37 lines
944 B
Go
37 lines
944 B
Go
package openapi3
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import (
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"fmt"
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"regexp"
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)
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var patRewriteCodepoints = regexp.MustCompile(`(?P<replaced_with_slash_x>\\u)(?P<code>[0-9A-F]{4})`)
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// See https://pkg.go.dev/regexp/syntax
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func intoGoRegexp(re string) string {
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return patRewriteCodepoints.ReplaceAllString(re, `\x{${code}}`)
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}
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// NOTE: racey WRT [writes to schema.Pattern] vs [reads schema.Pattern then writes to compiledPatterns]
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func (schema *Schema) compilePattern(c RegexCompilerFunc) (cp RegexMatcher, err error) {
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pattern := schema.Pattern
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if c != nil {
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cp, err = c(pattern)
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} else {
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cp, err = regexp.Compile(intoGoRegexp(pattern))
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}
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if err != nil {
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schemaErr := &SchemaError{
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Schema: schema,
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SchemaField: "pattern",
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Origin: err,
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Reason: fmt.Sprintf("cannot compile pattern %q: %v", pattern, err),
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}
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err = newSchemaPatternRegexError(pattern, schemaErr, schema.Origin)
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return
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}
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compiledPatterns.Store(pattern, cp)
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return
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}
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