Gnomod.sublime-syntax

%YAML 1.2
---
# License: https://github.com/mitranim/sublime-gomod#misc

file_extensions: [gno.mod, gno.work]
scope: source.gnomod

# Note: in Go 1.11, identifiers may include ANY non-whitespace except `//`. This
# means they may include `()` in any quantity and order. This latter part is
# probably an artifact of the implementation, unintuitive and likely to be
# changed in the future. At the time of writing, no valid `go.mod` should rely
# on this "feature", so we parse parens separately to future-proof the syntax.
variables:
  ident_body: (?:[^\s/()]|/(?!/))+
  ident_terminator: '//|\(|\)|\s|$'
  ident: "{{ident_body}}(?={{ident_terminator}})"

contexts:
  main:
    - include: comment-match
    - include: punctuation-match
    - include: statement-match

  nonroot-match:
    - include: comment-match
    - include: punctuation-match
    - match: "{{ident}}"
      scope: variable.gnomod

  comment-match:
    - match: //(?:.|\s)*
      scope: comment.gnomod

  punctuation-match:
    - match: \(
      scope: punctuation.section.parens.begin.gnomod
    - match: \)
      scope: punctuation.section.parens.end.gnomod

  statement-match:
    - match: (?:exclude|module|replace|require)(?={{ident_terminator}})
      scope: keyword.gnomod
      push: modvers-or-replacements-pop
    - match: "{{ident}}"
      scope: keyword.gnomod
      push:
        - include: before-eol-or-comment-pop
        - include: nonroot-match

  # For code after `exclude`, `replace` or `require`:
  #   package
  #   package version
  #   package [version] => package [version]
  modvers-or-replacements-pop:
    - match: \(
      scope: punctuation.section.parens.begin.gnomod
      set:
        - match: \)
          scope: punctuation.section.parens.end.gnomod
          # Note: go.mod expects only comments after a closing paren
          set:
            - include: comment-match
            - include: before-eol-or-comment-pop
        - include: comment-match
        - include: modver-or-replacement-match
    - include: before-eol-or-comment-pop
    - include: modver-or-replacement-match

  modver-or-replacement-match:
    - match: (?=\))
      pop: true

    - match: =>(?={{ident_terminator}})
      scope: keyword.operator.gnomod

    - match: '({{ident_body}})\s+(=>)(?={{ident_terminator}})'
      captures:
        1: variable.gnomod
        2: keyword.operator.gnomod

    - match: '({{ident_body}})\s+({{ident_body}})(?={{ident_terminator}})'
      captures:
        1: variable.gnomod
        2: string.version.gnomod

    - match: "{{ident}}"
      scope: variable.gnomod

  before-eol-or-comment-pop:
    - match: (?=//|$)
      pop: true