+## ------------------------- ##
+## Token declaration order. ##
+## ------------------------- ##
+
+# This test checks that token are declared left to right when in a precedence
+# statement.
+
+AT_SETUP([Token declaration order])
+
+AT_BISON_OPTION_PUSHDEFS
+
+AT_DATA_GRAMMAR([[input.y]],
+[[%code {
+ #include <stdio.h>
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
+}
+%token A B C
+%token D
+%right E F G
+%right H I
+%right J
+%left K
+%left L M N
+%nonassoc O P Q
+%precedence R S T U
+%precedence V W
+%%
+exp: A
+%%
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE[
+int main (void)
+{
+ assert (A < B);
+ assert (B < C);
+ assert (C < D);
+ assert (D < E);
+ assert (E < F);
+ assert (F < G);
+ assert (G < H);
+ assert (H < I);
+ assert (I < J);
+ assert (J < K);
+ assert (K < L);
+ assert (L < M);
+ assert (M < N);
+ assert (N < O);
+ assert (O < P);
+ assert (P < Q);
+ assert (Q < R);
+ assert (R < S);
+ assert (S < T);
+ assert (T < U);
+ assert (U < V);
+ assert (V < W);
+ return 0;
+}
+]])
+
+AT_BISON_CHECK([-o input.c input.y])
+AT_COMPILE([input])
+
+AT_PARSER_CHECK([./input])
+
+AT_BISON_OPTION_POPDEFS
+
+AT_CLEANUP
+
+
+## --------------------------------------------------- ##
+## Token declaration order: literals vs. identifiers. ##
+## --------------------------------------------------- ##
+
+# This test checks that when several tokens are declared by the same keyword,
+# some of them defined as a character ('a'), others as simple textual reference
+# (A), they are declared correctly left to right.
+# Previously, the following test would declare the states in the order 'o' 'p'
+# M N, instead of M N 'o' 'p'.
+
+AT_SETUP([Token declaration order: literals vs. identifiers])
+
+AT_DATA_GRAMMAR([[input.y]],
+[[%token 'a' 'b' C D
+%token E F 'g' 'h'
+%right 'i' 'j' K L
+%right M N 'o' 'p'
+%%
+exp: 'a'
+ | 'b'
+ | C
+ | D
+ | E
+ | F
+ | 'g'
+ | 'h'
+ | 'i'
+ | 'j'
+ | K
+ | L
+ | M
+ | N
+ | 'o'
+ | 'p'
+;
+%%
+]])
+
+AT_BISON_CHECK([[--report=all -o input.c input.y]], 0, [], [ignore])
+AT_CHECK([[cat input.output | sed -n '/^State 0$/,/^State 1$/p']], 0,
+[[State 0
+
+ 0 $accept: . exp $end
+ 1 exp: . 'a'
+ 2 | . 'b'
+ 3 | . C
+ 4 | . D
+ 5 | . E
+ 6 | . F
+ 7 | . 'g'
+ 8 | . 'h'
+ 9 | . 'i'
+ 10 | . 'j'
+ 11 | . K
+ 12 | . L
+ 13 | . M
+ 14 | . N
+ 15 | . 'o'
+ 16 | . 'p'
+
+ 'a' shift, and go to state 1
+ 'b' shift, and go to state 2
+ C shift, and go to state 3
+ D shift, and go to state 4
+ E shift, and go to state 5
+ F shift, and go to state 6
+ 'g' shift, and go to state 7
+ 'h' shift, and go to state 8
+ 'i' shift, and go to state 9
+ 'j' shift, and go to state 10
+ K shift, and go to state 11
+ L shift, and go to state 12
+ M shift, and go to state 13
+ N shift, and go to state 14
+ 'o' shift, and go to state 15
+ 'p' shift, and go to state 16
+
+ exp go to state 17
+
+
+State 1
+]])
+
+AT_CLEANUP
+
+
+## ------------------------------- ##
+## Useless associativity warning. ##
+## ------------------------------- ##
+
+AT_SETUP([Useless associativity warning])
+
+AT_DATA([[input.y]],
+[[%token EQ "=" PL "+" ST "*" LP "("
+%nonassoc "="
+%left "+"
+%left "*"
+%precedence "("
+%%
+stmt:
+ exp
+| "var" "=" exp
+;
+
+exp:
+ exp "+" exp
+| exp "*" "num"
+| "(" exp ")"
+| "num"
+;
+]])
+
+AT_BISON_CHECK([-Wprecedence input.y], 0, [],
+[[input.y:2.1-9: warning: useless precedence and associativity for "=" [-Wprecedence]
+input.y:4.1-5: warning: useless associativity for "*", use %precedence [-Wprecedence]
+input.y:5.1-11: warning: useless precedence for "(" [-Wprecedence]
+]])
+
+AT_CLEANUP
+
+
+## ---------------------------- ##
+## Useless precedence warning. ##
+## ---------------------------- ##
+
+AT_SETUP([Useless precedence warning])
+
+AT_DATA([[input.y]],
+[[%token A B U V W X Y Z
+%precedence Z
+%left X
+%precedence Y
+%left W
+%right V
+%nonassoc U
+%%
+a: b
+ | a U b
+ | f
+;
+b: c
+ | b V c
+;
+c: d
+ | c W d
+;
+d: A
+ | d X d
+ | d Y A
+;
+f: B
+ | f Z B
+;
+]])
+
+AT_BISON_CHECK([-Wprecedence -fcaret -o input.c input.y], 0, [],
+[[input.y:7.1-9: warning: useless precedence and associativity for U [-Wprecedence]
+ %nonassoc U
+ ^^^^^^^^^
+input.y:6.1-6: warning: useless precedence and associativity for V [-Wprecedence]
+ %right V
+ ^^^^^^
+input.y:5.1-5: warning: useless precedence and associativity for W [-Wprecedence]
+ %left W
+ ^^^^^
+input.y:2.1-11: warning: useless precedence for Z [-Wprecedence]
+ %precedence Z
+ ^^^^^^^^^^^
+]])
+
+AT_CLEANUP
+
projects / bison.git / blobdiff