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878fdcb843
Previously, you could do \set variable operand1 operator operand2, but nothing more complicated. Now, you can \set variable expression, which makes it much simpler to do multi-step calculations here. This also adds support for the modulo operator (%), with the same semantics as in C. Robert Haas and Fabien Coelho, reviewed by Álvaro Herrera and Stephen Frost
57 lines
1.0 KiB
C
57 lines
1.0 KiB
C
/*-------------------------------------------------------------------------
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*
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* pgbench.h
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*
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* Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PGBENCH_H
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#define PGBENCH_H
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typedef enum PgBenchExprType
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{
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ENODE_INTEGER_CONSTANT,
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ENODE_VARIABLE,
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ENODE_OPERATOR
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} PgBenchExprType;
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struct PgBenchExpr;
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typedef struct PgBenchExpr PgBenchExpr;
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struct PgBenchExpr
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{
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PgBenchExprType etype;
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union
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{
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struct
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{
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int64 ival;
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} integer_constant;
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struct
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{
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char *varname;
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} variable;
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struct
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{
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char operator;
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PgBenchExpr *lexpr;
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PgBenchExpr *rexpr;
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} operator;
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} u;
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};
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extern PgBenchExpr *expr_parse_result;
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extern int expr_yyparse(void);
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extern int expr_yylex(void);
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extern void expr_yyerror(const char *str);
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extern void expr_scanner_init(const char *str);
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extern void expr_scanner_finish(void);
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extern int64 strtoint64(const char *str);
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#endif
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