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Diffstat (limited to 'src/backend/parser/analyze.c')
-rw-r--r--src/backend/parser/analyze.c90
1 files changed, 5 insertions, 85 deletions
diff --git a/src/backend/parser/analyze.c b/src/backend/parser/analyze.c
index a16fdd65601..34f7c17f576 100644
--- a/src/backend/parser/analyze.c
+++ b/src/backend/parser/analyze.c
@@ -239,102 +239,23 @@ parse_sub_analyze(Node *parseTree, ParseState *parentParseState,
}
/*
- * setQueryLocationAndLength
- * Set query's location and length from statement and ParseState
- *
- * Some statements, like PreparableStmt, can be located within parentheses.
- * For example "(SELECT 1)" or "COPY (UPDATE ...) to x;". For those, we
- * cannot use the whole string from the statement's location or the SQL
- * string would yield incorrectly. The parser will set stmt_len, reflecting
- * the size of the statement within the parentheses. Thus, when stmt_len is
- * available, we need to use it for the Query's stmt_len.
- *
- * For other cases, the parser can't provide the length of individual
- * statements. However, we have the statement's location plus the length
- * (p_stmt_len) and location (p_stmt_location) of the top level RawStmt,
- * stored in pstate. Thus, the statement's length is the RawStmt's length
- * minus how much we've advanced in the RawStmt's string. If p_stmt_len
- * is 0, the SQL string is used up to its end.
- */
-static void
-setQueryLocationAndLength(ParseState *pstate, Query *qry, Node *parseTree)
-{
- ParseLoc stmt_len = 0;
-
- switch (nodeTag(parseTree))
- {
- case T_InsertStmt:
- qry->stmt_location = ((InsertStmt *) parseTree)->stmt_location;
- stmt_len = ((InsertStmt *) parseTree)->stmt_len;
- break;
-
- case T_DeleteStmt:
- qry->stmt_location = ((DeleteStmt *) parseTree)->stmt_location;
- stmt_len = ((DeleteStmt *) parseTree)->stmt_len;
- break;
-
- case T_UpdateStmt:
- qry->stmt_location = ((UpdateStmt *) parseTree)->stmt_location;
- stmt_len = ((UpdateStmt *) parseTree)->stmt_len;
- break;
-
- case T_MergeStmt:
- qry->stmt_location = ((MergeStmt *) parseTree)->stmt_location;
- stmt_len = ((MergeStmt *) parseTree)->stmt_len;
- break;
-
- case T_SelectStmt:
- qry->stmt_location = ((SelectStmt *) parseTree)->stmt_location;
- stmt_len = ((SelectStmt *) parseTree)->stmt_len;
- break;
-
- case T_PLAssignStmt:
- qry->stmt_location = ((PLAssignStmt *) parseTree)->location;
- break;
-
- default:
- qry->stmt_location = pstate->p_stmt_location;
- break;
- }
-
- if (stmt_len > 0)
- {
- /* Statement's length is known, use it */
- qry->stmt_len = stmt_len;
- }
- else if (pstate->p_stmt_len > 0)
- {
- /*
- * The top RawStmt's length is known, so calculate the statement's
- * length from the statement's location and the RawStmt's length and
- * location.
- */
- qry->stmt_len = pstate->p_stmt_len - (qry->stmt_location - pstate->p_stmt_location);
- }
-
- /* The calculated statement length should be calculated as positive. */
- Assert(qry->stmt_len >= 0);
-}
-
-/*
* transformTopLevelStmt -
* transform a Parse tree into a Query tree.
*
- * This function is just responsible for storing location data
- * from the RawStmt into the ParseState.
+ * This function is just responsible for transferring statement location data
+ * from the RawStmt into the finished Query.
*/
Query *
transformTopLevelStmt(ParseState *pstate, RawStmt *parseTree)
{
Query *result;
- /* Store RawStmt's length and location in pstate */
- pstate->p_stmt_len = parseTree->stmt_len;
- pstate->p_stmt_location = parseTree->stmt_location;
-
/* We're at top level, so allow SELECT INTO */
result = transformOptionalSelectInto(pstate, parseTree->stmt);
+ result->stmt_location = parseTree->stmt_location;
+ result->stmt_len = parseTree->stmt_len;
+
return result;
}
@@ -503,7 +424,6 @@ transformStmt(ParseState *pstate, Node *parseTree)
/* Mark as original query until we learn differently */
result->querySource = QSRC_ORIGINAL;
result->canSetTag = true;
- setQueryLocationAndLength(pstate, result, parseTree);
return result;
}