*\}
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||||
SYMBOL {C_SS}{C_SB}*
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||||
VARIABLE $?{C_SS}({C_SB}*|{REF})*(\[[a-zA-Z0-9_]*\])?
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FILENAME ([a-zA-Z_./]|{REF})(([-+a-zA-Z0-9_./]*)|{REF})*
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PROC \({C_SP}*\)
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%s S_DEF
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%s S_DEF_ARGS
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%s S_DEF_BODY
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%s S_FUNC
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%s S_INCLUDE
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%s S_INHERIT
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%s S_PROC
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%s S_RVALUE
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%s S_TASK
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%%
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{OP_APPEND} { BEGIN S_RVALUE;
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yyextra->accept (T_OP_APPEND); }
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{OP_PREPEND} { BEGIN S_RVALUE;
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yyextra->accept (T_OP_PREPEND); }
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{OP_IMMEDIATE} { BEGIN S_RVALUE;
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yyextra->accept (T_OP_IMMEDIATE); }
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{OP_ASSIGN} { BEGIN S_RVALUE;
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yyextra->accept (T_OP_ASSIGN); }
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{OP_COND} { BEGIN S_RVALUE;
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||||
yyextra->accept (T_OP_COND); }
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|
||||
<S_RVALUE>\\\n{C_SP}* { }
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||||
<S_RVALUE>{STRING} { BEGIN INITIAL;
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||||
size_t cb = yyleng;
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while (cb && isspace (yytext[cb - 1]))
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--cb;
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yytext[cb - 1] = 0;
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yyextra->accept (T_STRING, yytext + 1); }
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||||
<S_RVALUE>{SSTRING} { BEGIN INITIAL;
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||||
size_t cb = yyleng;
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||||
while (cb && isspace (yytext[cb - 1]))
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||||
--cb;
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||||
yytext[cb - 1] = 0;
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||||
yyextra->accept (T_STRING, yytext + 1); }
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||||
|
||||
<S_RVALUE>{VALUE} { ERROR (errorUnexpectedInput); }
|
||||
<S_RVALUE>{C_SP}*\n+ { BEGIN INITIAL;
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||||
yyextra->accept (T_STRING, NULL); }
|
||||
|
||||
{K_INCLUDE} { BEGIN S_INCLUDE;
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yyextra->accept (T_INCLUDE); }
|
||||
{K_INHERIT} { BEGIN S_INHERIT;
|
||||
yyextra->accept (T_INHERIT); }
|
||||
{K_ADDTASK} { BEGIN S_TASK;
|
||||
yyextra->accept (T_ADDTASK); }
|
||||
{K_ADDHANDLER} { yyextra->accept (T_ADDHANDLER); }
|
||||
{K_EXPORT_FUNC} { BEGIN S_FUNC;
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||||
yyextra->accept (T_EXPORT_FUNC); }
|
||||
<S_TASK>{K_BEFORE} { yyextra->accept (T_BEFORE); }
|
||||
<S_TASK>{K_AFTER} { yyextra->accept (T_AFTER); }
|
||||
<INITIAL>{K_EXPORT} { yyextra->accept (T_EXPORT); }
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||||
|
||||
<INITIAL>{K_FAKEROOT} { yyextra->accept (T_FAKEROOT); }
|
||||
<INITIAL>{K_PYTHON} { yyextra->accept (T_PYTHON); }
|
||||
{PROC}{C_SP}*{B_OPEN}{C_SP}*\n* { BEGIN S_PROC;
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||||
yyextra->accept (T_PROC_OPEN); }
|
||||
<S_PROC>{B_CLOSE}{C_SP}*\n* { BEGIN INITIAL;
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||||
yyextra->accept (T_PROC_CLOSE); }
|
||||
<S_PROC>([^}][^\n]*)?\n* { yyextra->accept (T_PROC_BODY, yytext); }
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||||
|
||||
