TermProgsImpl:
CEDAR
PROGRAM
IMPORTS CommandTool, FS, IO, OrderedSymbolTableRef, Rope
EXPORTS TermProgs
= {OPEN TermProgs;
TermData: TYPE = REF TermDataRep;
TermDataRep:
TYPE =
RECORD [
termName, bcdBase, bcdDir: ROPE ← NIL,
term: Term ← NIL];
terms: OrderedSymbolTableRef.Table;
GetTerm:
PUBLIC
PROC [name:
ROPE, cmd: Commander.Handle]
RETURNS [term: Term] = {
td: TermData ← NARROW[terms.Lookup[name]];
IF td = NIL THEN RETURN [NIL];
IF td.term # NIL THEN RETURN [td.term];
[] ← CommandTool.DoCommand[
commandLine:
IO.PutFR[
"Push %g\nRun %g\nPop",
IO.rope[td.bcdDir],
IO.rope[td.bcdBase]],
parent: cmd];
td ← NARROW[terms.Lookup[name]];
term ← IF td # NIL THEN td.term ELSE NIL;
};
RegTerm:
PUBLIC
PROC [name:
ROPE, term: Term] = {
td: TermData ← NARROW[terms.Lookup[name]];
IF td =
NIL
THEN {
td ← NEW [TermDataRep ← [termName: name]];
terms.Insert[td]};
td.term ← term;
};
EnumerateTerms:
PUBLIC
PROC [consume:
PROC [name:
ROPE, term: Term]] = {
PerTermData:
PROC [item:
REF
ANY]
RETURNS [stop:
BOOL] = {
td: TermData ← NARROW[item];
consume[td.termName, td.term];
stop ← FALSE};
terms.EnumerateIncreasing[PerTermData];
};
CompareTermDatas:
PROC [r1, r2:
REF
ANY]
RETURNS [c: Basics.Comparison] = {
Key:
PROC [ra:
REF
ANY]
RETURNS [kr:
ROPE] = {
WITH ra
SELECT
FROM
r: ROPE => kr ← r;
td: TermData => kr ← td.termName;
ENDCASE => ERROR};
c ← Key[r1].Compare[Key[r2], FALSE]};
Start:
PROC = {
ConsumeTerms:
PROC [fullFName:
ROPE]
RETURNS [continue:
BOOL] = {
termsFName, bcdDir: ROPE;
cp: FS.ComponentPositions;
fromTerms: IO.STREAM ← NIL;
continue ← TRUE;
[termsFName, cp] ← FS.ExpandName[fullFName];
IF termsFName.Substr[cp.server.start, cp.server.length].Length[] > 0 THEN ERROR;
IF termsFName.Substr[cp.dir.start, cp.dir.length].Length[] > 0 THEN ERROR;
bcdDir ← Rope.Cat[
"[]<>",
termsFName.Substr[cp.subDirs.start, cp.subDirs.length]
];
fromTerms ← FS.StreamOpen[termsFName];
FOR i:
INT ← fromTerms.SkipWhitespace[], fromTerms.SkipWhitespace[]
WHILE
NOT fromTerms.EndOf[]
DO
termName: ROPE ← fromTerms.GetRopeLiteral[];
td: TermData ←
NEW [TermDataRep ← [
termName: termName,
bcdBase: termsFName.Substr[cp.base.start, cp.base.length],
bcdDir: bcdDir
]];
terms.Insert[td];
ENDLOOP;
fromTerms.Close[];
};
terms ← OrderedSymbolTableRef.CreateTable[CompareTermDatas];
FS.EnumerateForNames["Em*.terms!H", ConsumeTerms];
};
Start[];
}.