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Factor out script/command/word/bare-word patterns to permit making bracket variations

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This commit is contained in:
Tangent Wantwight 2023-08-25 12:46:16 -04:00
parent 6cce5bb6ed
commit b031381ff7
1 changed files with 53 additions and 38 deletions
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91
src/notcl.ts
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@ -6,6 +6,7 @@ import {
TextWord,
EnchantedWord as EnchantedWordType,
SimplifyWord,
InterpolatedPiece,
} from "./words";
const Comment = Regex(/#[^\n]*/y)
@ -22,23 +23,27 @@ const BackslashEscape = Regex(/\\(.)/y)
.expects("\\")
.map(([, char]) => ({ text: char }));
const BareWord = Sequence(
AtLeast(
1,
Choose(
BackslashEscape,
Regex(/[^\s\\;]+/y)
.expects("CHAR")
.map(([text]) => ({ text }))
const BARE_WORD_CHAR = /[^\s\\;]+/y;
function bareWordTmpl(charRegex: RegExp) {
return Sequence(
AtLeast(
1,
Choose<InterpolatedPiece>(
BackslashEscape,
Regex(charRegex)
.expects("CHAR")
.map(([text]) => ({ text }))
)
)
)
).map(([pieces]) => SimplifyWord(pieces));
).map(([pieces]) => SimplifyWord(pieces));
}
const QuotedWord = Sequence(
Regex(/"/y).expects('"'),
AtLeast(
0,
Choose(
Choose<InterpolatedPiece>(
BackslashEscape,
Regex(/[^"\\]+/y)
.expects("CHAR")
@ -67,40 +72,50 @@ const Brace: Pattern<string> = Sequence(
Regex(/\}/y).expects("}")
).map(([, fragments]) => fragments.join(""));
const Word = Choose<WordType>(
EnchantedWord,
Brace.map((text) => ({ text } as TextWord)),
QuotedWord,
BareWord
);
function wordTmpl(bareWordCharRegex: RegExp): Pattern<WordType> {
return Choose<WordType>(
EnchantedWord,
Brace.map((text) => ({ text } as TextWord)),
QuotedWord,
bareWordTmpl(bareWordCharRegex)
);
}
const CommandTerminator = Regex(/[\n;]/y)
.expects("NEWLINE | ;")
.map(() => true);
const Command = Sequence(
Word,
AtLeast(
0,
Sequence(PreWordWhitespace, Word).map(([, word]) => word)
),
AtLeast(0, PreWordWhitespace)
).map(([word, moreWords]) => [word].concat(moreWords));
function commandTmpl(bareWordCharRegex: RegExp) {
const word = wordTmpl(bareWordCharRegex);
return Sequence(
word,
AtLeast(
0,
Sequence(PreWordWhitespace, word).map(([, word]) => word)
),
AtLeast(0, PreWordWhitespace)
).map(([word, moreWords]) => [word].concat(moreWords));
}
const Script = Sequence(
AtLeast(
0,
Choose(
PreWordWhitespace.map(() => []),
CommandTerminator.map(() => []),
Sequence(Comment, Choose(CommandTerminator, End())).map(() => []),
Sequence(Command, Choose(CommandTerminator, End())).map(
([words]) => words
function scriptTmpl(bareWordCharRegex: RegExp, endPattern: Pattern<unknown>) {
return Sequence(
AtLeast(
0,
Choose(
PreWordWhitespace.map(() => []),
CommandTerminator.map(() => []),
Sequence(Comment, Choose(CommandTerminator, endPattern)).map(() => []),
Sequence(
commandTmpl(bareWordCharRegex),
Choose(CommandTerminator, endPattern)
).map(([words]) => words)
)
)
),
End()
).map(([commands]) => commands.filter((command) => command.length > 0));
),
endPattern
).map(([commands]) => commands.filter((command) => command.length > 0));
}
const Script = scriptTmpl(BARE_WORD_CHAR, End());
const ERROR_CONTEXT = /(?<=([^\n]{0,50}))([^\n]{0,50})/y;