88 lines
1.7 KiB
Go
88 lines
1.7 KiB
Go
package parser
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import (
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"bytes"
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"go.arsenm.dev/amu/ast"
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"go.arsenm.dev/amu/scanner"
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)
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func (p *Parser) parseCode() *ast.Code {
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// Create new code
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code := &ast.Code{}
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tok, lit := p.scan()
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// If token is not WORD or literal is not "=list"
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if tok != scanner.WORD || lit != "=code" {
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// Return nil as this code is invalid
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return nil
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}
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// Scan token
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tok, lit = p.scan()
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// If token is not PUNCT or literal is not "["
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if tok != scanner.PUNCT || lit != "[" {
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// Unscan token
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p.unscan()
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// Return nil as this code is invalid
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return nil
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}
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// Parse argument list
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args := p.parseArgs()
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// If 1 or more arguments provided
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if len(args) >= 1 {
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// Set language to first argument
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code.Language = args[0]
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}
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// If 2 or more arguments provided
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if len(args) >= 2 {
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// Set style to second argument
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code.Style = args[1]
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}
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// Create buffer for text
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textBuf := &bytes.Buffer{}
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for {
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// Scan token
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tok, lit = p.scan()
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// If end of file
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if tok == scanner.EOF {
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// Return whatever waS parsed so far
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return code
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}
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// If token is WORD and lit is "=end"
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if tok == scanner.WORD && lit == "=end" {
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// Scan token
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tok, lit = p.scan()
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// If token is not PUNCT and literal is not "["
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if tok != scanner.PUNCT && lit != "[" {
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// Return nil as this is not a valid code
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return nil
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}
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// Scan token
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tok, lit = p.scan()
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// If token is not PUNCT and literal is not "]"
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if tok != scanner.PUNCT && lit != "]" {
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// Return nil as this is not a valid code
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return nil
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}
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break
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}
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// Write literal to text buffer
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textBuf.WriteString(lit)
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}
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// Set code text to contents of text buffer
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code.Text = textBuf.String()
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return code
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}
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