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Substantially extended the SQL subset parsed.

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This commit is contained in:
Simon Brooke 2018-02-15 19:05:34 +00:00
parent 1b990183b3
commit 5bb61664a7
2 changed files with 32 additions and 13 deletions
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41
src/squirrel_parse/parser.clj
View file

@ -34,8 +34,8 @@
1. Add further Postrgresql keywords, or
2. Start a new def for non-postgresql keywords."
["action" "add" "admin" "all" "alter" "as" "by" "cache" "cascade" "collate" "column" "comment" "connection" "constraint" "create"
"cycle" "data" "day" "default" "delete" "encrypted" "exists" "extension" "false" "foreign" "from" "full"
"go" "grant" "group" "hour" "if" "increment" "insert" "in" "into" "key" "limit" "match" "maxvalue" "minute" "minvalue"
"cycle" "data" "day" "default" "delete" "drop" "encrypted" "exists" "extension" "false" "foreign" "from" "full"
"go" "grant" "group" "hour" "if" "increment" "index" "insert" "in" "into" "key" "limit" "match" "maxvalue" "minute" "minvalue"
"month" "no" "none" "not" "null" "off" "on" "only" "owned" "owner" "partial" "password" "primary"
"references" "rename" "restrict" "revoke" "role" "schema" "second" "select" "sequence" "set"
"simple" "start" "sysid" "table" "temp" "temporary" "time" "to" "true" "type" "unique"
@ -66,7 +66,7 @@
(def simple-datatypes
"(Postgresql) datatypes which take no arguments or special syntax"
["bigint" "bigserial" "bit" "boolean" "bytea" "date" "double precision" "float" "integer" "money" "numeric" "real" "serial" "text" ])
["bigint" "bigserial" "bit" "boolean" "bytea" "date" "double precision" "float" "int" "integer" "money" "numeric" "real" "serial" "text" ])
(def with-integer-parameter-datatypes
"(Postgresql) datatypes which take a single integer parameter, typically the storage size"
@ -111,9 +111,21 @@
strings. Order is not very significant, but instaparse treats the first rule as special."
(list
"STATEMENTS := OPT-SPACE STATEMENT + ;"
"STATEMENT := TABLE-DECL | ALTER-STMT | SET-STMT | COMMENT | EXTENSION-DECL | SEQUENCE-DECL | ROLE-DECL | INSERT-STMT | PERMISSIONS-STMT;"
"STATEMENT := TABLE-DECL |
ALTER-STMT |
SET-STMT |
COMMENT |
DROP-STMT |
EXTENSION-DECL |
SEQUENCE-DECL |
ROLE-DECL |
INSERT-STMT |
PERMISSIONS-STMT;"
"ALTER-STMT := ALTER-TABLE | ALTER-SEQUENCE ;"
"DROP-STMT := KW-DROP OBJ-TYPE EXISTENCE QUAL-NAME TERMINATOR ;"
"OBJ-TYPE := KW-TABLE | KW-INDEX ;"
"SET-STMT := KW-SET NAME EQUALS EXPRESSION TERMINATOR ;"
"EXTENSION-DECL := KW-CREATE KW-EXTENSION EXISTENCE NAME KW-WITH KW-SCHEMA NAME TERMINATOR ;"
@ -145,10 +157,13 @@
;; taken from https://www.postgresql.org/docs/10/static/sql-createtable.html
;; but by no means all of that is implemented.
"TABLE-DECL := KW-CREATE PERMANENCE KW-TABLE EXISTENCE NAME LPAR TABLE-SPEC-ELEMENTS RPAR TERMINATOR ;"
"TABLE-SPEC-ELEMENTS := TABLE-SPEC-ELEMENT +; "
"TABLE-SPEC-ELEMENTS := TABLE-SPEC-ELT-COMMA * TABLE-SPEC-ELEMENT OPT-COMMA; "
"TABLE-SPEC-ELT-COMMA := TABLE-SPEC-ELEMENT COMMA ;"
"TABLE-SPEC-ELEMENT := COLUMN-SPEC | TABLE-CONSTRAINT ;"
