X-Git-Url: http://andersk.mit.edu/gitweb/libyaml.git/blobdiff_plain/0174ed6e0abc4b9316a91d32163f2507a31d29fb..677348a9619dfec1b64c3ef17f746b6811c195ee:/src/scanner.c

diff --git a/src/scanner.c b/src/scanner.c
index f77e86a..8817de2 100644
--- a/src/scanner.c
+++ b/src/scanner.c
@@ -615,11 +615,11 @@ yaml_parser_decrease_flow_level(yaml_parser_t *parser);
  */
 
 static int
-yaml_parser_roll_indent(yaml_parser_t *parser, int column,
-        int number, yaml_token_type_t type, yaml_mark_t mark);
+yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column,
+        ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark);
 
 static int
-yaml_parser_unroll_indent(yaml_parser_t *parser, int column);
+yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column);
 
 /*
  * Token fetchers.
@@ -1078,7 +1078,7 @@ yaml_parser_stale_simple_keys(yaml_parser_t *parser)
             if (simple_key->required) {
                 return yaml_parser_set_scanner_error(parser,
                         "while scanning a simple key", simple_key->mark,
-                        "could not found expected ':'");
+                        "could not find expected ':'");
             }
 
             simple_key->possible = 0;
@@ -1103,7 +1103,7 @@ yaml_parser_save_simple_key(yaml_parser_t *parser)
      */
 
     int required = (!parser->flow_level
-            && parser->indent == (int)parser->mark.column);
+            && parser->indent == (ptrdiff_t)parser->mark.column);
 
     /*
      * A simple key is required only when it is the first token in the current
@@ -1118,9 +1118,11 @@ yaml_parser_save_simple_key(yaml_parser_t *parser)
 
     if (parser->simple_key_allowed)
     {
-        yaml_simple_key_t simple_key = { 1, required,
-            parser->tokens_parsed + parser->tokens.tail - parser->tokens.head,
-            { 0, 0, 0 } };
+        yaml_simple_key_t simple_key;
+        simple_key.possible = 1;
+        simple_key.required = required;
+        simple_key.token_number = 
+            parser->tokens_parsed + (parser->tokens.tail - parser->tokens.head);
         simple_key.mark = parser->mark;
 
         if (!yaml_parser_remove_simple_key(parser)) return 0;
@@ -1147,7 +1149,7 @@ yaml_parser_remove_simple_key(yaml_parser_t *parser)
         if (simple_key->required) {
             return yaml_parser_set_scanner_error(parser,
                     "while scanning a simple key", simple_key->mark,
-                    "could not found expected ':'");
+                    "could not find expected ':'");
         }
     }
 
@@ -1174,6 +1176,11 @@ yaml_parser_increase_flow_level(yaml_parser_t *parser)
 
     /* Increase the flow level. */
 
+    if (parser->flow_level == INT_MAX) {
+        parser->error = YAML_MEMORY_ERROR;
+        return 0;
+    }
+
     parser->flow_level++;
 
     return 1;
@@ -1186,9 +1193,11 @@ yaml_parser_increase_flow_level(yaml_parser_t *parser)
 static int
 yaml_parser_decrease_flow_level(yaml_parser_t *parser)
 {
+    yaml_simple_key_t dummy_key;    /* Used to eliminate a compiler warning. */
+
     if (parser->flow_level) {
         parser->flow_level --;
-        POP(parser, parser->simple_keys);
+        dummy_key = POP(parser, parser->simple_keys);
     }
 
     return 1;
@@ -1202,8 +1211,8 @@ yaml_parser_decrease_flow_level(yaml_parser_t *parser)
  */
 
 static int
-yaml_parser_roll_indent(yaml_parser_t *parser, int column,
-        int number, yaml_token_type_t type, yaml_mark_t mark)
+yaml_parser_roll_indent(yaml_parser_t *parser, ptrdiff_t column,
+        ptrdiff_t number, yaml_token_type_t type, yaml_mark_t mark)
 {
     yaml_token_t token;
 
@@ -1222,6 +1231,11 @@ yaml_parser_roll_indent(yaml_parser_t *parser, int column,
         if (!PUSH(parser, parser->indents, parser->indent))
             return 0;
 
+        if (column > INT_MAX) {
+            parser->error = YAML_MEMORY_ERROR;
+            return 0;
+        }
+
         parser->indent = column;
 
         /* Create a token and insert it into the queue. */
@@ -1250,7 +1264,7 @@ yaml_parser_roll_indent(yaml_parser_t *parser, int column,
 
 
 static int
-yaml_parser_unroll_indent(yaml_parser_t *parser, int column)
+yaml_parser_unroll_indent(yaml_parser_t *parser, ptrdiff_t column)
 {
     yaml_token_t token;
 
@@ -2070,7 +2084,7 @@ yaml_parser_scan_directive(yaml_parser_t *parser, yaml_token_t *token)
 
     if (!IS_BREAKZ(parser->buffer)) {
         yaml_parser_set_scanner_error(parser, "while scanning a directive",
-                start_mark, "did not found expected comment or line break");
+                start_mark, "did not find expected comment or line break");
         goto error;
     }
 
@@ -2124,7 +2138,7 @@ yaml_parser_scan_directive_name(yaml_parser_t *parser,
 
     if (string.start == string.pointer) {
         yaml_parser_set_scanner_error(parser, "while scanning a directive",
-                start_mark, "cannot found expected directive name");
+                start_mark, "could not find expected directive name");
         goto error;
     }
 
@@ -2470,7 +2484,7 @@ yaml_parser_scan_tag(yaml_parser_t *parser, yaml_token_t *token)
 
     if (!IS_BLANKZ(parser->buffer)) {
         yaml_parser_set_scanner_error(parser, "while scanning a tag",
-                start_mark, "did not found expected whitespace or line break");
+                start_mark, "did not find expected whitespace or line break");
         goto error;
     }
 
@@ -2570,7 +2584,7 @@ yaml_parser_scan_tag_uri(yaml_parser_t *parser, int directive,
 
     /* Resize the string to include the head. */
 
-    while (string.end - string.start <= (int)length) {
+    while ((size_t)(string.end - string.start) <= length) {
         if (!yaml_string_extend(&string.start, &string.pointer, &string.end)) {
             parser->error = YAML_MEMORY_ERROR;
             goto error;
@@ -2824,7 +2838,7 @@ yaml_parser_scan_block_scalar(yaml_parser_t *parser, yaml_token_t *token,
 
     if (!IS_BREAKZ(parser->buffer)) {
         yaml_parser_set_scanner_error(parser, "while scanning a block scalar",
-                start_mark, "did not found expected comment or line break");
+                start_mark, "did not find expected comment or line break");
         goto error;
     }