{K_DEF} { BEGIN S_DEF; }
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||||
<S_DEF>{SYMBOL} { BEGIN S_DEF_ARGS;
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||||
yyextra->accept (T_SYMBOL, yytext); }
|
||||
<S_DEF_ARGS>[^\n:]*: { yyextra->accept (T_DEF_ARGS, yytext); }
|
||||
<S_DEF_ARGS>{C_SP}*\n { BEGIN S_DEF_BODY; }
|
||||
<S_DEF_BODY>{C_SP}+[^\n]*\n { yyextra->accept (T_DEF_BODY, yytext); }
|
||||
<S_DEF_BODY>\n { yyextra->accept (T_DEF_BODY, yytext); }
|
||||
<S_DEF_BODY>. { BEGIN INITIAL; unput (yytext[0]); }
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|
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{COMMENT} { }
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||||
|
||||
<INITIAL>{SYMBOL} { yyextra->accept (T_SYMBOL, yytext); }
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||||
<INITIAL>{VARIABLE} { yyextra->accept (T_VARIABLE, yytext); }
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||||
|
||||
<S_TASK>{SYMBOL} { yyextra->accept (T_TSYMBOL, yytext); }
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||||
<S_FUNC>{SYMBOL} { yyextra->accept (T_FSYMBOL, yytext); }
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<S_INHERIT>{SYMBOL} { yyextra->accept (T_ISYMBOL, yytext); }
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||||
<S_INCLUDE>{FILENAME} { BEGIN INITIAL;
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||||
yyextra->accept (T_ISYMBOL, yytext); }
|
||||
|
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<S_TASK>\n { BEGIN INITIAL; }
|
||||
<S_FUNC>\n { BEGIN INITIAL; }
|
||||
<S_INHERIT>\n { BEGIN INITIAL; }
|
||||
|
||||
[ \t\r\n] /* Insignificant whitespace */
|
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|
||||
. { ERROR (errorUnexpectedInput); }
|
||||
|
||||
/* Check for premature termination */
|
||||
<<EOF>> { return T_EOF; }
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||||
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||||
%%
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||||
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||||
void lex_t::accept (int token, const char* sz)
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||||
{
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||||
token_t t;
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memset (&t, 0, sizeof (t));
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||||
t.copyString(sz);
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||||
|
||||
/* tell lemon to parse the token */
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||||
parse (parser, token, t, this);
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||||
}
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||||
|
||||
int lex_t::line ()const
|
||||
{
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||||
return yyget_lineno (scanner);
|
||||
}
|
||||
|
||||
const char* lex_t::filename ()const
|
||||
{
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||||
return m_fileName;
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||||
}
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||||
|
||||
void parse (MappedFile* mf)
|
||||
{
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||||
void* parser = bbparseAlloc (malloc);
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||||
yyscan_t scanner;
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||||
lex_t lex;
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||||
|
||||
yylex_init (&scanner);
|
||||
|
||||
lex.parser = parser;
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||||
lex.scanner = scanner;
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||||
lex.mf = mf;
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||||
lex.rgbInput = mf->m_rgb;
|
||||
lex.cbInput = mf->m_cb;
|
||||
lex.parse = bbparse;
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||||
yyset_extra (&lex, scanner);
|
||||
|
||||
|
||||
int result = yylex (scanner);
|
||||
|
||||
lex.accept (0);
|
||||
bbparseTrace (NULL, NULL);
|
||||
|
||||
if (result != T_EOF)
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||||
WARNING ("premature end of file\n");
|
||||
|
||||
yylex_destroy (scanner);
|
||||
bbparseFree (parser, free);
|
||||
}
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||||
@@ -0,0 +1,133 @@
|
||||
"""
|
||||
|
||||
BitBake C Parser Python Code
|
||||
|
||||
Copyright (C) 2005 Holger Hans Peter Freyther
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
