Index: trunk/src_plugins/order/constraint.c
===================================================================
--- trunk/src_plugins/order/constraint.c	(revision 36856)
+++ trunk/src_plugins/order/constraint.c	(revision 36857)
@@ -1,5 +1,59 @@
+#include "config.h"
+#include <stdlib.h>
 #include "const_gram.h"
 #include "constraint.h"
+#include "const_gram.h"
+#include "const_lex.h"
 
 /* Error is handled on the push side */
 void pcb_ordc_error(pcb_ordc_ctx_t *ctx, pcb_ordc_STYPE tok, const char *s) { }
+
+int pcb_ordc_parse_verbose = 0;
+
+int pcb_ordc_parse_str(pcb_ordc_ctx_t *ctx, const char *script)
+{
+	pcb_ordc_yyctx_t yyctx;
+	pcb_ordc_ctx_t octx;
+	pcb_ordc_STYPE lval;
+	pcb_ordc_ureglex_t lctx;
+	int tok, yres;
+
+	pcb_ordc_lex_init(&lctx, pcb_ordc_rules);
+	pcb_ordc_parse_init(&yyctx);
+
+	/* read all bytes of the binary file */
+	for(;*script != '\0';script++) {
+		/* feed the lexer */
+		if (pcb_ordc_parse_verbose) printf("in: '%c'\n", *script);
+		tok = pcb_ordc_lex_char(&lctx, &lval, *script);
+		if (tok == UREGLEX_MORE)
+			continue;
+		if (pcb_ordc_parse_verbose) printf(" tok=%d\n", tok);
+
+
+		/* feed the grammar */
+		lval.line = lctx.loc_line[0];
+		lval.first_col = lctx.loc_col[0];
+		yres = pcb_ordc_parse(&yyctx, &octx, tok, &lval);
+
+		if (pcb_ordc_parse_verbose) printf("  yy=%d\n", yres);
+
+#if 0
+		/* see io_bxl */
+		if ((octx.in_error) && ((tok == T_ID) || (tok == T_QSTR)))
+			free(lval.un.s);
+#endif
+
+		if (yres != 0) {
+			fprintf(stderr, "order constraint script syntax error at %ld:%ld\n", lval.line, lval.first_col);
+			goto error;
+		}
+		pcb_ordc_lex_reset(&lctx); /* prepare for the next token */
+	}
+
+	return 0;
+
+	error:;
+TODO("free octx tree");
+	return -1;
+}
Index: trunk/src_plugins/order/constraint.h
===================================================================
--- trunk/src_plugins/order/constraint.h	(revision 36856)
+++ trunk/src_plugins/order/constraint.h	(revision 36857)
@@ -14,6 +14,8 @@
 	PCB_ORDC_NEQ,
 	PCB_ORDC_GE,
 	PCB_ORDC_LE,
+	PCB_ORDC_GT,
+	PCB_ORDC_LT,
 	PCB_ORDC_ADD,
 	PCB_ORDC_SUB
 } pcb_ordc_node_type_t;
@@ -38,4 +40,7 @@
 	pcb_ordc_node_t *root;
 } pcb_ordc_ctx_t;
 
+int pcb_ordc_parse_str(pcb_ordc_ctx_t *ctx, const char *script);
+
+
 #endif