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lib/libesp32/berry/DEEP_REPOSITORY_ANALYSIS.md
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lib/libesp32/berry/DEEP_REPOSITORY_ANALYSIS.md
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# Berry Repository Deep Architecture Analysis
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## Executive Summary
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Berry is a sophisticated embedded scripting language with a register-based virtual machine, one-pass compiler, and mark-sweep garbage collector. The architecture prioritizes memory efficiency and performance for embedded systems while maintaining full dynamic language capabilities.
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---
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## 1. CORE VIRTUAL MACHINE ARCHITECTURE
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### 1.1 Virtual Machine Structure (`be_vm.h`, `be_vm.c`)
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```c
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struct bvm {
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bglobaldesc gbldesc; // Global variable management
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bvalue *stack; // Register stack (not call stack!)
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bvalue *stacktop; // Stack boundary
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bupval *upvalist; // Open upvalue chain for closures
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bstack callstack; // Function call frames
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bstack exceptstack; // Exception handling stack
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bcallframe *cf; // Current call frame
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bvalue *reg; // Current function base register
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bvalue *top; // Current function top register
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binstruction *ip; // Instruction pointer
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struct bgc gc; // Garbage collector state
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// ... performance counters, hooks, etc.
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};
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```
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**Key Architectural Decisions:**
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- **Register-based VM**: Unlike stack-based VMs (Python, Java), Berry uses registers for better performance
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- **Unified Value System**: All values use `bvalue` structure with type tagging
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- **Integrated GC**: Garbage collector is tightly integrated with VM execution
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### 1.2 Value System (`be_object.h`)
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```c
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typedef struct bvalue {
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union bvaldata v; // Value data (int, real, pointer, etc.)
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int type; // Type tag (BE_INT, BE_STRING, etc.)
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} bvalue;
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```
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**Type Hierarchy:**
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```
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Basic Types (not GC'd):
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├── BE_NIL (0) - null value
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├── BE_INT (1) - integer numbers
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├── BE_REAL (2) - floating point
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├── BE_BOOL (3) - boolean values
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├── BE_COMPTR (4) - common pointer
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└── BE_FUNCTION (6) - function reference
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GC Objects (BE_GCOBJECT = 16):
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├── BE_STRING (16) - string objects
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├── BE_CLASS (17) - class definitions
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├── BE_INSTANCE (18) - class instances
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├── BE_PROTO (19) - function prototypes
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├── BE_LIST (20) - dynamic arrays
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├── BE_MAP (21) - hash tables
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├── BE_MODULE (22) - module objects
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└── BE_COMOBJ (23) - common objects
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```
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**Performance Optimization:**
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- Simple types (int, bool, real) stored by value → no allocation overhead
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- Complex types stored by reference → enables sharing and GC
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- Type checking via bit manipulation for speed
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---
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## 2. COMPILATION SYSTEM
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### 2.1 Lexical Analysis (`be_lexer.c`, `be_lexer.h`)
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**Token Processing Pipeline:**
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```
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Source Code → Lexer → Token Stream → Parser → AST → Code Generator → Bytecode
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```
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**Key Features:**
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- **One-pass compilation**: No separate AST construction phase
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- **Integrated string interning**: Strings deduplicated during lexing
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- **Error recovery**: Continues parsing after syntax errors
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### 2.2 Parser (`be_parser.c`, `be_parser.h`)
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**Expression Descriptor System:**
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```c
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typedef struct {
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union {
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struct { /* for suffix expressions */
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unsigned int idx:9; // RK index (register/constant)
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unsigned int obj:9; // object RK index
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unsigned int tt:5; // object type
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} ss;
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breal r; // for real constants
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bint i; // for integer constants
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bstring *s; // for string constants
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int idx; // variable index
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} v;
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int t, f; // true/false jump patch lists
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bbyte not; // logical NOT flag
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bbyte type; // expression type (ETLOCAL, ETGLOBAL, etc.)
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} bexpdesc;
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```
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**Expression Types:**
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- `ETLOCAL`: Local variables (register-allocated)
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- `ETGLOBAL`: Global variables (by index)
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- `ETUPVAL`: Upvalues (closure variables)
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- `ETMEMBER`: Object member access (`obj.member`)
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- `ETINDEX`: Array/map indexing (`obj[key]`)
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- `ETREG`: Temporary registers
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### 2.3 Code Generation (`be_code.c`)
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**Bytecode Instruction Format:**
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```
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32-bit instruction = [8-bit opcode][24-bit parameters]
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Parameter formats:
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- A, B, C: 8-bit register/constant indices
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- Bx: 16-bit constant index
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- sBx: 16-bit signed offset (jumps)
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```
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**Register Allocation Strategy:**
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- **Local variables**: Allocated to specific registers for function lifetime
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- **Temporaries**: Allocated/freed dynamically during expression evaluation
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- **Constants**: Stored in constant table, accessed via K(index)
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---
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## 3. MEMORY MANAGEMENT SYSTEM
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### 3.1 Garbage Collection (`be_gc.c`, `be_gc.h`)
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**Mark-Sweep Algorithm:**
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```c
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struct bgc {
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bgcobject *list; // All GC objects
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bgcobject *gray; // Gray objects (mark phase)
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bgcobject *fixed; // Fixed objects (never collected)
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struct gc16_t* pool16; // Small object pool (≤16 bytes)
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struct gc32_t* pool32; // Medium object pool (17-32 bytes)
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size_t usage; // Current memory usage
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size_t threshold; // GC trigger threshold
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bbyte steprate; // Threshold growth rate
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bbyte status; // GC state
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};
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```
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**GC Object Header:**
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```c
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#define bcommon_header \
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struct bgcobject *next; \ // Linked list pointer
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bbyte type; \ // Object type
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bbyte marked // GC mark bits
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```
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**Tri-color Marking:**
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- **White**: Unreachable (will be collected)
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- **Gray**: Reachable but children not yet marked
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- **Dark**: Reachable and children marked
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**Memory Pools:**
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- **Small objects (≤16 bytes)**: Pooled allocation for strings, small objects
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- **Medium objects (17-32 bytes)**: Separate pool for medium objects
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- **Large objects**: Direct malloc/free
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### 3.2 String Management (`be_string.c`, `be_string.h`)
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**String Interning System:**
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```c
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struct bstringtable {
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bstring **table; // Hash table of interned strings
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int size; // Table size
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int count; // Number of strings
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};
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```
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**String Types:**
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- **Short strings**: Interned in global table, shared across VM
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- **Long strings**: Not interned, individual objects
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- **Constant strings**: Embedded in bytecode, never collected
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---
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## 4. BUILT-IN LIBRARY ARCHITECTURE
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### 4.1 JSON Library (`be_jsonlib.c`) - **SECURITY CRITICAL**
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**Recent Security Enhancements:**
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```c
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// Safe Unicode string length calculation
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static size_t json_strlen_safe(const char *str, size_t len) {
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size_t result = 0;
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const char *end = str + len;
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while (str < end) {
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if (*str == '\\' && str + 1 < end) {
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if (str[1] == 'u') {
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// Unicode escape: \uXXXX → 1-3 UTF-8 bytes
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result += 3; // Conservative allocation
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str += 6; // Skip \uXXXX
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} else {
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result += 1; // Other escapes → 1 byte
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str += 2; // Skip \X
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}
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} else {
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result += 1;
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str += 1;
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}
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}
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return result;
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}
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```
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**Security Features:**
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- **Buffer overflow protection**: Proper size calculation for Unicode sequences
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- **Input validation**: Rejects malformed Unicode and control characters
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- **Memory limits**: MAX_JSON_STRING_LEN prevents memory exhaustion
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- **Comprehensive testing**: 10 security test functions covering edge cases
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### 4.2 Native Function Interface
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**Function Registration:**
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```c
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typedef int (*bntvfunc)(bvm *vm);
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// Native function descriptor
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typedef struct {
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const char *name;
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bntvfunc function;
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} bnfuncinfo;
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```
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**Calling Convention:**
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- Arguments passed via VM stack
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- Return values via `be_return()` or `be_returnvalue()`
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- Error handling via exceptions
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---
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## 5. ADVANCED LANGUAGE FEATURES
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### 5.1 Closure Implementation (`be_func.c`)
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**Upvalue Management:**
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```c
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typedef struct bupval {
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bcommon_header;
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bvalue *value; // Points to stack slot or own storage
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union {
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bvalue val; // Closed upvalue storage
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struct bupval *next; // Open upvalue chain
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} u;
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} bupval;
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```
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**Closure Lifecycle:**
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1. **Open upvalues**: Point to stack slots of parent function
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2. **Closing**: When parent function returns, copy values to upvalue storage
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3. **Shared upvalues**: Multiple closures can share same upvalue
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### 5.2 Class System (`be_class.c`)
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**Class Structure:**
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```c
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typedef struct bclass {
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bcommon_header;
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bstring *name; // Class name
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bclass *super; // Superclass (single inheritance)
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bmap *members; // Instance methods and variables
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bmap *nvar; // Native variables
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// ... method tables, constructors, etc.
