Package augment facilitates adding syntax to the Go AST.

Parse parses a pgo file.

Dots is a "..." used as an expression.

Expr is a Go expression at the top-level in pgo.

File is a single pgo file.

FuncDecl is a Go function declaration at the top-level in pgo.

GenDecl is a Go general declaration at the top-level in pgo.

StmtList is a list of statements at the top-level of a pgo file.

Node unifies the custom node types we introduce to the Go AST.