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Create function variables using the data produced by the pre-scanner. (#3199)

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The pre-scanner now is able to track all variable declarations and produces a compressed
stream which store this data for each function and catch block. When a function or
catch block is parsed, this information is decoded and the appropriate variables are
created. Furthermore a stack scope is created which contains the currently available
local variables and their register or literal index.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
This commit is contained in:
Zoltan Herczeg
2019-10-17 15:20:04 +02:00
committed by GitHub
parent fd1f7eab9f
commit 7df87b7778
20 changed files with 2098 additions and 1219 deletions
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jerry-core/parser/js/js-parser-limits.h
+27 -13
View File
@@ -52,22 +52,30 @@
#define PARSER_MAXIMUM_STRING_LENGTH PARSER_MAXIMUM_STRING_LIMIT
#endif /* !PARSER_MAXIMUM_STRING_LENGTH */
/**
* Maximum number of literals.
* Limit: 32767. Recommended: 510, 32767
*/
#ifndef PARSER_MAXIMUM_NUMBER_OF_LITERALS
#define PARSER_MAXIMUM_NUMBER_OF_LITERALS 32767
#endif /* !PARSER_MAXIMUM_NUMBER_OF_LITERALS */
/**
* Maximum number of registers.
* Limit: PARSER_MAXIMUM_NUMBER_OF_LITERALS
* Limit: min: 256, max: PARSER_MAXIMUM_NUMBER_OF_LITERALS / 2
*/
#ifndef PARSER_MAXIMUM_NUMBER_OF_REGISTERS
#define PARSER_MAXIMUM_NUMBER_OF_REGISTERS 256
#endif /* !PARSER_MAXIMUM_NUMBER_OF_REGISTERS */
/**
* Maximum number of literals.
* Limit: 32767 - PARSER_MAXIMUM_NUMBER_OF_REGISTERS. Recommended: 32767 - PARSER_MAXIMUM_NUMBER_OF_REGISTERS.
*/
#ifndef PARSER_MAXIMUM_NUMBER_OF_LITERALS
#define PARSER_MAXIMUM_NUMBER_OF_LITERALS (32767 - PARSER_MAXIMUM_NUMBER_OF_REGISTERS)
#endif /* !PARSER_MAXIMUM_NUMBER_OF_LITERALS */
/**
* Maximum depth of scope stack.
* Limit: 32767. Recommended: 32767
*/
#ifndef PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK
#define PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK 32767
#endif /* !PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK */
/**
* Maximum code size.
* Limit: 16777215. Recommended: 65535, 16777215.
@@ -95,13 +103,19 @@
#error "Maximum identifier length is not within range."
#endif /* (PARSER_MAXIMUM_IDENT_LENGTH < 1) || (PARSER_MAXIMUM_IDENT_LENGTH > PARSER_MAXIMUM_STRING_LENGTH) */
#if (PARSER_MAXIMUM_NUMBER_OF_LITERALS < 1) || (PARSER_MAXIMUM_NUMBER_OF_LITERALS > 32767)
#if ((PARSER_MAXIMUM_NUMBER_OF_LITERALS < 1) \
|| (PARSER_MAXIMUM_NUMBER_OF_LITERALS + PARSER_MAXIMUM_NUMBER_OF_REGISTERS > 32767))
#error "Maximum number of literals is not within range."
#endif /* (PARSER_MAXIMUM_NUMBER_OF_LITERALS < 1) || (PARSER_MAXIMUM_NUMBER_OF_LITERALS > 32767) */
#endif /* ((PARSER_MAXIMUM_NUMBER_OF_LITERALS < 1) \
|| (PARSER_MAXIMUM_NUMBER_OF_LITERALS > 32767)) */
#if (PARSER_MAXIMUM_NUMBER_OF_REGISTERS > PARSER_MAXIMUM_NUMBER_OF_LITERALS)
#if (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK < 1) || (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK > 32767)
#error "Maximum depth of scope stack is not within range."
#endif /* (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK < 1) || (PARSER_MAXIMUM_DEPTH_OF_SCOPE_STACK > 32767) */
#if ((PARSER_MAXIMUM_NUMBER_OF_REGISTERS * 2) > PARSER_MAXIMUM_NUMBER_OF_LITERALS)
#error "Maximum number of registers is not within range."
#endif /* (PARSER_MAXIMUM_NUMBER_OF_REGISTERS > PARSER_MAXIMUM_NUMBER_OF_LITERALS) */
#endif /* ((PARSER_MAXIMUM_NUMBER_OF_REGISTERS * 2) > PARSER_MAXIMUM_NUMBER_OF_LITERALS) */
#if (PARSER_MAXIMUM_CODE_SIZE < 4096) || (PARSER_MAXIMUM_CODE_SIZE > 16777215)
#error "Maximum code size is not within range."