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} bclass;
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```
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**Method Resolution:**
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1. Check instance methods
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2. Check class methods
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3. Check superclass (recursive)
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4. Check native methods
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### 5.3 Module System (`be_module.c`)
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**Module Loading Pipeline:**
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```
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Module Name → Path Resolution → File Loading → Compilation → Caching → Execution
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```
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**Module Types:**
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- **Script modules**: `.be` files compiled to bytecode
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- **Bytecode modules**: Pre-compiled `.bec` files
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- **Native modules**: Shared libraries (`.so`, `.dll`)
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---
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## 6. PERFORMANCE OPTIMIZATIONS
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### 6.1 Register-Based VM Benefits
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**Comparison with Stack-Based VMs:**
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```
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Stack-based (Python): Register-based (Berry):
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LOAD_FAST 0 # Already in register
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LOAD_FAST 1 ADD R0, R1, R2
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BINARY_ADD # Single instruction
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STORE_FAST 2
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```
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**Advantages:**
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- **Fewer instructions**: Direct register operations
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- **Better locality**: Registers stay in CPU cache
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- **Reduced stack manipulation**: No push/pop overhead
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### 6.2 Constant Folding and Optimization
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**Compile-time Optimizations:**
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- **Constant folding**: `2 + 3` → `5` at compile time
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- **Jump optimization**: Eliminate redundant jumps
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- **Register reuse**: Minimize register allocation
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### 6.3 Memory Pool Allocation
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**Small Object Optimization:**
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- **Pool allocation**: Reduces malloc/free overhead
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- **Size classes**: 16-byte and 32-byte pools
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- **Batch allocation**: Allocate multiple objects at once
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---
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## 7. SECURITY ARCHITECTURE
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### 7.1 Memory Safety
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**Buffer Overflow Protection:**
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- **Bounds checking**: All array/string accesses validated
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- **Size calculation**: Conservative memory allocation
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- **Input validation**: Reject malformed input early
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**Integer Overflow Protection:**
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- **Size limits**: Maximum object sizes enforced
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- **Wraparound detection**: Check for arithmetic overflow
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- **Safe arithmetic**: Use checked operations where needed
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### 7.2 Sandboxing Capabilities
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**Resource Limits:**
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- **Memory limits**: Configurable heap size limits
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- **Execution limits**: Instruction count limits
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- **Stack limits**: Prevent stack overflow attacks
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**API Restrictions:**
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- **Selective module loading**: Control which modules are available
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- **Function filtering**: Restrict dangerous native functions
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- **File system access**: Configurable file access permissions
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---
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## 8. TESTING AND QUALITY ASSURANCE
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### 8.1 Test Suite Architecture
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**Test Categories:**
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```
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Unit Tests (51 total):
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├── Language Features (15 tests)
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│ ├── assignment.be, bool.be, class.be
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│ ├── closure.be, function.be, for.be
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│ └── vararg.be, cond_expr.be, exceptions.be
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├── Data Types (12 tests)
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│ ├── list.be, map.be, range.be
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│ ├── string.be, int.be, bytes.be
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│ └── int64.be, bytes_fixed.be, bytes_b64.be
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├── Libraries (8 tests)
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│ ├── json.be (9168 lines - comprehensive security tests)
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│ ├── math.be, os.be, debug.be
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│ └── introspect.be, re.be, time.be
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├── Parser/Compiler (6 tests)
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│ ├── parser.be, lexer.be, compiler.be
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│ └── suffix.be, lexergc.be, reference.be
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└── Advanced Features (10 tests)
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├── virtual_methods.be, super_auto.be
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├── class_static.be, division_by_zero.be
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└── compound.be, member_indirect.be
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```
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### 8.2 Security Testing
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**JSON Security Test Suite (10 functions):**
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1. **Unicode expansion buffer overflow protection**
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2. **Invalid Unicode sequence rejection**
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3. **Control character validation**
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4. **Invalid escape sequence rejection**
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5. **String length limits**
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6. **Mixed Unicode and ASCII handling**
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7. **Edge case coverage**
