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diff --git a/chapter01/docs/01-grammar.md b/chapter01/docs/01-grammar.md new file mode 100644 index 00000000..92ed7357 --- /dev/null +++ b/chapter01/docs/01-grammar.md @@ -0,0 +1,39 @@ +# Grammar for Chapter 1 + +```antlrv4 +grammar SimpleLanguage; + +program + : declaration* statement+ EOF + ; + +declaration + : type IDENTIFIER ';' + ; + +type + : 'int' + ; + +statement + : 'if' '(' expression ')' statement + | 'if' '(' expression ')' statement 'else' statement + | 'while' '(' expression ')' statement + | IDENTIFIER '=' expression ';' + | '{' declaration* statement+ '}' + | 'break' ';' + ; + +expression + : primaryExpression # PrimaryExpression_ + | expression ('*' | '/' ) expression # ArithmeticOrLogicalExpression + | expression ('+' | '-') expression # ArithmeticOrLogicalExpression + ; + +primaryExpression + : + | INTEGER_LITERAL + | IDENTIFIER + | '(' expression ')' + ; +```
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