tools/lexer_generator/rule_parser.py - Issue 62223002: Experimental lexer generator: transfer actions across epsilon transitions correctly when constructi…

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Unified Diff: tools/lexer_generator/rule_parser.py

Issue 62223002: Experimental lexer generator: transfer actions across epsilon transitions correctly when constructi… (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/parser

Patch Set: code review (dcarney) Created 7 years, 1 month ago

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Index: tools/lexer_generator/rule_parser.py

diff --git a/tools/lexer_generator/rule_parser.py b/tools/lexer_generator/rule_parser.py

index 215e06df62cb84179ecf807d4990ca804db6e46d..9dc0b4e9672f14e89e71e797c3c075c80e517361 100644

--- a/tools/lexer_generator/rule_parser.py

+++ b/tools/lexer_generator/rule_parser.py

@@ -47,6 +47,7 @@ class RuleParserState:

class RuleParser:

tokens = RuleLexer.tokens

+ __rule_precedence_counter = 0

def __init__(self):

self.__state = None

@@ -95,7 +96,8 @@ class RuleParser:

| composite_regex_or_default empty action

| composite_regex_or_default code empty'''

rules = self.__state.rules[self.__state.current_state]

- rule = (p[1], p[2], p[3])

+ rule = (p[1], RuleParser.__rule_precedence_counter, p[2], p[3])

+ RuleParser.__rule_precedence_counter += 1

if p[1] == 'default':

assert not rules['default']

rules['default'] = rule

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