Replaced old eval with "expand analyze evaluate-eproc"

[scheme.forth.jl.git] / src / scheme.4th

diff --git a/src/scheme.4th b/src/scheme.4th
index 4d5e33b..a32ee45 100644 (file)
--- a/src/scheme.4th
+++ b/src/scheme.4th
@@ -1315,95 +1315,6 @@ parse-idx-stack parse-idx-sp !
 : quote-body ( quote-obj -- quote-body-obj )
     cdr car ;
 
-: quasiquote? ( obj -- obj bool )
-    quasiquote-symbol tagged-list? ;
-
-: unquote? ( obj -- obj bool )
-    unquote-symbol tagged-list? ;
-
-: unquote-splicing? ( obj -- obj bool )
-    unquote-splicing-symbol tagged-list? ;
-
-: eval-unquote ( env obj -- res )
-    cdr ( env args )
-
-    nil? if
-        except-message: ." no arguments to unquote." recoverable-exception throw
-    then
-
-    2dup cdr
-    nil? false = if
-        except-message: ." too many arguments to unquote." recoverable-exception throw
-    then
-
-    2drop car 2swap eval
-;
-
-( Create a new list from elements of l1 consed on to l2 )
-: join-lists ( l2 l1 -- l3 )
-    nil? if 2drop exit then
-
-    2dup car
-    -2rot cdr
-    recurse cons
-;
-
-defer eval-quasiquote-item
-: eval-quasiquote-pair ( env obj -- res )
-    2over 2over ( env obj env obj )
-
-    cdr eval-quasiquote-item
-
-    -2rot car ( cdritem env objcar )
-
-    unquote-splicing? if
-        eval-unquote ( cdritems caritem )
-
-        2swap nil? if
-            2drop
-        else
-            2swap join-lists
-        then
-    else
-        eval-quasiquote-item ( cdritems caritem )
-        2swap cons
-    then
-
-;
-
-:noname ( env obj )
-    nil? if
-        2swap 2drop exit
-    then
-
-    unquote? if
-        eval-unquote exit
-    then
-
-    pair-type istype? if
-        eval-quasiquote-pair exit
-    then
-
-    2swap 2drop
-; is eval-quasiquote-item
-
-: eval-quasiquote ( obj env -- res )
-    2swap cdr ( env args )
-
-    nil? if
-        except-message: ." no arguments to quasiquote." recoverable-exception throw
-    then
-
-    2dup cdr ( env args args-cdr )
-    nil? false = if
-        except-message: ." too many arguments to quasiquote." recoverable-exception throw
-    then
-
-    2drop car ( env arg )
-
-    eval-quasiquote-item
-;
-
 : variable? ( obj -- obj bool )
     symbol-type istype? ;
 
@@ -1618,118 +1529,6 @@ hide env
     2swap
 ;
 
-: apply ( proc argvals -- result )
-        2swap dup case
-            primitive-proc-type of
-                drop execute     
-            endof
-
-            compound-proc-type of
-                2dup procedure-body ( argvals proc body )
-                -2rot 2dup procedure-params ( body argvals proc argnames )
-                -2rot procedure-env ( body argnames argvals procenv )
-
-                -2rot 2swap
-                flatten-proc-args
-                2swap 2rot
-
-                extend-env ( body env )
-
-                eval-sequence
-
-                R> drop ['] eval goto-deferred  \ Tail call optimization
-            endof
-
-            except-message: ." object '" drop print ." ' not applicable." recoverable-exception throw
-        endcase
-;
-
-:noname ( obj env -- result )
-    2swap
-
-    \ --- DEBUG ---
-    ( 
-      fg yellow ." Evaluating: " bold 2dup print reset-term
-      space fg green ." PS: " bold depth . reset-term
-      space fg blue  ." RS: " bold RSP@ RSP0 - . reset-term cr
-    )
-
-    self-evaluating? if
-        2swap 2drop
-        exit
-    then
-
-    quote? if
-        quote-body
-        2swap 2drop
-        exit
-    then
-
-    quasiquote? if
-        2swap eval-quasiquote
-        exit
-    then
-
-    variable? if
-        2swap lookup-var
-        exit
-    then
-
-    definition? if
-        2swap eval-definition
-        exit
-    then
-
-    assignment? if
-        2swap eval-assignment
-        exit
-    then
-
-    macro-definition? if
-        2swap eval-define-macro
-        exit
-    then
-
-    if? if
-        2over 2over
-        if-predicate
-        2swap eval 
-
-        true? if
-            if-consequent
-        else
-            if-alternative
-        then
-
-        2swap
-        ['] eval goto-deferred
-    then
-
-    lambda? if
-        2dup lambda-parameters
-        2swap lambda-body
-        2rot make-procedure
-        exit
-    then
-
-    application? if
-
-        2over 2over ( env exp env exp )
-        operator ( env exp env opname )
-
-        2swap eval ( env exp proc )
-
-        -2rot ( proc env exp )
-        operands 2swap ( proc operands env )
-        list-of-vals ( proc argvals )
-
-        apply
-        exit
-    then
-
-    except-message: ." tried to evaluate object with unknown type." recoverable-exception throw
-; is eval
-
 \ }}}
 
 \ ---- Analyze ----
@@ -1752,8 +1551,6 @@ hide env
     \ Final element of eproc list is primitive procedure
     drop \ dump type signifier
 
-    .s cr \ DEBUG
-
     goto \ jump straight to primitive procedure (executor)
 ;
 
@@ -1970,6 +1767,11 @@ hide env
         exit
     then
 
+\    macro-definition? if
+\        analyze-macro-definition
+\        exit
+\    then
+
     assignment? if
         analyze-assignment
         exit
@@ -2030,33 +1832,6 @@ hide env
     R> drop ['] expand goto-deferred
 ;
 
-: expand-quasiquote-item ( exp -- result )
-    nil? if exit then
-
-    unquote? if
-        unquote-symbol 2swap cdr car expand nil cons cons
-        exit
-    then
-
-    unquote-splicing? if
-        unquote-splicing-symbol 2swap cdr car expand nil cons cons
-        exit
-    then
-    
-    pair-type istype? if
-        2dup car recurse
-        2swap cdr recurse
-        cons
-    then
-;
-
-: expand-quasiquote ( exp -- result )
-    quasiquote-symbol 2swap cdr
-
-    expand-quasiquote-item
-
-    cons ;
-
 : expand-definition ( exp -- result )
     define-symbol 2swap
 
@@ -2126,8 +1901,6 @@ hide env
 
     quote? if exit then
 
-    quasiquote? if expand-quasiquote exit then
-
     definition? if expand-definition exit then
 
     assignment? if expand-assignment exit then
@@ -2144,6 +1917,10 @@ hide env
 
 \ }}}
 
+:noname ( exp env -- res )
+    2swap expand analyze 2swap evaluate-eproc
+; is eval
+
 \ ---- Print ---- {{{
 
 : printfixnum ( fixnum -- ) drop 0 .R ;
@@ -2368,8 +2145,6 @@ variable gc-stack-depth
 
         2swap 2drop ( port obj )
 
-        expand
-
         global-env obj@ eval ( port res )
     again
 ;
@@ -2398,8 +2173,6 @@ variable gc-stack-depth
         true exit
     then
 
-    expand
-
     global-env obj@ eval
 
     fg cyan ." ; " print reset-term