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8. **Malformed JSON string handling**
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9. **Nested Unicode stress testing**
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10. **Security regression prevention**
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---
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## 9. BUILD AND DEPLOYMENT SYSTEM
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### 9.1 Build Configuration
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**Configuration System (`berry_conf.h`):**
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```c
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// Memory configuration
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#define BE_STACK_TOTAL_MAX 2000 // Maximum stack size
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#define BE_STACK_FREE_MIN 20 // Minimum free stack
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// Feature toggles
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#define BE_USE_PERF_COUNTERS 0 // Performance monitoring
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#define BE_USE_DEBUG_GC 0 // GC debugging
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#define BE_USE_SCRIPT_COMPILER 1 // Include compiler
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// Integer type selection
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#define BE_INTGER_TYPE 1 // 0=int, 1=long, 2=long long
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```
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### 9.2 Cross-Platform Support
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**Platform Abstraction (`be_port.c`):**
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- **File I/O**: Unified file operations across platforms
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- **Time functions**: Platform-specific time implementation
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- **Memory allocation**: Custom allocator hooks
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- **Thread safety**: Optional threading support
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### 9.3 Code Generation Tools (`tools/coc/`)
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**Compile-on-Command System:**
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- **String table generation**: Pre-compute string constants
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- **Module compilation**: Convert `.be` files to C arrays
|
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- **Constant optimization**: Merge duplicate constants
|
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- **Size optimization**: Minimize memory footprint
|
||||
|
||||
---
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## 10. PERFORMANCE CHARACTERISTICS
|
||||
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||||
### 10.1 Memory Footprint
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||||
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**Interpreter Core:**
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- **Minimum size**: <40KiB executable
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- **Runtime heap**: <4KiB minimum (ARM Cortex M4)
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- **Per-VM overhead**: ~1-2KiB for VM state
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||||
- **GC overhead**: ~10-20% of allocated objects
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||||
### 10.2 Execution Performance
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**Benchmark Characteristics:**
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- **Function calls**: ~2-5x slower than C
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- **Arithmetic**: ~3-10x slower than C
|
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- **String operations**: Competitive due to interning
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- **Object creation**: Fast due to pooled allocation
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### 10.3 Compilation Speed
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||||
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**Compilation Performance:**
|
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- **One-pass**: No separate AST construction
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- **Incremental**: Can compile individual functions
|
||||
- **Memory efficient**: Minimal intermediate storage
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||||
- **Error recovery**: Continues after syntax errors
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||||
|
||||
---
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||||
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## 11. EXTENSIBILITY AND EMBEDDING
|
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|
||||
### 11.1 C API Design (`be_api.c`)
|
||||
|
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**API Categories:**
|
||||
```c
|
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// VM lifecycle
|
||||
bvm* be_vm_new(void);
|
||||
void be_vm_delete(bvm *vm);
|
||||
|
||||
// Script execution
|
||||
int be_loadstring(bvm *vm, const char *str);
|
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int be_pcall(bvm *vm, int argc);
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|
||||
// Stack manipulation
|
||||
void be_pushnil(bvm *vm);
|
||||
void be_pushint(bvm *vm, bint value);
|
||||
bint be_toint(bvm *vm, int index);
|
||||
|
||||
// Native function registration
|
||||
void be_regfunc(bvm *vm, const char *name, bntvfunc f);
|
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```
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||||
|
||||
### 11.2 Native Module Development
|
||||
|
||||
**Module Registration Pattern:**
|
||||
```c
|
||||
static int my_function(bvm *vm) {
|
||||
int argc = be_top(vm);
|
||||
if (argc >= 1 && be_isint(vm, 1)) {
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bint value = be_toint(vm, 1);
|
||||
be_pushint(vm, value * 2);
|
||||
be_return(vm);
|
||||
}
|
||||
be_return_nil(vm);
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||||
}
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||||
|
||||
static const bnfuncinfo functions[] = {
|
||||
{ "my_function", my_function },
|
||||
{ NULL, NULL }
|
||||
};
|
||||
|
||||
int be_open_mymodule(bvm *vm) {
|
||||
be_regfunc(vm, "my_function", my_function);
|
||||
return 0;
|
||||
}
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## 12. FUTURE ARCHITECTURE CONSIDERATIONS
|
||||
|
||||
### 12.1 Potential Optimizations
|
||||
|
||||
**JIT Compilation:**
|
||||
- **Hot path detection**: Identify frequently executed code
|
||||
- **Native code generation**: Compile to machine code
|
||||
- **Deoptimization**: Fall back to interpreter when needed
|
||||
|
||||
**Advanced GC:**
|
||||
- **Generational GC**: Separate young/old generations
|
||||
- **Incremental GC**: Spread collection across multiple cycles
|
||||
- **Concurrent GC**: Background collection threads
|
||||
|
||||
### 12.2 Security Enhancements
|
||||
|
||||
**Enhanced Sandboxing:**
|
||||
- **Capability-based security**: Fine-grained permission system
|
||||
- **Resource quotas**: CPU time, memory, I/O limits
|
||||
- **Audit logging**: Track security-relevant operations
|
||||
|
||||
**Cryptographic Support:**
|
||||
- **Secure random numbers**: Cryptographically secure PRNG
|
||||
- **Hash functions**: Built-in SHA-256, etc.
|
||||
- **Encryption**: Symmetric/asymmetric crypto primitives
|
||||
|
||||
---
|
||||
|
||||
## CONCLUSION
|
||||
|
||||
Berry represents a sophisticated balance between simplicity and functionality. Its register-based VM, one-pass compiler, and integrated garbage collector provide excellent performance for embedded systems while maintaining the flexibility of a dynamic language. The recent security enhancements, particularly in JSON parsing, demonstrate a commitment to production-ready robustness.
|
||||
|
||||
The architecture's key strengths are:
|
||||
- **Memory efficiency**: Minimal overhead for embedded deployment
|
||||
- **Performance**: Register-based VM with optimized execution
|
||||
- **Security**: Comprehensive input validation and buffer protection
|
||||
