Initial project import

tools/v/vlib/v3/errors/details.v

@@ -0,0 +1,40 @@
+module errors
+
+import os
+import v3.token
+
+pub fn details(file &token.File, pos token.Position, row_padding int) string {
+	if file.name == '' {
+		return 'at ${pos.line}:${pos.column}'
+	}
+	src := os.read_file(file.name) or { return 'at ${pos.line}:${pos.column} in `${file.name}`' }
+	line_start := if pos.line - row_padding - 1 > 0 {
+		file.line_start(pos.line - row_padding)
+	} else {
+		0
+	}
+	mut line_end := pos.offset + 1
+	for i := 0; line_end < src.len; {
+		if src[line_end] == `\n` {
+			i++
+			if i == row_padding + 1 {
+				break
+			}
+		}
+		line_end++
+	}
+	lines_src := src[line_start..line_end].split('\n')
+	line_no_start, _ := file.find_line_and_column(line_start)
+	mut lines_src_formatted := []string{}
+	for i in 0 .. lines_src.len {
+		line_no := line_no_start + i
+		line_src := lines_src[i]
+		line_spaces := line_src.replace('\t', '    ')
+		lines_src_formatted << '${line_no:5d} | ' + line_spaces
+		if line_no == pos.line {
+			space_diff := line_spaces.len - line_src.len
+			lines_src_formatted << '        ' + ' '.repeat(space_diff + pos.column - 1) + '^'
+		}
+	}
+	return lines_src_formatted.join('\n')
+}

tools/v/vlib/v3/errors/error.v

@@ -0,0 +1,27 @@
+module errors
+
+import v3.token
+
+pub enum Reporter {
+	scanner
+	parser
+	checker
+	gen
+}
+
+pub struct CompilerMessage {
+pub:
+	message   string
+	details   string
+	file_path string
+	pos       token.Pos
+	reporter  Reporter
+}
+
+pub struct Error {
+	CompilerMessage
+}
+
+pub struct Warning {
+	CompilerMessage
+}

tools/v/vlib/v3/errors/util.v

@@ -0,0 +1,33 @@
+module errors
+
+import v3.token
+import term
+
+pub enum Kind {
+	warning
+	notice
+	error
+}
+
+pub fn (e Kind) str() string {
+	return match e {
+		.warning { 'warning' }
+		.notice { 'notice' }
+		.error { 'error' }
+	}
+}
+
+pub fn (e Kind) color(s string) string {
+	return match e {
+		.warning { term.yellow(s) }
+		.notice { term.blue(s) }
+		.error { term.red(s) }
+	}
+}
+
+pub fn error(msg string, details string, kind Kind, pos token.Position) {
+	eprintln(pos.str() + ' -> ' + term.bold(kind.color(kind.str())) + ': ' + msg)
+	if details.len > 0 {
+		eprintln(details)
+	}
+}