full json parser

1 files changed, 1 insertions, 299 deletions

diff --git a/lsp.c b/lsp.c
index 5847642..1b6d214 100644
--- a/lsp.c
+++ b/lsp.c
@@ -2,304 +2,6 @@ typedef struct {
 	Process process;
 } LSP;
 
-typedef struct {
-	u32 pos;
-	u32 len;
-} JSONString;
-
-typedef struct JSONValue JSONValue;
-
-typedef struct {
-	u32 len;
-	// this is an index into the values array
-	//   values[items..items+len] store the names
-	//   values[items+len..items+2*len] store the values
-	u32 items;
-} JSONObject;
-
-typedef struct {
-	u32 len;
-	// this is an index into the values array
-	//    values[elements..elements+len] are the elements
-	u32 elements;
-} JSONArray;
-
-enum {
-	JSON_NULL,
-	JSON_FALSE,
-	JSON_TRUE,
-	JSON_NUMBER,
-	JSON_STRING,
-	JSON_OBJECT,
-	JSON_ARRAY
-};
-
-struct JSONValue {
-	u8 type;
-	union {
-		double number;
-		JSONString string;
-		JSONArray array;
-		JSONObject object;
-	} val;
-};
-
-
-typedef struct {
-	char error[64];
-	const char *text;
-	// root = values[0]
-	JSONValue *values;
-} JSON;
-
-static bool json_parse_value(JSON *json, u32 *p_index, JSONValue *val);
-
-// count number of comma-separated values until
-// closing ] or }
-static u32 json_count(JSON *json, u32 index) {
-	int bracket_depth = 0;
-	int brace_depth = 0;
-	u32 count = 1;
-	const char *text = json->text;
-	while (isspace(text[index])) ++index;
-	// special case: empty object/array
-	if (text[index] == '}' || text[index] == ']')
-		return 0;
-	
-	int mark[5000] = {0};
-	for (; ; ++index) {
-		switch (text[index]) {
-		case '\0':
-			return 0; // bad no closing bracket
-		case '[':
-			++bracket_depth;
-			break;
-		case ']':
-			--bracket_depth;
-			if (bracket_depth < 0)
-				return count;
-			break;
-		case '{':
-			++brace_depth;
-			mark[index] = true;
-			break;
-		case '}':
-			--brace_depth;
-			mark[index] = true;
-			if (brace_depth < 0){
-			
-			for (int i = 0; text[i]; ++i ){
-				switch (mark[i]){
-				case 1: printf("\x1b[91m"); break;
-				case 2: printf("\x1b[92m"); break;
-				}
-				printf("%c",text[i]);
-				if (mark[i]) printf("\x1b[0m");
-			}
-			printf("\n");
-			
-				return count;
-			}
-			break;
-		case ',':
-			if (bracket_depth == 0 && brace_depth == 0)
-				++count;
-			break;
-		case '"': {
-			++index; // skip opening "
-			int escaped = 0;
-			for (; ; ++index) {
-				mark[index] = 2;
-				switch (text[index]) {
-				case '\0': return 0; // bad no closing quote
-				case '\\': escaped = !escaped; break;
-				case '"':
-					if (!escaped)
-						goto done;
-					escaped = false;
-					break;
-				default:
-					escaped = false;
-					break;
-				}
-			}
-			done:;
-			} break;
-		}
-	}
-}
-
-static bool json_parse_object(JSON *json, u32 *p_index, JSONObject *object) {
-	u32 index = *p_index;
-	const char *text = json->text;
-	++index; // go past {
-	u32 count = json_count(json, index);
-	printf("%u\n",count);
-	exit(0);
-	object->len = count;
-	object->items = arr_len(json->values);
-	arr_set_len(json->values, arr_len(json->values) + 2 * count);
-	
-	
-	for (u32 i = 0; i < count; ++i) {
-		if (i > 0) {
-			if (text[index] != ',') {
-				strbuf_printf(json->error, "stuff after value in object");
-				return false;
-			}
-			++index;
-		}
-		JSONValue name = {0}, value = {0};
-		if (!json_parse_value(json, &index, &name))
-			return false;
-		while (isspace(text[index])) ++index;
-		if (text[index] != ':') {
-			strbuf_printf(json->error, "stuff after name in object");
-			return false;
-		}
-		while (isspace(text[index])) ++index;
-		if (!json_parse_value(json, &index, &value))
-			return false;
-		while (isspace(text[index])) ++index;
-		json->values[object->items + i] = name;
-		json->values[object->items + count + i] = value;
-	}
-	
-	if (text[index] != '}') {
