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jerryscript/jerry-core/parser/js/js-parser-statm.c
Péter Gál 01ecc7bb7b Rework usages/naming of configuration macros [part 2] (#2903) 
There are quite a few configuration macros in the project.
As discussed in the #2520 issue there are a few awkward constructs.

Main changes:

* The following macros are now 0/1 switches:
** Renamed CONFIG_ECMA_LCACHE_DISABLE to JERRY_LCACHE.
** Renamed CONFIG_ECMA_PROPERTY_HASHMAP_DISABLE to JERRY_PROPERTY_HASHMAP.
** Renamed CONFIG_DISABLE_UNICODE_CASE_CONVERSION to JERRY_UNICODE_CASE_CONVERSION.
** Renamed ENABLE_REGEXP_STRICT_MODE to JERRY_REGEXP_STRICT_MODE.
** Renamed JERRY_DISABLE_JS_PARSER to JERRY_PARSER.
** Renamed JERRY_ENABLE_ERROR_MESSAGES to JERRY_ERROR_MESSAGES.
** Renamed JERRY_ENABLE_EXTERNAL_CONTEXT to JERRY_EXTERNAL_CONTEXT.
** Renamed JERRY_ENABLE_LINE_INFO to JERRY_LINE_INFO.
** Renamed JERRY_ENABLE_LOGGING to JERRY_LOGGING.
** Renamed JERRY_ENABLE_SNAPSHOT_EXEC to JERRY_SNAPSHOT_EXEC.
** Renamed JERRY_ENABLE_SNAPSHOT_SAVE to JERRY_SNAPSHOT_SAVE.
** Renamed JERRY_SYSTEM_ALLOCATOR to JERRY_SYSTEM_ALLOCATOR.
** Renamed JERRY_VM_EXEC_STOP to JERRY_VM_EXEC_STOP.
** Renamed JMEM_GC_BEFORE_EACH_ALLOC to JERRY_MEM_GC_BEFORE_EACH_ALLOC.
** Renamed JMEM_STATS to JERRY_MEM_STATS.
** Renamed PARSER_DUMP_BYTE_CODE to JERRY_PARSER_DUMP_BYTE_CODE.
** Renamed REGEXP_DUMP_BYTE_CODE to JERRY_REGEXP_DUMP_BYTE_CODE.
* Recursion check changes:
** Renamed REGEXP_RECURSION_LIMIT to JERRY_REGEXP_RECURSION_LIMIT.
** Renamed VM_RECURSION_LIMIT to JERRY_VM_RECURSION_LIMIT.
* Attribute macro changes:
** Renamed JERRY_CONST_DATA to JERRY_ATTR_CONST_DATA.
** Renamed JERRY_HEAP_SECTION_ATTR to JERRY_ATTR_GLOBAL_HEAP.
  Now the macro can specify any attribute for the global heap object.
* Other macro changes:
** Renamed CONFIG_MEM_HEAP_AREA_SIZE to JERRY_GLOBAL_HEAP_SIZE.
   Then new macro now specify the global heap size in kilobytes.
* Updated documentations to reflect the new macro names.

For more deatils please see jerry-core/config.h.

JerryScript-DCO-1.0-Signed-off-by: Peter Gal pgal.u-szeged@partner.samsung.com
2019-06-19 12:28:21 +02:00

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/* Copyright JS Foundation and other contributors, http://js.foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "js-parser-internal.h"
#if ENABLED (JERRY_PARSER)
#include "jcontext.h"
#include "ecma-helpers.h"
#include "lit-char-helpers.h"
#if ENABLED (JERRY_ES2015_FOR_OF)
#if !ENABLED (JERRY_ES2015_BUILTIN_ITERATOR)
#error "For of support requires ES2015 iterator support"
#endif /* !ENABLED (JERRY_ES2015_BUILTIN_ITERATOR) */
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
/** \addtogroup parser Parser
* @{
*
* \addtogroup jsparser JavaScript
* @{
*
* \addtogroup jsparser_stmt Statement parser
* @{
*/
/**
* @{
* Strict mode string literal in directive prologues
*/
#define PARSER_USE_STRICT_LITERAL "use strict"
#define PARSER_USE_STRICT_LENGTH 10
/** @} */
/**
* Parser statement types.
*
* When a new statement is added, the following
* functions may need to be updated as well:
*
* - parser_statement_length()
* - parser_parse_break_statement()
* - parser_parse_continue_statement()
* - parser_free_jumps()
* - 'case LEXER_RIGHT_BRACE:' in parser_parse_statements()
* - 'if (context_p->token.type == LEXER_RIGHT_BRACE)' in parser_parse_statements()
* - 'switch (context_p->stack_top_uint8)' in parser_parse_statements()
*/
typedef enum
{
PARSER_STATEMENT_START,
PARSER_STATEMENT_BLOCK,
PARSER_STATEMENT_LABEL,
PARSER_STATEMENT_IF,
PARSER_STATEMENT_ELSE,
/* From switch -> for-in : break target statements */
PARSER_STATEMENT_SWITCH,
PARSER_STATEMENT_SWITCH_NO_DEFAULT,
/* From do-while -> for->in : continue target statements */
PARSER_STATEMENT_DO_WHILE,
PARSER_STATEMENT_WHILE,
PARSER_STATEMENT_FOR,
/* From for->in -> try : instructions with context
* Break and continue uses another instruction form
* when crosses their borders. */
PARSER_STATEMENT_FOR_IN,
#if ENABLED (JERRY_ES2015_FOR_OF)
PARSER_STATEMENT_FOR_OF,
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
PARSER_STATEMENT_WITH,
PARSER_STATEMENT_TRY,
} parser_statement_type_t;
/**
* Loop statement.
*/
typedef struct
{
parser_branch_node_t *branch_list_p; /**< list of breaks and continues targeting this statement */
} parser_loop_statement_t;
/**
* Label statement.
*/
typedef struct
{
lexer_lit_location_t label_ident; /**< name of the label */
parser_branch_node_t *break_list_p; /**< list of breaks targeting this label */
} parser_label_statement_t;
/**
* If/else statement.
*/
typedef struct
{
parser_branch_t branch; /**< branch to the end */
} parser_if_else_statement_t;
/**
* Switch statement.
*/
typedef struct
{
parser_branch_t default_branch; /**< branch to the default case */
parser_branch_node_t *branch_list_p; /**< branches of case statements */
} parser_switch_statement_t;
/**
* Do-while statement.
*/
typedef struct
{
uint32_t start_offset; /**< start byte code offset */
} parser_do_while_statement_t;
/**
* While statement.
*/
typedef struct
{
parser_branch_t branch; /**< branch to the end */
lexer_range_t condition_range; /**< condition part */
uint32_t start_offset; /**< start byte code offset */
} parser_while_statement_t;
/**
* For statement.
*/
typedef struct
{
parser_branch_t branch; /**< branch to the end */
lexer_range_t condition_range; /**< condition part */
lexer_range_t expression_range; /**< increase part */
uint32_t start_offset; /**< start byte code offset */
} parser_for_statement_t;
/**
* For-in statement.
*/
typedef struct
{
parser_branch_t branch; /**< branch to the end */
uint32_t start_offset; /**< start byte code offset */
} parser_for_in_statement_t;
#if ENABLED (JERRY_ES2015_FOR_OF)
/**
* For-of statement.
*/
typedef struct
{
parser_branch_t branch; /**< branch to the end */
uint32_t start_offset; /**< start byte code offset */
} parser_for_of_statement_t;
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
/**
* With statement.
*/
typedef struct
{
parser_branch_t branch; /**< branch to the end */
} parser_with_statement_t;
/**
* Lexer token types.
*/
typedef enum
{
parser_try_block, /**< try block */
parser_catch_block, /**< catch block */
parser_finally_block, /**< finally block */
} parser_try_block_type_t;
/**
* Try statement.
*/
typedef struct
{
parser_try_block_type_t type; /**< current block type */
parser_branch_t branch; /**< branch to the end of the current block */
} parser_try_statement_t;
/**
* Returns the data consumed by a statement. It can be used
* to skip undesired frames on the stack during frame search.
*
* @return size consumed by a statement.
*/
static inline size_t
parser_statement_length (uint8_t type) /**< type of statement */
{
static const uint8_t statement_lengths[] =
{
/* PARSER_STATEMENT_BLOCK */
1,
/* PARSER_STATEMENT_LABEL */
(uint8_t) (sizeof (parser_label_statement_t) + 1),
/* PARSER_STATEMENT_IF */
(uint8_t) (sizeof (parser_if_else_statement_t) + 1),
/* PARSER_STATEMENT_ELSE */
(uint8_t) (sizeof (parser_if_else_statement_t) + 1),
/* PARSER_STATEMENT_SWITCH */
(uint8_t) (sizeof (parser_switch_statement_t) + sizeof (parser_loop_statement_t) + 1),
/* PARSER_STATEMENT_SWITCH_NO_DEFAULT */
(uint8_t) (sizeof (parser_switch_statement_t) + sizeof (parser_loop_statement_t) + 1),
/* PARSER_STATEMENT_DO_WHILE */
(uint8_t) (sizeof (parser_do_while_statement_t) + sizeof (parser_loop_statement_t) + 1),
/* PARSER_STATEMENT_WHILE */
(uint8_t) (sizeof (parser_while_statement_t) + sizeof (parser_loop_statement_t) + 1),
/* PARSER_STATEMENT_FOR */
(uint8_t) (sizeof (parser_for_statement_t) + sizeof (parser_loop_statement_t) + 1),
/* PARSER_STATEMENT_FOR_IN */
(uint8_t) (sizeof (parser_for_in_statement_t) + sizeof (parser_loop_statement_t) + 1),
#if ENABLED (JERRY_ES2015_FOR_OF)
/* PARSER_STATEMENT_FOR_OF */
(uint8_t) (sizeof (parser_for_of_statement_t) + sizeof (parser_loop_statement_t) + 1),
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
/* PARSER_STATEMENT_WITH */
(uint8_t) (sizeof (parser_with_statement_t) + 1),
/* PARSER_STATEMENT_TRY */
(uint8_t) (sizeof (parser_try_statement_t) + 1),
};
JERRY_ASSERT (type >= PARSER_STATEMENT_BLOCK && type <= PARSER_STATEMENT_TRY);
return statement_lengths[type - PARSER_STATEMENT_BLOCK];
} /* parser_statement_length */
/**
* Initialize a range from the current location.
*/
static inline void
parser_save_range (parser_context_t *context_p, /**< context */
lexer_range_t *range_p, /**< destination range */
const uint8_t *source_end_p) /**< source end */
{
range_p->source_p = context_p->source_p;
range_p->source_end_p = source_end_p;
range_p->line = context_p->line;
range_p->column = context_p->column;
} /* parser_save_range */
/**
* Set the current location on the stack.
*/
static inline void
parser_set_range (parser_context_t *context_p, /**< context */
lexer_range_t *range_p) /**< destination range */
{
context_p->source_p = range_p->source_p;
context_p->source_end_p = range_p->source_end_p;
context_p->line = range_p->line;
context_p->column = range_p->column;
} /* parser_set_range */
/**
* Initialize stack iterator.
*/
static inline void
parser_stack_iterator_init (parser_context_t *context_p, /**< context */
parser_stack_iterator_t *iterator) /**< iterator */
{
iterator->current_p = context_p->stack.first_p;
iterator->current_position = context_p->stack.last_position;
} /* parser_stack_iterator_init */
/**
* Read the next byte from the stack.
*
* @return byte
*/
static inline uint8_t
parser_stack_iterator_read_uint8 (parser_stack_iterator_t *iterator) /**< iterator */
{
JERRY_ASSERT (iterator->current_position > 0 && iterator->current_position <= PARSER_STACK_PAGE_SIZE);
return iterator->current_p->bytes[iterator->current_position - 1];
} /* parser_stack_iterator_read_uint8 */
/**
* Change last byte of the stack.
*/
static inline void
parser_stack_change_last_uint8 (parser_context_t *context_p, /**< context */
uint8_t new_value) /**< new value */
{
parser_mem_page_t *page_p = context_p->stack.first_p;
JERRY_ASSERT (page_p != NULL
&& context_p->stack_top_uint8 == page_p->bytes[context_p->stack.last_position - 1]);
page_p->bytes[context_p->stack.last_position - 1] = new_value;
context_p->stack_top_uint8 = new_value;
} /* parser_stack_change_last_uint8 */
/**
* Parse expression enclosed in parens.
