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parser enhancement: allow keywords after dots

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This commit is contained in:
Andreas Rumpf
2017-07-11 00:54:47 +02:00
parent 5932ad9ae8
commit 76cf4f4c1b
2 changed files with 34 additions and 24 deletions
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12
doc/grammar.txt
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@@ -22,7 +22,7 @@ plusExpr = mulExpr (OP8 optInd mulExpr)*
mulExpr = dollarExpr (OP9 optInd dollarExpr)*
dollarExpr = primary (OP10 optInd primary)*
symbol = '`' (KEYW|IDENT|literal|(operator|'('|')'|'['|']'|'{'|'}'|'=')+)+ '`'
| IDENT | 'addr' | 'type'
| IDENT | KEYW
exprColonEqExpr = expr (':'|'=' expr)?
exprList = expr ^+ comma
dotExpr = expr '.' optInd symbol
@@ -81,7 +81,6 @@ paramList = '(' declColonEquals ^* (comma/semicolon) ')'
paramListArrow = paramList? ('->' optInd typeDesc)?
paramListColon = paramList? (':' optInd typeDesc)?
doBlock = 'do' paramListArrow pragmas? colcom stmt
doBlocks = doBlock ^* IND{=}
procExpr = 'proc' paramListColon pragmas? ('=' COMMENT? stmt)?
distinct = 'distinct' optInd typeDesc
expr = (ifExpr
@@ -98,10 +97,11 @@ primary = typeKeyw typeDescK
typeDesc = simpleExpr
typeDefAux = simpleExpr
| 'concept' typeClass
macroColon = ':' stmt? ( IND{=} 'of' exprList ':' stmt
| IND{=} 'elif' expr ':' stmt
| IND{=} 'except' exprList ':' stmt
| IND{=} 'else' ':' stmt )*
postExprBlocks = ':' stmt? ( IND{=} doBlock
| IND{=} 'of' exprList ':' stmt
| IND{=} 'elif' expr ':' stmt
| IND{=} 'except' exprList ':' stmt
| IND{=} 'else' ':' stmt )*
exprStmt = simpleExpr
(( '=' optInd expr colonBody? )
/ ( expr ^+ comma