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44 lines
1.3 KiB
Plaintext
44 lines
1.3 KiB
Plaintext
%name pluralParse
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%token_type {int}
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%extra_argument {struct parse_state *s}
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%right T_QMARK.
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%left T_OR.
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%left T_AND.
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%left T_EQ T_NE.
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%left T_LT T_LE T_GT T_GE.
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%left T_ADD T_SUB.
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%left T_MUL T_DIV T_MOD.
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%right T_NOT.
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%nonassoc T_COLON T_N T_LPAREN T_RPAREN.
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%include {
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#include <assert.h>
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struct parse_state {
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int num;
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int res;
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};
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}
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input ::= expr(A). { s->res = A; }
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expr(A) ::= expr(B) T_QMARK expr(C) T_COLON expr(D). { A = B ? C : D; }
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expr(A) ::= expr(B) T_OR expr(C). { A = B || C; }
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expr(A) ::= expr(B) T_AND expr(C). { A = B && C; }
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expr(A) ::= expr(B) T_EQ expr(C). { A = B == C; }
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expr(A) ::= expr(B) T_NE expr(C). { A = B != C; }
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expr(A) ::= expr(B) T_LT expr(C). { A = B < C; }
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expr(A) ::= expr(B) T_LE expr(C). { A = B <= C; }
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expr(A) ::= expr(B) T_GT expr(C). { A = B > C; }
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expr(A) ::= expr(B) T_GE expr(C). { A = B >= C; }
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expr(A) ::= expr(B) T_ADD expr(C). { A = B + C; }
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expr(A) ::= expr(B) T_SUB expr(C). { A = B - C; }
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expr(A) ::= expr(B) T_MUL expr(C). { A = B * C; }
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expr(A) ::= expr(B) T_DIV expr(C). { A = B / C; }
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expr(A) ::= expr(B) T_MOD expr(C). { A = B % C; }
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expr(A) ::= T_NOT expr(B). { A = !B; }
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expr(A) ::= T_N. { A = s->num; }
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expr(A) ::= T_NUM(B). { A = B; }
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expr(A) ::= T_LPAREN expr(B) T_RPAREN. { A = B; }
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