*/
static inline void
parser_parse_enclosed_expr (parser_context_t *context_p) /**< context */
{
lexer_next_token (context_p);
if (context_p->token.type != LEXER_LEFT_PAREN)
{
parser_raise_error (context_p, PARSER_ERR_LEFT_PAREN_EXPECTED);
}
lexer_next_token (context_p);
parser_parse_expression (context_p, PARSE_EXPR);
if (context_p->token.type != LEXER_RIGHT_PAREN)
{
parser_raise_error (context_p, PARSER_ERR_RIGHT_PAREN_EXPECTED);
}
lexer_next_token (context_p);
} /* parser_parse_enclosed_expr */
/**
* Parse var statement.
*/
static void
parser_parse_var_statement (parser_context_t *context_p) /**< context */
{
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_VAR);
while (true)
{
lexer_expect_identifier (context_p, LEXER_IDENT_LITERAL);
JERRY_ASSERT (context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_IDENT_LITERAL);
#if defined (JERRY_DEBUGGER) || ENABLED (JERRY_LINE_INFO)
parser_line_counter_t ident_line_counter = context_p->token.line;
#endif /* JERRY_DEBUGGER || ENABLED (JERRY_LINE_INFO) */
context_p->lit_object.literal_p->status_flags |= LEXER_FLAG_VAR;
#if ENABLED (JERRY_ES2015_MODULE_SYSTEM)
if (context_p->status_flags & PARSER_MODULE_STORE_IDENT)
{
context_p->module_identifier_lit_p = context_p->lit_object.literal_p;
context_p->status_flags &= (uint32_t) ~(PARSER_MODULE_STORE_IDENT);
}
#endif /* ENABLED (JERRY_ES2015_MODULE_SYSTEM) */
lexer_next_token (context_p);
if (context_p->token.type == LEXER_ASSIGN)
{
#ifdef JERRY_DEBUGGER
if ((JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_CONNECTED)
&& ident_line_counter != context_p->last_breakpoint_line)
{
parser_emit_cbc (context_p, CBC_BREAKPOINT_DISABLED);
parser_flush_cbc (context_p);
parser_append_breakpoint_info (context_p, JERRY_DEBUGGER_BREAKPOINT_LIST, ident_line_counter);
context_p->last_breakpoint_line = ident_line_counter;
}
#endif /* JERRY_DEBUGGER */
#if ENABLED (JERRY_LINE_INFO)
if (ident_line_counter != context_p->last_line_info_line)
{
parser_emit_line_info (context_p, ident_line_counter, false);
}
#endif /* ENABLED (JERRY_LINE_INFO) */
parser_emit_cbc_literal_from_token (context_p, CBC_PUSH_LITERAL);
parser_parse_expression (context_p,
PARSE_EXPR_STATEMENT | PARSE_EXPR_NO_COMMA | PARSE_EXPR_HAS_LITERAL);
}
if (context_p->token.type != LEXER_COMMA)
{
break;
}
}
} /* parser_parse_var_statement */
/**
* Parse function statement.
*/
static void
parser_parse_function_statement (parser_context_t *context_p) /**< context */
{
uint32_t status_flags;
lexer_literal_t *name_p;
lexer_literal_t *literal_p;
uint8_t no_reg_store;
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_FUNCTION);
#ifdef JERRY_DEBUGGER
parser_line_counter_t debugger_line = context_p->token.line;
parser_line_counter_t debugger_column = context_p->token.column;
#endif /* JERRY_DEBUGGER */
lexer_expect_identifier (context_p, LEXER_IDENT_LITERAL);
JERRY_ASSERT (context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_IDENT_LITERAL);
if (context_p->lit_object.type == LEXER_LITERAL_OBJECT_ARGUMENTS)
{
context_p->status_flags |= PARSER_ARGUMENTS_NOT_NEEDED;
}
name_p = context_p->lit_object.literal_p;
#if ENABLED (JERRY_ES2015_MODULE_SYSTEM)
if (context_p->status_flags & PARSER_MODULE_STORE_IDENT)
{
context_p->module_identifier_lit_p = context_p->lit_object.literal_p;
context_p->status_flags &= (uint32_t) ~(PARSER_MODULE_STORE_IDENT);
}
#endif /* ENABLED (JERRY_ES2015_MODULE_SYSTEM) */
status_flags = PARSER_IS_FUNCTION | PARSER_IS_CLOSURE;
if (context_p->lit_object.type != LEXER_LITERAL_OBJECT_ANY)
{
JERRY_ASSERT (context_p->lit_object.type == LEXER_LITERAL_OBJECT_EVAL
|| context_p->lit_object.type == LEXER_LITERAL_OBJECT_ARGUMENTS);
status_flags |= PARSER_HAS_NON_STRICT_ARG;
}
#ifdef JERRY_DEBUGGER
if (JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_CONNECTED)
{
jerry_debugger_send_string (JERRY_DEBUGGER_FUNCTION_NAME,
JERRY_DEBUGGER_NO_SUBTYPE,
name_p->u.char_p,
name_p->prop.length);
/* Reset token position for the function. */
context_p->token.line = debugger_line;
context_p->token.column = debugger_column;
}
#endif /* JERRY_DEBUGGER */
if (name_p->status_flags & LEXER_FLAG_INITIALIZED)
{
if (!(name_p->status_flags & LEXER_FLAG_FUNCTION_ARGUMENT))
{
/* Overwrite the previous initialization. */
ecma_compiled_code_t *compiled_code_p;
literal_p = PARSER_GET_LITERAL ((size_t) (context_p->lit_object.index + 1));
JERRY_ASSERT (literal_p->type == LEXER_FUNCTION_LITERAL
&& literal_p->status_flags == 0);
compiled_code_p = parser_parse_function (context_p, status_flags);
util_free_literal (literal_p);
literal_p->u.bytecode_p = compiled_code_p;
lexer_next_token (context_p);
return;
}
}
else if (context_p->lit_object.index + 1 == context_p->literal_count)
{
/* The most common case: the literal is the last literal. */
name_p->status_flags |= LEXER_FLAG_VAR | LEXER_FLAG_INITIALIZED;
lexer_construct_function_object (context_p, status_flags);
lexer_next_token (context_p);
return;
}
/* Clone the literal at the end. */
if (context_p->literal_count >= PARSER_MAXIMUM_NUMBER_OF_LITERALS)
{
parser_raise_error (context_p, PARSER_ERR_LITERAL_LIMIT_REACHED);
}
literal_p = (lexer_literal_t *) parser_list_append (context_p, &context_p->literal_pool);
*literal_p = *name_p;
no_reg_store = name_p->status_flags & (LEXER_FLAG_NO_REG_STORE | LEXER_FLAG_SOURCE_PTR);
literal_p->status_flags = LEXER_FLAG_VAR | LEXER_FLAG_INITIALIZED | no_reg_store;
name_p->type = LEXER_UNUSED_LITERAL;
name_p->status_flags &= LEXER_FLAG_FUNCTION_ARGUMENT | LEXER_FLAG_SOURCE_PTR;
/* Byte code references to this literal are
* redirected to the newly allocated literal. */
name_p->prop.index = context_p->literal_count;
context_p->literal_count++;
lexer_construct_function_object (context_p, status_flags);
lexer_next_token (context_p);
} /* parser_parse_function_statement */
/**
* Parse if statement (starting part).
*/
static void
parser_parse_if_statement_start (parser_context_t *context_p) /**< context */
{
parser_if_else_statement_t if_statement;
parser_parse_enclosed_expr (context_p);
parser_emit_cbc_forward_branch (context_p,
CBC_BRANCH_IF_FALSE_FORWARD,
&if_statement.branch);
parser_stack_push (context_p, &if_statement, sizeof (parser_if_else_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_IF);
parser_stack_iterator_init (context_p, &context_p->last_statement);
} /* parser_parse_if_statement_start */
/**
* Parse if statement (ending part).
*
* @return true - if parsing an 'else' statement
* false - otherwise
*/
static bool
parser_parse_if_statement_end (parser_context_t *context_p) /**< context */
{
parser_if_else_statement_t if_statement;
parser_if_else_statement_t else_statement;
parser_stack_iterator_t iterator;
JERRY_ASSERT (context_p->stack_top_uint8 == PARSER_STATEMENT_IF);
if (context_p->token.type != LEXER_KEYW_ELSE)
{
parser_stack_pop_uint8 (context_p);
parser_stack_pop (context_p, &if_statement, sizeof (parser_if_else_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
parser_set_branch_to_current_position (context_p, &if_statement.branch);
return false;
}
parser_stack_change_last_uint8 (context_p, PARSER_STATEMENT_ELSE);
parser_stack_iterator_init (context_p, &iterator);
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &if_statement, sizeof (parser_if_else_statement_t));
parser_emit_cbc_forward_branch (context_p,
CBC_JUMP_FORWARD,
&else_statement.branch);
parser_set_branch_to_current_position (context_p, &if_statement.branch);
parser_stack_iterator_write (&iterator, &else_statement, sizeof (parser_if_else_statement_t));
lexer_next_token (context_p);
return true;
} /* parser_parse_if_statement_end */
/**
* Parse with statement (starting part).
*/
static void
parser_parse_with_statement_start (parser_context_t *context_p) /**< context */
{
parser_with_statement_t with_statement;
if (context_p->status_flags & PARSER_IS_STRICT)
{
parser_raise_error (context_p, PARSER_ERR_WITH_NOT_ALLOWED);
}
parser_parse_enclosed_expr (context_p);
#ifndef JERRY_NDEBUG
PARSER_PLUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_WITH_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
context_p->status_flags |= PARSER_INSIDE_WITH | PARSER_LEXICAL_ENV_NEEDED;
parser_emit_cbc_ext_forward_branch (context_p,
CBC_EXT_WITH_CREATE_CONTEXT,
&with_statement.branch);
parser_stack_push (context_p, &with_statement, sizeof (parser_with_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_WITH);
parser_stack_iterator_init (context_p, &context_p->last_statement);
} /* parser_parse_with_statement_start */
/**
* Parse with statement (ending part).
*/
static void
parser_parse_with_statement_end (parser_context_t *context_p) /**< context */
{
parser_with_statement_t with_statement;
parser_stack_iterator_t iterator;
JERRY_ASSERT (context_p->status_flags & PARSER_INSIDE_WITH);
parser_stack_pop_uint8 (context_p);
parser_stack_pop (context_p, &with_statement, sizeof (parser_with_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
parser_flush_cbc (context_p);
PARSER_MINUS_EQUAL_U16 (context_p->stack_depth, PARSER_WITH_CONTEXT_STACK_ALLOCATION);
#ifndef JERRY_NDEBUG
PARSER_MINUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_WITH_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
parser_emit_cbc (context_p, CBC_CONTEXT_END);
parser_set_branch_to_current_position (context_p, &with_statement.branch);
parser_stack_iterator_init (context_p, &iterator);
while (true)
{
uint8_t type = parser_stack_iterator_read_uint8 (&iterator);
if (type == PARSER_STATEMENT_START)
{
context_p->status_flags &= (uint32_t) ~PARSER_INSIDE_WITH;
return;
}
if (type == PARSER_STATEMENT_WITH)
{
return;
}
parser_stack_iterator_skip (&iterator, parser_statement_length (type));
}
} /* parser_parse_with_statement_end */
#if ENABLED (JERRY_ES2015_CLASS)
/**
* Parse super class context like a with statement (starting part).
*/
void
parser_parse_super_class_context_start (parser_context_t *context_p) /**< context */
{
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_EXTENDS
|| (context_p->status_flags & PARSER_CLASS_HAS_SUPER));
parser_with_statement_t with_statement;
if (context_p->token.type == LEXER_KEYW_EXTENDS)
{
lexer_next_token (context_p);
/* NOTE: Currently there is no proper way to check whether the currently parsed expression
is a valid lefthand-side expression or not, so we do not throw syntax error and parse
the class extending value as an expression. */
parser_parse_expression (context_p, PARSE_EXPR | PARSE_EXPR_NO_COMMA);
}
else
{
JERRY_ASSERT (context_p->status_flags & PARSER_CLASS_HAS_SUPER);
parser_emit_cbc (context_p, CBC_PUSH_NULL);
context_p->status_flags |= PARSER_CLASS_IMPLICIT_SUPER;
}
#ifndef JERRY_NDEBUG
PARSER_PLUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_SUPER_CLASS_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
context_p->status_flags |= PARSER_CLASS_HAS_SUPER;
parser_emit_cbc_ext_forward_branch (context_p,
CBC_EXT_SUPER_CLASS_CREATE_CONTEXT,
&with_statement.branch);
parser_stack_push (context_p, &with_statement, sizeof (parser_with_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_WITH);
} /* parser_parse_super_class_context_start */
/**
* Parse super class context like a with statement (ending part).
