From 6bf4b90c90f15f4ab60833bddf5b5756d1a6b1f6 Mon Sep 17 00:00:00 2001
From: Elizabeth Alexander Hunt <me@liz.coffee>
Date: Thu, 2 Jul 2026 11:55:17 -0700
Subject: Init

---
 Homework/cs5300/p4-formatter/grammar/Cminus.g4 | 91 ++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 Homework/cs5300/p4-formatter/grammar/Cminus.g4

(limited to 'Homework/cs5300/p4-formatter/grammar/Cminus.g4')

diff --git a/Homework/cs5300/p4-formatter/grammar/Cminus.g4 b/Homework/cs5300/p4-formatter/grammar/Cminus.g4
new file mode 100644
index 0000000..9538eea
--- /dev/null
+++ b/Homework/cs5300/p4-formatter/grammar/Cminus.g4
@@ -0,0 +1,91 @@
+grammar Cminus;
+
+program : declaration+ ;
+
+declaration : varDeclaration | funDeclaration ;
+
+varDeclaration : typeSpecifier varDeclId (',' varDeclId)* ';' ;
+
+varDeclId : ID | ID '[' NUMCONST ']' ;
+ 
+funDeclaration : ('void' | typeSpecifier) ID '(' param? (',' param)* ')' statement ;
+//funDeclaration : ('void' | typeSpecifier) ID '(' param? (',' param)* ')' compoundStatement ;
+
+typeSpecifier : 'int' | 'bool' | 'char' ;
+
+param : typeSpecifier paramId ;
+
+paramId : ID | ID '[]' ;
+
+statement : expressionStmt | compoundStmt | ifStmt
+          | whileStmt | returnStmt | breakStmt ;
+
+compoundStmt : '{' varDeclaration* statement* '}' ;
+
+expressionStmt : expression ';' | ';' ;
+
+ifStmt : 'if' '(' simpleExpression ')' statement
+       | 'if' '(' simpleExpression ')' statement 'else' statement
+       ;
+
+whileStmt : 'while' '(' simpleExpression ')' statement ;
+
+returnStmt : 'return' ';' | 'return' expression ';' ;
+
+breakStmt : 'break' ';' ;
+
+expression : mutable '=' expression
+           | mutable '+=' expression | mutable '-=' expression
+           | mutable '*=' expression | mutable '/=' expression
+           | mutable '++' | mutable '--' | simpleExpression
+           ;
+
+simpleExpression : orExpression ;
+
+orExpression : (andExpression '||')* andExpression ;
+
+andExpression : (unaryRelExpression '&&')* unaryRelExpression ;
+
+unaryRelExpression : BANG* relExpression ;
+
+relExpression : (sumExpression relop)* sumExpression ;
+
+relop : '<=' | '<' | '>' | '>=' | '==' | '!=' ;
+
+sumExpression : (termExpression sumop)* termExpression ;
+
+sumop : '+' | '-' ;
+
+termExpression : (unaryExpression mulop)* unaryExpression ;
+
+mulop : '*' | '/' | '%' ;
+
+unaryExpression : unaryop* factor ;
+
+unaryop : '-' | '*' | '?' ;
+
+factor : immutable | mutable ;
+
+mutable : ID | ID '[' expression ']' ;
+
+immutable : '(' expression ')' | call | constant ;
+
+call : ID '(' (expression ',')* expression? ')' ;
+
+constant : NUMCONST | CHARCONST | STRINGCONST | 'true' | 'false' ;
+
+ID : LETTER (LETTER | DIGIT)* ;
+NUMCONST : DIGIT+ ;
+STRINGCONST : '"' ('\\"'|~'"')*? '"' ;
+CHARCONST : '"' ('\\"'|~'"') '"' ;
+BANG : '!' ;
+
+WS :  (' ' | '\t' | '\n' | '\r' | '\f')+ -> skip ;
+COMMENT
+  :   ( '//' ~[\r\n]* '\r'? '\n'
+      | '/*' .*? '*/'
+      ) -> skip
+  ;
+
+fragment LETTER : ('a'..'z' | 'A'..'Z');
+fragment DIGIT  : ('0'..'9');
-- 
cgit v1.3