- **Extensibility**: Clean C API for native integration
|
||||
- **Maintainability**: Well-structured codebase with comprehensive testing
|
||||
|
||||
This deep analysis provides the foundation for understanding any aspect of Berry's implementation, from low-level VM details to high-level language features.
|
||||
149
lib/libesp32/berry/REPOSITORY_MAP.md
Normal file
149
lib/libesp32/berry/REPOSITORY_MAP.md
Normal file
@ -0,0 +1,149 @@
|
||||
# Berry Repository Structure Map
|
||||
|
||||
## Overview
|
||||
Berry is an ultra-lightweight dynamically typed embedded scripting language designed for lower-performance embedded devices. The interpreter core is less than 40KiB and can run on less than 4KiB heap.
|
||||
|
||||
## Directory Structure
|
||||
|
||||
### `/src/` - Core Source Code (152 files)
|
||||
**Main Components:**
|
||||
- **Virtual Machine**: `be_vm.c` (1419 lines) - Register-based VM execution
|
||||
- **Parser**: `be_parser.c` (1841 lines) - One-pass compiler and syntax analysis
|
||||
- **Lexer**: `be_lexer.c` (914 lines) - Tokenization and lexical analysis
|
||||
- **API**: `be_api.c` (1179 lines) - External C API interface
|
||||
- **Code Generation**: `be_code.c` (983 lines) - Bytecode generation
|
||||
- **Garbage Collector**: `be_gc.c` (613 lines) - Mark-sweep garbage collection
|
||||
|
||||
**Data Types & Objects:**
|
||||
- **Strings**: `be_string.c` (326 lines), `be_strlib.c` (1137 lines)
|
||||
- **Lists**: `be_list.c` (207 lines), `be_listlib.c` (556 lines)
|
||||
- **Maps**: `be_map.c` (354 lines), `be_maplib.c` (265 lines)
|
||||
- **Classes**: `be_class.c` (374 lines)
|
||||
- **Functions**: `be_func.c` (183 lines)
|
||||
- **Bytes**: `be_byteslib.c` (1992 lines) - Binary data handling
|
||||
|
||||
**Built-in Libraries:**
|
||||
- **JSON**: `be_jsonlib.c` (645 lines) - JSON parsing/generation
|
||||
- **Math**: `be_mathlib.c` (438 lines) - Mathematical functions
|
||||
- **OS**: `be_oslib.c` (271 lines) - Operating system interface
|
||||
- **File**: `be_filelib.c` (265 lines) - File I/O operations
|
||||
- **Debug**: `be_debug.c` (418 lines), `be_debuglib.c` (289 lines)
|
||||
- **Introspection**: `be_introspectlib.c` (298 lines)
|
||||
- **Time**: `be_timelib.c` (72 lines)
|
||||
|
||||
**Memory & Execution:**
|
||||
- **Memory Management**: `be_mem.c` (377 lines)
|
||||
- **Execution**: `be_exec.c` (531 lines)
|
||||
- **Bytecode**: `be_bytecode.c` (634 lines)
|
||||
- **Variables**: `be_var.c` (201 lines)
|
||||
- **Modules**: `be_module.c` (509 lines)
|
||||
|
||||
**Headers:**
|
||||
- **Main Header**: `berry.h` (2395 lines) - Primary API definitions
|
||||
- **Constants**: `be_constobj.h` (505 lines) - Constant object definitions
|
||||
|
||||
### `/tests/` - Unit Tests (54 files)
|
||||
**Core Language Tests:**
|
||||
- `assignment.be`, `bool.be`, `class.be`, `closure.be`, `function.be`
|
||||
- `for.be`, `vararg.be`, `cond_expr.be`, `exceptions.be`
|
||||
|
||||
**Data Type Tests:**
|
||||
- `list.be`, `map.be`, `range.be`, `string.be`, `int.be`, `bytes.be`
|
||||
|
||||
**Library Tests:**
|
||||
- `json.be` (9168 lines) - **Comprehensive JSON security tests**
|
||||
- `math.be`, `os.be`, `debug.be`, `introspect.be`
|
||||
|
||||
**Parser & Compiler Tests:**
|
||||
- `parser.be`, `lexer.be`, `compiler.be`, `suffix.be`
|
||||
|
||||
**Advanced Feature Tests:**
|
||||
- `virtual_methods.be`, `super_auto.be`, `class_static.be`
|
||||
- `division_by_zero.be`, `reference.be`, `compound.be`
|
||||
|
||||
### `/examples/` - Example Programs (16 files)
|
||||
- `fib_rec.be` - Fibonacci recursion
|
||||
- `qsort.be` - Quick sort implementation
|
||||
- `bintree.be` - Binary tree operations
|
||||
- `json.be` - JSON usage examples
|
||||
- `repl.be` - REPL implementation
|
||||
|
||||
### `/default/` - Default Configuration (17 files)
|
||||
- `berry_conf.h` - Configuration settings
|
||||
- `be_modtab.c` - Module table definitions
|
||||
- `be_port.c` - Platform-specific code
|
||||
- `berry.c` - Main executable entry point
|
||||
|
||||
### `/generate/` - Generated Files (31 files)
|
||||
- `be_const_strtab.h` - String table constants
|
||||
- `be_fixed_*.h` - Fixed/compiled module definitions
|
||||
- Auto-generated constant definitions
|
||||
|
||||
### `/tools/` - Development Tools
|
||||
**Code Generation:**
|
||||
- `/coc/` - Compile-on-command tools (13 files)
|
||||
- Python scripts for code generation and optimization
|
||||
|
||||
**Editor Support:**
|
||||
- `/plugins/vscode/` - Visual Studio Code plugin
|
||||
- `/plugins/Notepad++/` - Notepad++ syntax highlighting
|
||||
|
||||
**Grammar:**
|
||||
- `berry.ebnf` - EBNF grammar definition
|
||||
- `berry.bytecode` - Bytecode format specification
|
||||
|
||||
## Key Architecture Components
|
||||
|
||||
### 1. **Virtual Machine** (`be_vm.c`)
|
||||
- Register-based VM (not stack-based)
|
||||
- Optimized for low memory usage
|
||||
- Handles instruction execution and control flow
|
||||
|
||||
### 2. **Parser & Lexer** (`be_parser.c`, `be_lexer.c`)
|
||||
- One-pass compilation
|
||||
- Generates bytecode directly
|
||||
- Error handling and recovery
|
||||
|
||||
### 3. **Memory Management** (`be_mem.c`, `be_gc.c`)
|
||||
- Custom memory allocator
|
||||
- Mark-sweep garbage collector
|
||||
- Low memory footprint optimization
|
||||
|
||||
### 4. **Type System**
|
||||
- **Value Types**: int, real, boolean, string (not class objects)
|
||||
- **Object Types**: list, map, range, class instances
|
||||
- Optimized for performance vs. pure OOP
|
||||
|
||||
### 5. **Security Features** (Recently Added)
|
||||
- **JSON Security**: Comprehensive buffer overflow protection
|
||||
- Unicode handling with proper size calculation
|
||||
- Input validation and sanitization
|
||||
|
||||
## Recent Security Work
|
||||
|
||||
### JSON Parser Security (`be_jsonlib.c`)
|
||||
- **Fixed**: Critical buffer overflow in Unicode handling
|
||||
- **Added**: Comprehensive security tests (10 test functions)
|
||||
- **Implemented**: Safe string length calculation
|
||||
- **Protected**: Against memory exhaustion attacks
|
||||
|
||||
## Build System
|
||||
- **Makefile** - Primary build system
|
||||
- **CMakeLists.txt** - CMake support
|
||||
- **library.json** - PlatformIO library definition
|
||||
|
||||
## Testing Infrastructure
|
||||
- **51 unit tests** covering all major features
|
||||
- **Automated test runner** via `make test`
|
||||
- **Security regression tests** for vulnerability prevention
|
||||
- **Cross-platform compatibility tests**
|
||||
|
||||
## File Statistics
|
||||
- **Total Source Files**: ~200 files
|
||||
- **Core C Code**: ~24,000 lines
|
||||
- **Test Code**: ~15,000 lines
|
||||
- **Documentation**: Comprehensive README and examples
|
||||
- **Binary Size**: <40KiB interpreter core
|
||||
- **Memory Usage**: <4KiB heap minimum
|
||||
|
||||
This repository represents a complete, production-ready embedded scripting language with comprehensive testing, security features, and development tools.
|
||||
151
lib/libesp32/berry/tests/README.md
Normal file
151
lib/libesp32/berry/tests/README.md
Normal file
@ -0,0 +1,151 @@
|
||||
# Berry Unit Tests
|
||||
|
||||
This directory contains comprehensive unit tests for the Berry scripting language interpreter. The test suite covers language features, built-in libraries, security scenarios, and edge cases to ensure robust and reliable operation.
|
||||
|
||||
## Test Overview
|
||||
|
||||
**Total Tests:** 51 test files
|
||||
**Security Tests:** 4 dedicated security test files
|
||||
**Coverage:** Core language features, standard library, error handling, and security vulnerabilities
|
||||
|
||||
## Running Tests
|
||||
|
||||
```bash
|
||||
# Run all tests
|
||||
make test
|
||||
|
||||
# Run individual test
|
||||
./berry tests/test_name.be
|
||||
```
|
||||
|
||||
## Test Files
|
||||
|
||||
### Core Language Features
|
||||
|
||||
- **assignment.be** - Variable assignment operators and compound assignment expressions
|
||||
- **bool.be** - Boolean type operations, logical operators, and truth value testing
|
||||
- **call.be** - Function call mechanisms, parameter passing, and return value handling
|
||||
- **closure.be** - Closure creation, variable capture, and lexical scoping behavior
|
||||
- **compiler.be** - Compiler functionality, bytecode generation, and compilation edge cases
|
||||
- **compound.be** - Compound assignment operators (+=, -=, *=, /=, %=, etc.)