*/
void
parser_parse_super_class_context_end (parser_context_t *context_p, /**< context */
bool is_statement) /**< true - if class is parsed as a statement
* false - otherwise (as an expression) */
{
parser_with_statement_t with_statement;
parser_stack_pop_uint8 (context_p);
parser_stack_pop (context_p, &with_statement, sizeof (parser_with_statement_t));
parser_flush_cbc (context_p);
PARSER_MINUS_EQUAL_U16 (context_p->stack_depth, PARSER_SUPER_CLASS_CONTEXT_STACK_ALLOCATION);
#ifndef JERRY_NDEBUG
PARSER_MINUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_SUPER_CLASS_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
if (is_statement)
{
parser_emit_cbc (context_p, CBC_CONTEXT_END);
}
else
{
parser_emit_cbc_ext (context_p, CBC_EXT_CLASS_EXPR_CONTEXT_END);
}
parser_set_branch_to_current_position (context_p, &with_statement.branch);
} /* parser_parse_super_class_context_end */
#endif /* ENABLED (JERRY_ES2015_CLASS) */
/**
* Parse do-while statement (ending part).
*/
static void
parser_parse_do_while_statement_end (parser_context_t *context_p) /**< context */
{
parser_loop_statement_t loop;
JERRY_ASSERT (context_p->stack_top_uint8 == PARSER_STATEMENT_DO_WHILE);
if (context_p->token.type != LEXER_KEYW_WHILE)
{
parser_raise_error (context_p, PARSER_ERR_WHILE_EXPECTED);
}
parser_stack_iterator_t iterator;
parser_stack_iterator_init (context_p, &iterator);
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &loop, sizeof (parser_loop_statement_t));
parser_set_continues_to_current_position (context_p, loop.branch_list_p);
parser_parse_enclosed_expr (context_p);
if (context_p->last_cbc_opcode != CBC_PUSH_FALSE)
{
cbc_opcode_t opcode = CBC_BRANCH_IF_TRUE_BACKWARD;
if (context_p->last_cbc_opcode == CBC_LOGICAL_NOT)
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
opcode = CBC_BRANCH_IF_FALSE_BACKWARD;
}
else if (context_p->last_cbc_opcode == CBC_PUSH_TRUE)
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
opcode = CBC_JUMP_BACKWARD;
}
parser_do_while_statement_t do_while_statement;
parser_stack_iterator_skip (&iterator, sizeof (parser_loop_statement_t));
parser_stack_iterator_read (&iterator, &do_while_statement, sizeof (parser_do_while_statement_t));
parser_emit_cbc_backward_branch (context_p, (uint16_t) opcode, do_while_statement.start_offset);
}
else
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
}
parser_stack_pop (context_p, NULL, 1 + sizeof (parser_loop_statement_t) + sizeof (parser_do_while_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
parser_set_breaks_to_current_position (context_p, loop.branch_list_p);
} /* parser_parse_do_while_statement_end */
/**
* Parse while statement (starting part).
*/
static void
parser_parse_while_statement_start (parser_context_t *context_p) /**< context */
{
parser_while_statement_t while_statement;
parser_loop_statement_t loop;
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_WHILE);
lexer_next_token (context_p);
if (context_p->token.type != LEXER_LEFT_PAREN)
{
parser_raise_error (context_p, PARSER_ERR_LEFT_PAREN_EXPECTED);
}
parser_emit_cbc_forward_branch (context_p, CBC_JUMP_FORWARD, &while_statement.branch);
JERRY_ASSERT (context_p->last_cbc_opcode == PARSER_CBC_UNAVAILABLE);
while_statement.start_offset = context_p->byte_code_size;
/* The conditional part is processed at the end. */
parser_scan_until (context_p, &while_statement.condition_range, LEXER_RIGHT_PAREN);
lexer_next_token (context_p);
loop.branch_list_p = NULL;
parser_stack_push (context_p, &while_statement, sizeof (parser_while_statement_t));
parser_stack_push (context_p, &loop, sizeof (parser_loop_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_WHILE);
parser_stack_iterator_init (context_p, &context_p->last_statement);
} /* parser_parse_while_statement_start */
/**
* Parse while statement (ending part).
*/
static void JERRY_ATTR_NOINLINE
parser_parse_while_statement_end (parser_context_t *context_p) /**< context */
{
parser_while_statement_t while_statement;
parser_loop_statement_t loop;
lexer_token_t current_token;
lexer_range_t range;
cbc_opcode_t opcode;
JERRY_ASSERT (context_p->stack_top_uint8 == PARSER_STATEMENT_WHILE);
parser_stack_iterator_t iterator;
parser_stack_iterator_init (context_p, &iterator);
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &loop, sizeof (parser_loop_statement_t));
parser_stack_iterator_skip (&iterator, sizeof (parser_loop_statement_t));
parser_stack_iterator_read (&iterator, &while_statement, sizeof (parser_while_statement_t));
parser_save_range (context_p, &range, context_p->source_end_p);
current_token = context_p->token;
parser_set_branch_to_current_position (context_p, &while_statement.branch);
parser_set_continues_to_current_position (context_p, loop.branch_list_p);
parser_set_range (context_p, &while_statement.condition_range);
lexer_next_token (context_p);
parser_parse_expression (context_p, PARSE_EXPR);
if (context_p->token.type != LEXER_EOS)
{
parser_raise_error (context_p, PARSER_ERR_INVALID_EXPRESSION);
}
opcode = CBC_BRANCH_IF_TRUE_BACKWARD;
if (context_p->last_cbc_opcode == CBC_LOGICAL_NOT)
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
opcode = CBC_BRANCH_IF_FALSE_BACKWARD;
}
else if (context_p->last_cbc_opcode == CBC_PUSH_TRUE)
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
opcode = CBC_JUMP_BACKWARD;
}
parser_stack_pop (context_p, NULL, 1 + sizeof (parser_loop_statement_t) + sizeof (parser_while_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
parser_emit_cbc_backward_branch (context_p, (uint16_t) opcode, while_statement.start_offset);
parser_set_breaks_to_current_position (context_p, loop.branch_list_p);
parser_set_range (context_p, &range);
context_p->token = current_token;
} /* parser_parse_while_statement_end */
/**
* Check whether the opcode is a valid LeftHandSide expression
* and convert it back to an assignment.
*
* @return the compatible assignment opcode
*/
static uint16_t
parser_check_left_hand_side_expression (parser_context_t *context_p, /**< context */
uint16_t opcode) /**< opcode to check */
{
if (opcode == CBC_PUSH_LITERAL
&& context_p->last_cbc.literal_type == LEXER_IDENT_LITERAL)
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
return CBC_ASSIGN_SET_IDENT;
}
else if (opcode == CBC_PUSH_PROP)
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
return CBC_ASSIGN;
}
else if (opcode == CBC_PUSH_PROP_LITERAL)
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
return CBC_ASSIGN_PROP_LITERAL;
}
else if (opcode == CBC_PUSH_PROP_LITERAL_LITERAL)
{
context_p->last_cbc_opcode = CBC_PUSH_TWO_LITERALS;
return CBC_ASSIGN;
}
else if (opcode == CBC_PUSH_PROP_THIS_LITERAL)
{
context_p->last_cbc_opcode = CBC_PUSH_THIS_LITERAL;
return CBC_ASSIGN;
}
else
{
/* Invalid LeftHandSide expression. */
parser_emit_cbc_ext (context_p, CBC_EXT_THROW_REFERENCE_ERROR);
return CBC_ASSIGN;
}
return opcode;
} /* parser_check_left_hand_side_expression */
/**
* Parse for statement (starting part).
*/
static void
parser_parse_for_statement_start (parser_context_t *context_p) /**< context */
{
parser_loop_statement_t loop;
lexer_range_t start_range;
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_FOR);
lexer_next_token (context_p);
if (context_p->token.type != LEXER_LEFT_PAREN)
{
parser_raise_error (context_p, PARSER_ERR_LEFT_PAREN_EXPECTED);
}
#if ENABLED (JERRY_ES2015_FOR_OF)
lexer_token_type_t scan_token = LEXER_FOR_IN_OF;
#else /* !ENABLED (JERRY_ES2015_FOR_OF) */
lexer_token_type_t scan_token = LEXER_KEYW_IN;
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
parser_scan_until (context_p, &start_range, scan_token);
if (context_p->token.type == LEXER_KEYW_IN)
{
parser_for_in_statement_t for_in_statement;
lexer_range_t range;
lexer_next_token (context_p);
parser_parse_expression (context_p, PARSE_EXPR);
if (context_p->token.type != LEXER_RIGHT_PAREN)
{
parser_raise_error (context_p, PARSER_ERR_RIGHT_PAREN_EXPECTED);
}
#ifndef JERRY_NDEBUG
PARSER_PLUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_FOR_IN_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
parser_emit_cbc_ext_forward_branch (context_p,
CBC_EXT_FOR_IN_CREATE_CONTEXT,
&for_in_statement.branch);
JERRY_ASSERT (context_p->last_cbc_opcode == PARSER_CBC_UNAVAILABLE);
for_in_statement.start_offset = context_p->byte_code_size;
parser_save_range (context_p, &range, context_p->source_end_p);
parser_set_range (context_p, &start_range);
lexer_next_token (context_p);
if (context_p->token.type == LEXER_KEYW_VAR)
{
uint16_t literal_index;
lexer_expect_identifier (context_p, LEXER_IDENT_LITERAL);
JERRY_ASSERT (context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_IDENT_LITERAL);
context_p->lit_object.literal_p->status_flags |= LEXER_FLAG_VAR;
literal_index = context_p->lit_object.index;
lexer_next_token (context_p);
if (context_p->token.type == LEXER_ASSIGN)
{
parser_branch_t branch;
/* Initialiser is never executed. */
parser_emit_cbc_forward_branch (context_p, CBC_JUMP_FORWARD, &branch);
lexer_next_token (context_p);
parser_parse_expression (context_p,
PARSE_EXPR_STATEMENT | PARSE_EXPR_NO_COMMA);
parser_set_branch_to_current_position (context_p, &branch);
}
parser_emit_cbc_ext (context_p, CBC_EXT_FOR_IN_GET_NEXT);
parser_emit_cbc_literal (context_p, CBC_ASSIGN_SET_IDENT, literal_index);
}
else
{
uint16_t opcode;
parser_parse_expression (context_p, PARSE_EXPR);
opcode = context_p->last_cbc_opcode;
/* The CBC_EXT_FOR_IN_CREATE_CONTEXT flushed the opcode combiner. */
JERRY_ASSERT (opcode != CBC_PUSH_TWO_LITERALS
&& opcode != CBC_PUSH_THREE_LITERALS);
opcode = parser_check_left_hand_side_expression (context_p, opcode);
parser_emit_cbc_ext (context_p, CBC_EXT_FOR_IN_GET_NEXT);
parser_flush_cbc (context_p);
context_p->last_cbc_opcode = opcode;
}
if (context_p->token.type != LEXER_EOS)
{
parser_raise_error (context_p, PARSER_ERR_IN_EXPECTED);
}
parser_flush_cbc (context_p);
parser_set_range (context_p, &range);
lexer_next_token (context_p);
loop.branch_list_p = NULL;
parser_stack_push (context_p, &for_in_statement, sizeof (parser_for_in_statement_t));
parser_stack_push (context_p, &loop, sizeof (parser_loop_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_FOR_IN);
parser_stack_iterator_init (context_p, &context_p->last_statement);
}
#if ENABLED (JERRY_ES2015_FOR_OF)
else if (context_p->token.type == LEXER_LITERAL_OF)
{
parser_for_of_statement_t for_of_statement;
lexer_range_t range;
lexer_next_token (context_p);
parser_parse_expression (context_p, PARSE_EXPR);
if (context_p->token.type != LEXER_RIGHT_PAREN)
{
parser_raise_error (context_p, PARSER_ERR_RIGHT_PAREN_EXPECTED);
}
#ifndef JERRY_NDEBUG
