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parser: Simplify parser construction

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- Replace several different parse nodes with Match, which matches the
  exact text of a token but not the token type
- Allow arrays to be used in place of Sequence
This commit is contained in:
James Westman 2022-01-04 16:59:19 -06:00
parent ad6a2cf538
commit 8d587b62a0
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GPG key ID: CE2DBA0ADB654EA6
11 changed files with 182 additions and 211 deletions
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72
blueprintcompiler/extensions/gtk_menu.py
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@ -51,94 +51,94 @@ menu_contents = Sequence()
menu_section = Group(
Menu,
Sequence(
Keyword("section"),
[
"section",
UseLiteral("tag", "section"),
Optional(UseIdent("id")),
menu_contents
)
]
)
menu_submenu = Group(
Menu,
Sequence(
Keyword("submenu"),
[
"submenu",
UseLiteral("tag", "submenu"),
Optional(UseIdent("id")),
menu_contents
)
]
)
menu_attribute = Group(
MenuAttribute,
Sequence(
[
UseIdent("name"),
Op(":"),
":",
value.expected("a value"),
StmtEnd().expected("`;`"),
)
Match(";").expected(),
]
)
menu_item = Group(
Menu,
Sequence(
Keyword("item"),
[
"item",
UseLiteral("tag", "item"),
Optional(UseIdent("id")),
OpenBlock().expected("`{`"),
Until(menu_attribute, CloseBlock()),
)
Match("{").expected(),
Until(menu_attribute, "}"),
]
)
menu_item_shorthand = Group(
Menu,
Sequence(
Keyword("item"),
[
"item",
UseLiteral("tag", "item"),
OpenParen(),
"(",
Group(
MenuAttribute,
Sequence(UseLiteral("name", "label"), value),
[UseLiteral("name", "label"), value],
),
Optional(Sequence(
Comma(),
Optional(Sequence(
Optional([
",",
Optional([
Group(
MenuAttribute,
Sequence(UseLiteral("name", "action"), value),
[UseLiteral("name", "action"), value],
),
Optional(Sequence(
Comma(),
Optional([
",",
Group(
MenuAttribute,
Sequence(UseLiteral("name", "icon"), value),
[UseLiteral("name", "icon"), value],
),
))
))
)),
CloseParen().expected("')'"),
)
])
])
]),
Match(")").expected(),
]
)
menu_contents.children = [
OpenBlock(),
Match("{"),
Until(AnyOf(
menu_section,
menu_submenu,
menu_item_shorthand,
menu_item,
menu_attribute,
), CloseBlock()),
), "}"),
]
menu = Group(
Menu,
Sequence(
Keyword("menu"),
[
"menu",
UseLiteral("tag", "menu"),
Optional(UseIdent("id")),
menu_contents
),
],
)