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docs: hectic C: types for template parser

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This commit is contained in:
yukkop
2025-04-07 17:57:44 +00:00
parent d04a78de23
commit cda65a56eb
5 changed files with 519 additions and 5 deletions
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119
package/c/hectic/hectic.c
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@@ -61,6 +61,8 @@ void set_output_color_mode(ColorMode mode) {
color_mode = mode;
}
#define POSITION_INFO file, func, line
// ------------
// -- Logger --
// ------------
@@ -497,6 +499,8 @@ static const char *skip_whitespace(const char *s) {
return s;
}
static Json *json_parse_value__(const char *file, const char *func, int line, const char **s, Arena *arena);
/* Parse a JSON string (does not handle full escaping) */
static char *json_parse_string__(const char *file, const char *func, int line, const char **s_ptr, Arena *arena) {
const char *s = *s_ptr;
@@ -542,9 +546,6 @@ static double json_parse_number__(const char *file, const char *func, int line,
return num;
}
/* Forward declaration */
static Json *json_parse_value__(const char *file, const char *func, int line, const char **s, Arena *arena);
/* Parse a JSON array: [ value, value, ... ] */
static Json *json_parse_array__(const char *file, const char *func, int line, const char **s, Arena *arena) {
raise_message(LOG_LEVEL_DEBUG, file, func, line, "Entering json_parse_array__ at position: %p", *s);
@@ -1419,4 +1420,114 @@ char* logger_rules_to_string(Arena *arena) {
}
return buffer;
}
}
// ---------------
// -- Templater --
// ---------------
// Look at package\c\hectic\docs\templater.md
TemplateConfig *template_default_config__(const char *file, const char *func, int line, Arena *arena) {
TemplateConfig *config = arena_alloc__(file, func, line, arena, sizeof(TemplateConfig));
if (!config) return NULL;
config->open_brace = "{%";
config->close_brace = "%}";
config->null_handler = "%%";
config->section_prefix = "for ";
config->section_suffix = " in ";
config->section_optional_suffix = " join ";
config->section_post_suffix = " do ";
config->interpolation_prefix = "";
config->include_prefix = "include ";
config->function_prefix = "call ";
return config;
}
static TemplateNode *template_node_create__(const char *file, const char *func, int line, Arena *arena, TemplateNodeType type, TemplateValue *value) {
TemplateNode *node = arena_alloc__(file, func, line, arena, sizeof(TemplateNode));
if (!node) {
raise_message(LOG_LEVEL_EXCEPTION, file, func, line, "Failed to allocate node");
}
node->type = type;
node->value = *value;
node->children = NULL;
node->next = NULL;
return node;
}
#define CHECK_CONFIG_STR(field, name) \
do { \
if (!(config->field)) { \
raise_message(LOG_LEVEL_EXCEPTION, file, func, line, "CONFIG: " name " is NULL"); \
return false; \
} \
if (strlen(config->field) > TEMPLATE_MAX_PREFIX_LEN) { \
raise_message(LOG_LEVEL_EXCEPTION, file, func, line, "CONFIG: " name " is too long"); \
return false; \
} \
} while (0)
bool template_validate_config__(const char *file, const char *func, int line, TemplateConfig *config) {
if (!config) {
raise_message(LOG_LEVEL_EXCEPTION, file, func, line, "Config is NULL");
return false;
}
CHECK_CONFIG_STR(open_brace, "Open brace");
CHECK_CONFIG_STR(close_brace, "Close brace");
CHECK_CONFIG_STR(null_handler, "Null handler");
CHECK_CONFIG_STR(section_prefix, "Section prefix");
CHECK_CONFIG_STR(section_suffix, "Section suffix");
CHECK_CONFIG_STR(section_optional_suffix, "Section optional suffix");
CHECK_CONFIG_STR(section_post_suffix, "Section post suffix");
CHECK_CONFIG_STR(interpolation_prefix, "Interpolation prefix");
CHECK_CONFIG_STR(include_prefix, "Include prefix");
CHECK_CONFIG_STR(function_prefix, "Function prefix");
return true;
}
TemplateNode *template_parse__(const char *file, const char *func, int line, Arena *arena, const char *template, TemplateConfig *config) {
if (!arena) {
raise_message(LOG_LEVEL_EXCEPTION, file, func, line, "Arena is NULL");
}
if (!config) {
raise_message(LOG_LEVEL_EXCEPTION, file, func, line, "Config is NULL");
}
if (!template) {
raise_message(LOG_LEVEL_EXCEPTION, file, func, line, "Template is NULL");
}
// Find the first open brace
const char *open_brace = strstr(template, config->open_brace);
if (!open_brace) {
raise_message(LOG_LEVEL_LOG, file, func, line, "No open brace found");
TemplateValue val = {.text = {.content = (char *)template}};
return template_node_create__(file, func, line, arena,
TEMPLATE_NODE_TEXT, &val);
}
// Deside tag type by prefix
const char *tag_prefix = open_brace + strlen(config->open_brace);
if (strncmp(tag_prefix, config->section_prefix, strlen(config->section_prefix)) == 0) {
// Section tag
} else if (strncmp(tag_prefix, config->interpolation_prefix, strlen(config->interpolation_prefix)) == 0) {
// Interpolation tag
} else if (strncmp(tag_prefix, config->include_prefix, strlen(config->include_prefix)) == 0) {
// Include tag
} else if (strncmp(tag_prefix, config->function_prefix, strlen(config->function_prefix)) == 0) {
// Function tag
} else {
raise_message(LOG_LEVEL_EXCEPTION, file, func, line, "Unknown tag prefix: %s", slice_create__(file, func, line, 1, (char *)tag_prefix, strlen(tag_prefix), 0, TEMPLATE_MAX_PREFIX_LEN));
return NULL;
}
return NULL;
}