Crate sipha_diff 

Tree diff and comparison for sipha syntax trees.

Compare two syntax trees by their emitted text (round-trip). Useful for tests (assert formatted output) or refactors (compare before/after).

Grammar tests with S-expressions

Use assert_parse_eq or the assert_parse! macro to compare a parsed tree against an expected S-expression string (e.g. "(ROOT (EXPR (NUM \"1\")))").

Macros

assert_parse

Assert that parsing input with parse_fn produces a tree matching expected_sexp.

Structs

SexpOptions

Options for S-expression output.

Functions

assert_parse_eq

Assert that parsing input yields a tree whose S-expression equals expected_sexp.

format_diff

Format a short diff message: “expected” vs “got” (full round-trip).

syntax_node_to_sexp

Serialize a syntax tree to an S-expression string.

trees_equal

Returns true if both trees emit the same string (same tokens and trivia).

trees_equal_semantic

Returns true if both trees have the same semantic content (ignoring trivia).