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Implement tagged template literals (#3456)

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Missing features: snapshot support

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
This commit is contained in:
Robert Fancsik
2019-12-19 19:10:45 +01:00
committed by GitHub
parent 7bfbc701d8
commit 9596a7e1d6
28 changed files with 1229 additions and 314 deletions
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jerry-core/ecma/base/ecma-helpers.c
+62
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@@ -1461,6 +1461,23 @@ ecma_bytecode_deref (ecma_compiled_code_t *bytecode_p) /**< byte code pointer */
}
#endif /* ENABLED (JERRY_DEBUGGER) */
#if ENABLED (JERRY_ES2015)
if (bytecode_p->status_flags & CBC_CODE_FLAG_HAS_TAGGED_LITERALS)
{
ecma_length_t formal_params_number = ecma_compiled_code_get_formal_params (bytecode_p);
uint8_t *byte_p = (uint8_t *) bytecode_p;
byte_p += ((size_t) bytecode_p->size) << JMEM_ALIGNMENT_LOG;
ecma_value_t *tagged_base_p = (ecma_value_t *) byte_p;
tagged_base_p -= formal_params_number;
ecma_collection_t *coll_p = ECMA_GET_INTERNAL_VALUE_POINTER (ecma_collection_t, tagged_base_p[-1]);
ecma_collection_destroy (coll_p);
}
#endif /* ENABLED (JERRY_ES2015) */
#if ENABLED (JERRY_MEM_STATS)
jmem_stats_free_byte_code_bytes (((size_t) bytecode_p->size) << JMEM_ALIGNMENT_LOG);
#endif /* ENABLED (JERRY_MEM_STATS) */
@@ -1478,6 +1495,51 @@ ecma_bytecode_deref (ecma_compiled_code_t *bytecode_p) /**< byte code pointer */
((size_t) bytecode_p->size) << JMEM_ALIGNMENT_LOG);
} /* ecma_bytecode_deref */
#if ENABLED (JERRY_ES2015)
/**
* Get the tagged template collection of the compiled code
*
* @return pointer to the tagged template collection
*/
ecma_collection_t *
ecma_compiled_code_get_tagged_template_collection (const ecma_compiled_code_t *bytecode_header_p) /**< compiled code */
{
JERRY_ASSERT (bytecode_header_p != NULL);
JERRY_ASSERT (bytecode_header_p->status_flags & CBC_CODE_FLAG_HAS_TAGGED_LITERALS);
uint8_t *byte_p = (uint8_t *) bytecode_header_p;
byte_p += ((size_t) bytecode_header_p->size) << JMEM_ALIGNMENT_LOG;
ecma_value_t *tagged_base_p = (ecma_value_t *) byte_p;
tagged_base_p -= ecma_compiled_code_get_formal_params (bytecode_header_p);
return ECMA_GET_INTERNAL_VALUE_POINTER (ecma_collection_t, tagged_base_p[-1]);
} /* ecma_compiled_code_get_tagged_template_collection */
#endif /* ENABLED (JERRY_ES2015) */
#if ENABLED (JERRY_LINE_INFO) || ENABLED (JERRY_ES2015_MODULE_SYSTEM) || ENABLED (JERRY_ES2015)
/**
* Get the number of formal parameters of the compiled code
*
* @return number of formal parameters
*/
ecma_length_t
ecma_compiled_code_get_formal_params (const ecma_compiled_code_t *bytecode_header_p) /**< compiled code */
{
if (!(bytecode_header_p->status_flags & CBC_CODE_FLAGS_MAPPED_ARGUMENTS_NEEDED))
{
return 0;
}
if (bytecode_header_p->status_flags & CBC_CODE_FLAGS_UINT16_ARGUMENTS)
{
return ((cbc_uint16_arguments_t *) bytecode_header_p)->argument_end;
}
return ((cbc_uint8_arguments_t *) bytecode_header_p)->argument_end;
} /* ecma_compiled_code_get_formal_params */
#endif /* ENABLED (JERRY_LINE_INFO) || ENABLED (JERRY_ES2015_MODULE_SYSTEM) || ENABLED (JERRY_ES2015) */
#if (JERRY_STACK_LIMIT != 0)
/**
* Check the current stack usage by calculating the difference from the initial stack base.