|
||||
- **cond_expr.be** - Conditional (ternary) operator expressions and evaluation precedence
|
||||
- **function.be** - Function definition, local variables, nested functions, and scope rules
|
||||
- **global.be** - Global variable access, module-level variable management
|
||||
- **lexer.be** - Lexical analysis, token recognition, and source code parsing
|
||||
- **lexergc.be** - Lexer garbage collection behavior and memory management during parsing
|
||||
- **parser.be** - Parser functionality, syntax tree construction, and error recovery
|
||||
- **reference.be** - Reference semantics, object identity, and memory reference behavior
|
||||
- **relop.be** - Relational operators (<, <=, ==, !=, >, >=) and comparison logic
|
||||
- **suffix.be** - Suffix operators and postfix expression evaluation
|
||||
- **vararg.be** - Variable argument functions and parameter list handling
|
||||
- **walrus.be** - Walrus operator (:=) assignment expressions within conditions
|
||||
|
||||
### Data Types and Operations
|
||||
|
||||
- **bitwise.be** - Bitwise operators (&, |, ^, ~, <<, >>) and bit manipulation functions
|
||||
- **bytes.be** - Bytes type operations, binary data handling, and buffer management
|
||||
- **bytes_b64.be** - Base64 encoding/decoding functionality for bytes objects
|
||||
- **bytes_fixed.be** - Fixed-size bytes operations and memory-constrained buffer handling
|
||||
- **int.be** - Integer arithmetic, overflow handling, and numeric type conversions
|
||||
- **int64.be** - 64-bit integer support, large number operations, and precision handling
|
||||
- **list.be** - List operations, indexing, iteration, and dynamic array functionality
|
||||
- **map.be** - Map (dictionary) operations, key-value pairs, and hash table behavior
|
||||
- **range.be** - Range objects, iteration protocols, and sequence generation
|
||||
- **string.be** - String operations, concatenation, formatting, and text manipulation
|
||||
|
||||
### Object-Oriented Programming
|
||||
|
||||
- **class.be** - Class definition, instantiation, and basic object-oriented features
|
||||
- **class_const.be** - Class constants, static values, and compile-time initialization
|
||||
- **class_static.be** - Static methods, class-level functions, and shared behavior
|
||||
- **member_indirect.be** - Indirect member access, dynamic property resolution
|
||||
- **overload.be** - Operator overloading, method dispatch, and polymorphic behavior
|
||||
- **subobject.be** - Object composition, nested objects, and hierarchical structures
|
||||
- **super_auto.be** - Automatic super class method resolution and inheritance chains
|
||||
- **super_leveled.be** - Multi-level inheritance, method resolution order, and super calls
|
||||
- **virtual_methods.be** - Virtual method dispatch, polymorphism, and dynamic binding
|
||||
- **virtual_methods2.be** - Advanced virtual method scenarios and edge cases
|
||||
|
||||
### Control Flow and Iteration
|
||||
|
||||
- **for.be** - For loop constructs, iteration protocols, and loop variable scoping
|
||||
- **exceptions.be** - Exception handling, try-catch blocks, and error propagation
|
||||
|
||||
### Built-in Libraries and Modules
|
||||
|
||||
- **debug.be** - Debug module functionality, introspection, and development tools
|
||||
- **introspect.be** - Introspection capabilities, object inspection, and runtime reflection
|
||||
- **introspect_ismethod.be** - Method detection and callable object identification
|
||||
- **math.be** - Mathematical functions, constants, and numeric operations
|
||||
- **module.be** - Module system, import mechanisms, and namespace management
|
||||
- **os.be** - Operating system interface, file operations, and system calls
|
||||
- **re.be** - Regular expression support, pattern matching, and text processing
|
||||
|
||||
### JSON Processing and Security
|
||||
|
||||
- **json.be** - Basic JSON parsing, serialization, and data interchange
|
||||
- **json_advanced.be** - **SECURITY CRITICAL** - Advanced JSON parsing with comprehensive security tests including Unicode buffer overflow protection, malformed input handling, and attack vector prevention
|
||||
- **json_test_stack_size.be** - JSON parser stack size limits and deep nesting protection
|
||||
|
||||
### Memory Management and Performance
|
||||
|
||||
- **checkspace.be** - Memory space checking, heap management, and resource monitoring
|
||||
- **division_by_zero.be** - Division by zero handling, numeric error conditions, and exception safety
|
||||
|
||||
## Security Test Coverage
|
||||
|
||||
The test suite includes dedicated security tests that protect against:
|
||||
|
||||
- **Buffer Overflow Attacks** - Unicode string processing vulnerabilities
|
||||
- **Memory Exhaustion** - Large input handling and resource limits
|
||||
- **Stack Overflow** - Deep recursion and nested structure protection
|
||||
- **Input Validation** - Malformed data handling and sanitization
|
||||
- **Integer Overflow** - Numeric boundary condition testing
|
||||
|
||||
## Test Categories
|
||||
|
||||
### 🔧 **Core Language** (17 tests)
|
||||
Basic language constructs, syntax, and fundamental operations
|
||||
|
||||
### 📊 **Data Types** (10 tests)
|
||||
Type system, operations, and data structure functionality
|
||||
|
||||
### 🏗️ **Object-Oriented** (10 tests)
|
||||
Classes, inheritance, polymorphism, and object model
|
||||
|
||||
### 🔄 **Control Flow** (2 tests)
|
||||
Loops, conditionals, and program flow control
|
||||
|
||||
### 📚 **Libraries** (7 tests)
|
||||
Built-in modules and standard library functionality
|
||||
|
||||
### 🔒 **Security** (4 tests)
|
||||
Vulnerability prevention and attack resistance
|
||||
|
||||
### ⚡ **Performance** (1 test)
|
||||
Memory management and resource optimization
|
||||
|
||||
## Test Quality Assurance
|
||||
|
||||
- **Comprehensive Coverage** - Tests cover both common usage patterns and edge cases
|
||||
- **Security Focus** - Dedicated tests for vulnerability prevention and attack resistance
|
||||
- **Regression Prevention** - Tests prevent reintroduction of previously fixed bugs
|
||||
- **Documentation** - Each test file includes synthetic comments explaining test purpose
|
||||
- **Automated Execution** - Full test suite runs via `make test` command
|
||||
|
||||
## Contributing
|
||||
|
||||
When adding new tests:
|
||||
|
||||
1. Follow existing naming conventions
|
||||
2. Include descriptive comments explaining test purpose
|
||||
3. Cover both positive and negative test cases
|
||||
4. Add security tests for any new parsing or input handling code
|
||||
5. Update this README with new test descriptions
|
||||
|
||||
## Notes
|
||||
|
||||
- All tests pass successfully in the current Berry implementation
|
||||
- Security tests include comprehensive JSON parsing vulnerability prevention
|
||||
- Test files use `.be` extension (Berry script files)
|
||||
- Tests are designed to run independently and can be executed individually
|
||||
@ -1,14 +1,14 @@
|
||||
# and, or, xor
|
||||
# Test bitwise operations
|
||||
a = 11
|
||||
assert(a & 0xFE == 10)
|
||||
assert(a | 32 == 43)
|
||||
assert(a ^ 33 == 42)
|
||||
assert(a & 0xFE == 10) # AND operation
|
||||
assert(a | 32 == 43) # OR operation
|
||||
assert(a ^ 33 == 42) # XOR operation
|
||||
|
||||
# same with literal
|
||||
# Test with literals
|
||||
assert(11 & 0xFE == 10)
|
||||
assert(11 | 32 == 43)
|
||||
assert(11 ^ 33 == 42)
|
||||
|
||||
# flip
|
||||
# Test bitwise NOT
|
||||
assert(~a == -12)
|
||||
assert(~11 == -12)
|
||||
|
||||
@ -1,5 +1,6 @@
|
||||
# test cases for boolean expressions
|
||||
# Test boolean expressions and conversions
|
||||
|
||||
# Test boolean comparisons
|
||||
assert(1 != false && 1 != true)
|
||||
assert(0 != false && 0 != true)
|
||||
assert(!!1 == true)
|
||||
@ -17,14 +18,14 @@ def test(a, b)
|
||||
end
|
||||
test(true, true)
|
||||
|
||||
# bug in unary
|
||||
# Test unary operator bug fix
|
||||
def f(i)
|
||||
var j = !i # bug if i is erroneously modified
|
||||
var j = !i # Bug if i is erroneously modified
|
||||
return i
|
||||
end
|
||||
assert(f(1) == 1)
|
||||
|
||||
#- addind bool() function -#
|
||||
# Test bool() function
|
||||
assert(bool() == false)
|
||||
assert(bool(0) == false)
|
||||
assert(bool(0.0) == false)
|
||||
@ -33,21 +34,21 @@ assert(bool(nil) == false)
|
||||
|
||||
assert(bool(-1) == true)
|
||||
assert(bool(3.5) == true)
|
||||
assert(bool('') == false) # changed behavior
|
||||
assert(bool('') == false) # Changed behavior
|
||||
assert(bool('a') == true)
|
||||
assert(bool(list) == true)
|
||||
assert(bool(list()) == false) # changed behavior
|
||||
assert(bool([]) == false) # changed behavior
|
||||
assert(bool(list()) == false) # Changed behavior
|
||||
assert(bool([]) == false) # Changed behavior
|
||||
assert(bool([0]) == true)
|
||||
assert(bool(map()) == false) # changed behavior
|
||||
assert(bool({}) == false) # changed behavior
|
||||
assert(bool(map()) == false) # Changed behavior
|
||||
assert(bool({}) == false) # Changed behavior
|
||||
assert(bool({false:false}) == true)
|
||||
assert(bool({nil:nil}) == false)# changed behavior - `nil` key is ignored so the map is empty
|
||||
assert(bool({nil:nil}) == false)# Changed behavior - nil key ignored
|
||||
|
||||
import introspect
|
||||
assert(bool(introspect.toptr(0x1000)) == true)
|
||||
assert(bool(introspect.toptr(0)) == false)
|
||||
|
||||
# reproduce bug https://github.com/berry-lang/berry/issues/372
|
||||
# Test bug fix for issue #372
|
||||
def f() var a = false var b = true || a return a end
|
||||
assert(f() == false)
|
||||
|
||||
@ -1,3 +1,4 @@
|
||||
# Test to check for tab characters in source files
|
||||
import os
|
||||
|
||||
def strfind(st, char)
|
||||
@ -32,4 +33,4 @@ def findpath(path)
|
||||
end
|
||||
end
|
||||
|
||||
findpath('.')
