Initial commit

1 files changed, 29 insertions, 0 deletions

diff --git a/src/journal_lib/parse/parsewrapper.py b/src/journal_lib/parse/parsewrapper.py
new file mode 100644
index 0000000..c75b32c
--- /dev/null
+++ b/src/journal_lib/parse/parsewrapper.py
@@ -0,0 +1,29 @@
+from .ply import yacc
+
+class ParseWrapper(object):
+
+    def __init__(self, tokens = None, debug: bool = False):
+        if tokens is not None:
+            self.tokens = tokens
+        self.debug = debug
+        self.build(debug=debug)
+
+    def build(self, **kwargs):
+        self.parser = yacc.yacc(module=self, **kwargs)
+
+    def parse(self, *args, **kwargs):
+        return self.parser.parse(*args, **kwargs)
+
+    def _hl_token(self, p):
+        try:
+            linestart = p.lexer.lexdata.rfind("\n", 0, p.lexpos) + 1
+            lineend = p.lexer.lexdata.find("\n", p.lexpos)
+            markpos = p.lexpos - linestart
+            marklen = len(str(p.value))
+            lineno = p.lexer.lexdata[0:linestart+1].count("\n")
+            print(f"Syntax error at '{p.value}' on line {lineno}, position {markpos}")
+            print(f"    {p.lexer.lexdata[linestart:lineend]}")
+            print(f"    {' ' * markpos}{'^' * marklen}")
+        except Exception as e:
+            print(f"An error occured when showing the position of token {p}\n{e}")
+