PARSER_PLUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
parser_emit_cbc_ext_forward_branch (context_p,
CBC_EXT_FOR_OF_CREATE_CONTEXT,
&for_of_statement.branch);
JERRY_ASSERT (context_p->last_cbc_opcode == PARSER_CBC_UNAVAILABLE);
for_of_statement.start_offset = context_p->byte_code_size;
parser_save_range (context_p, &range, context_p->source_end_p);
parser_set_range (context_p, &start_range);
lexer_next_token (context_p);
if (context_p->token.type == LEXER_KEYW_VAR)
{
uint16_t literal_index;
lexer_expect_identifier (context_p, LEXER_IDENT_LITERAL);
JERRY_ASSERT (context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_IDENT_LITERAL);
context_p->lit_object.literal_p->status_flags |= LEXER_FLAG_VAR;
literal_index = context_p->lit_object.index;
lexer_next_token (context_p);
if (context_p->token.type == LEXER_ASSIGN)
{
parser_branch_t branch;
/* Initialiser is never executed. */
parser_emit_cbc_forward_branch (context_p, CBC_JUMP_FORWARD, &branch);
lexer_next_token (context_p);
parser_parse_expression (context_p,
PARSE_EXPR_STATEMENT | PARSE_EXPR_NO_COMMA);
parser_set_branch_to_current_position (context_p, &branch);
}
parser_emit_cbc_ext (context_p, CBC_EXT_FOR_OF_GET_NEXT);
parser_emit_cbc_literal (context_p, CBC_ASSIGN_SET_IDENT, literal_index);
}
else
{
uint16_t opcode;
parser_parse_expression (context_p, PARSE_EXPR);
opcode = context_p->last_cbc_opcode;
/* The CBC_EXT_FOR_OF_CREATE_CONTEXT flushed the opcode combiner. */
JERRY_ASSERT (opcode != CBC_PUSH_TWO_LITERALS
&& opcode != CBC_PUSH_THREE_LITERALS);
opcode = parser_check_left_hand_side_expression (context_p, opcode);
parser_emit_cbc_ext (context_p, CBC_EXT_FOR_OF_GET_NEXT);
parser_flush_cbc (context_p);
context_p->last_cbc_opcode = opcode;
}
if (context_p->token.type != LEXER_EOS)
{
parser_raise_error (context_p, PARSER_ERR_OF_EXPECTED);
}
parser_flush_cbc (context_p);
parser_set_range (context_p, &range);
lexer_next_token (context_p);
loop.branch_list_p = NULL;
parser_stack_push (context_p, &for_of_statement, sizeof (parser_for_of_statement_t));
parser_stack_push (context_p, &loop, sizeof (parser_loop_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_FOR_OF);
parser_stack_iterator_init (context_p, &context_p->last_statement);
}
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
else
{
parser_for_statement_t for_statement;
start_range.source_end_p = context_p->source_end_p;
parser_set_range (context_p, &start_range);
lexer_next_token (context_p);
if (context_p->token.type != LEXER_SEMICOLON)
{
if (context_p->token.type == LEXER_KEYW_VAR)
{
parser_parse_var_statement (context_p);
}
else
{
parser_parse_expression (context_p, PARSE_EXPR_STATEMENT);
}
if (context_p->token.type != LEXER_SEMICOLON)
{
parser_raise_error (context_p, PARSER_ERR_SEMICOLON_EXPECTED);
}
}
parser_emit_cbc_forward_branch (context_p, CBC_JUMP_FORWARD, &for_statement.branch);
JERRY_ASSERT (context_p->last_cbc_opcode == PARSER_CBC_UNAVAILABLE);
for_statement.start_offset = context_p->byte_code_size;
/* The conditional and expression parts are processed at the end. */
parser_scan_until (context_p, &for_statement.condition_range, LEXER_SEMICOLON);
parser_scan_until (context_p, &for_statement.expression_range, LEXER_RIGHT_PAREN);
lexer_next_token (context_p);
loop.branch_list_p = NULL;
parser_stack_push (context_p, &for_statement, sizeof (parser_for_statement_t));
parser_stack_push (context_p, &loop, sizeof (parser_loop_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_FOR);
parser_stack_iterator_init (context_p, &context_p->last_statement);
}
} /* parser_parse_for_statement_start */
/**
* Parse for statement (ending part).
*/
static void JERRY_ATTR_NOINLINE
parser_parse_for_statement_end (parser_context_t *context_p) /**< context */
{
parser_for_statement_t for_statement;
parser_loop_statement_t loop;
lexer_token_t current_token;
lexer_range_t range;
cbc_opcode_t opcode;
JERRY_ASSERT (context_p->stack_top_uint8 == PARSER_STATEMENT_FOR);
parser_stack_iterator_t iterator;
parser_stack_iterator_init (context_p, &iterator);
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &loop, sizeof (parser_loop_statement_t));
parser_stack_iterator_skip (&iterator, sizeof (parser_loop_statement_t));
parser_stack_iterator_read (&iterator, &for_statement, sizeof (parser_for_statement_t));
parser_save_range (context_p, &range, context_p->source_end_p);
current_token = context_p->token;
parser_set_range (context_p, &for_statement.expression_range);
lexer_next_token (context_p);
parser_set_continues_to_current_position (context_p, loop.branch_list_p);
if (context_p->token.type != LEXER_EOS)
{
parser_parse_expression (context_p, PARSE_EXPR_STATEMENT);
if (context_p->token.type != LEXER_EOS)
{
parser_raise_error (context_p, PARSER_ERR_INVALID_EXPRESSION);
}
}
parser_set_branch_to_current_position (context_p, &for_statement.branch);
parser_set_range (context_p, &for_statement.condition_range);
lexer_next_token (context_p);
if (context_p->token.type != LEXER_EOS)
{
parser_parse_expression (context_p, PARSE_EXPR);
if (context_p->token.type != LEXER_EOS)
{
parser_raise_error (context_p, PARSER_ERR_INVALID_EXPRESSION);
}
opcode = CBC_BRANCH_IF_TRUE_BACKWARD;
if (context_p->last_cbc_opcode == CBC_LOGICAL_NOT)
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
opcode = CBC_BRANCH_IF_FALSE_BACKWARD;
}
else if (context_p->last_cbc_opcode == CBC_PUSH_TRUE)
{
context_p->last_cbc_opcode = PARSER_CBC_UNAVAILABLE;
opcode = CBC_JUMP_BACKWARD;
}
}
else
{
opcode = CBC_JUMP_BACKWARD;
}
parser_stack_pop (context_p, NULL, 1 + sizeof (parser_loop_statement_t) + sizeof (parser_for_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
parser_emit_cbc_backward_branch (context_p, (uint16_t) opcode, for_statement.start_offset);
parser_set_breaks_to_current_position (context_p, loop.branch_list_p);
parser_set_range (context_p, &range);
context_p->token = current_token;
} /* parser_parse_for_statement_end */
/**
* Parse switch statement (starting part).
*/
static void JERRY_ATTR_NOINLINE
parser_parse_switch_statement_start (parser_context_t *context_p) /**< context */
{
parser_switch_statement_t switch_statement;
parser_loop_statement_t loop;
parser_stack_iterator_t iterator;
lexer_range_t switch_body_start;
lexer_range_t unused_range;
bool switch_case_was_found;
bool default_case_was_found;
parser_branch_node_t *cases_p = NULL;
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_SWITCH);
parser_parse_enclosed_expr (context_p);
if (context_p->token.type != LEXER_LEFT_BRACE)
{
parser_raise_error (context_p, PARSER_ERR_LEFT_BRACE_EXPECTED);
}
parser_save_range (context_p, &switch_body_start, context_p->source_end_p);
lexer_next_token (context_p);
if (context_p->token.type == LEXER_RIGHT_BRACE)
{
/* Unlikely case, but possible. */
parser_emit_cbc (context_p, CBC_POP);
parser_flush_cbc (context_p);
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_BLOCK);
parser_stack_iterator_init (context_p, &context_p->last_statement);
return;
}
if (context_p->token.type != LEXER_KEYW_CASE
&& context_p->token.type != LEXER_KEYW_DEFAULT)
{
parser_raise_error (context_p, PARSER_ERR_INVALID_SWITCH);
}
/* The reason of using an iterator is error management. If an error
* occures, parser_free_jumps() free all data. However, the branches
* created by parser_emit_cbc_forward_branch_item() would not be freed.
* To free these branches, the current switch data is always stored
* on the stack. If any change happens, this data is updated. Updates
* are done using the iterator. */
switch_statement.branch_list_p = NULL;
loop.branch_list_p = NULL;
parser_stack_push (context_p, &switch_statement, sizeof (parser_switch_statement_t));
parser_stack_iterator_init (context_p, &iterator);
parser_stack_push (context_p, &loop, sizeof (parser_loop_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_SWITCH);
parser_stack_iterator_init (context_p, &context_p->last_statement);
switch_case_was_found = false;
default_case_was_found = false;
#if ENABLED (JERRY_LINE_INFO)
uint32_t last_line_info_line = context_p->last_line_info_line;
#endif /* ENABLED (JERRY_LINE_INFO) */
while (true)
{
parser_scan_until (context_p, &unused_range, LEXER_KEYW_CASE);
if (context_p->token.type == LEXER_KEYW_DEFAULT)
{
if (default_case_was_found)
{
parser_raise_error (context_p, PARSER_ERR_MULTIPLE_DEFAULTS_NOT_ALLOWED);
}
lexer_next_token (context_p);
if (context_p->token.type != LEXER_COLON)
{
parser_raise_error (context_p, PARSER_ERR_COLON_EXPECTED);
}
default_case_was_found = true;
}
else if (context_p->token.type == LEXER_KEYW_CASE
|| context_p->token.type == LEXER_RIGHT_BRACE)
{
if (switch_case_was_found)
{
parser_branch_node_t *new_case_p;
uint16_t opcode = CBC_BRANCH_IF_STRICT_EQUAL;
if (context_p->token.type != LEXER_KEYW_CASE)
{
/* We don't duplicate the value for the last case. */
parser_emit_cbc (context_p, CBC_STRICT_EQUAL);
opcode = CBC_BRANCH_IF_TRUE_FORWARD;
}
new_case_p = parser_emit_cbc_forward_branch_item (context_p, opcode, NULL);
if (cases_p == NULL)
{
switch_statement.branch_list_p = new_case_p;
parser_stack_iterator_write (&iterator, &switch_statement, sizeof (parser_switch_statement_t));
}
else
{
cases_p->next_p = new_case_p;
}
cases_p = new_case_p;
}
/* End of switch statement. */
if (context_p->token.type == LEXER_RIGHT_BRACE)
{
break;
}
lexer_next_token (context_p);
#if ENABLED (JERRY_LINE_INFO)
if (context_p->token.line != context_p->last_line_info_line)
{
parser_emit_line_info (context_p, context_p->token.line, true);
}
#endif /* ENABLED (JERRY_LINE_INFO) */
parser_parse_expression (context_p, PARSE_EXPR);
if (context_p->token.type != LEXER_COLON)
{
parser_raise_error (context_p, PARSER_ERR_COLON_EXPECTED);
}
switch_case_was_found = true;
}
lexer_next_token (context_p);
}
JERRY_ASSERT (switch_case_was_found || default_case_was_found);
#if ENABLED (JERRY_LINE_INFO)
context_p->last_line_info_line = last_line_info_line;
#endif /* ENABLED (JERRY_LINE_INFO) */
if (!switch_case_was_found)
{
/* There was no case statement, so the expression result
* of the switch must be popped from the stack */
parser_emit_cbc (context_p, CBC_POP);
}
parser_emit_cbc_forward_branch (context_p, CBC_JUMP_FORWARD, &switch_statement.default_branch);
parser_stack_iterator_write (&iterator, &switch_statement, sizeof (parser_switch_statement_t));
if (!default_case_was_found)
{
parser_stack_change_last_uint8 (context_p, PARSER_STATEMENT_SWITCH_NO_DEFAULT);
}
parser_set_range (context_p, &switch_body_start);
lexer_next_token (context_p);
} /* parser_parse_switch_statement_start */
/**
* Parse try statement (ending part).
