Make json_error_t transparent again

[jansson.git] / src / load.c

diff --git a/src/load.c b/src/load.c
index 53241ff..925a850 100644 (file)
--- a/src/load.c
+++ b/src/load.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009 Petri Lehtinen <petri@digip.org>
+ * Copyright (c) 2009, 2010 Petri Lehtinen <petri@digip.org>
  *
  * Jansson is free software; you can redistribute it and/or modify
  * it under the terms of the MIT license. See LICENSE for details.
@@ -52,7 +52,7 @@ typedef struct {
     int line, column;
     union {
         char *string;
-        int integer;
+        json_int_t integer;
         double real;
     } value;
 } lex_t;
@@ -113,7 +113,8 @@ static void error_set(json_error_t *error, const lex_t *lex,
 
 /*** lexical analyzer ***/
 
-void stream_init(stream_t *stream, get_func get, eof_func eof, void *data)
+static void
+stream_init(stream_t *stream, get_func get, eof_func eof, void *data)
 {
     stream->get = get;
     stream->eof = eof;
@@ -148,7 +149,7 @@ static char stream_get(stream_t *stream, json_error_t *error)
             for(i = 1; i < count; i++)
                 stream->buffer[i] = stream->get(stream->data);
 
-            if(!utf8_check_full(stream->buffer, count))
+            if(!utf8_check_full(stream->buffer, count, NULL))
                 goto out;
 
             stream->stream_pos += count;
@@ -221,10 +222,10 @@ static void lex_save_cached(lex_t *lex)
 }
 
 /* assumes that str points to 'u' plus at least 4 valid hex digits */
-static int decode_unicode_escape(const char *str)
+static int32_t decode_unicode_escape(const char *str)
 {
     int i;
-    int value = 0;
+    int32_t value = 0;
 
     assert(str[0] == 'u');
 
@@ -325,7 +326,7 @@ static void lex_scan_string(lex_t *lex, json_error_t *error)
             if(*p == 'u') {
                 char buffer[4];
                 int length;
-                int value;
+                int32_t value;
 
                 value = decode_unicode_escape(p);
                 p += 5;
@@ -333,7 +334,7 @@ static void lex_scan_string(lex_t *lex, json_error_t *error)
                 if(0xD800 <= value && value <= 0xDBFF) {
                     /* surrogate pair */
                     if(*p == '\\' && *(p + 1) == 'u') {
-                        int value2 = decode_unicode_escape(++p);
+                        int32_t value2 = decode_unicode_escape(++p);
                         p += 5;
 
                         if(0xDC00 <= value2 && value2 <= 0xDFFF) {
@@ -400,6 +401,12 @@ out:
     free(lex->value.string);
 }
 
+#if JSON_INTEGER_IS_LONG_LONG
+#define json_strtoint     strtoll
+#else
+#define json_strtoint     strtol
+#endif
+
 static int lex_scan_number(lex_t *lex, char c, json_error_t *error)
 {
     const char *saved_text;
@@ -418,32 +425,37 @@ static int lex_scan_number(lex_t *lex, char c, json_error_t *error)
             goto out;
         }
     }
-    else /* c != '0' */ {
+    else if(isdigit(c)) {
         c = lex_get_save(lex, error);
         while(isdigit(c))
             c = lex_get_save(lex, error);
     }
+    else {
+      lex_unget_unsave(lex, c);
+      goto out;
+    }
 
     if(c != '.' && c != 'E' && c != 'e') {
-        long value;
+        json_int_t value;
 
         lex_unget_unsave(lex, c);
 
         saved_text = strbuffer_value(&lex->saved_text);
-        value = strtol(saved_text, &end, 10);
-        assert(end == saved_text + lex->saved_text.length);
 
-        if((value == LONG_MAX && errno == ERANGE) || value > INT_MAX) {
-            error_set(error, lex, "too big integer");
-            goto out;
-        }
-        else if((value == LONG_MIN && errno == ERANGE) || value < INT_MIN) {
-            error_set(error, lex, "too big negative integer");
+        errno = 0;
+        value = json_strtoint(saved_text, &end, 10);
+        if(errno == ERANGE) {
+            if(value < 0)
+                error_set(error, lex, "too big negative integer");
+            else
+                error_set(error, lex, "too big integer");
             goto out;
         }
 
+        assert(end == saved_text + lex->saved_text.length);
+
         lex->token = TOKEN_INTEGER;
-        lex->value.integer = (int)value;
+        lex->value.integer = value;
         return 0;
     }
 
@@ -479,14 +491,7 @@ static int lex_scan_number(lex_t *lex, char c, json_error_t *error)
     value = strtod(saved_text, &end);
     assert(end == saved_text + lex->saved_text.length);
 
-    if(value == 0 && errno == ERANGE) {
-        error_set(error, lex, "real number underflow");
-        goto out;
-    }
-
-    /* Cannot test for +/-HUGE_VAL because the HUGE_VAL constant is
-       only defined in C99 mode. So let's trust in sole errno. */
-    else if(errno == ERANGE) {
+    if(errno == ERANGE && value != 0) {
         error_set(error, lex, "real number overflow");
         goto out;
     }
@@ -767,7 +772,7 @@ static json_t *parse_value(lex_t *lex, json_error_t *error)
     return json;
 }
 
-json_t *parse_json(lex_t *lex, json_error_t *error)
+static json_t *parse_json(lex_t *lex, json_error_t *error)
 {
     error_init(error);
 
@@ -806,15 +811,13 @@ static int string_eof(void *data)
     return (stream->data[stream->pos] == '\0');
 }
 
-json_t *json_loads(const char *string, json_error_t *error)
+json_t *json_loads(const char *string, size_t flags, json_error_t *error)
 {
     lex_t lex;
     json_t *result;
+    (void)flags; /* unused */
 
-    string_data_t stream_data = {
-        .data = string,
-        .pos = 0
-    };
+    string_data_t stream_data = {string, 0};
 
     if(lex_init(&lex, string_get, string_eof, (void *)&stream_data))
         return NULL;
@@ -835,10 +838,11 @@ out:
     return result;
 }
 
-json_t *json_loadf(FILE *input, json_error_t *error)
+json_t *json_loadf(FILE *input, size_t flags, json_error_t *error)
 {
     lex_t lex;
     json_t *result;
+    (void)flags; /* unused */
 
     if(lex_init(&lex, (get_func)fgetc, (eof_func)feof, input))
         return NULL;
@@ -859,7 +863,7 @@ out:
     return result;
 }
 
-json_t *json_load_file(const char *path, json_error_t *error)
+json_t *json_load_file(const char *path, size_t flags, json_error_t *error)
 {
     json_t *result;
     FILE *fp;
@@ -874,7 +878,7 @@ json_t *json_load_file(const char *path, json_error_t *error)
         return NULL;
     }
 
-    result = json_loadf(fp, error);
+    result = json_loadf(fp, flags, error);
 
     fclose(fp);
     return result;