christoph/lecture-compilers
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rework Grammar

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2021-01-31 21:55:47 +01:00
parent 7e233d02a0
commit a2b35ad4da
10 changed files with 298 additions and 261 deletions
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9
stups.grammar
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@ -1,7 +1,4 @@
START: s
EPS: eps
// START, EPS, NTERM, TERM are reserved
// NTERM, TERM are reserved
// Some Grammar-Symbols have to be named this way:
// assignment, declaration (for TypeTable creation)
@ -11,7 +8,7 @@ EPS: eps
// Nonterminals:
NTERM: val type
NTERM: op unary arith_op logic_op compare_op
NTERM: s class_cnt block_cnt
NTERM: S class_cnt block_cnt
NTERM: statement stmt print
NTERM: declaration assignment
NTERM: par_expr expr expr_2 expr_f
@ -64,7 +61,7 @@ compare_op[promote] -> LESS | LESS_EQUAL | GREATER | GREATER_EQUAL | EQUAL | NOT
// -------------------------------------------------------------------------------------------------
// START -> class IDENTIFIER { class_cnt }
s[promote] -> CLASS IDENTIFIER L_BRACE class_cnt R_BRACE | eps
S[promote] -> CLASS IDENTIFIER L_BRACE class_cnt R_BRACE | eps
// class_cnt -> public static void main(String[] args) { block_cnt }
class_cnt[promote delifempty] -> PUBLIC STATIC VOID_TYPE IDENTIFIER_MAIN L_PAREN STRING_TYPE L_BRACKET R_BRACKET IDENTIFIER R_PAREN L_BRACE block_cnt R_BRACE | eps