*/
static void
parser_parse_try_statement_end (parser_context_t *context_p) /**< context */
{
parser_try_statement_t try_statement;
parser_stack_iterator_t iterator;
JERRY_ASSERT (context_p->stack_top_uint8 == PARSER_STATEMENT_TRY);
parser_stack_iterator_init (context_p, &iterator);
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &try_statement, sizeof (parser_try_statement_t));
lexer_next_token (context_p);
if (try_statement.type == parser_finally_block)
{
parser_flush_cbc (context_p);
PARSER_MINUS_EQUAL_U16 (context_p->stack_depth, PARSER_TRY_CONTEXT_STACK_ALLOCATION);
#ifndef JERRY_NDEBUG
PARSER_MINUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_TRY_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
parser_emit_cbc (context_p, CBC_CONTEXT_END);
parser_set_branch_to_current_position (context_p, &try_statement.branch);
}
else
{
parser_set_branch_to_current_position (context_p, &try_statement.branch);
if (try_statement.type == parser_catch_block)
{
if (context_p->token.type != LEXER_KEYW_FINALLY)
{
parser_flush_cbc (context_p);
PARSER_MINUS_EQUAL_U16 (context_p->stack_depth, PARSER_TRY_CONTEXT_STACK_ALLOCATION);
#ifndef JERRY_NDEBUG
PARSER_MINUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_TRY_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
parser_emit_cbc (context_p, CBC_CONTEXT_END);
parser_flush_cbc (context_p);
try_statement.type = parser_finally_block;
}
}
else if (try_statement.type == parser_try_block
&& context_p->token.type != LEXER_KEYW_CATCH
&& context_p->token.type != LEXER_KEYW_FINALLY)
{
parser_raise_error (context_p, PARSER_ERR_CATCH_FINALLY_EXPECTED);
}
}
if (try_statement.type == parser_finally_block)
{
parser_stack_pop (context_p, NULL, (uint32_t) (sizeof (parser_try_statement_t) + 1));
parser_stack_iterator_init (context_p, &context_p->last_statement);
return;
}
if (context_p->token.type == LEXER_KEYW_CATCH)
{
uint16_t literal_index;
lexer_next_token (context_p);
if (context_p->token.type != LEXER_LEFT_PAREN)
{
parser_raise_error (context_p, PARSER_ERR_LEFT_PAREN_EXPECTED);
}
lexer_expect_identifier (context_p, LEXER_IDENT_LITERAL);
JERRY_ASSERT (context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_IDENT_LITERAL);
context_p->lit_object.literal_p->status_flags |= LEXER_FLAG_NO_REG_STORE;
context_p->status_flags |= PARSER_LEXICAL_ENV_NEEDED;
literal_index = context_p->lit_object.index;
lexer_next_token (context_p);
if (context_p->token.type != LEXER_RIGHT_PAREN)
{
parser_raise_error (context_p, PARSER_ERR_RIGHT_PAREN_EXPECTED);
}
lexer_next_token (context_p);
if (context_p->token.type != LEXER_LEFT_BRACE)
{
parser_raise_error (context_p, PARSER_ERR_LEFT_BRACE_EXPECTED);
}
try_statement.type = parser_catch_block;
parser_emit_cbc_ext_forward_branch (context_p,
CBC_EXT_CATCH,
&try_statement.branch);
parser_emit_cbc_literal (context_p, CBC_ASSIGN_SET_IDENT, literal_index);
parser_flush_cbc (context_p);
}
else
{
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_FINALLY);
lexer_next_token (context_p);
if (context_p->token.type != LEXER_LEFT_BRACE)
{
parser_raise_error (context_p, PARSER_ERR_LEFT_BRACE_EXPECTED);
}
try_statement.type = parser_finally_block;
parser_emit_cbc_ext_forward_branch (context_p,
CBC_EXT_FINALLY,
&try_statement.branch);
}
lexer_next_token (context_p);
parser_stack_iterator_write (&iterator, &try_statement, sizeof (parser_try_statement_t));
} /* parser_parse_try_statement_end */
/**
* Parse default statement.
*/
static void
parser_parse_default_statement (parser_context_t *context_p) /**< context */
{
parser_stack_iterator_t iterator;
parser_switch_statement_t switch_statement;
if (context_p->stack_top_uint8 != PARSER_STATEMENT_SWITCH
&& context_p->stack_top_uint8 != PARSER_STATEMENT_SWITCH_NO_DEFAULT)
{
parser_raise_error (context_p, PARSER_ERR_DEFAULT_NOT_IN_SWITCH);
}
lexer_next_token (context_p);
/* Already checked in parser_parse_switch_statement_start. */
JERRY_ASSERT (context_p->token.type == LEXER_COLON);
lexer_next_token (context_p);
parser_stack_iterator_init (context_p, &iterator);
parser_stack_iterator_skip (&iterator, 1 + sizeof (parser_loop_statement_t));
parser_stack_iterator_read (&iterator, &switch_statement, sizeof (parser_switch_statement_t));
parser_set_branch_to_current_position (context_p, &switch_statement.default_branch);
} /* parser_parse_default_statement */
/**
* Parse case statement.
*/
static void
parser_parse_case_statement (parser_context_t *context_p) /**< context */
{
parser_stack_iterator_t iterator;
parser_switch_statement_t switch_statement;
lexer_range_t dummy_range;
parser_branch_node_t *branch_p;
if (context_p->stack_top_uint8 != PARSER_STATEMENT_SWITCH
&& context_p->stack_top_uint8 != PARSER_STATEMENT_SWITCH_NO_DEFAULT)
{
parser_raise_error (context_p, PARSER_ERR_CASE_NOT_IN_SWITCH);
}
parser_scan_until (context_p, &dummy_range, LEXER_COLON);
lexer_next_token (context_p);
parser_stack_iterator_init (context_p, &iterator);
parser_stack_iterator_skip (&iterator, 1 + sizeof (parser_loop_statement_t));
parser_stack_iterator_read (&iterator, &switch_statement, sizeof (parser_switch_statement_t));
/* Free memory after the case statement is found. */
branch_p = switch_statement.branch_list_p;
JERRY_ASSERT (branch_p != NULL);
switch_statement.branch_list_p = branch_p->next_p;
parser_stack_iterator_write (&iterator, &switch_statement, sizeof (parser_switch_statement_t));
parser_set_branch_to_current_position (context_p, &branch_p->branch);
parser_free (branch_p, sizeof (parser_branch_node_t));
} /* parser_parse_case_statement */
/**
* Parse break statement.
*/
static void
parser_parse_break_statement (parser_context_t *context_p) /**< context */
{
parser_stack_iterator_t iterator;
cbc_opcode_t opcode = CBC_JUMP_FORWARD;
lexer_next_token (context_p);
parser_stack_iterator_init (context_p, &iterator);
if (!(context_p->token.flags & LEXER_WAS_NEWLINE)
&& context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_IDENT_LITERAL)
{
/* The label with the same name is searched on the stack. */
while (true)
{
uint8_t type = parser_stack_iterator_read_uint8 (&iterator);
if (type == PARSER_STATEMENT_START)
{
parser_raise_error (context_p, PARSER_ERR_INVALID_BREAK_LABEL);
}
if (type == PARSER_STATEMENT_FOR_IN
#if ENABLED (JERRY_ES2015_FOR_OF)
|| type == PARSER_STATEMENT_FOR_OF
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
|| type == PARSER_STATEMENT_WITH
|| type == PARSER_STATEMENT_TRY)
{
opcode = CBC_JUMP_FORWARD_EXIT_CONTEXT;
}
if (type == PARSER_STATEMENT_LABEL)
{
parser_label_statement_t label_statement;
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &label_statement, sizeof (parser_label_statement_t));
if (lexer_compare_identifier_to_current (context_p, &label_statement.label_ident))
{
label_statement.break_list_p = parser_emit_cbc_forward_branch_item (context_p,
(uint16_t) opcode,
label_statement.break_list_p);
parser_stack_iterator_write (&iterator, &label_statement, sizeof (parser_label_statement_t));
lexer_next_token (context_p);
return;
}
parser_stack_iterator_skip (&iterator, sizeof (parser_label_statement_t));
}
else
{
parser_stack_iterator_skip (&iterator, parser_statement_length (type));
}
}
}
/* The first switch or loop statement is searched. */
while (true)
{
uint8_t type = parser_stack_iterator_read_uint8 (&iterator);
if (type == PARSER_STATEMENT_START)
{
parser_raise_error (context_p, PARSER_ERR_INVALID_BREAK);
}
if (type == PARSER_STATEMENT_FOR_IN
#if ENABLED (JERRY_ES2015_FOR_OF)
|| type == PARSER_STATEMENT_FOR_OF
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
|| type == PARSER_STATEMENT_WITH
|| type == PARSER_STATEMENT_TRY)
{
opcode = CBC_JUMP_FORWARD_EXIT_CONTEXT;
}
if (type == PARSER_STATEMENT_SWITCH
|| type == PARSER_STATEMENT_SWITCH_NO_DEFAULT
|| type == PARSER_STATEMENT_DO_WHILE
|| type == PARSER_STATEMENT_WHILE
|| type == PARSER_STATEMENT_FOR
#if ENABLED (JERRY_ES2015_FOR_OF)
|| type == PARSER_STATEMENT_FOR_OF
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
|| type == PARSER_STATEMENT_FOR_IN)
{
parser_loop_statement_t loop;
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &loop, sizeof (parser_loop_statement_t));
loop.branch_list_p = parser_emit_cbc_forward_branch_item (context_p,
(uint16_t) opcode,
loop.branch_list_p);
parser_stack_iterator_write (&iterator, &loop, sizeof (parser_loop_statement_t));
return;
}
parser_stack_iterator_skip (&iterator, parser_statement_length (type));
}
} /* parser_parse_break_statement */
/**
* Parse continue statement.
*/
static void
parser_parse_continue_statement (parser_context_t *context_p) /**< context */
{
parser_stack_iterator_t iterator;
cbc_opcode_t opcode = CBC_JUMP_FORWARD;
lexer_next_token (context_p);
parser_stack_iterator_init (context_p, &iterator);
if (!(context_p->token.flags & LEXER_WAS_NEWLINE)
&& context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_IDENT_LITERAL)
{
parser_stack_iterator_t loop_iterator;
bool for_in_of_was_seen = false;
loop_iterator.current_p = NULL;
/* The label with the same name is searched on the stack. */
while (true)
{
uint8_t type = parser_stack_iterator_read_uint8 (&iterator);
if (type == PARSER_STATEMENT_START)
{
parser_raise_error (context_p, PARSER_ERR_INVALID_CONTINUE_LABEL);
}
/* Only those labels are checked, whose are label of a loop. */
if (loop_iterator.current_p != NULL && type == PARSER_STATEMENT_LABEL)
{
parser_label_statement_t label_statement;
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &label_statement, sizeof (parser_label_statement_t));
if (lexer_compare_identifier_to_current (context_p, &label_statement.label_ident))
{
parser_loop_statement_t loop;
parser_stack_iterator_skip (&loop_iterator, 1);
parser_stack_iterator_read (&loop_iterator, &loop, sizeof (parser_loop_statement_t));
loop.branch_list_p = parser_emit_cbc_forward_branch_item (context_p,
(uint16_t) opcode,
loop.branch_list_p);
loop.branch_list_p->branch.offset |= CBC_HIGHEST_BIT_MASK;
parser_stack_iterator_write (&loop_iterator, &loop, sizeof (parser_loop_statement_t));
lexer_next_token (context_p);
return;
}
parser_stack_iterator_skip (&iterator, sizeof (parser_label_statement_t));
continue;
}
#if ENABLED (JERRY_ES2015_FOR_OF)
bool is_for_in_of_statement = (type == PARSER_STATEMENT_FOR_IN) || (type == PARSER_STATEMENT_FOR_OF);
#else /* !ENABLED (JERRY_ES2015_FOR_OF) */
bool is_for_in_of_statement = (type == PARSER_STATEMENT_FOR_IN);
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
if (type == PARSER_STATEMENT_WITH
|| type == PARSER_STATEMENT_TRY
|| for_in_of_was_seen)
{
opcode = CBC_JUMP_FORWARD_EXIT_CONTEXT;
}
else if (is_for_in_of_statement)
{
for_in_of_was_seen = true;
}
if (type == PARSER_STATEMENT_DO_WHILE
|| type == PARSER_STATEMENT_WHILE
|| type == PARSER_STATEMENT_FOR
#if ENABLED (JERRY_ES2015_FOR_OF)
|| type == PARSER_STATEMENT_FOR_OF
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
|| type == PARSER_STATEMENT_FOR_IN)
{
loop_iterator = iterator;
}
else
{
loop_iterator.current_p = NULL;
}
parser_stack_iterator_skip (&iterator, parser_statement_length (type));
}
}
/* The first loop statement is searched. */
while (true)
{
uint8_t type = parser_stack_iterator_read_uint8 (&iterator);
if (type == PARSER_STATEMENT_START)
{
parser_raise_error (context_p, PARSER_ERR_INVALID_CONTINUE);
}
if (type == PARSER_STATEMENT_DO_WHILE
|| type == PARSER_STATEMENT_WHILE
|| type == PARSER_STATEMENT_FOR
#if ENABLED (JERRY_ES2015_FOR_OF)
|| type == PARSER_STATEMENT_FOR_OF
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
|| type == PARSER_STATEMENT_FOR_IN)
{
parser_loop_statement_t loop;
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &loop, sizeof (parser_loop_statement_t));
loop.branch_list_p = parser_emit_cbc_forward_branch_item (context_p,
(uint16_t) opcode,
loop.branch_list_p);
loop.branch_list_p->branch.offset |= CBC_HIGHEST_BIT_MASK;
parser_stack_iterator_write (&iterator, &loop, sizeof (parser_loop_statement_t));
return;
}
if (type == PARSER_STATEMENT_WITH
|| type == PARSER_STATEMENT_TRY)
{
opcode = CBC_JUMP_FORWARD_EXIT_CONTEXT;
}
parser_stack_iterator_skip (&iterator, parser_statement_length (type));
}
} /* parser_parse_continue_statement */
#if ENABLED (JERRY_ES2015_MODULE_SYSTEM)
/**
* Parse import statement.
