From 9b5fdb05609c24a03d4e0e4386e9eadbfe6c5405 Mon Sep 17 00:00:00 2001
From: Claudius Holeksa <mail@keldu.de>
Date: Fri, 23 Jun 2023 09:41:02 +0200
Subject: c++,codec-json: Added minor helpers for json

---
 src/codec-json/json.tmpl.h | 39 +++++++++++++++++++++++++++------------
 1 file changed, 27 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/codec-json/json.tmpl.h b/src/codec-json/json.tmpl.h
index b4e8d6d..063595d 100644
--- a/src/codec-json/json.tmpl.h
+++ b/src/codec-json/json.tmpl.h
@@ -314,46 +314,60 @@ struct json_encode<schema::Union<schema::Member<T,Key>...>, RootSchema, FromEnco
 	}
 };
 
+struct json_helper {
+	static bool is_whitespace(int8_t ch) {
+		return ch == '\t' || ch == ' ' || ch == '\r' || ch == '\n';
+	}
+
+	static void skip_whitespace(buffer_view& buff) {
+		while(buff.read_composite_length() > 0 && json_helper::is_whitespace(buff.read())) {
+			buff.read_advance(1);
+		}
+	}
+};
+
 template<typename Schema, typename RootSchema, typename ToDecode>
 struct json_decode;
 
 template<typename T, size_t N, typename RootSchema, typename ToDecode>
 struct json_decode<schema::Primitive<T,N>, RootSchema, ToDecode> {
-	static error_or<void> decode(buffer_view& buff, data<schema::Primitive<T,N>, ToDecode>& to){
-		assert((buff.read() >= '0' && buff.read() <= '9') ||
-		   buff.read() == '+' || buff.read() == '-');
+	static error_or<void> decode(buffer_view& buff, data<schema::Primitive<T,N>, ToDecode>& to) {
+		assert(
+		   ( buff.read() >= '0' && buff.read() <= '9')
+		   || ( buff.read() == '+' || buff.read() == '-')
+		);
 
 		std::size_t offset = 0;
 
-		if(buff.read() == '-'){
+		if (buff.read() == '-'){
 			++offset;
-		}else if(buff.read() == '+'){
+		} else if (buff.read() == '+'){
 			return make_error<err::not_supported>();
 		}
 		if (offset >= buff.read_composite_length()) {
 			return make_error<err::buffer_exhausted>();
 		}
-		if(buff.read(offset) >= '1' && buff.read(offset) <= '9'){
+		if (buff.read(offset) >= '1' && buff.read(offset) <= '9') {
 			++offset;
 
-			if(offset >= buff.read_composite_length()){
+			if(offset >= buff.read_composite_length()) {
 				return make_error<err::buffer_exhausted>();
 			}
 
 			while(1){
-				if (buff.read(offset) >= '0' && buff.read(offset) <= '9'){
+				if (buff.read(offset) >= '0' && buff.read(offset) <= '9') {
 					++offset;
 
-					if(offset >= buff.read_composite_length()){
+					if(offset >= buff.read_composite_length()) {
 						break;
 					}
 					continue;
 				}
 				break;
 			}
-		}else if (buff.read(offset) == '0' ){
+		} else if (buff.read(offset) == '0' ) {
 			++offset;
-		}else{
+		} else {
 			return make_error<err::buffer_exhausted>();
 		}
 
@@ -388,7 +402,8 @@ struct json_decode<schema::Array<T,D>, RootSchema, ToDecode> {
 			if( buff.read_composite_length() == 0 ){
 				return make_error<err::buffer_exhausted>();
 			}
-			
+
+			json_helper::skip_whitespace(buff);
 		}
 		return void_t{};
 	}
-- 
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