Struct RuntimeLimits 

pub struct RuntimeLimits {

    pub max_vm_frames: usize,
    pub max_template_include_depth: usize,
    pub max_template_parse_cache_entries: usize,
    pub max_file_text_cache_entries: usize,
    pub max_json_parse_cache_entries: usize,
    pub max_std_cache_entries: usize,
    pub max_regex_cache_entries: usize,
    pub max_schema_pattern_cache_entries: usize,
    pub max_schema_guard_cache_entries: usize,
    pub max_shape_spec_cache_entries: usize,
    pub default_event_log_queue_depth: usize,
    pub max_agent_sessions: usize,
    pub max_project_fingerprint_depth: usize,
    pub max_shape_validation_depth: usize,
    pub max_project_enrich_yaml_depth: usize,
    pub max_template_ast_depth: usize,
    pub max_constant_folded_collection_items: usize,
    pub max_constant_folded_string_bytes: usize,
    pub max_nested_execution_depth: usize,
    pub max_schema_nudge_depth: usize,
    pub max_schema_nudge_lines: usize,
    pub max_schema_nudge_keys: usize,
}

Fixed resource and recursion ceilings used by the VM/runtime layer.

Fields

max_vm_frames: usize

Maximum nested Harn call frames before the VM raises stack overflow.

max_template_include_depth: usize

Maximum nested .harn.prompt include depth.

max_template_parse_cache_entries: usize

Maximum parsed template assets kept in the per-thread template cache.

max_file_text_cache_entries: usize

Maximum UTF-8 file reads kept in the per-thread stdlib file cache.

max_json_parse_cache_entries: usize

Maximum memoized json_parse inputs kept per VM thread.

max_std_cache_entries: usize

Default maximum entries for the persistent std/cache backends.

max_regex_cache_entries: usize

Maximum compiled regex entries kept per VM thread.

max_schema_pattern_cache_entries: usize

Maximum compiled JSON-schema pattern regexes kept process-wide.

max_schema_guard_cache_entries: usize

Maximum canonical parameter schemas kept per VM thread.

max_shape_spec_cache_entries: usize

Maximum parsed runtime shape specs kept per VM thread.

default_event_log_queue_depth: usize

Default queue depth for memory/file/sqlite event-log subscribers.

max_agent_sessions: usize

Default concurrent agent-session cap per VM thread.

max_project_fingerprint_depth: usize

Maximum directory descent for project fingerprint discovery.

max_shape_validation_depth: usize

Maximum nested runtime shape-spec validation depth.

max_project_enrich_yaml_depth: usize

Maximum nested YAML depth walked while extracting project enrichment hints.

max_template_ast_depth: usize

Maximum nested prompt-template AST/expression depth.

max_constant_folded_collection_items: usize

Maximum collection items the compiler may materialize while folding constants.

max_constant_folded_string_bytes: usize

Maximum string bytes the compiler may materialize while folding constants.

max_nested_execution_depth: usize

Default Harn-side nested-execution budget installed by the builtin policy ceiling.

max_schema_nudge_depth: usize

Maximum schema nesting shown in LLM schema-correction nudges.

max_schema_nudge_lines: usize

Maximum schema lines shown in LLM schema-correction nudges.

max_schema_nudge_keys: usize

Maximum object keys listed in LLM schema-correction nudges.

Implementations

impl RuntimeLimits

pub const DEFAULT: Self

Default profile preserving the legacy hard-coded ceilings.

pub fn value(&self, name: &str) -> Option<usize>

Return the value for a named limit.

pub fn report(&self) -> RuntimeLimitsReport

Build a host-readable report for the effective limit profile.

Trait Implementations

impl Clone for RuntimeLimits

fn clone(&self) -> RuntimeLimits

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RuntimeLimits

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for RuntimeLimits

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for RuntimeLimits

fn eq(&self, other: &RuntimeLimits) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for RuntimeLimits

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for RuntimeLimits

impl Eq for RuntimeLimits

impl StructuralPartialEq for RuntimeLimits