* Note: See 15.2.2
*/
static void
parser_parse_import_statement (parser_context_t *context_p) /**< parser context */
{
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_IMPORT);
parser_module_check_request_place (context_p);
parser_module_context_init (context_p);
ecma_module_node_t module_node;
memset (&module_node, 0, sizeof (ecma_module_node_t));
context_p->module_current_node_p = &module_node;
lexer_next_token (context_p);
/* Check for a ModuleSpecifier*/
if (context_p->token.type != LEXER_LITERAL
|| context_p->token.lit_location.type != LEXER_STRING_LITERAL)
{
if (!(context_p->token.type == LEXER_LEFT_BRACE
|| context_p->token.type == LEXER_MULTIPLY
|| (context_p->token.type == LEXER_LITERAL && context_p->token.lit_location.type == LEXER_IDENT_LITERAL)))
{
parser_raise_error (context_p, PARSER_ERR_LEFT_BRACE_MULTIPLY_LITERAL_EXPECTED);
}
if (context_p->token.type == LEXER_LITERAL)
{
/* Handle ImportedDefaultBinding */
lexer_construct_literal_object (context_p, &context_p->token.lit_location, LEXER_IDENT_LITERAL);
ecma_string_t *local_name_p = ecma_new_ecma_string_from_utf8 (context_p->lit_object.literal_p->u.char_p,
context_p->lit_object.literal_p->prop.length);
if (parser_module_check_duplicate_import (context_p, local_name_p))
{
ecma_deref_ecma_string (local_name_p);
parser_raise_error (context_p, PARSER_ERR_DUPLICATED_IMPORT_BINDING);
}
ecma_string_t *import_name_p = ecma_get_magic_string (LIT_MAGIC_STRING_DEFAULT);
parser_module_add_names_to_node (context_p, import_name_p, local_name_p);
ecma_deref_ecma_string (local_name_p);
ecma_deref_ecma_string (import_name_p);
lexer_next_token (context_p);
if (context_p->token.type != LEXER_COMMA
&& !lexer_compare_raw_identifier_to_current (context_p, "from", 4))
{
parser_raise_error (context_p, PARSER_ERR_FROM_COMMA_EXPECTED);
}
if (context_p->token.type == LEXER_COMMA)
{
lexer_next_token (context_p);
if (context_p->token.type != LEXER_MULTIPLY
&& context_p->token.type != LEXER_LEFT_BRACE)
{
parser_raise_error (context_p, PARSER_ERR_LEFT_BRACE_MULTIPLY_EXPECTED);
}
}
}
if (context_p->token.type == LEXER_MULTIPLY)
{
/* NameSpaceImport*/
lexer_next_token (context_p);
if (context_p->token.type != LEXER_LITERAL
|| !lexer_compare_raw_identifier_to_current (context_p, "as", 2))
{
parser_raise_error (context_p, PARSER_ERR_AS_EXPECTED);
}
lexer_next_token (context_p);
if (context_p->token.type != LEXER_LITERAL)
{
parser_raise_error (context_p, PARSER_ERR_IDENTIFIER_EXPECTED);
}
lexer_construct_literal_object (context_p, &context_p->token.lit_location, LEXER_IDENT_LITERAL);
ecma_string_t *local_name_p = ecma_new_ecma_string_from_utf8 (context_p->lit_object.literal_p->u.char_p,
context_p->lit_object.literal_p->prop.length);
if (parser_module_check_duplicate_import (context_p, local_name_p))
{
ecma_deref_ecma_string (local_name_p);
parser_raise_error (context_p, PARSER_ERR_DUPLICATED_IMPORT_BINDING);
}
ecma_string_t *import_name_p = ecma_get_magic_string (LIT_MAGIC_STRING_ASTERIX_CHAR);
parser_module_add_names_to_node (context_p, import_name_p, local_name_p);
ecma_deref_ecma_string (local_name_p);
ecma_deref_ecma_string (import_name_p);
lexer_next_token (context_p);
}
else if (context_p->token.type == LEXER_LEFT_BRACE)
{
/* Handle NamedImports */
parser_module_parse_import_clause (context_p);
}
if (context_p->token.type != LEXER_LITERAL || !lexer_compare_raw_identifier_to_current (context_p, "from", 4))
{
parser_raise_error (context_p, PARSER_ERR_FROM_EXPECTED);
}
lexer_next_token (context_p);
}
parser_module_handle_module_specifier (context_p);
parser_module_add_import_node_to_context (context_p);
context_p->module_current_node_p = NULL;
} /* parser_parse_import_statement */
/**
* Parse export statement.
*/
static void
parser_parse_export_statement (parser_context_t *context_p) /**< context */
{
JERRY_ASSERT (context_p->token.type == LEXER_KEYW_EXPORT);
parser_module_check_request_place (context_p);
parser_module_context_init (context_p);
ecma_module_node_t module_node;
memset (&module_node, 0, sizeof (ecma_module_node_t));
context_p->module_current_node_p = &module_node;
lexer_next_token (context_p);
switch (context_p->token.type)
{
case LEXER_KEYW_DEFAULT:
{
lexer_range_t range;
parser_save_range (context_p, &range, context_p->source_end_p);
context_p->status_flags |= PARSER_MODULE_STORE_IDENT;
lexer_next_token (context_p);
if (context_p->token.type == LEXER_KEYW_CLASS)
{
context_p->status_flags |= PARSER_MODULE_DEFAULT_CLASS_OR_FUNC;
parser_parse_class (context_p, true);
}
else if (context_p->token.type == LEXER_KEYW_FUNCTION)
{
context_p->status_flags |= PARSER_MODULE_DEFAULT_CLASS_OR_FUNC;
parser_parse_function_statement (context_p);
}
else
{
/* Assignment expression */
parser_set_range (context_p, &range);
/* 15.2.3.5 Use the synthetic name '*default*' as the identifier. */
lexer_construct_literal_object (context_p,
(lexer_lit_location_t *) &lexer_default_literal,
lexer_default_literal.type);
context_p->lit_object.literal_p->status_flags |= LEXER_FLAG_VAR;
context_p->token.lit_location.type = LEXER_IDENT_LITERAL;
parser_emit_cbc_literal_from_token (context_p, CBC_PUSH_LITERAL);
context_p->module_identifier_lit_p = context_p->lit_object.literal_p;
/* Fake an assignment to the default identifier */
context_p->token.type = LEXER_ASSIGN;
parser_parse_expression (context_p,
PARSE_EXPR_STATEMENT | PARSE_EXPR_NO_COMMA | PARSE_EXPR_HAS_LITERAL);
}
ecma_string_t *name_p = ecma_new_ecma_string_from_utf8 (context_p->module_identifier_lit_p->u.char_p,
context_p->module_identifier_lit_p->prop.length);
ecma_string_t *export_name_p = ecma_get_magic_string (LIT_MAGIC_STRING_DEFAULT);
if (parser_module_check_duplicate_export (context_p, export_name_p))
{
ecma_deref_ecma_string (name_p);
ecma_deref_ecma_string (export_name_p);
parser_raise_error (context_p, PARSER_ERR_DUPLICATED_EXPORT_IDENTIFIER);
}
parser_module_add_names_to_node (context_p,
export_name_p,
name_p);
ecma_deref_ecma_string (name_p);
ecma_deref_ecma_string (export_name_p);
break;
}
case LEXER_MULTIPLY:
{
lexer_next_token (context_p);
if (!(context_p->token.type == LEXER_LITERAL
&& lexer_compare_raw_identifier_to_current (context_p, "from", 4)))
{
parser_raise_error (context_p, PARSER_ERR_FROM_EXPECTED);
}
lexer_next_token (context_p);
parser_module_handle_module_specifier (context_p);
break;
}
case LEXER_KEYW_VAR:
{
context_p->status_flags |= PARSER_MODULE_STORE_IDENT;
parser_parse_var_statement (context_p);
ecma_string_t *name_p = ecma_new_ecma_string_from_utf8 (context_p->module_identifier_lit_p->u.char_p,
context_p->module_identifier_lit_p->prop.length);
if (parser_module_check_duplicate_export (context_p, name_p))
{
ecma_deref_ecma_string (name_p);
parser_raise_error (context_p, PARSER_ERR_DUPLICATED_EXPORT_IDENTIFIER);
}
parser_module_add_names_to_node (context_p,
name_p,
name_p);
ecma_deref_ecma_string (name_p);
break;
}
case LEXER_KEYW_CLASS:
{
context_p->status_flags |= PARSER_MODULE_STORE_IDENT;
parser_parse_class (context_p, true);
ecma_string_t *name_p = ecma_new_ecma_string_from_utf8 (context_p->module_identifier_lit_p->u.char_p,
context_p->module_identifier_lit_p->prop.length);
if (parser_module_check_duplicate_export (context_p, name_p))
{
ecma_deref_ecma_string (name_p);
parser_raise_error (context_p, PARSER_ERR_DUPLICATED_EXPORT_IDENTIFIER);
}
parser_module_add_names_to_node (context_p,
name_p,
name_p);
ecma_deref_ecma_string (name_p);
break;
}
case LEXER_KEYW_FUNCTION:
{
context_p->status_flags |= PARSER_MODULE_STORE_IDENT;
parser_parse_function_statement (context_p);
ecma_string_t *name_p = ecma_new_ecma_string_from_utf8 (context_p->module_identifier_lit_p->u.char_p,
context_p->module_identifier_lit_p->prop.length);
if (parser_module_check_duplicate_export (context_p, name_p))
{
ecma_deref_ecma_string (name_p);
parser_raise_error (context_p, PARSER_ERR_DUPLICATED_EXPORT_IDENTIFIER);
}
parser_module_add_names_to_node (context_p,
name_p,
name_p);
ecma_deref_ecma_string (name_p);
break;
}
case LEXER_LEFT_BRACE:
{
parser_module_parse_export_clause (context_p);
if (context_p->token.type == LEXER_LITERAL
&& lexer_compare_raw_identifier_to_current (context_p, "from", 4))
{
lexer_next_token (context_p);
parser_module_handle_module_specifier (context_p);
}
break;
}
default:
{
parser_raise_error (context_p, PARSER_ERR_LEFT_BRACE_MULTIPLY_LITERAL_EXPECTED);
break;
}
}
context_p->status_flags &= (uint32_t) ~(PARSER_MODULE_DEFAULT_CLASS_OR_FUNC | PARSER_MODULE_STORE_IDENT);
parser_module_add_export_node_to_context (context_p);
context_p->module_current_node_p = NULL;
} /* parser_parse_export_statement */
#endif /* ENABLED (JERRY_ES2015_MODULE_SYSTEM) */
/**
* Parse label statement.
*/
static void
parser_parse_label (parser_context_t *context_p) /**< context */
{
parser_stack_iterator_t iterator;
parser_label_statement_t label_statement;
parser_stack_iterator_init (context_p, &iterator);
while (true)
{
uint8_t type = parser_stack_iterator_read_uint8 (&iterator);
if (type == PARSER_STATEMENT_START)
{
break;
}
if (type == PARSER_STATEMENT_LABEL)
{
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &label_statement, sizeof (parser_label_statement_t));
parser_stack_iterator_skip (&iterator, sizeof (parser_label_statement_t));
if (lexer_compare_identifier_to_current (context_p, &label_statement.label_ident))
{
parser_raise_error (context_p, PARSER_ERR_DUPLICATED_LABEL);
}
}
else
{
parser_stack_iterator_skip (&iterator, parser_statement_length (type));
}
}
label_statement.label_ident = context_p->token.lit_location;
label_statement.break_list_p = NULL;
parser_stack_push (context_p, &label_statement, sizeof (parser_label_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_LABEL);
parser_stack_iterator_init (context_p, &context_p->last_statement);
} /* parser_parse_label */
/**
* Parse statements.