|
||||
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
||||
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
||||
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
|
||||
THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
"""
|
||||
|
||||
__version__ = "0xdeadbeef"
|
||||
|
||||
class CParser:
|
||||
"""
|
||||
The C-based Parser for Bitbake
|
||||
"""
|
||||
def __init__(self, data, type):
|
||||
"""
|
||||
Constructor
|
||||
"""
|
||||
self._data = data
|
||||
|
||||
def _syntax_error(self, file, line):
|
||||
"""
|
||||
lemon/flex reports an syntax error to us and we will
|
||||
raise an exception
|
||||
"""
|
||||
pass
|
||||
|
||||
def _export(self, data):
|
||||
"""
|
||||
EXPORT VAR = "MOO"
|
||||
we will now export VAR
|
||||
"""
|
||||
pass
|
||||
|
||||
def _assign(self, key, value):
|
||||
"""
|
||||
VAR = "MOO"
|
||||
we will assign moo to VAR
|
||||
"""
|
||||
pass
|
||||
|
||||
def _assign(self, key, value):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _append(self, key, value):
|
||||
"""
|
||||
VAR += "MOO"
|
||||
we will append " MOO" to var
|
||||
"""
|
||||
pass
|
||||
|
||||
def _prepend(self, key, value):
|
||||
"""
|
||||
VAR =+ "MOO"
|
||||
we will prepend "MOO " to var
|
||||
"""
|
||||
pass
|
||||
|
||||
def _immediate(self, key, value):
|
||||
"""
|
||||
VAR := "MOO ${CVSDATE}"
|
||||
we will assign immediately and expand vars
|
||||
"""
|
||||
pass
|
||||
|
||||
def _conditional(self, key, value):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _add_task(self, task, before = None, after = None):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _include(self, file):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _inherit(self, file):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _shell_procedure(self, name, body):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _python_procedure(self, name, body):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _fakeroot_procedure(self, name, body):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _def_procedure(self, a, b, c):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _export_func(self, name):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
|
||||
def _add_handler(self, handler):
|
||||
"""
|
||||
"""
|
||||
pass
|
||||
@@ -0,0 +1,161 @@
|
||||
/* bbp.lemon
|
||||
|
||||
written by Marc Singer
|
||||
6 January 2005
|
||||
|
||||
This program is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU General Public License as
|
||||
published by the Free Software Foundation; either version 2 of the
|
||||
License, or (at your option) any later version.
|
||||
|
||||
This program 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
|
||||
General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
||||
USA.
|
||||
|
||||
DESCRIPTION
|
||||
-----------
|
||||
|
||||
lemon parser specification file for a BitBake input file parser.
|
||||
|
||||
Most of the interesting shenanigans are done in the lexer. The
|
||||
BitBake grammar is not regular. In order to emit tokens that
|
||||
the parser can properly interpret in LALR fashion, the lexer
|
||||
manages the interpretation state. This is why there are ISYMBOLs,
|
||||
SYMBOLS, and TSYMBOLS.
|
||||
|
||||
This parser was developed by reading the limited available
|
||||
documentation for BitBake and by analyzing the available BB files.
|
||||
There is no assertion of correctness to be made about this parser.
|
||||
|
||||
*/
|
||||
|
||||
%token_type {token_t}
|
||||
%name bbparse
|
||||
%token_prefix T_
|
||||
%extra_argument {lex_t* lex}
|
||||
|
||||
%include {
|
||||
#include "token.h"
|
||||
}
|
||||
|
||||
|
||||
%token_destructor { $$.release_this (); }
|
||||
|
||||
%syntax_error { printf ("%s:%d: syntax error\n",
|
||||
lex->filename (), lex->line ()); }
|
||||
|
||||
program ::= statements.
|
||||
|
||||
statements ::= statements statement.
|
||||
statements ::= .
|
||||
|
||||
variable(r) ::= SYMBOL(s).
|
||||
{ r.assignString( s.string() );
|
||||
s.assignString( 0 );
|
||||
s.release_this(); }
|
||||
variable(r) ::= VARIABLE(v).
|
||||
{
|
||||
r.assignString( v.string() );
|
||||
v.assignString( 0 );
|
||||
v.release_this(); }
|
||||
|
||||
statement ::= EXPORT variable(s) OP_ASSIGN STRING(v).
|
||||
{ e_assign( s.string(), v.string() );
|
||||
e_export( s.string() );
|
||||
s.release_this(); v.release_this(); }
|
||||
statement ::= EXPORT variable(s) OP_IMMEDIATE STRING(v).
