Improve encode/decode error messages

src-input/duk_api_bytecode.c

@@ -747,7 +747,7 @@ DUK_EXTERNAL void duk_load_function(duk_hthread *thr) {
 	return;
 
  format_error:
-	DUK_ERROR_TYPE(thr, DUK_STR_DECODE_FAILED);
+	DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BYTECODE);
 }
 
 #else  /* DUK_USE_BYTECODE_DUMP_SUPPORT */

src-input/duk_api_codec.c

@@ -410,7 +410,7 @@ DUK_EXTERNAL const char *duk_base64_encode(duk_hthread *thr, duk_idx_t idx) {
 	return ret;
 
  type_error:
-	DUK_ERROR_TYPE(thr, DUK_STR_ENCODE_FAILED);
+	DUK_ERROR_TYPE(thr, DUK_STR_BASE64_ENCODE_FAILED);
 	return NULL;  /* never here */
 }
 
@@ -454,7 +454,7 @@ DUK_EXTERNAL void duk_base64_decode(duk_hthread *thr, duk_idx_t idx) {
 	return;
 
  type_error:
-	DUK_ERROR_TYPE(thr, DUK_STR_DECODE_FAILED);
+	DUK_ERROR_TYPE(thr, DUK_STR_BASE64_DECODE_FAILED);
 }
 
 DUK_EXTERNAL const char *duk_hex_encode(duk_hthread *thr, duk_idx_t idx) {
@@ -593,7 +593,7 @@ DUK_EXTERNAL void duk_hex_decode(duk_hthread *thr, duk_idx_t idx) {
 	return;
 
  type_error:
-	DUK_ERROR_TYPE(thr, DUK_STR_DECODE_FAILED);
+	DUK_ERROR_TYPE(thr, DUK_STR_HEX_DECODE_FAILED);
 }
 
 #if defined(DUK_USE_JSON_SUPPORT)

src-input/duk_bi_encoding.c

@@ -330,7 +330,7 @@ DUK_LOCAL duk_ret_t duk__decode_helper(duk_hthread *thr, duk__decode_context *de
 	return 1;
 
  fail_type:
-	DUK_ERROR_TYPE(thr, DUK_STR_DECODE_FAILED);
+	DUK_ERROR_TYPE(thr, DUK_STR_UTF8_DECODE_FAILED);
 	DUK_UNREACHABLE();
 }
 

src-input/duk_lexer.c

@@ -312,7 +312,7 @@ DUK_LOCAL void duk__fill_lexer_buffer(duk_lexer_ctx *lex_ctx, duk_small_uint_t s
 	lex_ctx->input_offset = (duk_size_t) (p - lex_ctx->input);
 	lex_ctx->input_line = input_line;
 
-	DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_DECODE_FAILED);
+	DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_SOURCE_DECODE_FAILED);
 }
 
 DUK_LOCAL void duk__advance_bytes(duk_lexer_ctx *lex_ctx, duk_small_uint_t count_bytes) {
@@ -472,7 +472,7 @@ DUK_LOCAL duk_codepoint_t duk__read_char(duk_lexer_ctx *lex_ctx) {
 
  error_clipped:   /* clipped codepoint */
  error_encoding:  /* invalid codepoint encoding or codepoint */
-	DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_DECODE_FAILED);
+	DUK_ERROR_SYNTAX(lex_ctx->thr, DUK_STR_SOURCE_DECODE_FAILED);
 	return 0;
 }
 

src-input/duk_strings.h

@@ -62,8 +62,12 @@
 #define DUK_STR_BUFFER_TOO_LONG                  "buffer too long"
 #define DUK_STR_ALLOC_FAILED                     "alloc failed"
 #define DUK_STR_WRONG_BUFFER_TYPE                "wrong buffer type"
-#define DUK_STR_ENCODE_FAILED                    "encode failed"
-#define DUK_STR_DECODE_FAILED                    "decode failed"
+#define DUK_STR_BASE64_ENCODE_FAILED             "base64 encode failed"
+#define DUK_STR_SOURCE_DECODE_FAILED             "source decode failed"
+#define DUK_STR_UTF8_DECODE_FAILED               "utf-8 decode failed"
+#define DUK_STR_BASE64_DECODE_FAILED             "base64 decode failed"
+#define DUK_STR_HEX_DECODE_FAILED                "hex decode failed"
+#define DUK_STR_INVALID_BYTECODE                 "invalid bytecode"
 #define DUK_STR_NO_SOURCECODE                    "no sourcecode"
 #define DUK_STR_RESULT_TOO_LONG                  "result too long"
 #define DUK_STR_INVALID_CFUNC_RC                 "invalid C function rc"