*/
void
parser_parse_statements (parser_context_t *context_p) /**< context */
{
/* Statement parsing cannot be nested. */
JERRY_ASSERT (context_p->last_statement.current_p == NULL);
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_START);
parser_stack_iterator_init (context_p, &context_p->last_statement);
#ifdef JERRY_DEBUGGER
/* Set lexical enviroment for the debugger. */
if (JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_CONNECTED)
{
context_p->status_flags |= PARSER_LEXICAL_ENV_NEEDED;
context_p->last_breakpoint_line = 0;
}
#endif /* JERRY_DEBUGGER */
#if ENABLED (JERRY_LINE_INFO)
if (JERRY_CONTEXT (resource_name) != ECMA_VALUE_UNDEFINED)
{
parser_emit_cbc_ext (context_p, CBC_EXT_RESOURCE_NAME);
parser_flush_cbc (context_p);
}
context_p->last_line_info_line = 0;
#endif /* ENABLED (JERRY_LINE_INFO) */
while (context_p->token.type == LEXER_LITERAL
&& context_p->token.lit_location.type == LEXER_STRING_LITERAL)
{
lexer_lit_location_t lit_location;
uint32_t status_flags = context_p->status_flags;
JERRY_ASSERT (context_p->stack_depth == 0);
lit_location = context_p->token.lit_location;
if (lit_location.length == PARSER_USE_STRICT_LENGTH
&& !lit_location.has_escape
&& memcmp (PARSER_USE_STRICT_LITERAL, lit_location.char_p, PARSER_USE_STRICT_LENGTH) == 0)
{
context_p->status_flags |= PARSER_IS_STRICT;
}
lexer_next_token (context_p);
if (context_p->token.type != LEXER_SEMICOLON
&& context_p->token.type != LEXER_RIGHT_BRACE
&& (!(context_p->token.flags & LEXER_WAS_NEWLINE)
|| LEXER_IS_BINARY_OP_TOKEN (context_p->token.type)
|| context_p->token.type == LEXER_LEFT_PAREN
|| context_p->token.type == LEXER_LEFT_SQUARE
|| context_p->token.type == LEXER_DOT))
{
/* The string is part of an expression statement. */
context_p->status_flags = status_flags;
#ifdef JERRY_DEBUGGER
if (JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_CONNECTED)
{
JERRY_ASSERT (context_p->last_breakpoint_line == 0);
parser_emit_cbc (context_p, CBC_BREAKPOINT_DISABLED);
parser_flush_cbc (context_p);
parser_append_breakpoint_info (context_p, JERRY_DEBUGGER_BREAKPOINT_LIST, context_p->token.line);
context_p->last_breakpoint_line = context_p->token.line;
}
#endif /* JERRY_DEBUGGER */
#if ENABLED (JERRY_LINE_INFO)
parser_emit_line_info (context_p, context_p->token.line, false);
#endif /* ENABLED (JERRY_LINE_INFO) */
lexer_construct_literal_object (context_p, &lit_location, LEXER_STRING_LITERAL);
parser_emit_cbc_literal_from_token (context_p, CBC_PUSH_LITERAL);
/* The extra_value is used for saving the token. */
context_p->token.extra_value = context_p->token.type;
context_p->token.type = LEXER_EXPRESSION_START;
break;
}
#if ENABLED (JERRY_PARSER_DUMP_BYTE_CODE)
if (context_p->is_show_opcodes
&& !(status_flags & PARSER_IS_STRICT)
&& (context_p->status_flags & PARSER_IS_STRICT))
{
JERRY_DEBUG_MSG (" Note: switch to strict mode\n\n");
}
#endif /* ENABLED (JERRY_PARSER_DUMP_BYTE_CODE) */
if (context_p->token.type == LEXER_SEMICOLON)
{
lexer_next_token (context_p);
}
/* The last directive prologue can be the result of the script. */
if (!(context_p->status_flags & PARSER_IS_FUNCTION)
&& (context_p->token.type != LEXER_LITERAL
|| context_p->token.lit_location.type != LEXER_STRING_LITERAL))
{
lexer_construct_literal_object (context_p, &lit_location, LEXER_STRING_LITERAL);
parser_emit_cbc_literal_from_token (context_p, CBC_PUSH_LITERAL);
parser_emit_cbc (context_p, CBC_POP_BLOCK);
parser_flush_cbc (context_p);
}
}
if (context_p->status_flags & PARSER_IS_STRICT
&& context_p->status_flags & PARSER_HAS_NON_STRICT_ARG)
{
parser_raise_error (context_p, PARSER_ERR_NON_STRICT_ARG_DEFINITION);
}
while (context_p->token.type != LEXER_EOS
|| context_p->stack_top_uint8 != PARSER_STATEMENT_START)
{
#ifndef JERRY_NDEBUG
JERRY_ASSERT (context_p->stack_depth == context_p->context_stack_depth);
#endif /* !JERRY_NDEBUG */
#ifdef JERRY_DEBUGGER
if (JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_CONNECTED
&& context_p->token.line != context_p->last_breakpoint_line
&& context_p->token.type != LEXER_SEMICOLON
&& context_p->token.type != LEXER_LEFT_BRACE
&& context_p->token.type != LEXER_RIGHT_BRACE
&& context_p->token.type != LEXER_KEYW_VAR
&& context_p->token.type != LEXER_KEYW_FUNCTION
&& context_p->token.type != LEXER_KEYW_CASE
&& context_p->token.type != LEXER_KEYW_DEFAULT)
{
parser_emit_cbc (context_p, CBC_BREAKPOINT_DISABLED);
parser_flush_cbc (context_p);
parser_append_breakpoint_info (context_p, JERRY_DEBUGGER_BREAKPOINT_LIST, context_p->token.line);
context_p->last_breakpoint_line = context_p->token.line;
}
#endif /* JERRY_DEBUGGER */
#if ENABLED (JERRY_LINE_INFO)
if (context_p->token.line != context_p->last_line_info_line
&& context_p->token.type != LEXER_SEMICOLON
&& context_p->token.type != LEXER_LEFT_BRACE
&& context_p->token.type != LEXER_RIGHT_BRACE
&& context_p->token.type != LEXER_KEYW_VAR
&& context_p->token.type != LEXER_KEYW_FUNCTION
&& context_p->token.type != LEXER_KEYW_CASE
&& context_p->token.type != LEXER_KEYW_DEFAULT)
{
parser_emit_line_info (context_p, context_p->token.line, true);
}
#endif /* ENABLED (JERRY_LINE_INFO) */
switch (context_p->token.type)
{
case LEXER_SEMICOLON:
{
break;
}
case LEXER_RIGHT_BRACE:
{
if (context_p->stack_top_uint8 == PARSER_STATEMENT_LABEL
|| context_p->stack_top_uint8 == PARSER_STATEMENT_IF
|| context_p->stack_top_uint8 == PARSER_STATEMENT_ELSE
|| context_p->stack_top_uint8 == PARSER_STATEMENT_DO_WHILE
|| context_p->stack_top_uint8 == PARSER_STATEMENT_WHILE
|| context_p->stack_top_uint8 == PARSER_STATEMENT_FOR
|| context_p->stack_top_uint8 == PARSER_STATEMENT_FOR_IN
#if ENABLED (JERRY_ES2015_FOR_OF)
|| context_p->stack_top_uint8 == PARSER_STATEMENT_FOR_OF
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
|| context_p->stack_top_uint8 == PARSER_STATEMENT_WITH)
{
parser_raise_error (context_p, PARSER_ERR_STATEMENT_EXPECTED);
}
break;
}
case LEXER_LEFT_BRACE:
{
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_BLOCK);
parser_stack_iterator_init (context_p, &context_p->last_statement);
lexer_next_token (context_p);
continue;
}
case LEXER_KEYW_VAR:
{
parser_parse_var_statement (context_p);
break;
}
#if ENABLED (JERRY_ES2015_CLASS)
case LEXER_KEYW_CLASS:
{
parser_parse_class (context_p, true);
continue;
}
#endif /* ENABLED (JERRY_ES2015_CLASS) */
#if ENABLED (JERRY_ES2015_MODULE_SYSTEM)
case LEXER_KEYW_IMPORT:
{
parser_parse_import_statement (context_p);
break;
}
case LEXER_KEYW_EXPORT:
{
parser_parse_export_statement (context_p);
break;
}
#endif /* ENABLED (JERRY_ES2015_MODULE_SYSTEM) */
case LEXER_KEYW_FUNCTION:
{
parser_parse_function_statement (context_p);
continue;
}
case LEXER_KEYW_IF:
{
parser_parse_if_statement_start (context_p);
continue;
}
case LEXER_KEYW_SWITCH:
{
parser_parse_switch_statement_start (context_p);
continue;
}
case LEXER_KEYW_DO:
{
parser_do_while_statement_t do_while_statement;
parser_loop_statement_t loop;
JERRY_ASSERT (context_p->last_cbc_opcode == PARSER_CBC_UNAVAILABLE);
do_while_statement.start_offset = context_p->byte_code_size;
loop.branch_list_p = NULL;
parser_stack_push (context_p, &do_while_statement, sizeof (parser_do_while_statement_t));
parser_stack_push (context_p, &loop, sizeof (parser_loop_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_DO_WHILE);
parser_stack_iterator_init (context_p, &context_p->last_statement);
lexer_next_token (context_p);
continue;
}
case LEXER_KEYW_WHILE:
{
parser_parse_while_statement_start (context_p);
continue;
}
case LEXER_KEYW_FOR:
{
parser_parse_for_statement_start (context_p);
continue;
}
case LEXER_KEYW_WITH:
{
parser_parse_with_statement_start (context_p);
continue;
}
case LEXER_KEYW_TRY:
{
parser_try_statement_t try_statement;
lexer_next_token (context_p);
if (context_p->token.type != LEXER_LEFT_BRACE)
{
parser_raise_error (context_p, PARSER_ERR_LEFT_BRACE_EXPECTED);
}
#ifndef JERRY_NDEBUG
PARSER_PLUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_TRY_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
try_statement.type = parser_try_block;
parser_emit_cbc_ext_forward_branch (context_p,
CBC_EXT_TRY_CREATE_CONTEXT,
&try_statement.branch);
parser_stack_push (context_p, &try_statement, sizeof (parser_try_statement_t));
parser_stack_push_uint8 (context_p, PARSER_STATEMENT_TRY);
parser_stack_iterator_init (context_p, &context_p->last_statement);
lexer_next_token (context_p);
continue;
}
case LEXER_KEYW_DEFAULT:
{
parser_parse_default_statement (context_p);
continue;
}
case LEXER_KEYW_CASE:
{
parser_parse_case_statement (context_p);
continue;
}
case LEXER_KEYW_BREAK:
{
parser_parse_break_statement (context_p);
break;
}
case LEXER_KEYW_CONTINUE:
{
parser_parse_continue_statement (context_p);
break;
}
case LEXER_KEYW_THROW:
{
lexer_next_token (context_p);
if (context_p->token.flags & LEXER_WAS_NEWLINE)
{
parser_raise_error (context_p, PARSER_ERR_EXPRESSION_EXPECTED);
}
parser_parse_expression (context_p, PARSE_EXPR);
parser_emit_cbc (context_p, CBC_THROW);
break;
}
case LEXER_KEYW_RETURN:
{
if (!(context_p->status_flags & PARSER_IS_FUNCTION))
{
parser_raise_error (context_p, PARSER_ERR_INVALID_RETURN);
}
lexer_next_token (context_p);
if ((context_p->token.flags & LEXER_WAS_NEWLINE)
|| context_p->token.type == LEXER_SEMICOLON
|| context_p->token.type == LEXER_RIGHT_BRACE)
{
#if ENABLED (JERRY_ES2015_CLASS)
if (JERRY_UNLIKELY (PARSER_IS_CLASS_CONSTRUCTOR_SUPER (context_p->status_flags)))
{
if (context_p->status_flags & PARSER_CLASS_IMPLICIT_SUPER)
{
parser_emit_cbc (context_p, CBC_PUSH_THIS);
}
else
{
parser_emit_cbc_ext (context_p, CBC_EXT_PUSH_CONSTRUCTOR_THIS);
}
parser_emit_cbc (context_p, CBC_RETURN);
}
else
{
#endif /* ENABLED (JERRY_ES2015_CLASS) */
parser_emit_cbc (context_p, CBC_RETURN_WITH_BLOCK);
#if ENABLED (JERRY_ES2015_CLASS)
}
#endif /* ENABLED (JERRY_ES2015_CLASS) */
break;
}
parser_parse_expression (context_p, PARSE_EXPR);
bool return_with_literal = (context_p->last_cbc_opcode == CBC_PUSH_LITERAL);
#if ENABLED (JERRY_ES2015_CLASS)