-		strbuf_printf(json->error, "mismatched brackets or quotes.");
-		return false;
-	}
-	++index; // skip }
-	*p_index = index;
-	return true;
-}
-
-static bool json_parse_array(JSON *json, u32 *p_index, JSONArray *array) {
-	(void)json;(void)p_index;(void)array;
-	abort();
-}
-
-static bool json_parse_string(JSON *json, u32 *p_index, JSONString *string) {
-	(void)json;(void)p_index;(void)string;
-	abort();
-}
-
-static bool json_parse_number(JSON *json, u32 *p_index, double *number) {
-	(void)json;(void)p_index;(void)number;
-	abort();
-}
-
-static bool json_parse_value(JSON *json, u32 *p_index, JSONValue *val) {
-	const char *text = json->text;
-	u32 index = *p_index;
-	while (isspace(text[index])) ++index;
-	switch (text[index]) {
-	case '{':
-		val->type = JSON_OBJECT;
-		if (!json_parse_object(json, &index, &val->val.object))
-			return false;
-		break;
-	case '[':
-		val->type = JSON_ARRAY;
-		if (!json_parse_array(json, &index, &val->val.array))
-			return false;
-		break;
-	case '"':
-		val->type = JSON_STRING;
-		if (!json_parse_string(json, &index, &val->val.string))
-			return false;
-		break;
-	case ANY_DIGIT:
-		val->type = JSON_NUMBER;
-		if (!json_parse_number(json, &index, &val->val.number))
-			return false;
-		break;
-	case 'f':
-		val->type = JSON_FALSE;
-		if (!str_has_prefix(&text[index], "false"))
-			return false;
-		index += 5;
-		break;
-	case 't':
-		val->type = JSON_TRUE;
-		if (!str_has_prefix(&text[index], "true"))
-			return false;
-		index += 4;
-		break;
-	case 'n':
-		val->type = JSON_NULL;
-		if (!str_has_prefix(&text[index], "null"))
-			return false;
-		index += 4;
-		break;
-	default:
-		strbuf_printf(json->error, "bad value");
-	}
-	*p_index = index;
-	return true;
-}
-
-// NOTE: text must live as long as json!!!
-static bool json_parse(JSON *json, const char *text) {
-	memset(json, 0, sizeof *json);
-	json->text = text;
-	// @TODO: is this a good capacity?
-	arr_reserve(json->values, strlen(text) / 8);
-	arr_addp(json->values); // add root
-	JSONValue val = {0};
-	u32 index = 0;
-	if (!json_parse_value(json, &index, &val))
-		return false;
-	
-	while (isspace(text[index])) ++index;
-	if (text[index]) {
-		strbuf_printf(json->error, "extra text after end of root object");
-		return false;
-	}
-	json->values[0] = val;
-	return true;
-}
-
-
-static void json_debug_print_value(const JSON *json, u32 idx) {
-	JSONValue *value = &json->values[idx];
-	switch (value->type) {
-	case JSON_NULL: printf("null"); break;
-	case JSON_FALSE: printf("false"); break;
-	case JSON_TRUE: printf("true"); break;
-	case JSON_NUMBER: printf("%f", value->val.number); break;
-	case JSON_STRING: {
-		JSONString *string = &value->val.string;
-		printf("\"%.*s\"",
-			(int)string->len,
-			json->text + string->pos);
-		} break;
-	case JSON_ARRAY: {
-		JSONArray *array = &value->val.array;
-		printf("[");
-		for (u32 i = 0; i < array->len; ++i) {
-			json_debug_print_value(json, array->elements + i);
-			printf(",");
-		}
-		printf("]");
-	} break;
-	case JSON_OBJECT: {
-		JSONObject *obj = &value->val.object;
-		printf("{");
-		for (u32 i = 0; i < obj->len; ++i) {
-			json_debug_print_value(json, obj->items + i);
-			printf(": ");
-			json_debug_print_value(json, obj->items + obj->len + i);
-			printf(",");
-		}
-		printf("}");
-		} break;
-	}
-}
-
-static void json_debug_print(const JSON *json) {
-	json_debug_print_value(json, 0);
-}
 
 static void send_request(LSP *lsp, const char *content) {
 	char header[128];
@@ -336,6 +38,6 @@ void lsp_create(LSP *lsp, const char *analyzer_command) {
 	printf("%s\n",rnrn+4);
 	if (!json_parse(&json, rnrn + 4))
 		printf("fail : %s\n",json.error);
-	json_debug_print(&json);
+//	json_debug_print(&json);printf("\n");
 	
 }