FEATURE: Lexical Scalars

Scope

Support lowercase booleans; signed decimal integers; hexadecimal, octal, and binary integers; underscores; signed 64-bit bounds; decimal fractions and exponents; signed zero; infinity; and NaN. Scalar values must be emitted with the corresponding TOML type tag and a JSON string representation.

Programmatic Acceptance

=== AC scalars-valid-suite ===
Intent: The authoritative conformance suite passes all valid boolean, integer, and float cases.

import subprocess

result = subprocess.run( [ "sh", "sources/stage_test.sh", "valid/bool/|valid/integer/|valid/float/**", ], capture_output=True, text=True, ) print(result.stdout) print(result.stderr) assert result.returncode == 0 === END AC scalars-valid-suite ===

=== AC scalars-invalid-suite ===
Intent: The authoritative conformance suite rejects all invalid boolean, integer, and float cases.

import subprocess

result = subprocess.run( [ "sh", "sources/stage_test.sh", "invalid/bool/|invalid/integer/|invalid/float/**", ], capture_output=True, text=True, ) print(result.stdout) print(result.stderr) assert result.returncode == 0 === END AC scalars-invalid-suite ===

=== AC scalars-bounded-suites ===
Intent: The valid and invalid scalar conformance slices each complete successfully.

import subprocess

patterns = [ "valid/bool/|valid/integer/|valid/float/", "invalid/bool/|invalid/integer/|invalid/float/", ] for pattern in patterns: result = subprocess.run( ["sh", "sources/stage_test.sh", pattern], capture_output=True, text=True, ) print(result.stdout) print(result.stderr) assert result.returncode == 0 === END AC scalars-bounded-suites ===

User Acceptance

• None.

Guardrails

• Integer parsing must reject values outside the signed 64-bit range.
• Integer underscores must satisfy TOML placement rules.
• Floats must reject malformed decimal points and exponents.
• Special float tokens must remain lowercase and preserve the required type semantics.