/*
gml.y -- GML parser - LEMON config
version 2.4, 2011 June 3
Author: Sandro Furieri a.furieri@lqt.it
------------------------------------------------------------------------------
Version: MPL 1.1/GPL 2.0/LGPL 2.1
The contents of this file are subject to the Mozilla Public License Version
1.1 (the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/
Software distributed under the License is distributed on an "AS IS" basis,
WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
for the specific language governing rights and limitations under the
License.
The Original Code is the SpatiaLite library
The Initial Developer of the Original Code is Alessandro Furieri
Portions created by the Initial Developer are Copyright (C) 2011
the Initial Developer. All Rights Reserved.
Alternatively, the contents of this file may be used under the terms of
either the GNU General Public License Version 2 or later (the "GPL"), or
the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
in which case the provisions of the GPL or the LGPL are applicable instead
of those above. If you wish to allow use of your version of this file only
under the terms of either the GPL or the LGPL, and not to allow others to
use your version of this file under the terms of the MPL, indicate your
decision by deleting the provisions above and replace them with the notice
and other provisions required by the GPL or the LGPL. If you do not delete
the provisions above, a recipient may use your version of this file under
the terms of any one of the MPL, the GPL or the LGPL.
*/
// Tokens are void pointers (so we can cast them to whatever we want)
%token_type {void *}
// Output to stderr when stack overflows
%stack_overflow {
spatialite_e( "Giving up. Parser stack overflow\n");
}
// Increase this number if necessary
%stack_size 1000000
// Header files to be included in gml.c
%include {
}
// Set the return value of gaiaParseGML in the following pointer:
%extra_argument { struct gml_data *p_data }
// Invalid syntax (ie. no rules matched)
%syntax_error {
/*
** when the LEMON parser encounters an error
** then this global variable is set
*/
p_data->gml_parse_error = 1;
p_data->result = NULL;
}
/* This is to terminate with a new line */
main ::= in.
in ::= .
in ::= in state GML_NEWLINE.
state ::= program.
/*
* program is the start node.
*/
program ::= gml_tree.
// GML node:
gml_tree ::= node(N). { p_data->result = N; } // N is a GML node
gml_tree ::= node_chain(C). { p_data->result = C; } // C is a chain of GML nodes
// syntax for a GML node object:
node(N) ::= open_tag(K) GML_END GML_CLOSE.
{ N = gml_createSelfClosedNode( p_data, (void *)K, NULL); }
node(N) ::= open_tag(K) attr(A) GML_END GML_CLOSE.
{ N = gml_createSelfClosedNode( p_data, (void *)K, (void *)A); }
node(N) ::= open_tag(K) attributes(A) GML_END GML_CLOSE.
{ N = gml_createSelfClosedNode( p_data, (void *)K, (void *)A); }
node(N) ::= open_tag(K) GML_CLOSE.
{ N = gml_createNode( p_data, (void *)K, NULL, NULL); }
node(N) ::= open_tag(K) attr(A) GML_CLOSE.
{ N = gml_createNode( p_data, (void *)K, (void *)A, NULL); }
node(N) ::= open_tag(K) attributes(A) GML_CLOSE.
{ N = gml_createNode( p_data, (void *)K, (void *)A, NULL); }
node(N) ::= open_tag(K) GML_CLOSE coord(C).
{ N = gml_createNode( p_data, (void *)K, NULL, (void *)C); }
node(N) ::= open_tag(K) GML_CLOSE coord_chain(C).
{ N = gml_createNode( p_data, (void *)K, NULL, (void *)C); }
node(N) ::= open_tag(K) attr(A) GML_CLOSE coord(C).
{ N = gml_createNode( p_data, (void *)K, (void *)A, (void *)C); }
node(N) ::= open_tag(K) attr(A) GML_CLOSE coord_chain(C).
{ N = gml_createNode( p_data, (void *)K, (void *)A, (void *)C); }
node(N) ::= open_tag(K) attributes(A) GML_CLOSE coord(C).
{ N = gml_createNode( p_data, (void *)K, (void *)A, (void *)C); }
node(N) ::= open_tag(K) attributes(A) GML_CLOSE coord_chain(C).
{ N = gml_createNode( p_data, (void *)K, (void *)A, (void *)C); }
node(N) ::= close_tag(K).
{ N = gml_closingNode( p_data, (void *)K); }
// syntax for a GML tag object:
open_tag(T) ::= GML_OPEN keyword(K). { T = K; }
close_tag(T) ::= GML_OPEN GML_END keyword(K) GML_CLOSE. { T = K; }
// Keyword.
keyword(A) ::= GML_KEYWORD(B). { A = B; }
// Rules to match an infinite number of GML nodes:
// Also links the generated gmlNodePtrs together
extra_nodes(A) ::= . { A = NULL; }
extra_nodes(A) ::= node(P) extra_nodes(B).
{ ((gmlNodePtr)P)->Next = (gmlNodePtr)B; A = P; }
// a chain can contain any number of GML Nodes (but at least two):
node_chain(C) ::= node(A) node(B) extra_nodes(Q).
{
((gmlNodePtr)B)->Next = (gmlNodePtr)Q;
((gmlNodePtr)A)->Next = (gmlNodePtr)B;
C = A;
}
// syntax for a GML attribute:
attr(A) ::= GML_KEYWORD(K) GML_EQ GML_VALUE(V).
{ A = gml_attribute( p_data, (void *)K, (void *)V); }
// Rules to match an infinite number of GML attributes:
// Also links the generated gmlAttrPtrs together
extra_attr(A) ::= . { A = NULL; }
extra_attr(A) ::= attr(P) extra_attr(B).
{ ((gmlAttrPtr)P)->Next = (gmlAttrPtr)B; A = P; }
// a chain can contain any number of GML Attributes (but at least two):
attributes(C) ::= attr(A) attr(B) extra_attr(Q).
{
((gmlAttrPtr)B)->Next = (gmlAttrPtr)Q;
((gmlAttrPtr)A)->Next = (gmlAttrPtr)B;
C = A;
}
// syntax for a GML coordinate:
coord(C) ::= GML_COORD(V).
{ C = gml_coord( p_data, (void *)V); }
// Rules to match an infinite number of GML coords:
// Also links the generated gmlCoordPtrs together
extra_coord(A) ::= . { A = NULL; }
extra_coord(A) ::= coord(P) extra_coord(B).
{ ((gmlCoordPtr)P)->Next = (gmlCoordPtr)B; A = P; }
// a chain can contain any number of GML Coordinates (but at least two):
coord_chain(C) ::= coord(A) coord(B) extra_coord(Q).
{
((gmlCoordPtr)B)->Next = (gmlCoordPtr)Q;
((gmlCoordPtr)A)->Next = (gmlCoordPtr)B;
C = A;
}