|
||||
{ e_immediate (s.string(), v.string() );
|
||||
e_export( s.string() );
|
||||
s.release_this(); v.release_this(); }
|
||||
statement ::= EXPORT variable(s) OP_COND STRING(v).
|
||||
{ e_cond( s.string(), v.string() );
|
||||
s.release_this(); v.release_this(); }
|
||||
|
||||
statement ::= variable(s) OP_ASSIGN STRING(v).
|
||||
{ e_assign( s.string(), v.string() );
|
||||
s.release_this(); v.release_this(); }
|
||||
statement ::= variable(s) OP_PREPEND STRING(v).
|
||||
{ e_prepend( s.string(), v.string() );
|
||||
s.release_this(); v.release_this(); }
|
||||
statement ::= variable(s) OP_APPEND STRING(v).
|
||||
{ e_append( s.string() , v.string() );
|
||||
s.release_this(); v.release_this(); }
|
||||
statement ::= variable(s) OP_IMMEDIATE STRING(v).
|
||||
{ e_immediate( s.string(), v.string() );
|
||||
s.release_this(); v.release_this(); }
|
||||
statement ::= variable(s) OP_COND STRING(v).
|
||||
{ e_cond( s.string(), v.string() );
|
||||
s.release_this(); v.release_this(); }
|
||||
|
||||
task ::= TSYMBOL(t) BEFORE TSYMBOL(b) AFTER TSYMBOL(a).
|
||||
{ e_addtask( t.string(), b.string(), a.string() );
|
||||
t.release_this(); b.release_this(); a.release_this(); }
|
||||
task ::= TSYMBOL(t) AFTER TSYMBOL(a) BEFORE TSYMBOL(b).
|
||||
{ e_addtask( t.string(), b.string(), a.string());
|
||||
t.release_this(); a.release_this(); b.release_this(); }
|
||||
task ::= TSYMBOL(t).
|
||||
{ e_addtask( t.string(), NULL, NULL);
|
||||
t.release_this();}
|
||||
task ::= TSYMBOL(t) BEFORE TSYMBOL(b).
|
||||
{ e_addtask( t.string(), b.string(), NULL);
|
||||
t.release_this(); b.release_this(); }
|
||||
task ::= TSYMBOL(t) AFTER TSYMBOL(a).
|
||||
{ e_addtask( t.string(), NULL, a.string());
|
||||
t.release_this(); a.release_this(); }
|
||||
tasks ::= tasks task.
|
||||
tasks ::= task.
|
||||
statement ::= ADDTASK tasks.
|
||||
|
||||
statement ::= ADDHANDLER SYMBOL(s).
|
||||
{ e_addhandler( s.string()); s.release_this (); }
|
||||
|
||||
func ::= FSYMBOL(f). { e_export_func(f.string()); f.release_this(); }
|
||||
funcs ::= funcs func.
|
||||
funcs ::= func.
|
||||
statement ::= EXPORT_FUNC funcs.
|
||||
|
||||
inherit ::= ISYMBOL(i). { e_inherit(i.string() ); i.release_this (); }
|
||||
inherits ::= inherits inherit.
|
||||
inherits ::= inherit.
|
||||
statement ::= INHERIT inherits.
|
||||
|
||||
statement ::= INCLUDE ISYMBOL(i).
|
||||
{ e_include(i.string() ); i.release_this(); }
|
||||
|
||||
proc_body(r) ::= proc_body(l) PROC_BODY(b).
|
||||
{ /* concatenate body lines */
|
||||
r.assignString( token_t::concatString(l.string(), b.string()) );
|
||||
l.release_this ();
|
||||
b.release_this ();
|
||||
}
|
||||
proc_body(b) ::= . { b.assignString(0); }
|
||||
statement ::= variable(p) PROC_OPEN proc_body(b) PROC_CLOSE.
|
||||
{ e_proc( p.string(), b.string() );
|
||||
p.release_this(); b.release_this(); }
|
||||
statement ::= PYTHON SYMBOL(p) PROC_OPEN proc_body(b) PROC_CLOSE.
