表驱动 SLR 实现词法，语法分析

int INT gcd ID ( LSB int INT u ID , COMMA int INT v ID ) RSB { LBB if IF ( LSB v ID != NOTEQUAL 0 NUM ) RSB return RETURN u ID ; SEMICOLON else ELSE { LBB return RETURN get ID ( LSB v ID , COMMA u ID - MINUS u ID / DIV v ID * MUL v ID ) RSB ; SEMICOLON } RBB } RBB int INT gad ID ( LSB int INT t ID ) RSB { LBB if IF ( LSB w ID >= MOREEQUALTHAN 0 NUM ) RSB { LBB return RETURN i ID ; SEMICOLON } RBB } RBB int INT gac ID ( LSB int INT t ID ) RSB { LBB if IF ( LSB w ID >= MOREEQUALTHAN 0 NUM ) RSB { LBB return RETURN i ID ; SEMICOLON } RBB if IF ( LSB i ID > MORETHAN 0 NUM ) RSB { LBB i ID = ASSIGN 0 NUM ; SEMICOLON } RBB } RBB void VOID main ID ( LSB void VOID ) RSB { LBB int INT x ID ; SEMICOLON int INT y ID ; SEMICOLON int INT z ID ; SEMICOLON if IF ( LSB i ID == EQUAL 3 NUM ) RSB { LBB input ID ( LSB ) RSB ; SEMICOLON if IF ( LSB i ID > MORETHAN 1 NUM ) RSB { LBB i ID = ASSIGN i ID + ADD 1 NUM ; SEMICOLON if IF ( LSB i ID < LESSTHAN 8 NUM ) RSB { LBB i ID = ASSIGN 0 NUM ; SEMICOLON } RBB input ID ( LSB ) RSB ; SEMICOLON input ID ( LSB ) RSB ; SEMICOLON } RBB output ID ( LSB gcd ID ( LSB x ID , COMMA y ID ) RSB ) RSB ; SEMICOLON } RBB } RBB void VOID sort ID ( LSB int INT a ID [ LMB ] RMB , COMMA int INT low ID , COMMA int INT high ID ) RSB { LBB int INT i ID ; SEMICOLON int INT k ID ; SEMICOLON while WHILE ( LSB i ID < LESSTHAN high ID - MINUS 1 NUM ) RSB { LBB int INT t ID ; SEMICOLON k ID = ASSIGN minloc ID ( LSB a ID , COMMA i ID , COMMA high ID ) RSB ; SEMICOLON t ID = ASSIGN a ID [ LMB k ID ] RMB ; SEMICOLON a ID [ LMB k ID ] RMB = ASSIGN a ID [ LMB i ID ] RMB ; SEMICOLON a ID [ LMB i ID ] RMB = ASSIGN t ID ; SEMICOLON i ID = ASSIGN i ID + ADD 1 NUM ; SEMICOLON } RBB } RBB