diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ChangeLog | 6 | ||||
| -rw-r--r-- | src/interp/parse.boot | 35 |
2 files changed, 29 insertions, 12 deletions
diff --git a/src/ChangeLog b/src/ChangeLog index 7c025063..ff7d3a44 100644 --- a/src/ChangeLog +++ b/src/ChangeLog @@ -1,3 +1,9 @@ +2009-01-10 Gabriel Dos Reis <gdr@cs.tamu.edu> + + * interp/parse.boot ($parsingType): New. + (parseType): New. Parse types forms. + (parseTypeList): New. Parse list of type forms. + 2009-01-09 Gabriel Dos Reis <gdr@cs.tamu.edu> * interp/compiler.boot (compPredicate): Rename from compBoolean. diff --git a/src/interp/parse.boot b/src/interp/parse.boot index eba9defb..cff6ef7c 100644 --- a/src/interp/parse.boot +++ b/src/interp/parse.boot @@ -1,6 +1,6 @@ -- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd. -- All rights reserved. --- Copyright (C) 2007-2008, Gabriel Dos Reis. +-- Copyright (C) 2007-2009, Gabriel Dos Reis. -- All rights reserved. -- -- Redistribution and use in source and binary forms, with or without @@ -51,6 +51,9 @@ $defOp := nil ++ to Lisp. That usage is being phased out though. $normalizeTree := false +++ True if we know we are parsing a form supposed to designate a type. +$parsingType := false + parseTransform: %ParseForm -> %Form parseTransform x == $defOp: local:= nil @@ -68,7 +71,13 @@ parseTran x == r SYMBOLP u and (fn:= GET(u,'parseTran)) => FUNCALL(fn,x) [parseTran op,:parseTranList argl] - + +parseType t == + $parsingType: local := true + parseTran t + +parseTypeList l == + mapInto(l, function parseType) parseAtom: %Atom -> %Form parseAtom x == @@ -145,7 +154,7 @@ parseColon: %ParseForm -> %Form parseColon u == u isnt [":",:.] => systemErrorHere ["parseColon",u] u is [":",x] => [":",parseTran x] - u is [":",x,typ] => [":",parseTran x,parseTran typ] + u is [":",x,typ] => [":",parseTran x,parseType typ] u -- ??? This parser is unused at the moment. @@ -167,23 +176,23 @@ transUnCons u == parseCoerce: %ParseForm -> %Form parseCoerce t == t isnt [.,x,typ] => systemErrorHere ["parseCoerce",t] - ["::",parseTran x,parseTran typ] + ["::",parseTran x,parseType typ] parseAtSign: %ParseForm -> %Form parseAtSign t == t isnt [.,x,typ] => systemErrorHere ["parseAtSign",t] - ["@",parseTran x,parseTran typ] + ["@",parseTran x,parseType typ] parsePretend: %ParseForm -> %Form parsePretend t == t isnt ["pretend",x,typ] => systemErrorHere ["parsePretend",t] - ["pretend",parseTran x,parseTran typ] + ["pretend",parseTran x,parseType typ] parseAtAt: %ParseForm -> %Form parseAtAt t == t isnt ["@@",x,typ] => systemErrorHere ["parseAtAt",t] - ["@@",parseTran x,parseTran typ] + ["@@",parseTran x,parseType typ] parseHas: %ParseForm -> %Form parseHas t == @@ -208,7 +217,7 @@ parseDEF: %ParseForm -> %Form parseDEF t == t isnt ["DEF",$lhs,tList,specialList,body] => systemErrorHere ["parseDEF",t] setDefOp $lhs - ["DEF",parseLhs $lhs,parseTranList tList,parseTranList specialList, + ["DEF",parseLhs $lhs,parseTypeList tList,parseTranList specialList, parseTranCheckForRecord(body,opOf $lhs)] parseLhs: %ParseForm -> %Form @@ -222,7 +231,7 @@ parseMDEF: %ParseForm -> %Form parseMDEF t == t isnt ["MDEF",$lhs,tList,specialList,body] => systemErrorHere ["parseMDEF",t] - ["MDEF",parseTran $lhs,parseTranList tList,parseTranList specialList, + ["MDEF",parseTran $lhs,parseTypeList tList,parseTranList specialList, parseTranCheckForRecord(body,opOf $lhs)] parseTranCheckForRecord: (%ParseForm,%ParseForm) -> %Form @@ -236,6 +245,7 @@ parseTranCheckForRecord(x,op) == parseCategory: %ParseForm -> %Form parseCategory t == t isnt ["CATEGORY",:x] => systemErrorHere ["parseCategory",t] + $parsingType: local := true l:= parseTranList parseDropAssertions x key:= CONTAINED("$",l) => "domain" @@ -325,7 +335,7 @@ parseReturn t == parseJoin: %ParseForm -> %Form parseJoin t == t isnt ["Join",:l] => systemErrorHere ["parseJoin",t] - ["Join",:fn parseTranList l] where + ["Join",:fn parseTypeList l] where fn l == null l => nil l is [["Join",:x],:y] => [:x,:fn y] @@ -377,8 +387,9 @@ parseIf t == --this assumes that l has no exits a is ["IF", =p,a',.] => ["IF",p,a',b] b is ["IF", =p,.,b'] => ["IF",p,a,b'] - makeSimplePredicateOrNil p is ["SEQ",:s,["exit",1,val]] => - parseTran ["SEQ",:s,["exit",1,incExitLevel ["IF",val,a,b]]] + not $parsingType and + (makeSimplePredicateOrNil p is ["SEQ",:s,["exit",1,val]]) => + parseTran ["SEQ",:s,["exit",1,incExitLevel ["IF",val,a,b]]] ["IF",p,a,b] makeSimplePredicateOrNil: %ParseForm -> %Form |