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-rw-r--r--src/boot/ast.boot4
-rw-r--r--src/boot/parser.boot5
-rw-r--r--src/boot/strap/ast.clisp12
-rw-r--r--src/boot/strap/parser.clisp6
-rw-r--r--src/boot/strap/tokens.clisp2
-rw-r--r--src/boot/tokens.boot1
6 files changed, 24 insertions, 6 deletions
diff --git a/src/boot/ast.boot b/src/boot/ast.boot
index 7f60ae1b..dbe1231c 100644
--- a/src/boot/ast.boot
+++ b/src/boot/ast.boot
@@ -209,6 +209,9 @@ compFluidize x==
x is ["QUOTE",:.] => x
[compFluidize(first x),:compFluidize(rest x)]
+bfPlace x ==
+ ["%Place",:x]
+
bfTuple x ==
["TUPLE",:x]
@@ -954,6 +957,7 @@ bfTagged(a,b)==
bfAssign(l,r)==
bfTupleP l => bfSetelt(second l,CDDR l ,r)
+ l is ["%Place",:l'] => ["SETF",l',r]
bfLET(l,r)
bfSetelt(e,l,r)==
diff --git a/src/boot/parser.boot b/src/boot/parser.boot
index 909568b9..107a355f 100644
--- a/src/boot/parser.boot
+++ b/src/boot/parser.boot
@@ -1079,7 +1079,10 @@ bpAssignLHS()==
bpEqKey "COLON" => -- variable declaration
bpApplication() or bpTrap()
bpPush bfLocal(bpPop2(),bpPop1())
- bpArgumentList() and (bpEqPeek "DOT" or bpTrap())
+ bpArgumentList() and
+ (bpEqPeek "DOT"
+ or (bpEqPeek "BEC" and bpPush bfPlace bpPop1())
+ or bpTrap())
bpEqKey "DOT" => -- field path
bpList(function bpPrimary,"DOT") and
bpChecknull() and
diff --git a/src/boot/strap/ast.clisp b/src/boot/strap/ast.clisp
index 737250ef..64b6e0f4 100644
--- a/src/boot/strap/ast.clisp
+++ b/src/boot/strap/ast.clisp
@@ -233,6 +233,8 @@
((AND (CONSP |x|) (EQ (CAR |x|) 'QUOTE)) |x|)
(T (CONS (|compFluidize| (CAR |x|)) (|compFluidize| (CDR |x|))))))
+(DEFUN |bfPlace| (|x|) (CONS '|%Place| |x|))
+
(DEFUN |bfTuple| (|x|) (CONS 'TUPLE |x|))
(DEFUN |bfTupleP| (|x|) (AND (CONSP |x|) (EQ (CAR |x|) 'TUPLE)))
@@ -1647,9 +1649,13 @@
(T (LIST 'THE |b| |a|))))
(DEFUN |bfAssign| (|l| |r|)
- (COND
- ((|bfTupleP| |l|) (|bfSetelt| (CADR |l|) (CDDR |l|) |r|))
- (T (|bfLET| |l| |r|))))
+ (PROG (|l'|)
+ (RETURN
+ (COND
+ ((|bfTupleP| |l|) (|bfSetelt| (CADR |l|) (CDDR |l|) |r|))
+ ((AND (CONSP |l|) (EQ (CAR |l|) '|%Place|))
+ (SETQ |l'| (CDR |l|)) (LIST 'SETF |l'| |r|))
+ (T (|bfLET| |l| |r|))))))
(DEFUN |bfSetelt| (|e| |l| |r|)
(COND
diff --git a/src/boot/strap/parser.clisp b/src/boot/strap/parser.clisp
index 434e8513..802fc8bc 100644
--- a/src/boot/strap/parser.clisp
+++ b/src/boot/strap/parser.clisp
@@ -1096,7 +1096,11 @@
((NOT (|bpName|)) NIL)
((|bpEqKey| 'COLON) (OR (|bpApplication|) (|bpTrap|))
(|bpPush| (|bfLocal| (|bpPop2|) (|bpPop1|))))
- (T (AND (|bpArgumentList|) (OR (|bpEqPeek| 'DOT) (|bpTrap|)))
+ (T (AND (|bpArgumentList|)
+ (OR (|bpEqPeek| 'DOT)
+ (AND (|bpEqPeek| 'BEC)
+ (|bpPush| (|bfPlace| (|bpPop1|))))
+ (|bpTrap|)))
(COND
((|bpEqKey| 'DOT)
(AND (|bpList| #'|bpPrimary| 'DOT) (|bpChecknull|)
diff --git a/src/boot/strap/tokens.clisp b/src/boot/strap/tokens.clisp
index c3c5105b..d498edb7 100644
--- a/src/boot/strap/tokens.clisp
+++ b/src/boot/strap/tokens.clisp
@@ -216,7 +216,7 @@
(LIST '|nil| NIL) (LIST '|not| 'NOT)
(LIST '|nreverse| 'NREVERSE) (LIST '|null| 'NULL)
(LIST '|or| 'OR) (LIST '|otherwise| 'T)
- (LIST '|readByte| 'READ-BYTE)
+ (LIST '|property| 'GET) (LIST '|readByte| 'READ-BYTE)
(LIST '|readInteger| 'PARSE-INTEGER)
(LIST '|readLine| 'READ-LINE)
(LIST '|removeDuplicates| 'REMDUP)
diff --git a/src/boot/tokens.boot b/src/boot/tokens.boot
index 6fe50a64..dba38617 100644
--- a/src/boot/tokens.boot
+++ b/src/boot/tokens.boot
@@ -264,6 +264,7 @@ for i in [ _
["null", "NULL"] , _
["or", "OR"] , _
["otherwise", "T"] , _
+ ["property", "GET"] , _
["readByte", "READ-BYTE"], _
["readInteger", "PARSE-INTEGER"], _
["readLine", "READ-LINE"], _