init

2026-04-07 13:35:22 +08:00
commit 0120fa9ce3
1530 changed files with 424864 additions and 0 deletions
--- a/pg_include/parser/gramparse.h
+++ b/pg_include/parser/gramparse.h
@@ -0,0 +1,146 @@
+// /*-------------------------------------------------------------------------
+//  *
+//  * gramparse.h
+//  *		Shared definitions for the "raw" parser (flex and bison phases only)
+//  *
+//  * NOTE: this file is only meant to be included in the core parsing files,
+//  * ie, parser.c, gram.y, scan.l, and keywords.c.  Definitions that are needed
+//  * outside the core parser should be in parser.h.
+//  *
+//  *
+//  * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+//  * Portions Copyright (c) 1994, Regents of the University of California
+//  *
+//  * src/include/parser/gramparse.h
+//  *
+//  *-------------------------------------------------------------------------
+//  */
+
+// #ifndef GRAMPARSE_H
+// #define GRAMPARSE_H
+
+// #include "nodes/parsenodes.h"
+// #include "parser/scanner.h"
+
+// /*
+//  * NB: include gram.h only AFTER including scanner.h, because scanner.h
+//  * is what #defines YYLTYPE.
+//  */
+// #include "parser/gram.h"
+
+// /*
+//  * The YY_EXTRA data that a flex scanner allows us to pass around.	Private
+//  * state needed for raw parsing/lexing goes here.
+//  */
+// typedef struct base_yy_extra_type
+// {
+// 	/*
+// 	 * Fields used by the core scanner.
+// 	 */
+// 	core_yy_extra_type core_yy_extra;
+
+// 	/*
+// 	 * State variables for base_yylex().
+// 	 */
+// 	bool		have_lookahead; /* is lookahead info valid? */
+// 	int			lookahead_token;	/* one-token lookahead */
+// 	core_YYSTYPE lookahead_yylval;		/* yylval for lookahead token */
+// 	YYLTYPE		lookahead_yylloc;		/* yylloc for lookahead token */
+
+// 	/*
+// 	 * State variables that belong to the grammar.
+// 	 */
+// 	List	   *parsetree;		/* final parse result is delivered here */
+// } base_yy_extra_type;
+
+// /*
+//  * In principle we should use yyget_extra() to fetch the yyextra field
+//  * from a yyscanner struct.  However, flex always puts that field first,
+//  * and this is sufficiently performance-critical to make it seem worth
+//  * cheating a bit to use an inline macro.
+//  */
+// #define pg_yyget_extra(yyscanner) (*((base_yy_extra_type **) (yyscanner)))
+
+
+// /* from parser.c */
+// extern int base_yylex(YYSTYPE *lvalp, YYLTYPE *llocp,
+// 		   core_yyscan_t yyscanner);
+
+// /* from gram.y */
+// extern void parser_init(base_yy_extra_type *yyext);
+// extern int	base_yyparse(core_yyscan_t yyscanner);
+
+// #endif   /* GRAMPARSE_H */
+/*-------------------------------------------------------------------------
+ *
+ * gramparse.h
+ *		Shared definitions for the "raw" parser (flex and bison phases only)
+ *
+ * NOTE: this file is only meant to be included in the core parsing files,
+ * ie, parser.c, gram.y, scan.l, and keywords.c.  Definitions that are needed
+ * outside the core parser should be in parser.h.
+ *
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/gramparse.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef GRAMPARSE_H
+#define GRAMPARSE_H
+
+#include "nodes/parsenodes.h"
+#include "parser/scanner.h"
+
+/*
+ * NB: include gram.h only AFTER including scanner.h, because scanner.h
+ * is what #defines YYLTYPE.
+ */
+#include "parser/gram.h"
+
+/*
+ * The YY_EXTRA data that a flex scanner allows us to pass around.  Private
+ * state needed for raw parsing/lexing goes here.
+ */
+typedef struct base_yy_extra_type
+{
+	/*
+	 * Fields used by the core scanner.
+	 */
+	core_yy_extra_type core_yy_extra;
+
+	/*
+	 * State variables for base_yylex().
+	 */
+	bool		have_lookahead; /* is lookahead info valid? */
+	int			lookahead_token;	/* one-token lookahead */
+	core_YYSTYPE lookahead_yylval;		/* yylval for lookahead token */
+	YYLTYPE		lookahead_yylloc;		/* yylloc for lookahead token */
+
+	/*
+	 * State variables that belong to the grammar.
+	 */
+	List	   *parsetree;		/* final parse result is delivered here */
+} base_yy_extra_type;
+
+/*
+ * In principle we should use yyget_extra() to fetch the yyextra field
+ * from a yyscanner struct.  However, flex always puts that field first,
+ * and this is sufficiently performance-critical to make it seem worth
+ * cheating a bit to use an inline macro.
+ */
+#define pg_yyget_extra(yyscanner) (*((base_yy_extra_type **) (yyscanner)))
+
+
+/* from parser.c */
+extern int base_yylex(YYSTYPE *lvalp, YYLTYPE *llocp,
+		   core_yyscan_t yyscanner);
+
+/* from gram.y */
+extern void parser_init(base_yy_extra_type *yyext);
+extern int	base_yyparse(core_yyscan_t yyscanner);
+
+#endif   /* GRAMPARSE_H */