def p_else_expression(p: yacc.YaccProduction) -> yacc.YaccProduction:
"""
else_expression : PREPROCESSING_KEYWORD_ELSE
"""
symtable.IF_STACK[-1] = (symtable.IF_STACK[-1][0],
not symtable.IF_STACK[-1][1])
p[0] = ast.StringLiteralNode([f"// else expression "])
def p_ifndef_expression(p: yacc.YaccProduction) -> yacc.YaccProduction:
"""
ifndef_expression : PREPROCESSING_KEYWORD_IFNDEF WHITESPACE IDENTIFIER
"""
symtable.IF_STACK.append((p[3], p[3] not in symtable.TABLE))
p[0] = ast.StringLiteralNode([f"// ifndef expression {p[3]}"])
def p_if_expression(p: yacc.YaccProduction) -> yacc.YaccProduction:
"""
if_expression : PREPROCESSING_KEYWORD_IF WHITESPACE valid_expr
"""
symtable.IF_COUNT += 1
symtable.IF_STACK.append((str(symtable.IF_COUNT), p[3]))
p[0] = ast.StringLiteralNode([f"// if expression result: { int(p[3]) }"])
def p_statement_to_char(p: yacc.YaccProduction) -> yacc.YaccProduction:
"""
safe_code_expression : CHAR_LITERAL
"""
p[0] = ast.StringLiteralNode([p[1]])
def p_expression_to_string_lit(p: yacc.YaccProduction) -> yacc.YaccProduction:
"""
safe_code_expression : STRING_LITERAL
"""
p[0] = ast.StringLiteralNode([p[1]])
def p_endif_expression(p: yacc.YaccProduction) -> yacc.YaccProduction:
"""
endif_expression : PREPROCESSING_KEYWORD_ENDIF
"""
symtable.IF_STACK.pop()
p[0] = ast.StringLiteralNode([f"// endif expression "])