"COLUMN-SPEC := NAME SPACE DATATYPE COLUMN-CONSTRAINTS OPT-COMMA;"
"TABLE-CONSTRAINT := 'TODO' OPT-COMMA ;"
"COLUMN-SPEC := NAME SPACE DATATYPE COLUMN-CONSTRAINTS ;"
"TABLE-CONSTRAINT := KW-CONSTRAINT NAME TC-ELEMENT ;"
"TC-ELEMENT := TC-ELT-FK ;" ;; OR OTHERS...
"TC-ELT-FK := REFERENCES-CC ;"
"COLUMN-CONSTRAINTS := COLUMN-CONSTRAINT * ;"
"COLUMN-CONSTRAINT := KW-CONSTRAINT NAME COLUMN-CONSTRAINT | NOT-NULL-CC | NULL-CC | DEFAULT-CC | UNIQUE-CC | PRIMARY-CC | REFERENCES-CC ;"
"NOT-NULL-CC := KW-NOT KW-NULL ;"
@ -156,14 +171,14 @@
"DEFAULT-CC := KW-DEFAULT EXPRESSION ;"
"UNIQUE-CC := KW-UNIQUE INDEX-PARAMS ;"
"PRIMARY-CC := KW-PRIMARY KW-KEY INDEX-PARAMS ;"
"REFERENCES-CC := KW-REFERENCES NAME LPAR NAMES RPAR REF-DIRECTIVES | KW-FOREIGN KW-KEY LPAR NAMES RPAR REFERENCES-CC;"
"REFERENCES-CC := KW-REFERENCES NAME LPAR NAMES RPAR REF-DIRECTIVES | KW-REFERENCES NAME REF-DIRECTIVES | KW-FOREIGN KW-KEY LPAR NAMES RPAR REFERENCES-CC;"
"REF-DIRECTIVES := REF-DIRECTIVE * ;"
"REF-DIRECTIVE := REF-MATCH | REF-ON-UPDATE | REF-ON-DELETE ;"
"REF-MATCH := KW-MATCH MATCH-TYPE ;"
"REF-ON-DELETE := KW-ON KW-DELETE REF-ACTION ;"
"REF-ON-UPDATE := KW-ON KW-UPDATE REF-ACTION ;"
"MATCH-TYPE := KW-FULL | KW-PARTIAL | KW-SIMPLE ;"
"INDEX-PARAMS := EXPRESSION ;"
"INDEX-PARAMS := EXPRESSION | '' ;"
"REF-ACTION := KW-NO KW-ACTION | KW-RESTRICT | KW-CASCADE | KW-SET VALUE;"
"EXISTENCE := '' | KW-IF KW-NOT KW-EXISTS | KW-IF KW-EXISTS ;"
"PERMANENCE := '' | KW-TEMP | KW-TEMPORARY ;"
@ -207,7 +222,8 @@
"REVOKE-STMT := KW-REVOKE PERMISSIONS KW-ON OPT-KW-SCHEMA QUAL-NAME KW-FROM NAMES TERMINATOR;"
"GRANT-STMT := KW-GRANT PERMISSIONS KW-ON OPT-KW-SCHEMA QUAL-NAME KW-TO NAMES TERMINATOR;"
"PERMISSIONS := PERMISSION COMMA * ;"
"PERMISSIONS := PERMISSION-COMMA * PERMISSION ;"
"PERMISSION-COMMA := PERMISSION COMMA ;"
"PERMISSION := KW-ALL | KW-SELECT | KW-INSERT | KW-UPDATE | KW-DELETE ;"
"OPT-KW-SCHEMA := KW-SCHEMA | '' ;"
@ -228,7 +244,7 @@
"LPAR := OPT-SPACE '(' OPT-SPACE ;"
"RPAR := OPT-SPACE ')' OPT-SPACE ; "
"EQUALS := OPT-SPACE '=' OPT-SPACE ;"
"OPT-COMMA := COMMA | '' ;"
"OPT-COMMA := COMMA | OPT-SPACE ;"
;; OPT-SPACE is optional space - it's acceptable as OPT-SPACE if there are no whitespace characters. Comments are
;; also acceptable wherever OPT-SPACE is acceptable
"OPT-SPACE := #'\\s*' | OPT-SPACE COMMENT OPT-SPACE;"
@ -236,7 +252,8 @@
"SPACE := #'\\s+' | OPT-SPACE SPACE | SPACE OPT-SPACE ;"
"QUAL-NAME := NAME | NAME DOT NAME ;"
"NAMES := NAME | NAME COMMA NAMES ;"
"NAME := #'[a-zA-Z][a-zA-Z0-9_]*'"
"NAME := #'[a-zA-Z][a-zA-Z0-9_]*' | QUOTE-MK NAME QUOTE-MK ;"
"QUOTE-MK := '\"' ;"
"TERMINATOR := SEMI-COLON | KW-GO | OPT-SPACE TERMINATOR OPT-SPACE;"
"SEMI-COLON := ';';"))

4
src/squirrel_parse/simplify.clj
View file

@ -39,6 +39,7 @@
:SPACE
:OPT-KW-DATA
:OPT-SPACE
:QUOTE-MK
:TERMINATOR} (first x))))
@ -91,7 +92,6 @@
:ONLY
:OPT-KW-SCHEMA
:PERMISSION
:PERMISSIONS
:PERMISSIONS-STMT
:REF-DIRECTIVE
:RO-BYPASSRLS
@ -105,7 +105,9 @@
:SEQ-SPEC-ELEMENT
:STATEMENT
:TABLE-SPEC-ELEMENT
:TC-ELEMENT
:VALUE) (simplify-second-of-two tree)
(:PERMISSION-COMMA) (in-simplify (nth tree 1))
(:ROLE) (first tree)
(remove nil? (map in-simplify tree)))
tree))