diff options
Diffstat (limited to 'src/interp/spad-parser.boot')
| -rw-r--r-- | src/interp/spad-parser.boot | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/interp/spad-parser.boot b/src/interp/spad-parser.boot index 7a381471..a7780674 100644 --- a/src/interp/spad-parser.boot +++ b/src/interp/spad-parser.boot @@ -154,6 +154,10 @@ parseInfixWith() == parseWith() and pushReduction('parseInfixWith,["Join",popStack2(),popStack1()]) +parseElseClause() == + currentSymbol() is "if" => PARSE_-Conditional() + PARSE_-Expression() + ++ domain inlining. Same syntax as import directive; except ++ deliberate restriction on naming one type at a time. ++ -- gdr, 2009-02-28. @@ -177,6 +181,41 @@ parseQuantifiedVariable() == pushReduction('parseQuantifiedVariable,[":",popStack2(),popStack1()]) nil +++ We should factorize these boilerplates +parseReturn() == + matchAdvanceKeyword "return" => + compulsorySyntax PARSE_-Expression() + pushReduction('parseReturn,["return",popStack1()]) + nil + +parseThrow() == + matchAdvanceKeyword "throw" => + compulsorySyntax PARSE_-Expression() + pushReduction('parseReturn,["%Throw",popStack1()]) + nil + +parseExit() == + matchAdvanceKeyword "exit" => + x := + PARSE_-Expression() => popStack1() + "$NoValue" + pushReduction('parseExit,["exit",x]) + nil + +parseLeave() == + matchAdvanceKeyword "leave" => + x := + PARSE_-Expression() => popStack1() + "$NoValue" + pushReduction('parseLeave,["leave",x]) + nil + +parseJump() == + s := currentSymbol() => + advanceToken() + pushReduction('parseJump,s) + nil + parseNewExpr() == matchString '")" => processSynonyms() |