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switch.v
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switch.v
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// Copyright (c) 2024 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by a GPL license that can be found in the LICENSE file.
fn (mut app App) switch_stmt(switch_stmt SwitchStmt) {
// Switch with no condition (tag) is just a bunch of if-elseif's
if switch_stmt.tag is InvalidExpr {
for i, stmt in switch_stmt.body.list {
if i > 0 {
app.gen('else ')
}
case_clause := stmt as CaseClause
if case_clause.list.len == 0 {
// default:
} else if case_clause.list.len > 0 {
app.gen('if ')
app.expr(case_clause.list[0])
}
app.genln('{')
app.stmt_list(case_clause.body)
app.genln('}')
}
return
}
if switch_stmt.init.lhs.len > 0 {
app.assign_stmt(switch_stmt.init, false)
}
app.gen('match ')
app.expr(switch_stmt.tag)
app.genln('{')
for stmt in switch_stmt.body.list {
case_clause := stmt as CaseClause
for i, x in case_clause.list {
app.expr(x)
if i < case_clause.list.len - 1 {
app.gen(',')
}
}
if case_clause.list.len == 0 {
app.gen('else ')
}
app.genln('{')
app.stmt_list(case_clause.body)
app.genln('}')
}
app.genln('}')
}