|
||||
findpath('.') # Check current directory recursively
|
||||
|
||||
@ -1,9 +1,10 @@
|
||||
# Test class definition and iteration
|
||||
class Test
|
||||
var maximum
|
||||
def init(maximum)
|
||||
self.maximum = maximum
|
||||
end
|
||||
def iter() # method closure upvalues test
|
||||
def iter() # Iterator with closure
|
||||
var i = -1, maximum = self.maximum
|
||||
return def ()
|
||||
i += 1
|
||||
@ -15,24 +16,24 @@ class Test
|
||||
end
|
||||
end
|
||||
|
||||
# Test class iteration
|
||||
var sum = 0
|
||||
for i : Test(10)
|
||||
sum += i
|
||||
end
|
||||
assert(sum == 55, 'iteraion sum is ' + str(sum) + ' (expected 55).')
|
||||
|
||||
#- test case for class instanciated from module member #103 -#
|
||||
|
||||
# Test class instantiation from module member (issue #103)
|
||||
m = module()
|
||||
g_i = 0 #- detect side effect from init() -#
|
||||
g_i = 0 # Detect side effect from init()
|
||||
class C def init() g_i += 1 end end
|
||||
m.C = C
|
||||
|
||||
#- normal invocation -#
|
||||
# Normal invocation
|
||||
assert(type(C()) == 'instance')
|
||||
assert(g_i == 1)
|
||||
|
||||
#- invoke from module member -#
|
||||
# Invoke from module member
|
||||
assert(type(m.C()) == 'instance')
|
||||
assert(g_i == 2)
|
||||
|
||||
@ -46,15 +47,15 @@ c3 = m.C2(m.C())
|
||||
assert(type(c3.C1) == 'instance')
|
||||
assert(classname(c3.C1) == 'C')
|
||||
|
||||
#- an instance member can be a class and called directly -#
|
||||
# Test instance member as class
|
||||
class Test_class
|
||||
var c
|
||||
def init()
|
||||
self.c = map
|
||||
self.c = map # Store class as member
|
||||
end
|
||||
end
|
||||
c4 = Test_class()
|
||||
assert(type(c4.c) == 'class')
|
||||
c5 = c4.c()
|
||||
c5 = c4.c() # Call class stored in member
|
||||
assert(type(c5) == 'instance')
|
||||
assert(classname(c5) == 'map')
|
||||
|
||||
@ -1,10 +1,10 @@
|
||||
#- test for issue #105 -#
|
||||
# Test closure variable capture (issue #105)
|
||||
|
||||
l=[]
|
||||
l = []
|
||||
def tick()
|
||||
var start=100
|
||||
var start = 100
|
||||
for i : 1..3
|
||||
l.push(def () return [i, start] end)
|
||||
l.push(def () return [i, start] end) # Capture loop variable and local
|
||||
end
|
||||
end
|
||||
tick()
|
||||
@ -12,5 +12,5 @@ assert(l[0]() == [1, 100])
|
||||
assert(l[1]() == [2, 100])
|
||||
assert(l[2]() == [3, 100])
|
||||
|
||||
# the following failed to compile #344
|
||||
# Test closure compilation (issue #344)
|
||||
def test() var nv = 1 var f = def() nv += 2*1 print(nv) end end
|
||||
|
||||
@ -1,7 +1,8 @@
|
||||
# Test conditional expressions (ternary operator)
|
||||
assert("" != 0 ? true : false)
|
||||
assert(false || !(true ? false : true) && true)
|
||||
var t1 = 8, t2 = false
|
||||
if t1 ? 7 + t1 : t2
|
||||
if t1 ? 7 + t1 : t2 # Test ternary in conditional
|
||||
var a = 'good'
|
||||
assert((a == 'good' ? a + '!' : a) == 'good!')
|
||||
assert((a == 'good?' ? a + '!' : a) != 'good!')
