From bb85dcc57cc3c0fff6cc9dc09540d58fef400d6f Mon Sep 17 00:00:00 2001
From: Ryo Nihei <nihei.dev@gmail.com>
Date: Sun, 29 Aug 2021 23:40:10 +0900
Subject: Add precedences and associativities to the description file

---
 grammar/parsing_table.go | 30 +++++++++++++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

(limited to 'grammar/parsing_table.go')

diff --git a/grammar/parsing_table.go b/grammar/parsing_table.go
index fe5a619..a82ef60 100644
--- a/grammar/parsing_table.go
+++ b/grammar/parsing_table.go
@@ -347,6 +347,19 @@ func (b *lrTableBuilder) genDescription(tab *ParsingTable, gram *Grammar) (*spec
 				term.Pattern = pat
 			}
 
+			prec := b.precAndAssoc.terminalPrecedence(sym.num())
+			if prec != precNil {
+				term.Precedence = prec
+			}
+
+			assoc := b.precAndAssoc.terminalAssociativity(sym.num())
+			switch assoc {
+			case assocTypeLeft:
+				term.Associativity = "l"
+			case assocTypeRight:
+				term.Associativity = "r"
+			}
+
 			terms[sym.num()] = term
 		}
 	}
@@ -382,11 +395,26 @@ func (b *lrTableBuilder) genDescription(tab *ParsingTable, gram *Grammar) (*spec
 				}
 			}
 
-			prods[p.num.Int()] = &spec.Production{
+			prod := &spec.Production{
 				Number: p.num.Int(),
 				LHS:    p.lhs.num().Int(),
 				RHS:    rhs,
 			}
+
+			prec := b.precAndAssoc.productionPredence(p.num)
+			if prec != precNil {
+				prod.Precedence = prec
+			}
+
+			assoc := b.precAndAssoc.productionAssociativity(p.num)
+			switch assoc {
+			case assocTypeLeft:
+				prod.Associativity = "l"
+			case assocTypeRight:
+				prod.Associativity = "r"
+			}
+
+			prods[p.num.Int()] = prod
 		}
 	}
 
-- 
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