--- parser3/src/main/pa_string.C	2001/02/11 11:27:25	1.17
+++ parser3/src/main/pa_string.C	2001/02/13 10:50:23	1.22
@@ -1,5 +1,5 @@
 /*
-  $Id: pa_string.C,v 1.17 2001/02/11 11:27:25 paf Exp $
+  $Id: pa_string.C,v 1.22 2001/02/13 10:50:23 paf Exp $
 */
 
 #include <string.h>
@@ -7,6 +7,9 @@
 #include "pa_pool.h"
 #include "pa_string.h"
 #include "pa_hash.h"
+#include "pa_exception.h"
+
+// String
 
 String::String(Pool& apool) :
 	Pooled(apool) {
@@ -204,3 +207,115 @@ bool String::operator == (const String&
 	}
 	return a_break==b_break;
 }
+
+String& String::append(const String_iterator& begin, const String_iterator& end) {
+	//TODO
+	return *this;
+}
+
+// Char_types
+
+Char_types::Char_types() {
+	memset(types, 0, sizeof(types));
+}
+
+// String_iterator 
+
+String_iterator::String_iterator(String& astring) :	string(astring) {
+	read_here=string.head.rows;
+	position=string.size()==0?0:read_here->item.ptr;
+	link_row=reinterpret_cast<String::Chunk::Row*>(string.head.preallocated_link);
+}
+
+char String_iterator::operator()() const {
+	return position?*position:0;
+}
+
+void String_iterator::skip() {
+	if(!position)
+		return;
+
+	if(++position==
+		read_here->item.ptr+
+		read_here->item.size) {
+
+		// next row
+		if(++read_here==string.append_here) {
+			position=0;
+			return;
+		}
+		if(read_here==link_row) {
+			String::Chunk *chunk=link_row->link;
+			if(!chunk)
+				string.pool.exception().raise(0, 0,
+					&string,
+					"String_iterator::skip() missed "
+					"read_here==string.append_here check");
+
+			read_here=chunk->rows;
+			link_row=&chunk->rows[chunk->count];
+		}
+		position=read_here->item.ptr;
+	}
+}
+
+bool String_iterator::skip_to(char c) {
+	if(!position)
+		return false;
+
+	while(true) {
+		if(char *found=static_cast<char *>(
+			memchr(position, c, read_here->item.size-(position-read_here->item.ptr)))) {
+			position=found;
+			return true;
+		}
+
+		// next row
+		if(++read_here==string.append_here) {
+			position=0;
+			return false;
+		}
+		if(read_here==link_row) {
+			String::Chunk *chunk=link_row->link;
+			if(!chunk)
+				string.pool.exception().raise(0, 0,
+					&string,
+					"String_iterator::skip_to(char) missed "
+					"read_here==string.append_here check");
+
+			read_here=chunk->rows;
+			link_row=&chunk->rows[chunk->count];
+		}
+		position=read_here->item.ptr;
+	}
+}
+
+int String_iterator::skip_to(Char_types& types) {
+	if(!position)
+		return false;
+
+	while(true) {
+		int countdown=read_here->item.size-(position-read_here->item.ptr);
+		for(; countdown--; position++)
+			if(int type=types.get(*position))
+				return type;
+
+		// next row
+		if(++read_here==string.append_here) {
+			position=0;
+			return -1;
+		}
+		if(read_here==link_row) {
+			String::Chunk *chunk=link_row->link;
+			if(!chunk)
+				string.pool.exception().raise(0, 0,
+					&string,
+					"String_iterator::skip_to(Char_type) missed "
+					"read_here==string.append_here check");
+
+			read_here=chunk->rows;
+			link_row=&chunk->rows[chunk->count];
+		}
+		position=read_here->item.ptr;
+	}
+}