|
||||
{ e_proc_python (p.string(), b.string() );
|
||||
p.release_this(); b.release_this(); }
|
||||
statement ::= PYTHON PROC_OPEN proc_body(b) PROC_CLOSE.
|
||||
{ e_proc_python( NULL, b.string());
|
||||
b.release_this (); }
|
||||
|
||||
statement ::= FAKEROOT SYMBOL(p) PROC_OPEN proc_body(b) PROC_CLOSE.
|
||||
{ e_proc_fakeroot(p.string(), b.string() );
|
||||
p.release_this (); b.release_this (); }
|
||||
|
||||
def_body(r) ::= def_body(l) DEF_BODY(b).
|
||||
{ /* concatenate body lines */
|
||||
r.assignString( token_t::concatString(l.string(), b.string());
|
||||
l.release_this (); b.release_this ();
|
||||
}
|
||||
def_body(b) ::= . { b.sz = 0; }
|
||||
statement ::= SYMBOL(p) DEF_ARGS(a) def_body(b).
|
||||
{ e_def( p.string(), a.string(), b.string());
|
||||
p.release_this(); a.release_this(); b.release_this(); }
|
||||
|
||||
@@ -0,0 +1,41 @@
|
||||
/*
|
||||
Copyright (C) 2005 Holger Hans Peter Freyther
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
|
||||
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
||||
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
||||
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
|
||||
THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
||||
*/
|
||||
|
||||
#ifndef LEXER_H
|
||||
#define LEXER_H
|
||||
|
||||
struct lex_t {
|
||||
void *parser;
|
||||
void *scanner;
|
||||
void* (*parse)(void*, int, token_t, lex_t*);
|
||||
|
||||
void accept(int token, const char* string = 0);
|
||||
void input(char *buf, int *result, int_max_size);
|
||||
int line()const;
|
||||
const char* filename()const;
|
||||
private:
|
||||
const char* m_fileName;
|
||||
};
|
||||
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,83 @@
|
||||
/*
|
||||
Copyright (C) 2005 Holger Hans Peter Freyther
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
|
||||
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
||||
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
||||
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
|
||||
THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
||||
*/
|
||||
|
||||
#ifndef TOKEN_H
|
||||
#define TOKEN_H
|
||||
|
||||
#define PURE_METHOD
|
||||
|
||||
struct token_t {
|
||||
const char* string()const PURE_METHOD;
|
||||
|
||||
static char* concatString(const char* l, const char* r);
|
||||
void assignString(const char* str);
|
||||
void copyString(const char* str);
|
||||
|
||||
void release_this();
|
||||
|
||||
private:
|
||||
char *m_string;
|
||||
size_t m_stringLen;
|
||||
};
|
||||
|
||||
inline const char* token_t::string()const
|
||||
{
|
||||
return m_string;
|
||||
}
|
||||
|
||||
/*
|
||||
* append str to the current string
|
||||
*/
|
||||
inline char* token_t::concatString(const char* l, const char* r)
|
||||
{
|
||||
size_t cb = (l ? strlen (l) : 0) + strlen (r) + 1;
|
||||
r_sz = new char[cb];
|
||||
*r_sz = 0;
|
||||
if (l) strcat (r_sz, l);
|
||||
strcat (r_sz, r);
|
||||
|
||||
return r_sz;
|
||||
}
|
||||
|
||||
inline void token_t::assignString(const char* str)
|
||||
{
|
||||
m_string = str;
|
||||
m_stringLen = str ? strlen(str) : 0;
|
||||
}
|
||||
|
||||
inline void token_t::copyString(const char* str)
|
||||
{
|
||||
if( str ) {
|
||||
m_stringLen = strlen(str);
|
||||
m_string = new char[m_stringLen+1];
|
||||
strcpy(m_string, str)
|
||||
}
|
||||
}
|
||||
|
||||
inline void token_t::release_this()
|
||||
{
|
||||
delete m_string;
|
||||
m_string = 0;
|
||||
}
|
||||
|
||||
#endif
|
||||
Reference in New Issue
Block a user