Module pipeline 

Pipeline expression AST and parser.

Supports three composition operators with precedence (high → low):

• | Pipe — pass output of left as input to right
• && Sequential — run right only if left succeeds (exit code 0)
• , Parallel — run all branches concurrently

Structs

PipelineOutput

Output produced by a single pipeline stage.

Enums

PipelineExpr

Pipeline expression AST.

PipelineParseError

Errors from pipeline expression parsing.

PipelineStatus

Status of a pipeline stage execution.

Functions

has_pipeline_syntax

Returns true if the input string contains pipeline operators.

inject_input

Replace {{input}} placeholders in a template string with the given value. If input is None, replaces with empty string.

parse_pipeline_expr

Parse a pipeline expression string into an AST.