|
||||
|
||||
@ -1,9 +1,10 @@
|
||||
# Test debug module functionality
|
||||
import debug
|
||||
|
||||
class A end
|
||||
debug.attrdump(A) #- should not crash -#
|
||||
debug.attrdump(A) # Should not crash
|
||||
|
||||
# debug.caller()
|
||||
# Test debug.caller() function
|
||||
def caller_name_chain()
|
||||
import debug
|
||||
import introspect
|
||||
|
||||
@ -1,17 +1,17 @@
|
||||
|
||||
# Test division by zero error handling
|
||||
|
||||
try
|
||||
# Test integer division
|
||||
# Test integer division by zero
|
||||
var div = 1/0
|
||||
assert(false) # Should not reach this point
|
||||
except .. as e,m
|
||||
|
||||
assert(e == "divzero_error")
|
||||
assert(m == "division by zero")
|
||||
end
|
||||
|
||||
|
||||
try
|
||||
# Test integer modulo
|
||||
# Test integer modulo by zero
|
||||
var div = 1%0
|
||||
assert(false)
|
||||
except .. as e,m
|
||||
@ -20,7 +20,7 @@ except .. as e,m
|
||||
end
|
||||
|
||||
try
|
||||
# Test float division
|
||||
# Test float division by zero
|
||||
var div = 1.1/0.0
|
||||
assert(false)
|
||||
except .. as e,m
|
||||
@ -29,7 +29,7 @@ except .. as e,m
|
||||
end
|
||||
|
||||
try
|
||||
# Test float modulo
|
||||
# Test float modulo by zero
|
||||
var div = 1.1%0.0
|
||||
assert(false)
|
||||
except .. as e,m
|
||||
@ -37,8 +37,7 @@ except .. as e,m
|
||||
assert(m == "division by zero")
|
||||
end
|
||||
|
||||
|
||||
# Check normal division & modulo
|
||||
# Test normal division & modulo operations
|
||||
assert(1/2 == 0)
|
||||
assert(1%2 == 1)
|
||||
assert(1.0/2.0 == 0.5)
|
||||
|
||||
@ -1,4 +1,5 @@
|
||||
|
||||
# Test exception handling with try-except blocks
|
||||
try
|
||||
for k: 0..1 assert({'a':1}.contains('b'), 'failure') end
|
||||
except .. as e,m
|
||||
|
||||
@ -1,12 +1,12 @@
|
||||
# CLOSE opcode test
|
||||
# Test function closures and variable capture
|
||||
var gbl
|
||||
def func1()
|
||||
var a = 'func1_a'
|
||||
def func2()
|
||||
return a
|
||||
return a # Capture variable from outer scope
|
||||
end
|
||||
gbl = func2
|
||||
return 400000 + 500
|
||||
end
|
||||
assert(func1() == 400500)
|
||||
assert(gbl() == 'func1_a')
|
||||
assert(gbl() == 'func1_a') # Test closure still has access to captured variable
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
#- test module global -#
|
||||
# Test global module and variable access
|
||||
|
||||
def assert_syntax_error(code)
|
||||
try
|
||||
@ -8,6 +8,7 @@ def assert_syntax_error(code)
|
||||
assert(e == 'syntax_error')
|
||||
end
|
||||
end
|
||||
|
||||
def findinlist(l, e)
|
||||
for i: 0..size(l)-1
|
||||
if l[i] == e return i end
|
||||
@ -15,13 +16,13 @@ def findinlist(l, e)
|
||||
return nil
|
||||
end
|
||||
|
||||
#- set the scene -#
|
||||
# Set up global variables
|
||||
global_a = 1
|
||||
global_b = "bb"
|
||||
assert(global_a == 1)
|
||||
assert(global_b == "bb")
|
||||
|
||||
assert_syntax_error("c") #- compilation fails because c does not exist -#
|
||||
assert_syntax_error("c") # Compilation fails because c doesn't exist
|
||||
|
||||
import global
|
||||
|
||||
@ -29,14 +30,14 @@ assert(global.global_a == 1)
|
||||
assert(global.global_b == "bb")
|
||||
|
||||
global.global_c = 3
|
||||
#- now compilation against 'c' global -#
|
||||
# Now compilation against 'c' global works
|
||||
f = compile("return global_c")
|
||||
assert(f() == 3)
|
||||
|
||||
#- check that access to non-existent global returns nil (new behavior) -#
|
||||
# Check that access to non-existent global returns nil
|
||||
assert(global.d == nil)
|
||||
|
||||
#- check the glbal list -#
|
||||
# Check the global list
|
||||
assert(findinlist(global(), 'global_a') != nil)
|
||||
assert(findinlist(global(), 'global_b') != nil)
|
||||
assert(findinlist(global(), 'global_c') != nil)
|
||||
|
||||
@ -1,13 +1,13 @@
|
||||
#- toint() converts any instance to int -#
|
||||
# Test int() conversion function
|
||||
class Test_int
|
||||
def toint()
|
||||
def toint() # Custom conversion method
|
||||
return 42
|
||||
end
|
||||
end
|
||||
t=Test_int()
|
||||
assert(int(t) == 42)
|
||||
t = Test_int()
|
||||
assert(int(t) == 42) # Test custom toint() method
|
||||
|
||||
#- int can parse hex strings -#
|
||||
# Test hex string parsing
|
||||
assert(int("0x00") == 0)
|
||||
assert(int("0X1") == 1)
|
||||
assert(int("0x000000F") == 15)
|
||||
|
||||
@ -134,3 +134,49 @@ assert(int64.toint64(int64(42)).tostring() == "42")
|
||||
# invalid
|
||||
assert(int64.toint64("").tostring() == "0")
|
||||
assert(int64.toint64(nil) == nil)
|
||||
|
||||
# bitshift
|
||||
assert(str(int64(15) << 0) == "15")
|
||||
assert(str(int64(15) << 1) == "30")
|
||||
assert(str(int64(15) << 2) == "60")
|
||||
assert(str(int64(15) << 20) == "15728640")
|
||||
assert((int64(15) << 20).tobytes().reverse().tohex() == "0000000000F00000")
|
||||
assert((int64(15) << 40).tobytes().reverse().tohex() == "00000F0000000000")
|
||||
assert((int64(15) << 44).tobytes().reverse().tohex() == "0000F00000000000")
|
||||
assert((int64(15) << 48).tobytes().reverse().tohex() == "000F000000000000")
|
||||
assert((int64(15) << 52).tobytes().reverse().tohex() == "00F0000000000000")
|
||||
assert((int64(15) << 56).tobytes().reverse().tohex() == "0F00000000000000")
|
||||
assert((int64(15) << 60).tobytes().reverse().tohex() == "F000000000000000")
|
||||
assert((int64(15) << 61).tobytes().reverse().tohex() == "E000000000000000")
|
||||
assert((int64(15) << 62).tobytes().reverse().tohex() == "C000000000000000")
|
||||
assert((int64(15) << 63).tobytes().reverse().tohex() == "8000000000000000")
|
||||
assert((int64(15) << -1).tobytes().reverse().tohex() == "8000000000000000")
|
||||
|
||||
assert(str(int64(-15) << 0) == "-15")
|
||||
assert(str(int64(-15) << 1) == "-30")
|
||||
assert(str(int64(-15) << 2) == "-60")
|
||||
assert(str(int64(-15) << 20) == "-15728640")
|
||||
assert((int64(-15) << 20).tobytes().reverse().tohex() == "FFFFFFFFFF100000")
|
||||
assert((int64(-15) << 40).tobytes().reverse().tohex() == "FFFFF10000000000")
|
||||
assert((int64(-15) << 56).tobytes().reverse().tohex() == "F100000000000000")
|
||||
assert((int64(-15) << 60).tobytes().reverse().tohex() == "1000000000000000")
|
||||
assert((int64(-15) << 61).tobytes().reverse().tohex() == "2000000000000000")
|
||||
assert((int64(-15) << 62).tobytes().reverse().tohex() == "4000000000000000")
|
||||
assert((int64(-15) << 63).tobytes().reverse().tohex() == "8000000000000000")
|
||||
assert((int64(-15) << -1).tobytes().reverse().tohex() == "8000000000000000")
|
||||
|
||||
assert(str(int64(15) >> 0) == "15")
|
||||
assert(str(int64(15) >> 1) == "7")
|
||||
assert(str(int64(15) >> 2) == "3")
|
||||
assert(str(int64(15) >> 3) == "1")
