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sqlhelper.cpp
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208 lines (186 loc) · 6.04 KB
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#include "sqlhelper.h"
#include <stdio.h>
#include <string>
namespace hsql {
void printOperatorExpression(Expr* expr, uintmax_t numIndent);
std::string indent(uintmax_t numIndent) {
return std::string(numIndent, '\t');
}
void inprint(int64_t val, uintmax_t numIndent) {
printf("%s%lld \n", indent(numIndent).c_str(), val);
}
void inprint(float val, uintmax_t numIndent) {
printf("%s%f\n", indent(numIndent).c_str(), val);
}
void inprint(const char* val, uintmax_t numIndent) {
printf("%s%s\n", indent(numIndent).c_str(), val);
}
void inprint(const char* val, const char* val2, uintmax_t numIndent) {
printf("%s%s->%s\n", indent(numIndent).c_str(), val, val2);
}
void inprintC(char val, uintmax_t numIndent) {
printf("%s%c\n", indent(numIndent).c_str(), val);
}
void inprintU(uint64_t val, uintmax_t numIndent) {
printf("%s%llu\n", indent(numIndent).c_str(), val);
}
void printTableRefInfo(TableRef* table, uintmax_t numIndent) {
switch (table->type) {
case kTableName:
inprint(table->name, numIndent);
break;
case kTableSelect:
printSelectStatementInfo(table->select, numIndent);
break;
case kTableJoin:
inprint("Join Table", numIndent);
inprint("Left", numIndent + 1);
printTableRefInfo(table->join->left, numIndent + 2);
inprint("Right", numIndent + 1);
printTableRefInfo(table->join->right, numIndent + 2);
inprint("Join Condition", numIndent + 1);
printExpression(table->join->condition, numIndent + 2);
break;
case kTableCrossProduct:
for (TableRef* tbl : *table->list) printTableRefInfo(tbl, numIndent);
break;
}
if (table->alias != NULL) {
inprint("Alias", numIndent + 1);
inprint(table->alias, numIndent + 2);
}
}
void printOperatorExpression(Expr* expr, uintmax_t numIndent) {
if (expr == NULL) {
inprint("null", numIndent);
return;
}
switch (expr->opType) {
case Expr::SIMPLE_OP:
inprintC(expr->opChar, numIndent);
break;
case Expr::AND:
inprint("AND", numIndent);
break;
case Expr::OR:
inprint("OR", numIndent);
break;
case Expr::NOT:
inprint("NOT", numIndent);
break;
default:
inprintU(expr->opType, numIndent);
break;
}
printExpression(expr->expr, numIndent + 1);
if (expr->expr2 != NULL) printExpression(expr->expr2, numIndent + 1);
}
void printExpression(Expr* expr, uintmax_t numIndent) {
switch (expr->type) {
case kExprStar:
inprint("*", numIndent);
break;
case kExprColumnRef:
inprint(expr->name, numIndent);
break;
// case kExprTableColumnRef: inprint(expr->table, expr->name, numIndent); break;
case kExprLiteralFloat:
inprint(expr->fval, numIndent);
break;
case kExprLiteralInt:
inprint(expr->ival, numIndent);
break;
case kExprLiteralString:
inprint(expr->name, numIndent);
break;
case kExprFunctionRef:
inprint(expr->name, numIndent);
inprint(expr->expr->name, numIndent + 1);
break;
case kExprOperator:
printOperatorExpression(expr, numIndent);
break;
default:
fprintf(stderr, "Unrecognized expression type %d\n", expr->type);
return;
}
if (expr->alias != NULL) {
inprint("Alias", numIndent + 1);
inprint(expr->alias, numIndent + 2);
}
}
void printSelectStatementInfo(const SelectStatement* stmt, uintmax_t numIndent) {
inprint("SelectStatement", numIndent);
inprint("Fields:", numIndent + 1);
for (Expr* expr : *stmt->selectList) printExpression(expr, numIndent + 2);
inprint("Sources:", numIndent + 1);
printTableRefInfo(stmt->fromTable, numIndent + 2);
if (stmt->whereClause != NULL) {
inprint("Search Conditions:", numIndent + 1);
printExpression(stmt->whereClause, numIndent + 2);
}
if (stmt->unionSelect != NULL) {
inprint("Union:", numIndent + 1);
printSelectStatementInfo(stmt->unionSelect, numIndent + 2);
}
if (stmt->order != NULL) {
inprint("OrderBy:", numIndent + 1);
printExpression(stmt->order->at(0)->expr, numIndent + 2);
if (stmt->order->at(0)->type == kOrderAsc) inprint("ascending", numIndent + 2);
else inprint("descending", numIndent + 2);
}
if (stmt->limit != NULL) {
inprint("Limit:", numIndent + 1);
inprint(stmt->limit->limit, numIndent + 2);
}
}
void printImportStatementInfo(const ImportStatement* stmt, uintmax_t numIndent) {
inprint("ImportStatment", numIndent);
inprint(stmt->filePath, numIndent + 1);
inprint(stmt->tableName, numIndent + 1);
}
void printCreateStatementInfo(const CreateStatement* stmt, uintmax_t numIndent) {
inprint("CreateStatment", numIndent);
inprint(stmt->tableName, numIndent + 1);
inprint(stmt->filePath, numIndent + 1);
}
void printInsertStatementInfo(const InsertStatement* stmt, uintmax_t numIndent) {
inprint("InsertStatment", numIndent);
inprint(stmt->tableName, numIndent + 1);
if (stmt->columns != NULL) {
inprint("Columns", numIndent + 1);
for (char* col_name : *stmt->columns) {
inprint(col_name, numIndent + 2);
}
}
switch (stmt->type) {
case InsertStatement::kInsertValues:
inprint("Values", numIndent + 1);
for (Expr* expr : *stmt->values) {
printExpression(expr, numIndent + 2);
}
break;
case InsertStatement::kInsertSelect:
printSelectStatementInfo(stmt->select, numIndent + 1);
break;
}
}
void printStatementInfo(const SQLStatement* stmt) {
switch (stmt->type()) {
case kStmtSelect:
printSelectStatementInfo((const SelectStatement*) stmt, 0);
break;
case kStmtInsert:
printInsertStatementInfo((const InsertStatement*) stmt, 0);
break;
case kStmtCreate:
printCreateStatementInfo((const CreateStatement*) stmt, 0);
break;
case kStmtImport:
printImportStatementInfo((const ImportStatement*) stmt, 0);
break;
default:
break;
}
}
} // namespace hsql