97 lines
2.3 KiB
Go
97 lines
2.3 KiB
Go
|
package parsers
|
||
|
|
|
||
|
|
import (
|
||
|
|
engine "github.com/tgckpg/mmqlengine/mmql/engine"
|
||
|
|
stmtd "github.com/tgckpg/mmqlengine/mmql/statements"
|
||
|
|
)
|
||
|
|
|
||
|
|
/*
|
||
|
|
EXPECT: BUY
|
||
|
|
THEN EXPECT: [AmountStatement] OF [FinancialInstrumentStatement]
|
||
|
|
THEN EXPECT: FOR [AmountStatement]
|
||
|
|
THEN EXPECT: FROM [ExchangeType]
|
||
|
|
THEN OPT EXPECT: [ExchangeType]
|
||
|
|
THEN OPT EXPECT: [AND|OR]
|
||
|
|
THEN EXPECT: [ActionExpression]
|
||
|
|
THEN OPT EXPECT: FOR EVERY
|
||
|
|
THEN EXPECT: [AmountType] OF [FinancialInstrumentType]
|
||
|
|
THEN EXPECT: [SOLD|BOUGHT] FROM [ExchangeType]
|
||
|
|
*/
|
||
|
|
|
||
|
|
func BuyStatement( lexer *engine.Lexer ) ( istmt stmtd.IStatement, err error ) {
|
||
|
|
orderStmt := stmtd.OrderStatement{}
|
||
|
|
orderStmt.Action = "BUY"
|
||
|
|
|
||
|
|
// AmountStatement
|
||
|
|
readAmount := engine.LexerExpect{
|
||
|
|
Statements: true,
|
||
|
|
Keywords: false,
|
||
|
|
Brackets: false,
|
||
|
|
Quotes: false,
|
||
|
|
Key: "AMOUNT",
|
||
|
|
}
|
||
|
|
|
||
|
|
_amountStmt, err := lexer.ReadStatement( &readAmount )
|
||
|
|
if err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
amountStmt := any( _amountStmt ).( stmtd.AmountStatement )
|
||
|
|
orderStmt.SetAmount( &amountStmt )
|
||
|
|
|
||
|
|
var fiStmt stmtd.FinancialInstrumentStatement
|
||
|
|
|
||
|
|
// OF
|
||
|
|
err = lexer.ReadKeyword( "OF" )
|
||
|
|
if err != nil {
|
||
|
|
// try read FOR
|
||
|
|
err = lexer.ReadKeyword( "FOR" )
|
||
|
|
if err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// BUY 1 QQQ
|
||
|
|
fiStmt := stmtd.FinancialInstrumentStatement{}
|
||
|
|
fiStmt.Name = amountStmt.Unit()
|
||
|
|
|
||
|
|
// Equivalent to BUY 1 UNIT OF QQQ
|
||
|
|
amountStmt.SetUnit( "UNITS" )
|
||
|
|
} else {
|
||
|
|
// BUY 1 UNIT OF QQQ
|
||
|
|
readFI := engine.LexerExpect{
|
||
|
|
Statements: true,
|
||
|
|
Keywords: false,
|
||
|
|
Brackets: false,
|
||
|
|
Quotes: false,
|
||
|
|
Key: "FINANCIAL_INSTRUMENT",
|
||
|
|
}
|
||
|
|
|
||
|
|
_fiStmt, _err := lexer.ReadStatement( &readFI )
|
||
|
|
if _err != nil {
|
||
|
|
err = _err
|
||
|
|
return
|
||
|
|
}
|
||
|
|
fiStmt = any( _fiStmt ).( stmtd.FinancialInstrumentStatement )
|
||
|
|
|
||
|
|
// FOR
|
||
|
|
err = lexer.ReadKeyword( "FOR" )
|
||
|
|
if err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
orderStmt.SetFinancialInstrument( &fiStmt )
|
||
|
|
|
||
|
|
// FOR [AmountStatement]
|
||
|
|
_forStmt, err := lexer.ReadStatement( &readAmount )
|
||
|
|
if err != nil {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
forStmt := any( _forStmt ).( stmtd.AmountStatement )
|
||
|
|
orderStmt.SetFor( &forStmt )
|
||
|
|
|
||
|
|
istmt = orderStmt
|
||
|
|
return
|
||
|
|
}
|