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A compiler for generating reliability artifacts from service expectation definitions.

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caffeine_lang src caffeine_lang parser linker.gleam
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src/caffeine_lang/parser/linker.gleam 

import caffeine_lang/common/errors.{type CompilationError}

import caffeine_lang/frontend/pipeline

import caffeine_lang/middle_end/semantic_analyzer.{

  type IntermediateRepresentation,

}

import caffeine_lang/parser/artifacts

import caffeine_lang/parser/blueprints

import caffeine_lang/parser/expectations

import caffeine_lang/parser/file_discovery

import caffeine_lang/parser/ir_builder

import gleam/list

import gleam/result



/// Link will fetch, then parse all configuration files, combining them into one single

/// list of intermediate representation objects. In the future how we fetch these files will

/// change to enable fetching from remote locations, via git, etc. but for now we

/// just support standard library artifacts, a single blueprint file, and a single

/// expectations directory. Furthermore note that we will ignore non-.caffeine files within

/// an org's team's expectation directory and incorrectly placed .caffeine files will also

/// be ignored.

///

/// ASSUMPTIONS:

///   * specific known directories for expectations and blueprints

///   * no mixed type files

///   * all files are `.caffeine`

@internal

pub fn link(

  blueprint_file_path: String,

  expectations_directory: String,

) -> Result(List(IntermediateRepresentation), CompilationError) {

  use expectation_files <- result.try(file_discovery.get_caffeine_files(

    expectations_directory,

  ))



  use artifacts <- result.try(artifacts.parse_standard_library())



  // Compile blueprints .caffeine file to JSON, then parse

  use blueprints_json <- result.try(pipeline.compile_blueprints_file(

    blueprint_file_path,

  ))

  use blueprints <- result.try(blueprints.parse_from_json_string(

    blueprints_json,

    artifacts,

  ))



  use expectations_with_paths <- result.try(parse_expectation_files(

    expectation_files,

    blueprints,

  ))



  Ok(ir_builder.build_all(expectations_with_paths))

}



fn parse_expectation_files(

  files: List(String),

  blueprints: List(blueprints.Blueprint),

) {

  files

  |> list.map(fn(file_path) {

    // Compile expects .caffeine file to JSON, then parse

    pipeline.compile_expects_file(file_path)

    |> result.try(fn(json) {

      expectations.parse_from_json_string(json, blueprints)

    })

    |> result.map(fn(exps) { #(exps, file_path) })

  })

  |> result.all()

}