diff options
Diffstat (limited to 'src/interp/parse.boot')
| -rw-r--r-- | src/interp/parse.boot | 27 |
1 files changed, 8 insertions, 19 deletions
diff --git a/src/interp/parse.boot b/src/interp/parse.boot index f980de7c..8fd23a1c 100644 --- a/src/interp/parse.boot +++ b/src/interp/parse.boot @@ -97,11 +97,6 @@ parseConstruct u == $insideConstructIfTrue: local:= true [first u,:parseTranList rest u] --- ??? This parser is unused at the moment. -parseLeftArrow: %ParseForm -> %Form -parseLeftArrow u == - parseTran ["%LET",:rest u] - parseIs: %ParseForm -> %Form parseIs t == t isnt ["is",a,b] => systemErrorHere ["parseIs",t] @@ -139,19 +134,14 @@ transIs1 u == [h,:v] u -parseLET: %ParseForm -> %Form -parseLET t == - t isnt ["%LET",x,y] => systemErrorHere ["parseLET",t] - p := ["%LET",parseTran x,parseTranCheckForRecord(y,opOf x)] - opOf x = "cons" => ["%LET",transIs p.1,p.2] +parseAssign: %ParseForm -> %Form +parseAssign t == + t isnt [":=",x,y] => systemErrorHere ["parseAssign",t] + p := [":=",parseTran x,parseTranCheckForRecord(y,opOf x)] + opOf x = "cons" => [":=",transIs p.1,p.2] p -parseLETD: %ParseForm -> %Form -parseLETD t == - t isnt ["LETD",x,y] => systemErrorHere ["parseLETD",t] - ["%Decl",parseTran x,parseTran y] - parseColon: %ParseForm -> %Form parseColon u == u isnt [":",:.] => systemErrorHere ["parseColon",u] @@ -355,7 +345,7 @@ makeSimplePredicateOrNil: %ParseForm -> %Form makeSimplePredicateOrNil p == isSimple p => nil u:= isAlmostSimple p => u - wrapSEQExit [["%LET",g:= gensym(),p],g] + wrapSEQExit [[":=",g:= gensym(),p],g] parseWhere: %List %Form -> %Form @@ -378,7 +368,7 @@ transSeq l == l is [x] => decExitLevel x [item,:tail] := l item is ["SEQ",:l,["exit",1,["IF",p,["exit", =2,q],"%noBranch"]]] and - (and/[x is ["%LET",:.] for x in l]) => + (and/[x is [":=",:.] for x in l]) => ["SEQ",:[decExitLevel x for x in l],["exit",1,["IF",decExitLevel p, decExitLevel q,transSeq tail]]] item is ["IF",a,["exit",1,b],"%noBranch"] => @@ -457,8 +447,7 @@ for x in [[":", :"parseColon"],_ ["isnt", :"parseIsnt"],_ ["Join", :"parseJoin"],_ ["leave", :"doParseLeave"],_ - ["%LET", :"parseLET"],_ - ["LETD", :"parseLETD"],_ + [":=", :"parseAssign"],_ ["MDEF", :"parseMDEF"],_ ["or", :"parseOr"],_ ["pretend", :"parsePretend"],_ |