162 lines
5.7 KiB
Plaintext
162 lines
5.7 KiB
Plaintext
/* bbp.lemon
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written by Marc Singer
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6 January 2005
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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DESCRIPTION
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-----------
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lemon parser specification file for a BitBake input file parser.
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Most of the interesting shenanigans are done in the lexer. The
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BitBake grammar is not regular. In order to emit tokens that
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the parser can properly interpret in LALR fashion, the lexer
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manages the interpretation state. This is why there are ISYMBOLs,
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SYMBOLS, and TSYMBOLS.
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This parser was developed by reading the limited available
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documentation for BitBake and by analyzing the available BB files.
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There is no assertion of correctness to be made about this parser.
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*/
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%token_type {token_t}
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%name bbparse
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%token_prefix T_
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%extra_argument {lex_t* lex}
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%include {
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#include "token.h"
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}
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%token_destructor { $$.release_this (); }
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%syntax_error { printf ("%s:%d: syntax error\n",
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lex->filename (), lex->line ()); }
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program ::= statements.
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statements ::= statements statement.
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statements ::= .
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variable(r) ::= SYMBOL(s).
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{ r.assignString( s.string() );
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s.assignString( 0 );
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s.release_this(); }
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variable(r) ::= VARIABLE(v).
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{
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r.assignString( v.string() );
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v.assignString( 0 );
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v.release_this(); }
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statement ::= EXPORT variable(s) OP_ASSIGN STRING(v).
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{ e_assign( s.string(), v.string() );
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e_export( s.string() );
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s.release_this(); v.release_this(); }
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statement ::= EXPORT variable(s) OP_IMMEDIATE STRING(v).
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{ e_immediate (s.string(), v.string() );
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e_export( s.string() );
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s.release_this(); v.release_this(); }
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statement ::= EXPORT variable(s) OP_COND STRING(v).
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{ e_cond( s.string(), v.string() );
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s.release_this(); v.release_this(); }
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statement ::= variable(s) OP_ASSIGN STRING(v).
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{ e_assign( s.string(), v.string() );
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s.release_this(); v.release_this(); }
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statement ::= variable(s) OP_PREPEND STRING(v).
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{ e_prepend( s.string(), v.string() );
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s.release_this(); v.release_this(); }
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statement ::= variable(s) OP_APPEND STRING(v).
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{ e_append( s.string() , v.string() );
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s.release_this(); v.release_this(); }
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statement ::= variable(s) OP_IMMEDIATE STRING(v).
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{ e_immediate( s.string(), v.string() );
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s.release_this(); v.release_this(); }
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statement ::= variable(s) OP_COND STRING(v).
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{ e_cond( s.string(), v.string() );
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s.release_this(); v.release_this(); }
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task ::= TSYMBOL(t) BEFORE TSYMBOL(b) AFTER TSYMBOL(a).
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{ e_addtask( t.string(), b.string(), a.string() );
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t.release_this(); b.release_this(); a.release_this(); }
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task ::= TSYMBOL(t) AFTER TSYMBOL(a) BEFORE TSYMBOL(b).
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{ e_addtask( t.string(), b.string(), a.string());
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t.release_this(); a.release_this(); b.release_this(); }
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task ::= TSYMBOL(t).
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{ e_addtask( t.string(), NULL, NULL);
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t.release_this();}
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task ::= TSYMBOL(t) BEFORE TSYMBOL(b).
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{ e_addtask( t.string(), b.string(), NULL);
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t.release_this(); b.release_this(); }
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task ::= TSYMBOL(t) AFTER TSYMBOL(a).
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{ e_addtask( t.string(), NULL, a.string());
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t.release_this(); a.release_this(); }
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tasks ::= tasks task.
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tasks ::= task.
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statement ::= ADDTASK tasks.
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statement ::= ADDHANDLER SYMBOL(s).
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{ e_addhandler( s.string()); s.release_this (); }
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func ::= FSYMBOL(f). { e_export_func(f.string()); f.release_this(); }
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funcs ::= funcs func.
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funcs ::= func.
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statement ::= EXPORT_FUNC funcs.
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inherit ::= ISYMBOL(i). { e_inherit(i.string() ); i.release_this (); }
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inherits ::= inherits inherit.
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inherits ::= inherit.
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statement ::= INHERIT inherits.
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statement ::= INCLUDE ISYMBOL(i).
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{ e_include(i.string() ); i.release_this(); }
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proc_body(r) ::= proc_body(l) PROC_BODY(b).
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{ /* concatenate body lines */
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r.assignString( token_t::concatString(l.string(), b.string()) );
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l.release_this ();
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b.release_this ();
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}
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proc_body(b) ::= . { b.assignString(0); }
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statement ::= variable(p) PROC_OPEN proc_body(b) PROC_CLOSE.
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{ e_proc( p.string(), b.string() );
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p.release_this(); b.release_this(); }
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statement ::= PYTHON SYMBOL(p) PROC_OPEN proc_body(b) PROC_CLOSE.
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{ e_proc_python (p.string(), b.string() );
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p.release_this(); b.release_this(); }
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statement ::= PYTHON PROC_OPEN proc_body(b) PROC_CLOSE.
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{ e_proc_python( NULL, b.string());
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b.release_this (); }
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statement ::= FAKEROOT SYMBOL(p) PROC_OPEN proc_body(b) PROC_CLOSE.
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{ e_proc_fakeroot(p.string(), b.string() );
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p.release_this (); b.release_this (); }
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def_body(r) ::= def_body(l) DEF_BODY(b).
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{ /* concatenate body lines */
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r.assignString( token_t::concatString(l.string(), b.string());
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l.release_this (); b.release_this ();
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}
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def_body(b) ::= . { b.sz = 0; }
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statement ::= SYMBOL(p) DEF_ARGS(a) def_body(b).
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{ e_def( p.string(), a.string(), b.string());
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p.release_this(); a.release_this(); b.release_this(); }
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