return_with_literal = return_with_literal && !PARSER_IS_CLASS_CONSTRUCTOR_SUPER (context_p->status_flags);
#endif /* ENABLED (JERRY_ES2015_CLASS) */
if (return_with_literal)
{
context_p->last_cbc_opcode = CBC_RETURN_WITH_LITERAL;
}
else
{
#if ENABLED (JERRY_ES2015_CLASS)
if (JERRY_UNLIKELY (PARSER_IS_CLASS_CONSTRUCTOR_SUPER (context_p->status_flags)))
{
parser_emit_cbc_ext (context_p, CBC_EXT_CONSTRUCTOR_RETURN);
}
else
{
#endif /* ENABLED (JERRY_ES2015_CLASS) */
parser_emit_cbc (context_p, CBC_RETURN);
#if ENABLED (JERRY_ES2015_CLASS)
}
#endif /* ENABLED (JERRY_ES2015_CLASS) */
}
break;
}
case LEXER_KEYW_DEBUGGER:
{
#ifdef JERRY_DEBUGGER
/* This breakpoint location is not reported to the
* debugger, so it is impossible to disable it. */
if (JERRY_CONTEXT (debugger_flags) & JERRY_DEBUGGER_CONNECTED)
{
parser_emit_cbc (context_p, CBC_BREAKPOINT_ENABLED);
}
#endif /* JERRY_DEBUGGER */
lexer_next_token (context_p);
break;
}
case LEXER_LITERAL:
{
if (context_p->token.lit_location.type == LEXER_IDENT_LITERAL
&& lexer_check_next_character (context_p, LIT_CHAR_COLON))
{
parser_parse_label (context_p);
lexer_next_token (context_p);
JERRY_ASSERT (context_p->token.type == LEXER_COLON);
lexer_next_token (context_p);
continue;
}
/* FALLTHRU */
}
default:
{
int options = PARSE_EXPR_BLOCK;
if (context_p->status_flags & PARSER_IS_FUNCTION)
{
options = PARSE_EXPR_STATEMENT;
}
if (context_p->token.type == LEXER_EXPRESSION_START)
{
/* Restore the token type form the extra_value. */
context_p->token.type = context_p->token.extra_value;
options |= PARSE_EXPR_HAS_LITERAL;
}
parser_parse_expression (context_p, options);
break;
}
}
parser_flush_cbc (context_p);
if (context_p->token.type == LEXER_RIGHT_BRACE)
{
if (context_p->stack_top_uint8 == PARSER_STATEMENT_BLOCK)
{
parser_stack_pop_uint8 (context_p);
parser_stack_iterator_init (context_p, &context_p->last_statement);
lexer_next_token (context_p);
}
else if (context_p->stack_top_uint8 == PARSER_STATEMENT_SWITCH
|| context_p->stack_top_uint8 == PARSER_STATEMENT_SWITCH_NO_DEFAULT)
{
int has_default = (context_p->stack_top_uint8 == PARSER_STATEMENT_SWITCH);
parser_loop_statement_t loop;
parser_switch_statement_t switch_statement;
parser_stack_pop_uint8 (context_p);
parser_stack_pop (context_p, &loop, sizeof (parser_loop_statement_t));
parser_stack_pop (context_p, &switch_statement, sizeof (parser_switch_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
JERRY_ASSERT (switch_statement.branch_list_p == NULL);
if (!has_default)
{
parser_set_branch_to_current_position (context_p, &switch_statement.default_branch);
}
parser_set_breaks_to_current_position (context_p, loop.branch_list_p);
lexer_next_token (context_p);
}
else if (context_p->stack_top_uint8 == PARSER_STATEMENT_TRY)
{
parser_parse_try_statement_end (context_p);
}
else if (context_p->stack_top_uint8 == PARSER_STATEMENT_START)
{
if (context_p->status_flags & PARSER_IS_CLOSURE)
{
parser_stack_pop_uint8 (context_p);
context_p->last_statement.current_p = NULL;
JERRY_ASSERT (context_p->stack_depth == 0);
#ifndef JERRY_NDEBUG
JERRY_ASSERT (context_p->context_stack_depth == 0);
#endif /* !JERRY_NDEBUG */
/* There is no lexer_next_token here, since the
* next token belongs to the parent context. */
#if ENABLED (JERRY_ES2015_CLASS)
if (JERRY_UNLIKELY (PARSER_IS_CLASS_CONSTRUCTOR_SUPER (context_p->status_flags)))
{
if (context_p->status_flags & PARSER_CLASS_IMPLICIT_SUPER)
{
parser_emit_cbc (context_p, CBC_PUSH_THIS);
}
else
{
parser_emit_cbc_ext (context_p, CBC_EXT_PUSH_CONSTRUCTOR_THIS);
}
parser_emit_cbc (context_p, CBC_RETURN);
parser_flush_cbc (context_p);
}
#endif /* ENABLED (JERRY_ES2015_CLASS) */
return;
}
parser_raise_error (context_p, PARSER_ERR_INVALID_RIGHT_SQUARE);
}
}
else if (context_p->token.type == LEXER_SEMICOLON)
{
lexer_next_token (context_p);
}
else if (context_p->token.type != LEXER_EOS
&& !(context_p->token.flags & LEXER_WAS_NEWLINE))
{
parser_raise_error (context_p, PARSER_ERR_SEMICOLON_EXPECTED);
}
while (true)
{
switch (context_p->stack_top_uint8)
{
case PARSER_STATEMENT_LABEL:
{
parser_label_statement_t label;
parser_stack_pop_uint8 (context_p);
parser_stack_pop (context_p, &label, sizeof (parser_label_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
parser_set_breaks_to_current_position (context_p, label.break_list_p);
continue;
}
case PARSER_STATEMENT_IF:
{
if (parser_parse_if_statement_end (context_p))
{
break;
}
continue;
}
case PARSER_STATEMENT_ELSE:
{
parser_if_else_statement_t else_statement;
parser_stack_pop_uint8 (context_p);
parser_stack_pop (context_p, &else_statement, sizeof (parser_if_else_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
parser_set_branch_to_current_position (context_p, &else_statement.branch);
continue;
}
case PARSER_STATEMENT_DO_WHILE:
{
parser_parse_do_while_statement_end (context_p);
if (context_p->token.type == LEXER_SEMICOLON)
{
lexer_next_token (context_p);
}
continue;
}
case PARSER_STATEMENT_WHILE:
{
parser_parse_while_statement_end (context_p);
continue;
}
case PARSER_STATEMENT_FOR:
{
parser_parse_for_statement_end (context_p);
continue;
}
case PARSER_STATEMENT_FOR_IN:
{
parser_for_in_statement_t for_in_statement;
parser_loop_statement_t loop;
parser_stack_pop_uint8 (context_p);
parser_stack_pop (context_p, &loop, sizeof (parser_loop_statement_t));
parser_stack_pop (context_p, &for_in_statement, sizeof (parser_for_in_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
parser_set_continues_to_current_position (context_p, loop.branch_list_p);
parser_flush_cbc (context_p);
PARSER_MINUS_EQUAL_U16 (context_p->stack_depth, PARSER_FOR_IN_CONTEXT_STACK_ALLOCATION);
#ifndef JERRY_NDEBUG
PARSER_MINUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_FOR_IN_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
parser_emit_cbc_ext_backward_branch (context_p,
CBC_EXT_BRANCH_IF_FOR_IN_HAS_NEXT,
for_in_statement.start_offset);
parser_set_breaks_to_current_position (context_p, loop.branch_list_p);
parser_set_branch_to_current_position (context_p, &for_in_statement.branch);
continue;
}
#if ENABLED (JERRY_ES2015_FOR_OF)
case PARSER_STATEMENT_FOR_OF:
{
parser_for_of_statement_t for_of_statement;
parser_loop_statement_t loop;
parser_stack_pop_uint8 (context_p);
parser_stack_pop (context_p, &loop, sizeof (parser_loop_statement_t));
parser_stack_pop (context_p, &for_of_statement, sizeof (parser_for_of_statement_t));
parser_stack_iterator_init (context_p, &context_p->last_statement);
parser_set_continues_to_current_position (context_p, loop.branch_list_p);
parser_flush_cbc (context_p);
PARSER_MINUS_EQUAL_U16 (context_p->stack_depth, PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION);
#ifndef JERRY_NDEBUG
PARSER_MINUS_EQUAL_U16 (context_p->context_stack_depth, PARSER_FOR_OF_CONTEXT_STACK_ALLOCATION);
#endif /* !JERRY_NDEBUG */
parser_emit_cbc_ext_backward_branch (context_p,
CBC_EXT_BRANCH_IF_FOR_OF_HAS_NEXT,
for_of_statement.start_offset);
parser_set_breaks_to_current_position (context_p, loop.branch_list_p);
parser_set_branch_to_current_position (context_p, &for_of_statement.branch);
continue;
}
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
case PARSER_STATEMENT_WITH:
{
parser_parse_with_statement_end (context_p);
continue;
}
default:
{
break;
}
}
break;
}
}
JERRY_ASSERT (context_p->stack_depth == 0);
#ifndef JERRY_NDEBUG
JERRY_ASSERT (context_p->context_stack_depth == 0);
#endif /* !JERRY_NDEBUG */
parser_stack_pop_uint8 (context_p);
context_p->last_statement.current_p = NULL;
if (context_p->status_flags & PARSER_IS_CLOSURE)
{
parser_raise_error (context_p, PARSER_ERR_STATEMENT_EXPECTED);
}
} /* parser_parse_statements */
/**
* Free jumps stored on the stack if a parse error is occured.
*/
void JERRY_ATTR_NOINLINE
parser_free_jumps (parser_stack_iterator_t iterator) /**< iterator position */
{
while (true)
{
uint8_t type = parser_stack_iterator_read_uint8 (&iterator);
parser_branch_node_t *branch_list_p = NULL;
switch (type)
{
case PARSER_STATEMENT_START:
{
return;
}
case PARSER_STATEMENT_LABEL:
{
parser_label_statement_t label;
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &label, sizeof (parser_label_statement_t));
parser_stack_iterator_skip (&iterator, sizeof (parser_label_statement_t));
branch_list_p = label.break_list_p;
break;
}
case PARSER_STATEMENT_SWITCH:
case PARSER_STATEMENT_SWITCH_NO_DEFAULT:
{
parser_switch_statement_t switch_statement;
parser_loop_statement_t loop;
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &loop, sizeof (parser_loop_statement_t));
parser_stack_iterator_skip (&iterator, sizeof (parser_loop_statement_t));
parser_stack_iterator_read (&iterator, &switch_statement, sizeof (parser_switch_statement_t));
parser_stack_iterator_skip (&iterator, sizeof (parser_switch_statement_t));
branch_list_p = switch_statement.branch_list_p;
while (branch_list_p != NULL)
{
parser_branch_node_t *next_p = branch_list_p->next_p;
parser_free (branch_list_p, sizeof (parser_branch_node_t));
branch_list_p = next_p;
}
branch_list_p = loop.branch_list_p;
break;
}
case PARSER_STATEMENT_DO_WHILE:
case PARSER_STATEMENT_WHILE:
case PARSER_STATEMENT_FOR:
case PARSER_STATEMENT_FOR_IN:
#if ENABLED (JERRY_ES2015_FOR_OF)
case PARSER_STATEMENT_FOR_OF:
#endif /* ENABLED (JERRY_ES2015_FOR_OF) */
{
parser_loop_statement_t loop;
parser_stack_iterator_skip (&iterator, 1);
parser_stack_iterator_read (&iterator, &loop, sizeof (parser_loop_statement_t));
parser_stack_iterator_skip (&iterator, parser_statement_length (type) - 1);
branch_list_p = loop.branch_list_p;
break;
}
default:
{
parser_stack_iterator_skip (&iterator, parser_statement_length (type));
continue;
}
}
while (branch_list_p != NULL)
{
parser_branch_node_t *next_p = branch_list_p->next_p;
parser_free (branch_list_p, sizeof (parser_branch_node_t));
branch_list_p = next_p;
}
}
} /* parser_free_jumps */
/**
* @}
* @}
* @}
*/
#endif /* ENABLED (JERRY_PARSER) */
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