Import statement parser

[simerplaha]

• Implementing new parsers is still on hold, but parsing import statements is required to complete scoping rules for integration.
• Towards Parser errors prevent CodeProvider execution (completion, goto definition etc) #104.

[tdroxler]

what if we have no double quotes?

import folder/file.ral

how will it parse?

[simerplaha]

It will parse import with an undefined/empty path. So during processing, nothing gets imported.

folder/file.ral will get parsed as the next valid syntax i.e. infix expression, which in this case is division. This syntax is valid in the following case:

let folder = 1
let file = <<SomeContractOrObject instance>> // this object could contain `ral` either as a value or a function.
let division_result = folder / file.ral

The parser will always try to match the syntax to a the next valid grammar.

[tdroxler]

minor comment, otherwise LGTM