Struct PathResolver 

pub struct PathResolver { /* private fields */ }

Resolves EDIFACT ID paths to numeric element indices.

Built from a PID schema JSON. Used at TOML load time to normalize named paths (e.g., “loc.c517.d3225”) to numeric paths (“loc.1.0”).

Supports ordinal suffixes for duplicate IDs:

• Duplicate composites per segment: c556 (first), c556_2 (second), c556_3 (third)
• Duplicate data elements per composite: d3036 (first), d3036_2 (second), etc.

Implementations

impl PathResolver

pub fn from_schema(schema: &Value) -> Self

Build from a PID schema JSON (serde_json::Value).

Walks all groups recursively, collecting segment element indices.

pub fn from_schema_dir(dir: &Path) -> Self

Build from all PID schema JSON files in a directory.

Loads every pid_*_schema.json file and merges their element mappings. This ensures comprehensive coverage across all PIDs.

pub fn merge_schema(&mut self, schema: &Value)

Merge another PID schema into this resolver.

pub fn resolve_path(&self, path: &str) -> String

Resolve a single field path. Returns the numeric path if the input is a named path; returns the input unchanged if already numeric.

Examples:

• "loc.c517.d3225" → "loc.1.0"
• "seq.d1229" → "seq.0"
• "cav[Z91].c889.d7111" → "cav[Z91].0.0"
• "sts.c556_2.d9013" → "sts.3.0" (ordinal suffix for duplicate composite)
• "nad.c080.d3036_2" → "nad.3.1" (ordinal suffix for duplicate data element)
• "loc.1.0" → "loc.1.0" (unchanged)

pub fn resolve_discriminator(&self, disc: &str) -> String

Resolve a discriminator string to 3-part numeric format.

The engine’s resolve_repetition requires TAG.N.M=VALUE (3-part).

Input formats:

• Named simple: "SEQ.d1229=ZF0" → "SEQ.0.0=ZF0"
• Named composite: "STS.c556.d9013=E01" → "STS.2.0=E01"
• Numeric 3-part: "LOC.0.0=Z16" → "LOC.0.0=Z16" (unchanged)
• Numeric 2-part: "SEQ.0=ZF0" → "SEQ.0.0=ZF0" (upgraded)

Trait Implementations

impl Clone for PathResolver

fn clone(&self) -> PathResolver

Returns a duplicate of the value.

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

Performs copy-assignment from source.