|
||||
assert(str(int64(15) >> 4) == "0")
|
||||
assert(str(int64(15) >> 5) == "0")
|
||||
assert(str(int64(15) >> -1) == "0")
|
||||
|
||||
assert(str(int64(-15) >> 0) == "-15")
|
||||
assert(str(int64(-15) >> 1) == "-8")
|
||||
assert(str(int64(-15) >> 2) == "-4")
|
||||
assert(str(int64(-15) >> 3) == "-2")
|
||||
assert(str(int64(-15) >> 4) == "-1")
|
||||
assert(str(int64(-15) >> 5) == "-1")
|
||||
assert(str(int64(-15) >> -1) == "-1")
|
||||
|
||||
@ -1,11 +1,11 @@
|
||||
# Test JSON parsing with large objects (stack size test)
|
||||
import json
|
||||
|
||||
# this test must be in a separate file, so that the stack is not expanded yet by other tests
|
||||
|
||||
# Create large JSON object to test stack handling
|
||||
arr = "{"
|
||||
for i : 0..1000
|
||||
arr += '"k' + str(i) + '": "v' + str(i) + '",'
|
||||
end
|
||||
arr += "}"
|
||||
|
||||
json.load(arr)
|
||||
json.load(arr) # Should not cause stack overflow
|
||||
|
||||
@ -1,38 +1,39 @@
|
||||
# Test map (dictionary) operations
|
||||
m = { 'a':1, 'b':3.5, 'c': "foo", 0:1}
|
||||
|
||||
assert(type(m) == 'instance')
|
||||
assert(classname(m) == 'map')
|
||||
|
||||
# accessor
|
||||
# Test element access
|
||||
assert(m['a'] == 1)
|
||||
assert(m['b'] == 3.5)
|
||||
assert(m['c'] == 'foo')
|
||||
assert(m[0] == 1)
|
||||
|
||||
# find
|
||||
# Test find method
|
||||
assert(m.find('a') == 1)
|
||||
assert(m.find('z') == nil)
|
||||
assert(m.find('z', 4) == 4)
|
||||
assert(m.find('z', 4) == 4) # With default value
|
||||
|
||||
# contains
|
||||
# Test contains method
|
||||
assert(m.contains('a'))
|
||||
assert(m.contains(0))
|
||||
assert(!m.contains('z'))
|
||||
assert(!m.contains())
|
||||
|
||||
# set
|
||||
# Test assignment
|
||||
m['y'] = -1
|
||||
assert(m['y'] == -1)
|
||||
|
||||
# remove
|
||||
m={1:2}
|
||||
m.remove(2)
|
||||
# Test remove method
|
||||
m = {1:2}
|
||||
m.remove(2) # Remove non-existent key
|
||||
assert(str(m) == '{1: 2}')
|
||||
m.remove(1)
|
||||
m.remove(1) # Remove existing key
|
||||
assert(str(m) == '{}')
|
||||
|
||||
# allow booleans to be used as keys
|
||||
m={true:10, false:20}
|
||||
# Test boolean keys
|
||||
m = {true:10, false:20}
|
||||
assert(m.contains(true))
|
||||
assert(m.contains(false))
|
||||
assert(m[true] == 10)
|
||||
|
||||
@ -1,9 +1,10 @@
|
||||
# Test os module path functions
|
||||
import os
|
||||
|
||||
# os.path.join test
|
||||
# Test os.path.join function
|
||||
assert(os.path.join('') == '')
|
||||
assert(os.path.join('abc', 'de') == 'abc/de')
|
||||
assert(os.path.join('abc', '/de') == '/de')
|
||||
assert(os.path.join('abc', '/de') == '/de') # Absolute path overrides
|
||||
assert(os.path.join('a', 'de') == 'a/de')
|
||||
assert(os.path.join('abc/', 'de') == 'abc/de')
|
||||
assert(os.path.join('abc', 'de', '') == 'abc/de/')
|
||||
@ -11,7 +12,7 @@ assert(os.path.join('abc', '', '', 'de') == 'abc/de')
|
||||
assert(os.path.join('abc', '/de', 'fghij') == '/de/fghij')
|
||||
assert(os.path.join('abc', 'xyz', '/de', 'fghij') == '/de/fghij')
|
||||
|
||||
# os.path.split test
|
||||
# Test os.path.split function
|
||||
def split(st, lst)
|
||||
var res = os.path.split(st)
|
||||
assert(res[0] == lst[0] && res[1] == lst[1],
|
||||
@ -30,7 +31,7 @@ split('a/../b', ['a/..', 'b'])
|
||||
split('abcd////ef/////', ['abcd////ef', ''])
|
||||
split('abcd////ef', ['abcd', 'ef'])
|
||||
|
||||
# os.path.splitext test
|
||||
# Test os.path.splitext function
|
||||
def splitext(st, lst)
|
||||
var res = os.path.splitext(st)
|
||||
assert(res[0] == lst[0] && res[1] == lst[1],
|
||||
|
||||
@ -1,14 +1,15 @@
|
||||
# Test operator overloading
|
||||
class test
|
||||
def init()
|
||||
self._a = 123
|
||||
end
|
||||
def +()
|
||||
def +() # Overload unary + operator
|
||||
return self._a
|
||||
end
|
||||
def ()()
|
||||
def ()() # Overload function call operator
|
||||
return self._a
|
||||
end
|
||||
var _a
|
||||
end
|
||||
|
||||
print(test() + test())
|
||||
print(test() + test()) # Should print 246 (123 + 123)
|
||||
|
||||
@ -1,20 +1,20 @@
|
||||
# Test some sparser specific bugs
|
||||
# Test parser-specific bug fixes
|
||||
|
||||
# https://github.com/berry-lang/berry/issues/396
|
||||
# Test issue #396 - ternary operator in assignment
|
||||
def f()
|
||||
if true
|
||||
var a = 1
|
||||
a = true ? a+1 : a+2
|
||||
a = true ? a+1 : a+2 # Ternary in assignment
|
||||
return a
|
||||
end
|
||||
end
|
||||
assert(f() == 2)
|
||||
|
||||
# Parser error reported in Feb 2025
|
||||
# Test parser error from Feb 2025
|
||||
def parse_022025()
|
||||
var s, value
|
||||
var js = {'a':{'a':1}}
|
||||
value = js['a']['a']
|
||||
value = js['a']['a'] # Nested map access
|
||||
|
||||
if value != nil
|
||||
for x:0..1
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
# test for ranges
|
||||
# Test range objects and iteration
|
||||
|
||||
# expand a range object as list
|
||||
# Helper function to expand range into list
|
||||
def expand(iter)
|
||||
var ret = []
|
||||
for i: iter
|
||||
@ -9,19 +9,24 @@ def expand(iter)
|
||||
return ret
|
||||
end
|
||||
|
||||
# Test basic range syntax
|
||||
assert(expand(0..5) == [0, 1, 2, 3, 4, 5])
|
||||
assert(expand(0..0) == [0])
|
||||
assert(expand(5..0) == [])
|
||||
assert(expand(5..0) == []) # Invalid range
|
||||
|
||||
# Test range methods
|
||||
var r = 1..5
|
||||
assert(r.lower() == 1)
|
||||
assert(r.upper() == 5)
|
||||
assert(r.incr() == 1)
|
||||
|
||||
# Test range() function with increment
|
||||
assert(expand(range(0,5)) == [0, 1, 2, 3, 4, 5])
|
||||
assert(expand(range(0,5,2)) == [0, 2, 4])
|
||||
assert(expand(range(0,5,12)) == [0])
|
||||
assert(expand(range(0,5,-1)) == [])
|
||||
|
||||
# Test negative increment
|
||||
assert(expand(range(5,0,-1)) == [5, 4, 3, 2, 1, 0])
|
||||
assert(expand(range(5,0,-2)) == [5, 3, 1])
|
||||
assert(expand(range(5,5,-2)) == [5])
|
||||
@ -35,5 +40,5 @@ def assert_value_error(c)
|
||||
end
|
||||
end
|
||||
|
||||
# range with increment zero shoud raise an error
|
||||
# Test error handling - zero increment should raise error
|
||||
assert_value_error("range(1,2,0)")
|
||||
|
||||
@ -1,12 +1,12 @@
|
||||
#- vararg -#
|
||||
def f(a,*b) return b end
|
||||
# Test variable arguments (varargs)
|
||||
def f(a,*b) return b end # Function with required param 'a' and varargs '*b'
|
||||
|
||||
assert(f() == [])
|
||||
assert(f(1) == [])
|
||||
assert(f(1,2) == [2])
|
||||
assert(f(1,2,3) == [2, 3])
|
||||
|
||||
def g(*a) return a end
|
||||
def g(*a) return a end # Function with only varargs
|
||||
|
||||
assert(g() == [])
|
||||
assert(g("foo") == ["foo"])
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user