99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* keywords.c
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* lexical token lookup for reserved words in postgres embedded SQL
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*
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*-------------------------------------------------------------------------
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*/
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#include <ctype.h>
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#include "postgres.h"
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#include "extern.h"
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#include "preproc.h"
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/*
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* List of (keyword-name, keyword-token-value) pairs.
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*
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* !!WARNING!!: This list must be sorted, because binary
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* search is used to locate entries.
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*/
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static ScanKeyword ScanKeywords[] = {
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/* name value */
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{"allocate", SQL_ALLOCATE},
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{"at", SQL_AT},
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{"autocommit", SQL_AUTOCOMMIT},
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{"bool", SQL_BOOL},
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{"break", SQL_BREAK},
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{"call", SQL_CALL},
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{"connect", SQL_CONNECT},
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{"connection", SQL_CONNECTION},
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{"continue", SQL_CONTINUE},
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{"count", SQL_COUNT},
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{"data", SQL_DATA},
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{"datetime_interval_code", SQL_DATETIME_INTERVAL_CODE},
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{"datetime_interval_precision", SQL_DATETIME_INTERVAL_PRECISION},
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{"deallocate", SQL_DEALLOCATE},
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{"descriptor", SQL_DESCRIPTOR},
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{"disconnect", SQL_DISCONNECT},
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{"enum", SQL_ENUM},
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{"found", SQL_FOUND},
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{"free", SQL_FREE},
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{"get", SQL_GET},
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{"go", SQL_GO},
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{"goto", SQL_GOTO},
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{"identified", SQL_IDENTIFIED},
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{"indicator", SQL_INDICATOR},
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{"int", SQL_INT},
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{"key_member", SQL_KEY_MEMBER},
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{"length", SQL_LENGTH},
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{"long", SQL_LONG},
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{"name", SQL_NAME},
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{"nullable", SQL_NULLABLE},
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{"octet_length", SQL_OCTET_LENGTH},
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{"off", SQL_OFF},
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{"open", SQL_OPEN},
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{"prepare", SQL_PREPARE},
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{"reference", SQL_REFERENCE},
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{"release", SQL_RELEASE},
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{"returned_length", SQL_RETURNED_LENGTH},
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{"returned_octet_length", SQL_RETURNED_OCTET_LENGTH},
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{"scale", SQL_SCALE},
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{"section", SQL_SECTION},
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{"short", SQL_SHORT},
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{"signed", SQL_SIGNED},
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{"sql", SQL_SQL}, /* strange thing, used for into sql
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* descriptor MYDESC; */
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{"sqlerror", SQL_SQLERROR},
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{"sqlprint", SQL_SQLPRINT},
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{"sqlwarning", SQL_SQLWARNING},
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{"stop", SQL_STOP},
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{"struct", SQL_STRUCT},
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{"unsigned", SQL_UNSIGNED},
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{"value", SQL_VALUE},
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{"var", SQL_VAR},
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{"whenever", SQL_WHENEVER},
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};
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ScanKeyword *
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ScanECPGKeywordLookup(char *text)
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{
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ScanKeyword *low = &ScanKeywords[0];
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ScanKeyword *high = endof(ScanKeywords) - 1;
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ScanKeyword *middle;
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int difference;
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while (low <= high)
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{
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middle = low + (high - low) / 2;
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difference = strcmp(middle->name, text);
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if (difference == 0)
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return middle;
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else if (difference < 0)
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low = middle + 1;
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else
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high = middle - 1;
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}
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return NULL;
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}
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