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| author | dos-reis <gdr@axiomatics.org> | 2012-05-06 22:02:12 +0000 |
|---|---|---|
| committer | dos-reis <gdr@axiomatics.org> | 2012-05-06 22:02:12 +0000 |
| commit | baa2d50e5a11158ac998dfc0f3c8d5293666f77a (patch) | |
| tree | fdd18c9db3f95045d14bf01200d42de63ac3a93f /src/interp/lexing.boot | |
| parent | 3ca02c13b9f1cd5026ce2beec02b812a5e55baef (diff) | |
| download | open-axiom-baa2d50e5a11158ac998dfc0f3c8d5293666f77a.tar.gz | |
* interp/lexing.boot (indentationLocation): New.
* interp/macros.lisp (expand-tabs): Use it in lieu of NDENT-POS.
* interp/preparse.lisp (PREPARSE1): Likewise.
Diffstat (limited to 'src/interp/lexing.boot')
| -rw-r--r-- | src/interp/lexing.boot | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/interp/lexing.boot b/src/interp/lexing.boot index 4b357918..36b54fd5 100644 --- a/src/interp/lexing.boot +++ b/src/interp/lexing.boot @@ -44,6 +44,22 @@ module lexing where matchString: %String -> %Maybe %Short matchAdvanceString: %String -> %Maybe %Short matchAdvanceKeyword: %Symbol -> %Thing + indentationLocation: %String -> %Maybe %Short + +--% + +++ Return the logical indentation position in the `line', after +++ expansion of leading vertical tab characters. +indentationLocation line == + loc := 0 + n := #line + for i in 0.. repeat + i >= n => return nil + spaceChar? line.i => loc := loc + 1 + tabChar? line.i => loc := 8 * (loc quo 8 + 1) + return loc + +--% --% --% Line abstract datatype |