diff options
Diffstat (limited to 'src/boot/scanner.boot')
| -rw-r--r-- | src/boot/scanner.boot | 43 |
1 files changed, 32 insertions, 11 deletions
diff --git a/src/boot/scanner.boot b/src/boot/scanner.boot index 9745bae6..96dd03f6 100644 --- a/src/boot/scanner.boot +++ b/src/boot/scanner.boot @@ -38,6 +38,27 @@ import includer namespace BOOTTRAN module scanner +shoeSPACE == QENUM('" ", 0) + +shoeESCAPE == QENUM('"__ ", 0) +shoeLispESCAPE := QENUM('"! ", 0) + +shoeSTRING_CHAR == QENUM('"_" ", 0) + +shoePLUSCOMMENT == QENUM('"+ ", 0) + +shoeMINUSCOMMENT == QENUM('"- ", 0) + +shoeDOT == QENUM('". ", 0) + +shoeEXPONENT1 == QENUM('"E ", 0) + +shoeEXPONENT2 == QENUM('"e ", 0) + +shoeCLOSEPAREN == QENUM('") ", 0) + +shoeTAB == 9 + -- converts X to double-float. double x == FLOAT(x, 1.0) @@ -159,7 +180,7 @@ shoeToken () == c:=QENUM($ln,$n) linepos:=$linepos n:=$n - ch:=$ln.$n + ch := stringChar($ln,$n) b:= shoeStartsComment() => shoeComment() @@ -226,11 +247,11 @@ shoeLispEscape()== $n:=$n+1 $n >= $sz => SoftShoeError([$linepos,:$n],'"lisp escape error") - shoeLeafError ($ln.$n) + shoeLeafError stringChar($ln,$n) a:=shoeReadLispString($ln,$n) a = nil => SoftShoeError([$linepos,:$n],'"lisp escape error") - shoeLeafError ($ln.$n) + shoeLeafError stringChar($ln,$n) [exp,n]:=a n = nil => $n:= $sz @@ -300,7 +321,7 @@ shoeKeyTr w== shoeLeafKey w shoePossFloat (w)== - $n>=$sz or not shoeDigit $ln.$n => shoeLeafKey w + $n>=$sz or not shoeDigit stringChar($ln,$n) => shoeLeafKey w w := shoeInteger() shoeExponent('"0",w) @@ -338,7 +359,7 @@ shoeS()== a := shoeEsc() b := a => - str := strconc(str,$ln.$n) + str := strconc(str,charString stringChar($ln,$n)) $n := $n+1 shoeS() shoeS() @@ -348,7 +369,7 @@ shoeS()== shoeIdEnd(line,n)== - while n<#line and shoeIdChar line.n repeat + while n<#line and shoeIdChar stringChar(line,n) repeat n := n+1 n @@ -388,7 +409,7 @@ shoeInteger() == shoeInteger1(zro) == n := $n l := $sz - while $n <l and shoeDigit($ln.$n) repeat + while $n <l and shoeDigit stringChar($ln,$n) repeat $n := $n+1 $n=l or QENUM($ln,$n)~=shoeESCAPE => n = $n and zro => '"0" @@ -403,7 +424,7 @@ shoeIntValue(s) == ns := #s ival := 0 for i in 0..ns-1 repeat - d := shoeOrdToNum s.i + d := shoeOrdToNum stringChar(s,i) ival := 10*ival + d ival @@ -429,7 +450,7 @@ shoeExponent(a,w)== $n >= $sz => $n := n shoeLeafFloat(a,w,0) - shoeDigit($ln.$n) => + shoeDigit stringChar($ln,$n) => e := shoeInteger() e := shoeIntValue e shoeLeafFloat(a,w,e) @@ -439,7 +460,7 @@ shoeExponent(a,w)== $n >= $sz => $n := n shoeLeafFloat(a,w,0) - shoeDigit($ln.$n) => + shoeDigit stringChar($ln,$n) => e := shoeInteger() e := shoeIntValue e shoeLeafFloat(a,w,(c1=shoeMINUSCOMMENT => MINUS e; e)) @@ -454,7 +475,7 @@ shoeError()== SoftShoeError([$linepos,:n], strconc( '"The character whose number is ", toString QENUM($ln,n),'" is not a Boot character")) - shoeLeafError ($ln.n) + shoeLeafError stringChar($ln,n) shoeOrdToNum x== digit? x |