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| author | dos-reis <gdr@axiomatics.org> | 2011-10-11 02:31:54 +0000 |
|---|---|---|
| committer | dos-reis <gdr@axiomatics.org> | 2011-10-11 02:31:54 +0000 |
| commit | 3d58c8ff9d2a29477d85828b0dd1c35fecbaab5b (patch) | |
| tree | 5906e7563349f847b9284eada8693bc25cdf8ecb /src/interp/lexing.boot | |
| parent | 5c9c9d744bf4f5c71b952f0ef0be9e04a6f92e49 (diff) | |
| download | open-axiom-3d58c8ff9d2a29477d85828b0dd1c35fecbaab5b.tar.gz | |
* interp/lexing.boot (matchString): New.
* interp/fnewmeta.lisp: Use it.
* interp/parsing.lisp: Likewise.
(MATCH-STRING): Remove.
Diffstat (limited to 'src/interp/lexing.boot')
| -rw-r--r-- | src/interp/lexing.boot | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/interp/lexing.boot b/src/interp/lexing.boot index 992239e3..712b1927 100644 --- a/src/interp/lexing.boot +++ b/src/interp/lexing.boot @@ -372,6 +372,18 @@ ungetTokens() == coreError '"How many tokens do you think you have?" +++ Returns length of X if X matches initial segment of IN-STREAM. +++ Otherwise, return nil. +matchString x == + ungetTokens() + skipBlankChars() + not linePastEnd? $spadLine and currentChar() ~= nil => + nx := #x + buf := lineBuffer $spadLine + idx := lineCurrentIndex $spadLine + nx + idx > #buf => nil + and/[stringChar(x,i) = stringChar(buf,idx + i) for i in 0..nx-1] and nx + nil --% --% Stack abstract datatype. |