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Introduce parser scope types, add scope flags, indicating whether scope contains a function declaration, a 'try' statement, 'with' statement or 'delete' operator.

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JerryScript-DCO-1.0-Signed-off-by: Ruben Ayrapetyan r.ayrapetyan@samsung.com
This commit is contained in:
Ruben Ayrapetyan
2015-08-21 14:09:24 +03:00
parent c3d8cfd73c
commit 91aecc3bd0
5 changed files with 127 additions and 43 deletions
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jerry-core/parser/js/scopes-tree.h
+27 -3
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@@ -39,6 +39,16 @@ typedef struct tree_header
uint8_t children_num;
} tree_header;
/**
* Scope type
*/
typedef enum
{
SCOPE_TYPE_GLOBAL, /**< the Global code scope */
SCOPE_TYPE_FUNCTION, /**< a function code scope */
SCOPE_TYPE_EVAL /**< an eval code scope */
} scope_type_t;
/**
* Structure for holding scope information during parsing
*/
@@ -49,14 +59,24 @@ typedef struct
vm_instr_counter_t instrs_count; /**< count of instructions */
linked_list var_decls; /**< instructions for variable declarations */
uint8_t var_decls_cout; /**< number of instructions for variable declarations */
scope_type_t type : 2; /**< scope type */
bool strict_mode: 1; /**< flag, indicating that scope's code should be executed in strict mode */
bool ref_arguments: 1; /**< flag, indicating that "arguments" variable is used inside the scope */
bool ref_eval: 1; /**< flag, indicating that "eval" is used inside the scope */
bool ref_arguments: 1; /**< flag, indicating that "arguments" variable is used inside the scope
* (not depends on subscopes) */
bool ref_eval: 1; /**< flag, indicating that "eval" is used inside the scope
* (not depends on subscopes) */
bool contains_with: 1; /**< flag, indicationg whether 'with' statement is contained in the scope
* (not depends on subscopes) */
bool contains_try: 1; /**< flag, indicationg whether 'try' statement is contained in the scope
* (not depends on subscopes) */
bool contains_delete: 1; /**< flag, indicationg whether 'delete' operator is contained in the scope
* (not depends on subscopes) */
bool contains_functions: 1; /**< flag, indicating that the scope contains a function declaration / expression */
} scopes_tree_int;
typedef scopes_tree_int * scopes_tree;
scopes_tree scopes_tree_init (scopes_tree);
scopes_tree scopes_tree_init (scopes_tree, scope_type_t);
void scopes_tree_free (scopes_tree);
vm_instr_counter_t scopes_tree_instrs_num (scopes_tree);
vm_instr_counter_t scopes_tree_var_decls_num (scopes_tree);
@@ -72,6 +92,10 @@ vm_instr_t *scopes_tree_raw_data (scopes_tree, uint8_t *, size_t, lit_id_hash_ta
void scopes_tree_set_strict_mode (scopes_tree, bool);
void scopes_tree_set_arguments_used (scopes_tree);
void scopes_tree_set_eval_used (scopes_tree);
void scopes_tree_set_contains_with (scopes_tree);
void scopes_tree_set_contains_try (scopes_tree);
void scopes_tree_set_contains_delete (scopes_tree);
void scopes_tree_set_contains_functions (scopes_tree);
bool scopes_tree_strict_mode (scopes_tree);
#endif /* SCOPES_TREE_H */