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contractDefinition.go
60 lines (53 loc) · 1.3 KB
/
contractDefinition.go
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package solparser
import (
"github.com/uji/solparser/ast"
"github.com/uji/solparser/token"
)
func (p *Parser) ParseContractDefinition() (*ast.ContractDefinition, error) {
cntr, err := p.lexer.Scan()
if err != nil {
return nil, err
}
var abstractPos *token.Pos
if cntr.Type == token.Abstract {
pos := cntr.Position
abstractPos = &pos
cntr, err = p.lexer.Scan()
if err != nil {
return nil, err
}
}
if cntr.Type != token.Contract {
return nil, token.NewPosError(cntr.Position, "not found contract keyword.")
}
i, err := p.ParseIdentifier()
if err != nil {
return nil, err
}
lbrace, err := p.lexer.Scan()
if err != nil {
return nil, err
}
if lbrace.Type != token.LBrace {
return nil, token.NewPosError(lbrace.Position, "not found left brace.")
}
fn, err := p.ParseFunctionDefinition()
if err != nil {
return nil, err
}
rbrace, err := p.lexer.Scan()
if err != nil {
return nil, err
}
if rbrace.Type != token.RBrace {
return nil, token.NewPosError(rbrace.Position, "not found right brace.")
}
return &ast.ContractDefinition{
Abstract: abstractPos,
Contract: cntr.Position,
Identifier: i,
LBrace: lbrace.Position,
ContractBodyElements: []ast.ContractBodyElement{fn},
RBrace: rbrace.Position,
}, nil
}