diff options
Diffstat (limited to 'src/boot/ast.boot')
| -rw-r--r-- | src/boot/ast.boot | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/src/boot/ast.boot b/src/boot/ast.boot index 61fc648a..75e582e6 100644 --- a/src/boot/ast.boot +++ b/src/boot/ast.boot @@ -125,6 +125,16 @@ bfGenSymbol()== $GenVarCounter := $GenVarCounter+1 makeSymbol strconc('"bfVar#",toString $GenVarCounter) +bfLetVar: () -> %Symbol +bfLetVar() == + $letGenVarCounter := $letGenVarCounter + 1 + makeSymbol strconc('"LETTMP#",toString $letGenVarCounter) + +bfIsVar: () -> %Symbol +bfIsVar() == + $isGenVarCounter := $isGenVarCounter + 1 + makeSymbol strconc('"ISTMP#",toString $isGenVarCounter) + bfColon: %Thing -> %Form bfColon x== ["COLON",x] @@ -545,8 +555,7 @@ bfLET1(lhs,rhs) == l2 is ["PROGN",:.] => bfMKPROGN [l1,:rest l2] if symbol? first l2 then l2 := [l2,:nil] bfMKPROGN [l1,:l2,name] - g := makeSymbol strconc('"LETTMP#",toString $letGenVarCounter) - $letGenVarCounter := $letGenVarCounter + 1 + g := bfLetVar() rhs1 := ['L%T,g,rhs] let1 := bfLET1(lhs,g) let1 is ["PROGN",:.] => bfMKPROGN [rhs1,:rest let1] @@ -582,8 +591,7 @@ bfLET2(lhs,rhs) == lhs is ['append,var1,var2] => patrev := bfISReverse(var2,var1) rev := ['reverse,rhs] - g := makeSymbol strconc('"LETTMP#", toString $letGenVarCounter) - $letGenVarCounter := $letGenVarCounter + 1 + g := bfLetVar() l2 := bfLET2(patrev,g) if cons? l2 and atom first l2 then l2 := [l2,:nil] @@ -607,7 +615,7 @@ bfLET2(lhs,rhs) == bfLET(lhs,rhs) == - $letGenVarCounter : local := 1 + $letGenVarCounter : local := 0 bfLET1(lhs,rhs) addCARorCDR(acc,expr) == @@ -639,8 +647,8 @@ bfISApplication(op,left,right)== [op ,left,right] bfIS(left,right)== - $isGenVarCounter: local :=1 - $inDefIS:local :=true + $isGenVarCounter: local := 0 + $inDefIS: local :=true bfIS1(left,right) bfISReverse(x,a) == @@ -666,8 +674,7 @@ bfIS1(lhs,rhs) == bfAND [bfIS1(lhs,d),bfMKPROGN [l,'T]] rhs is ["EQUAL",a] => bfQ(lhs,a) cons? lhs => - g := makeSymbol strconc('"ISTMP#",toString $isGenVarCounter) - $isGenVarCounter := $isGenVarCounter + 1 + g := bfIsVar() bfMKPROGN [['L%T,g,lhs],bfIS1(g,rhs)] rhs is ['CONS,a,b] => a is "DOT" => @@ -683,8 +690,7 @@ bfIS1(lhs,rhs) == bfAND [['CONSP,lhs],a1,b1] rhs is ['append,a,b] => patrev := bfISReverse(b,a) - g := makeSymbol strconc('"ISTMP#",toString $isGenVarCounter) - $isGenVarCounter := $isGenVarCounter + 1 + g := bfIsVar() rev := bfAND [['CONSP,lhs],['PROGN,['L%T,g,['reverse,lhs]],'T]] l2 := bfIS1(g,patrev) if cons? l2 and atom first l2 then l2 := [l2,:nil] |